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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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2021 push(rbp); | 2021 push(rbp); |
2022 movq(rbp, rsp); | 2022 movq(rbp, rsp); |
2023 | 2023 |
2024 // Reserve room for entry stack pointer and push the code object. | 2024 // Reserve room for entry stack pointer and push the code object. |
2025 ASSERT(ExitFrameConstants::kSPOffset == -1 * kPointerSize); | 2025 ASSERT(ExitFrameConstants::kSPOffset == -1 * kPointerSize); |
2026 push(Immediate(0)); // Saved entry sp, patched before call. | 2026 push(Immediate(0)); // Saved entry sp, patched before call. |
2027 movq(kScratchRegister, CodeObject(), RelocInfo::EMBEDDED_OBJECT); | 2027 movq(kScratchRegister, CodeObject(), RelocInfo::EMBEDDED_OBJECT); |
2028 push(kScratchRegister); // Accessed from EditFrame::code_slot. | 2028 push(kScratchRegister); // Accessed from EditFrame::code_slot. |
2029 | 2029 |
2030 // Save the frame pointer and the context in top. | 2030 // Save the frame pointer and the context in top. |
2031 ExternalReference c_entry_fp_address(Top::k_c_entry_fp_address); | |
2032 ExternalReference context_address(Top::k_context_address); | |
2033 if (save_rax) { | 2031 if (save_rax) { |
2034 movq(r14, rax); // Backup rax before we use it. | 2032 movq(r14, rax); // Backup rax in callee-save register. |
2035 } | 2033 } |
2036 | 2034 |
2037 movq(rax, rbp); | 2035 movq(kScratchRegister, ExternalReference(Top::k_c_entry_fp_address)); |
2038 store_rax(c_entry_fp_address); | 2036 movq(Operand(kScratchRegister, 0), rbp); |
2039 movq(rax, rsi); | 2037 |
2040 store_rax(context_address); | 2038 movq(kScratchRegister, ExternalReference(Top::k_context_address)); |
| 2039 movq(Operand(kScratchRegister, 0), rsi); |
2041 } | 2040 } |
2042 | 2041 |
2043 | 2042 |
2044 void MacroAssembler::EnterExitFrameEpilogue(int arg_stack_space, | 2043 void MacroAssembler::EnterExitFrameEpilogue(int arg_stack_space, |
2045 bool save_doubles) { | 2044 bool save_doubles) { |
2046 #ifdef _WIN64 | 2045 #ifdef _WIN64 |
2047 const int kShadowSpace = 4; | 2046 const int kShadowSpace = 4; |
2048 arg_stack_space += kShadowSpace; | 2047 arg_stack_space += kShadowSpace; |
2049 #endif | 2048 #endif |
2050 // Optionally save all XMM registers. | 2049 // Optionally save all XMM registers. |
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2687 CPU::FlushICache(address_, size_); | 2686 CPU::FlushICache(address_, size_); |
2688 | 2687 |
2689 // Check that the code was patched as expected. | 2688 // Check that the code was patched as expected. |
2690 ASSERT(masm_.pc_ == address_ + size_); | 2689 ASSERT(masm_.pc_ == address_ + size_); |
2691 ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); | 2690 ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
2692 } | 2691 } |
2693 | 2692 |
2694 } } // namespace v8::internal | 2693 } } // namespace v8::internal |
2695 | 2694 |
2696 #endif // V8_TARGET_ARCH_X64 | 2695 #endif // V8_TARGET_ARCH_X64 |
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