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1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "vm/globals.h" | 5 #include "vm/globals.h" |
6 #if defined(TARGET_ARCH_X64) | 6 #if defined(TARGET_ARCH_X64) |
7 | 7 |
8 #include "vm/runtime_entry.h" | 8 #include "vm/runtime_entry.h" |
9 | 9 |
10 #include "vm/assembler.h" | 10 #include "vm/assembler.h" |
11 #include "vm/stub_code.h" | 11 #include "vm/stub_code.h" |
12 | 12 |
13 namespace dart { | 13 namespace dart { |
14 | 14 |
15 #define __ assembler-> | 15 #define __ assembler-> |
16 | 16 |
17 | |
18 uword RuntimeEntry::GetEntryPoint() const { | 17 uword RuntimeEntry::GetEntryPoint() const { |
19 return reinterpret_cast<uword>(function()); | 18 return reinterpret_cast<uword>(function()); |
20 } | 19 } |
21 | 20 |
22 | |
23 // Generate code to call into the stub which will call the runtime | 21 // Generate code to call into the stub which will call the runtime |
24 // function. Input for the stub is as follows: | 22 // function. Input for the stub is as follows: |
25 // RSP : points to the arguments and return value array. | 23 // RSP : points to the arguments and return value array. |
26 // RBX : address of the runtime function to call. | 24 // RBX : address of the runtime function to call. |
27 // R10 : number of arguments to the call. | 25 // R10 : number of arguments to the call. |
28 void RuntimeEntry::Call(Assembler* assembler, intptr_t argument_count) const { | 26 void RuntimeEntry::Call(Assembler* assembler, intptr_t argument_count) const { |
29 if (is_leaf()) { | 27 if (is_leaf()) { |
30 ASSERT(argument_count == this->argument_count()); | 28 ASSERT(argument_count == this->argument_count()); |
31 COMPILE_ASSERT(CallingConventions::kVolatileCpuRegisters & (1 << RAX)); | 29 COMPILE_ASSERT(CallingConventions::kVolatileCpuRegisters & (1 << RAX)); |
32 __ movq(RAX, Address(THR, Thread::OffsetFromThread(this))); | 30 __ movq(RAX, Address(THR, Thread::OffsetFromThread(this))); |
33 __ CallCFunction(RAX); | 31 __ CallCFunction(RAX); |
34 } else { | 32 } else { |
35 // Argument count is not checked here, but in the runtime entry for a more | 33 // Argument count is not checked here, but in the runtime entry for a more |
36 // informative error message. | 34 // informative error message. |
37 __ movq(RBX, Address(THR, Thread::OffsetFromThread(this))); | 35 __ movq(RBX, Address(THR, Thread::OffsetFromThread(this))); |
38 __ movq(R10, Immediate(argument_count)); | 36 __ movq(R10, Immediate(argument_count)); |
39 __ CallToRuntime(); | 37 __ CallToRuntime(); |
40 } | 38 } |
41 } | 39 } |
42 | 40 |
43 } // namespace dart | 41 } // namespace dart |
44 | 42 |
45 #endif // defined TARGET_ARCH_X64 | 43 #endif // defined TARGET_ARCH_X64 |
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