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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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171 Condition cond = al); | 171 Condition cond = al); |
172 void Bfc(Register dst, Register src, int lsb, int width, Condition cond = al); | 172 void Bfc(Register dst, Register src, int lsb, int width, Condition cond = al); |
173 void Usat(Register dst, int satpos, const Operand& src, | 173 void Usat(Register dst, int satpos, const Operand& src, |
174 Condition cond = al); | 174 Condition cond = al); |
175 | 175 |
176 void Call(Label* target); | 176 void Call(Label* target); |
177 | 177 |
178 // Register move. May do nothing if the registers are identical. | 178 // Register move. May do nothing if the registers are identical. |
179 void Move(Register dst, Handle<Object> value); | 179 void Move(Register dst, Handle<Object> value); |
180 void Move(Register dst, Register src, Condition cond = al); | 180 void Move(Register dst, Register src, Condition cond = al); |
181 void Move(DoubleRegister dst, DoubleRegister src); | 181 void Move(DwVfpRegister dst, DwVfpRegister src); |
182 | 182 |
183 // Load an object from the root table. | 183 // Load an object from the root table. |
184 void LoadRoot(Register destination, | 184 void LoadRoot(Register destination, |
185 Heap::RootListIndex index, | 185 Heap::RootListIndex index, |
186 Condition cond = al); | 186 Condition cond = al); |
187 // Store an object to the root table. | 187 // Store an object to the root table. |
188 void StoreRoot(Register source, | 188 void StoreRoot(Register source, |
189 Heap::RootListIndex index, | 189 Heap::RootListIndex index, |
190 Condition cond = al); | 190 Condition cond = al); |
191 | 191 |
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1050 void PrepareCallCFunction(int num_reg_arguments, | 1050 void PrepareCallCFunction(int num_reg_arguments, |
1051 int num_double_registers, | 1051 int num_double_registers, |
1052 Register scratch); | 1052 Register scratch); |
1053 void PrepareCallCFunction(int num_reg_arguments, | 1053 void PrepareCallCFunction(int num_reg_arguments, |
1054 Register scratch); | 1054 Register scratch); |
1055 | 1055 |
1056 // There are two ways of passing double arguments on ARM, depending on | 1056 // There are two ways of passing double arguments on ARM, depending on |
1057 // whether soft or hard floating point ABI is used. These functions | 1057 // whether soft or hard floating point ABI is used. These functions |
1058 // abstract parameter passing for the three different ways we call | 1058 // abstract parameter passing for the three different ways we call |
1059 // C functions from generated code. | 1059 // C functions from generated code. |
1060 void SetCallCDoubleArguments(DoubleRegister dreg); | 1060 void SetCallCDoubleArguments(DwVfpRegister dreg); |
1061 void SetCallCDoubleArguments(DoubleRegister dreg1, DoubleRegister dreg2); | 1061 void SetCallCDoubleArguments(DwVfpRegister dreg1, DwVfpRegister dreg2); |
1062 void SetCallCDoubleArguments(DoubleRegister dreg, Register reg); | 1062 void SetCallCDoubleArguments(DwVfpRegister dreg, Register reg); |
1063 | 1063 |
1064 // Calls a C function and cleans up the space for arguments allocated | 1064 // Calls a C function and cleans up the space for arguments allocated |
1065 // by PrepareCallCFunction. The called function is not allowed to trigger a | 1065 // by PrepareCallCFunction. The called function is not allowed to trigger a |
1066 // garbage collection, since that might move the code and invalidate the | 1066 // garbage collection, since that might move the code and invalidate the |
1067 // return address (unless this is somehow accounted for by the called | 1067 // return address (unless this is somehow accounted for by the called |
1068 // function). | 1068 // function). |
1069 void CallCFunction(ExternalReference function, int num_arguments); | 1069 void CallCFunction(ExternalReference function, int num_arguments); |
1070 void CallCFunction(Register function, int num_arguments); | 1070 void CallCFunction(Register function, int num_arguments); |
1071 void CallCFunction(ExternalReference function, | 1071 void CallCFunction(ExternalReference function, |
1072 int num_reg_arguments, | 1072 int num_reg_arguments, |
1073 int num_double_arguments); | 1073 int num_double_arguments); |
1074 void CallCFunction(Register function, | 1074 void CallCFunction(Register function, |
1075 int num_reg_arguments, | 1075 int num_reg_arguments, |
1076 int num_double_arguments); | 1076 int num_double_arguments); |
1077 | 1077 |
1078 void GetCFunctionDoubleResult(const DoubleRegister dst); | 1078 void GetCFunctionDoubleResult(const DwVfpRegister dst); |
1079 | 1079 |
1080 // Calls an API function. Allocates HandleScope, extracts returned value | 1080 // Calls an API function. Allocates HandleScope, extracts returned value |
1081 // from handle and propagates exceptions. Restores context. stack_space | 1081 // from handle and propagates exceptions. Restores context. stack_space |
1082 // - space to be unwound on exit (includes the call JS arguments space and | 1082 // - space to be unwound on exit (includes the call JS arguments space and |
1083 // the additional space allocated for the fast call). | 1083 // the additional space allocated for the fast call). |
1084 void CallApiFunctionAndReturn(ExternalReference function, int stack_space); | 1084 void CallApiFunctionAndReturn(ExternalReference function, int stack_space); |
1085 | 1085 |
1086 // Jump to a runtime routine. | 1086 // Jump to a runtime routine. |
1087 void JumpToExternalReference(const ExternalReference& builtin); | 1087 void JumpToExternalReference(const ExternalReference& builtin); |
1088 | 1088 |
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1281 | 1281 |
1282 // Get the location of a relocated constant (its address in the constant pool) | 1282 // Get the location of a relocated constant (its address in the constant pool) |
1283 // from its load site. | 1283 // from its load site. |
1284 void GetRelocatedValueLocation(Register ldr_location, | 1284 void GetRelocatedValueLocation(Register ldr_location, |
1285 Register result); | 1285 Register result); |
1286 | 1286 |
1287 | 1287 |
1288 void ClampUint8(Register output_reg, Register input_reg); | 1288 void ClampUint8(Register output_reg, Register input_reg); |
1289 | 1289 |
1290 void ClampDoubleToUint8(Register result_reg, | 1290 void ClampDoubleToUint8(Register result_reg, |
1291 DoubleRegister input_reg, | 1291 DwVfpRegister input_reg, |
1292 DoubleRegister temp_double_reg); | 1292 DwVfpRegister temp_double_reg); |
1293 | 1293 |
1294 | 1294 |
1295 void LoadInstanceDescriptors(Register map, Register descriptors); | 1295 void LoadInstanceDescriptors(Register map, Register descriptors); |
1296 void EnumLength(Register dst, Register map); | 1296 void EnumLength(Register dst, Register map); |
1297 void NumberOfOwnDescriptors(Register dst, Register map); | 1297 void NumberOfOwnDescriptors(Register dst, Register map); |
1298 | 1298 |
1299 template<typename Field> | 1299 template<typename Field> |
1300 void DecodeField(Register reg) { | 1300 void DecodeField(Register reg) { |
1301 static const int shift = Field::kShift; | 1301 static const int shift = Field::kShift; |
1302 static const int mask = (Field::kMask >> shift) << kSmiTagSize; | 1302 static const int mask = (Field::kMask >> shift) << kSmiTagSize; |
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1357 static int SafepointRegisterStackIndex(int reg_code); | 1357 static int SafepointRegisterStackIndex(int reg_code); |
1358 MemOperand SafepointRegisterSlot(Register reg); | 1358 MemOperand SafepointRegisterSlot(Register reg); |
1359 MemOperand SafepointRegistersAndDoublesSlot(Register reg); | 1359 MemOperand SafepointRegistersAndDoublesSlot(Register reg); |
1360 | 1360 |
1361 bool generating_stub_; | 1361 bool generating_stub_; |
1362 bool allow_stub_calls_; | 1362 bool allow_stub_calls_; |
1363 bool has_frame_; | 1363 bool has_frame_; |
1364 // This handle will be patched with the code object on installation. | 1364 // This handle will be patched with the code object on installation. |
1365 Handle<Object> code_object_; | 1365 Handle<Object> code_object_; |
1366 | 1366 |
1367 // Needs access to SafepointRegisterStackIndex for optimized frame | 1367 // Needs access to SafepointRegisterStackIndex for compiled frame |
1368 // traversal. | 1368 // traversal. |
1369 friend class OptimizedFrame; | 1369 friend class CompiledFrame; |
1370 }; | 1370 }; |
1371 | 1371 |
1372 | 1372 |
1373 // The code patcher is used to patch (typically) small parts of code e.g. for | 1373 // The code patcher is used to patch (typically) small parts of code e.g. for |
1374 // debugging and other types of instrumentation. When using the code patcher | 1374 // debugging and other types of instrumentation. When using the code patcher |
1375 // the exact number of bytes specified must be emitted. It is not legal to emit | 1375 // the exact number of bytes specified must be emitted. It is not legal to emit |
1376 // relocation information. If any of these constraints are violated it causes | 1376 // relocation information. If any of these constraints are violated it causes |
1377 // an assertion to fail. | 1377 // an assertion to fail. |
1378 class CodePatcher { | 1378 class CodePatcher { |
1379 public: | 1379 public: |
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1420 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__) | 1420 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__) |
1421 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm-> | 1421 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm-> |
1422 #else | 1422 #else |
1423 #define ACCESS_MASM(masm) masm-> | 1423 #define ACCESS_MASM(masm) masm-> |
1424 #endif | 1424 #endif |
1425 | 1425 |
1426 | 1426 |
1427 } } // namespace v8::internal | 1427 } } // namespace v8::internal |
1428 | 1428 |
1429 #endif // V8_ARM_MACRO_ASSEMBLER_ARM_H_ | 1429 #endif // V8_ARM_MACRO_ASSEMBLER_ARM_H_ |
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