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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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1568 const int kArgExtraStackSpace = 0; | 1568 const int kArgExtraStackSpace = 0; |
1569 const int kMaxRegisterResultSize = 2; | 1569 const int kMaxRegisterResultSize = 2; |
1570 #endif // _WIN64 | 1570 #endif // _WIN64 |
1571 | 1571 |
1572 // Enter the exit frame that transitions from JavaScript to C++. | 1572 // Enter the exit frame that transitions from JavaScript to C++. |
1573 int arg_stack_space = | 1573 int arg_stack_space = |
1574 kArgExtraStackSpace + | 1574 kArgExtraStackSpace + |
1575 (result_size() <= kMaxRegisterResultSize ? 0 : result_size()); | 1575 (result_size() <= kMaxRegisterResultSize ? 0 : result_size()); |
1576 if (argv_in_register()) { | 1576 if (argv_in_register()) { |
1577 DCHECK(!save_doubles()); | 1577 DCHECK(!save_doubles()); |
| 1578 DCHECK(!is_builtin_exit()); |
1578 __ EnterApiExitFrame(arg_stack_space); | 1579 __ EnterApiExitFrame(arg_stack_space); |
1579 // Move argc into r14 (argv is already in r15). | 1580 // Move argc into r14 (argv is already in r15). |
1580 __ movp(r14, rax); | 1581 __ movp(r14, rax); |
1581 } else { | 1582 } else { |
1582 __ EnterExitFrame(arg_stack_space, save_doubles()); | 1583 __ EnterExitFrame( |
| 1584 arg_stack_space, save_doubles(), |
| 1585 is_builtin_exit() ? StackFrame::BUILTIN_EXIT : StackFrame::EXIT); |
1583 } | 1586 } |
1584 | 1587 |
1585 // rbx: pointer to builtin function (C callee-saved). | 1588 // rbx: pointer to builtin function (C callee-saved). |
1586 // rbp: frame pointer of exit frame (restored after C call). | 1589 // rbp: frame pointer of exit frame (restored after C call). |
1587 // rsp: stack pointer (restored after C call). | 1590 // rsp: stack pointer (restored after C call). |
1588 // r14: number of arguments including receiver (C callee-saved). | 1591 // r14: number of arguments including receiver (C callee-saved). |
1589 // r15: argv pointer (C callee-saved). | 1592 // r15: argv pointer (C callee-saved). |
1590 | 1593 |
1591 // Check stack alignment. | 1594 // Check stack alignment. |
1592 if (FLAG_debug_code) { | 1595 if (FLAG_debug_code) { |
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5216 kStackUnwindSpace, nullptr, return_value_operand, | 5219 kStackUnwindSpace, nullptr, return_value_operand, |
5217 NULL); | 5220 NULL); |
5218 } | 5221 } |
5219 | 5222 |
5220 #undef __ | 5223 #undef __ |
5221 | 5224 |
5222 } // namespace internal | 5225 } // namespace internal |
5223 } // namespace v8 | 5226 } // namespace v8 |
5224 | 5227 |
5225 #endif // V8_TARGET_ARCH_X64 | 5228 #endif // V8_TARGET_ARCH_X64 |
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