X-Git-Url: https://git.saurik.com/apple/javascriptcore.git/blobdiff_plain/6fe7ccc865dc7d7541b93c5bcaf6368d2c98a174..2656c66b5b30d5597e842a751c7f19ad6c2fe31a:/jit/JSInterfaceJIT.h diff --git a/jit/JSInterfaceJIT.h b/jit/JSInterfaceJIT.h index 05d1ce5..1e45f03 100644 --- a/jit/JSInterfaceJIT.h +++ b/jit/JSInterfaceJIT.h @@ -27,177 +27,34 @@ #define JSInterfaceJIT_h #include "BytecodeConventions.h" +#include "CCallHelpers.h" +#include "FPRInfo.h" +#include "GPRInfo.h" #include "JITCode.h" +#include "JITOperations.h" #include "JITStubs.h" +#include "JSCJSValue.h" +#include "JSStack.h" #include "JSString.h" -#include "JSValue.h" #include "MacroAssembler.h" -#include "RegisterFile.h" -#include #include +#if ENABLE(JIT) + namespace JSC { - class JSInterfaceJIT : public MacroAssembler { + class JSInterfaceJIT : public CCallHelpers, public GPRInfo, public FPRInfo { public: - // NOTES: - // - // regT0 has two special meanings. The return value from a stub - // call will always be in regT0, and by default (unless - // a register is specified) emitPutVirtualRegister() will store - // the value from regT0. - // - // regT3 is required to be callee-preserved. - // - // tempRegister2 is has no such dependencies. It is important that - // on x86/x86-64 it is ecx for performance reasons, since the - // MacroAssembler will need to plant register swaps if it is not - - // however the code will still function correctly. -#if CPU(X86_64) - static const RegisterID returnValueRegister = X86Registers::eax; - static const RegisterID cachedResultRegister = X86Registers::eax; - static const RegisterID firstArgumentRegister = X86Registers::edi; - -#if ENABLE(VALUE_PROFILER) - static const RegisterID bucketCounterRegister = X86Registers::r10; -#endif - - static const RegisterID timeoutCheckRegister = X86Registers::r12; - static const RegisterID callFrameRegister = X86Registers::r13; - static const RegisterID tagTypeNumberRegister = X86Registers::r14; - static const RegisterID tagMaskRegister = X86Registers::r15; - - static const RegisterID regT0 = X86Registers::eax; - static const RegisterID regT1 = X86Registers::edx; - static const RegisterID regT2 = X86Registers::ecx; - static const RegisterID regT3 = X86Registers::ebx; - - static const FPRegisterID fpRegT0 = X86Registers::xmm0; - static const FPRegisterID fpRegT1 = X86Registers::xmm1; - static const FPRegisterID fpRegT2 = X86Registers::xmm2; - static const FPRegisterID fpRegT3 = X86Registers::xmm3; -#elif CPU(X86) - static const RegisterID returnValueRegister = X86Registers::eax; - static const RegisterID cachedResultRegister = X86Registers::eax; - // On x86 we always use fastcall conventions = but on - // OS X if might make more sense to just use regparm. - static const RegisterID firstArgumentRegister = X86Registers::ecx; - - static const RegisterID bucketCounterRegister = X86Registers::esi; - static const RegisterID callFrameRegister = X86Registers::edi; - - static const RegisterID regT0 = X86Registers::eax; - static const RegisterID regT1 = X86Registers::edx; - static const RegisterID regT2 = X86Registers::ecx; - static const RegisterID regT3 = X86Registers::ebx; - - static const FPRegisterID fpRegT0 = X86Registers::xmm0; - static const FPRegisterID fpRegT1 = X86Registers::xmm1; - static const FPRegisterID fpRegT2 = X86Registers::xmm2; - static const FPRegisterID fpRegT3 = X86Registers::xmm3; -#elif CPU(ARM_THUMB2) - static const RegisterID returnValueRegister = ARMRegisters::r0; - static const RegisterID cachedResultRegister = ARMRegisters::r0; - static const RegisterID firstArgumentRegister = ARMRegisters::r0; - -#if ENABLE(VALUE_PROFILER) - static const RegisterID bucketCounterRegister = ARMRegisters::r7; -#endif - - static const RegisterID regT0 = ARMRegisters::r0; - static const RegisterID regT1 = ARMRegisters::r1; - static const RegisterID regT2 = ARMRegisters::r2; - static const RegisterID regT3 = ARMRegisters::r4; - - static const RegisterID callFrameRegister = ARMRegisters::r5; - static const RegisterID timeoutCheckRegister = ARMRegisters::r6; - - static const FPRegisterID fpRegT0 = ARMRegisters::d0; - static const FPRegisterID fpRegT1 = ARMRegisters::d1; - static const FPRegisterID fpRegT2 = ARMRegisters::d2; - static const FPRegisterID fpRegT3 = ARMRegisters::d3; -#elif CPU(ARM_TRADITIONAL) - static const RegisterID returnValueRegister = ARMRegisters::r0; - static const RegisterID cachedResultRegister = ARMRegisters::r0; - static const RegisterID firstArgumentRegister = ARMRegisters::r0; - - static const RegisterID timeoutCheckRegister = ARMRegisters::r5; - static const RegisterID callFrameRegister = ARMRegisters::r4; - - static const RegisterID regT0 = ARMRegisters::r0; - static const RegisterID regT1 = ARMRegisters::r1; - static const RegisterID regT2 = ARMRegisters::r2; - // Callee preserved - static const RegisterID regT3 = ARMRegisters::r7; - - static const RegisterID regS0 = ARMRegisters::S0; - // Callee preserved - static const RegisterID regS1 = ARMRegisters::S1; - - static const RegisterID regStackPtr = ARMRegisters::sp; - static const RegisterID regLink = ARMRegisters::lr; - - static const FPRegisterID fpRegT0 = ARMRegisters::d0; - static const FPRegisterID fpRegT1 = ARMRegisters::d1; - static const FPRegisterID fpRegT2 = ARMRegisters::d2; - static const FPRegisterID fpRegT3 = ARMRegisters::d3; -#elif CPU(MIPS) - static const RegisterID returnValueRegister = MIPSRegisters::v0; - static const RegisterID cachedResultRegister = MIPSRegisters::v0; - static const RegisterID firstArgumentRegister = MIPSRegisters::a0; - - // regT0 must be v0 for returning a 32-bit value. - static const RegisterID regT0 = MIPSRegisters::v0; - - // regT1 must be v1 for returning a pair of 32-bit value. - static const RegisterID regT1 = MIPSRegisters::v1; - - static const RegisterID regT2 = MIPSRegisters::t4; - - // regT3 must be saved in the callee, so use an S register. - static const RegisterID regT3 = MIPSRegisters::s2; - - static const RegisterID callFrameRegister = MIPSRegisters::s0; - static const RegisterID timeoutCheckRegister = MIPSRegisters::s1; - - static const FPRegisterID fpRegT0 = MIPSRegisters::f4; - static const FPRegisterID fpRegT1 = MIPSRegisters::f6; - static const FPRegisterID fpRegT2 = MIPSRegisters::f8; - static const FPRegisterID fpRegT3 = MIPSRegisters::f10; -#elif CPU(SH4) - static const RegisterID timeoutCheckRegister = SH4Registers::r8; - static const RegisterID callFrameRegister = SH4Registers::fp; - - static const RegisterID regT0 = SH4Registers::r0; - static const RegisterID regT1 = SH4Registers::r1; - static const RegisterID regT2 = SH4Registers::r2; - static const RegisterID regT3 = SH4Registers::r10; - static const RegisterID regT4 = SH4Registers::r4; - static const RegisterID regT5 = SH4Registers::r5; - static const RegisterID regT6 = SH4Registers::r6; - static const RegisterID regT7 = SH4Registers::r7; - static const RegisterID firstArgumentRegister =regT4; - - static const RegisterID returnValueRegister = SH4Registers::r0; - static const RegisterID cachedResultRegister = SH4Registers::r0; - - static const FPRegisterID fpRegT0 = SH4Registers::fr0; - static const FPRegisterID fpRegT1 = SH4Registers::fr2; - static const FPRegisterID fpRegT2 = SH4Registers::fr4; - static const FPRegisterID fpRegT3 = SH4Registers::fr6; - static const FPRegisterID fpRegT4 = SH4Registers::fr8; - static const FPRegisterID fpRegT5 = SH4Registers::fr10; - static const FPRegisterID fpRegT6 = SH4Registers::fr12; - static const FPRegisterID fpRegT7 = SH4Registers::fr14; -#else -#error "JIT not supported on this platform." -#endif + JSInterfaceJIT(VM* vm, CodeBlock* codeBlock = 0) + : CCallHelpers(vm, codeBlock) + { + } #if USE(JSVALUE32_64) // Can't just propogate JSValue::Int32Tag as visual studio doesn't like it static const unsigned Int32Tag = 0xffffffff; COMPILE_ASSERT(Int32Tag == JSValue::Int32Tag, Int32Tag_out_of_sync); #else - static const unsigned Int32Tag = TagTypeNumber >> 32; + static const unsigned Int32Tag = static_cast(TagTypeNumber >> 32); #endif inline Jump emitLoadJSCell(unsigned virtualRegisterIndex, RegisterID payload); inline Jump emitLoadInt32(unsigned virtualRegisterIndex, RegisterID dst); @@ -209,11 +66,20 @@ namespace JSC { #endif #if USE(JSVALUE64) + Jump emitJumpIfNotJSCell(RegisterID); Jump emitJumpIfImmediateNumber(RegisterID reg); Jump emitJumpIfNotImmediateNumber(RegisterID reg); void emitFastArithImmToInt(RegisterID reg); + void emitFastArithIntToImmNoCheck(RegisterID src, RegisterID dest); #endif + Jump emitJumpIfNotType(RegisterID baseReg, JSType); + + void emitGetFromCallFrameHeaderPtr(JSStack::CallFrameHeaderEntry, RegisterID to, RegisterID from = callFrameRegister); + void emitPutToCallFrameHeader(RegisterID from, JSStack::CallFrameHeaderEntry); + void emitPutImmediateToCallFrameHeader(void* value, JSStack::CallFrameHeaderEntry); + void emitPutCellToCallFrameHeader(RegisterID from, JSStack::CallFrameHeaderEntry); + inline Address payloadFor(int index, RegisterID base = callFrameRegister); inline Address intPayloadFor(int index, RegisterID base = callFrameRegister); inline Address intTagFor(int index, RegisterID base = callFrameRegister); @@ -221,9 +87,6 @@ namespace JSC { }; struct ThunkHelpers { - static unsigned stringImplFlagsOffset() { return StringImpl::flagsOffset(); } - static unsigned stringImpl8BitFlag() { return StringImpl::flagIs8Bit(); } - static unsigned stringImplDataOffset() { return StringImpl::dataOffset(); } static unsigned jsStringLengthOffset() { return OBJECT_OFFSETOF(JSString, m_length); } static unsigned jsStringValueOffset() { return OBJECT_OFFSETOF(JSString, m_value); } }; @@ -288,38 +151,43 @@ namespace JSC { #endif #if USE(JSVALUE64) + ALWAYS_INLINE JSInterfaceJIT::Jump JSInterfaceJIT::emitJumpIfNotJSCell(RegisterID reg) + { + return branchTest64(NonZero, reg, tagMaskRegister); + } + ALWAYS_INLINE JSInterfaceJIT::Jump JSInterfaceJIT::emitJumpIfImmediateNumber(RegisterID reg) { - return branchTestPtr(NonZero, reg, tagTypeNumberRegister); + return branchTest64(NonZero, reg, tagTypeNumberRegister); } ALWAYS_INLINE JSInterfaceJIT::Jump JSInterfaceJIT::emitJumpIfNotImmediateNumber(RegisterID reg) { - return branchTestPtr(Zero, reg, tagTypeNumberRegister); + return branchTest64(Zero, reg, tagTypeNumberRegister); } inline JSInterfaceJIT::Jump JSInterfaceJIT::emitLoadJSCell(unsigned virtualRegisterIndex, RegisterID dst) { - loadPtr(addressFor(virtualRegisterIndex), dst); - return branchTestPtr(NonZero, dst, tagMaskRegister); + load64(addressFor(virtualRegisterIndex), dst); + return branchTest64(NonZero, dst, tagMaskRegister); } inline JSInterfaceJIT::Jump JSInterfaceJIT::emitLoadInt32(unsigned virtualRegisterIndex, RegisterID dst) { - loadPtr(addressFor(virtualRegisterIndex), dst); - Jump result = branchPtr(Below, dst, tagTypeNumberRegister); + load64(addressFor(virtualRegisterIndex), dst); + Jump result = branch64(Below, dst, tagTypeNumberRegister); zeroExtend32ToPtr(dst, dst); return result; } inline JSInterfaceJIT::Jump JSInterfaceJIT::emitLoadDouble(unsigned virtualRegisterIndex, FPRegisterID dst, RegisterID scratch) { - loadPtr(addressFor(virtualRegisterIndex), scratch); + load64(addressFor(virtualRegisterIndex), scratch); Jump notNumber = emitJumpIfNotImmediateNumber(scratch); - Jump notInt = branchPtr(Below, scratch, tagTypeNumberRegister); + Jump notInt = branch64(Below, scratch, tagTypeNumberRegister); convertInt32ToDouble(scratch, dst); Jump done = jump(); notInt.link(this); - addPtr(tagTypeNumberRegister, scratch); - movePtrToDouble(scratch, dst); + add64(tagTypeNumberRegister, scratch); + move64ToDouble(scratch, dst); done.link(this); return notNumber; } @@ -328,6 +196,13 @@ namespace JSC { { } + // operand is int32_t, must have been zero-extended if register is 64-bit. + ALWAYS_INLINE void JSInterfaceJIT::emitFastArithIntToImmNoCheck(RegisterID src, RegisterID dest) + { + if (src != dest) + move(src, dest); + or64(tagTypeNumberRegister, dest); + } #endif #if USE(JSVALUE64) @@ -349,12 +224,48 @@ namespace JSC { } #endif + ALWAYS_INLINE JSInterfaceJIT::Jump JSInterfaceJIT::emitJumpIfNotType(RegisterID baseReg, JSType type) + { + return branch8(NotEqual, Address(baseReg, JSCell::typeInfoTypeOffset()), TrustedImm32(type)); + } + + ALWAYS_INLINE void JSInterfaceJIT::emitGetFromCallFrameHeaderPtr(JSStack::CallFrameHeaderEntry entry, RegisterID to, RegisterID from) + { + loadPtr(Address(from, entry * sizeof(Register)), to); + } + + ALWAYS_INLINE void JSInterfaceJIT::emitPutToCallFrameHeader(RegisterID from, JSStack::CallFrameHeaderEntry entry) + { +#if USE(JSVALUE32_64) + storePtr(from, payloadFor(entry, callFrameRegister)); +#else + store64(from, addressFor(entry, callFrameRegister)); +#endif + } + + ALWAYS_INLINE void JSInterfaceJIT::emitPutImmediateToCallFrameHeader(void* value, JSStack::CallFrameHeaderEntry entry) + { + storePtr(TrustedImmPtr(value), Address(callFrameRegister, entry * sizeof(Register))); + } + + ALWAYS_INLINE void JSInterfaceJIT::emitPutCellToCallFrameHeader(RegisterID from, JSStack::CallFrameHeaderEntry entry) + { +#if USE(JSVALUE32_64) + store32(TrustedImm32(JSValue::CellTag), tagFor(entry, callFrameRegister)); + store32(from, payloadFor(entry, callFrameRegister)); +#else + store64(from, addressFor(entry, callFrameRegister)); +#endif + } + inline JSInterfaceJIT::Address JSInterfaceJIT::addressFor(int virtualRegisterIndex, RegisterID base) { ASSERT(virtualRegisterIndex < FirstConstantRegisterIndex); return Address(base, (static_cast(virtualRegisterIndex) * sizeof(Register))); } -} +} // namespace JSC + +#endif // ENABLE(JIT) #endif // JSInterfaceJIT_h