Mercurial > hg > truffle
annotate src/cpu/ppc/vm/methodHandles_ppc.cpp @ 19078:5447a27a6fd7
Make StackUsePosList and StackInterval final.
author | Josef Eisl <josef.eisl@jku.at> |
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date | Fri, 30 Jan 2015 15:39:59 +0100 |
parents | 71a71b0bc844 |
children | 327e7269f90d |
rev | line source |
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1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
17807 | 3 * Copyright 2012, 2014 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/macroAssembler.inline.hpp" |
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28 #include "interpreter/interpreter.hpp" |
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29 #include "memory/allocation.inline.hpp" |
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30 #include "prims/methodHandles.hpp" |
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31 |
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32 #define __ _masm-> |
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33 |
14445 | 34 #ifdef CC_INTERP |
35 #define EXCEPTION_ENTRY StubRoutines::throw_NullPointerException_at_call_entry() | |
36 #else | |
37 #define EXCEPTION_ENTRY Interpreter::throw_NullPointerException_entry() | |
38 #endif | |
39 | |
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40 #ifdef PRODUCT |
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41 #define BLOCK_COMMENT(str) // nothing |
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42 #else |
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43 #define BLOCK_COMMENT(str) __ block_comment(str) |
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44 #endif |
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45 |
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46 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":") |
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47 |
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48 // Workaround for C++ overloading nastiness on '0' for RegisterOrConstant. |
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49 inline static RegisterOrConstant constant(int value) { |
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50 return RegisterOrConstant(value); |
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51 } |
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52 |
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53 void MethodHandles::load_klass_from_Class(MacroAssembler* _masm, Register klass_reg, Register temp_reg, Register temp2_reg) { |
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54 if (VerifyMethodHandles) |
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55 verify_klass(_masm, klass_reg, SystemDictionary::WK_KLASS_ENUM_NAME(java_lang_Class), temp_reg, temp2_reg, |
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56 "MH argument is a Class"); |
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57 __ ld(klass_reg, java_lang_Class::klass_offset_in_bytes(), klass_reg); |
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58 } |
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59 |
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60 #ifdef ASSERT |
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61 static int check_nonzero(const char* xname, int x) { |
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62 assert(x != 0, err_msg("%s should be nonzero", xname)); |
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63 return x; |
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64 } |
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65 #define NONZERO(x) check_nonzero(#x, x) |
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66 #else //ASSERT |
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67 #define NONZERO(x) (x) |
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68 #endif //ASSERT |
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69 |
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70 #ifdef ASSERT |
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71 void MethodHandles::verify_klass(MacroAssembler* _masm, |
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72 Register obj_reg, SystemDictionary::WKID klass_id, |
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73 Register temp_reg, Register temp2_reg, |
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74 const char* error_message) { |
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75 Klass** klass_addr = SystemDictionary::well_known_klass_addr(klass_id); |
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76 KlassHandle klass = SystemDictionary::well_known_klass(klass_id); |
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77 Label L_ok, L_bad; |
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78 BLOCK_COMMENT("verify_klass {"); |
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79 __ verify_oop(obj_reg); |
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80 __ cmpdi(CCR0, obj_reg, 0); |
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81 __ beq(CCR0, L_bad); |
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82 __ load_klass(temp_reg, obj_reg); |
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83 __ load_const_optimized(temp2_reg, (address) klass_addr); |
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84 __ ld(temp2_reg, 0, temp2_reg); |
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85 __ cmpd(CCR0, temp_reg, temp2_reg); |
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86 __ beq(CCR0, L_ok); |
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87 __ ld(temp_reg, klass->super_check_offset(), temp_reg); |
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88 __ cmpd(CCR0, temp_reg, temp2_reg); |
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89 __ beq(CCR0, L_ok); |
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90 __ BIND(L_bad); |
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91 __ stop(error_message); |
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92 __ BIND(L_ok); |
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93 BLOCK_COMMENT("} verify_klass"); |
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94 } |
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95 |
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96 void MethodHandles::verify_ref_kind(MacroAssembler* _masm, int ref_kind, Register member_reg, Register temp) { |
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97 Label L; |
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98 BLOCK_COMMENT("verify_ref_kind {"); |
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99 __ load_sized_value(temp, NONZERO(java_lang_invoke_MemberName::flags_offset_in_bytes()), member_reg, |
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100 sizeof(u4), /*is_signed*/ false); |
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101 // assert(sizeof(u4) == sizeof(java.lang.invoke.MemberName.flags), ""); |
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102 __ srwi( temp, temp, java_lang_invoke_MemberName::MN_REFERENCE_KIND_SHIFT); |
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103 __ andi(temp, temp, java_lang_invoke_MemberName::MN_REFERENCE_KIND_MASK); |
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104 __ cmpwi(CCR1, temp, ref_kind); |
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105 __ beq(CCR1, L); |
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106 { char* buf = NEW_C_HEAP_ARRAY(char, 100, mtInternal); |
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107 jio_snprintf(buf, 100, "verify_ref_kind expected %x", ref_kind); |
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108 if (ref_kind == JVM_REF_invokeVirtual || |
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109 ref_kind == JVM_REF_invokeSpecial) |
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110 // could do this for all ref_kinds, but would explode assembly code size |
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111 trace_method_handle(_masm, buf); |
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112 __ stop(buf); |
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113 } |
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114 BLOCK_COMMENT("} verify_ref_kind"); |
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115 __ BIND(L); |
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116 } |
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117 |
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118 #endif // ASSERT |
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119 |
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120 void MethodHandles::jump_from_method_handle(MacroAssembler* _masm, Register method, Register target, Register temp, |
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121 bool for_compiler_entry) { |
17807 | 122 Label L_no_such_method; |
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123 assert(method == R19_method, "interpreter calling convention"); |
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124 assert_different_registers(method, target, temp); |
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125 |
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126 if (!for_compiler_entry && JvmtiExport::can_post_interpreter_events()) { |
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127 Label run_compiled_code; |
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128 // JVMTI events, such as single-stepping, are implemented partly by avoiding running |
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129 // compiled code in threads for which the event is enabled. Check here for |
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130 // interp_only_mode if these events CAN be enabled. |
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131 __ verify_thread(); |
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132 __ lwz(temp, in_bytes(JavaThread::interp_only_mode_offset()), R16_thread); |
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133 __ cmplwi(CCR0, temp, 0); |
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134 __ beq(CCR0, run_compiled_code); |
17807 | 135 // Null method test is replicated below in compiled case, |
136 // it might be able to address across the verify_thread() | |
137 __ cmplwi(CCR0, R19_method, 0); | |
138 __ beq(CCR0, L_no_such_method); | |
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139 __ ld(target, in_bytes(Method::interpreter_entry_offset()), R19_method); |
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140 __ mtctr(target); |
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141 __ bctr(); |
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142 __ BIND(run_compiled_code); |
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143 } |
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144 |
17807 | 145 // Compiled case, either static or fall-through from runtime conditional |
146 __ cmplwi(CCR0, R19_method, 0); | |
147 __ beq(CCR0, L_no_such_method); | |
148 | |
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149 const ByteSize entry_offset = for_compiler_entry ? Method::from_compiled_offset() : |
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150 Method::from_interpreted_offset(); |
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151 __ ld(target, in_bytes(entry_offset), R19_method); |
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152 __ mtctr(target); |
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153 __ bctr(); |
17807 | 154 |
155 __ bind(L_no_such_method); | |
156 assert(StubRoutines::throw_AbstractMethodError_entry() != NULL, "not yet generated!"); | |
157 __ load_const_optimized(target, StubRoutines::throw_AbstractMethodError_entry()); | |
158 __ mtctr(target); | |
159 __ bctr(); | |
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160 } |
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161 |
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162 |
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163 void MethodHandles::jump_to_lambda_form(MacroAssembler* _masm, |
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164 Register recv, Register method_temp, |
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165 Register temp2, Register temp3, |
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166 bool for_compiler_entry) { |
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167 BLOCK_COMMENT("jump_to_lambda_form {"); |
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168 // This is the initial entry point of a lazy method handle. |
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169 // After type checking, it picks up the invoker from the LambdaForm. |
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170 assert_different_registers(recv, method_temp, temp2); // temp3 is only passed on |
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171 assert(method_temp == R19_method, "required register for loading method"); |
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172 |
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173 // Load the invoker, as MH -> MH.form -> LF.vmentry |
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174 __ verify_oop(recv); |
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175 __ load_heap_oop_not_null(method_temp, NONZERO(java_lang_invoke_MethodHandle::form_offset_in_bytes()), recv); |
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176 __ verify_oop(method_temp); |
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177 __ load_heap_oop_not_null(method_temp, NONZERO(java_lang_invoke_LambdaForm::vmentry_offset_in_bytes()), method_temp); |
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178 __ verify_oop(method_temp); |
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179 // the following assumes that a Method* is normally compressed in the vmtarget field: |
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180 __ ld(method_temp, NONZERO(java_lang_invoke_MemberName::vmtarget_offset_in_bytes()), method_temp); |
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181 |
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182 if (VerifyMethodHandles && !for_compiler_entry) { |
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183 // make sure recv is already on stack |
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184 __ ld(temp2, in_bytes(Method::const_offset()), method_temp); |
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185 __ load_sized_value(temp2, in_bytes(ConstMethod::size_of_parameters_offset()), temp2, |
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186 sizeof(u2), /*is_signed*/ false); |
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187 // assert(sizeof(u2) == sizeof(ConstMethod::_size_of_parameters), ""); |
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188 Label L; |
14445 | 189 __ ld(temp2, __ argument_offset(temp2, temp2, 0), CC_INTERP_ONLY(R17_tos) NOT_CC_INTERP(R15_esp)); |
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190 __ cmpd(CCR1, temp2, recv); |
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191 __ beq(CCR1, L); |
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192 __ stop("receiver not on stack"); |
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193 __ BIND(L); |
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194 } |
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195 |
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196 jump_from_method_handle(_masm, method_temp, temp2, temp3, for_compiler_entry); |
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197 BLOCK_COMMENT("} jump_to_lambda_form"); |
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198 } |
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199 |
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200 |
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201 |
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202 // Code generation |
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203 address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm, |
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204 vmIntrinsics::ID iid) { |
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205 const bool not_for_compiler_entry = false; // this is the interpreter entry |
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206 assert(is_signature_polymorphic(iid), "expected invoke iid"); |
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207 if (iid == vmIntrinsics::_invokeGeneric || |
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208 iid == vmIntrinsics::_compiledLambdaForm) { |
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209 // Perhaps surprisingly, the symbolic references visible to Java are not directly used. |
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210 // They are linked to Java-generated adapters via MethodHandleNatives.linkMethod. |
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211 // They all allow an appendix argument. |
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212 __ stop("Should not reach here"); // empty stubs make SG sick |
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213 return NULL; |
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214 } |
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215 |
14445 | 216 Register argbase = CC_INTERP_ONLY(R17_tos) NOT_CC_INTERP(R15_esp); // parameter (preserved) |
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217 Register argslot = R3; |
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218 Register temp1 = R6; |
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219 Register param_size = R7; |
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220 |
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221 // here's where control starts out: |
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222 __ align(CodeEntryAlignment); |
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223 address entry_point = __ pc(); |
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224 |
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225 if (VerifyMethodHandles) { |
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226 Label L; |
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227 BLOCK_COMMENT("verify_intrinsic_id {"); |
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228 __ load_sized_value(temp1, Method::intrinsic_id_offset_in_bytes(), R19_method, |
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229 sizeof(u1), /*is_signed*/ false); |
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230 // assert(sizeof(u1) == sizeof(Method::_intrinsic_id), ""); |
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231 __ cmpwi(CCR1, temp1, (int) iid); |
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232 __ beq(CCR1, L); |
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233 if (iid == vmIntrinsics::_linkToVirtual || |
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234 iid == vmIntrinsics::_linkToSpecial) { |
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235 // could do this for all kinds, but would explode assembly code size |
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236 trace_method_handle(_masm, "bad Method*:intrinsic_id"); |
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237 } |
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238 __ stop("bad Method*::intrinsic_id"); |
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239 __ BIND(L); |
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240 BLOCK_COMMENT("} verify_intrinsic_id"); |
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241 } |
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242 |
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243 // First task: Find out how big the argument list is. |
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244 int ref_kind = signature_polymorphic_intrinsic_ref_kind(iid); |
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245 assert(ref_kind != 0 || iid == vmIntrinsics::_invokeBasic, "must be _invokeBasic or a linkTo intrinsic"); |
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246 if (ref_kind == 0 || MethodHandles::ref_kind_has_receiver(ref_kind)) { |
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247 __ ld(param_size, in_bytes(Method::const_offset()), R19_method); |
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248 __ load_sized_value(param_size, in_bytes(ConstMethod::size_of_parameters_offset()), param_size, |
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249 sizeof(u2), /*is_signed*/ false); |
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250 // assert(sizeof(u2) == sizeof(ConstMethod::_size_of_parameters), ""); |
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251 } else { |
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252 DEBUG_ONLY(param_size = noreg); |
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253 } |
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254 |
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255 Register tmp_mh = noreg; |
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256 if (!is_signature_polymorphic_static(iid)) { |
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257 __ ld(tmp_mh = temp1, __ argument_offset(param_size, param_size, 0), argbase); |
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258 DEBUG_ONLY(param_size = noreg); |
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259 } |
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260 |
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261 if (TraceMethodHandles) { |
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262 if (tmp_mh != noreg) |
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263 __ mr(R23_method_handle, tmp_mh); // make stub happy |
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264 trace_method_handle_interpreter_entry(_masm, iid); |
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265 } |
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266 |
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267 if (iid == vmIntrinsics::_invokeBasic) { |
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268 generate_method_handle_dispatch(_masm, iid, tmp_mh, noreg, not_for_compiler_entry); |
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269 |
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270 } else { |
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271 // Adjust argument list by popping the trailing MemberName argument. |
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272 Register tmp_recv = noreg; |
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273 if (MethodHandles::ref_kind_has_receiver(ref_kind)) { |
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274 // Load the receiver (not the MH; the actual MemberName's receiver) up from the interpreter stack. |
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275 __ ld(tmp_recv = temp1, __ argument_offset(param_size, param_size, 0), argbase); |
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276 DEBUG_ONLY(param_size = noreg); |
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277 } |
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278 Register R19_member = R19_method; // MemberName ptr; incoming method ptr is dead now |
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279 __ ld(R19_member, RegisterOrConstant((intptr_t)8), argbase); |
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280 __ add(argbase, Interpreter::stackElementSize, argbase); |
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281 generate_method_handle_dispatch(_masm, iid, tmp_recv, R19_member, not_for_compiler_entry); |
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282 } |
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283 |
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284 return entry_point; |
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285 } |
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286 |
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287 void MethodHandles::generate_method_handle_dispatch(MacroAssembler* _masm, |
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288 vmIntrinsics::ID iid, |
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289 Register receiver_reg, |
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290 Register member_reg, |
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291 bool for_compiler_entry) { |
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292 assert(is_signature_polymorphic(iid), "expected invoke iid"); |
14445 | 293 Register temp1 = (for_compiler_entry ? R25_tmp5 : R7); |
14408
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294 Register temp2 = (for_compiler_entry ? R22_tmp2 : R8); |
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295 Register temp3 = (for_compiler_entry ? R23_tmp3 : R9); |
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296 Register temp4 = (for_compiler_entry ? R24_tmp4 : R10); |
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297 if (receiver_reg != noreg) assert_different_registers(temp1, temp2, temp3, temp4, receiver_reg); |
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298 if (member_reg != noreg) assert_different_registers(temp1, temp2, temp3, temp4, member_reg); |
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299 |
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300 if (iid == vmIntrinsics::_invokeBasic) { |
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301 // indirect through MH.form.vmentry.vmtarget |
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302 jump_to_lambda_form(_masm, receiver_reg, R19_method, temp1, temp2, for_compiler_entry); |
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303 } else { |
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304 // The method is a member invoker used by direct method handles. |
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305 if (VerifyMethodHandles) { |
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306 // make sure the trailing argument really is a MemberName (caller responsibility) |
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307 verify_klass(_masm, member_reg, SystemDictionary::WK_KLASS_ENUM_NAME(MemberName_klass), |
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308 temp1, temp2, |
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309 "MemberName required for invokeVirtual etc."); |
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310 } |
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311 |
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312 Register temp1_recv_klass = temp1; |
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313 if (iid != vmIntrinsics::_linkToStatic) { |
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314 __ verify_oop(receiver_reg); |
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315 if (iid == vmIntrinsics::_linkToSpecial) { |
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316 // Don't actually load the klass; just null-check the receiver. |
14445 | 317 __ null_check_throw(receiver_reg, -1, temp1, EXCEPTION_ENTRY); |
14408
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318 } else { |
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319 // load receiver klass itself |
14445 | 320 __ null_check_throw(receiver_reg, oopDesc::klass_offset_in_bytes(), temp1, EXCEPTION_ENTRY); |
14408
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321 __ load_klass(temp1_recv_klass, receiver_reg); |
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322 __ verify_klass_ptr(temp1_recv_klass); |
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323 } |
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324 BLOCK_COMMENT("check_receiver {"); |
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325 // The receiver for the MemberName must be in receiver_reg. |
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326 // Check the receiver against the MemberName.clazz |
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327 if (VerifyMethodHandles && iid == vmIntrinsics::_linkToSpecial) { |
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328 // Did not load it above... |
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329 __ load_klass(temp1_recv_klass, receiver_reg); |
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330 __ verify_klass_ptr(temp1_recv_klass); |
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331 } |
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332 if (VerifyMethodHandles && iid != vmIntrinsics::_linkToInterface) { |
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333 Label L_ok; |
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334 Register temp2_defc = temp2; |
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335 __ load_heap_oop_not_null(temp2_defc, NONZERO(java_lang_invoke_MemberName::clazz_offset_in_bytes()), member_reg); |
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336 load_klass_from_Class(_masm, temp2_defc, temp3, temp4); |
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337 __ verify_klass_ptr(temp2_defc); |
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338 __ check_klass_subtype(temp1_recv_klass, temp2_defc, temp3, temp4, L_ok); |
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339 // If we get here, the type check failed! |
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340 __ stop("receiver class disagrees with MemberName.clazz"); |
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341 __ BIND(L_ok); |
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342 } |
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343 BLOCK_COMMENT("} check_receiver"); |
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344 } |
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345 if (iid == vmIntrinsics::_linkToSpecial || |
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346 iid == vmIntrinsics::_linkToStatic) { |
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347 DEBUG_ONLY(temp1_recv_klass = noreg); // these guys didn't load the recv_klass |
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348 } |
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349 |
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350 // Live registers at this point: |
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351 // member_reg - MemberName that was the trailing argument |
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352 // temp1_recv_klass - klass of stacked receiver, if needed |
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353 // O5_savedSP - interpreter linkage (if interpreted) |
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354 // O0..O5 - compiler arguments (if compiled) |
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355 |
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356 Label L_incompatible_class_change_error; |
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357 switch (iid) { |
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358 case vmIntrinsics::_linkToSpecial: |
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359 if (VerifyMethodHandles) { |
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360 verify_ref_kind(_masm, JVM_REF_invokeSpecial, member_reg, temp2); |
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361 } |
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362 __ ld(R19_method, NONZERO(java_lang_invoke_MemberName::vmtarget_offset_in_bytes()), member_reg); |
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363 break; |
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|
364 |
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365 case vmIntrinsics::_linkToStatic: |
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366 if (VerifyMethodHandles) { |
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367 verify_ref_kind(_masm, JVM_REF_invokeStatic, member_reg, temp2); |
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368 } |
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369 __ ld(R19_method, NONZERO(java_lang_invoke_MemberName::vmtarget_offset_in_bytes()), member_reg); |
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370 break; |
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|
371 |
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372 case vmIntrinsics::_linkToVirtual: |
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373 { |
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374 // same as TemplateTable::invokevirtual, |
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375 // minus the CP setup and profiling: |
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|
376 |
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377 if (VerifyMethodHandles) { |
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378 verify_ref_kind(_masm, JVM_REF_invokeVirtual, member_reg, temp2); |
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379 } |
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|
380 |
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381 // pick out the vtable index from the MemberName, and then we can discard it: |
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382 Register temp2_index = temp2; |
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383 __ ld(temp2_index, NONZERO(java_lang_invoke_MemberName::vmindex_offset_in_bytes()), member_reg); |
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|
384 |
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385 if (VerifyMethodHandles) { |
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386 Label L_index_ok; |
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387 __ cmpdi(CCR1, temp2_index, 0); |
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388 __ bge(CCR1, L_index_ok); |
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389 __ stop("no virtual index"); |
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390 __ BIND(L_index_ok); |
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|
391 } |
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|
392 |
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393 // Note: The verifier invariants allow us to ignore MemberName.clazz and vmtarget |
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394 // at this point. And VerifyMethodHandles has already checked clazz, if needed. |
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|
395 |
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396 // get target Method* & entry point |
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397 __ lookup_virtual_method(temp1_recv_klass, temp2_index, R19_method); |
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398 break; |
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|
399 } |
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|
400 |
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|
401 case vmIntrinsics::_linkToInterface: |
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|
402 { |
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|
403 // same as TemplateTable::invokeinterface |
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|
404 // (minus the CP setup and profiling, with different argument motion) |
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405 if (VerifyMethodHandles) { |
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406 verify_ref_kind(_masm, JVM_REF_invokeInterface, member_reg, temp2); |
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407 } |
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|
408 |
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|
409 Register temp2_intf = temp2; |
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410 __ load_heap_oop_not_null(temp2_intf, NONZERO(java_lang_invoke_MemberName::clazz_offset_in_bytes()), member_reg); |
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411 load_klass_from_Class(_masm, temp2_intf, temp3, temp4); |
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412 __ verify_klass_ptr(temp2_intf); |
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|
413 |
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414 Register vtable_index = R19_method; |
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|
415 __ ld(vtable_index, NONZERO(java_lang_invoke_MemberName::vmindex_offset_in_bytes()), member_reg); |
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416 if (VerifyMethodHandles) { |
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417 Label L_index_ok; |
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418 __ cmpdi(CCR1, vtable_index, 0); |
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419 __ bge(CCR1, L_index_ok); |
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420 __ stop("invalid vtable index for MH.invokeInterface"); |
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421 __ BIND(L_index_ok); |
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|
422 } |
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|
423 |
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424 // given intf, index, and recv klass, dispatch to the implementation method |
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425 __ lookup_interface_method(temp1_recv_klass, temp2_intf, |
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426 // note: next two args must be the same: |
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|
427 vtable_index, R19_method, |
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428 temp3, temp4, |
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|
429 L_incompatible_class_change_error); |
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|
430 break; |
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|
431 } |
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|
432 |
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433 default: |
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434 fatal(err_msg_res("unexpected intrinsic %d: %s", iid, vmIntrinsics::name_at(iid))); |
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435 break; |
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parents:
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|
436 } |
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|
437 |
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438 // Live at this point: |
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439 // R19_method |
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|
440 // O5_savedSP (if interpreted) |
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|
441 |
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442 // After figuring out which concrete method to call, jump into it. |
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443 // Note that this works in the interpreter with no data motion. |
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444 // But the compiled version will require that rcx_recv be shifted out. |
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445 __ verify_method_ptr(R19_method); |
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|
446 jump_from_method_handle(_masm, R19_method, temp1, temp2, for_compiler_entry); |
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|
447 |
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448 if (iid == vmIntrinsics::_linkToInterface) { |
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449 __ BIND(L_incompatible_class_change_error); |
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450 __ load_const_optimized(temp1, StubRoutines::throw_IncompatibleClassChangeError_entry()); |
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451 __ mtctr(temp1); |
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parents:
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|
452 __ bctr(); |
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|
453 } |
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parents:
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|
454 } |
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parents:
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|
455 } |
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|
456 |
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|
457 #ifndef PRODUCT |
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458 void trace_method_handle_stub(const char* adaptername, |
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|
459 oopDesc* mh, |
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|
460 intptr_t* entry_sp, |
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|
461 intptr_t* saved_regs) { |
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|
462 |
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|
463 bool has_mh = (strstr(adaptername, "/static") == NULL && |
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464 strstr(adaptername, "linkTo") == NULL); // static linkers don't have MH |
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465 const char* mh_reg_name = has_mh ? "R23_method_handle" : "G23"; |
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466 tty->print_cr("MH %s %s="INTPTR_FORMAT " sp=" INTPTR_FORMAT, |
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467 adaptername, mh_reg_name, (intptr_t) mh, entry_sp); |
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|
468 |
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|
469 if (Verbose) { |
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|
470 tty->print_cr("Registers:"); |
17803 | 471 const int abi_offset = frame::abi_reg_args_size / 8; |
14445 | 472 for (int i = R3->encoding(); i <= R12->encoding(); i++) { |
14408
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473 Register r = as_Register(i); |
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|
474 int count = i - R3->encoding(); |
17803 | 475 // The registers are stored in reverse order on the stack (by save_volatile_gprs(R1_SP, abi_reg_args_size)). |
14408
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476 tty->print("%3s=" PTR_FORMAT, r->name(), saved_regs[abi_offset + count]); |
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|
477 if ((count + 1) % 4 == 0) { |
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parents:
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|
478 tty->cr(); |
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|
479 } else { |
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|
480 tty->print(", "); |
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parents:
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|
481 } |
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parents:
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|
482 } |
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parents:
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|
483 tty->cr(); |
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parents:
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|
484 |
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parents:
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|
485 { |
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parents:
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|
486 // dumping last frame with frame::describe |
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parents:
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|
487 |
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parents:
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|
488 JavaThread* p = JavaThread::active(); |
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parents:
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|
489 |
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parents:
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|
490 ResourceMark rm; |
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parents:
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|
491 PRESERVE_EXCEPTION_MARK; // may not be needed by safer and unexpensive here |
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parents:
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|
492 FrameValues values; |
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parents:
diff
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|
493 |
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parents:
diff
changeset
|
494 // Note: We want to allow trace_method_handle from any call site. |
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|
495 // While trace_method_handle creates a frame, it may be entered |
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|
496 // without a PC on the stack top (e.g. not just after a call). |
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|
497 // Walking that frame could lead to failures due to that invalid PC. |
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parents:
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|
498 // => carefully detect that frame when doing the stack walking |
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parents:
diff
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|
499 |
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parents:
diff
changeset
|
500 // Current C frame |
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parents:
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|
501 frame cur_frame = os::current_frame(); |
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parents:
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|
502 |
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parents:
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changeset
|
503 // Robust search of trace_calling_frame (independant of inlining). |
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parents:
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|
504 // Assumes saved_regs comes from a pusha in the trace_calling_frame. |
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|
505 assert(cur_frame.sp() < saved_regs, "registers not saved on stack ?"); |
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|
506 frame trace_calling_frame = os::get_sender_for_C_frame(&cur_frame); |
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|
507 while (trace_calling_frame.fp() < saved_regs) { |
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|
508 trace_calling_frame = os::get_sender_for_C_frame(&trace_calling_frame); |
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parents:
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|
509 } |
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parents:
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|
510 |
14445 | 511 // Safely create a frame and call frame::describe. |
14408
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parents:
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|
512 intptr_t *dump_sp = trace_calling_frame.sender_sp(); |
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parents:
diff
changeset
|
513 |
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parents:
diff
changeset
|
514 frame dump_frame = frame(dump_sp); |
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parents:
diff
changeset
|
515 dump_frame.describe(values, 1); |
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parents:
diff
changeset
|
516 |
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parents:
diff
changeset
|
517 values.describe(-1, saved_regs, "raw top of stack"); |
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parents:
diff
changeset
|
518 |
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parents:
diff
changeset
|
519 tty->print_cr("Stack layout:"); |
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parents:
diff
changeset
|
520 values.print(p); |
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parents:
diff
changeset
|
521 } |
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parents:
diff
changeset
|
522 |
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parents:
diff
changeset
|
523 if (has_mh && mh->is_oop()) { |
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parents:
diff
changeset
|
524 mh->print(); |
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parents:
diff
changeset
|
525 if (java_lang_invoke_MethodHandle::is_instance(mh)) { |
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parents:
diff
changeset
|
526 if (java_lang_invoke_MethodHandle::form_offset_in_bytes() != 0) |
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parents:
diff
changeset
|
527 java_lang_invoke_MethodHandle::form(mh)->print(); |
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parents:
diff
changeset
|
528 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
529 } |
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parents:
diff
changeset
|
530 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
531 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
532 |
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parents:
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|
533 void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) { |
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parents:
diff
changeset
|
534 if (!TraceMethodHandles) return; |
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parents:
diff
changeset
|
535 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
536 BLOCK_COMMENT("trace_method_handle {"); |
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parents:
diff
changeset
|
537 |
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parents:
diff
changeset
|
538 int nbytes_save = 10 * 8; // 10 volatile gprs |
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parents:
diff
changeset
|
539 __ save_LR_CR(R0); |
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parents:
diff
changeset
|
540 __ mr(R0, R1_SP); // saved_sp |
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parents:
diff
changeset
|
541 assert(Assembler::is_simm(-nbytes_save, 16), "Overwriting R0"); |
17803 | 542 // Push_frame_reg_args only uses R0 if nbytes_save is wider than 16 bit. |
543 __ push_frame_reg_args(nbytes_save, R0); | |
544 __ save_volatile_gprs(R1_SP, frame::abi_reg_args_size); // Except R0. | |
14408
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545 |
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546 __ load_const(R3_ARG1, (address)adaptername); |
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547 __ mr(R4_ARG2, R23_method_handle); |
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548 __ mr(R5_ARG3, R0); // saved_sp |
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549 __ mr(R6_ARG4, R1_SP); |
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550 __ call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub)); |
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551 |
14445 | 552 __ restore_volatile_gprs(R1_SP, 112); // Except R0. |
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553 __ pop_frame(); |
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554 __ restore_LR_CR(R0); |
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555 |
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556 BLOCK_COMMENT("} trace_method_handle"); |
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557 } |
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558 #endif // PRODUCT |