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Diffstat (limited to 'JavaScriptCore/jit/JSInterfaceJIT.h')
| -rw-r--r-- | JavaScriptCore/jit/JSInterfaceJIT.h | 292 |
1 files changed, 0 insertions, 292 deletions
diff --git a/JavaScriptCore/jit/JSInterfaceJIT.h b/JavaScriptCore/jit/JSInterfaceJIT.h deleted file mode 100644 index 6453bab..0000000 --- a/JavaScriptCore/jit/JSInterfaceJIT.h +++ /dev/null @@ -1,292 +0,0 @@ -/* - * Copyright (C) 2010 Apple Inc. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS - * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef JSInterfaceJIT_h -#define JSInterfaceJIT_h - -#include "JITCode.h" -#include "JITStubs.h" -#include "JSImmediate.h" -#include "MacroAssembler.h" -#include "RegisterFile.h" -#include <wtf/AlwaysInline.h> -#include <wtf/Vector.h> - -namespace JSC { - class JSInterfaceJIT : public MacroAssembler { - 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; - - 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 timeoutCheckRegister = 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; - - 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; -#else -#error "JIT not supported on this platform." -#endif - - inline Jump emitLoadJSCell(unsigned virtualRegisterIndex, RegisterID payload); - inline Jump emitLoadInt32(unsigned virtualRegisterIndex, RegisterID dst); - inline Jump emitLoadDouble(unsigned virtualRegisterIndex, FPRegisterID dst, RegisterID scratch); - -#if USE(JSVALUE32_64) - inline Jump emitJumpIfNotJSCell(unsigned virtualRegisterIndex); - inline Address tagFor(unsigned index, RegisterID base = callFrameRegister); -#endif - -#if USE(JSVALUE64) - Jump emitJumpIfImmediateNumber(RegisterID reg); - Jump emitJumpIfNotImmediateNumber(RegisterID reg); - void emitFastArithImmToInt(RegisterID reg); -#endif - - inline Address payloadFor(unsigned index, RegisterID base = callFrameRegister); - inline Address addressFor(unsigned index, RegisterID base = callFrameRegister); - }; - - struct ThunkHelpers { - static unsigned stringImplDataOffset() { return StringImpl::dataOffset(); } - static unsigned jsStringLengthOffset() { return OBJECT_OFFSETOF(JSString, m_length); } - static unsigned jsStringValueOffset() { return OBJECT_OFFSETOF(JSString, m_value); } - }; - -#if USE(JSVALUE32_64) - inline JSInterfaceJIT::Jump JSInterfaceJIT::emitLoadJSCell(unsigned virtualRegisterIndex, RegisterID payload) - { - loadPtr(payloadFor(virtualRegisterIndex), payload); - return emitJumpIfNotJSCell(virtualRegisterIndex); - } - - inline JSInterfaceJIT::Jump JSInterfaceJIT::emitJumpIfNotJSCell(unsigned virtualRegisterIndex) - { - ASSERT(static_cast<int>(virtualRegisterIndex) < FirstConstantRegisterIndex); - return branch32(NotEqual, tagFor(virtualRegisterIndex), Imm32(JSValue::CellTag)); - } - - inline JSInterfaceJIT::Jump JSInterfaceJIT::emitLoadInt32(unsigned virtualRegisterIndex, RegisterID dst) - { - ASSERT(static_cast<int>(virtualRegisterIndex) < FirstConstantRegisterIndex); - loadPtr(payloadFor(virtualRegisterIndex), dst); - return branch32(NotEqual, tagFor(virtualRegisterIndex), Imm32(JSValue::Int32Tag)); - } - - inline JSInterfaceJIT::Address JSInterfaceJIT::tagFor(unsigned virtualRegisterIndex, RegisterID base) - { - ASSERT(static_cast<int>(virtualRegisterIndex) < FirstConstantRegisterIndex); - return Address(base, (virtualRegisterIndex * sizeof(Register)) + OBJECT_OFFSETOF(JSValue, u.asBits.tag)); - } - - inline JSInterfaceJIT::Address JSInterfaceJIT::payloadFor(unsigned virtualRegisterIndex, RegisterID base) - { - ASSERT(static_cast<int>(virtualRegisterIndex) < FirstConstantRegisterIndex); - return Address(base, (virtualRegisterIndex * sizeof(Register)) + OBJECT_OFFSETOF(JSValue, u.asBits.payload)); - } - - inline JSInterfaceJIT::Jump JSInterfaceJIT::emitLoadDouble(unsigned virtualRegisterIndex, FPRegisterID dst, RegisterID scratch) - { - ASSERT(static_cast<int>(virtualRegisterIndex) < FirstConstantRegisterIndex); - loadPtr(tagFor(virtualRegisterIndex), scratch); - Jump isDouble = branch32(Below, scratch, Imm32(JSValue::LowestTag)); - Jump notInt = branch32(NotEqual, scratch, Imm32(JSValue::Int32Tag)); - loadPtr(payloadFor(virtualRegisterIndex), scratch); - convertInt32ToDouble(scratch, dst); - Jump done = jump(); - isDouble.link(this); - loadDouble(addressFor(virtualRegisterIndex), dst); - done.link(this); - return notInt; - } -#endif - -#if USE(JSVALUE64) - ALWAYS_INLINE JSInterfaceJIT::Jump JSInterfaceJIT::emitJumpIfImmediateNumber(RegisterID reg) - { - return branchTestPtr(NonZero, reg, tagTypeNumberRegister); - } - ALWAYS_INLINE JSInterfaceJIT::Jump JSInterfaceJIT::emitJumpIfNotImmediateNumber(RegisterID reg) - { - return branchTestPtr(Zero, reg, tagTypeNumberRegister); - } - inline JSInterfaceJIT::Jump JSInterfaceJIT::emitLoadJSCell(unsigned virtualRegisterIndex, RegisterID dst) - { - loadPtr(addressFor(virtualRegisterIndex), dst); - return branchTestPtr(NonZero, dst, tagMaskRegister); - } - - inline JSInterfaceJIT::Jump JSInterfaceJIT::emitLoadInt32(unsigned virtualRegisterIndex, RegisterID dst) - { - loadPtr(addressFor(virtualRegisterIndex), dst); - Jump result = branchPtr(Below, dst, tagTypeNumberRegister); - zeroExtend32ToPtr(dst, dst); - return result; - } - - inline JSInterfaceJIT::Jump JSInterfaceJIT::emitLoadDouble(unsigned virtualRegisterIndex, FPRegisterID dst, RegisterID scratch) - { - loadPtr(addressFor(virtualRegisterIndex), scratch); - Jump notNumber = emitJumpIfNotImmediateNumber(scratch); - Jump notInt = branchPtr(Below, scratch, tagTypeNumberRegister); - convertInt32ToDouble(scratch, dst); - Jump done = jump(); - notInt.link(this); - addPtr(tagTypeNumberRegister, scratch); - movePtrToDouble(scratch, dst); - done.link(this); - return notNumber; - } - - ALWAYS_INLINE void JSInterfaceJIT::emitFastArithImmToInt(RegisterID) - { - } - -#endif - -#if USE(JSVALUE64) - inline JSInterfaceJIT::Address JSInterfaceJIT::payloadFor(unsigned virtualRegisterIndex, RegisterID base) - { - ASSERT(static_cast<int>(virtualRegisterIndex) < FirstConstantRegisterIndex); - return addressFor(virtualRegisterIndex, base); - } -#endif - - inline JSInterfaceJIT::Address JSInterfaceJIT::addressFor(unsigned virtualRegisterIndex, RegisterID base) - { - ASSERT(static_cast<int>(virtualRegisterIndex) < FirstConstantRegisterIndex); - return Address(base, (virtualRegisterIndex * sizeof(Register))); - } - -} - -#endif // JSInterfaceJIT_h |