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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 #include "src/v8.h" | 5 #include "src/v8.h" |
6 | 6 |
7 #if V8_TARGET_ARCH_IA32 | 7 #if V8_TARGET_ARCH_IA32 |
8 | 8 |
9 #include "src/base/bits.h" | 9 #include "src/base/bits.h" |
10 #include "src/base/division-by-constant.h" | 10 #include "src/base/division-by-constant.h" |
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935 mov(ebp, esp); | 935 mov(ebp, esp); |
936 | 936 |
937 // Reserve room for entry stack pointer and push the code object. | 937 // Reserve room for entry stack pointer and push the code object. |
938 DCHECK(ExitFrameConstants::kSPOffset == -1 * kPointerSize); | 938 DCHECK(ExitFrameConstants::kSPOffset == -1 * kPointerSize); |
939 push(Immediate(0)); // Saved entry sp, patched before call. | 939 push(Immediate(0)); // Saved entry sp, patched before call. |
940 push(Immediate(CodeObject())); // Accessed from ExitFrame::code_slot. | 940 push(Immediate(CodeObject())); // Accessed from ExitFrame::code_slot. |
941 | 941 |
942 // Save the frame pointer and the context in top. | 942 // Save the frame pointer and the context in top. |
943 ExternalReference c_entry_fp_address(Isolate::kCEntryFPAddress, isolate()); | 943 ExternalReference c_entry_fp_address(Isolate::kCEntryFPAddress, isolate()); |
944 ExternalReference context_address(Isolate::kContextAddress, isolate()); | 944 ExternalReference context_address(Isolate::kContextAddress, isolate()); |
| 945 ExternalReference c_function_address(Isolate::kCFunctionAddress, isolate()); |
945 mov(Operand::StaticVariable(c_entry_fp_address), ebp); | 946 mov(Operand::StaticVariable(c_entry_fp_address), ebp); |
946 mov(Operand::StaticVariable(context_address), esi); | 947 mov(Operand::StaticVariable(context_address), esi); |
| 948 mov(Operand::StaticVariable(c_function_address), ebx); |
947 } | 949 } |
948 | 950 |
949 | 951 |
950 void MacroAssembler::EnterExitFrameEpilogue(int argc, bool save_doubles) { | 952 void MacroAssembler::EnterExitFrameEpilogue(int argc, bool save_doubles) { |
951 // Optionally save all XMM registers. | 953 // Optionally save all XMM registers. |
952 if (save_doubles) { | 954 if (save_doubles) { |
953 int space = XMMRegister::kMaxNumRegisters * kDoubleSize + | 955 int space = XMMRegister::kMaxNumRegisters * kDoubleSize + |
954 argc * kPointerSize; | 956 argc * kPointerSize; |
955 sub(esp, Immediate(space)); | 957 sub(esp, Immediate(space)); |
956 const int offset = -2 * kPointerSize; | 958 const int offset = -2 * kPointerSize; |
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3445 if (mag.shift > 0) sar(edx, mag.shift); | 3447 if (mag.shift > 0) sar(edx, mag.shift); |
3446 mov(eax, dividend); | 3448 mov(eax, dividend); |
3447 shr(eax, 31); | 3449 shr(eax, 31); |
3448 add(edx, eax); | 3450 add(edx, eax); |
3449 } | 3451 } |
3450 | 3452 |
3451 | 3453 |
3452 } } // namespace v8::internal | 3454 } } // namespace v8::internal |
3453 | 3455 |
3454 #endif // V8_TARGET_ARCH_IA32 | 3456 #endif // V8_TARGET_ARCH_IA32 |
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