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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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 #if V8_TARGET_ARCH_X64 | 5 #if V8_TARGET_ARCH_X64 |
6 | 6 |
7 #include "src/code-stubs.h" | 7 #include "src/code-stubs.h" |
8 #include "src/api-arguments.h" | 8 #include "src/api-arguments.h" |
9 #include "src/bootstrapper.h" | 9 #include "src/bootstrapper.h" |
10 #include "src/codegen.h" | 10 #include "src/codegen.h" |
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1682 const int kArgExtraStackSpace = 0; | 1682 const int kArgExtraStackSpace = 0; |
1683 const int kMaxRegisterResultSize = 2; | 1683 const int kMaxRegisterResultSize = 2; |
1684 #endif // _WIN64 | 1684 #endif // _WIN64 |
1685 | 1685 |
1686 // Enter the exit frame that transitions from JavaScript to C++. | 1686 // Enter the exit frame that transitions from JavaScript to C++. |
1687 int arg_stack_space = | 1687 int arg_stack_space = |
1688 kArgExtraStackSpace + | 1688 kArgExtraStackSpace + |
1689 (result_size() <= kMaxRegisterResultSize ? 0 : result_size()); | 1689 (result_size() <= kMaxRegisterResultSize ? 0 : result_size()); |
1690 if (argv_in_register()) { | 1690 if (argv_in_register()) { |
1691 DCHECK(!save_doubles()); | 1691 DCHECK(!save_doubles()); |
| 1692 DCHECK(!is_builtin_exit()); |
1692 __ EnterApiExitFrame(arg_stack_space); | 1693 __ EnterApiExitFrame(arg_stack_space); |
1693 // Move argc into r14 (argv is already in r15). | 1694 // Move argc into r14 (argv is already in r15). |
1694 __ movp(r14, rax); | 1695 __ movp(r14, rax); |
1695 } else { | 1696 } else { |
1696 __ EnterExitFrame(arg_stack_space, save_doubles()); | 1697 __ EnterExitFrame( |
| 1698 arg_stack_space, save_doubles(), |
| 1699 is_builtin_exit() ? StackFrame::BUILTIN_EXIT : StackFrame::EXIT); |
1697 } | 1700 } |
1698 | 1701 |
1699 // rbx: pointer to builtin function (C callee-saved). | 1702 // rbx: pointer to builtin function (C callee-saved). |
1700 // rbp: frame pointer of exit frame (restored after C call). | 1703 // rbp: frame pointer of exit frame (restored after C call). |
1701 // rsp: stack pointer (restored after C call). | 1704 // rsp: stack pointer (restored after C call). |
1702 // r14: number of arguments including receiver (C callee-saved). | 1705 // r14: number of arguments including receiver (C callee-saved). |
1703 // r15: argv pointer (C callee-saved). | 1706 // r15: argv pointer (C callee-saved). |
1704 | 1707 |
1705 // Check stack alignment. | 1708 // Check stack alignment. |
1706 if (FLAG_debug_code) { | 1709 if (FLAG_debug_code) { |
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5330 kStackUnwindSpace, nullptr, return_value_operand, | 5333 kStackUnwindSpace, nullptr, return_value_operand, |
5331 NULL); | 5334 NULL); |
5332 } | 5335 } |
5333 | 5336 |
5334 #undef __ | 5337 #undef __ |
5335 | 5338 |
5336 } // namespace internal | 5339 } // namespace internal |
5337 } // namespace v8 | 5340 } // namespace v8 |
5338 | 5341 |
5339 #endif // V8_TARGET_ARCH_X64 | 5342 #endif // V8_TARGET_ARCH_X64 |
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