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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #if V8_TARGET_ARCH_X87 | 5 #if V8_TARGET_ARCH_X87 |
6 | 6 |
7 #include "src/code-factory.h" | 7 #include "src/code-factory.h" |
8 #include "src/codegen.h" | 8 #include "src/codegen.h" |
9 #include "src/deoptimizer.h" | 9 #include "src/deoptimizer.h" |
10 #include "src/full-codegen/full-codegen.h" | 10 #include "src/full-codegen/full-codegen.h" |
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1004 | 1004 |
1005 void Builtins::Generate_InstantiateAsmJs(MacroAssembler* masm) { | 1005 void Builtins::Generate_InstantiateAsmJs(MacroAssembler* masm) { |
1006 // ----------- S t a t e ------------- | 1006 // ----------- S t a t e ------------- |
1007 // -- eax : argument count (preserved for callee) | 1007 // -- eax : argument count (preserved for callee) |
1008 // -- edx : new target (preserved for callee) | 1008 // -- edx : new target (preserved for callee) |
1009 // -- edi : target function (preserved for callee) | 1009 // -- edi : target function (preserved for callee) |
1010 // ----------------------------------- | 1010 // ----------------------------------- |
1011 Label failed; | 1011 Label failed; |
1012 { | 1012 { |
1013 FrameScope scope(masm, StackFrame::INTERNAL); | 1013 FrameScope scope(masm, StackFrame::INTERNAL); |
| 1014 // Preserve argument count for later compare. |
| 1015 __ mov(ecx, eax); |
1014 // Push the number of arguments to the callee. | 1016 // Push the number of arguments to the callee. |
1015 __ SmiTag(eax); | 1017 __ SmiTag(eax); |
1016 __ push(eax); | 1018 __ push(eax); |
1017 // Push a copy of the target function and the new target. | 1019 // Push a copy of the target function and the new target. |
1018 __ push(edi); | 1020 __ push(edi); |
1019 __ push(edx); | 1021 __ push(edx); |
1020 | 1022 |
1021 // The function. | 1023 // The function. |
1022 __ push(edi); | 1024 __ push(edi); |
1023 // Copy arguments from caller (stdlib, foreign, heap). | 1025 // Copy arguments from caller (stdlib, foreign, heap). |
1024 for (int i = 2; i >= 0; --i) { | 1026 Label args_done; |
1025 __ push(Operand( | 1027 __ cmp(ecx, Immediate(0)); |
1026 ebp, StandardFrameConstants::kCallerSPOffset + i * kPointerSize)); | 1028 __ j(equal, &args_done, Label::kNear); |
1027 } | 1029 |
| 1030 Label args2; |
| 1031 __ cmp(ecx, Immediate(1)); |
| 1032 __ j(not_equal, &args2, Label::kNear); |
| 1033 __ Push(Operand( |
| 1034 ebp, StandardFrameConstants::kCallerSPOffset + 0 * kPointerSize)); |
| 1035 __ jmp(&args_done, Label::kNear); |
| 1036 |
| 1037 __ bind(&args2); |
| 1038 Label args3; |
| 1039 __ cmp(ecx, Immediate(2)); |
| 1040 __ j(not_equal, &args3, Label::kNear); |
| 1041 __ Push(Operand( |
| 1042 ebp, StandardFrameConstants::kCallerSPOffset + 1 * kPointerSize)); |
| 1043 __ Push(Operand( |
| 1044 ebp, StandardFrameConstants::kCallerSPOffset + 0 * kPointerSize)); |
| 1045 __ jmp(&args_done, Label::kNear); |
| 1046 |
| 1047 __ bind(&args3); |
| 1048 __ Push(Operand( |
| 1049 ebp, StandardFrameConstants::kCallerSPOffset + 2 * kPointerSize)); |
| 1050 __ Push(Operand( |
| 1051 ebp, StandardFrameConstants::kCallerSPOffset + 1 * kPointerSize)); |
| 1052 __ Push(Operand( |
| 1053 ebp, StandardFrameConstants::kCallerSPOffset + 0 * kPointerSize)); |
| 1054 __ bind(&args_done); |
| 1055 |
| 1056 // Increment and restore argument count to call runtime method |
| 1057 // with function as extra argument. |
| 1058 __ inc(ecx); |
| 1059 __ mov(eax, ecx); |
1028 // Call runtime, on success unwind frame, and parent frame. | 1060 // Call runtime, on success unwind frame, and parent frame. |
1029 __ CallRuntime(Runtime::kInstantiateAsmJs, 4); | 1061 __ CallRuntime(Runtime::kInstantiateAsmJs, -1); |
1030 // A smi 0 is returned on failure, an object on success. | 1062 // A smi 0 is returned on failure, an object on success. |
1031 __ JumpIfSmi(eax, &failed, Label::kNear); | 1063 __ JumpIfSmi(eax, &failed, Label::kNear); |
| 1064 |
| 1065 __ Pop(ecx); |
| 1066 __ Pop(ecx); |
| 1067 __ Pop(ecx); |
| 1068 __ SmiUntag(ecx); |
1032 scope.GenerateLeaveFrame(); | 1069 scope.GenerateLeaveFrame(); |
1033 __ ret(4 * kPointerSize); | 1070 |
| 1071 __ Pop(ebx); |
| 1072 __ inc(ecx); |
| 1073 __ lea(esp, Operand(esp, ecx, times_pointer_size, 0)); |
| 1074 __ Push(ebx); |
| 1075 __ ret(0); |
1034 | 1076 |
1035 __ bind(&failed); | 1077 __ bind(&failed); |
1036 // Restore target function and new target. | 1078 // Restore target function and new target. |
1037 __ pop(edx); | 1079 __ pop(edx); |
1038 __ pop(edi); | 1080 __ pop(edi); |
1039 __ pop(eax); | 1081 __ pop(eax); |
1040 __ SmiUntag(eax); | 1082 __ SmiUntag(eax); |
1041 } | 1083 } |
1042 // On failure, tail call back to regular js. | 1084 // On failure, tail call back to regular js. |
1043 GenerateTailCallToReturnedCode(masm, Runtime::kCompileLazy); | 1085 GenerateTailCallToReturnedCode(masm, Runtime::kCompileBaseline); |
1044 } | 1086 } |
1045 | 1087 |
1046 static void GenerateMakeCodeYoungAgainCommon(MacroAssembler* masm) { | 1088 static void GenerateMakeCodeYoungAgainCommon(MacroAssembler* masm) { |
1047 // For now, we are relying on the fact that make_code_young doesn't do any | 1089 // For now, we are relying on the fact that make_code_young doesn't do any |
1048 // garbage collection which allows us to save/restore the registers without | 1090 // garbage collection which allows us to save/restore the registers without |
1049 // worrying about which of them contain pointers. We also don't build an | 1091 // worrying about which of them contain pointers. We also don't build an |
1050 // internal frame to make the code faster, since we shouldn't have to do stack | 1092 // internal frame to make the code faster, since we shouldn't have to do stack |
1051 // crawls in MakeCodeYoung. This seems a bit fragile. | 1093 // crawls in MakeCodeYoung. This seems a bit fragile. |
1052 | 1094 |
1053 // Re-execute the code that was patched back to the young age when | 1095 // Re-execute the code that was patched back to the young age when |
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3049 | 3091 |
3050 void Builtins::Generate_InterpreterOnStackReplacement(MacroAssembler* masm) { | 3092 void Builtins::Generate_InterpreterOnStackReplacement(MacroAssembler* masm) { |
3051 Generate_OnStackReplacementHelper(masm, true); | 3093 Generate_OnStackReplacementHelper(masm, true); |
3052 } | 3094 } |
3053 | 3095 |
3054 #undef __ | 3096 #undef __ |
3055 } // namespace internal | 3097 } // namespace internal |
3056 } // namespace v8 | 3098 } // namespace v8 |
3057 | 3099 |
3058 #endif // V8_TARGET_ARCH_X87 | 3100 #endif // V8_TARGET_ARCH_X87 |
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