Mercurial > hg > truffle
annotate src/cpu/ppc/vm/methodHandles_ppc.cpp @ 14822:39daeb102dce
Baseline compiler emitPrologue.
author | Josef Eisl <josef.eisl@jku.at> |
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date | Wed, 19 Mar 2014 17:07:22 +0100 |
parents | 67fa91961822 |
children | e5e8aa897002 |
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. |
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3 * Copyright 2012, 2013 SAP AG. All rights reserved. |
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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5 * |
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6 * This code is free software; you can redistribute it and/or modify it |
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7 * under the terms of the GNU General Public License version 2 only, as |
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8 * published by the Free Software Foundation. |
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9 * |
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10 * This code is distributed in the hope that it will be useful, but WITHOUT |
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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13 * version 2 for more details (a copy is included in the LICENSE file that |
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14 * accompanied this code). |
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15 * |
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16 * You should have received a copy of the GNU General Public License version |
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17 * 2 along with this work; if not, write to the Free Software Foundation, |
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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19 * |
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * or visit www.oracle.com if you need additional information or have any |
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22 * questions. |
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23 * |
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24 */ |
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25 |
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26 #include "precompiled.hpp" |
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27 #include "asm/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) { |
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122 assert(method == R19_method, "interpreter calling convention"); |
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123 assert_different_registers(method, target, temp); |
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124 |
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125 if (!for_compiler_entry && JvmtiExport::can_post_interpreter_events()) { |
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126 Label run_compiled_code; |
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127 // JVMTI events, such as single-stepping, are implemented partly by avoiding running |
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128 // compiled code in threads for which the event is enabled. Check here for |
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129 // interp_only_mode if these events CAN be enabled. |
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130 __ verify_thread(); |
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131 __ lwz(temp, in_bytes(JavaThread::interp_only_mode_offset()), R16_thread); |
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132 __ cmplwi(CCR0, temp, 0); |
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133 __ beq(CCR0, run_compiled_code); |
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134 __ ld(target, in_bytes(Method::interpreter_entry_offset()), R19_method); |
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135 __ mtctr(target); |
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136 __ bctr(); |
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137 __ BIND(run_compiled_code); |
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138 } |
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139 |
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140 const ByteSize entry_offset = for_compiler_entry ? Method::from_compiled_offset() : |
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141 Method::from_interpreted_offset(); |
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142 __ ld(target, in_bytes(entry_offset), R19_method); |
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143 __ mtctr(target); |
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144 __ bctr(); |
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145 } |
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146 |
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147 |
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148 void MethodHandles::jump_to_lambda_form(MacroAssembler* _masm, |
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149 Register recv, Register method_temp, |
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150 Register temp2, Register temp3, |
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151 bool for_compiler_entry) { |
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152 BLOCK_COMMENT("jump_to_lambda_form {"); |
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153 // This is the initial entry point of a lazy method handle. |
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154 // After type checking, it picks up the invoker from the LambdaForm. |
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155 assert_different_registers(recv, method_temp, temp2); // temp3 is only passed on |
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156 assert(method_temp == R19_method, "required register for loading method"); |
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157 |
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158 // Load the invoker, as MH -> MH.form -> LF.vmentry |
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159 __ verify_oop(recv); |
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160 __ load_heap_oop_not_null(method_temp, NONZERO(java_lang_invoke_MethodHandle::form_offset_in_bytes()), recv); |
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161 __ verify_oop(method_temp); |
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162 __ load_heap_oop_not_null(method_temp, NONZERO(java_lang_invoke_LambdaForm::vmentry_offset_in_bytes()), method_temp); |
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163 __ verify_oop(method_temp); |
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164 // the following assumes that a Method* is normally compressed in the vmtarget field: |
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165 __ ld(method_temp, NONZERO(java_lang_invoke_MemberName::vmtarget_offset_in_bytes()), method_temp); |
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166 |
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167 if (VerifyMethodHandles && !for_compiler_entry) { |
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168 // make sure recv is already on stack |
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169 __ ld(temp2, in_bytes(Method::const_offset()), method_temp); |
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170 __ load_sized_value(temp2, in_bytes(ConstMethod::size_of_parameters_offset()), temp2, |
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171 sizeof(u2), /*is_signed*/ false); |
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172 // assert(sizeof(u2) == sizeof(ConstMethod::_size_of_parameters), ""); |
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173 Label L; |
14445 | 174 __ ld(temp2, __ argument_offset(temp2, temp2, 0), CC_INTERP_ONLY(R17_tos) NOT_CC_INTERP(R15_esp)); |
14408
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175 __ cmpd(CCR1, temp2, recv); |
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176 __ beq(CCR1, L); |
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177 __ stop("receiver not on stack"); |
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178 __ BIND(L); |
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179 } |
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180 |
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181 jump_from_method_handle(_masm, method_temp, temp2, temp3, for_compiler_entry); |
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182 BLOCK_COMMENT("} jump_to_lambda_form"); |
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183 } |
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184 |
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185 |
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186 |
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187 // Code generation |
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188 address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm, |
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189 vmIntrinsics::ID iid) { |
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190 const bool not_for_compiler_entry = false; // this is the interpreter entry |
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191 assert(is_signature_polymorphic(iid), "expected invoke iid"); |
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192 if (iid == vmIntrinsics::_invokeGeneric || |
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193 iid == vmIntrinsics::_compiledLambdaForm) { |
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194 // Perhaps surprisingly, the symbolic references visible to Java are not directly used. |
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195 // They are linked to Java-generated adapters via MethodHandleNatives.linkMethod. |
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196 // They all allow an appendix argument. |
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197 __ stop("Should not reach here"); // empty stubs make SG sick |
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198 return NULL; |
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199 } |
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200 |
14445 | 201 Register argbase = CC_INTERP_ONLY(R17_tos) NOT_CC_INTERP(R15_esp); // parameter (preserved) |
14408
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202 Register argslot = R3; |
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203 Register temp1 = R6; |
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204 Register param_size = R7; |
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205 |
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206 // here's where control starts out: |
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207 __ align(CodeEntryAlignment); |
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208 address entry_point = __ pc(); |
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209 |
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210 if (VerifyMethodHandles) { |
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211 Label L; |
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212 BLOCK_COMMENT("verify_intrinsic_id {"); |
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213 __ load_sized_value(temp1, Method::intrinsic_id_offset_in_bytes(), R19_method, |
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214 sizeof(u1), /*is_signed*/ false); |
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215 // assert(sizeof(u1) == sizeof(Method::_intrinsic_id), ""); |
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216 __ cmpwi(CCR1, temp1, (int) iid); |
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217 __ beq(CCR1, L); |
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218 if (iid == vmIntrinsics::_linkToVirtual || |
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219 iid == vmIntrinsics::_linkToSpecial) { |
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220 // could do this for all kinds, but would explode assembly code size |
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221 trace_method_handle(_masm, "bad Method*:intrinsic_id"); |
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222 } |
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223 __ stop("bad Method*::intrinsic_id"); |
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224 __ BIND(L); |
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225 BLOCK_COMMENT("} verify_intrinsic_id"); |
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226 } |
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227 |
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228 // First task: Find out how big the argument list is. |
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229 int ref_kind = signature_polymorphic_intrinsic_ref_kind(iid); |
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230 assert(ref_kind != 0 || iid == vmIntrinsics::_invokeBasic, "must be _invokeBasic or a linkTo intrinsic"); |
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231 if (ref_kind == 0 || MethodHandles::ref_kind_has_receiver(ref_kind)) { |
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232 __ ld(param_size, in_bytes(Method::const_offset()), R19_method); |
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233 __ load_sized_value(param_size, in_bytes(ConstMethod::size_of_parameters_offset()), param_size, |
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234 sizeof(u2), /*is_signed*/ false); |
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235 // assert(sizeof(u2) == sizeof(ConstMethod::_size_of_parameters), ""); |
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236 } else { |
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237 DEBUG_ONLY(param_size = noreg); |
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238 } |
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239 |
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240 Register tmp_mh = noreg; |
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241 if (!is_signature_polymorphic_static(iid)) { |
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242 __ ld(tmp_mh = temp1, __ argument_offset(param_size, param_size, 0), argbase); |
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243 DEBUG_ONLY(param_size = noreg); |
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244 } |
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245 |
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246 if (TraceMethodHandles) { |
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247 if (tmp_mh != noreg) |
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248 __ mr(R23_method_handle, tmp_mh); // make stub happy |
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249 trace_method_handle_interpreter_entry(_masm, iid); |
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250 } |
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251 |
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252 if (iid == vmIntrinsics::_invokeBasic) { |
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253 generate_method_handle_dispatch(_masm, iid, tmp_mh, noreg, not_for_compiler_entry); |
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254 |
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255 } else { |
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256 // Adjust argument list by popping the trailing MemberName argument. |
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257 Register tmp_recv = noreg; |
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258 if (MethodHandles::ref_kind_has_receiver(ref_kind)) { |
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259 // Load the receiver (not the MH; the actual MemberName's receiver) up from the interpreter stack. |
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260 __ ld(tmp_recv = temp1, __ argument_offset(param_size, param_size, 0), argbase); |
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261 DEBUG_ONLY(param_size = noreg); |
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262 } |
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263 Register R19_member = R19_method; // MemberName ptr; incoming method ptr is dead now |
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264 __ ld(R19_member, RegisterOrConstant((intptr_t)8), argbase); |
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265 __ add(argbase, Interpreter::stackElementSize, argbase); |
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266 generate_method_handle_dispatch(_masm, iid, tmp_recv, R19_member, not_for_compiler_entry); |
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267 } |
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268 |
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269 return entry_point; |
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270 } |
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271 |
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272 void MethodHandles::generate_method_handle_dispatch(MacroAssembler* _masm, |
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273 vmIntrinsics::ID iid, |
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274 Register receiver_reg, |
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275 Register member_reg, |
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276 bool for_compiler_entry) { |
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277 assert(is_signature_polymorphic(iid), "expected invoke iid"); |
14445 | 278 Register temp1 = (for_compiler_entry ? R25_tmp5 : R7); |
14408
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279 Register temp2 = (for_compiler_entry ? R22_tmp2 : R8); |
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280 Register temp3 = (for_compiler_entry ? R23_tmp3 : R9); |
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281 Register temp4 = (for_compiler_entry ? R24_tmp4 : R10); |
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282 if (receiver_reg != noreg) assert_different_registers(temp1, temp2, temp3, temp4, receiver_reg); |
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283 if (member_reg != noreg) assert_different_registers(temp1, temp2, temp3, temp4, member_reg); |
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284 |
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285 if (iid == vmIntrinsics::_invokeBasic) { |
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286 // indirect through MH.form.vmentry.vmtarget |
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287 jump_to_lambda_form(_masm, receiver_reg, R19_method, temp1, temp2, for_compiler_entry); |
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288 } else { |
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289 // The method is a member invoker used by direct method handles. |
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290 if (VerifyMethodHandles) { |
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291 // make sure the trailing argument really is a MemberName (caller responsibility) |
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292 verify_klass(_masm, member_reg, SystemDictionary::WK_KLASS_ENUM_NAME(MemberName_klass), |
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293 temp1, temp2, |
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294 "MemberName required for invokeVirtual etc."); |
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295 } |
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296 |
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297 Register temp1_recv_klass = temp1; |
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298 if (iid != vmIntrinsics::_linkToStatic) { |
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299 __ verify_oop(receiver_reg); |
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300 if (iid == vmIntrinsics::_linkToSpecial) { |
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301 // Don't actually load the klass; just null-check the receiver. |
14445 | 302 __ null_check_throw(receiver_reg, -1, temp1, EXCEPTION_ENTRY); |
14408
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303 } else { |
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304 // load receiver klass itself |
14445 | 305 __ null_check_throw(receiver_reg, oopDesc::klass_offset_in_bytes(), temp1, EXCEPTION_ENTRY); |
14408
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306 __ load_klass(temp1_recv_klass, receiver_reg); |
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307 __ verify_klass_ptr(temp1_recv_klass); |
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308 } |
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309 BLOCK_COMMENT("check_receiver {"); |
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310 // The receiver for the MemberName must be in receiver_reg. |
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311 // Check the receiver against the MemberName.clazz |
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312 if (VerifyMethodHandles && iid == vmIntrinsics::_linkToSpecial) { |
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313 // Did not load it above... |
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314 __ load_klass(temp1_recv_klass, receiver_reg); |
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315 __ verify_klass_ptr(temp1_recv_klass); |
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316 } |
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317 if (VerifyMethodHandles && iid != vmIntrinsics::_linkToInterface) { |
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318 Label L_ok; |
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319 Register temp2_defc = temp2; |
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320 __ load_heap_oop_not_null(temp2_defc, NONZERO(java_lang_invoke_MemberName::clazz_offset_in_bytes()), member_reg); |
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321 load_klass_from_Class(_masm, temp2_defc, temp3, temp4); |
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322 __ verify_klass_ptr(temp2_defc); |
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323 __ check_klass_subtype(temp1_recv_klass, temp2_defc, temp3, temp4, L_ok); |
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324 // If we get here, the type check failed! |
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325 __ stop("receiver class disagrees with MemberName.clazz"); |
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326 __ BIND(L_ok); |
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327 } |
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328 BLOCK_COMMENT("} check_receiver"); |
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329 } |
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330 if (iid == vmIntrinsics::_linkToSpecial || |
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331 iid == vmIntrinsics::_linkToStatic) { |
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332 DEBUG_ONLY(temp1_recv_klass = noreg); // these guys didn't load the recv_klass |
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333 } |
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334 |
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335 // Live registers at this point: |
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336 // member_reg - MemberName that was the trailing argument |
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337 // temp1_recv_klass - klass of stacked receiver, if needed |
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338 // O5_savedSP - interpreter linkage (if interpreted) |
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339 // O0..O5 - compiler arguments (if compiled) |
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340 |
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341 Label L_incompatible_class_change_error; |
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342 switch (iid) { |
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343 case vmIntrinsics::_linkToSpecial: |
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344 if (VerifyMethodHandles) { |
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345 verify_ref_kind(_masm, JVM_REF_invokeSpecial, member_reg, temp2); |
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346 } |
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347 __ ld(R19_method, NONZERO(java_lang_invoke_MemberName::vmtarget_offset_in_bytes()), member_reg); |
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348 break; |
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349 |
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350 case vmIntrinsics::_linkToStatic: |
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351 if (VerifyMethodHandles) { |
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352 verify_ref_kind(_masm, JVM_REF_invokeStatic, member_reg, temp2); |
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353 } |
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354 __ ld(R19_method, NONZERO(java_lang_invoke_MemberName::vmtarget_offset_in_bytes()), member_reg); |
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355 break; |
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|
356 |
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357 case vmIntrinsics::_linkToVirtual: |
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358 { |
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359 // same as TemplateTable::invokevirtual, |
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360 // minus the CP setup and profiling: |
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|
361 |
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362 if (VerifyMethodHandles) { |
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363 verify_ref_kind(_masm, JVM_REF_invokeVirtual, member_reg, temp2); |
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364 } |
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|
365 |
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366 // pick out the vtable index from the MemberName, and then we can discard it: |
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367 Register temp2_index = temp2; |
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368 __ ld(temp2_index, NONZERO(java_lang_invoke_MemberName::vmindex_offset_in_bytes()), member_reg); |
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369 |
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370 if (VerifyMethodHandles) { |
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371 Label L_index_ok; |
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372 __ cmpdi(CCR1, temp2_index, 0); |
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373 __ bge(CCR1, L_index_ok); |
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374 __ stop("no virtual index"); |
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375 __ BIND(L_index_ok); |
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|
376 } |
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377 |
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378 // Note: The verifier invariants allow us to ignore MemberName.clazz and vmtarget |
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379 // at this point. And VerifyMethodHandles has already checked clazz, if needed. |
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380 |
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381 // get target Method* & entry point |
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382 __ lookup_virtual_method(temp1_recv_klass, temp2_index, R19_method); |
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383 break; |
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|
384 } |
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|
385 |
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386 case vmIntrinsics::_linkToInterface: |
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|
387 { |
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|
388 // same as TemplateTable::invokeinterface |
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389 // (minus the CP setup and profiling, with different argument motion) |
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390 if (VerifyMethodHandles) { |
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391 verify_ref_kind(_masm, JVM_REF_invokeInterface, member_reg, temp2); |
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392 } |
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|
393 |
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394 Register temp2_intf = temp2; |
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parents:
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|
395 __ load_heap_oop_not_null(temp2_intf, NONZERO(java_lang_invoke_MemberName::clazz_offset_in_bytes()), member_reg); |
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396 load_klass_from_Class(_masm, temp2_intf, temp3, temp4); |
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397 __ verify_klass_ptr(temp2_intf); |
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|
398 |
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|
399 Register vtable_index = R19_method; |
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parents:
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|
400 __ ld(vtable_index, NONZERO(java_lang_invoke_MemberName::vmindex_offset_in_bytes()), member_reg); |
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|
401 if (VerifyMethodHandles) { |
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parents:
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|
402 Label L_index_ok; |
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|
403 __ cmpdi(CCR1, vtable_index, 0); |
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404 __ bge(CCR1, L_index_ok); |
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parents:
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405 __ stop("invalid vtable index for MH.invokeInterface"); |
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parents:
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|
406 __ BIND(L_index_ok); |
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parents:
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|
407 } |
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parents:
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|
408 |
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|
409 // given intf, index, and recv klass, dispatch to the implementation method |
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410 __ lookup_interface_method(temp1_recv_klass, temp2_intf, |
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|
411 // note: next two args must be the same: |
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parents:
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|
412 vtable_index, R19_method, |
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parents:
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|
413 temp3, temp4, |
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|
414 L_incompatible_class_change_error); |
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|
415 break; |
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parents:
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|
416 } |
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|
417 |
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|
418 default: |
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419 fatal(err_msg_res("unexpected intrinsic %d: %s", iid, vmIntrinsics::name_at(iid))); |
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420 break; |
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|
421 } |
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|
422 |
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423 // Live at this point: |
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424 // R19_method |
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|
425 // O5_savedSP (if interpreted) |
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|
426 |
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427 // After figuring out which concrete method to call, jump into it. |
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428 // Note that this works in the interpreter with no data motion. |
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|
429 // But the compiled version will require that rcx_recv be shifted out. |
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430 __ verify_method_ptr(R19_method); |
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|
431 jump_from_method_handle(_masm, R19_method, temp1, temp2, for_compiler_entry); |
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|
432 |
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|
433 if (iid == vmIntrinsics::_linkToInterface) { |
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434 __ BIND(L_incompatible_class_change_error); |
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435 __ load_const_optimized(temp1, StubRoutines::throw_IncompatibleClassChangeError_entry()); |
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|
436 __ mtctr(temp1); |
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parents:
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|
437 __ bctr(); |
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parents:
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|
438 } |
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parents:
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|
439 } |
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parents:
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|
440 } |
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parents:
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|
441 |
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|
442 #ifndef PRODUCT |
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|
443 void trace_method_handle_stub(const char* adaptername, |
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|
444 oopDesc* mh, |
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parents:
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|
445 intptr_t* entry_sp, |
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|
446 intptr_t* saved_regs) { |
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|
447 |
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448 bool has_mh = (strstr(adaptername, "/static") == NULL && |
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449 strstr(adaptername, "linkTo") == NULL); // static linkers don't have MH |
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450 const char* mh_reg_name = has_mh ? "R23_method_handle" : "G23"; |
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451 tty->print_cr("MH %s %s="INTPTR_FORMAT " sp=" INTPTR_FORMAT, |
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452 adaptername, mh_reg_name, (intptr_t) mh, entry_sp); |
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|
453 |
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parents:
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|
454 if (Verbose) { |
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parents:
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|
455 tty->print_cr("Registers:"); |
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|
456 const int abi_offset = frame::abi_112_size / 8; |
14445 | 457 for (int i = R3->encoding(); i <= R12->encoding(); i++) { |
14408
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|
458 Register r = as_Register(i); |
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parents:
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|
459 int count = i - R3->encoding(); |
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parents:
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|
460 // The registers are stored in reverse order on the stack (by save_volatile_gprs(R1_SP, abi_112_size)). |
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|
461 tty->print("%3s=" PTR_FORMAT, r->name(), saved_regs[abi_offset + count]); |
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|
462 if ((count + 1) % 4 == 0) { |
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parents:
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|
463 tty->cr(); |
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parents:
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|
464 } else { |
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parents:
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|
465 tty->print(", "); |
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parents:
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|
466 } |
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parents:
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|
467 } |
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parents:
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|
468 tty->cr(); |
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parents:
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changeset
|
469 |
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parents:
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changeset
|
470 { |
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parents:
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changeset
|
471 // dumping last frame with frame::describe |
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parents:
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|
472 |
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parents:
diff
changeset
|
473 JavaThread* p = JavaThread::active(); |
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parents:
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|
474 |
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parents:
diff
changeset
|
475 ResourceMark rm; |
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parents:
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|
476 PRESERVE_EXCEPTION_MARK; // may not be needed by safer and unexpensive here |
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parents:
diff
changeset
|
477 FrameValues values; |
ec28f9c041ff
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parents:
diff
changeset
|
478 |
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parents:
diff
changeset
|
479 // Note: We want to allow trace_method_handle from any call site. |
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|
480 // While trace_method_handle creates a frame, it may be entered |
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|
481 // without a PC on the stack top (e.g. not just after a call). |
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|
482 // Walking that frame could lead to failures due to that invalid PC. |
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parents:
diff
changeset
|
483 // => carefully detect that frame when doing the stack walking |
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parents:
diff
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|
484 |
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parents:
diff
changeset
|
485 // Current C frame |
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parents:
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|
486 frame cur_frame = os::current_frame(); |
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parents:
diff
changeset
|
487 |
ec28f9c041ff
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parents:
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changeset
|
488 // Robust search of trace_calling_frame (independant of inlining). |
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|
489 // Assumes saved_regs comes from a pusha in the trace_calling_frame. |
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|
490 assert(cur_frame.sp() < saved_regs, "registers not saved on stack ?"); |
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|
491 frame trace_calling_frame = os::get_sender_for_C_frame(&cur_frame); |
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|
492 while (trace_calling_frame.fp() < saved_regs) { |
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|
493 trace_calling_frame = os::get_sender_for_C_frame(&trace_calling_frame); |
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parents:
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|
494 } |
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parents:
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|
495 |
14445 | 496 // Safely create a frame and call frame::describe. |
14408
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|
497 intptr_t *dump_sp = trace_calling_frame.sender_sp(); |
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parents:
diff
changeset
|
498 |
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parents:
diff
changeset
|
499 frame dump_frame = frame(dump_sp); |
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parents:
diff
changeset
|
500 dump_frame.describe(values, 1); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
501 |
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parents:
diff
changeset
|
502 values.describe(-1, saved_regs, "raw top of stack"); |
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parents:
diff
changeset
|
503 |
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parents:
diff
changeset
|
504 tty->print_cr("Stack layout:"); |
ec28f9c041ff
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parents:
diff
changeset
|
505 values.print(p); |
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parents:
diff
changeset
|
506 } |
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parents:
diff
changeset
|
507 |
ec28f9c041ff
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parents:
diff
changeset
|
508 if (has_mh && mh->is_oop()) { |
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parents:
diff
changeset
|
509 mh->print(); |
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parents:
diff
changeset
|
510 if (java_lang_invoke_MethodHandle::is_instance(mh)) { |
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parents:
diff
changeset
|
511 if (java_lang_invoke_MethodHandle::form_offset_in_bytes() != 0) |
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parents:
diff
changeset
|
512 java_lang_invoke_MethodHandle::form(mh)->print(); |
ec28f9c041ff
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parents:
diff
changeset
|
513 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
514 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
515 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
516 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
517 |
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parents:
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changeset
|
518 void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) { |
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parents:
diff
changeset
|
519 if (!TraceMethodHandles) return; |
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parents:
diff
changeset
|
520 |
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parents:
diff
changeset
|
521 BLOCK_COMMENT("trace_method_handle {"); |
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parents:
diff
changeset
|
522 |
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parents:
diff
changeset
|
523 int nbytes_save = 10 * 8; // 10 volatile gprs |
ec28f9c041ff
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parents:
diff
changeset
|
524 __ save_LR_CR(R0); |
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parents:
diff
changeset
|
525 __ mr(R0, R1_SP); // saved_sp |
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parents:
diff
changeset
|
526 assert(Assembler::is_simm(-nbytes_save, 16), "Overwriting R0"); |
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parents:
diff
changeset
|
527 // push_frame_abi112 only uses R0 if nbytes_save is wider than 16 bit |
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parents:
diff
changeset
|
528 __ push_frame_abi112(nbytes_save, R0); |
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parents:
diff
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529 __ save_volatile_gprs(R1_SP, frame::abi_112_size); // Except R0. |
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530 |
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531 __ load_const(R3_ARG1, (address)adaptername); |
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532 __ mr(R4_ARG2, R23_method_handle); |
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533 __ mr(R5_ARG3, R0); // saved_sp |
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534 __ mr(R6_ARG4, R1_SP); |
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535 __ call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub)); |
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536 |
14445 | 537 __ restore_volatile_gprs(R1_SP, 112); // Except R0. |
14408
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538 __ pop_frame(); |
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539 __ restore_LR_CR(R0); |
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540 |
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541 BLOCK_COMMENT("} trace_method_handle"); |
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542 } |
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543 #endif // PRODUCT |