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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_IA32) | 6 #if defined(TARGET_ARCH_IA32) |
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 // For regular runtime calls - | 23 // For regular runtime calls - |
26 // ESP : points to the arguments and return value array. | 24 // ESP : points to the arguments and return value array. |
27 // ECX : address of the runtime function to call. | 25 // ECX : address of the runtime function to call. |
28 // EDX : number of arguments to the call as Smi. | 26 // EDX : number of arguments to the call as Smi. |
29 // For leaf calls the caller is responsible to setup the arguments | 27 // For leaf calls the caller is responsible to setup the arguments |
30 // and look for return values based on the C calling convention. | 28 // and look for return values based on the C calling convention. |
31 void RuntimeEntry::Call(Assembler* assembler, intptr_t argument_count) const { | 29 void RuntimeEntry::Call(Assembler* assembler, intptr_t argument_count) const { |
32 if (is_leaf()) { | 30 if (is_leaf()) { |
33 ASSERT(argument_count == this->argument_count()); | 31 ASSERT(argument_count == this->argument_count()); |
34 ExternalLabel label(GetEntryPoint()); | 32 ExternalLabel label(GetEntryPoint()); |
35 __ call(&label); | 33 __ call(&label); |
36 } else { | 34 } else { |
37 // Argument count is not checked here, but in the runtime entry for a more | 35 // Argument count is not checked here, but in the runtime entry for a more |
38 // informative error message. | 36 // informative error message. |
39 __ movl(ECX, Immediate(GetEntryPoint())); | 37 __ movl(ECX, Immediate(GetEntryPoint())); |
40 __ movl(EDX, Immediate(argument_count)); | 38 __ movl(EDX, Immediate(argument_count)); |
41 __ CallToRuntime(); | 39 __ CallToRuntime(); |
42 } | 40 } |
43 } | 41 } |
44 | 42 |
45 } // namespace dart | 43 } // namespace dart |
46 | 44 |
47 #endif // defined TARGET_ARCH_IA32 | 45 #endif // defined TARGET_ARCH_IA32 |
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