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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 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 #ifndef V8_CODE_H_ | 5 #ifndef V8_CODE_H_ |
6 #define V8_CODE_H_ | 6 #define V8_CODE_H_ |
7 | 7 |
8 #include "src/allocation.h" | 8 #include "src/allocation.h" |
9 #include "src/handles.h" | 9 #include "src/handles.h" |
10 #include "src/objects.h" | 10 #include "src/objects.h" |
11 | 11 |
12 namespace v8 { | 12 namespace v8 { |
13 namespace internal { | 13 namespace internal { |
14 | 14 |
15 | 15 |
16 // Wrapper class for passing expected and actual parameter counts as | 16 // Wrapper class for passing expected and actual parameter counts as |
17 // either registers or immediate values. Used to make sure that the | 17 // either registers or immediate values. Used to make sure that the |
18 // caller provides exactly the expected number of parameters to the | 18 // caller provides exactly the expected number of parameters to the |
19 // callee. | 19 // callee. |
20 class ParameterCount BASE_EMBEDDED { | 20 class ParameterCount BASE_EMBEDDED { |
21 public: | 21 public: |
22 explicit ParameterCount(Register reg) | 22 explicit ParameterCount(Register reg) |
23 : reg_(reg), immediate_(0) { } | 23 : reg_(reg), immediate_(0) { } |
24 explicit ParameterCount(int immediate) | 24 explicit ParameterCount(int immediate) |
25 : reg_(no_reg), immediate_(immediate) { } | 25 : reg_(no_reg), immediate_(immediate) { } |
26 explicit ParameterCount(Handle<JSFunction> f) | 26 explicit ParameterCount(Handle<JSFunction> f) |
27 : reg_(no_reg), | 27 : reg_(no_reg), immediate_(f->shared()->formal_parameter_count()) { } |
28 immediate_(f->shared()->internal_formal_parameter_count()) {} | |
29 | 28 |
30 bool is_reg() const { return !reg_.is(no_reg); } | 29 bool is_reg() const { return !reg_.is(no_reg); } |
31 bool is_immediate() const { return !is_reg(); } | 30 bool is_immediate() const { return !is_reg(); } |
32 | 31 |
33 Register reg() const { | 32 Register reg() const { |
34 DCHECK(is_reg()); | 33 DCHECK(is_reg()); |
35 return reg_; | 34 return reg_; |
36 } | 35 } |
37 int immediate() const { | 36 int immediate() const { |
38 DCHECK(is_immediate()); | 37 DCHECK(is_immediate()); |
39 return immediate_; | 38 return immediate_; |
40 } | 39 } |
41 | 40 |
42 private: | 41 private: |
43 const Register reg_; | 42 const Register reg_; |
44 const int immediate_; | 43 const int immediate_; |
45 | 44 |
46 DISALLOW_IMPLICIT_CONSTRUCTORS(ParameterCount); | 45 DISALLOW_IMPLICIT_CONSTRUCTORS(ParameterCount); |
47 }; | 46 }; |
48 | 47 |
49 | 48 |
50 } } // namespace v8::internal | 49 } } // namespace v8::internal |
51 | 50 |
52 #endif // V8_CODE_H_ | 51 #endif // V8_CODE_H_ |
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