diff options
Diffstat (limited to 'src/3rdparty/masm/yarr/YarrJIT.cpp')
-rw-r--r-- | src/3rdparty/masm/yarr/YarrJIT.cpp | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/src/3rdparty/masm/yarr/YarrJIT.cpp b/src/3rdparty/masm/yarr/YarrJIT.cpp index ce18b3ab4f..d8211ec4b2 100644 --- a/src/3rdparty/masm/yarr/YarrJIT.cpp +++ b/src/3rdparty/masm/yarr/YarrJIT.cpp @@ -53,6 +53,17 @@ class YarrGenerator : private MacroAssembler { static const RegisterID returnRegister = ARMRegisters::r0; static const RegisterID returnRegister2 = ARMRegisters::r1; +#elif CPU(ARM64) + static const RegisterID input = ARM64Registers::x0; + static const RegisterID index = ARM64Registers::x1; + static const RegisterID length = ARM64Registers::x2; + static const RegisterID output = ARM64Registers::x3; + + static const RegisterID regT0 = ARM64Registers::x4; + static const RegisterID regT1 = ARM64Registers::x5; + + static const RegisterID returnRegister = ARM64Registers::x0; + static const RegisterID returnRegister2 = ARM64Registers::x1; #elif CPU(MIPS) static const RegisterID input = MIPSRegisters::a0; static const RegisterID index = MIPSRegisters::a1; @@ -327,17 +338,31 @@ class YarrGenerator : private MacroAssembler { jump(Address(stackPointerRegister, frameLocation * sizeof(void*))); } + unsigned alignCallFrameSizeInBytes(unsigned callFrameSize) + { + callFrameSize *= sizeof(void*); + if (callFrameSize / sizeof(void*) != m_pattern.m_body->m_callFrameSize) + CRASH(); + // Originally, the code was: +// callFrameSize = (callFrameSize + 0x3f) & ~0x3f; + // However, 64 bytes is a bit surprising. The biggest "alignment" requirement is on Aarch64, where: + // "SP mod 16 = 0. The stack must be quad-word aligned." (IHI0055B_aapcs64.pdf) + callFrameSize = (callFrameSize + 0xf) & ~0xf; + if (!callFrameSize) + CRASH(); + return callFrameSize; + } void initCallFrame() { unsigned callFrameSize = m_pattern.m_body->m_callFrameSize; if (callFrameSize) - subPtr(Imm32(callFrameSize * sizeof(void*)), stackPointerRegister); + subPtr(Imm32(alignCallFrameSizeInBytes(callFrameSize)), stackPointerRegister); } void removeCallFrame() { unsigned callFrameSize = m_pattern.m_body->m_callFrameSize; if (callFrameSize) - addPtr(Imm32(callFrameSize * sizeof(void*)), stackPointerRegister); + addPtr(Imm32(alignCallFrameSizeInBytes(callFrameSize)), stackPointerRegister); } // Used to record subpatters, should only be called if compileMode is IncludeSubpatterns. @@ -2554,6 +2579,10 @@ class YarrGenerator : private MacroAssembler { if (compileMode == IncludeSubpatterns) loadPtr(Address(X86Registers::ebp, 2 * sizeof(void*)), output); #endif +#elif CPU(ARM64) + // The ABI doesn't guarantee the upper bits are zero on unsigned arguments, so clear them ourselves. + zeroExtend32ToPtr(index, index); + zeroExtend32ToPtr(length, length); #elif CPU(ARM) push(ARMRegisters::r4); push(ARMRegisters::r5); |