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1 // Copyright 2006-2009 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2009 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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401 void MacroAssembler::LeaveExitFrame() { | 401 void MacroAssembler::LeaveExitFrame() { |
402 // Get the return address from the stack and restore the frame pointer. | 402 // Get the return address from the stack and restore the frame pointer. |
403 mov(ecx, Operand(ebp, 1 * kPointerSize)); | 403 mov(ecx, Operand(ebp, 1 * kPointerSize)); |
404 mov(ebp, Operand(ebp, 0 * kPointerSize)); | 404 mov(ebp, Operand(ebp, 0 * kPointerSize)); |
405 | 405 |
406 // Pop the arguments and the receiver from the caller stack. | 406 // Pop the arguments and the receiver from the caller stack. |
407 lea(esp, Operand(esi, 1 * kPointerSize)); | 407 lea(esp, Operand(esi, 1 * kPointerSize)); |
408 | 408 |
409 // Push the return address to get ready to return. | 409 // Push the return address to get ready to return. |
410 push(ecx); | 410 push(ecx); |
411 | 411 |
412 LeaveExitFrameEpilogue(); | 412 LeaveExitFrameEpilogue(); |
413 } | 413 } |
414 | 414 |
415 void MacroAssembler::LeaveExitFrameEpilogue() { | 415 void MacroAssembler::LeaveExitFrameEpilogue() { |
416 // Restore current context from top and clear it in debug mode. | 416 // Restore current context from top and clear it in debug mode. |
417 ExternalReference context_address(Top::k_context_address); | 417 ExternalReference context_address(Top::k_context_address); |
418 mov(esi, Operand::StaticVariable(context_address)); | 418 mov(esi, Operand::StaticVariable(context_address)); |
419 #ifdef DEBUG | 419 #ifdef DEBUG |
420 mov(Operand::StaticVariable(context_address), Immediate(0)); | 420 mov(Operand::StaticVariable(context_address), Immediate(0)); |
421 #endif | 421 #endif |
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1808 | 1808 |
1809 // Check that the code was patched as expected. | 1809 // Check that the code was patched as expected. |
1810 ASSERT(masm_.pc_ == address_ + size_); | 1810 ASSERT(masm_.pc_ == address_ + size_); |
1811 ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); | 1811 ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
1812 } | 1812 } |
1813 | 1813 |
1814 | 1814 |
1815 } } // namespace v8::internal | 1815 } } // namespace v8::internal |
1816 | 1816 |
1817 #endif // V8_TARGET_ARCH_IA32 | 1817 #endif // V8_TARGET_ARCH_IA32 |
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