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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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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531 // | 531 // |
532 // Even if the current stack pointer is not the system stack pointer (csp), | 532 // Even if the current stack pointer is not the system stack pointer (csp), |
533 // Push (and derived methods) will still modify the system stack pointer in | 533 // Push (and derived methods) will still modify the system stack pointer in |
534 // order to comply with ABI rules about accessing memory below the system | 534 // order to comply with ABI rules about accessing memory below the system |
535 // stack pointer. | 535 // stack pointer. |
536 // | 536 // |
537 // Other than the registers passed into Pop, the stack pointer and (possibly) | 537 // Other than the registers passed into Pop, the stack pointer and (possibly) |
538 // the system stack pointer, these methods do not modify any other registers. | 538 // the system stack pointer, these methods do not modify any other registers. |
539 void Push(const CPURegister& src0, const CPURegister& src1 = NoReg, | 539 void Push(const CPURegister& src0, const CPURegister& src1 = NoReg, |
540 const CPURegister& src2 = NoReg, const CPURegister& src3 = NoReg); | 540 const CPURegister& src2 = NoReg, const CPURegister& src3 = NoReg); |
| 541 void Push(const CPURegister& src0, const CPURegister& src1, |
| 542 const CPURegister& src2, const CPURegister& src3, |
| 543 const CPURegister& src4, const CPURegister& src5 = NoReg, |
| 544 const CPURegister& src6 = NoReg, const CPURegister& src7 = NoReg); |
541 void Pop(const CPURegister& dst0, const CPURegister& dst1 = NoReg, | 545 void Pop(const CPURegister& dst0, const CPURegister& dst1 = NoReg, |
542 const CPURegister& dst2 = NoReg, const CPURegister& dst3 = NoReg); | 546 const CPURegister& dst2 = NoReg, const CPURegister& dst3 = NoReg); |
543 | 547 |
544 // Alternative forms of Push and Pop, taking a RegList or CPURegList that | 548 // Alternative forms of Push and Pop, taking a RegList or CPURegList that |
545 // specifies the registers that are to be pushed or popped. Higher-numbered | 549 // specifies the registers that are to be pushed or popped. Higher-numbered |
546 // registers are associated with higher memory addresses (as in the A32 push | 550 // registers are associated with higher memory addresses (as in the A32 push |
547 // and pop instructions). | 551 // and pop instructions). |
548 // | 552 // |
549 // (Push|Pop)SizeRegList allow you to specify the register size as a | 553 // (Push|Pop)SizeRegList allow you to specify the register size as a |
550 // parameter. Only kXRegSizeInBits, kWRegSizeInBits, kDRegSizeInBits and | 554 // parameter. Only kXRegSizeInBits, kWRegSizeInBits, kDRegSizeInBits and |
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784 // Push the system stack pointer (csp) down to allow the same to be done to | 788 // Push the system stack pointer (csp) down to allow the same to be done to |
785 // the current stack pointer (according to StackPointer()). This must be | 789 // the current stack pointer (according to StackPointer()). This must be |
786 // called _before_ accessing the memory. | 790 // called _before_ accessing the memory. |
787 // | 791 // |
788 // This is necessary when pushing or otherwise adding things to the stack, to | 792 // This is necessary when pushing or otherwise adding things to the stack, to |
789 // satisfy the AAPCS64 constraint that the memory below the system stack | 793 // satisfy the AAPCS64 constraint that the memory below the system stack |
790 // pointer is not accessed. | 794 // pointer is not accessed. |
791 // | 795 // |
792 // This method asserts that StackPointer() is not csp, since the call does | 796 // This method asserts that StackPointer() is not csp, since the call does |
793 // not make sense in that context. | 797 // not make sense in that context. |
794 // | |
795 // TODO(jbramley): Currently, this method can only accept values of 'space' | |
796 // that can be encoded in one instruction. Refer to the implementation for | |
797 // details. | |
798 inline void BumpSystemStackPointer(const Operand& space); | 798 inline void BumpSystemStackPointer(const Operand& space); |
799 | 799 |
800 // Helpers ------------------------------------------------------------------ | 800 // Helpers ------------------------------------------------------------------ |
801 // Root register. | 801 // Root register. |
802 inline void InitializeRootRegister(); | 802 inline void InitializeRootRegister(); |
803 | 803 |
804 // Load an object from the root table. | 804 // Load an object from the root table. |
805 void LoadRoot(Register destination, | 805 void LoadRoot(Register destination, |
806 Heap::RootListIndex index); | 806 Heap::RootListIndex index); |
807 // Store an object to the root table. | 807 // Store an object to the root table. |
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2289 #error "Unsupported option" | 2289 #error "Unsupported option" |
2290 #define CODE_COVERAGE_STRINGIFY(x) #x | 2290 #define CODE_COVERAGE_STRINGIFY(x) #x |
2291 #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x) | 2291 #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x) |
2292 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__) | 2292 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__) |
2293 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm-> | 2293 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm-> |
2294 #else | 2294 #else |
2295 #define ACCESS_MASM(masm) masm-> | 2295 #define ACCESS_MASM(masm) masm-> |
2296 #endif | 2296 #endif |
2297 | 2297 |
2298 #endif // V8_A64_MACRO_ASSEMBLER_A64_H_ | 2298 #endif // V8_A64_MACRO_ASSEMBLER_A64_H_ |
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