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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 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_COMPILER_LINKAGE_H_ | 5 #ifndef V8_COMPILER_LINKAGE_H_ |
6 #define V8_COMPILER_LINKAGE_H_ | 6 #define V8_COMPILER_LINKAGE_H_ |
7 | 7 |
8 #include "src/base/flags.h" | 8 #include "src/base/flags.h" |
9 #include "src/code-stubs.h" | 9 #include "src/code-stubs.h" |
10 #include "src/compiler/frame.h" | 10 #include "src/compiler/frame.h" |
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47 kNoFlags = 0u, | 47 kNoFlags = 0u, |
48 kNeedsFrameState = 1u << 0, | 48 kNeedsFrameState = 1u << 0, |
49 kPatchableCallSite = 1u << 1, | 49 kPatchableCallSite = 1u << 1, |
50 kNeedsNopAfterCall = 1u << 2, | 50 kNeedsNopAfterCall = 1u << 2, |
51 kPatchableCallSiteWithNop = kPatchableCallSite | kNeedsNopAfterCall | 51 kPatchableCallSiteWithNop = kPatchableCallSite | kNeedsNopAfterCall |
52 }; | 52 }; |
53 typedef base::Flags<Flag> Flags; | 53 typedef base::Flags<Flag> Flags; |
54 | 54 |
55 CallDescriptor(Kind kind, int8_t return_count, int16_t parameter_count, | 55 CallDescriptor(Kind kind, int8_t return_count, int16_t parameter_count, |
56 int16_t input_count, LinkageLocation* locations, | 56 int16_t input_count, LinkageLocation* locations, |
57 Operator::Property properties, RegList callee_saved_registers, | 57 Operator::Properties properties, |
58 Flags flags, const char* debug_name = "") | 58 RegList callee_saved_registers, Flags flags, |
| 59 const char* debug_name = "") |
59 : kind_(kind), | 60 : kind_(kind), |
60 return_count_(return_count), | 61 return_count_(return_count), |
61 parameter_count_(parameter_count), | 62 parameter_count_(parameter_count), |
62 input_count_(input_count), | 63 input_count_(input_count), |
63 locations_(locations), | 64 locations_(locations), |
64 properties_(properties), | 65 properties_(properties), |
65 callee_saved_registers_(callee_saved_registers), | 66 callee_saved_registers_(callee_saved_registers), |
66 flags_(flags), | 67 flags_(flags), |
67 debug_name_(debug_name) {} | 68 debug_name_(debug_name) {} |
68 // Returns the kind of this call. | 69 // Returns the kind of this call. |
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90 DCHECK(index < return_count_); | 91 DCHECK(index < return_count_); |
91 return locations_[0 + index]; // return locations start at 0. | 92 return locations_[0 + index]; // return locations start at 0. |
92 } | 93 } |
93 | 94 |
94 LinkageLocation GetInputLocation(int index) { | 95 LinkageLocation GetInputLocation(int index) { |
95 DCHECK(index < input_count_ + 1); // input_count + 1 is the context. | 96 DCHECK(index < input_count_ + 1); // input_count + 1 is the context. |
96 return locations_[return_count_ + index]; // inputs start after returns. | 97 return locations_[return_count_ + index]; // inputs start after returns. |
97 } | 98 } |
98 | 99 |
99 // Operator properties describe how this call can be optimized, if at all. | 100 // Operator properties describe how this call can be optimized, if at all. |
100 Operator::Property properties() const { return properties_; } | 101 Operator::Properties properties() const { return properties_; } |
101 | 102 |
102 // Get the callee-saved registers, if any, across this call. | 103 // Get the callee-saved registers, if any, across this call. |
103 RegList CalleeSavedRegisters() { return callee_saved_registers_; } | 104 RegList CalleeSavedRegisters() { return callee_saved_registers_; } |
104 | 105 |
105 const char* debug_name() const { return debug_name_; } | 106 const char* debug_name() const { return debug_name_; } |
106 | 107 |
107 private: | 108 private: |
108 friend class Linkage; | 109 friend class Linkage; |
109 | 110 |
110 Kind kind_; | 111 Kind kind_; |
111 int8_t return_count_; | 112 int8_t return_count_; |
112 int16_t parameter_count_; | 113 int16_t parameter_count_; |
113 int16_t input_count_; | 114 int16_t input_count_; |
114 LinkageLocation* locations_; | 115 LinkageLocation* locations_; |
115 Operator::Property properties_; | 116 Operator::Properties properties_; |
116 RegList callee_saved_registers_; | 117 RegList callee_saved_registers_; |
117 Flags flags_; | 118 Flags flags_; |
118 const char* debug_name_; | 119 const char* debug_name_; |
119 }; | 120 }; |
120 | 121 |
121 DEFINE_OPERATORS_FOR_FLAGS(CallDescriptor::Flags) | 122 DEFINE_OPERATORS_FOR_FLAGS(CallDescriptor::Flags) |
122 | 123 |
123 OStream& operator<<(OStream& os, const CallDescriptor& d); | 124 OStream& operator<<(OStream& os, const CallDescriptor& d); |
124 OStream& operator<<(OStream& os, const CallDescriptor::Kind& k); | 125 OStream& operator<<(OStream& os, const CallDescriptor::Kind& k); |
125 | 126 |
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142 explicit Linkage(CompilationInfo* info, CallDescriptor* incoming) | 143 explicit Linkage(CompilationInfo* info, CallDescriptor* incoming) |
143 : info_(info), incoming_(incoming) {} | 144 : info_(info), incoming_(incoming) {} |
144 | 145 |
145 // The call descriptor for this compilation unit describes the locations | 146 // The call descriptor for this compilation unit describes the locations |
146 // of incoming parameters and the outgoing return value(s). | 147 // of incoming parameters and the outgoing return value(s). |
147 CallDescriptor* GetIncomingDescriptor() { return incoming_; } | 148 CallDescriptor* GetIncomingDescriptor() { return incoming_; } |
148 CallDescriptor* GetJSCallDescriptor(int parameter_count); | 149 CallDescriptor* GetJSCallDescriptor(int parameter_count); |
149 static CallDescriptor* GetJSCallDescriptor(int parameter_count, Zone* zone); | 150 static CallDescriptor* GetJSCallDescriptor(int parameter_count, Zone* zone); |
150 CallDescriptor* GetRuntimeCallDescriptor(Runtime::FunctionId function, | 151 CallDescriptor* GetRuntimeCallDescriptor(Runtime::FunctionId function, |
151 int parameter_count, | 152 int parameter_count, |
152 Operator::Property properties); | 153 Operator::Properties properties); |
153 static CallDescriptor* GetRuntimeCallDescriptor(Runtime::FunctionId function, | 154 static CallDescriptor* GetRuntimeCallDescriptor( |
154 int parameter_count, | 155 Runtime::FunctionId function, int parameter_count, |
155 Operator::Property properties, | 156 Operator::Properties properties, Zone* zone); |
156 Zone* zone); | |
157 | 157 |
158 CallDescriptor* GetStubCallDescriptor( | 158 CallDescriptor* GetStubCallDescriptor( |
159 CodeStubInterfaceDescriptor* descriptor, int stack_parameter_count = 0, | 159 CodeStubInterfaceDescriptor* descriptor, int stack_parameter_count = 0, |
160 CallDescriptor::Flags flags = CallDescriptor::kNoFlags); | 160 CallDescriptor::Flags flags = CallDescriptor::kNoFlags); |
161 static CallDescriptor* GetStubCallDescriptor( | 161 static CallDescriptor* GetStubCallDescriptor( |
162 CodeStubInterfaceDescriptor* descriptor, int stack_parameter_count, | 162 CodeStubInterfaceDescriptor* descriptor, int stack_parameter_count, |
163 CallDescriptor::Flags flags, Zone* zone); | 163 CallDescriptor::Flags flags, Zone* zone); |
164 | 164 |
165 // Creates a call descriptor for simplified C calls that is appropriate | 165 // Creates a call descriptor for simplified C calls that is appropriate |
166 // for the host platform. This simplified calling convention only supports | 166 // for the host platform. This simplified calling convention only supports |
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194 private: | 194 private: |
195 CompilationInfo* info_; | 195 CompilationInfo* info_; |
196 CallDescriptor* incoming_; | 196 CallDescriptor* incoming_; |
197 }; | 197 }; |
198 | 198 |
199 } // namespace compiler | 199 } // namespace compiler |
200 } // namespace internal | 200 } // namespace internal |
201 } // namespace v8 | 201 } // namespace v8 |
202 | 202 |
203 #endif // V8_COMPILER_LINKAGE_H_ | 203 #endif // V8_COMPILER_LINKAGE_H_ |
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