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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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61 }; | 61 }; |
62 | 62 |
63 | 63 |
64 class StoreBufferOverflowStub: public PlatformCodeStub { | 64 class StoreBufferOverflowStub: public PlatformCodeStub { |
65 public: | 65 public: |
66 explicit StoreBufferOverflowStub(SaveFPRegsMode save_fp) | 66 explicit StoreBufferOverflowStub(SaveFPRegsMode save_fp) |
67 : save_doubles_(save_fp) {} | 67 : save_doubles_(save_fp) {} |
68 | 68 |
69 void Generate(MacroAssembler* masm); | 69 void Generate(MacroAssembler* masm); |
70 | 70 |
71 virtual bool IsPregenerated(Isolate* isolate) V8_OVERRIDE { return true; } | |
72 static void GenerateFixedRegStubsAheadOfTime(Isolate* isolate); | 71 static void GenerateFixedRegStubsAheadOfTime(Isolate* isolate); |
73 virtual bool SometimesSetsUpAFrame() { return false; } | 72 virtual bool SometimesSetsUpAFrame() { return false; } |
74 | 73 |
75 private: | 74 private: |
76 SaveFPRegsMode save_doubles_; | 75 SaveFPRegsMode save_doubles_; |
77 | 76 |
78 Major MajorKey() { return StoreBufferOverflow; } | 77 Major MajorKey() { return StoreBufferOverflow; } |
79 int MinorKey() { return (save_doubles_ == kSaveFPRegs) ? 1 : 0; } | 78 int MinorKey() { return (save_doubles_ == kSaveFPRegs) ? 1 : 0; } |
80 }; | 79 }; |
81 | 80 |
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224 // so you don't have to set up the frame. | 223 // so you don't have to set up the frame. |
225 class WriteInt32ToHeapNumberStub : public PlatformCodeStub { | 224 class WriteInt32ToHeapNumberStub : public PlatformCodeStub { |
226 public: | 225 public: |
227 WriteInt32ToHeapNumberStub(Register the_int, | 226 WriteInt32ToHeapNumberStub(Register the_int, |
228 Register the_heap_number, | 227 Register the_heap_number, |
229 Register scratch) | 228 Register scratch) |
230 : the_int_(the_int), | 229 : the_int_(the_int), |
231 the_heap_number_(the_heap_number), | 230 the_heap_number_(the_heap_number), |
232 scratch_(scratch) { } | 231 scratch_(scratch) { } |
233 | 232 |
234 virtual bool IsPregenerated(Isolate* isolate) V8_OVERRIDE; | |
235 static void GenerateFixedRegStubsAheadOfTime(Isolate* isolate); | 233 static void GenerateFixedRegStubsAheadOfTime(Isolate* isolate); |
236 | 234 |
237 private: | 235 private: |
238 Register the_int_; | 236 Register the_int_; |
239 Register the_heap_number_; | 237 Register the_heap_number_; |
240 Register scratch_; | 238 Register scratch_; |
241 | 239 |
242 // Minor key encoding in 16 bits. | 240 // Minor key encoding in 16 bits. |
243 class IntRegisterBits: public BitField<int, 0, 4> {}; | 241 class IntRegisterBits: public BitField<int, 0, 4> {}; |
244 class HeapNumberRegisterBits: public BitField<int, 4, 4> {}; | 242 class HeapNumberRegisterBits: public BitField<int, 4, 4> {}; |
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272 address, // An input reg. | 270 address, // An input reg. |
273 value) { // One scratch reg. | 271 value) { // One scratch reg. |
274 } | 272 } |
275 | 273 |
276 enum Mode { | 274 enum Mode { |
277 STORE_BUFFER_ONLY, | 275 STORE_BUFFER_ONLY, |
278 INCREMENTAL, | 276 INCREMENTAL, |
279 INCREMENTAL_COMPACTION | 277 INCREMENTAL_COMPACTION |
280 }; | 278 }; |
281 | 279 |
282 virtual bool IsPregenerated(Isolate* isolate) V8_OVERRIDE; | |
283 static void GenerateFixedRegStubsAheadOfTime(Isolate* isolate); | |
284 virtual bool SometimesSetsUpAFrame() { return false; } | 280 virtual bool SometimesSetsUpAFrame() { return false; } |
285 | 281 |
286 static void PatchBranchIntoNop(MacroAssembler* masm, int pos) { | 282 static void PatchBranchIntoNop(MacroAssembler* masm, int pos) { |
287 masm->instr_at_put(pos, (masm->instr_at(pos) & ~B27) | (B24 | B20)); | 283 masm->instr_at_put(pos, (masm->instr_at(pos) & ~B27) | (B24 | B20)); |
288 ASSERT(Assembler::IsTstImmediate(masm->instr_at(pos))); | 284 ASSERT(Assembler::IsTstImmediate(masm->instr_at(pos))); |
289 } | 285 } |
290 | 286 |
291 static void PatchNopIntoBranch(MacroAssembler* masm, int pos) { | 287 static void PatchNopIntoBranch(MacroAssembler* masm, int pos) { |
292 masm->instr_at_put(pos, (masm->instr_at(pos) & ~(B24 | B20)) | B27); | 288 masm->instr_at_put(pos, (masm->instr_at(pos) & ~(B24 | B20)) | B27); |
293 ASSERT(Assembler::IsBranch(masm->instr_at(pos))); | 289 ASSERT(Assembler::IsBranch(masm->instr_at(pos))); |
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504 | 500 |
505 class LookupModeBits: public BitField<LookupMode, 0, 1> {}; | 501 class LookupModeBits: public BitField<LookupMode, 0, 1> {}; |
506 | 502 |
507 LookupMode mode_; | 503 LookupMode mode_; |
508 }; | 504 }; |
509 | 505 |
510 | 506 |
511 } } // namespace v8::internal | 507 } } // namespace v8::internal |
512 | 508 |
513 #endif // V8_ARM_CODE_STUBS_ARM_H_ | 509 #endif // V8_ARM_CODE_STUBS_ARM_H_ |
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