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annotate src/cpu/ppc/vm/stubGenerator_ppc.cpp @ 14408:ec28f9c041ff

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8019972: PPC64 (part 9): platform files for interpreter only VM. Summary: With this change the HotSpot core build works on Linux/PPC64. The VM succesfully executes simple test programs. Reviewed-by: kvn
author goetz
date Fri, 02 Aug 2013 16:46:45 +0200
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children 67fa91961822
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14408
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1 /*
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
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3 * Copyright 2012, 2013 SAP AG. All rights reserved.
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 *
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6 * This code is free software; you can redistribute it and/or modify it
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7 * under the terms of the GNU General Public License version 2 only, as
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8 * published by the Free Software Foundation.
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9 *
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10 * This code is distributed in the hope that it will be useful, but WITHOUT
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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13 * version 2 for more details (a copy is included in the LICENSE file that
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14 * accompanied this code).
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15 *
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16 * You should have received a copy of the GNU General Public License version
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17 * 2 along with this work; if not, write to the Free Software Foundation,
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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19 *
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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21 * or visit www.oracle.com if you need additional information or have any
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22 * questions.
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23 *
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24 */
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25
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26 #include "precompiled.hpp"
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27 #include "asm/assembler.hpp"
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28 #include "asm/macroAssembler.inline.hpp"
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29 #include "interpreter/interpreter.hpp"
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30 #include "nativeInst_ppc.hpp"
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31 #include "oops/instanceOop.hpp"
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32 #include "oops/method.hpp"
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33 #include "oops/objArrayKlass.hpp"
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34 #include "oops/oop.inline.hpp"
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35 #include "prims/methodHandles.hpp"
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36 #include "runtime/frame.inline.hpp"
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37 #include "runtime/handles.inline.hpp"
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38 #include "runtime/sharedRuntime.hpp"
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39 #include "runtime/stubCodeGenerator.hpp"
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40 #include "runtime/stubRoutines.hpp"
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41 #include "utilities/top.hpp"
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42 #ifdef TARGET_OS_FAMILY_aix
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43 # include "thread_aix.inline.hpp"
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44 #endif
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45 #ifdef TARGET_OS_FAMILY_linux
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46 # include "thread_linux.inline.hpp"
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47 #endif
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48 #ifdef COMPILER2
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49 #include "opto/runtime.hpp"
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50 #endif
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51
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52 #define __ _masm->
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53
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54 #ifdef PRODUCT
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55 #define BLOCK_COMMENT(str) // nothing
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56 #else
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57 #define BLOCK_COMMENT(str) __ block_comment(str)
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58 #endif
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59
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60 class StubGenerator: public StubCodeGenerator {
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61 private:
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62
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63 // Call stubs are used to call Java from C
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64 //
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65 // Arguments:
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66 //
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67 // R3 - call wrapper address : address
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68 // R4 - result : intptr_t*
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69 // R5 - result type : BasicType
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70 // R6 - method : Method
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71 // R7 - frame mgr entry point : address
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72 // R8 - parameter block : intptr_t*
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73 // R9 - parameter count in words : int
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74 // R10 - thread : Thread*
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75 //
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76 address generate_call_stub(address& return_address) {
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77 // Setup a new c frame, copy java arguments, call frame manager or
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78 // native_entry, and process result.
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79
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80 StubCodeMark mark(this, "StubRoutines", "call_stub");
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81
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82 address start = __ emit_fd();
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83
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84 // some sanity checks
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85 assert((sizeof(frame::abi_48) % 16) == 0, "unaligned");
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86 assert((sizeof(frame::abi_112) % 16) == 0, "unaligned");
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87 assert((sizeof(frame::spill_nonvolatiles) % 16) == 0, "unaligned");
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88 assert((sizeof(frame::parent_ijava_frame_abi) % 16) == 0, "unaligned");
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89 assert((sizeof(frame::entry_frame_locals) % 16) == 0, "unaligned");
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90
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91 Register r_arg_call_wrapper_addr = R3;
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92 Register r_arg_result_addr = R4;
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93 Register r_arg_result_type = R5;
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94 Register r_arg_method = R6;
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95 Register r_arg_entry = R7;
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96 Register r_arg_thread = R10;
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97
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98 Register r_temp = R24;
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99 Register r_top_of_arguments_addr = R25;
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100 Register r_entryframe_fp = R26;
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101
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102 {
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103 // Stack on entry to call_stub:
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104 //
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105 // F1 [C_FRAME]
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106 // ...
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107
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108 Register r_arg_argument_addr = R8;
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109 Register r_arg_argument_count = R9;
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110 Register r_frame_alignment_in_bytes = R27;
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111 Register r_argument_addr = R28;
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112 Register r_argumentcopy_addr = R29;
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113 Register r_argument_size_in_bytes = R30;
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114 Register r_frame_size = R23;
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115
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116 Label arguments_copied;
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117
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118 // Save LR/CR to caller's C_FRAME.
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119 __ save_LR_CR(R0);
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120
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121 // Zero extend arg_argument_count.
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122 __ clrldi(r_arg_argument_count, r_arg_argument_count, 32);
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123
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124 // Save non-volatiles GPRs to ENTRY_FRAME (not yet pushed, but it's safe).
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125 __ save_nonvolatile_gprs(R1_SP, _spill_nonvolatiles_neg(r14));
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126
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127 // Keep copy of our frame pointer (caller's SP).
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128 __ mr(r_entryframe_fp, R1_SP);
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129
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130 BLOCK_COMMENT("Push ENTRY_FRAME including arguments");
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131 // Push ENTRY_FRAME including arguments:
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132 //
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133 // F0 [TOP_IJAVA_FRAME_ABI]
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134 // alignment (optional)
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135 // [outgoing Java arguments]
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136 // [ENTRY_FRAME_LOCALS]
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137 // F1 [C_FRAME]
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138 // ...
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139
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140 // calculate frame size
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141
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142 // unaligned size of arguments
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143 __ sldi(r_argument_size_in_bytes,
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144 r_arg_argument_count, Interpreter::logStackElementSize);
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145 // arguments alignment (max 1 slot)
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146 // FIXME: use round_to() here
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147 __ andi_(r_frame_alignment_in_bytes, r_arg_argument_count, 1);
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148 __ sldi(r_frame_alignment_in_bytes,
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149 r_frame_alignment_in_bytes, Interpreter::logStackElementSize);
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150
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151 // size = unaligned size of arguments + top abi's size
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152 __ addi(r_frame_size, r_argument_size_in_bytes,
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153 frame::top_ijava_frame_abi_size);
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154 // size += arguments alignment
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155 __ add(r_frame_size,
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156 r_frame_size, r_frame_alignment_in_bytes);
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157 // size += size of call_stub locals
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158 __ addi(r_frame_size,
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159 r_frame_size, frame::entry_frame_locals_size);
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160
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161 // push ENTRY_FRAME
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162 __ push_frame(r_frame_size, r_temp);
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163
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164 // initialize call_stub locals (step 1)
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165 __ std(r_arg_call_wrapper_addr,
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166 _entry_frame_locals_neg(call_wrapper_address), r_entryframe_fp);
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167 __ std(r_arg_result_addr,
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168 _entry_frame_locals_neg(result_address), r_entryframe_fp);
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169 __ std(r_arg_result_type,
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170 _entry_frame_locals_neg(result_type), r_entryframe_fp);
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171 // we will save arguments_tos_address later
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172
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173
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174 BLOCK_COMMENT("Copy Java arguments");
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175 // copy Java arguments
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176
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177 // Calculate top_of_arguments_addr which will be R17_tos (not prepushed) later.
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178 // FIXME: why not simply use SP+frame::top_ijava_frame_size?
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179 __ addi(r_top_of_arguments_addr,
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180 R1_SP, frame::top_ijava_frame_abi_size);
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181 __ add(r_top_of_arguments_addr,
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182 r_top_of_arguments_addr, r_frame_alignment_in_bytes);
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183
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184 // any arguments to copy?
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185 __ cmpdi(CCR0, r_arg_argument_count, 0);
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186 __ beq(CCR0, arguments_copied);
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187
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188 // prepare loop and copy arguments in reverse order
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189 {
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190 // init CTR with arg_argument_count
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191 __ mtctr(r_arg_argument_count);
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192
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193 // let r_argumentcopy_addr point to last outgoing Java arguments P
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194 __ mr(r_argumentcopy_addr, r_top_of_arguments_addr);
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195
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196 // let r_argument_addr point to last incoming java argument
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197 __ add(r_argument_addr,
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198 r_arg_argument_addr, r_argument_size_in_bytes);
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199 __ addi(r_argument_addr, r_argument_addr, -BytesPerWord);
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200
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201 // now loop while CTR > 0 and copy arguments
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202 {
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203 Label next_argument;
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204 __ bind(next_argument);
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205
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206 __ ld(r_temp, 0, r_argument_addr);
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207 // argument_addr--;
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208 __ addi(r_argument_addr, r_argument_addr, -BytesPerWord);
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209 __ std(r_temp, 0, r_argumentcopy_addr);
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210 // argumentcopy_addr++;
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211 __ addi(r_argumentcopy_addr, r_argumentcopy_addr, BytesPerWord);
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212
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213 __ bdnz(next_argument);
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214 }
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215 }
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216
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217 // Arguments copied, continue.
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218 __ bind(arguments_copied);
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219 }
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220
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221 {
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222 BLOCK_COMMENT("Call frame manager or native entry.");
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223 // Call frame manager or native entry.
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224 Register r_new_arg_entry = R14_state;
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225 assert_different_registers(r_new_arg_entry, r_top_of_arguments_addr,
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226 r_arg_method, r_arg_thread);
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227
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228 __ mr(r_new_arg_entry, r_arg_entry);
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229
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230 // Register state on entry to frame manager / native entry:
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231 //
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232 // R17_tos - intptr_t* sender tos (prepushed) Lesp = (SP) + copied_arguments_offset - 8
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233 // R19_method - Method
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234 // R16_thread - JavaThread*
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235
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236 // R17_tos must point to last argument - element_size.
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237 __ addi(R17_tos, r_top_of_arguments_addr, -Interpreter::stackElementSize);
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238
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239 // initialize call_stub locals (step 2)
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240 // now save R17_tos as arguments_tos_address
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241 __ std(R17_tos, _entry_frame_locals_neg(arguments_tos_address), r_entryframe_fp);
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242
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243 // load argument registers for call
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244 __ mr(R19_method, r_arg_method);
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245 __ mr(R16_thread, r_arg_thread);
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246 assert(R17_tos != r_arg_method, "trashed r_arg_method");
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247 assert(R17_tos != r_arg_thread && R19_method != r_arg_thread, "trashed r_arg_thread");
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248
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249 // Set R15_prev_state to 0 for simplifying checks in callee.
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250 __ li(R15_prev_state, 0);
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251
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252 // Stack on entry to frame manager / native entry:
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253 //
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254 // F0 [TOP_IJAVA_FRAME_ABI]
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255 // alignment (optional)
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256 // [outgoing Java arguments]
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257 // [ENTRY_FRAME_LOCALS]
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258 // F1 [C_FRAME]
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259 // ...
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260 //
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261
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262 // global toc register
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263 __ load_const(R29, MacroAssembler::global_toc(), R11_scratch1);
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264
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265 // Load narrow oop base.
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266 __ reinit_heapbase(R30, R11_scratch1);
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267
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268 // Remember the senderSP so we interpreter can pop c2i arguments off of the stack
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269 // when called via a c2i.
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270
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271 // Pass initial_caller_sp to framemanager.
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272 __ mr(R21_tmp1, R1_SP);
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273
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274 // Do a light-weight C-call here, r_new_arg_entry holds the address
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275 // of the interpreter entry point (frame manager or native entry)
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276 // and save runtime-value of LR in return_address.
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277 assert(r_new_arg_entry != R17_tos && r_new_arg_entry != R19_method && r_new_arg_entry != R16_thread,
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278 "trashed r_new_arg_entry");
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279 return_address = __ call_stub(r_new_arg_entry);
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280 }
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281
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282 {
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283 BLOCK_COMMENT("Returned from frame manager or native entry.");
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284 // Returned from frame manager or native entry.
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285 // Now pop frame, process result, and return to caller.
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286
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287 // Stack on exit from frame manager / native entry:
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288 //
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289 // F0 [ABI]
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290 // ...
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291 // [ENTRY_FRAME_LOCALS]
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292 // F1 [C_FRAME]
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293 // ...
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294 //
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295 // Just pop the topmost frame ...
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296 //
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297
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298 Label ret_is_object;
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299 Label ret_is_long;
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300 Label ret_is_float;
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301 Label ret_is_double;
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302
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303 Register r_entryframe_fp = R30;
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304 Register r_lr = R7_ARG5;
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305 Register r_cr = R8_ARG6;
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306
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307 // Reload some volatile registers which we've spilled before the call
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308 // to frame manager / native entry.
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309 // Access all locals via frame pointer, because we know nothing about
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parents:
diff changeset
310 // the topmost frame's size.
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311 __ ld(r_entryframe_fp, _abi(callers_sp), R1_SP);
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312 assert_different_registers(r_entryframe_fp, R3_RET, r_arg_result_addr, r_arg_result_type, r_cr, r_lr);
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313 __ ld(r_arg_result_addr,
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parents:
diff changeset
314 _entry_frame_locals_neg(result_address), r_entryframe_fp);
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parents:
diff changeset
315 __ ld(r_arg_result_type,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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316 _entry_frame_locals_neg(result_type), r_entryframe_fp);
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parents:
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317 __ ld(r_cr, _abi(cr), r_entryframe_fp);
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318 __ ld(r_lr, _abi(lr), r_entryframe_fp);
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diff changeset
319
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parents:
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320 // pop frame and restore non-volatiles, LR and CR
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321 __ mr(R1_SP, r_entryframe_fp);
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parents:
diff changeset
322 __ mtcr(r_cr);
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parents:
diff changeset
323 __ mtlr(r_lr);
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parents:
diff changeset
324
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parents:
diff changeset
325 // Store result depending on type. Everything that is not
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
326 // T_OBJECT, T_LONG, T_FLOAT, or T_DOUBLE is treated as T_INT.
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327 __ cmpwi(CCR0, r_arg_result_type, T_OBJECT);
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parents:
diff changeset
328 __ cmpwi(CCR1, r_arg_result_type, T_LONG);
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parents:
diff changeset
329 __ cmpwi(CCR5, r_arg_result_type, T_FLOAT);
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330 __ cmpwi(CCR6, r_arg_result_type, T_DOUBLE);
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331
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parents:
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332 // restore non-volatile registers
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333 __ restore_nonvolatile_gprs(R1_SP, _spill_nonvolatiles_neg(r14));
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334
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parents:
diff changeset
335
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parents:
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336 // Stack on exit from call_stub:
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parents:
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337 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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338 // 0 [C_FRAME]
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parents:
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339 // ...
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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340 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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341 // no call_stub frames left.
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parents:
diff changeset
342
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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343 // All non-volatiles have been restored at this point!!
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344 assert(R3_RET == R3, "R3_RET should be R3");
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parents:
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345
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parents:
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346 __ beq(CCR0, ret_is_object);
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parents:
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347 __ beq(CCR1, ret_is_long);
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parents:
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348 __ beq(CCR5, ret_is_float);
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parents:
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349 __ beq(CCR6, ret_is_double);
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350
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parents:
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351 // default:
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parents:
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352 __ stw(R3_RET, 0, r_arg_result_addr);
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353 __ blr(); // return to caller
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parents:
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354
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parents:
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355 // case T_OBJECT:
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parents:
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356 __ bind(ret_is_object);
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parents:
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357 __ std(R3_RET, 0, r_arg_result_addr);
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parents:
diff changeset
358 __ blr(); // return to caller
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
359
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
360 // case T_LONG:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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361 __ bind(ret_is_long);
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parents:
diff changeset
362 __ std(R3_RET, 0, r_arg_result_addr);
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parents:
diff changeset
363 __ blr(); // return to caller
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
364
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
365 // case T_FLOAT:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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366 __ bind(ret_is_float);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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367 __ stfs(F1_RET, 0, r_arg_result_addr);
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parents:
diff changeset
368 __ blr(); // return to caller
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
369
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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370 // case T_DOUBLE:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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371 __ bind(ret_is_double);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
372 __ stfd(F1_RET, 0, r_arg_result_addr);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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373 __ blr(); // return to caller
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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374 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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375
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
376 return start;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
377 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
378
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
379 // Return point for a Java call if there's an exception thrown in
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
380 // Java code. The exception is caught and transformed into a
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
381 // pending exception stored in JavaThread that can be tested from
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
382 // within the VM.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
383 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
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384 address generate_catch_exception() {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
385 StubCodeMark mark(this, "StubRoutines", "catch_exception");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
386
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
387 address start = __ pc();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
388
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
389 // Registers alive
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
390 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
391 // R16_thread
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
392 // R3_ARG1 - address of pending exception
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
393 // R4_ARG2 - return address in call stub
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parents:
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394
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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395 const Register exception_file = R21_tmp1;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
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396 const Register exception_line = R22_tmp2;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
397
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
398 __ load_const(exception_file, (void*)__FILE__);
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goetz
parents:
diff changeset
399 __ load_const(exception_line, (void*)__LINE__);
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parents:
diff changeset
400
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
401 __ std(R3_ARG1, thread_(pending_exception));
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
402 // store into `char *'
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
403 __ std(exception_file, thread_(exception_file));
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
404 // store into `int'
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
405 __ stw(exception_line, thread_(exception_line));
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
406
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
407 // complete return to VM
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
408 assert(StubRoutines::_call_stub_return_address != NULL, "must have been generated before");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
409
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
410 __ mtlr(R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
411 // continue in call stub
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
412 __ blr();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
413
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
414 return start;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
415 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
416
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
417 // Continuation point for runtime calls returning with a pending
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
418 // exception. The pending exception check happened in the runtime
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
419 // or native call stub. The pending exception in Thread is
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
420 // converted into a Java-level exception.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
421 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
422 address generate_forward_exception() {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
423 StubCodeMark mark(this, "StubRoutines", "forward_exception");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
424 address start = __ pc();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
425
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
426 #if !defined(PRODUCT)
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
427 if (VerifyOops) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
428 // Get pending exception oop.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
429 __ ld(R3_ARG1,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
430 in_bytes(Thread::pending_exception_offset()),
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
431 R16_thread);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
432 // Make sure that this code is only executed if there is a pending exception.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
433 {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
434 Label L;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
435 __ cmpdi(CCR0, R3_ARG1, 0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
436 __ bne(CCR0, L);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
437 __ stop("StubRoutines::forward exception: no pending exception (1)");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
438 __ bind(L);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
439 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
440 __ verify_oop(R3_ARG1, "StubRoutines::forward exception: not an oop");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
441 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
442 #endif
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
443
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
444 // Save LR/CR and copy exception pc (LR) into R4_ARG2.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
445 __ save_LR_CR(R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
446 __ push_frame_abi112(0, R0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
447 // Find exception handler.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
448 __ call_VM_leaf(CAST_FROM_FN_PTR(address,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
449 SharedRuntime::exception_handler_for_return_address),
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
450 R16_thread,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
451 R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
452 // Copy handler's address.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
453 __ mtctr(R3_RET);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
454 __ pop_frame();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
455 __ restore_LR_CR(R0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
456
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
457 // Set up the arguments for the exception handler:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
458 // - R3_ARG1: exception oop
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
459 // - R4_ARG2: exception pc.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
460
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
461 // Load pending exception oop.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
462 __ ld(R3_ARG1,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
463 in_bytes(Thread::pending_exception_offset()),
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
464 R16_thread);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
465
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
466 // The exception pc is the return address in the caller.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
467 // Must load it into R4_ARG2.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
468 __ mflr(R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
469
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
470 #ifdef ASSERT
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
471 // Make sure exception is set.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
472 {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
473 Label L;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
474 __ cmpdi(CCR0, R3_ARG1, 0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
475 __ bne(CCR0, L);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
476 __ stop("StubRoutines::forward exception: no pending exception (2)");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
477 __ bind(L);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
478 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
479 #endif
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
480
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
481 // Clear the pending exception.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
482 __ li(R0, 0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
483 __ std(R0,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
484 in_bytes(Thread::pending_exception_offset()),
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
485 R16_thread);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
486 // Jump to exception handler.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
487 __ bctr();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
488
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
489 return start;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
490 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
491
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
492 #undef __
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
493 #define __ masm->
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
494 // Continuation point for throwing of implicit exceptions that are
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
495 // not handled in the current activation. Fabricates an exception
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
496 // oop and initiates normal exception dispatching in this
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
497 // frame. Only callee-saved registers are preserved (through the
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
498 // normal register window / RegisterMap handling). If the compiler
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
499 // needs all registers to be preserved between the fault point and
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
500 // the exception handler then it must assume responsibility for that
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
501 // in AbstractCompiler::continuation_for_implicit_null_exception or
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
502 // continuation_for_implicit_division_by_zero_exception. All other
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
503 // implicit exceptions (e.g., NullPointerException or
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
504 // AbstractMethodError on entry) are either at call sites or
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
505 // otherwise assume that stack unwinding will be initiated, so
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
506 // caller saved registers were assumed volatile in the compiler.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
507 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
508 // Note that we generate only this stub into a RuntimeStub, because
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
509 // it needs to be properly traversed and ignored during GC, so we
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
510 // change the meaning of the "__" macro within this method.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
511 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
512 // Note: the routine set_pc_not_at_call_for_caller in
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
513 // SharedRuntime.cpp requires that this code be generated into a
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
514 // RuntimeStub.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
515 address generate_throw_exception(const char* name, address runtime_entry, bool restore_saved_exception_pc,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
516 Register arg1 = noreg, Register arg2 = noreg) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
517 CodeBuffer code(name, 1024 DEBUG_ONLY(+ 512), 0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
518 MacroAssembler* masm = new MacroAssembler(&code);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
519
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
520 OopMapSet* oop_maps = new OopMapSet();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
521 int frame_size_in_bytes = frame::abi_112_size;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
522 OopMap* map = new OopMap(frame_size_in_bytes / sizeof(jint), 0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
523
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
524 StubCodeMark mark(this, "StubRoutines", "throw_exception");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
525
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
526 address start = __ pc();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
527
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
528 __ save_LR_CR(R11_scratch1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
529
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
530 // Push a frame.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
531 __ push_frame_abi112(0, R11_scratch1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
532
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
533 address frame_complete_pc = __ pc();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
534
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
535 if (restore_saved_exception_pc) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
536 __ unimplemented("StubGenerator::throw_exception with restore_saved_exception_pc", 74);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
537 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
538
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
539 // Note that we always have a runtime stub frame on the top of
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
540 // stack by this point. Remember the offset of the instruction
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
541 // whose address will be moved to R11_scratch1.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
542 address gc_map_pc = __ get_PC_trash_LR(R11_scratch1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
543
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
544 __ set_last_Java_frame(/*sp*/R1_SP, /*pc*/R11_scratch1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
545
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
546 __ mr(R3_ARG1, R16_thread);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
547 if (arg1 != noreg) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
548 __ mr(R4_ARG2, arg1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
549 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
550 if (arg2 != noreg) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
551 __ mr(R5_ARG3, arg2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
552 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
553 __ call_c(CAST_FROM_FN_PTR(FunctionDescriptor*, runtime_entry),
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
554 relocInfo::none);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
555
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
556 // Set an oopmap for the call site.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
557 oop_maps->add_gc_map((int)(gc_map_pc - start), map);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
558
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
559 __ reset_last_Java_frame();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
560
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
561 #ifdef ASSERT
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
562 // Make sure that this code is only executed if there is a pending
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
563 // exception.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
564 {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
565 Label L;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
566 __ ld(R0,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
567 in_bytes(Thread::pending_exception_offset()),
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
568 R16_thread);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
569 __ cmpdi(CCR0, R0, 0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
570 __ bne(CCR0, L);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
571 __ stop("StubRoutines::throw_exception: no pending exception");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
572 __ bind(L);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
573 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
574 #endif
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
575
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
576 // Pop frame.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
577 __ pop_frame();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
578
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
579 __ restore_LR_CR(R11_scratch1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
580
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
581 __ load_const(R11_scratch1, StubRoutines::forward_exception_entry());
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
582 __ mtctr(R11_scratch1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
583 __ bctr();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
584
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
585 // Create runtime stub with OopMap.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
586 RuntimeStub* stub =
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
587 RuntimeStub::new_runtime_stub(name, &code,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
588 /*frame_complete=*/ (int)(frame_complete_pc - start),
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
589 frame_size_in_bytes/wordSize,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
590 oop_maps,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
591 false);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
592 return stub->entry_point();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
593 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
594 #undef __
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
595 #define __ _masm->
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
596
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
597 // Generate G1 pre-write barrier for array.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
598 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
599 // Input:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
600 // from - register containing src address (only needed for spilling)
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
601 // to - register containing starting address
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
602 // count - register containing element count
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
603 // tmp - scratch register
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
604 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
605 // Kills:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
606 // nothing
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
607 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
608 void gen_write_ref_array_pre_barrier(Register from, Register to, Register count, bool dest_uninitialized, Register Rtmp1) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
609 BarrierSet* const bs = Universe::heap()->barrier_set();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
610 switch (bs->kind()) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
611 case BarrierSet::G1SATBCT:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
612 case BarrierSet::G1SATBCTLogging:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
613 // With G1, don't generate the call if we statically know that the target in uninitialized
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
614 if (!dest_uninitialized) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
615 const int spill_slots = 4 * wordSize;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
616 const int frame_size = frame::abi_112_size + spill_slots;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
617
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
618 __ save_LR_CR(R0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
619 __ push_frame_abi112(spill_slots, R0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
620 __ std(from, frame_size - 1 * wordSize, R1_SP);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
621 __ std(to, frame_size - 2 * wordSize, R1_SP);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
622 __ std(count, frame_size - 3 * wordSize, R1_SP);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
623
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
624 __ call_VM_leaf(CAST_FROM_FN_PTR(address, BarrierSet::static_write_ref_array_pre), to, count);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
625
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
626 __ ld(from, frame_size - 1 * wordSize, R1_SP);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
627 __ ld(to, frame_size - 2 * wordSize, R1_SP);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
628 __ ld(count, frame_size - 3 * wordSize, R1_SP);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
629 __ pop_frame();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
630 __ restore_LR_CR(R0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
631 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
632 break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
633 case BarrierSet::CardTableModRef:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
634 case BarrierSet::CardTableExtension:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
635 case BarrierSet::ModRef:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
636 break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
637 default:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
638 ShouldNotReachHere();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
639 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
640 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
641
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
642 // Generate CMS/G1 post-write barrier for array.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
643 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
644 // Input:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
645 // addr - register containing starting address
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
646 // count - register containing element count
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
647 // tmp - scratch register
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
648 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
649 // The input registers and R0 are overwritten.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
650 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
651 void gen_write_ref_array_post_barrier(Register addr, Register count, Register tmp) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
652 BarrierSet* const bs = Universe::heap()->barrier_set();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
653
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
654 switch (bs->kind()) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
655 case BarrierSet::G1SATBCT:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
656 case BarrierSet::G1SATBCTLogging:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
657 {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
658 __ save_LR_CR(R0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
659 // We need this frame only that the callee can spill LR/CR.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
660 __ push_frame_abi112(0, R0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
661
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
662 __ call_VM_leaf(CAST_FROM_FN_PTR(address, BarrierSet::static_write_ref_array_post), addr, count);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
663
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
664 __ pop_frame();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
665 __ restore_LR_CR(R0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
666 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
667 break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
668 case BarrierSet::CardTableModRef:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
669 case BarrierSet::CardTableExtension:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
670 {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
671 Label Lskip_loop, Lstore_loop;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
672 if (UseConcMarkSweepGC) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
673 // TODO PPC port: contribute optimization / requires shared changes
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
674 __ release();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
675 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
676
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
677 CardTableModRefBS* const ct = (CardTableModRefBS*)bs;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
678 assert(sizeof(*ct->byte_map_base) == sizeof(jbyte), "adjust this code");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
679 assert_different_registers(addr, count, tmp);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
680
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
681 __ sldi(count, count, LogBytesPerHeapOop);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
682 __ addi(count, count, -BytesPerHeapOop);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
683 __ add(count, addr, count);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
684 // Use two shifts to clear out those low order two bits! (Cannot opt. into 1.)
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
685 __ srdi(addr, addr, CardTableModRefBS::card_shift);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
686 __ srdi(count, count, CardTableModRefBS::card_shift);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
687 __ subf(count, addr, count);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
688 assert_different_registers(R0, addr, count, tmp);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
689 __ load_const(tmp, (address)ct->byte_map_base);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
690 __ addic_(count, count, 1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
691 __ beq(CCR0, Lskip_loop);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
692 __ li(R0, 0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
693 __ mtctr(count);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
694 // Byte store loop
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
695 __ bind(Lstore_loop);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
696 __ stbx(R0, tmp, addr);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
697 __ addi(addr, addr, 1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
698 __ bdnz(Lstore_loop);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
699 __ bind(Lskip_loop);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
700 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
701 break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
702 case BarrierSet::ModRef:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
703 break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
704 default:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
705 ShouldNotReachHere();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
706 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
707 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
708
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
709 // Support for void zero_words_aligned8(HeapWord* to, size_t count)
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
710 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
711 // Arguments:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
712 // to:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
713 // count:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
714 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
715 // Destroys:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
716 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
717 address generate_zero_words_aligned8() {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
718 StubCodeMark mark(this, "StubRoutines", "zero_words_aligned8");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
719
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
720 // Implemented as in ClearArray.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
721 address start = __ emit_fd();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
722
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
723 Register base_ptr_reg = R3_ARG1; // tohw (needs to be 8b aligned)
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
724 Register cnt_dwords_reg = R4_ARG2; // count (in dwords)
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
725 Register tmp1_reg = R5_ARG3;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
726 Register tmp2_reg = R6_ARG4;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
727 Register zero_reg = R7_ARG5;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
728
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
729 // Procedure for large arrays (uses data cache block zero instruction).
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
730 Label dwloop, fast, fastloop, restloop, lastdword, done;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
731 int cl_size=VM_Version::get_cache_line_size(), cl_dwords=cl_size>>3, cl_dwordaddr_bits=exact_log2(cl_dwords);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
732 int min_dcbz=2; // Needs to be positive, apply dcbz only to at least min_dcbz cache lines.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
733
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
734 // Clear up to 128byte boundary if long enough, dword_cnt=(16-(base>>3))%16.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
735 __ dcbtst(base_ptr_reg); // Indicate write access to first cache line ...
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
736 __ andi(tmp2_reg, cnt_dwords_reg, 1); // to check if number of dwords is even.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
737 __ srdi_(tmp1_reg, cnt_dwords_reg, 1); // number of double dwords
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
738 __ load_const_optimized(zero_reg, 0L); // Use as zero register.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
739
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
740 __ cmpdi(CCR1, tmp2_reg, 0); // cnt_dwords even?
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
741 __ beq(CCR0, lastdword); // size <= 1
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
742 __ mtctr(tmp1_reg); // Speculatively preload counter for rest loop (>0).
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
743 __ cmpdi(CCR0, cnt_dwords_reg, (min_dcbz+1)*cl_dwords-1); // Big enough to ensure >=min_dcbz cache lines are included?
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
744 __ neg(tmp1_reg, base_ptr_reg); // bit 0..58: bogus, bit 57..60: (16-(base>>3))%16, bit 61..63: 000
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
745
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
746 __ blt(CCR0, restloop); // Too small. (<31=(2*cl_dwords)-1 is sufficient, but bigger performs better.)
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
747 __ rldicl_(tmp1_reg, tmp1_reg, 64-3, 64-cl_dwordaddr_bits); // Extract number of dwords to 128byte boundary=(16-(base>>3))%16.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
748
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
749 __ beq(CCR0, fast); // already 128byte aligned
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
750 __ mtctr(tmp1_reg); // Set ctr to hit 128byte boundary (0<ctr<cnt).
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
751 __ subf(cnt_dwords_reg, tmp1_reg, cnt_dwords_reg); // rest (>0 since size>=256-8)
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
752
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
753 // Clear in first cache line dword-by-dword if not already 128byte aligned.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
754 __ bind(dwloop);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
755 __ std(zero_reg, 0, base_ptr_reg); // Clear 8byte aligned block.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
756 __ addi(base_ptr_reg, base_ptr_reg, 8);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
757 __ bdnz(dwloop);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
758
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
759 // clear 128byte blocks
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
760 __ bind(fast);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
761 __ srdi(tmp1_reg, cnt_dwords_reg, cl_dwordaddr_bits); // loop count for 128byte loop (>0 since size>=256-8)
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
762 __ andi(tmp2_reg, cnt_dwords_reg, 1); // to check if rest even
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
763
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
764 __ mtctr(tmp1_reg); // load counter
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
765 __ cmpdi(CCR1, tmp2_reg, 0); // rest even?
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
766 __ rldicl_(tmp1_reg, cnt_dwords_reg, 63, 65-cl_dwordaddr_bits); // rest in double dwords
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
767
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
768 __ bind(fastloop);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
769 __ dcbz(base_ptr_reg); // Clear 128byte aligned block.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
770 __ addi(base_ptr_reg, base_ptr_reg, cl_size);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
771 __ bdnz(fastloop);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
772
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
773 //__ dcbtst(base_ptr_reg); // Indicate write access to last cache line.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
774 __ beq(CCR0, lastdword); // rest<=1
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
775 __ mtctr(tmp1_reg); // load counter
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
776
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
777 // Clear rest.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
778 __ bind(restloop);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
779 __ std(zero_reg, 0, base_ptr_reg); // Clear 8byte aligned block.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
780 __ std(zero_reg, 8, base_ptr_reg); // Clear 8byte aligned block.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
781 __ addi(base_ptr_reg, base_ptr_reg, 16);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
782 __ bdnz(restloop);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
783
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
784 __ bind(lastdword);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
785 __ beq(CCR1, done);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
786 __ std(zero_reg, 0, base_ptr_reg);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
787 __ bind(done);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
788 __ blr(); // return
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
789
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
790 return start;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
791 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
792
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
793 // The following routine generates a subroutine to throw an asynchronous
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
794 // UnknownError when an unsafe access gets a fault that could not be
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
795 // reasonably prevented by the programmer. (Example: SIGBUS/OBJERR.)
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
796 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
797 address generate_handler_for_unsafe_access() {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
798 StubCodeMark mark(this, "StubRoutines", "handler_for_unsafe_access");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
799 address start = __ emit_fd();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
800 __ unimplemented("StubRoutines::handler_for_unsafe_access", 93);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
801 return start;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
802 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
803
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
804 #if !defined(PRODUCT)
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
805 // Wrapper which calls oopDesc::is_oop_or_null()
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
806 // Only called by MacroAssembler::verify_oop
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
807 static void verify_oop_helper(const char* message, oop o) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
808 if (!o->is_oop_or_null()) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
809 fatal(message);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
810 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
811 ++ StubRoutines::_verify_oop_count;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
812 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
813 #endif
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
814
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
815 // Return address of code to be called from code generated by
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
816 // MacroAssembler::verify_oop.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
817 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
818 // Don't generate, rather use C++ code.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
819 address generate_verify_oop() {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
820 StubCodeMark mark(this, "StubRoutines", "verify_oop");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
821
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
822 // this is actually a `FunctionDescriptor*'.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
823 address start = 0;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
824
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
825 #if !defined(PRODUCT)
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
826 start = CAST_FROM_FN_PTR(address, verify_oop_helper);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
827 #endif
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
828
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
829 return start;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
830 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
831
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
832 // Fairer handling of safepoints for native methods.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
833 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
834 // Generate code which reads from the polling page. This special handling is needed as the
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
835 // linux-ppc64 kernel before 2.6.6 doesn't set si_addr on some segfaults in 64bit mode
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
836 // (cf. http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.6), especially when we try
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
837 // to read from the safepoint polling page.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
838 address generate_load_from_poll() {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
839 StubCodeMark mark(this, "StubRoutines", "generate_load_from_poll");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
840 address start = __ emit_fd();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
841 __ unimplemented("StubRoutines::verify_oop", 95); // TODO PPC port
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
842 return start;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
843 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
844
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
845 // -XX:+OptimizeFill : convert fill/copy loops into intrinsic
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
846 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
847 // The code is implemented(ported from sparc) as we believe it benefits JVM98, however
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
848 // tracing(-XX:+TraceOptimizeFill) shows the intrinsic replacement doesn't happen at all!
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
849 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
850 // Source code in function is_range_check_if() shows OptimizeFill relaxed the condition
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
851 // for turning on loop predication optimization, and hence the behavior of "array range check"
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
852 // and "loop invariant check" could be influenced, which potentially boosted JVM98.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
853 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
854 // We leave the code here and see if Oracle has updates in later releases(later than HS20).
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
855 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
856 // Generate stub for disjoint short fill. If "aligned" is true, the
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
857 // "to" address is assumed to be heapword aligned.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
858 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
859 // Arguments for generated stub:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
860 // to: R3_ARG1
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
861 // value: R4_ARG2
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
862 // count: R5_ARG3 treated as signed
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
863 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
864 address generate_fill(BasicType t, bool aligned, const char* name) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
865 StubCodeMark mark(this, "StubRoutines", name);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
866 address start = __ emit_fd();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
867
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
868 const Register to = R3_ARG1; // source array address
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
869 const Register value = R4_ARG2; // fill value
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
870 const Register count = R5_ARG3; // elements count
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
871 const Register temp = R6_ARG4; // temp register
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
872
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
873 //assert_clean_int(count, O3); // Make sure 'count' is clean int.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
874
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
875 Label L_exit, L_skip_align1, L_skip_align2, L_fill_byte;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
876 Label L_fill_2_bytes, L_fill_4_bytes, L_fill_elements, L_fill_32_bytes;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
877
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
878 int shift = -1;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
879 switch (t) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
880 case T_BYTE:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
881 shift = 2;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
882 // clone bytes (zero extend not needed because store instructions below ignore high order bytes)
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
883 __ rldimi(value, value, 8, 48); // 8 bit -> 16 bit
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
884 __ cmpdi(CCR0, count, 2<<shift); // Short arrays (< 8 bytes) fill by element
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
885 __ blt(CCR0, L_fill_elements);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
886 __ rldimi(value, value, 16, 32); // 16 bit -> 32 bit
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
887 break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
888 case T_SHORT:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
889 shift = 1;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
890 // clone bytes (zero extend not needed because store instructions below ignore high order bytes)
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
891 __ rldimi(value, value, 16, 32); // 16 bit -> 32 bit
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
892 __ cmpdi(CCR0, count, 2<<shift); // Short arrays (< 8 bytes) fill by element
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
893 __ blt(CCR0, L_fill_elements);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
894 break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
895 case T_INT:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
896 shift = 0;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
897 __ cmpdi(CCR0, count, 2<<shift); // Short arrays (< 8 bytes) fill by element
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
898 __ blt(CCR0, L_fill_4_bytes);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
899 break;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
900 default: ShouldNotReachHere();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
901 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
902
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
903 if (!aligned && (t == T_BYTE || t == T_SHORT)) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
904 // align source address at 4 bytes address boundary
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
905 if (t == T_BYTE) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
906 // One byte misalignment happens only for byte arrays
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
907 __ andi_(temp, to, 1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
908 __ beq(CCR0, L_skip_align1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
909 __ stb(value, 0, to);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
910 __ addi(to, to, 1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
911 __ addi(count, count, -1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
912 __ bind(L_skip_align1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
913 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
914 // Two bytes misalignment happens only for byte and short (char) arrays.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
915 __ andi_(temp, to, 2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
916 __ beq(CCR0, L_skip_align2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
917 __ sth(value, 0, to);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
918 __ addi(to, to, 2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
919 __ addi(count, count, -(1 << (shift - 1)));
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
920 __ bind(L_skip_align2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
921 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
922
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
923 if (!aligned) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
924 // Align to 8 bytes, we know we are 4 byte aligned to start.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
925 __ andi_(temp, to, 7);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
926 __ beq(CCR0, L_fill_32_bytes);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
927 __ stw(value, 0, to);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
928 __ addi(to, to, 4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
929 __ addi(count, count, -(1 << shift));
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
930 __ bind(L_fill_32_bytes);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
931 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
932
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
933 __ li(temp, 8<<shift); // prepare for 32 byte loop
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
934 // clone bytes int->long as above
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
935 __ rldimi(value, value, 32, 0); // 32 bit -> 64 bit
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
936
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
937 Label L_check_fill_8_bytes;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
938 // Fill 32-byte chunks
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
939 __ subf_(count, temp, count);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
940 __ blt(CCR0, L_check_fill_8_bytes);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
941
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
942 Label L_fill_32_bytes_loop;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
943 __ align(32);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
944 __ bind(L_fill_32_bytes_loop);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
945
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
946 __ std(value, 0, to);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
947 __ std(value, 8, to);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
948 __ subf_(count, temp, count); // update count
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
949 __ std(value, 16, to);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
950 __ std(value, 24, to);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
951
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
952 __ addi(to, to, 32);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
953 __ bge(CCR0, L_fill_32_bytes_loop);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
954
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
955 __ bind(L_check_fill_8_bytes);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
956 __ add_(count, temp, count);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
957 __ beq(CCR0, L_exit);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
958 __ addic_(count, count, -(2 << shift));
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
959 __ blt(CCR0, L_fill_4_bytes);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
960
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
961 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
962 // Length is too short, just fill 8 bytes at a time.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
963 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
964 Label L_fill_8_bytes_loop;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
965 __ bind(L_fill_8_bytes_loop);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
966 __ std(value, 0, to);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
967 __ addic_(count, count, -(2 << shift));
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
968 __ addi(to, to, 8);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
969 __ bge(CCR0, L_fill_8_bytes_loop);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
970
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
971 // fill trailing 4 bytes
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
972 __ bind(L_fill_4_bytes);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
973 __ andi_(temp, count, 1<<shift);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
974 __ beq(CCR0, L_fill_2_bytes);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
975
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
976 __ stw(value, 0, to);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
977 if (t == T_BYTE || t == T_SHORT) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
978 __ addi(to, to, 4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
979 // fill trailing 2 bytes
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
980 __ bind(L_fill_2_bytes);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
981 __ andi_(temp, count, 1<<(shift-1));
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
982 __ beq(CCR0, L_fill_byte);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
983 __ sth(value, 0, to);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
984 if (t == T_BYTE) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
985 __ addi(to, to, 2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
986 // fill trailing byte
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
987 __ bind(L_fill_byte);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
988 __ andi_(count, count, 1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
989 __ beq(CCR0, L_exit);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
990 __ stb(value, 0, to);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
991 } else {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
992 __ bind(L_fill_byte);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
993 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
994 } else {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
995 __ bind(L_fill_2_bytes);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
996 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
997 __ bind(L_exit);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
998 __ blr();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
999
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1000 // Handle copies less than 8 bytes. Int is handled elsewhere.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1001 if (t == T_BYTE) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1002 __ bind(L_fill_elements);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1003 Label L_fill_2, L_fill_4;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1004 __ andi_(temp, count, 1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1005 __ beq(CCR0, L_fill_2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1006 __ stb(value, 0, to);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1007 __ addi(to, to, 1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1008 __ bind(L_fill_2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1009 __ andi_(temp, count, 2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1010 __ beq(CCR0, L_fill_4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1011 __ stb(value, 0, to);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1012 __ stb(value, 0, to);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1013 __ addi(to, to, 2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1014 __ bind(L_fill_4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1015 __ andi_(temp, count, 4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1016 __ beq(CCR0, L_exit);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1017 __ stb(value, 0, to);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1018 __ stb(value, 1, to);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1019 __ stb(value, 2, to);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1020 __ stb(value, 3, to);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1021 __ blr();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1022 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1023
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1024 if (t == T_SHORT) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1025 Label L_fill_2;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1026 __ bind(L_fill_elements);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1027 __ andi_(temp, count, 1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1028 __ beq(CCR0, L_fill_2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1029 __ sth(value, 0, to);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1030 __ addi(to, to, 2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1031 __ bind(L_fill_2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1032 __ andi_(temp, count, 2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1033 __ beq(CCR0, L_exit);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1034 __ sth(value, 0, to);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1035 __ sth(value, 2, to);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1036 __ blr();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1037 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1038 return start;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1039 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1040
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1041
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1042 // Generate overlap test for array copy stubs
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1043 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1044 // Input:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1045 // R3_ARG1 - from
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1046 // R4_ARG2 - to
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1047 // R5_ARG3 - element count
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1048 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1049 void array_overlap_test(address no_overlap_target, int log2_elem_size) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1050 Register tmp1 = R6_ARG4;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1051 Register tmp2 = R7_ARG5;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1052
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1053 Label l_overlap;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1054 #ifdef ASSERT
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1055 __ srdi_(tmp2, R5_ARG3, 31);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1056 __ asm_assert_eq("missing zero extend", 0xAFFE);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1057 #endif
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1058
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1059 __ subf(tmp1, R3_ARG1, R4_ARG2); // distance in bytes
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1060 __ sldi(tmp2, R5_ARG3, log2_elem_size); // size in bytes
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1061 __ cmpld(CCR0, R3_ARG1, R4_ARG2); // Use unsigned comparison!
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1062 __ cmpld(CCR1, tmp1, tmp2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1063 __ crand(/*CCR0 lt*/0, /*CCR1 lt*/4+0, /*CCR0 lt*/0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1064 __ blt(CCR0, l_overlap); // Src before dst and distance smaller than size.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1065
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1066 // need to copy forwards
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1067 if (__ is_within_range_of_b(no_overlap_target, __ pc())) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1068 __ b(no_overlap_target);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1069 } else {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1070 __ load_const(tmp1, no_overlap_target, tmp2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1071 __ mtctr(tmp1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1072 __ bctr();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1073 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1074
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1075 __ bind(l_overlap);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1076 // need to copy backwards
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1077 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1078
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1079 // The guideline in the implementations of generate_disjoint_xxx_copy
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1080 // (xxx=byte,short,int,long,oop) is to copy as many elements as possible with
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1081 // single instructions, but to avoid alignment interrupts (see subsequent
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1082 // comment). Furthermore, we try to minimize misaligned access, even
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1083 // though they cause no alignment interrupt.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1084 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1085 // In Big-Endian mode, the PowerPC architecture requires implementations to
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1086 // handle automatically misaligned integer halfword and word accesses,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1087 // word-aligned integer doubleword accesses, and word-aligned floating-point
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1088 // accesses. Other accesses may or may not generate an Alignment interrupt
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1089 // depending on the implementation.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1090 // Alignment interrupt handling may require on the order of hundreds of cycles,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1091 // so every effort should be made to avoid misaligned memory values.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1092 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1093 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1094 // Generate stub for disjoint byte copy. If "aligned" is true, the
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1095 // "from" and "to" addresses are assumed to be heapword aligned.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1096 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1097 // Arguments for generated stub:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1098 // from: R3_ARG1
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1099 // to: R4_ARG2
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1100 // count: R5_ARG3 treated as signed
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1101 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1102 address generate_disjoint_byte_copy(bool aligned, const char * name) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1103 StubCodeMark mark(this, "StubRoutines", name);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1104 address start = __ emit_fd();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1105
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1106 Register tmp1 = R6_ARG4;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1107 Register tmp2 = R7_ARG5;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1108 Register tmp3 = R8_ARG6;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1109 Register tmp4 = R9_ARG7;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1110
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1111
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1112 Label l_1, l_2, l_3, l_4, l_5, l_6, l_7, l_8, l_9;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1113 // Don't try anything fancy if arrays don't have many elements.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1114 __ li(tmp3, 0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1115 __ cmpwi(CCR0, R5_ARG3, 17);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1116 __ ble(CCR0, l_6); // copy 4 at a time
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1117
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1118 if (!aligned) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1119 __ xorr(tmp1, R3_ARG1, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1120 __ andi_(tmp1, tmp1, 3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1121 __ bne(CCR0, l_6); // If arrays don't have the same alignment mod 4, do 4 element copy.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1122
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1123 // Copy elements if necessary to align to 4 bytes.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1124 __ neg(tmp1, R3_ARG1); // Compute distance to alignment boundary.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1125 __ andi_(tmp1, tmp1, 3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1126 __ beq(CCR0, l_2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1127
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1128 __ subf(R5_ARG3, tmp1, R5_ARG3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1129 __ bind(l_9);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1130 __ lbz(tmp2, 0, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1131 __ addic_(tmp1, tmp1, -1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1132 __ stb(tmp2, 0, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1133 __ addi(R3_ARG1, R3_ARG1, 1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1134 __ addi(R4_ARG2, R4_ARG2, 1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1135 __ bne(CCR0, l_9);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1136
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1137 __ bind(l_2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1138 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1139
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1140 // copy 8 elements at a time
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1141 __ xorr(tmp2, R3_ARG1, R4_ARG2); // skip if src & dest have differing alignment mod 8
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1142 __ andi_(tmp1, tmp2, 7);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1143 __ bne(CCR0, l_7); // not same alignment -> to or from is aligned -> copy 8
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1144
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1145 // copy a 2-element word if necessary to align to 8 bytes
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1146 __ andi_(R0, R3_ARG1, 7);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1147 __ beq(CCR0, l_7);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1148
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1149 __ lwzx(tmp2, R3_ARG1, tmp3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1150 __ addi(R5_ARG3, R5_ARG3, -4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1151 __ stwx(tmp2, R4_ARG2, tmp3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1152 { // FasterArrayCopy
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1153 __ addi(R3_ARG1, R3_ARG1, 4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1154 __ addi(R4_ARG2, R4_ARG2, 4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1155 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1156 __ bind(l_7);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1157
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1158 { // FasterArrayCopy
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1159 __ cmpwi(CCR0, R5_ARG3, 31);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1160 __ ble(CCR0, l_6); // copy 2 at a time if less than 32 elements remain
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1161
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1162 __ srdi(tmp1, R5_ARG3, 5);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1163 __ andi_(R5_ARG3, R5_ARG3, 31);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1164 __ mtctr(tmp1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1165
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1166 __ bind(l_8);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1167 // Use unrolled version for mass copying (copy 32 elements a time)
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1168 // Load feeding store gets zero latency on Power6, however not on Power5.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1169 // Therefore, the following sequence is made for the good of both.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1170 __ ld(tmp1, 0, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1171 __ ld(tmp2, 8, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1172 __ ld(tmp3, 16, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1173 __ ld(tmp4, 24, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1174 __ std(tmp1, 0, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1175 __ std(tmp2, 8, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1176 __ std(tmp3, 16, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1177 __ std(tmp4, 24, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1178 __ addi(R3_ARG1, R3_ARG1, 32);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1179 __ addi(R4_ARG2, R4_ARG2, 32);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1180 __ bdnz(l_8);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1181 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1182
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1183 __ bind(l_6);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1184
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1185 // copy 4 elements at a time
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1186 __ cmpwi(CCR0, R5_ARG3, 4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1187 __ blt(CCR0, l_1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1188 __ srdi(tmp1, R5_ARG3, 2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1189 __ mtctr(tmp1); // is > 0
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1190 __ andi_(R5_ARG3, R5_ARG3, 3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1191
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1192 { // FasterArrayCopy
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1193 __ addi(R3_ARG1, R3_ARG1, -4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1194 __ addi(R4_ARG2, R4_ARG2, -4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1195 __ bind(l_3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1196 __ lwzu(tmp2, 4, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1197 __ stwu(tmp2, 4, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1198 __ bdnz(l_3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1199 __ addi(R3_ARG1, R3_ARG1, 4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1200 __ addi(R4_ARG2, R4_ARG2, 4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1201 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1202
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1203 // do single element copy
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1204 __ bind(l_1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1205 __ cmpwi(CCR0, R5_ARG3, 0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1206 __ beq(CCR0, l_4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1207
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1208 { // FasterArrayCopy
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1209 __ mtctr(R5_ARG3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1210 __ addi(R3_ARG1, R3_ARG1, -1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1211 __ addi(R4_ARG2, R4_ARG2, -1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1212
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1213 __ bind(l_5);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1214 __ lbzu(tmp2, 1, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1215 __ stbu(tmp2, 1, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1216 __ bdnz(l_5);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1217 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1218
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1219 __ bind(l_4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1220 __ blr();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1221
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1222 return start;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1223 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1224
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1225 // Generate stub for conjoint byte copy. If "aligned" is true, the
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1226 // "from" and "to" addresses are assumed to be heapword aligned.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1227 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1228 // Arguments for generated stub:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1229 // from: R3_ARG1
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1230 // to: R4_ARG2
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1231 // count: R5_ARG3 treated as signed
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1232 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1233 address generate_conjoint_byte_copy(bool aligned, const char * name) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1234 StubCodeMark mark(this, "StubRoutines", name);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1235 address start = __ emit_fd();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1236
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1237 Register tmp1 = R6_ARG4;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1238 Register tmp2 = R7_ARG5;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1239 Register tmp3 = R8_ARG6;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1240
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1241 address nooverlap_target = aligned ?
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1242 ((FunctionDescriptor*)StubRoutines::arrayof_jbyte_disjoint_arraycopy())->entry() :
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1243 ((FunctionDescriptor*)StubRoutines::jbyte_disjoint_arraycopy())->entry();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1244
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1245 array_overlap_test(nooverlap_target, 0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1246 // Do reverse copy. We assume the case of actual overlap is rare enough
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1247 // that we don't have to optimize it.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1248 Label l_1, l_2;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1249
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1250 __ b(l_2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1251 __ bind(l_1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1252 __ stbx(tmp1, R4_ARG2, R5_ARG3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1253 __ bind(l_2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1254 __ addic_(R5_ARG3, R5_ARG3, -1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1255 __ lbzx(tmp1, R3_ARG1, R5_ARG3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1256 __ bge(CCR0, l_1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1257
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1258 __ blr();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1259
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1260 return start;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1261 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1262
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1263 // Generate stub for disjoint short copy. If "aligned" is true, the
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1264 // "from" and "to" addresses are assumed to be heapword aligned.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1265 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1266 // Arguments for generated stub:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1267 // from: R3_ARG1
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1268 // to: R4_ARG2
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1269 // elm.count: R5_ARG3 treated as signed
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1270 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1271 // Strategy for aligned==true:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1272 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1273 // If length <= 9:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1274 // 1. copy 2 elements at a time (l_6)
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1275 // 2. copy last element if original element count was odd (l_1)
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1276 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1277 // If length > 9:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1278 // 1. copy 4 elements at a time until less than 4 elements are left (l_7)
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1279 // 2. copy 2 elements at a time until less than 2 elements are left (l_6)
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1280 // 3. copy last element if one was left in step 2. (l_1)
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1281 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1282 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1283 // Strategy for aligned==false:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1284 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1285 // If length <= 9: same as aligned==true case, but NOTE: load/stores
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1286 // can be unaligned (see comment below)
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1287 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1288 // If length > 9:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1289 // 1. continue with step 6. if the alignment of from and to mod 4
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1290 // is different.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1291 // 2. align from and to to 4 bytes by copying 1 element if necessary
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1292 // 3. at l_2 from and to are 4 byte aligned; continue with
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1293 // 5. if they cannot be aligned to 8 bytes because they have
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1294 // got different alignment mod 8.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1295 // 4. at this point we know that both, from and to, have the same
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1296 // alignment mod 8, now copy one element if necessary to get
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1297 // 8 byte alignment of from and to.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1298 // 5. copy 4 elements at a time until less than 4 elements are
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1299 // left; depending on step 3. all load/stores are aligned or
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1300 // either all loads or all stores are unaligned.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1301 // 6. copy 2 elements at a time until less than 2 elements are
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1302 // left (l_6); arriving here from step 1., there is a chance
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1303 // that all accesses are unaligned.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1304 // 7. copy last element if one was left in step 6. (l_1)
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1305 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1306 // There are unaligned data accesses using integer load/store
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1307 // instructions in this stub. POWER allows such accesses.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1308 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1309 // According to the manuals (PowerISA_V2.06_PUBLIC, Book II,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1310 // Chapter 2: Effect of Operand Placement on Performance) unaligned
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1311 // integer load/stores have good performance. Only unaligned
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1312 // floating point load/stores can have poor performance.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1313 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1314 // TODO:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1315 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1316 // 1. check if aligning the backbranch target of loops is beneficial
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1317 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1318 address generate_disjoint_short_copy(bool aligned, const char * name) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1319 StubCodeMark mark(this, "StubRoutines", name);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1320
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1321 Register tmp1 = R6_ARG4;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1322 Register tmp2 = R7_ARG5;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1323 Register tmp3 = R8_ARG6;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1324 Register tmp4 = R9_ARG7;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1325
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1326 address start = __ emit_fd();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1327
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1328 Label l_1, l_2, l_3, l_4, l_5, l_6, l_7, l_8;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1329 // don't try anything fancy if arrays don't have many elements
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1330 __ li(tmp3, 0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1331 __ cmpwi(CCR0, R5_ARG3, 9);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1332 __ ble(CCR0, l_6); // copy 2 at a time
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1333
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1334 if (!aligned) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1335 __ xorr(tmp1, R3_ARG1, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1336 __ andi_(tmp1, tmp1, 3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1337 __ bne(CCR0, l_6); // if arrays don't have the same alignment mod 4, do 2 element copy
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1338
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1339 // At this point it is guaranteed that both, from and to have the same alignment mod 4.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1340
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1341 // Copy 1 element if necessary to align to 4 bytes.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1342 __ andi_(tmp1, R3_ARG1, 3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1343 __ beq(CCR0, l_2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1344
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1345 __ lhz(tmp2, 0, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1346 __ addi(R3_ARG1, R3_ARG1, 2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1347 __ sth(tmp2, 0, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1348 __ addi(R4_ARG2, R4_ARG2, 2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1349 __ addi(R5_ARG3, R5_ARG3, -1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1350 __ bind(l_2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1351
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1352 // At this point the positions of both, from and to, are at least 4 byte aligned.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1353
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1354 // Copy 4 elements at a time.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1355 // Align to 8 bytes, but only if both, from and to, have same alignment mod 8.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1356 __ xorr(tmp2, R3_ARG1, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1357 __ andi_(tmp1, tmp2, 7);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1358 __ bne(CCR0, l_7); // not same alignment mod 8 -> copy 4, either from or to will be unaligned
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1359
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1360 // Copy a 2-element word if necessary to align to 8 bytes.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1361 __ andi_(R0, R3_ARG1, 7);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1362 __ beq(CCR0, l_7);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1363
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1364 __ lwzx(tmp2, R3_ARG1, tmp3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1365 __ addi(R5_ARG3, R5_ARG3, -2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1366 __ stwx(tmp2, R4_ARG2, tmp3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1367 { // FasterArrayCopy
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1368 __ addi(R3_ARG1, R3_ARG1, 4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1369 __ addi(R4_ARG2, R4_ARG2, 4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1370 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1371 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1372
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1373 __ bind(l_7);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1374
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1375 // Copy 4 elements at a time; either the loads or the stores can
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1376 // be unaligned if aligned == false.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1377
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1378 { // FasterArrayCopy
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1379 __ cmpwi(CCR0, R5_ARG3, 15);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1380 __ ble(CCR0, l_6); // copy 2 at a time if less than 16 elements remain
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1381
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1382 __ srdi(tmp1, R5_ARG3, 4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1383 __ andi_(R5_ARG3, R5_ARG3, 15);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1384 __ mtctr(tmp1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1385
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1386 __ bind(l_8);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1387 // Use unrolled version for mass copying (copy 16 elements a time).
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1388 // Load feeding store gets zero latency on Power6, however not on Power5.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1389 // Therefore, the following sequence is made for the good of both.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1390 __ ld(tmp1, 0, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1391 __ ld(tmp2, 8, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1392 __ ld(tmp3, 16, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1393 __ ld(tmp4, 24, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1394 __ std(tmp1, 0, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1395 __ std(tmp2, 8, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1396 __ std(tmp3, 16, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1397 __ std(tmp4, 24, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1398 __ addi(R3_ARG1, R3_ARG1, 32);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1399 __ addi(R4_ARG2, R4_ARG2, 32);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1400 __ bdnz(l_8);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1401 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1402 __ bind(l_6);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1403
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1404 // copy 2 elements at a time
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1405 { // FasterArrayCopy
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1406 __ cmpwi(CCR0, R5_ARG3, 2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1407 __ blt(CCR0, l_1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1408 __ srdi(tmp1, R5_ARG3, 1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1409 __ andi_(R5_ARG3, R5_ARG3, 1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1410
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1411 __ addi(R3_ARG1, R3_ARG1, -4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1412 __ addi(R4_ARG2, R4_ARG2, -4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1413 __ mtctr(tmp1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1414
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1415 __ bind(l_3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1416 __ lwzu(tmp2, 4, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1417 __ stwu(tmp2, 4, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1418 __ bdnz(l_3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1419
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1420 __ addi(R3_ARG1, R3_ARG1, 4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1421 __ addi(R4_ARG2, R4_ARG2, 4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1422 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1423
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1424 // do single element copy
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1425 __ bind(l_1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1426 __ cmpwi(CCR0, R5_ARG3, 0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1427 __ beq(CCR0, l_4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1428
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1429 { // FasterArrayCopy
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1430 __ mtctr(R5_ARG3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1431 __ addi(R3_ARG1, R3_ARG1, -2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1432 __ addi(R4_ARG2, R4_ARG2, -2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1433
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1434 __ bind(l_5);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1435 __ lhzu(tmp2, 2, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1436 __ sthu(tmp2, 2, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1437 __ bdnz(l_5);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1438 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1439 __ bind(l_4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1440 __ blr();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1441
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1442 return start;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1443 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1444
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1445 // Generate stub for conjoint short copy. If "aligned" is true, the
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1446 // "from" and "to" addresses are assumed to be heapword aligned.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1447 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1448 // Arguments for generated stub:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1449 // from: R3_ARG1
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1450 // to: R4_ARG2
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1451 // count: R5_ARG3 treated as signed
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1452 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1453 address generate_conjoint_short_copy(bool aligned, const char * name) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1454 StubCodeMark mark(this, "StubRoutines", name);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1455 address start = __ emit_fd();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1456
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1457 Register tmp1 = R6_ARG4;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1458 Register tmp2 = R7_ARG5;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1459 Register tmp3 = R8_ARG6;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1460
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1461 address nooverlap_target = aligned ?
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1462 ((FunctionDescriptor*)StubRoutines::arrayof_jshort_disjoint_arraycopy())->entry() :
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1463 ((FunctionDescriptor*)StubRoutines::jshort_disjoint_arraycopy())->entry();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1464
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1465 array_overlap_test(nooverlap_target, 1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1466
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1467 Label l_1, l_2;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1468 __ sldi(tmp1, R5_ARG3, 1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1469 __ b(l_2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1470 __ bind(l_1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1471 __ sthx(tmp2, R4_ARG2, tmp1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1472 __ bind(l_2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1473 __ addic_(tmp1, tmp1, -2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1474 __ lhzx(tmp2, R3_ARG1, tmp1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1475 __ bge(CCR0, l_1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1476
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1477 __ blr();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1478
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1479 return start;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1480 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1481
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1482 // Generate core code for disjoint int copy (and oop copy on 32-bit). If "aligned"
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1483 // is true, the "from" and "to" addresses are assumed to be heapword aligned.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1484 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1485 // Arguments:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1486 // from: R3_ARG1
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1487 // to: R4_ARG2
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1488 // count: R5_ARG3 treated as signed
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1489 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1490 void generate_disjoint_int_copy_core(bool aligned) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1491 Register tmp1 = R6_ARG4;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1492 Register tmp2 = R7_ARG5;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1493 Register tmp3 = R8_ARG6;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1494 Register tmp4 = R0;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1495
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1496 Label l_1, l_2, l_3, l_4, l_5, l_6;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1497 // for short arrays, just do single element copy
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1498 __ li(tmp3, 0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1499 __ cmpwi(CCR0, R5_ARG3, 5);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1500 __ ble(CCR0, l_2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1501
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1502 if (!aligned) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1503 // check if arrays have same alignment mod 8.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1504 __ xorr(tmp1, R3_ARG1, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1505 __ andi_(R0, tmp1, 7);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1506 // Not the same alignment, but ld and std just need to be 4 byte aligned.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1507 __ bne(CCR0, l_4); // to OR from is 8 byte aligned -> copy 2 at a time
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1508
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1509 // copy 1 element to align to and from on an 8 byte boundary
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1510 __ andi_(R0, R3_ARG1, 7);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1511 __ beq(CCR0, l_4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1512
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1513 __ lwzx(tmp2, R3_ARG1, tmp3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1514 __ addi(R5_ARG3, R5_ARG3, -1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1515 __ stwx(tmp2, R4_ARG2, tmp3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1516 { // FasterArrayCopy
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1517 __ addi(R3_ARG1, R3_ARG1, 4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1518 __ addi(R4_ARG2, R4_ARG2, 4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1519 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1520 __ bind(l_4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1521 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1522
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1523 { // FasterArrayCopy
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1524 __ cmpwi(CCR0, R5_ARG3, 7);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1525 __ ble(CCR0, l_2); // copy 1 at a time if less than 8 elements remain
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1526
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1527 __ srdi(tmp1, R5_ARG3, 3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1528 __ andi_(R5_ARG3, R5_ARG3, 7);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1529 __ mtctr(tmp1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1530
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1531 __ bind(l_6);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1532 // Use unrolled version for mass copying (copy 8 elements a time).
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1533 // Load feeding store gets zero latency on power6, however not on power 5.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1534 // Therefore, the following sequence is made for the good of both.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1535 __ ld(tmp1, 0, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1536 __ ld(tmp2, 8, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1537 __ ld(tmp3, 16, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1538 __ ld(tmp4, 24, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1539 __ std(tmp1, 0, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1540 __ std(tmp2, 8, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1541 __ std(tmp3, 16, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1542 __ std(tmp4, 24, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1543 __ addi(R3_ARG1, R3_ARG1, 32);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1544 __ addi(R4_ARG2, R4_ARG2, 32);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1545 __ bdnz(l_6);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1546 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1547
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1548 // copy 1 element at a time
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1549 __ bind(l_2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1550 __ cmpwi(CCR0, R5_ARG3, 0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1551 __ beq(CCR0, l_1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1552
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1553 { // FasterArrayCopy
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1554 __ mtctr(R5_ARG3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1555 __ addi(R3_ARG1, R3_ARG1, -4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1556 __ addi(R4_ARG2, R4_ARG2, -4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1557
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1558 __ bind(l_3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1559 __ lwzu(tmp2, 4, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1560 __ stwu(tmp2, 4, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1561 __ bdnz(l_3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1562 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1563
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1564 __ bind(l_1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1565 return;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1566 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1567
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1568 // Generate stub for disjoint int copy. If "aligned" is true, the
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1569 // "from" and "to" addresses are assumed to be heapword aligned.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1570 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1571 // Arguments for generated stub:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1572 // from: R3_ARG1
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1573 // to: R4_ARG2
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1574 // count: R5_ARG3 treated as signed
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1575 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1576 address generate_disjoint_int_copy(bool aligned, const char * name) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1577 StubCodeMark mark(this, "StubRoutines", name);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1578 address start = __ emit_fd();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1579 generate_disjoint_int_copy_core(aligned);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1580 __ blr();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1581 return start;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1582 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1583
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1584 // Generate core code for conjoint int copy (and oop copy on
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1585 // 32-bit). If "aligned" is true, the "from" and "to" addresses
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1586 // are assumed to be heapword aligned.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1587 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1588 // Arguments:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1589 // from: R3_ARG1
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1590 // to: R4_ARG2
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1591 // count: R5_ARG3 treated as signed
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1592 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1593 void generate_conjoint_int_copy_core(bool aligned) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1594 // Do reverse copy. We assume the case of actual overlap is rare enough
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1595 // that we don't have to optimize it.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1596
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1597 Label l_1, l_2, l_3, l_4, l_5, l_6;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1598
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1599 Register tmp1 = R6_ARG4;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1600 Register tmp2 = R7_ARG5;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1601 Register tmp3 = R8_ARG6;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1602 Register tmp4 = R0;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1603
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1604 { // FasterArrayCopy
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1605 __ cmpwi(CCR0, R5_ARG3, 0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1606 __ beq(CCR0, l_6);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1607
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1608 __ sldi(R5_ARG3, R5_ARG3, 2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1609 __ add(R3_ARG1, R3_ARG1, R5_ARG3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1610 __ add(R4_ARG2, R4_ARG2, R5_ARG3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1611 __ srdi(R5_ARG3, R5_ARG3, 2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1612
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1613 __ cmpwi(CCR0, R5_ARG3, 7);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1614 __ ble(CCR0, l_5); // copy 1 at a time if less than 8 elements remain
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1615
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1616 __ srdi(tmp1, R5_ARG3, 3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1617 __ andi(R5_ARG3, R5_ARG3, 7);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1618 __ mtctr(tmp1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1619
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1620 __ bind(l_4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1621 // Use unrolled version for mass copying (copy 4 elements a time).
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1622 // Load feeding store gets zero latency on Power6, however not on Power5.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1623 // Therefore, the following sequence is made for the good of both.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1624 __ addi(R3_ARG1, R3_ARG1, -32);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1625 __ addi(R4_ARG2, R4_ARG2, -32);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1626 __ ld(tmp4, 24, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1627 __ ld(tmp3, 16, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1628 __ ld(tmp2, 8, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1629 __ ld(tmp1, 0, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1630 __ std(tmp4, 24, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1631 __ std(tmp3, 16, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1632 __ std(tmp2, 8, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1633 __ std(tmp1, 0, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1634 __ bdnz(l_4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1635
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1636 __ cmpwi(CCR0, R5_ARG3, 0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1637 __ beq(CCR0, l_6);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1638
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1639 __ bind(l_5);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1640 __ mtctr(R5_ARG3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1641 __ bind(l_3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1642 __ lwz(R0, -4, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1643 __ stw(R0, -4, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1644 __ addi(R3_ARG1, R3_ARG1, -4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1645 __ addi(R4_ARG2, R4_ARG2, -4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1646 __ bdnz(l_3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1647
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1648 __ bind(l_6);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1649 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1650 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1651
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1652 // Generate stub for conjoint int copy. If "aligned" is true, the
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1653 // "from" and "to" addresses are assumed to be heapword aligned.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1654 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1655 // Arguments for generated stub:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1656 // from: R3_ARG1
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1657 // to: R4_ARG2
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1658 // count: R5_ARG3 treated as signed
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1659 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1660 address generate_conjoint_int_copy(bool aligned, const char * name) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1661 StubCodeMark mark(this, "StubRoutines", name);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1662 address start = __ emit_fd();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1663
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1664 address nooverlap_target = aligned ?
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1665 ((FunctionDescriptor*)StubRoutines::arrayof_jint_disjoint_arraycopy())->entry() :
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1666 ((FunctionDescriptor*)StubRoutines::jint_disjoint_arraycopy())->entry();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1667
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1668 array_overlap_test(nooverlap_target, 2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1669
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1670 generate_conjoint_int_copy_core(aligned);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1671
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1672 __ blr();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1673
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1674 return start;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1675 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1676
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1677 // Generate core code for disjoint long copy (and oop copy on
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1678 // 64-bit). If "aligned" is true, the "from" and "to" addresses
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1679 // are assumed to be heapword aligned.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1680 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1681 // Arguments:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1682 // from: R3_ARG1
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1683 // to: R4_ARG2
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1684 // count: R5_ARG3 treated as signed
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1685 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1686 void generate_disjoint_long_copy_core(bool aligned) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1687 Register tmp1 = R6_ARG4;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1688 Register tmp2 = R7_ARG5;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1689 Register tmp3 = R8_ARG6;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1690 Register tmp4 = R0;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1691
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1692 Label l_1, l_2, l_3, l_4;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1693
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1694 { // FasterArrayCopy
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1695 __ cmpwi(CCR0, R5_ARG3, 3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1696 __ ble(CCR0, l_3); // copy 1 at a time if less than 4 elements remain
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1697
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1698 __ srdi(tmp1, R5_ARG3, 2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1699 __ andi_(R5_ARG3, R5_ARG3, 3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1700 __ mtctr(tmp1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1701
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1702 __ bind(l_4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1703 // Use unrolled version for mass copying (copy 4 elements a time).
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1704 // Load feeding store gets zero latency on Power6, however not on Power5.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1705 // Therefore, the following sequence is made for the good of both.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1706 __ ld(tmp1, 0, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1707 __ ld(tmp2, 8, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1708 __ ld(tmp3, 16, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1709 __ ld(tmp4, 24, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1710 __ std(tmp1, 0, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1711 __ std(tmp2, 8, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1712 __ std(tmp3, 16, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1713 __ std(tmp4, 24, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1714 __ addi(R3_ARG1, R3_ARG1, 32);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1715 __ addi(R4_ARG2, R4_ARG2, 32);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1716 __ bdnz(l_4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1717 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1718
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1719 // copy 1 element at a time
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1720 __ bind(l_3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1721 __ cmpwi(CCR0, R5_ARG3, 0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1722 __ beq(CCR0, l_1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1723
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1724 { // FasterArrayCopy
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1725 __ mtctr(R5_ARG3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1726 __ addi(R3_ARG1, R3_ARG1, -8);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1727 __ addi(R4_ARG2, R4_ARG2, -8);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1728
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1729 __ bind(l_2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1730 __ ldu(R0, 8, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1731 __ stdu(R0, 8, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1732 __ bdnz(l_2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1733
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1734 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1735 __ bind(l_1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1736 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1737
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1738 // Generate stub for disjoint long copy. If "aligned" is true, the
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1739 // "from" and "to" addresses are assumed to be heapword aligned.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1740 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1741 // Arguments for generated stub:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1742 // from: R3_ARG1
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1743 // to: R4_ARG2
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1744 // count: R5_ARG3 treated as signed
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1745 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1746 address generate_disjoint_long_copy(bool aligned, const char * name) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1747 StubCodeMark mark(this, "StubRoutines", name);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1748 address start = __ emit_fd();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1749 generate_disjoint_long_copy_core(aligned);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1750 __ blr();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1751
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1752 return start;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1753 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1754
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1755 // Generate core code for conjoint long copy (and oop copy on
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1756 // 64-bit). If "aligned" is true, the "from" and "to" addresses
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1757 // are assumed to be heapword aligned.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1758 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1759 // Arguments:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1760 // from: R3_ARG1
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1761 // to: R4_ARG2
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1762 // count: R5_ARG3 treated as signed
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1763 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1764 void generate_conjoint_long_copy_core(bool aligned) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1765 Register tmp1 = R6_ARG4;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1766 Register tmp2 = R7_ARG5;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1767 Register tmp3 = R8_ARG6;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1768 Register tmp4 = R0;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1769
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1770 Label l_1, l_2, l_3, l_4, l_5;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1771
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1772 __ cmpwi(CCR0, R5_ARG3, 0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1773 __ beq(CCR0, l_1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1774
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1775 { // FasterArrayCopy
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1776 __ sldi(R5_ARG3, R5_ARG3, 3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1777 __ add(R3_ARG1, R3_ARG1, R5_ARG3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1778 __ add(R4_ARG2, R4_ARG2, R5_ARG3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1779 __ srdi(R5_ARG3, R5_ARG3, 3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1780
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1781 __ cmpwi(CCR0, R5_ARG3, 3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1782 __ ble(CCR0, l_5); // copy 1 at a time if less than 4 elements remain
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1783
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1784 __ srdi(tmp1, R5_ARG3, 2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1785 __ andi(R5_ARG3, R5_ARG3, 3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1786 __ mtctr(tmp1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1787
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1788 __ bind(l_4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1789 // Use unrolled version for mass copying (copy 4 elements a time).
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1790 // Load feeding store gets zero latency on Power6, however not on Power5.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1791 // Therefore, the following sequence is made for the good of both.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1792 __ addi(R3_ARG1, R3_ARG1, -32);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1793 __ addi(R4_ARG2, R4_ARG2, -32);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1794 __ ld(tmp4, 24, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1795 __ ld(tmp3, 16, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1796 __ ld(tmp2, 8, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1797 __ ld(tmp1, 0, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1798 __ std(tmp4, 24, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1799 __ std(tmp3, 16, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1800 __ std(tmp2, 8, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1801 __ std(tmp1, 0, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1802 __ bdnz(l_4);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1803
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1804 __ cmpwi(CCR0, R5_ARG3, 0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1805 __ beq(CCR0, l_1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1806
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1807 __ bind(l_5);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1808 __ mtctr(R5_ARG3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1809 __ bind(l_3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1810 __ ld(R0, -8, R3_ARG1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1811 __ std(R0, -8, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1812 __ addi(R3_ARG1, R3_ARG1, -8);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1813 __ addi(R4_ARG2, R4_ARG2, -8);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1814 __ bdnz(l_3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1815
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1816 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1817 __ bind(l_1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1818 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1819
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1820 // Generate stub for conjoint long copy. If "aligned" is true, the
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1821 // "from" and "to" addresses are assumed to be heapword aligned.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1822 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1823 // Arguments for generated stub:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1824 // from: R3_ARG1
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1825 // to: R4_ARG2
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1826 // count: R5_ARG3 treated as signed
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1827 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1828 address generate_conjoint_long_copy(bool aligned, const char * name) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1829 StubCodeMark mark(this, "StubRoutines", name);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1830 address start = __ emit_fd();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1831
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1832 address nooverlap_target = aligned ?
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1833 ((FunctionDescriptor*)StubRoutines::arrayof_jlong_disjoint_arraycopy())->entry() :
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1834 ((FunctionDescriptor*)StubRoutines::jlong_disjoint_arraycopy())->entry();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1835
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1836 array_overlap_test(nooverlap_target, 3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1837 generate_conjoint_long_copy_core(aligned);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1838
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1839 __ blr();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1840
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1841 return start;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1842 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1843
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1844 // Generate stub for conjoint oop copy. If "aligned" is true, the
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1845 // "from" and "to" addresses are assumed to be heapword aligned.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1846 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1847 // Arguments for generated stub:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1848 // from: R3_ARG1
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1849 // to: R4_ARG2
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1850 // count: R5_ARG3 treated as signed
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1851 // dest_uninitialized: G1 support
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1852 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1853 address generate_conjoint_oop_copy(bool aligned, const char * name, bool dest_uninitialized) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1854 StubCodeMark mark(this, "StubRoutines", name);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1855
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1856 address start = __ emit_fd();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1857
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1858 address nooverlap_target = aligned ?
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1859 ((FunctionDescriptor*)StubRoutines::arrayof_oop_disjoint_arraycopy())->entry() :
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1860 ((FunctionDescriptor*)StubRoutines::oop_disjoint_arraycopy())->entry();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1861
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1862 gen_write_ref_array_pre_barrier(R3_ARG1, R4_ARG2, R5_ARG3, dest_uninitialized, R9_ARG7);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1863
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1864 // Save arguments.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1865 __ mr(R9_ARG7, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1866 __ mr(R10_ARG8, R5_ARG3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1867
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1868 if (UseCompressedOops) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1869 array_overlap_test(nooverlap_target, 2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1870 generate_conjoint_int_copy_core(aligned);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1871 } else {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1872 array_overlap_test(nooverlap_target, 3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1873 generate_conjoint_long_copy_core(aligned);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1874 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1875
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1876 gen_write_ref_array_post_barrier(R9_ARG7, R10_ARG8, R11_scratch1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1877
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1878 __ blr();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1879
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1880 return start;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1881 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1882
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1883 // Generate stub for disjoint oop copy. If "aligned" is true, the
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1884 // "from" and "to" addresses are assumed to be heapword aligned.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1885 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1886 // Arguments for generated stub:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1887 // from: R3_ARG1
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1888 // to: R4_ARG2
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1889 // count: R5_ARG3 treated as signed
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1890 // dest_uninitialized: G1 support
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1891 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1892 address generate_disjoint_oop_copy(bool aligned, const char * name, bool dest_uninitialized) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1893 StubCodeMark mark(this, "StubRoutines", name);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1894 address start = __ emit_fd();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1895
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1896 gen_write_ref_array_pre_barrier(R3_ARG1, R4_ARG2, R5_ARG3, dest_uninitialized, R9_ARG7);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1897
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1898 // save some arguments, disjoint_long_copy_core destroys them.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1899 // needed for post barrier
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1900 __ mr(R9_ARG7, R4_ARG2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1901 __ mr(R10_ARG8, R5_ARG3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1902
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1903 if (UseCompressedOops) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1904 generate_disjoint_int_copy_core(aligned);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1905 } else {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1906 generate_disjoint_long_copy_core(aligned);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1907 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1908
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1909 gen_write_ref_array_post_barrier(R9_ARG7, R10_ARG8, R11_scratch1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1910
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1911 __ blr();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1912
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1913 return start;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1914 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1915
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1916 void generate_arraycopy_stubs() {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1917 // Note: the disjoint stubs must be generated first, some of
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1918 // the conjoint stubs use them.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1919
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1920 // non-aligned disjoint versions
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1921 StubRoutines::_jbyte_disjoint_arraycopy = generate_disjoint_byte_copy(false, "jbyte_disjoint_arraycopy");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1922 StubRoutines::_jshort_disjoint_arraycopy = generate_disjoint_short_copy(false, "jshort_disjoint_arraycopy");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1923 StubRoutines::_jint_disjoint_arraycopy = generate_disjoint_int_copy(false, "jint_disjoint_arraycopy");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1924 StubRoutines::_jlong_disjoint_arraycopy = generate_disjoint_long_copy(false, "jlong_disjoint_arraycopy");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1925 StubRoutines::_oop_disjoint_arraycopy = generate_disjoint_oop_copy(false, "oop_disjoint_arraycopy", false);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1926 StubRoutines::_oop_disjoint_arraycopy_uninit = generate_disjoint_oop_copy(false, "oop_disjoint_arraycopy_uninit", true);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1927
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1928 // aligned disjoint versions
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1929 StubRoutines::_arrayof_jbyte_disjoint_arraycopy = generate_disjoint_byte_copy(true, "arrayof_jbyte_disjoint_arraycopy");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1930 StubRoutines::_arrayof_jshort_disjoint_arraycopy = generate_disjoint_short_copy(true, "arrayof_jshort_disjoint_arraycopy");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1931 StubRoutines::_arrayof_jint_disjoint_arraycopy = generate_disjoint_int_copy(true, "arrayof_jint_disjoint_arraycopy");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1932 StubRoutines::_arrayof_jlong_disjoint_arraycopy = generate_disjoint_long_copy(true, "arrayof_jlong_disjoint_arraycopy");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1933 StubRoutines::_arrayof_oop_disjoint_arraycopy = generate_disjoint_oop_copy(true, "arrayof_oop_disjoint_arraycopy", false);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1934 StubRoutines::_arrayof_oop_disjoint_arraycopy_uninit = generate_disjoint_oop_copy(true, "oop_disjoint_arraycopy_uninit", true);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1935
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1936 // non-aligned conjoint versions
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1937 StubRoutines::_jbyte_arraycopy = generate_conjoint_byte_copy(false, "jbyte_arraycopy");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1938 StubRoutines::_jshort_arraycopy = generate_conjoint_short_copy(false, "jshort_arraycopy");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1939 StubRoutines::_jint_arraycopy = generate_conjoint_int_copy(false, "jint_arraycopy");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1940 StubRoutines::_jlong_arraycopy = generate_conjoint_long_copy(false, "jlong_arraycopy");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1941 StubRoutines::_oop_arraycopy = generate_conjoint_oop_copy(false, "oop_arraycopy", false);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1942 StubRoutines::_oop_arraycopy_uninit = generate_conjoint_oop_copy(false, "oop_arraycopy_uninit", true);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1943
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1944 // aligned conjoint versions
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1945 StubRoutines::_arrayof_jbyte_arraycopy = generate_conjoint_byte_copy(true, "arrayof_jbyte_arraycopy");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1946 StubRoutines::_arrayof_jshort_arraycopy = generate_conjoint_short_copy(true, "arrayof_jshort_arraycopy");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1947 StubRoutines::_arrayof_jint_arraycopy = generate_conjoint_int_copy(true, "arrayof_jint_arraycopy");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1948 StubRoutines::_arrayof_jlong_arraycopy = generate_conjoint_long_copy(true, "arrayof_jlong_arraycopy");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1949 StubRoutines::_arrayof_oop_arraycopy = generate_conjoint_oop_copy(true, "arrayof_oop_arraycopy", false);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1950 StubRoutines::_arrayof_oop_arraycopy_uninit = generate_conjoint_oop_copy(true, "arrayof_oop_arraycopy", true);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1951
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1952 // fill routines
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1953 StubRoutines::_jbyte_fill = generate_fill(T_BYTE, false, "jbyte_fill");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1954 StubRoutines::_jshort_fill = generate_fill(T_SHORT, false, "jshort_fill");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1955 StubRoutines::_jint_fill = generate_fill(T_INT, false, "jint_fill");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1956 StubRoutines::_arrayof_jbyte_fill = generate_fill(T_BYTE, true, "arrayof_jbyte_fill");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1957 StubRoutines::_arrayof_jshort_fill = generate_fill(T_SHORT, true, "arrayof_jshort_fill");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1958 StubRoutines::_arrayof_jint_fill = generate_fill(T_INT, true, "arrayof_jint_fill");
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1959 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1960
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1961 // Safefetch stubs.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1962 void generate_safefetch(const char* name, int size, address* entry, address* fault_pc, address* continuation_pc) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1963 // safefetch signatures:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1964 // int SafeFetch32(int* adr, int errValue);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1965 // intptr_t SafeFetchN (intptr_t* adr, intptr_t errValue);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1966 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1967 // arguments:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1968 // R3_ARG1 = adr
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1969 // R4_ARG2 = errValue
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1970 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1971 // result:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1972 // R3_RET = *adr or errValue
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1973
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1974 StubCodeMark mark(this, "StubRoutines", name);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1975
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1976 // Entry point, pc or function descriptor.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
1977 *entry = __ emit_fd();
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1978
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1979 // Load *adr into R4_ARG2, may fault.
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1980 *fault_pc = __ pc();
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1981 switch (size) {
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1982 case 4:
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1983 // int32_t, signed extended
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1984 __ lwa(R4_ARG2, 0, R3_ARG1);
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1985 break;
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1986 case 8:
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1987 // int64_t
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1988 __ ld(R4_ARG2, 0, R3_ARG1);
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1989 break;
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1990 default:
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1991 ShouldNotReachHere();
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1992 }
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1993
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1994 // return errValue or *adr
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1995 *continuation_pc = __ pc();
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1996 __ mr(R3_RET, R4_ARG2);
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1997 __ blr();
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1998 }
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1999
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2000 // Initialization
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2001 void generate_initial() {
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2002 // Generates all stubs and initializes the entry points
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2003
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2004 // Entry points that exist in all platforms.
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2005 // Note: This is code that could be shared among different platforms - however the
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2006 // benefit seems to be smaller than the disadvantage of having a
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2007 // much more complicated generator structure. See also comment in
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2008 // stubRoutines.hpp.
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2009
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2010 StubRoutines::_forward_exception_entry = generate_forward_exception();
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2011 StubRoutines::_call_stub_entry = generate_call_stub(StubRoutines::_call_stub_return_address);
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2012 StubRoutines::_catch_exception_entry = generate_catch_exception();
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2013 }
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2014
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2015 void generate_all() {
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2016 // Generates all stubs and initializes the entry points
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2017
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2018 // These entry points require SharedInfo::stack0 to be set up in
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2019 // non-core builds
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2020 StubRoutines::_throw_AbstractMethodError_entry = generate_throw_exception("AbstractMethodError throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_AbstractMethodError), false);
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2021 // Handle IncompatibleClassChangeError in itable stubs.
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2022 StubRoutines::_throw_IncompatibleClassChangeError_entry= generate_throw_exception("IncompatibleClassChangeError throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_IncompatibleClassChangeError), false);
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2023 StubRoutines::_throw_NullPointerException_at_call_entry= generate_throw_exception("NullPointerException at call throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_NullPointerException_at_call), false);
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2024 StubRoutines::_throw_StackOverflowError_entry = generate_throw_exception("StackOverflowError throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_StackOverflowError), false);
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2025
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2026 StubRoutines::_handler_for_unsafe_access_entry = generate_handler_for_unsafe_access();
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2027
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2028 // support for verify_oop (must happen after universe_init)
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2029 StubRoutines::_verify_oop_subroutine_entry = generate_verify_oop();
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2030
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2031 // arraycopy stubs used by compilers
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2032 generate_arraycopy_stubs();
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diff changeset
2033
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2034 // PPC uses stubs for safefetch.
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2035 generate_safefetch("SafeFetch32", sizeof(int), &StubRoutines::_safefetch32_entry,
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2036 &StubRoutines::_safefetch32_fault_pc,
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2037 &StubRoutines::_safefetch32_continuation_pc);
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2038 generate_safefetch("SafeFetchN", sizeof(intptr_t), &StubRoutines::_safefetchN_entry,
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parents:
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2039 &StubRoutines::_safefetchN_fault_pc,
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2040 &StubRoutines::_safefetchN_continuation_pc);
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2041 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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2042
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2043 public:
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2044 StubGenerator(CodeBuffer* code, bool all) : StubCodeGenerator(code) {
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2045 // replace the standard masm with a special one:
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2046 _masm = new MacroAssembler(code);
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2047 if (all) {
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2048 generate_all();
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2049 } else {
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2050 generate_initial();
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2051 }
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2052 }
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2053 };
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2054
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2055 void StubGenerator_generate(CodeBuffer* code, bool all) {
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2056 StubGenerator g(code, all);
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2057 }