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annotate src/cpu/ppc/vm/macroAssembler_ppc.hpp @ 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 eb178e97560c
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14408
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1 /*
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2 * Copyright (c) 2002, 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 #ifndef CPU_PPC_VM_MACROASSEMBLER_PPC_HPP
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27 #define CPU_PPC_VM_MACROASSEMBLER_PPC_HPP
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28
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29 #include "asm/assembler.hpp"
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30
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31 // MacroAssembler extends Assembler by a few frequently used macros.
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32
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33 class ciTypeArray;
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34
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35 class MacroAssembler: public Assembler {
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36 public:
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37 MacroAssembler(CodeBuffer* code) : Assembler(code) {}
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38
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39 //
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40 // Optimized instruction emitters
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41 //
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42
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43 inline static int largeoffset_si16_si16_hi(int si31) { return (si31 + (1<<15)) >> 16; }
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44 inline static int largeoffset_si16_si16_lo(int si31) { return si31 - (((si31 + (1<<15)) >> 16) << 16); }
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45
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46 // load d = *[a+si31]
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47 // Emits several instructions if the offset is not encodable in one instruction.
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48 void ld_largeoffset_unchecked(Register d, int si31, Register a, int emit_filler_nop);
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49 void ld_largeoffset (Register d, int si31, Register a, int emit_filler_nop);
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50 inline static bool is_ld_largeoffset(address a);
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51 inline static int get_ld_largeoffset_offset(address a);
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52
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53 inline void round_to(Register r, int modulus);
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54
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55 // Load/store with type given by parameter.
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56 void load_sized_value( Register dst, RegisterOrConstant offs, Register base, size_t size_in_bytes, bool is_signed);
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57 void store_sized_value(Register dst, RegisterOrConstant offs, Register base, size_t size_in_bytes);
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58
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59 // Move register if destination register and target register are different
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60 inline void mr_if_needed(Register rd, Register rs);
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61
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62 // nop padding
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63 void align(int modulus);
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64
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65 //
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66 // Constants, loading constants, TOC support
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67 //
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68
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69 // Address of the global TOC.
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70 inline static address global_toc();
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71 // Offset of given address to the global TOC.
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72 inline static int offset_to_global_toc(const address addr);
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73
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74 // Address of TOC of the current method.
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75 inline address method_toc();
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76 // Offset of given address to TOC of the current method.
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77 inline int offset_to_method_toc(const address addr);
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78
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79 // Global TOC.
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80 void calculate_address_from_global_toc(Register dst, address addr,
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81 bool hi16 = true, bool lo16 = true,
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82 bool add_relocation = true, bool emit_dummy_addr = false);
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83 inline void calculate_address_from_global_toc_hi16only(Register dst, address addr) {
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84 calculate_address_from_global_toc(dst, addr, true, false);
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85 };
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86 inline void calculate_address_from_global_toc_lo16only(Register dst, address addr) {
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87 calculate_address_from_global_toc(dst, addr, false, true);
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88 };
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89
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90 inline static bool is_calculate_address_from_global_toc_at(address a, address bound);
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91 static int patch_calculate_address_from_global_toc_at(address a, address addr, address bound);
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92 static address get_address_of_calculate_address_from_global_toc_at(address a, address addr);
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93
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94 #ifdef _LP64
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95 // Patch narrow oop constant.
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96 inline static bool is_set_narrow_oop(address a, address bound);
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97 static int patch_set_narrow_oop(address a, address bound, narrowOop data);
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98 static narrowOop get_narrow_oop(address a, address bound);
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99 #endif
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100
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101 inline static bool is_load_const_at(address a);
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102
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103 // Emits an oop const to the constant pool, loads the constant, and
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104 // sets a relocation info with address current_pc.
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105 void load_const_from_method_toc(Register dst, AddressLiteral& a, Register toc);
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106 void load_toc_from_toc(Register dst, AddressLiteral& a, Register toc) {
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107 assert(dst == R2_TOC, "base register must be TOC");
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108 load_const_from_method_toc(dst, a, toc);
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109 }
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110
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111 static bool is_load_const_from_method_toc_at(address a);
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112 static int get_offset_of_load_const_from_method_toc_at(address a);
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113
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114 // Get the 64 bit constant from a `load_const' sequence.
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115 static long get_const(address load_const);
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116
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117 // Patch the 64 bit constant of a `load_const' sequence. This is a
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118 // low level procedure. It neither flushes the instruction cache nor
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119 // is it atomic.
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120 static void patch_const(address load_const, long x);
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121
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122 // Metadata in code that we have to keep track of.
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123 AddressLiteral allocate_metadata_address(Metadata* obj); // allocate_index
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124 AddressLiteral constant_metadata_address(Metadata* obj); // find_index
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125 // Oops used directly in compiled code are stored in the constant pool,
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126 // and loaded from there.
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127 // Allocate new entry for oop in constant pool. Generate relocation.
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128 AddressLiteral allocate_oop_address(jobject obj);
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129 // Find oop obj in constant pool. Return relocation with it's index.
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130 AddressLiteral constant_oop_address(jobject obj);
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131
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132 // Find oop in constant pool and emit instructions to load it.
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133 // Uses constant_oop_address.
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134 inline void set_oop_constant(jobject obj, Register d);
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135 // Same as load_address.
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136 inline void set_oop (AddressLiteral obj_addr, Register d);
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137
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138 // Read runtime constant: Issue load if constant not yet established,
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139 // else use real constant.
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140 virtual RegisterOrConstant delayed_value_impl(intptr_t* delayed_value_addr,
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141 Register tmp,
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142 int offset);
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143
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144 //
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145 // branch, jump
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146 //
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147
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148 inline void pd_patch_instruction(address branch, address target);
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149 NOT_PRODUCT(static void pd_print_patched_instruction(address branch);)
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150
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151 // Conditional far branch for destinations encodable in 24+2 bits.
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152 // Same interface as bc, e.g. no inverse boint-field.
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diff changeset
153 enum {
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154 bc_far_optimize_not = 0,
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diff changeset
155 bc_far_optimize_on_relocate = 1
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156 };
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157 // optimize: flag for telling the conditional far branch to optimize
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158 // itself when relocated.
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159 void bc_far(int boint, int biint, Label& dest, int optimize);
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diff changeset
160 // Relocation of conditional far branches.
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161 static bool is_bc_far_at(address instruction_addr);
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162 static address get_dest_of_bc_far_at(address instruction_addr);
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163 static void set_dest_of_bc_far_at(address instruction_addr, address dest);
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164 private:
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165 static bool inline is_bc_far_variant1_at(address instruction_addr);
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166 static bool inline is_bc_far_variant2_at(address instruction_addr);
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167 static bool inline is_bc_far_variant3_at(address instruction_addr);
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168 public:
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169
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170 // Convenience bc_far versions.
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171 inline void blt_far(ConditionRegister crx, Label& L, int optimize);
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172 inline void bgt_far(ConditionRegister crx, Label& L, int optimize);
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173 inline void beq_far(ConditionRegister crx, Label& L, int optimize);
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174 inline void bso_far(ConditionRegister crx, Label& L, int optimize);
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175 inline void bge_far(ConditionRegister crx, Label& L, int optimize);
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176 inline void ble_far(ConditionRegister crx, Label& L, int optimize);
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177 inline void bne_far(ConditionRegister crx, Label& L, int optimize);
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178 inline void bns_far(ConditionRegister crx, Label& L, int optimize);
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179
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180 // Emit, identify and patch a NOT mt-safe patchable 64 bit absolute call/jump.
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181 private:
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182 enum {
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183 bxx64_patchable_instruction_count = (2/*load_codecache_const*/ + 3/*5load_const*/ + 1/*mtctr*/ + 1/*bctrl*/),
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184 bxx64_patchable_size = bxx64_patchable_instruction_count * BytesPerInstWord,
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185 bxx64_patchable_ret_addr_offset = bxx64_patchable_size
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186 };
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187 void bxx64_patchable(address target, relocInfo::relocType rt, bool link);
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188 static bool is_bxx64_patchable_at( address instruction_addr, bool link);
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189 // Does the instruction use a pc-relative encoding of the destination?
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190 static bool is_bxx64_patchable_pcrelative_at( address instruction_addr, bool link);
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191 static bool is_bxx64_patchable_variant1_at( address instruction_addr, bool link);
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192 // Load destination relative to global toc.
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193 static bool is_bxx64_patchable_variant1b_at( address instruction_addr, bool link);
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194 static bool is_bxx64_patchable_variant2_at( address instruction_addr, bool link);
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195 static void set_dest_of_bxx64_patchable_at( address instruction_addr, address target, bool link);
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196 static address get_dest_of_bxx64_patchable_at(address instruction_addr, bool link);
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197
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198 public:
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199 // call
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200 enum {
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201 bl64_patchable_instruction_count = bxx64_patchable_instruction_count,
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202 bl64_patchable_size = bxx64_patchable_size,
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203 bl64_patchable_ret_addr_offset = bxx64_patchable_ret_addr_offset
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204 };
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205 inline void bl64_patchable(address target, relocInfo::relocType rt) {
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206 bxx64_patchable(target, rt, /*link=*/true);
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207 }
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208 inline static bool is_bl64_patchable_at(address instruction_addr) {
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209 return is_bxx64_patchable_at(instruction_addr, /*link=*/true);
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210 }
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211 inline static bool is_bl64_patchable_pcrelative_at(address instruction_addr) {
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212 return is_bxx64_patchable_pcrelative_at(instruction_addr, /*link=*/true);
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213 }
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214 inline static void set_dest_of_bl64_patchable_at(address instruction_addr, address target) {
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215 set_dest_of_bxx64_patchable_at(instruction_addr, target, /*link=*/true);
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216 }
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217 inline static address get_dest_of_bl64_patchable_at(address instruction_addr) {
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218 return get_dest_of_bxx64_patchable_at(instruction_addr, /*link=*/true);
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219 }
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220 // jump
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221 enum {
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222 b64_patchable_instruction_count = bxx64_patchable_instruction_count,
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223 b64_patchable_size = bxx64_patchable_size,
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224 };
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225 inline void b64_patchable(address target, relocInfo::relocType rt) {
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226 bxx64_patchable(target, rt, /*link=*/false);
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227 }
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228 inline static bool is_b64_patchable_at(address instruction_addr) {
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229 return is_bxx64_patchable_at(instruction_addr, /*link=*/false);
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230 }
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231 inline static bool is_b64_patchable_pcrelative_at(address instruction_addr) {
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232 return is_bxx64_patchable_pcrelative_at(instruction_addr, /*link=*/false);
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233 }
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234 inline static void set_dest_of_b64_patchable_at(address instruction_addr, address target) {
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235 set_dest_of_bxx64_patchable_at(instruction_addr, target, /*link=*/false);
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236 }
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237 inline static address get_dest_of_b64_patchable_at(address instruction_addr) {
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238 return get_dest_of_bxx64_patchable_at(instruction_addr, /*link=*/false);
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239 }
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240
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241 //
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242 // Support for frame handling
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243 //
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244
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245 // some ABI-related functions
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246 void save_nonvolatile_gprs( Register dst_base, int offset);
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247 void restore_nonvolatile_gprs(Register src_base, int offset);
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248 void save_volatile_gprs( Register dst_base, int offset);
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249 void restore_volatile_gprs(Register src_base, int offset);
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250 void save_LR_CR( Register tmp); // tmp contains LR on return.
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251 void restore_LR_CR(Register tmp);
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252
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253 // Get current PC using bl-next-instruction trick.
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254 address get_PC_trash_LR(Register result);
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255
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256 // Resize current frame either relatively wrt to current SP or absolute.
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257 void resize_frame(Register offset, Register tmp);
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258 void resize_frame(int offset, Register tmp);
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259 void resize_frame_absolute(Register addr, Register tmp1, Register tmp2);
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260
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261 // Push a frame of size bytes.
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262 void push_frame(Register bytes, Register tmp);
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263
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264 // Push a frame of size `bytes'. No abi space provided.
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265 void push_frame(unsigned int bytes, Register tmp);
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266
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267 // Push a frame of size `bytes' plus abi112 on top.
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268 void push_frame_abi112(unsigned int bytes, Register tmp);
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269
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270 // Setup up a new C frame with a spill area for non-volatile GPRs and additional
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271 // space for local variables
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272 void push_frame_abi112_nonvolatiles(unsigned int bytes, Register tmp);
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273
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274 // pop current C frame
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275 void pop_frame();
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276
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277 //
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278 // Calls
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279 //
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280
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281 private:
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282 address _last_calls_return_pc;
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283
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284 // Generic version of a call to C function via a function descriptor
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285 // with variable support for C calling conventions (TOC, ENV, etc.).
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286 // updates and returns _last_calls_return_pc.
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287 address branch_to(Register function_descriptor, bool and_link, bool save_toc_before_call,
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288 bool restore_toc_after_call, bool load_toc_of_callee, bool load_env_of_callee);
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289
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290 public:
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291
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292 // Get the pc where the last call will return to. returns _last_calls_return_pc.
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293 inline address last_calls_return_pc();
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294
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295 // Call a C function via a function descriptor and use full C
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296 // calling conventions. Updates and returns _last_calls_return_pc.
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297 address call_c(Register function_descriptor);
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298 address call_c(const FunctionDescriptor* function_descriptor, relocInfo::relocType rt);
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299 address call_c_using_toc(const FunctionDescriptor* function_descriptor, relocInfo::relocType rt,
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goetz
parents:
diff changeset
300 Register toc);
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goetz
parents:
diff changeset
301
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
302 protected:
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parents:
diff changeset
303
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parents:
diff changeset
304 // It is imperative that all calls into the VM are handled via the
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diff changeset
305 // call_VM macros. They make sure that the stack linkage is setup
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parents:
diff changeset
306 // correctly. call_VM's correspond to ENTRY/ENTRY_X entry points
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
307 // while call_VM_leaf's correspond to LEAF entry points.
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parents:
diff changeset
308 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
309 // This is the base routine called by the different versions of
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parents:
diff changeset
310 // call_VM. The interpreter may customize this version by overriding
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parents:
diff changeset
311 // it for its purposes (e.g., to save/restore additional registers
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
312 // when doing a VM call).
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parents:
diff changeset
313 //
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parents:
diff changeset
314 // If no last_java_sp is specified (noreg) then SP will be used instead.
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diff changeset
315 virtual void call_VM_base(
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diff changeset
316 // where an oop-result ends up if any; use noreg otherwise
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diff changeset
317 Register oop_result,
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parents:
diff changeset
318 // to set up last_Java_frame in stubs; use noreg otherwise
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parents:
diff changeset
319 Register last_java_sp,
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parents:
diff changeset
320 // the entry point
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parents:
diff changeset
321 address entry_point,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
322 // flag which indicates if exception should be checked
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parents:
diff changeset
323 bool check_exception=true
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
324 );
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
325
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parents:
diff changeset
326 // Support for VM calls. This is the base routine called by the
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
327 // different versions of call_VM_leaf. The interpreter may customize
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
328 // this version by overriding it for its purposes (e.g., to
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
329 // save/restore additional registers when doing a VM call).
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330 void call_VM_leaf_base(address entry_point);
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parents:
diff changeset
331
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parents:
diff changeset
332 public:
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
333 // Call into the VM.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
334 // Passes the thread pointer (in R3_ARG1) as a prepended argument.
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parents:
diff changeset
335 // Makes sure oop return values are visible to the GC.
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336 void call_VM(Register oop_result, address entry_point, bool check_exceptions = true);
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337 void call_VM(Register oop_result, address entry_point, Register arg_1, bool check_exceptions = true);
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338 void call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2, bool check_exceptions = true);
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339 void call_VM_leaf(address entry_point);
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parents:
diff changeset
340 void call_VM_leaf(address entry_point, Register arg_1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
341 void call_VM_leaf(address entry_point, Register arg_1, Register arg_2);
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342 void call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3);
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343
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parents:
diff changeset
344 // Call a stub function via a function descriptor, but don't save
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parents:
diff changeset
345 // TOC before call, don't setup TOC and ENV for call, and don't
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parents:
diff changeset
346 // restore TOC after call. Updates and returns _last_calls_return_pc.
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diff changeset
347 inline address call_stub(Register function_entry);
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diff changeset
348 inline void call_stub_and_return_to(Register function_entry, Register return_pc);
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349
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parents:
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350 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
351 // Java utilities
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
352 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
353
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parents:
diff changeset
354 // Read from the polling page, its address is already in a register.
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355 inline void load_from_polling_page(Register polling_page_address, int offset = 0);
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356 // Check whether instruction is a read access to the polling page
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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357 // which was emitted by load_from_polling_page(..).
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358 static bool is_load_from_polling_page(int instruction, void* ucontext/*may be NULL*/,
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diff changeset
359 address* polling_address_ptr = NULL);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
360
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
361 // Check whether instruction is a write access to the memory
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
362 // serialization page realized by one of the instructions stw, stwu,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
363 // stwx, or stwux.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
364 static bool is_memory_serialization(int instruction, JavaThread* thread, void* ucontext);
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diff changeset
365
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
366 // Support for NULL-checks
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
367 //
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
368 // Generates code that causes a NULL OS exception if the content of reg is NULL.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
369 // If the accessed location is M[reg + offset] and the offset is known, provide the
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
370 // offset. No explicit code generation is needed if the offset is within a certain
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
371 // range (0 <= offset <= page_size).
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
372
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
373 // Stack overflow checking
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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374 void bang_stack_with_offset(int offset);
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375
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
376 // If instruction is a stack bang of the form ld, stdu, or
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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377 // stdux, return the banged address. Otherwise, return 0.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
378 static address get_stack_bang_address(int instruction, void* ucontext);
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diff changeset
379
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
380 // Atomics
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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381 // CmpxchgX sets condition register to cmpX(current, compare).
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diff changeset
382 // (flag == ne) => (dest_current_value != compare_value), (!swapped)
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diff changeset
383 // (flag == eq) => (dest_current_value == compare_value), ( swapped)
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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384 static inline bool cmpxchgx_hint_acquire_lock() { return true; }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
385 // The stxcx will probably not be succeeded by a releasing store.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
386 static inline bool cmpxchgx_hint_release_lock() { return false; }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
387 static inline bool cmpxchgx_hint_atomic_update() { return false; }
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diff changeset
388
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
389 // Cmpxchg semantics
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
390 enum {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
391 MemBarNone = 0,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
392 MemBarRel = 1,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
393 MemBarAcq = 2,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
394 MemBarFenceAfter = 4 // use powers of 2
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
395 };
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
396 void cmpxchgw(ConditionRegister flag,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
397 Register dest_current_value, Register compare_value, Register exchange_value, Register addr_base,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff changeset
398 int semantics, bool cmpxchgx_hint = false,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
399 Register int_flag_success = noreg, bool contention_hint = false);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
400 void cmpxchgd(ConditionRegister flag,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
401 Register dest_current_value, Register compare_value, Register exchange_value, Register addr_base,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
402 int semantics, bool cmpxchgx_hint = false,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
403 Register int_flag_success = noreg, Label* failed = NULL, bool contention_hint = false);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
404
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
405 // interface method calling
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
406 void lookup_interface_method(Register recv_klass,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
407 Register intf_klass,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
408 RegisterOrConstant itable_index,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
409 Register method_result,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
410 Register temp_reg, Register temp2_reg,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
411 Label& no_such_interface);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
412
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
413 // virtual method calling
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
414 void lookup_virtual_method(Register recv_klass,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
415 RegisterOrConstant vtable_index,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
416 Register method_result);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
417
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
418 // Test sub_klass against super_klass, with fast and slow paths.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
419
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
420 // The fast path produces a tri-state answer: yes / no / maybe-slow.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
421 // One of the three labels can be NULL, meaning take the fall-through.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
422 // If super_check_offset is -1, the value is loaded up from super_klass.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
423 // No registers are killed, except temp_reg and temp2_reg.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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424 // If super_check_offset is not -1, temp2_reg is not used and can be noreg.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
425 void check_klass_subtype_fast_path(Register sub_klass,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
426 Register super_klass,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
427 Register temp1_reg,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
428 Register temp2_reg,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
429 Label& L_success,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
430 Label& L_failure);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
431
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
432 // The rest of the type check; must be wired to a corresponding fast path.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
433 // It does not repeat the fast path logic, so don't use it standalone.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
434 // The temp_reg can be noreg, if no temps are available.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff changeset
435 // It can also be sub_klass or super_klass, meaning it's OK to kill that one.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
436 // Updates the sub's secondary super cache as necessary.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
437 void check_klass_subtype_slow_path(Register sub_klass,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
438 Register super_klass,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
439 Register temp1_reg,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
440 Register temp2_reg,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
441 Label* L_success = NULL,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
442 Register result_reg = noreg);
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 // Simplified, combined version, good for typical uses.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
445 // Falls through on failure.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
446 void check_klass_subtype(Register sub_klass,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
447 Register super_klass,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
448 Register temp1_reg,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
449 Register temp2_reg,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
450 Label& L_success);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
451
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
452 // Method handle support (JSR 292).
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
453 void check_method_handle_type(Register mtype_reg, Register mh_reg, Register temp_reg, Label& wrong_method_type);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
454
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
455 RegisterOrConstant argument_offset(RegisterOrConstant arg_slot, Register temp_reg, int extra_slot_offset = 0);
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 // Biased locking support
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
458 // Upon entry,obj_reg must contain the target object, and mark_reg
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
459 // must contain the target object's header.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
460 // Destroys mark_reg if an attempt is made to bias an anonymously
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
461 // biased lock. In this case a failure will go either to the slow
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
462 // case or fall through with the notEqual condition code set with
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
463 // the expectation that the slow case in the runtime will be called.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
464 // In the fall-through case where the CAS-based lock is done,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
465 // mark_reg is not destroyed.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
466 void biased_locking_enter(ConditionRegister cr_reg, Register obj_reg, Register mark_reg, Register temp_reg,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
467 Register temp2_reg, Label& done, Label* slow_case = NULL);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
468 // Upon entry, the base register of mark_addr must contain the oop.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
469 // Destroys temp_reg.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
470 // If allow_delay_slot_filling is set to true, the next instruction
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
471 // emitted after this one will go in an annulled delay slot if the
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
472 // biased locking exit case failed.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
473 void biased_locking_exit(ConditionRegister cr_reg, Register mark_addr, Register temp_reg, Label& done);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
474
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
475 void compiler_fast_lock_object( ConditionRegister flag, Register oop, Register box, Register tmp1, Register tmp2, Register tmp3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
476 void compiler_fast_unlock_object(ConditionRegister flag, Register oop, Register box, Register tmp1, Register tmp2, Register tmp3);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
477
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
478 // Support for serializing memory accesses between threads
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
479 void serialize_memory(Register thread, Register tmp1, Register tmp2);
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 // GC barrier support.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
482 void card_write_barrier_post(Register Rstore_addr, Register Rnew_val, Register Rtmp);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
483 void card_table_write(jbyte* byte_map_base, Register Rtmp, Register Robj);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
484
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
485 #ifndef SERIALGC
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
486 // General G1 pre-barrier generator.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
487 void g1_write_barrier_pre(Register Robj, RegisterOrConstant offset, Register Rpre_val,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
488 Register Rtmp1, Register Rtmp2, bool needs_frame = false);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
489 // General G1 post-barrier generator
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
490 void g1_write_barrier_post(Register Rstore_addr, Register Rnew_val, Register Rtmp1,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
491 Register Rtmp2, Register Rtmp3, Label *filtered_ext = NULL);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
492 #endif // SERIALGC
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
493
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
494 // Support for managing the JavaThread pointer (i.e.; the reference to
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
495 // thread-local information).
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
496
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
497 // Support for last Java frame (but use call_VM instead where possible):
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
498 // access R16_thread->last_Java_sp.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
499 void set_last_Java_frame(Register last_java_sp, Register last_Java_pc);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
500 void reset_last_Java_frame(void);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
501 void set_top_ijava_frame_at_SP_as_last_Java_frame(Register sp, Register tmp1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
502
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
503 // Read vm result from thread: oop_result = R16_thread->result;
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
504 void get_vm_result (Register oop_result);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
505 void get_vm_result_2(Register metadata_result);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
506
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
507 static bool needs_explicit_null_check(intptr_t offset);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
508
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
509 // Trap-instruction-based checks.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
510 // Range checks can be distinguished from zero checks as they check 32 bit,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
511 // zero checks all 64 bits (tw, td).
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
512 inline void trap_null_check(Register a, trap_to_bits cmp = traptoEqual);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
513 static bool is_trap_null_check(int x) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
514 return is_tdi(x, traptoEqual, -1/*any reg*/, 0) ||
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
515 is_tdi(x, traptoGreaterThanUnsigned, -1/*any reg*/, 0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
516 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
517
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
518 inline void trap_zombie_not_entrant();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
519 static bool is_trap_zombie_not_entrant(int x) { return is_tdi(x, traptoUnconditional, 0/*reg 0*/, 1); }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
520
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
521 inline void trap_should_not_reach_here();
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
522 static bool is_trap_should_not_reach_here(int x) { return is_tdi(x, traptoUnconditional, 0/*reg 0*/, 2); }
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 inline void trap_ic_miss_check(Register a, Register b);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
525 static bool is_trap_ic_miss_check(int x) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
526 return is_td(x, traptoGreaterThanUnsigned | traptoLessThanUnsigned, -1/*any reg*/, -1/*any reg*/);
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
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
529 // Implicit or explicit null check, jumps to static address exception_entry.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
530 inline void null_check_throw(Register a, int offset, Register temp_reg, address exception_entry);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
531
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
532 // Check accessed object for null. Use SIGTRAP-based null checks on AIX.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
533 inline void ld_with_trap_null_check(Register d, int si16, Register s1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
534 // Variant for heap OOPs including decompression of compressed OOPs.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
535 inline void load_heap_oop_with_trap_null_check(Register d, RegisterOrConstant offs, Register s1);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
536
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
537 // Load heap oop and decompress. Loaded oop may not be null.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
538 inline void load_heap_oop_not_null(Register d, RegisterOrConstant offs, Register s1 = noreg);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
539
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
540 // Null allowed.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
541 inline void load_heap_oop(Register d, RegisterOrConstant offs, Register s1 = noreg);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
542
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
543 // Encode/decode heap oop. Oop may not be null, else en/decoding goes wrong.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
544 inline void encode_heap_oop_not_null(Register d);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
545 inline void decode_heap_oop_not_null(Register d);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
546
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
547 // Null allowed.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
548 inline void decode_heap_oop(Register d);
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 // Load/Store klass oop from klass field. Compress.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
551 void load_klass(Register dst, Register src);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
552 void load_klass_with_trap_null_check(Register dst, Register src);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
553 void store_klass(Register dst_oop, Register klass, Register tmp = R0);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
554 void decode_klass_not_null(Register dst, Register src = noreg);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
555 void encode_klass_not_null(Register dst, Register src = noreg);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
556
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
557 // Load common heap base into register.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
558 void reinit_heapbase(Register d, Register tmp = noreg);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
559
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
560 // SIGTRAP-based range checks for arrays.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
561 inline void trap_range_check_l(Register a, Register b);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
562 inline void trap_range_check_l(Register a, int si16);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
563 static bool is_trap_range_check_l(int x) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
564 return (is_tw (x, traptoLessThanUnsigned, -1/*any reg*/, -1/*any reg*/) ||
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
565 is_twi(x, traptoLessThanUnsigned, -1/*any reg*/) );
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
566 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
567 inline void trap_range_check_le(Register a, int si16);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
568 static bool is_trap_range_check_le(int x) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
569 return is_twi(x, traptoEqual | traptoLessThanUnsigned, -1/*any reg*/);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
570 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
571 inline void trap_range_check_g(Register a, int si16);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
572 static bool is_trap_range_check_g(int x) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
573 return is_twi(x, traptoGreaterThanUnsigned, -1/*any reg*/);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
574 }
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
575 inline void trap_range_check_ge(Register a, Register b);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
576 inline void trap_range_check_ge(Register a, int si16);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
577 static bool is_trap_range_check_ge(int x) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
578 return (is_tw (x, traptoEqual | traptoGreaterThanUnsigned, -1/*any reg*/, -1/*any reg*/) ||
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
579 is_twi(x, traptoEqual | traptoGreaterThanUnsigned, -1/*any reg*/) );
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 static bool is_trap_range_check(int x) {
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
582 return is_trap_range_check_l(x) || is_trap_range_check_le(x) ||
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
583 is_trap_range_check_g(x) || is_trap_range_check_ge(x);
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
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
586 // Needle of length 1.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
587 void string_indexof_1(Register result, Register haystack, Register haycnt,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
588 Register needle, jchar needleChar,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
589 Register tmp1, Register tmp2);
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
590 // General indexof, eventually with constant needle length.
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
591 void string_indexof(Register result, Register haystack, Register haycnt,
ec28f9c041ff 8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff changeset
592 Register needle, ciTypeArray* needle_values, Register needlecnt, int needlecntval,
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593 Register tmp1, Register tmp2, Register tmp3, Register tmp4);
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594 void string_compare(Register str1_reg, Register str2_reg, Register cnt1_reg, Register cnt2_reg,
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595 Register result_reg, Register tmp_reg);
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596 void char_arrays_equals(Register str1_reg, Register str2_reg, Register cnt_reg, Register result_reg,
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597 Register tmp1_reg, Register tmp2_reg, Register tmp3_reg, Register tmp4_reg,
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598 Register tmp5_reg);
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599 void char_arrays_equalsImm(Register str1_reg, Register str2_reg, int cntval, Register result_reg,
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600 Register tmp1_reg, Register tmp2_reg);
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601
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602 //
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603 // Debugging
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604 //
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605
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606 // assert on cr0
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607 void asm_assert(bool check_equal, const char* msg, int id);
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608 void asm_assert_eq(const char* msg, int id) { asm_assert(true, msg, id); }
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609 void asm_assert_ne(const char* msg, int id) { asm_assert(false, msg, id); }
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610
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611 private:
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612 void asm_assert_mems_zero(bool check_equal, int size, int mem_offset, Register mem_base,
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613 const char* msg, int id);
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614
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615 public:
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616
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617 void asm_assert_mem8_is_zero(int mem_offset, Register mem_base, const char* msg, int id) {
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618 asm_assert_mems_zero(true, 8, mem_offset, mem_base, msg, id);
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619 }
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620 void asm_assert_mem8_isnot_zero(int mem_offset, Register mem_base, const char* msg, int id) {
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621 asm_assert_mems_zero(false, 8, mem_offset, mem_base, msg, id);
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622 }
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623
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624 // Verify R16_thread contents.
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625 void verify_thread();
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626
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627 // Emit code to verify that reg contains a valid oop if +VerifyOops is set.
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628 void verify_oop(Register reg, const char* s = "broken oop");
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629
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630 // TODO: verify method and klass metadata (compare against vptr?)
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631 void _verify_method_ptr(Register reg, const char * msg, const char * file, int line) {}
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632 void _verify_klass_ptr(Register reg, const char * msg, const char * file, int line){}
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633
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634 #define verify_method_ptr(reg) _verify_method_ptr(reg, "broken method " #reg, __FILE__, __LINE__)
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635 #define verify_klass_ptr(reg) _verify_klass_ptr(reg, "broken klass " #reg, __FILE__, __LINE__)
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636
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637 private:
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638
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639 enum {
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640 stop_stop = 0,
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641 stop_untested = 1,
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642 stop_unimplemented = 2,
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643 stop_shouldnotreachhere = 3,
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644 stop_end = 4
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645 };
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646 void stop(int type, const char* msg, int id);
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diff changeset
647
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648 public:
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649 // Prints msg, dumps registers and stops execution.
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650 void stop (const char* msg = "", int id = 0) { stop(stop_stop, msg, id); }
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651 void untested (const char* msg = "", int id = 0) { stop(stop_untested, msg, id); }
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652 void unimplemented(const char* msg = "", int id = 0) { stop(stop_unimplemented, msg, id); }
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653 void should_not_reach_here() { stop(stop_shouldnotreachhere, "", -1); }
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654
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655 void zap_from_to(Register low, int before, Register high, int after, Register val, Register addr) PRODUCT_RETURN;
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656 };
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657
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658 #endif // CPU_PPC_VM_MACROASSEMBLER_PPC_HPP