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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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464 } | 464 } |
465 | 465 |
466 // If we have to call into C then we need to save and restore all caller- | 466 // If we have to call into C then we need to save and restore all caller- |
467 // saved registers that were not already preserved. The scratch registers | 467 // saved registers that were not already preserved. The scratch registers |
468 // will be restored by other means so we don't bother pushing them here. | 468 // will be restored by other means so we don't bother pushing them here. |
469 void SaveCallerSaveRegisters(MacroAssembler* masm, SaveFPRegsMode mode) { | 469 void SaveCallerSaveRegisters(MacroAssembler* masm, SaveFPRegsMode mode) { |
470 masm->stm(db_w, sp, (kCallerSaved | lr.bit()) & ~scratch1_.bit()); | 470 masm->stm(db_w, sp, (kCallerSaved | lr.bit()) & ~scratch1_.bit()); |
471 if (mode == kSaveFPRegs) { | 471 if (mode == kSaveFPRegs) { |
472 // Number of d-regs not known at snapshot time. | 472 // Number of d-regs not known at snapshot time. |
473 ASSERT(!Serializer::enabled()); | 473 ASSERT(!Serializer::enabled()); |
474 CpuFeatures::Scope scope(VFP2); | 474 CpuFeatureScope scope(masm, VFP2); |
475 masm->sub(sp, | 475 masm->sub(sp, |
476 sp, | 476 sp, |
477 Operand(kDoubleSize * (DwVfpRegister::NumRegisters() - 1))); | 477 Operand(kDoubleSize * (DwVfpRegister::NumRegisters() - 1))); |
478 // Save all VFP registers except d0. | 478 // Save all VFP registers except d0. |
479 // TODO(hans): We should probably save d0 too. And maybe use vstm. | 479 // TODO(hans): We should probably save d0 too. And maybe use vstm. |
480 for (int i = DwVfpRegister::NumRegisters() - 1; i > 0; i--) { | 480 for (int i = DwVfpRegister::NumRegisters() - 1; i > 0; i--) { |
481 DwVfpRegister reg = DwVfpRegister::from_code(i); | 481 DwVfpRegister reg = DwVfpRegister::from_code(i); |
482 masm->vstr(reg, MemOperand(sp, (i - 1) * kDoubleSize)); | 482 masm->vstr(reg, MemOperand(sp, (i - 1) * kDoubleSize)); |
483 } | 483 } |
484 } | 484 } |
485 } | 485 } |
486 | 486 |
487 inline void RestoreCallerSaveRegisters(MacroAssembler*masm, | 487 inline void RestoreCallerSaveRegisters(MacroAssembler*masm, |
488 SaveFPRegsMode mode) { | 488 SaveFPRegsMode mode) { |
489 if (mode == kSaveFPRegs) { | 489 if (mode == kSaveFPRegs) { |
490 // Number of d-regs not known at snapshot time. | 490 // Number of d-regs not known at snapshot time. |
491 ASSERT(!Serializer::enabled()); | 491 ASSERT(!Serializer::enabled()); |
492 CpuFeatures::Scope scope(VFP2); | 492 CpuFeatureScope scope(masm, VFP2); |
493 // Restore all VFP registers except d0. | 493 // Restore all VFP registers except d0. |
494 // TODO(hans): We should probably restore d0 too. And maybe use vldm. | 494 // TODO(hans): We should probably restore d0 too. And maybe use vldm. |
495 for (int i = DwVfpRegister::NumRegisters() - 1; i > 0; i--) { | 495 for (int i = DwVfpRegister::NumRegisters() - 1; i > 0; i--) { |
496 DwVfpRegister reg = DwVfpRegister::from_code(i); | 496 DwVfpRegister reg = DwVfpRegister::from_code(i); |
497 masm->vldr(reg, MemOperand(sp, (i - 1) * kDoubleSize)); | 497 masm->vldr(reg, MemOperand(sp, (i - 1) * kDoubleSize)); |
498 } | 498 } |
499 masm->add(sp, | 499 masm->add(sp, |
500 sp, | 500 sp, |
501 Operand(kDoubleSize * (DwVfpRegister::NumRegisters() - 1))); | 501 Operand(kDoubleSize * (DwVfpRegister::NumRegisters() - 1))); |
502 } | 502 } |
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791 | 791 |
792 class LookupModeBits: public BitField<LookupMode, 0, 1> {}; | 792 class LookupModeBits: public BitField<LookupMode, 0, 1> {}; |
793 | 793 |
794 LookupMode mode_; | 794 LookupMode mode_; |
795 }; | 795 }; |
796 | 796 |
797 | 797 |
798 } } // namespace v8::internal | 798 } } // namespace v8::internal |
799 | 799 |
800 #endif // V8_ARM_CODE_STUBS_ARM_H_ | 800 #endif // V8_ARM_CODE_STUBS_ARM_H_ |
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