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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_X87 | 7 #if V8_TARGET_ARCH_X87 |
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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899 mov(ebp, esp); | 899 mov(ebp, esp); |
900 | 900 |
901 // Reserve room for entry stack pointer and push the code object. | 901 // Reserve room for entry stack pointer and push the code object. |
902 DCHECK(ExitFrameConstants::kSPOffset == -1 * kPointerSize); | 902 DCHECK(ExitFrameConstants::kSPOffset == -1 * kPointerSize); |
903 push(Immediate(0)); // Saved entry sp, patched before call. | 903 push(Immediate(0)); // Saved entry sp, patched before call. |
904 push(Immediate(CodeObject())); // Accessed from ExitFrame::code_slot. | 904 push(Immediate(CodeObject())); // Accessed from ExitFrame::code_slot. |
905 | 905 |
906 // Save the frame pointer and the context in top. | 906 // Save the frame pointer and the context in top. |
907 ExternalReference c_entry_fp_address(Isolate::kCEntryFPAddress, isolate()); | 907 ExternalReference c_entry_fp_address(Isolate::kCEntryFPAddress, isolate()); |
908 ExternalReference context_address(Isolate::kContextAddress, isolate()); | 908 ExternalReference context_address(Isolate::kContextAddress, isolate()); |
| 909 ExternalReference c_function_address(Isolate::kCFunctionAddress, isolate()); |
909 mov(Operand::StaticVariable(c_entry_fp_address), ebp); | 910 mov(Operand::StaticVariable(c_entry_fp_address), ebp); |
910 mov(Operand::StaticVariable(context_address), esi); | 911 mov(Operand::StaticVariable(context_address), esi); |
| 912 mov(Operand::StaticVariable(c_function_address), ebx); |
911 } | 913 } |
912 | 914 |
913 | 915 |
914 void MacroAssembler::EnterExitFrameEpilogue(int argc, bool save_doubles) { | 916 void MacroAssembler::EnterExitFrameEpilogue(int argc, bool save_doubles) { |
915 // Optionally save FPU state. | 917 // Optionally save FPU state. |
916 if (save_doubles) { | 918 if (save_doubles) { |
917 // Store FPU state to m108byte. | 919 // Store FPU state to m108byte. |
918 int space = 108 + argc * kPointerSize; | 920 int space = 108 + argc * kPointerSize; |
919 sub(esp, Immediate(space)); | 921 sub(esp, Immediate(space)); |
920 const int offset = -2 * kPointerSize; // entry fp + code object. | 922 const int offset = -2 * kPointerSize; // entry fp + code object. |
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3353 if (mag.shift > 0) sar(edx, mag.shift); | 3355 if (mag.shift > 0) sar(edx, mag.shift); |
3354 mov(eax, dividend); | 3356 mov(eax, dividend); |
3355 shr(eax, 31); | 3357 shr(eax, 31); |
3356 add(edx, eax); | 3358 add(edx, eax); |
3357 } | 3359 } |
3358 | 3360 |
3359 | 3361 |
3360 } } // namespace v8::internal | 3362 } } // namespace v8::internal |
3361 | 3363 |
3362 #endif // V8_TARGET_ARCH_X87 | 3364 #endif // V8_TARGET_ARCH_X87 |
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