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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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928 mov(ebp, esp); | 928 mov(ebp, esp); |
929 | 929 |
930 // Reserve room for entry stack pointer and push the code object. | 930 // Reserve room for entry stack pointer and push the code object. |
931 DCHECK(ExitFrameConstants::kSPOffset == -1 * kPointerSize); | 931 DCHECK(ExitFrameConstants::kSPOffset == -1 * kPointerSize); |
932 push(Immediate(0)); // Saved entry sp, patched before call. | 932 push(Immediate(0)); // Saved entry sp, patched before call. |
933 push(Immediate(CodeObject())); // Accessed from ExitFrame::code_slot. | 933 push(Immediate(CodeObject())); // Accessed from ExitFrame::code_slot. |
934 | 934 |
935 // Save the frame pointer and the context in top. | 935 // Save the frame pointer and the context in top. |
936 ExternalReference c_entry_fp_address(Isolate::kCEntryFPAddress, isolate()); | 936 ExternalReference c_entry_fp_address(Isolate::kCEntryFPAddress, isolate()); |
937 ExternalReference context_address(Isolate::kContextAddress, isolate()); | 937 ExternalReference context_address(Isolate::kContextAddress, isolate()); |
| 938 ExternalReference c_function_address(Isolate::kCFunctionAddress, isolate()); |
938 mov(Operand::StaticVariable(c_entry_fp_address), ebp); | 939 mov(Operand::StaticVariable(c_entry_fp_address), ebp); |
939 mov(Operand::StaticVariable(context_address), esi); | 940 mov(Operand::StaticVariable(context_address), esi); |
| 941 mov(Operand::StaticVariable(c_function_address), ebx); |
940 } | 942 } |
941 | 943 |
942 | 944 |
943 void MacroAssembler::EnterExitFrameEpilogue(int argc, bool save_doubles) { | 945 void MacroAssembler::EnterExitFrameEpilogue(int argc, bool save_doubles) { |
944 // Optionally save all XMM registers. | 946 // Optionally save all XMM registers. |
945 if (save_doubles) { | 947 if (save_doubles) { |
946 int space = XMMRegister::kMaxNumRegisters * kDoubleSize + | 948 int space = XMMRegister::kMaxNumRegisters * kDoubleSize + |
947 argc * kPointerSize; | 949 argc * kPointerSize; |
948 sub(esp, Immediate(space)); | 950 sub(esp, Immediate(space)); |
949 const int offset = -2 * kPointerSize; | 951 const int offset = -2 * kPointerSize; |
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3391 if (mag.shift > 0) sar(edx, mag.shift); | 3393 if (mag.shift > 0) sar(edx, mag.shift); |
3392 mov(eax, dividend); | 3394 mov(eax, dividend); |
3393 shr(eax, 31); | 3395 shr(eax, 31); |
3394 add(edx, eax); | 3396 add(edx, eax); |
3395 } | 3397 } |
3396 | 3398 |
3397 | 3399 |
3398 } } // namespace v8::internal | 3400 } } // namespace v8::internal |
3399 | 3401 |
3400 #endif // V8_TARGET_ARCH_IA32 | 3402 #endif // V8_TARGET_ARCH_IA32 |
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