diff options
Diffstat (limited to 'Source/JavaScriptCore/assembler/ARMv7Assembler.h')
| -rw-r--r-- | Source/JavaScriptCore/assembler/ARMv7Assembler.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/assembler/ARMv7Assembler.h b/Source/JavaScriptCore/assembler/ARMv7Assembler.h index 81977e2bd..eef0ba8a7 100644 --- a/Source/JavaScriptCore/assembler/ARMv7Assembler.h +++ b/Source/JavaScriptCore/assembler/ARMv7Assembler.h @@ -1018,6 +1018,12 @@ public: else m_formatter.twoWordOp12Reg4Reg4Imm12(OP_LDR_imm_T3, rn, rt, imm.getUInt12()); } + + ALWAYS_INLINE void ldrWide8BitImmediate(RegisterID rt, RegisterID rn, uint8_t immediate) + { + ASSERT(rn != ARMRegisters::pc); + m_formatter.twoWordOp12Reg4Reg4Imm12(OP_LDR_imm_T3, rn, rt, immediate); + } ALWAYS_INLINE void ldrCompact(RegisterID rt, RegisterID rn, ARMThumbImmediate imm) { @@ -2117,6 +2123,46 @@ public: { return 6; } + + static void replaceWithLoad(void* instructionStart) + { + ASSERT(!(bitwise_cast<uintptr_t>(instructionStart) & 1)); + uint16_t* ptr = reinterpret_cast<uint16_t*>(instructionStart); + switch (ptr[0] & 0xFFF0) { + case OP_LDR_imm_T3: + break; + case OP_ADD_imm_T3: + ASSERT(!(ptr[1] & 0xF000)); + ptr[0] &= 0x000F; + ptr[0] |= OP_LDR_imm_T3; + ptr[1] |= (ptr[1] & 0x0F00) << 4; + ptr[1] &= 0xF0FF; + break; + default: + ASSERT_NOT_REACHED(); + } + cacheFlush(ptr, sizeof(uint16_t) * 2); + } + + static void replaceWithAddressComputation(void* instructionStart) + { + ASSERT(!(bitwise_cast<uintptr_t>(instructionStart) & 1)); + uint16_t* ptr = reinterpret_cast<uint16_t*>(instructionStart); + switch (ptr[0] & 0xFFF0) { + case OP_LDR_imm_T3: + ASSERT(!(ptr[1] & 0x0F00)); + ptr[0] &= 0x000F; + ptr[0] |= OP_ADD_imm_T3; + ptr[1] |= (ptr[1] & 0xF000) >> 4; + ptr[1] &= 0x0FFF; + break; + case OP_ADD_imm_T3: + break; + default: + ASSERT_NOT_REACHED(); + } + cacheFlush(ptr, sizeof(uint16_t) * 2); + } unsigned debugOffset() { return m_formatter.debugOffset(); } |