| /* |
| * Copyright (C) 2009-2011 STMicroelectronics. All rights reserved. |
| * Copyright (C) 2008 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. ``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 |
| * 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 MacroAssemblerSH4_h |
| #define MacroAssemblerSH4_h |
| |
| #if ENABLE(ASSEMBLER) && CPU(SH4) |
| |
| #include "SH4Assembler.h" |
| #include "AbstractMacroAssembler.h" |
| #include <wtf/Assertions.h> |
| |
| namespace JSC { |
| |
| class MacroAssemblerSH4 : public AbstractMacroAssembler<SH4Assembler> { |
| public: |
| typedef SH4Assembler::FPRegisterID FPRegisterID; |
| |
| static const Scale ScalePtr = TimesFour; |
| static const FPRegisterID fscratch = SH4Registers::fr10; |
| static const RegisterID stackPointerRegister = SH4Registers::sp; |
| static const RegisterID linkRegister = SH4Registers::pr; |
| static const RegisterID scratchReg3 = SH4Registers::r13; |
| |
| static const int MaximumCompactPtrAlignedAddressOffset = 60; |
| |
| static bool isCompactPtrAlignedAddressOffset(ptrdiff_t value) |
| { |
| return (value >= 0) && (value <= MaximumCompactPtrAlignedAddressOffset); |
| } |
| |
| enum RelationalCondition { |
| Equal = SH4Assembler::EQ, |
| NotEqual = SH4Assembler::NE, |
| Above = SH4Assembler::HI, |
| AboveOrEqual = SH4Assembler::HS, |
| Below = SH4Assembler::LI, |
| BelowOrEqual = SH4Assembler::LS, |
| GreaterThan = SH4Assembler::GT, |
| GreaterThanOrEqual = SH4Assembler::GE, |
| LessThan = SH4Assembler::LT, |
| LessThanOrEqual = SH4Assembler::LE |
| }; |
| |
| enum ResultCondition { |
| Overflow = SH4Assembler::OF, |
| Signed = SH4Assembler::SI, |
| Zero = SH4Assembler::EQ, |
| NonZero = SH4Assembler::NE |
| }; |
| |
| enum DoubleCondition { |
| // These conditions will only evaluate to true if the comparison is ordered - i.e. neither operand is NaN. |
| DoubleEqual = SH4Assembler::EQ, |
| DoubleNotEqual = SH4Assembler::NE, |
| DoubleGreaterThan = SH4Assembler::GT, |
| DoubleGreaterThanOrEqual = SH4Assembler::GE, |
| DoubleLessThan = SH4Assembler::LT, |
| DoubleLessThanOrEqual = SH4Assembler::LE, |
| // If either operand is NaN, these conditions always evaluate to true. |
| DoubleEqualOrUnordered = SH4Assembler::EQU, |
| DoubleNotEqualOrUnordered = SH4Assembler::NEU, |
| DoubleGreaterThanOrUnordered = SH4Assembler::GTU, |
| DoubleGreaterThanOrEqualOrUnordered = SH4Assembler::GEU, |
| DoubleLessThanOrUnordered = SH4Assembler::LTU, |
| DoubleLessThanOrEqualOrUnordered = SH4Assembler::LEU, |
| }; |
| |
| RegisterID claimScratch() |
| { |
| return m_assembler.claimScratch(); |
| } |
| |
| void releaseScratch(RegisterID reg) |
| { |
| m_assembler.releaseScratch(reg); |
| } |
| |
| // Integer arithmetic operations |
| |
| void add32(RegisterID src, RegisterID dest) |
| { |
| m_assembler.addlRegReg(src, dest); |
| } |
| |
| void add32(TrustedImm32 imm, RegisterID dest) |
| { |
| if (m_assembler.isImmediate(imm.m_value)) { |
| m_assembler.addlImm8r(imm.m_value, dest); |
| return; |
| } |
| |
| RegisterID scr = claimScratch(); |
| m_assembler.loadConstant(imm.m_value, scr); |
| m_assembler.addlRegReg(scr, dest); |
| releaseScratch(scr); |
| } |
| |
| void add32(TrustedImm32 imm, RegisterID src, RegisterID dest) |
| { |
| if (src != dest) |
| m_assembler.movlRegReg(src, dest); |
| add32(imm, dest); |
| } |
| |
| void add32(TrustedImm32 imm, Address address) |
| { |
| RegisterID scr = claimScratch(); |
| load32(address, scr); |
| add32(imm, scr); |
| store32(scr, address); |
| releaseScratch(scr); |
| } |
| |
| void add32(Address src, RegisterID dest) |
| { |
| RegisterID scr = claimScratch(); |
| load32(src, scr); |
| m_assembler.addlRegReg(scr, dest); |
| releaseScratch(scr); |
| } |
| |
| void add32(AbsoluteAddress src, RegisterID dest) |
| { |
| RegisterID scr = claimScratch(); |
| load32(src.m_ptr, scr); |
| m_assembler.addlRegReg(scr, dest); |
| releaseScratch(scr); |
| } |
| |
| void and32(RegisterID src, RegisterID dest) |
| { |
| m_assembler.andlRegReg(src, dest); |
| } |
| |
| void and32(TrustedImm32 imm, RegisterID dest) |
| { |
| if ((imm.m_value <= 255) && (imm.m_value >= 0) && (dest == SH4Registers::r0)) { |
| m_assembler.andlImm8r(imm.m_value, dest); |
| return; |
| } |
| |
| RegisterID scr = claimScratch(); |
| m_assembler.loadConstant((imm.m_value), scr); |
| m_assembler.andlRegReg(scr, dest); |
| releaseScratch(scr); |
| } |
| |
| void and32(TrustedImm32 imm, RegisterID src, RegisterID dest) |
| { |
| if (src != dest) { |
| move(imm, dest); |
| and32(src, dest); |
| return; |
| } |
| |
| and32(imm, dest); |
| } |
| |
| void lshift32(RegisterID shiftamount, RegisterID dest) |
| { |
| if (shiftamount == SH4Registers::r0) |
| m_assembler.andlImm8r(0x1f, shiftamount); |
| else { |
| RegisterID scr = claimScratch(); |
| m_assembler.loadConstant(0x1f, scr); |
| m_assembler.andlRegReg(scr, shiftamount); |
| releaseScratch(scr); |
| } |
| m_assembler.shllRegReg(dest, shiftamount); |
| } |
| |
| void rshift32(int imm, RegisterID dest) |
| { |
| RegisterID scr = claimScratch(); |
| m_assembler.loadConstant(-imm, scr); |
| m_assembler.shaRegReg(dest, scr); |
| releaseScratch(scr); |
| } |
| |
| void lshift32(TrustedImm32 imm, RegisterID dest) |
| { |
| if (!imm.m_value) |
| return; |
| |
| if ((imm.m_value == 1) || (imm.m_value == 2) || (imm.m_value == 8) || (imm.m_value == 16)) { |
| m_assembler.shllImm8r(imm.m_value, dest); |
| return; |
| } |
| |
| RegisterID scr = claimScratch(); |
| m_assembler.loadConstant((imm.m_value & 0x1f) , scr); |
| m_assembler.shllRegReg(dest, scr); |
| releaseScratch(scr); |
| } |
| |
| void lshift32(RegisterID src, TrustedImm32 shiftamount, RegisterID dest) |
| { |
| if (src != dest) |
| move(src, dest); |
| |
| lshift32(shiftamount, dest); |
| } |
| |
| void mul32(RegisterID src, RegisterID dest) |
| { |
| m_assembler.imullRegReg(src, dest); |
| m_assembler.stsmacl(dest); |
| } |
| |
| void mul32(TrustedImm32 imm, RegisterID src, RegisterID dest) |
| { |
| RegisterID scr = claimScratch(); |
| move(imm, scr); |
| if (src != dest) |
| move(src, dest); |
| mul32(scr, dest); |
| releaseScratch(scr); |
| } |
| |
| void or32(RegisterID src, RegisterID dest) |
| { |
| m_assembler.orlRegReg(src, dest); |
| } |
| |
| void or32(TrustedImm32 imm, RegisterID dest) |
| { |
| if ((imm.m_value <= 255) && (imm.m_value >= 0) && (dest == SH4Registers::r0)) { |
| m_assembler.orlImm8r(imm.m_value, dest); |
| return; |
| } |
| |
| RegisterID scr = claimScratch(); |
| m_assembler.loadConstant(imm.m_value, scr); |
| m_assembler.orlRegReg(scr, dest); |
| releaseScratch(scr); |
| } |
| |
| void or32(RegisterID op1, RegisterID op2, RegisterID dest) |
| { |
| if (op1 == op2) |
| move(op1, dest); |
| else if (op1 == dest) |
| or32(op2, dest); |
| else { |
| move(op2, dest); |
| or32(op1, dest); |
| } |
| } |
| |
| |
| void or32(TrustedImm32 imm, RegisterID src, RegisterID dest) |
| { |
| if (src != dest) { |
| move(imm, dest); |
| or32(src, dest); |
| return; |
| } |
| |
| or32(imm, dest); |
| } |
| |
| void xor32(TrustedImm32 imm, RegisterID src, RegisterID dest) |
| { |
| if (src != dest) { |
| move(imm, dest); |
| xor32(src, dest); |
| return; |
| } |
| |
| xor32(imm, dest); |
| } |
| |
| void rshift32(RegisterID shiftamount, RegisterID dest) |
| { |
| if (shiftamount == SH4Registers::r0) |
| m_assembler.andlImm8r(0x1f, shiftamount); |
| else { |
| RegisterID scr = claimScratch(); |
| m_assembler.loadConstant(0x1f, scr); |
| m_assembler.andlRegReg(scr, shiftamount); |
| releaseScratch(scr); |
| } |
| m_assembler.neg(shiftamount, shiftamount); |
| m_assembler.shaRegReg(dest, shiftamount); |
| } |
| |
| void rshift32(TrustedImm32 imm, RegisterID dest) |
| { |
| if (imm.m_value & 0x1f) |
| rshift32(imm.m_value & 0x1f, dest); |
| } |
| |
| void rshift32(RegisterID src, TrustedImm32 imm, RegisterID dest) |
| { |
| if (src != dest) |
| move(src, dest); |
| rshift32(imm, dest); |
| } |
| |
| void sub32(RegisterID src, RegisterID dest) |
| { |
| m_assembler.sublRegReg(src, dest); |
| } |
| |
| void sub32(TrustedImm32 imm, AbsoluteAddress address, RegisterID scratchReg) |
| { |
| RegisterID result = claimScratch(); |
| |
| m_assembler.loadConstant(reinterpret_cast<uint32_t>(address.m_ptr), scratchReg); |
| m_assembler.movlMemReg(scratchReg, result); |
| |
| if (m_assembler.isImmediate(-imm.m_value)) |
| m_assembler.addlImm8r(-imm.m_value, result); |
| else { |
| m_assembler.loadConstant(imm.m_value, scratchReg3); |
| m_assembler.sublRegReg(scratchReg3, result); |
| } |
| |
| store32(result, scratchReg); |
| releaseScratch(result); |
| } |
| |
| void sub32(TrustedImm32 imm, AbsoluteAddress address) |
| { |
| RegisterID result = claimScratch(); |
| RegisterID scratchReg = claimScratch(); |
| |
| m_assembler.loadConstant(reinterpret_cast<uint32_t>(address.m_ptr), scratchReg); |
| m_assembler.movlMemReg(scratchReg, result); |
| |
| if (m_assembler.isImmediate(-imm.m_value)) |
| m_assembler.addlImm8r(-imm.m_value, result); |
| else { |
| m_assembler.loadConstant(imm.m_value, scratchReg3); |
| m_assembler.sublRegReg(scratchReg3, result); |
| } |
| |
| store32(result, scratchReg); |
| releaseScratch(result); |
| releaseScratch(scratchReg); |
| } |
| |
| void add32(TrustedImm32 imm, AbsoluteAddress address, RegisterID scratchReg) |
| { |
| RegisterID result = claimScratch(); |
| |
| m_assembler.loadConstant(reinterpret_cast<uint32_t>(address.m_ptr), scratchReg); |
| m_assembler.movlMemReg(scratchReg, result); |
| |
| if (m_assembler.isImmediate(imm.m_value)) |
| m_assembler.addlImm8r(imm.m_value, result); |
| else { |
| m_assembler.loadConstant(imm.m_value, scratchReg3); |
| m_assembler.addlRegReg(scratchReg3, result); |
| } |
| |
| store32(result, scratchReg); |
| releaseScratch(result); |
| } |
| |
| void add32(TrustedImm32 imm, AbsoluteAddress address) |
| { |
| RegisterID result = claimScratch(); |
| RegisterID scratchReg = claimScratch(); |
| |
| m_assembler.loadConstant(reinterpret_cast<uint32_t>(address.m_ptr), scratchReg); |
| m_assembler.movlMemReg(scratchReg, result); |
| |
| if (m_assembler.isImmediate(imm.m_value)) |
| m_assembler.addlImm8r(imm.m_value, result); |
| else { |
| m_assembler.loadConstant(imm.m_value, scratchReg3); |
| m_assembler.addlRegReg(scratchReg3, result); |
| } |
| |
| store32(result, scratchReg); |
| releaseScratch(result); |
| releaseScratch(scratchReg); |
| } |
| |
| void add64(TrustedImm32 imm, AbsoluteAddress address) |
| { |
| RegisterID scr1 = claimScratch(); |
| RegisterID scr2 = claimScratch(); |
| |
| // Add 32-bit LSB first. |
| m_assembler.loadConstant(reinterpret_cast<uint32_t>(address.m_ptr), scr1); |
| m_assembler.movlMemReg(scr1, scr1); // scr1 = 32-bit LSB of int64 @ address |
| m_assembler.loadConstant(imm.m_value, scr2); |
| m_assembler.clrt(); |
| m_assembler.addclRegReg(scr1, scr2); |
| m_assembler.loadConstant(reinterpret_cast<uint32_t>(address.m_ptr), scr1); |
| m_assembler.movlRegMem(scr2, scr1); // Update address with 32-bit LSB result. |
| |
| // Then add 32-bit MSB. |
| m_assembler.addlImm8r(4, scr1); |
| m_assembler.movlMemReg(scr1, scr1); // scr1 = 32-bit MSB of int64 @ address |
| m_assembler.movt(scr2); |
| if (imm.m_value < 0) |
| m_assembler.addlImm8r(-1, scr2); // Sign extend imm value if needed. |
| m_assembler.addvlRegReg(scr2, scr1); |
| m_assembler.loadConstant(reinterpret_cast<uint32_t>(address.m_ptr) + 4, scr2); |
| m_assembler.movlRegMem(scr1, scr2); // Update (address + 4) with 32-bit MSB result. |
| |
| releaseScratch(scr2); |
| releaseScratch(scr1); |
| } |
| |
| void sub32(TrustedImm32 imm, RegisterID dest) |
| { |
| if (m_assembler.isImmediate(-imm.m_value)) { |
| m_assembler.addlImm8r(-imm.m_value, dest); |
| return; |
| } |
| |
| RegisterID scr = claimScratch(); |
| m_assembler.loadConstant(imm.m_value, scr); |
| m_assembler.sublRegReg(scr, dest); |
| releaseScratch(scr); |
| } |
| |
| void sub32(Address src, RegisterID dest) |
| { |
| RegisterID scr = claimScratch(); |
| load32(src, scr); |
| m_assembler.sublRegReg(scr, dest); |
| releaseScratch(scr); |
| } |
| |
| void xor32(RegisterID src, RegisterID dest) |
| { |
| m_assembler.xorlRegReg(src, dest); |
| } |
| |
| void xor32(TrustedImm32 imm, RegisterID srcDest) |
| { |
| if (imm.m_value == -1) { |
| m_assembler.notlReg(srcDest, srcDest); |
| return; |
| } |
| |
| if ((srcDest != SH4Registers::r0) || (imm.m_value > 255) || (imm.m_value < 0)) { |
| RegisterID scr = claimScratch(); |
| m_assembler.loadConstant((imm.m_value), scr); |
| m_assembler.xorlRegReg(scr, srcDest); |
| releaseScratch(scr); |
| return; |
| } |
| |
| m_assembler.xorlImm8r(imm.m_value, srcDest); |
| } |
| |
| void compare32(int imm, RegisterID dst, RelationalCondition cond) |
| { |
| if (((cond == Equal) || (cond == NotEqual)) && (dst == SH4Registers::r0) && m_assembler.isImmediate(imm)) { |
| m_assembler.cmpEqImmR0(imm, dst); |
| return; |
| } |
| |
| RegisterID scr = claimScratch(); |
| m_assembler.loadConstant(imm, scr); |
| m_assembler.cmplRegReg(scr, dst, SH4Condition(cond)); |
| releaseScratch(scr); |
| } |
| |
| void compare32(int offset, RegisterID base, RegisterID left, RelationalCondition cond) |
| { |
| RegisterID scr = claimScratch(); |
| if (!offset) { |
| m_assembler.movlMemReg(base, scr); |
| m_assembler.cmplRegReg(scr, left, SH4Condition(cond)); |
| releaseScratch(scr); |
| return; |
| } |
| |
| if ((offset < 0) || (offset >= 64)) { |
| m_assembler.loadConstant(offset, scr); |
| m_assembler.addlRegReg(base, scr); |
| m_assembler.movlMemReg(scr, scr); |
| m_assembler.cmplRegReg(scr, left, SH4Condition(cond)); |
| releaseScratch(scr); |
| return; |
| } |
| |
| m_assembler.movlMemReg(offset >> 2, base, scr); |
| m_assembler.cmplRegReg(scr, left, SH4Condition(cond)); |
| releaseScratch(scr); |
| } |
| |
| void testImm(int imm, int offset, RegisterID base) |
| { |
| RegisterID scr = claimScratch(); |
| RegisterID scr1 = claimScratch(); |
| |
| if ((offset < 0) || (offset >= 64)) { |
| m_assembler.loadConstant(offset, scr); |
| m_assembler.addlRegReg(base, scr); |
| m_assembler.movlMemReg(scr, scr); |
| } else if (offset) |
| m_assembler.movlMemReg(offset >> 2, base, scr); |
| else |
| m_assembler.movlMemReg(base, scr); |
| if (m_assembler.isImmediate(imm)) |
| m_assembler.movImm8(imm, scr1); |
| else |
| m_assembler.loadConstant(imm, scr1); |
| |
| m_assembler.testlRegReg(scr, scr1); |
| releaseScratch(scr); |
| releaseScratch(scr1); |
| } |
| |
| void testlImm(int imm, RegisterID dst) |
| { |
| if ((dst == SH4Registers::r0) && (imm <= 255) && (imm >= 0)) { |
| m_assembler.testlImm8r(imm, dst); |
| return; |
| } |
| |
| RegisterID scr = claimScratch(); |
| m_assembler.loadConstant(imm, scr); |
| m_assembler.testlRegReg(scr, dst); |
| releaseScratch(scr); |
| } |
| |
| void compare32(RegisterID right, int offset, RegisterID base, RelationalCondition cond) |
| { |
| if (!offset) { |
| RegisterID scr = claimScratch(); |
| m_assembler.movlMemReg(base, scr); |
| m_assembler.cmplRegReg(right, scr, SH4Condition(cond)); |
| releaseScratch(scr); |
| return; |
| } |
| |
| if ((offset < 0) || (offset >= 64)) { |
| RegisterID scr = claimScratch(); |
| m_assembler.loadConstant(offset, scr); |
| m_assembler.addlRegReg(base, scr); |
| m_assembler.movlMemReg(scr, scr); |
| m_assembler.cmplRegReg(right, scr, SH4Condition(cond)); |
| releaseScratch(scr); |
| return; |
| } |
| |
| RegisterID scr = claimScratch(); |
| m_assembler.movlMemReg(offset >> 2, base, scr); |
| m_assembler.cmplRegReg(right, scr, SH4Condition(cond)); |
| releaseScratch(scr); |
| } |
| |
| void compare32(int imm, int offset, RegisterID base, RelationalCondition cond) |
| { |
| if (!offset) { |
| RegisterID scr = claimScratch(); |
| RegisterID scr1 = claimScratch(); |
| m_assembler.movlMemReg(base, scr); |
| m_assembler.loadConstant(imm, scr1); |
| m_assembler.cmplRegReg(scr1, scr, SH4Condition(cond)); |
| releaseScratch(scr1); |
| releaseScratch(scr); |
| return; |
| } |
| |
| if ((offset < 0) || (offset >= 64)) { |
| RegisterID scr = claimScratch(); |
| RegisterID scr1 = claimScratch(); |
| m_assembler.loadConstant(offset, scr); |
| m_assembler.addlRegReg(base, scr); |
| m_assembler.movlMemReg(scr, scr); |
| m_assembler.loadConstant(imm, scr1); |
| m_assembler.cmplRegReg(scr1, scr, SH4Condition(cond)); |
| releaseScratch(scr1); |
| releaseScratch(scr); |
| return; |
| } |
| |
| RegisterID scr = claimScratch(); |
| RegisterID scr1 = claimScratch(); |
| m_assembler.movlMemReg(offset >> 2, base, scr); |
| m_assembler.loadConstant(imm, scr1); |
| m_assembler.cmplRegReg(scr1, scr, SH4Condition(cond)); |
| releaseScratch(scr1); |
| releaseScratch(scr); |
| } |
| |
| // Memory access operation |
| |
| void load32(ImplicitAddress address, RegisterID dest) |
| { |
| load32(address.base, address.offset, dest); |
| } |
| |
| void load8(ImplicitAddress address, RegisterID dest) |
| { |
| load8(address.base, address.offset, dest); |
| } |
| |
| void load8(BaseIndex address, RegisterID dest) |
| { |
| RegisterID scr = claimScratch(); |
| move(address.index, scr); |
| lshift32(TrustedImm32(address.scale), scr); |
| add32(address.base, scr); |
| load8(scr, address.offset, dest); |
| releaseScratch(scr); |
| } |
| |
| void load8Signed(BaseIndex address, RegisterID dest) |
| { |
| RegisterID scr = claimScratch(); |
| move(address.index, scr); |
| lshift32(TrustedImm32(address.scale), scr); |
| add32(address.base, scr); |
| load8Signed(scr, address.offset, dest); |
| releaseScratch(scr); |
| } |
| |
| void load32(BaseIndex address, RegisterID dest) |
| { |
| RegisterID scr = claimScratch(); |
| move(address.index, scr); |
| lshift32(TrustedImm32(address.scale), scr); |
| add32(address.base, scr); |
| load32(scr, address.offset, dest); |
| releaseScratch(scr); |
| } |
| |
| void load32(const void* address, RegisterID dest) |
| { |
| m_assembler.loadConstant(reinterpret_cast<uint32_t>(const_cast<void*>(address)), dest); |
| m_assembler.movlMemReg(dest, dest); |
| } |
| |
| void load32(RegisterID base, int offset, RegisterID dest) |
| { |
| if (!offset) { |
| m_assembler.movlMemReg(base, dest); |
| return; |
| } |
| |
| if ((offset >= 0) && (offset < 64)) { |
| m_assembler.movlMemReg(offset >> 2, base, dest); |
| return; |
| } |
| |
| if ((dest == SH4Registers::r0) && (dest != base)) { |
| m_assembler.loadConstant((offset), dest); |
| m_assembler.movlR0mr(base, dest); |
| return; |
| } |
| |
| RegisterID scr; |
| if (dest == base) |
| scr = claimScratch(); |
| else |
| scr = dest; |
| m_assembler.loadConstant((offset), scr); |
| m_assembler.addlRegReg(base, scr); |
| m_assembler.movlMemReg(scr, dest); |
| |
| if (dest == base) |
| releaseScratch(scr); |
| } |
| |
| void load8Signed(RegisterID base, int offset, RegisterID dest) |
| { |
| if (!offset) { |
| m_assembler.movbMemReg(base, dest); |
| return; |
| } |
| |
| if ((offset > 0) && (offset < 64) && (dest == SH4Registers::r0)) { |
| m_assembler.movbMemReg(offset, base, dest); |
| return; |
| } |
| |
| if (base != dest) { |
| m_assembler.loadConstant((offset), dest); |
| m_assembler.addlRegReg(base, dest); |
| m_assembler.movbMemReg(dest, dest); |
| return; |
| } |
| |
| RegisterID scr = claimScratch(); |
| m_assembler.loadConstant((offset), scr); |
| m_assembler.addlRegReg(base, scr); |
| m_assembler.movbMemReg(scr, dest); |
| releaseScratch(scr); |
| } |
| |
| void load8(RegisterID base, int offset, RegisterID dest) |
| { |
| if (!offset) { |
| m_assembler.movbMemReg(base, dest); |
| m_assembler.extub(dest, dest); |
| return; |
| } |
| |
| if ((offset > 0) && (offset < 64) && (dest == SH4Registers::r0)) { |
| m_assembler.movbMemReg(offset, base, dest); |
| m_assembler.extub(dest, dest); |
| return; |
| } |
| |
| if (base != dest) { |
| m_assembler.loadConstant((offset), dest); |
| m_assembler.addlRegReg(base, dest); |
| m_assembler.movbMemReg(dest, dest); |
| m_assembler.extub(dest, dest); |
| return; |
| } |
| |
| RegisterID scr = claimScratch(); |
| m_assembler.loadConstant((offset), scr); |
| m_assembler.addlRegReg(base, scr); |
| m_assembler.movbMemReg(scr, dest); |
| m_assembler.extub(dest, dest); |
| releaseScratch(scr); |
| } |
| |
| void load32(RegisterID r0, RegisterID src, RegisterID dst) |
| { |
| ASSERT(r0 == SH4Registers::r0); |
| m_assembler.movlR0mr(src, dst); |
| } |
| |
| void load32(RegisterID src, RegisterID dst) |
| { |
| m_assembler.movlMemReg(src, dst); |
| } |
| |
| void load16(ImplicitAddress address, RegisterID dest) |
| { |
| if (!address.offset) { |
| m_assembler.movwMemReg(address.base, dest); |
| extuw(dest, dest); |
| return; |
| } |
| |
| if ((address.offset > 0) && (address.offset < 64) && (dest == SH4Registers::r0)) { |
| m_assembler.movwMemReg(address.offset, address.base, dest); |
| extuw(dest, dest); |
| return; |
| } |
| |
| if (address.base != dest) { |
| m_assembler.loadConstant((address.offset), dest); |
| m_assembler.addlRegReg(address.base, dest); |
| m_assembler.movwMemReg(dest, dest); |
| extuw(dest, dest); |
| return; |
| } |
| |
| RegisterID scr = claimScratch(); |
| m_assembler.loadConstant((address.offset), scr); |
| m_assembler.addlRegReg(address.base, scr); |
| m_assembler.movwMemReg(scr, dest); |
| extuw(dest, dest); |
| releaseScratch(scr); |
| } |
| |
| void load16Unaligned(BaseIndex address, RegisterID dest) |
| { |
| |
| RegisterID scr = claimScratch(); |
| RegisterID scr1 = claimScratch(); |
| |
| move(address.index, scr); |
| lshift32(TrustedImm32(address.scale), scr); |
| |
| if (address.offset) |
| add32(TrustedImm32(address.offset), scr); |
| |
| add32(address.base, scr); |
| load8(scr, scr1); |
| add32(TrustedImm32(1), scr); |
| load8(scr, dest); |
| m_assembler.shllImm8r(8, dest); |
| or32(scr1, dest); |
| |
| releaseScratch(scr); |
| releaseScratch(scr1); |
| } |
| |
| void load16(RegisterID src, RegisterID dest) |
| { |
| m_assembler.movwMemReg(src, dest); |
| extuw(dest, dest); |
| } |
| |
| void load16Signed(RegisterID src, RegisterID dest) |
| { |
| m_assembler.movwMemReg(src, dest); |
| } |
| |
| void load16(RegisterID r0, RegisterID src, RegisterID dest) |
| { |
| ASSERT(r0 == SH4Registers::r0); |
| m_assembler.movwR0mr(src, dest); |
| extuw(dest, dest); |
| } |
| |
| void load16Signed(RegisterID r0, RegisterID src, RegisterID dest) |
| { |
| ASSERT(r0 == SH4Registers::r0); |
| m_assembler.movwR0mr(src, dest); |
| } |
| |
| void load16(BaseIndex address, RegisterID dest) |
| { |
| RegisterID scr = claimScratch(); |
| |
| move(address.index, scr); |
| lshift32(TrustedImm32(address.scale), scr); |
| |
| if (address.offset) |
| add32(TrustedImm32(address.offset), scr); |
| if (address.base == SH4Registers::r0) |
| load16(address.base, scr, dest); |
| else { |
| add32(address.base, scr); |
| load16(scr, dest); |
| } |
| |
| releaseScratch(scr); |
| } |
| |
| void load16Signed(BaseIndex address, RegisterID dest) |
| { |
| RegisterID scr = claimScratch(); |
| |
| move(address.index, scr); |
| lshift32(TrustedImm32(address.scale), scr); |
| |
| if (address.offset) |
| add32(TrustedImm32(address.offset), scr); |
| if (address.base == SH4Registers::r0) |
| load16Signed(address.base, scr, dest); |
| else { |
| add32(address.base, scr); |
| load16Signed(scr, dest); |
| } |
| |
| releaseScratch(scr); |
| } |
| |
| void store8(RegisterID src, BaseIndex address) |
| { |
| RegisterID scr = claimScratch(); |
| |
| move(address.index, scr); |
| lshift32(TrustedImm32(address.scale), scr); |
| add32(address.base, scr); |
| |
| m_assembler.movbRegMem(src, scr); |
| |
| releaseScratch(scr); |
| } |
| |
| void store16(RegisterID src, BaseIndex address) |
| { |
| RegisterID scr = claimScratch(); |
| |
| move(address.index, scr); |
| lshift32(TrustedImm32(address.scale), scr); |
| add32(address.base, scr); |
| |
| m_assembler.movwRegMem(src, scr); |
| |
| releaseScratch(scr); |
| } |
| |
| void store32(RegisterID src, ImplicitAddress address) |
| { |
| RegisterID scr = claimScratch(); |
| store32(src, address.offset, address.base, scr); |
| releaseScratch(scr); |
| } |
| |
| void store32(RegisterID src, int offset, RegisterID base, RegisterID scr) |
| { |
| if (!offset) { |
| m_assembler.movlRegMem(src, base); |
| return; |
| } |
| |
| if ((offset >=0) && (offset < 64)) { |
| m_assembler.movlRegMem(src, offset >> 2, base); |
| return; |
| } |
| |
| m_assembler.loadConstant((offset), scr); |
| if (scr == SH4Registers::r0) { |
| m_assembler.movlRegMemr0(src, base); |
| return; |
| } |
| |
| m_assembler.addlRegReg(base, scr); |
| m_assembler.movlRegMem(src, scr); |
| } |
| |
| void store32(RegisterID src, RegisterID offset, RegisterID base) |
| { |
| ASSERT(offset == SH4Registers::r0); |
| m_assembler.movlRegMemr0(src, base); |
| } |
| |
| void store32(RegisterID src, RegisterID dst) |
| { |
| m_assembler.movlRegMem(src, dst); |
| } |
| |
| void store32(TrustedImm32 imm, ImplicitAddress address) |
| { |
| RegisterID scr = claimScratch(); |
| RegisterID scr1 = claimScratch(); |
| m_assembler.loadConstant((imm.m_value), scr); |
| store32(scr, address.offset, address.base, scr1); |
| releaseScratch(scr); |
| releaseScratch(scr1); |
| } |
| |
| void store32(RegisterID src, BaseIndex address) |
| { |
| RegisterID scr = claimScratch(); |
| |
| move(address.index, scr); |
| lshift32(TrustedImm32(address.scale), scr); |
| add32(address.base, scr); |
| store32(src, Address(scr, address.offset)); |
| |
| releaseScratch(scr); |
| } |
| |
| void store32(TrustedImm32 imm, void* address) |
| { |
| RegisterID scr = claimScratch(); |
| RegisterID scr1 = claimScratch(); |
| m_assembler.loadConstant((imm.m_value), scr); |
| m_assembler.loadConstant(reinterpret_cast<uint32_t>(address), scr1); |
| m_assembler.movlRegMem(scr, scr1); |
| releaseScratch(scr); |
| releaseScratch(scr1); |
| } |
| |
| void store32(RegisterID src, void* address) |
| { |
| RegisterID scr = claimScratch(); |
| m_assembler.loadConstant(reinterpret_cast<uint32_t>(address), scr); |
| m_assembler.movlRegMem(src, scr); |
| releaseScratch(scr); |
| } |
| |
| DataLabel32 load32WithAddressOffsetPatch(Address address, RegisterID dest) |
| { |
| RegisterID scr = claimScratch(); |
| DataLabel32 label(this); |
| m_assembler.loadConstantUnReusable(address.offset, scr); |
| m_assembler.addlRegReg(address.base, scr); |
| m_assembler.movlMemReg(scr, dest); |
| releaseScratch(scr); |
| return label; |
| } |
| |
| DataLabel32 store32WithAddressOffsetPatch(RegisterID src, Address address) |
| { |
| RegisterID scr = claimScratch(); |
| DataLabel32 label(this); |
| m_assembler.loadConstantUnReusable(address.offset, scr); |
| m_assembler.addlRegReg(address.base, scr); |
| m_assembler.movlRegMem(src, scr); |
| releaseScratch(scr); |
| return label; |
| } |
| |
| DataLabelCompact load32WithCompactAddressOffsetPatch(Address address, RegisterID dest) |
| { |
| DataLabelCompact dataLabel(this); |
| ASSERT(address.offset <= MaximumCompactPtrAlignedAddressOffset); |
| ASSERT(address.offset >= 0); |
| m_assembler.movlMemRegCompact(address.offset >> 2, address.base, dest); |
| return dataLabel; |
| } |
| |
| ConvertibleLoadLabel convertibleLoadPtr(Address address, RegisterID dest) |
| { |
| ConvertibleLoadLabel result(this); |
| |
| RegisterID scr = claimScratch(); |
| m_assembler.movImm8(address.offset, scr); |
| m_assembler.addlRegReg(address.base, scr); |
| m_assembler.movlMemReg(scr, dest); |
| releaseScratch(scr); |
| |
| return result; |
| } |
| |
| // Floating-point operations |
| |
| static bool supportsFloatingPoint() { return true; } |
| static bool supportsFloatingPointTruncate() { return true; } |
| static bool supportsFloatingPointSqrt() { return true; } |
| static bool supportsFloatingPointAbs() { return false; } |
| |
| void moveDoubleToInts(FPRegisterID src, RegisterID dest1, RegisterID dest2) |
| { |
| m_assembler.fldsfpul((FPRegisterID)(src + 1)); |
| m_assembler.stsfpulReg(dest1); |
| m_assembler.fldsfpul(src); |
| m_assembler.stsfpulReg(dest2); |
| } |
| |
| void moveIntsToDouble(RegisterID src1, RegisterID src2, FPRegisterID dest, FPRegisterID scratch) |
| { |
| UNUSED_PARAM(scratch); |
| m_assembler.ldsrmfpul(src1); |
| m_assembler.fstsfpul((FPRegisterID)(dest + 1)); |
| m_assembler.ldsrmfpul(src2); |
| m_assembler.fstsfpul(dest); |
| } |
| |
| void loadFloat(BaseIndex address, FPRegisterID dest) |
| { |
| RegisterID scr = claimScratch(); |
| |
| move(address.index, scr); |
| lshift32(TrustedImm32(address.scale), scr); |
| add32(address.base, scr); |
| if (address.offset) |
| add32(TrustedImm32(address.offset), scr); |
| |
| m_assembler.fmovsReadrm(scr, dest); |
| releaseScratch(scr); |
| } |
| |
| void loadDouble(BaseIndex address, FPRegisterID dest) |
| { |
| RegisterID scr = claimScratch(); |
| |
| move(address.index, scr); |
| lshift32(TrustedImm32(address.scale), scr); |
| add32(address.base, scr); |
| if (address.offset) |
| add32(TrustedImm32(address.offset), scr); |
| |
| m_assembler.fmovsReadrminc(scr, (FPRegisterID)(dest + 1)); |
| m_assembler.fmovsReadrm(scr, dest); |
| releaseScratch(scr); |
| } |
| |
| void loadDouble(ImplicitAddress address, FPRegisterID dest) |
| { |
| RegisterID scr = claimScratch(); |
| |
| m_assembler.loadConstant(address.offset, scr); |
| if (address.base == SH4Registers::r0) { |
| m_assembler.fmovsReadr0r(scr, (FPRegisterID)(dest + 1)); |
| m_assembler.addlImm8r(4, scr); |
| m_assembler.fmovsReadr0r(scr, dest); |
| releaseScratch(scr); |
| return; |
| } |
| |
| m_assembler.addlRegReg(address.base, scr); |
| m_assembler.fmovsReadrminc(scr, (FPRegisterID)(dest + 1)); |
| m_assembler.fmovsReadrm(scr, dest); |
| releaseScratch(scr); |
| } |
| |
| void loadDouble(const void* address, FPRegisterID dest) |
| { |
| RegisterID scr = claimScratch(); |
| m_assembler.loadConstant(reinterpret_cast<uint32_t>(address), scr); |
| m_assembler.fmovsReadrminc(scr, (FPRegisterID)(dest + 1)); |
| m_assembler.fmovsReadrm(scr, dest); |
| releaseScratch(scr); |
| } |
| |
| void storeFloat(FPRegisterID src, BaseIndex address) |
| { |
| RegisterID scr = claimScratch(); |
| |
| move(address.index, scr); |
| lshift32(TrustedImm32(address.scale), scr); |
| add32(address.base, scr); |
| if (address.offset) |
| add32(TrustedImm32(address.offset), scr); |
| |
| m_assembler.fmovsWriterm(src, scr); |
| |
| releaseScratch(scr); |
| } |
| |
| void storeDouble(FPRegisterID src, ImplicitAddress address) |
| { |
| RegisterID scr = claimScratch(); |
| m_assembler.loadConstant(address.offset, scr); |
| m_assembler.addlRegReg(address.base, scr); |
| m_assembler.fmovsWriterm((FPRegisterID)(src + 1), scr); |
| m_assembler.addlImm8r(4, scr); |
| m_assembler.fmovsWriterm(src, scr); |
| releaseScratch(scr); |
| } |
| |
| void storeDouble(FPRegisterID src, BaseIndex address) |
| { |
| RegisterID scr = claimScratch(); |
| |
| move(address.index, scr); |
| lshift32(TrustedImm32(address.scale), scr); |
| add32(address.base, scr); |
| if (address.offset) |
| add32(TrustedImm32(address.offset), scr); |
| |
| m_assembler.fmovsWriterm((FPRegisterID)(src + 1), scr); |
| m_assembler.addlImm8r(4, scr); |
| m_assembler.fmovsWriterm(src, scr); |
| |
| releaseScratch(scr); |
| } |
| |
| void addDouble(FPRegisterID op1, FPRegisterID op2, FPRegisterID dest) |
| { |
| if (op1 == dest) |
| m_assembler.daddRegReg(op2, dest); |
| else { |
| m_assembler.dmovRegReg(op1, dest); |
| m_assembler.daddRegReg(op2, dest); |
| } |
| } |
| |
| void addDouble(FPRegisterID src, FPRegisterID dest) |
| { |
| m_assembler.daddRegReg(src, dest); |
| } |
| |
| void addDouble(AbsoluteAddress address, FPRegisterID dest) |
| { |
| loadDouble(address.m_ptr, fscratch); |
| addDouble(fscratch, dest); |
| } |
| |
| void addDouble(Address address, FPRegisterID dest) |
| { |
| loadDouble(address, fscratch); |
| addDouble(fscratch, dest); |
| } |
| |
| void subDouble(FPRegisterID src, FPRegisterID dest) |
| { |
| m_assembler.dsubRegReg(src, dest); |
| } |
| |
| void subDouble(Address address, FPRegisterID dest) |
| { |
| loadDouble(address, fscratch); |
| subDouble(fscratch, dest); |
| } |
| |
| void mulDouble(FPRegisterID src, FPRegisterID dest) |
| { |
| m_assembler.dmulRegReg(src, dest); |
| } |
| |
| void mulDouble(Address address, FPRegisterID dest) |
| { |
| loadDouble(address, fscratch); |
| mulDouble(fscratch, dest); |
| } |
| |
| void divDouble(FPRegisterID src, FPRegisterID dest) |
| { |
| m_assembler.ddivRegReg(src, dest); |
| } |
| |
| void convertFloatToDouble(FPRegisterID src, FPRegisterID dst) |
| { |
| m_assembler.fldsfpul(src); |
| m_assembler.dcnvsd(dst); |
| } |
| |
| void convertDoubleToFloat(FPRegisterID src, FPRegisterID dst) |
| { |
| m_assembler.dcnvds(src); |
| m_assembler.fstsfpul(dst); |
| } |
| |
| void convertInt32ToDouble(RegisterID src, FPRegisterID dest) |
| { |
| m_assembler.ldsrmfpul(src); |
| m_assembler.floatfpulDreg(dest); |
| } |
| |
| void convertInt32ToDouble(AbsoluteAddress src, FPRegisterID dest) |
| { |
| RegisterID scr = claimScratch(); |
| m_assembler.loadConstant(reinterpret_cast<uint32_t>(src.m_ptr), scr); |
| convertInt32ToDouble(scr, dest); |
| releaseScratch(scr); |
| } |
| |
| void convertInt32ToDouble(Address src, FPRegisterID dest) |
| { |
| RegisterID scr = claimScratch(); |
| load32(src, scr); |
| convertInt32ToDouble(scr, dest); |
| releaseScratch(scr); |
| } |
| |
| void load32WithUnalignedHalfWords(BaseIndex address, RegisterID dest) |
| { |
| RegisterID scr = claimScratch(); |
| RegisterID scr1 = claimScratch(); |
| Jump m_jump; |
| JumpList end; |
| |
| if (dest != SH4Registers::r0) |
| move(SH4Registers::r0, scr1); |
| |
| move(address.index, scr); |
| lshift32(TrustedImm32(address.scale), scr); |
| add32(address.base, scr); |
| |
| if (address.offset) |
| add32(TrustedImm32(address.offset), scr); |
| |
| m_assembler.ensureSpace(m_assembler.maxInstructionSize + 68, sizeof(uint32_t)); |
| move(scr, SH4Registers::r0); |
| m_assembler.andlImm8r(0x3, SH4Registers::r0); |
| m_assembler.cmpEqImmR0(0x0, SH4Registers::r0); |
| m_jump = Jump(m_assembler.jne(), SH4Assembler::JumpNear); |
| if (dest != SH4Registers::r0) |
| move(scr1, SH4Registers::r0); |
| |
| load32(scr, dest); |
| end.append(Jump(m_assembler.bra(), SH4Assembler::JumpNear)); |
| m_assembler.nop(); |
| m_jump.link(this); |
| m_assembler.andlImm8r(0x1, SH4Registers::r0); |
| m_assembler.cmpEqImmR0(0x0, SH4Registers::r0); |
| |
| if (dest != SH4Registers::r0) |
| move(scr1, SH4Registers::r0); |
| |
| m_jump = Jump(m_assembler.jne(), SH4Assembler::JumpNear); |
| load16(scr, scr1); |
| add32(TrustedImm32(2), scr); |
| load16(scr, dest); |
| m_assembler.shllImm8r(16, dest); |
| or32(scr1, dest); |
| end.append(Jump(m_assembler.bra(), SH4Assembler::JumpNear)); |
| m_assembler.nop(); |
| m_jump.link(this); |
| load8(scr, scr1); |
| add32(TrustedImm32(1), scr); |
| load16(scr, dest); |
| m_assembler.shllImm8r(8, dest); |
| or32(dest, scr1); |
| add32(TrustedImm32(2), scr); |
| load8(scr, dest); |
| m_assembler.shllImm8r(8, dest); |
| m_assembler.shllImm8r(16, dest); |
| or32(scr1, dest); |
| end.link(this); |
| |
| releaseScratch(scr); |
| releaseScratch(scr1); |
| } |
| |
| Jump branch32WithUnalignedHalfWords(RelationalCondition cond, BaseIndex left, TrustedImm32 right) |
| { |
| RegisterID scr = scratchReg3; |
| load32WithUnalignedHalfWords(left, scr); |
| if (((cond == Equal) || (cond == NotEqual)) && !right.m_value) |
| m_assembler.testlRegReg(scr, scr); |
| else |
| compare32(right.m_value, scr, cond); |
| |
| if (cond == NotEqual) |
| return branchFalse(); |
| return branchTrue(); |
| } |
| |
| Jump branchDoubleNonZero(FPRegisterID reg, FPRegisterID scratch) |
| { |
| m_assembler.movImm8(0, scratchReg3); |
| convertInt32ToDouble(scratchReg3, scratch); |
| return branchDouble(DoubleNotEqual, reg, scratch); |
| } |
| |
| Jump branchDoubleZeroOrNaN(FPRegisterID reg, FPRegisterID scratch) |
| { |
| m_assembler.movImm8(0, scratchReg3); |
| convertInt32ToDouble(scratchReg3, scratch); |
| return branchDouble(DoubleEqualOrUnordered, reg, scratch); |
| } |
| |
| Jump branchDouble(DoubleCondition cond, FPRegisterID left, FPRegisterID right) |
| { |
| if (cond == DoubleEqual) { |
| m_assembler.dcmppeq(right, left); |
| return branchTrue(); |
| } |
| |
| if (cond == DoubleNotEqual) { |
| RegisterID scr = claimScratch(); |
| JumpList end; |
| m_assembler.loadConstant(0x7fbfffff, scratchReg3); |
| m_assembler.dcnvds(right); |
| m_assembler.stsfpulReg(scr); |
| m_assembler.cmplRegReg(scratchReg3, scr, SH4Condition(Equal)); |
| m_assembler.ensureSpace(m_assembler.maxInstructionSize + 22, sizeof(uint32_t)); |
| end.append(Jump(m_assembler.je(), SH4Assembler::JumpNear)); |
| m_assembler.dcnvds(left); |
| m_assembler.stsfpulReg(scr); |
| m_assembler.cmplRegReg(scratchReg3, scr, SH4Condition(Equal)); |
| end.append(Jump(m_assembler.je(), SH4Assembler::JumpNear)); |
| m_assembler.dcmppeq(right, left); |
| releaseScratch(scr); |
| Jump m_jump = branchFalse(); |
| end.link(this); |
| return m_jump; |
| } |
| |
| if (cond == DoubleGreaterThan) { |
| m_assembler.dcmppgt(right, left); |
| return branchTrue(); |
| } |
| |
| if (cond == DoubleGreaterThanOrEqual) { |
| m_assembler.dcmppgt(left, right); |
| return branchFalse(); |
| } |
| |
| if (cond == DoubleLessThan) { |
| m_assembler.dcmppgt(left, right); |
| return branchTrue(); |
| } |
| |
| if (cond == DoubleLessThanOrEqual) { |
| m_assembler.dcmppgt(right, left); |
| return branchFalse(); |
| } |
| |
| if (cond == DoubleEqualOrUnordered) { |
| RegisterID scr = claimScratch(); |
| JumpList end; |
| m_assembler.loadConstant(0x7fbfffff, scratchReg3); |
| m_assembler.dcnvds(right); |
| m_assembler.stsfpulReg(scr); |
| m_assembler.cmplRegReg(scratchReg3, scr, SH4Condition(Equal)); |
| m_assembler.ensureSpace(m_assembler.maxInstructionSize + 22, sizeof(uint32_t)); |
| end.append(Jump(m_assembler.je(), SH4Assembler::JumpNear)); |
| m_assembler.dcnvds(left); |
| m_assembler.stsfpulReg(scr); |
| m_assembler.cmplRegReg(scratchReg3, scr, SH4Condition(Equal)); |
| end.append(Jump(m_assembler.je(), SH4Assembler::JumpNear)); |
| m_assembler.dcmppeq(left, right); |
| Jump m_jump = Jump(m_assembler.je()); |
| end.link(this); |
| m_assembler.extraInstrForBranch(scr); |
| releaseScratch(scr); |
| return m_jump; |
| } |
| |
| if (cond == DoubleGreaterThanOrUnordered) { |
| RegisterID scr = claimScratch(); |
| JumpList end; |
| m_assembler.loadConstant(0x7fbfffff, scratchReg3); |
| m_assembler.dcnvds(right); |
| m_assembler.stsfpulReg(scr); |
| m_assembler.cmplRegReg(scratchReg3, scr, SH4Condition(Equal)); |
| m_assembler.ensureSpace(m_assembler.maxInstructionSize + 22, sizeof(uint32_t)); |
| end.append(Jump(m_assembler.je(), SH4Assembler::JumpNear)); |
| m_assembler.dcnvds(left); |
| m_assembler.stsfpulReg(scr); |
| m_assembler.cmplRegReg(scratchReg3, scr, SH4Condition(Equal)); |
| end.append(Jump(m_assembler.je(), SH4Assembler::JumpNear)); |
| m_assembler.dcmppgt(right, left); |
| Jump m_jump = Jump(m_assembler.je()); |
| end.link(this); |
| m_assembler.extraInstrForBranch(scr); |
| releaseScratch(scr); |
| return m_jump; |
| } |
| |
| if (cond == DoubleGreaterThanOrEqualOrUnordered) { |
| RegisterID scr = claimScratch(); |
| JumpList end; |
| m_assembler.loadConstant(0x7fbfffff, scratchReg3); |
| m_assembler.dcnvds(right); |
| m_assembler.stsfpulReg(scr); |
| m_assembler.cmplRegReg(scratchReg3, scr, SH4Condition(Equal)); |
| m_assembler.ensureSpace(m_assembler.maxInstructionSize + 22, sizeof(uint32_t)); |
| end.append(Jump(m_assembler.je(), SH4Assembler::JumpNear)); |
| m_assembler.dcnvds(left); |
| m_assembler.stsfpulReg(scr); |
| m_assembler.cmplRegReg(scratchReg3, scr, SH4Condition(Equal)); |
| end.append(Jump(m_assembler.je(), SH4Assembler::JumpNear)); |
| m_assembler.dcmppgt(left, right); |
| Jump m_jump = Jump(m_assembler.jne()); |
| end.link(this); |
| m_assembler.extraInstrForBranch(scr); |
| releaseScratch(scr); |
| return m_jump; |
| } |
| |
| if (cond == DoubleLessThanOrUnordered) { |
| RegisterID scr = claimScratch(); |
| JumpList end; |
| m_assembler.loadConstant(0x7fbfffff, scratchReg3); |
| m_assembler.dcnvds(right); |
| m_assembler.stsfpulReg(scr); |
| m_assembler.cmplRegReg(scratchReg3, scr, SH4Condition(Equal)); |
| m_assembler.ensureSpace(m_assembler.maxInstructionSize + 22, sizeof(uint32_t)); |
| end.append(Jump(m_assembler.je(), SH4Assembler::JumpNear)); |
| m_assembler.dcnvds(left); |
| m_assembler.stsfpulReg(scr); |
| m_assembler.cmplRegReg(scratchReg3, scr, SH4Condition(Equal)); |
| end.append(Jump(m_assembler.je(), SH4Assembler::JumpNear)); |
| m_assembler.dcmppgt(left, right); |
| Jump m_jump = Jump(m_assembler.je()); |
| end.link(this); |
| m_assembler.extraInstrForBranch(scr); |
| releaseScratch(scr); |
| return m_jump; |
| } |
| |
| if (cond == DoubleLessThanOrEqualOrUnordered) { |
| RegisterID scr = claimScratch(); |
| JumpList end; |
| m_assembler.loadConstant(0x7fbfffff, scratchReg3); |
| m_assembler.dcnvds(right); |
| m_assembler.stsfpulReg(scr); |
| m_assembler.cmplRegReg(scratchReg3, scr, SH4Condition(Equal)); |
| m_assembler.ensureSpace(m_assembler.maxInstructionSize + 22, sizeof(uint32_t)); |
| end.append(Jump(m_assembler.je(), SH4Assembler::JumpNear)); |
| m_assembler.dcnvds(left); |
| m_assembler.stsfpulReg(scr); |
| m_assembler.cmplRegReg(scratchReg3, scr, SH4Condition(Equal)); |
| end.append(Jump(m_assembler.je(), SH4Assembler::JumpNear)); |
| m_assembler.dcmppgt(right, left); |
| Jump m_jump = Jump(m_assembler.jne()); |
| end.link(this); |
| m_assembler.extraInstrForBranch(scr); |
| releaseScratch(scr); |
| return m_jump; |
| } |
| |
| ASSERT(cond == DoubleNotEqualOrUnordered); |
| RegisterID scr = claimScratch(); |
| JumpList end; |
| m_assembler.loadConstant(0x7fbfffff, scratchReg3); |
| m_assembler.dcnvds(right); |
| m_assembler.stsfpulReg(scr); |
| m_assembler.cmplRegReg(scratchReg3, scr, SH4Condition(Equal)); |
| m_assembler.ensureSpace(m_assembler.maxInstructionSize + 22, sizeof(uint32_t)); |
| end.append(Jump(m_assembler.je(), SH4Assembler::JumpNear)); |
| m_assembler.dcnvds(left); |
| m_assembler.stsfpulReg(scr); |
| m_assembler.cmplRegReg(scratchReg3, scr, SH4Condition(Equal)); |
| end.append(Jump(m_assembler.je(), SH4Assembler::JumpNear)); |
| m_assembler.dcmppeq(right, left); |
| Jump m_jump = Jump(m_assembler.jne()); |
| end.link(this); |
| m_assembler.extraInstrForBranch(scr); |
| releaseScratch(scr); |
| return m_jump; |
| } |
| |
| Jump branchTrue() |
| { |
| m_assembler.ensureSpace(m_assembler.maxInstructionSize + 6, sizeof(uint32_t)); |
| Jump m_jump = Jump(m_assembler.je()); |
| m_assembler.extraInstrForBranch(scratchReg3); |
| return m_jump; |
| } |
| |
| Jump branchFalse() |
| { |
| m_assembler.ensureSpace(m_assembler.maxInstructionSize + 6, sizeof(uint32_t)); |
| Jump m_jump = Jump(m_assembler.jne()); |
| m_assembler.extraInstrForBranch(scratchReg3); |
| return m_jump; |
| } |
| |
| Jump branch32(RelationalCondition cond, BaseIndex left, TrustedImm32 right) |
| { |
| RegisterID scr = claimScratch(); |
| move(left.index, scr); |
| lshift32(TrustedImm32(left.scale), scr); |
| add32(left.base, scr); |
| load32(scr, left.offset, scr); |
| compare32(right.m_value, scr, cond); |
| releaseScratch(scr); |
| |
| if (cond == NotEqual) |
| return branchFalse(); |
| return branchTrue(); |
| } |
| |
| void sqrtDouble(FPRegisterID src, FPRegisterID dest) |
| { |
| if (dest != src) |
| m_assembler.dmovRegReg(src, dest); |
| m_assembler.dsqrt(dest); |
| } |
| |
| void absDouble(FPRegisterID, FPRegisterID) |
| { |
| ASSERT_NOT_REACHED(); |
| } |
| |
| Jump branchTest8(ResultCondition cond, Address address, TrustedImm32 mask = TrustedImm32(-1)) |
| { |
| RegisterID addressTempRegister = claimScratch(); |
| load8(address, addressTempRegister); |
| Jump jmp = branchTest32(cond, addressTempRegister, mask); |
| releaseScratch(addressTempRegister); |
| return jmp; |
| } |
| |
| Jump branchTest8(ResultCondition cond, AbsoluteAddress address, TrustedImm32 mask = TrustedImm32(-1)) |
| { |
| RegisterID addressTempRegister = claimScratch(); |
| move(TrustedImmPtr(address.m_ptr), addressTempRegister); |
| load8(Address(addressTempRegister), addressTempRegister); |
| Jump jmp = branchTest32(cond, addressTempRegister, mask); |
| releaseScratch(addressTempRegister); |
| return jmp; |
| } |
| |
| void signExtend32ToPtr(RegisterID src, RegisterID dest) |
| { |
| if (src != dest) |
| move(src, dest); |
| } |
| |
| Jump branch8(RelationalCondition cond, Address left, TrustedImm32 right) |
| { |
| RegisterID addressTempRegister = claimScratch(); |
| load8(left, addressTempRegister); |
| Jump jmp = branch32(cond, addressTempRegister, right); |
| releaseScratch(addressTempRegister); |
| return jmp; |
| } |
| |
| void compare8(RelationalCondition cond, Address left, TrustedImm32 right, RegisterID dest) |
| { |
| RegisterID addressTempRegister = claimScratch(); |
| load8(left, addressTempRegister); |
| compare32(cond, addressTempRegister, right, dest); |
| releaseScratch(addressTempRegister); |
| } |
| |
| Jump branchTruncateDoubleToInt32(FPRegisterID src, RegisterID dest) |
| { |
| m_assembler.ftrcdrmfpul(src); |
| m_assembler.stsfpulReg(dest); |
| m_assembler.loadConstant(0x7fffffff, scratchReg3); |
| m_assembler.cmplRegReg(dest, scratchReg3, SH4Condition(Equal)); |
| m_assembler.ensureSpace(m_assembler.maxInstructionSize + 14, sizeof(uint32_t)); |
| m_assembler.branch(BT_OPCODE, 2); |
| m_assembler.addlImm8r(1, scratchReg3); |
| m_assembler.cmplRegReg(dest, scratchReg3, SH4Condition(Equal)); |
| return branchTrue(); |
| } |
| |
| // Stack manipulation operations |
| |
| void pop(RegisterID dest) |
| { |
| m_assembler.popReg(dest); |
| } |
| |
| void push(RegisterID src) |
| { |
| m_assembler.pushReg(src); |
| } |
| |
| void push(Address address) |
| { |
| if (!address.offset) { |
| push(address.base); |
| return; |
| } |
| |
| if ((address.offset < 0) || (address.offset >= 64)) { |
| RegisterID scr = claimScratch(); |
| m_assembler.loadConstant(address.offset, scr); |
| m_assembler.addlRegReg(address.base, scr); |
| m_assembler.movlMemReg(scr, SH4Registers::sp); |
| m_assembler.addlImm8r(-4, SH4Registers::sp); |
| releaseScratch(scr); |
| return; |
| } |
| |
| m_assembler.movlMemReg(address.offset >> 2, address.base, SH4Registers::sp); |
| m_assembler.addlImm8r(-4, SH4Registers::sp); |
| } |
| |
| void push(TrustedImm32 imm) |
| { |
| RegisterID scr = claimScratch(); |
| m_assembler.loadConstant(imm.m_value, scr); |
| push(scr); |
| releaseScratch(scr); |
| } |
| |
| // Register move operations |
| |
| void move(TrustedImm32 imm, RegisterID dest) |
| { |
| m_assembler.loadConstant(imm.m_value, dest); |
| } |
| |
| DataLabelPtr moveWithPatch(TrustedImmPtr initialValue, RegisterID dest) |
| { |
| m_assembler.ensureSpace(m_assembler.maxInstructionSize, sizeof(uint32_t)); |
| DataLabelPtr dataLabel(this); |
| m_assembler.loadConstantUnReusable(reinterpret_cast<uint32_t>(initialValue.m_value), dest); |
| return dataLabel; |
| } |
| |
| void move(RegisterID src, RegisterID dest) |
| { |
| if (src != dest) |
| m_assembler.movlRegReg(src, dest); |
| } |
| |
| void move(TrustedImmPtr imm, RegisterID dest) |
| { |
| m_assembler.loadConstant(imm.asIntptr(), dest); |
| } |
| |
| void extuw(RegisterID src, RegisterID dst) |
| { |
| m_assembler.extuw(src, dst); |
| } |
| |
| void compare32(RelationalCondition cond, RegisterID left, RegisterID right, RegisterID dest) |
| { |
| m_assembler.cmplRegReg(right, left, SH4Condition(cond)); |
| if (cond != NotEqual) { |
| m_assembler.movt(dest); |
| return; |
| } |
| |
| m_assembler.ensureSpace(m_assembler.maxInstructionSize + 4); |
| m_assembler.movImm8(0, dest); |
| m_assembler.branch(BT_OPCODE, 0); |
| m_assembler.movImm8(1, dest); |
| } |
| |
| void compare32(RelationalCondition cond, RegisterID left, TrustedImm32 right, RegisterID dest) |
| { |
| if (left != dest) { |
| move(right, dest); |
| compare32(cond, left, dest, dest); |
| return; |
| } |
| |
| RegisterID scr = claimScratch(); |
| move(right, scr); |
| compare32(cond, left, scr, dest); |
| releaseScratch(scr); |
| } |
| |
| void test8(ResultCondition cond, Address address, TrustedImm32 mask, RegisterID dest) |
| { |
| ASSERT((cond == Zero) || (cond == NonZero)); |
| |
| load8(address, dest); |
| if (mask.m_value == -1) |
| compare32(0, dest, static_cast<RelationalCondition>(cond)); |
| else |
| testlImm(mask.m_value, dest); |
| if (cond != NonZero) { |
| m_assembler.movt(dest); |
| return; |
| } |
| |
| m_assembler.ensureSpace(m_assembler.maxInstructionSize + 4); |
| m_assembler.movImm8(0, dest); |
| m_assembler.branch(BT_OPCODE, 0); |
| m_assembler.movImm8(1, dest); |
| } |
| |
| void loadPtrLinkReg(ImplicitAddress address) |
| { |
| RegisterID scr = claimScratch(); |
| load32(address, scr); |
| m_assembler.ldspr(scr); |
| releaseScratch(scr); |
| } |
| |
| Jump branch32(RelationalCondition cond, RegisterID left, RegisterID right) |
| { |
| m_assembler.cmplRegReg(right, left, SH4Condition(cond)); |
| /* BT label => BF off |
| nop LDR reg |
| nop braf @reg |
| nop nop |
| */ |
| if (cond == NotEqual) |
| return branchFalse(); |
| return branchTrue(); |
| } |
| |
| Jump branch32(RelationalCondition cond, RegisterID left, TrustedImm32 right) |
| { |
| if (((cond == Equal) || (cond == NotEqual)) && !right.m_value) |
| m_assembler.testlRegReg(left, left); |
| else |
| compare32(right.m_value, left, cond); |
| |
| if (cond == NotEqual) |
| return branchFalse(); |
| return branchTrue(); |
| } |
| |
| Jump branch32(RelationalCondition cond, RegisterID left, Address right) |
| { |
| compare32(right.offset, right.base, left, cond); |
| if (cond == NotEqual) |
| return branchFalse(); |
| return branchTrue(); |
| } |
| |
| Jump branch32(RelationalCondition cond, Address left, RegisterID right) |
| { |
| compare32(right, left.offset, left.base, cond); |
| if (cond == NotEqual) |
| return branchFalse(); |
| return branchTrue(); |
| } |
| |
| Jump branch32(RelationalCondition cond, Address left, TrustedImm32 right) |
| { |
| compare32(right.m_value, left.offset, left.base, cond); |
| if (cond == NotEqual) |
| return branchFalse(); |
| return branchTrue(); |
| } |
| |
| Jump branch32(RelationalCondition cond, AbsoluteAddress left, RegisterID right) |
| { |
| RegisterID scr = claimScratch(); |
| |
| move(TrustedImm32(reinterpret_cast<uint32_t>(left.m_ptr)), scr); |
| m_assembler.cmplRegReg(right, scr, SH4Condition(cond)); |
| releaseScratch(scr); |
| |
| if (cond == NotEqual) |
| return branchFalse(); |
| return branchTrue(); |
| } |
| |
| Jump branch32(RelationalCondition cond, AbsoluteAddress left, TrustedImm32 right) |
| { |
| RegisterID addressTempRegister = claimScratch(); |
| |
| m_assembler.loadConstant(reinterpret_cast<uint32_t>(left.m_ptr), addressTempRegister); |
| m_assembler.movlMemReg(addressTempRegister, addressTempRegister); |
| compare32(right.m_value, addressTempRegister, cond); |
| releaseScratch(addressTempRegister); |
| |
| if (cond == NotEqual) |
| return branchFalse(); |
| return branchTrue(); |
| } |
| |
| Jump branch8(RelationalCondition cond, BaseIndex left, TrustedImm32 right) |
| { |
| ASSERT(!(right.m_value & 0xFFFFFF00)); |
| RegisterID scr = claimScratch(); |
| |
| move(left.index, scr); |
| lshift32(TrustedImm32(left.scale), scr); |
| |
| if (left.offset) |
| add32(TrustedImm32(left.offset), scr); |
| add32(left.base, scr); |
| load8(scr, scr); |
| RegisterID scr1 = claimScratch(); |
| m_assembler.loadConstant(right.m_value, scr1); |
| releaseScratch(scr); |
| releaseScratch(scr1); |
| |
| return branch32(cond, scr, scr1); |
| } |
| |
| Jump branchTest32(ResultCondition cond, RegisterID reg, RegisterID mask) |
| { |
| ASSERT((cond == Zero) || (cond == NonZero)); |
| |
| m_assembler.testlRegReg(reg, mask); |
| |
| if (cond == NonZero) // NotEqual |
| return branchFalse(); |
| return branchTrue(); |
| } |
| |
| Jump branchTest32(ResultCondition cond, RegisterID reg, TrustedImm32 mask = TrustedImm32(-1)) |
| { |
| ASSERT((cond == Zero) || (cond == NonZero)); |
| |
| if (mask.m_value == -1) |
| m_assembler.testlRegReg(reg, reg); |
| else |
| testlImm(mask.m_value, reg); |
| |
| if (cond == NonZero) // NotEqual |
| return branchFalse(); |
| return branchTrue(); |
| } |
| |
| Jump branchTest32(ResultCondition cond, Address address, TrustedImm32 mask = TrustedImm32(-1)) |
| { |
| ASSERT((cond == Zero) || (cond == NonZero)); |
| |
| if (mask.m_value == -1) |
| compare32(0, address.offset, address.base, static_cast<RelationalCondition>(cond)); |
| else |
| testImm(mask.m_value, address.offset, address.base); |
| |
| if (cond == NonZero) // NotEqual |
| return branchFalse(); |
| return branchTrue(); |
| } |
| |
| Jump branchTest32(ResultCondition cond, BaseIndex address, TrustedImm32 mask = TrustedImm32(-1)) |
| { |
| RegisterID scr = claimScratch(); |
| |
| move(address.index, scr); |
| lshift32(TrustedImm32(address.scale), scr); |
| add32(address.base, scr); |
| load32(scr, address.offset, scr); |
| |
| if (mask.m_value == -1) |
| m_assembler.testlRegReg(scr, scr); |
| else |
| testlImm(mask.m_value, scr); |
| |
| releaseScratch(scr); |
| |
| if (cond == NonZero) // NotEqual |
| return branchFalse(); |
| return branchTrue(); |
| } |
| |
| Jump jump() |
| { |
| return Jump(m_assembler.jmp()); |
| } |
| |
| void jump(RegisterID target) |
| { |
| m_assembler.jmpReg(target); |
| } |
| |
| void jump(Address address) |
| { |
| RegisterID scr = claimScratch(); |
| |
| if ((address.offset < 0) || (address.offset >= 64)) { |
| m_assembler.loadConstant(address.offset, scr); |
| m_assembler.addlRegReg(address.base, scr); |
| m_assembler.movlMemReg(scr, scr); |
| } else if (address.offset) |
| m_assembler.movlMemReg(address.offset >> 2, address.base, scr); |
| else |
| m_assembler.movlMemReg(address.base, scr); |
| m_assembler.jmpReg(scr); |
| |
| releaseScratch(scr); |
| } |
| |
| // Arithmetic control flow operations |
| |
| Jump branchAdd32(ResultCondition cond, RegisterID src, RegisterID dest) |
| { |
| ASSERT((cond == Overflow) || (cond == Signed) || (cond == Zero) || (cond == NonZero)); |
| |
| if (cond == Overflow) { |
| m_assembler.addvlRegReg(src, dest); |
| return branchTrue(); |
| } |
| |
| if (cond == Signed) { |
| m_assembler.addlRegReg(src, dest); |
| // Check if dest is negative |
| m_assembler.cmppz(dest); |
| return branchFalse(); |
| } |
| |
| m_assembler.addlRegReg(src, dest); |
| compare32(0, dest, Equal); |
| |
| if (cond == NonZero) // NotEqual |
| return branchFalse(); |
| return branchTrue(); |
| } |
| |
| Jump branchAdd32(ResultCondition cond, TrustedImm32 imm, RegisterID dest) |
| { |
| ASSERT((cond == Overflow) || (cond == Signed) || (cond == Zero) || (cond == NonZero)); |
| |
| move(imm, scratchReg3); |
| return branchAdd32(cond, scratchReg3, dest); |
| } |
| |
| Jump branchAdd32(ResultCondition cond, RegisterID src, TrustedImm32 imm, RegisterID dest) |
| { |
| ASSERT((cond == Overflow) || (cond == Signed) || (cond == Zero) || (cond == NonZero)); |
| |
| if (src != dest) |
| move(src, dest); |
| |
| if (cond == Overflow) { |
| move(imm, scratchReg3); |
| m_assembler.addvlRegReg(scratchReg3, dest); |
| return branchTrue(); |
| } |
| |
| add32(imm, dest); |
| |
| if (cond == Signed) { |
| m_assembler.cmppz(dest); |
| return branchFalse(); |
| } |
| |
| compare32(0, dest, Equal); |
| |
| if (cond == NonZero) // NotEqual |
| return branchFalse(); |
| return branchTrue(); |
| } |
| |
| Jump branchMul32(ResultCondition cond, RegisterID src, RegisterID dest) |
| { |
| ASSERT((cond == Overflow) || (cond == Signed) || (cond == Zero) || (cond == NonZero)); |
| |
| if (cond == Overflow) { |
| RegisterID scr1 = claimScratch(); |
| RegisterID scr = claimScratch(); |
| m_assembler.dmullRegReg(src, dest); |
| m_assembler.stsmacl(dest); |
| m_assembler.movImm8(-31, scr); |
| m_assembler.movlRegReg(dest, scr1); |
| m_assembler.shaRegReg(scr1, scr); |
| m_assembler.stsmach(scr); |
| m_assembler.cmplRegReg(scr, scr1, SH4Condition(Equal)); |
| releaseScratch(scr1); |
| releaseScratch(scr); |
| return branchFalse(); |
| } |
| |
| m_assembler.imullRegReg(src, dest); |
| m_assembler.stsmacl(dest); |
| if (cond == Signed) { |
| // Check if dest is negative |
| m_assembler.cmppz(dest); |
| return branchFalse(); |
| } |
| |
| compare32(0, dest, static_cast<RelationalCondition>(cond)); |
| |
| if (cond == NonZero) // NotEqual |
| return branchFalse(); |
| return branchTrue(); |
| } |
| |
| Jump branchMul32(ResultCondition cond, TrustedImm32 imm, RegisterID src, RegisterID dest) |
| { |
| ASSERT((cond == Overflow) || (cond == Signed) || (cond == Zero) || (cond == NonZero)); |
| |
| move(imm, scratchReg3); |
| if (src != dest) |
| move(src, dest); |
| |
| return branchMul32(cond, scratchReg3, dest); |
| } |
| |
| Jump branchSub32(ResultCondition cond, RegisterID src, RegisterID dest) |
| { |
| ASSERT((cond == Overflow) || (cond == Signed) || (cond == Zero) || (cond == NonZero)); |
| |
| if (cond == Overflow) { |
| m_assembler.subvlRegReg(src, dest); |
| return branchTrue(); |
| } |
| |
| if (cond == Signed) { |
| // Check if dest is negative |
| m_assembler.sublRegReg(src, dest); |
| compare32(0, dest, LessThan); |
| return branchTrue(); |
| } |
| |
| sub32(src, dest); |
| compare32(0, dest, static_cast<RelationalCondition>(cond)); |
| |
| if (cond == NonZero) // NotEqual |
| return branchFalse(); |
| return branchTrue(); |
| } |
| |
| Jump branchSub32(ResultCondition cond, TrustedImm32 imm, RegisterID dest) |
| { |
| ASSERT((cond == Overflow) || (cond == Signed) || (cond == Zero) || (cond == NonZero)); |
| |
| move(imm, scratchReg3); |
| return branchSub32(cond, scratchReg3, dest); |
| } |
| |
| Jump branchSub32(ResultCondition cond, RegisterID src, TrustedImm32 imm, RegisterID dest) |
| { |
| move(imm, scratchReg3); |
| if (src != dest) |
| move(src, dest); |
| return branchSub32(cond, scratchReg3, dest); |
| } |
| |
| Jump branchSub32(ResultCondition cond, RegisterID src1, RegisterID src2, RegisterID dest) |
| { |
| if (src1 != dest) |
| move(src1, dest); |
| return branchSub32(cond, src2, dest); |
| } |
| |
| Jump branchOr32(ResultCondition cond, RegisterID src, RegisterID dest) |
| { |
| ASSERT((cond == Signed) || (cond == Zero) || (cond == NonZero)); |
| |
| if (cond == Signed) { |
| or32(src, dest); |
| compare32(0, dest, static_cast<RelationalCondition>(LessThan)); |
| return branchTrue(); |
| } |
| |
| or32(src, dest); |
| compare32(0, dest, static_cast<RelationalCondition>(cond)); |
| |
| if (cond == NonZero) // NotEqual |
| return branchFalse(); |
| return branchTrue(); |
| } |
| |
| void branchConvertDoubleToInt32(FPRegisterID src, RegisterID dest, JumpList& failureCases, FPRegisterID fpTemp) |
| { |
| m_assembler.ftrcdrmfpul(src); |
| m_assembler.stsfpulReg(dest); |
| convertInt32ToDouble(dest, fscratch); |
| failureCases.append(branchDouble(DoubleNotEqualOrUnordered, fscratch, src)); |
| |
| if (dest == SH4Registers::r0) |
| m_assembler.cmpEqImmR0(0, dest); |
| else { |
| m_assembler.movImm8(0, scratchReg3); |
| m_assembler.cmplRegReg(scratchReg3, dest, SH4Condition(Equal)); |
| } |
| failureCases.append(branchTrue()); |
| } |
| |
| void neg32(RegisterID dst) |
| { |
| m_assembler.neg(dst, dst); |
| } |
| |
| void urshift32(RegisterID shiftamount, RegisterID dest) |
| { |
| if (shiftamount == SH4Registers::r0) |
| m_assembler.andlImm8r(0x1f, shiftamount); |
| else { |
| RegisterID scr = claimScratch(); |
| m_assembler.loadConstant(0x1f, scr); |
| m_assembler.andlRegReg(scr, shiftamount); |
| releaseScratch(scr); |
| } |
| m_assembler.neg(shiftamount, shiftamount); |
| m_assembler.shllRegReg(dest, shiftamount); |
| } |
| |
| void urshift32(TrustedImm32 imm, RegisterID dest) |
| { |
| RegisterID scr = claimScratch(); |
| m_assembler.loadConstant(-(imm.m_value & 0x1f), scr); |
| m_assembler.shaRegReg(dest, scr); |
| releaseScratch(scr); |
| } |
| |
| void urshift32(RegisterID src, TrustedImm32 shiftamount, RegisterID dest) |
| { |
| if (src != dest) |
| move(src, dest); |
| |
| urshift32(shiftamount, dest); |
| } |
| |
| Call call() |
| { |
| return Call(m_assembler.call(), Call::Linkable); |
| } |
| |
| Call nearCall() |
| { |
| return Call(m_assembler.call(), Call::LinkableNear); |
| } |
| |
| Call call(RegisterID target) |
| { |
| return Call(m_assembler.call(target), Call::None); |
| } |
| |
| void call(Address address, RegisterID target) |
| { |
| load32(address.base, address.offset, target); |
| m_assembler.ensureSpace(m_assembler.maxInstructionSize + 2); |
| m_assembler.branch(JSR_OPCODE, target); |
| m_assembler.nop(); |
| } |
| |
| void breakpoint() |
| { |
| m_assembler.bkpt(); |
| m_assembler.nop(); |
| } |
| |
| Jump branchPtrWithPatch(RelationalCondition cond, RegisterID left, DataLabelPtr& dataLabel, TrustedImmPtr initialRightValue = TrustedImmPtr(0)) |
| { |
| RegisterID dataTempRegister = claimScratch(); |
| |
| dataLabel = moveWithPatch(initialRightValue, dataTempRegister); |
| m_assembler.cmplRegReg(dataTempRegister, left, SH4Condition(cond)); |
| releaseScratch(dataTempRegister); |
| |
| if (cond == NotEqual) |
| return branchFalse(); |
| return branchTrue(); |
| } |
| |
| Jump branchPtrWithPatch(RelationalCondition cond, Address left, DataLabelPtr& dataLabel, TrustedImmPtr initialRightValue = TrustedImmPtr(0)) |
| { |
| RegisterID scr = claimScratch(); |
| |
| m_assembler.loadConstant(left.offset, scr); |
| m_assembler.addlRegReg(left.base, scr); |
| m_assembler.movlMemReg(scr, scr); |
| RegisterID scr1 = claimScratch(); |
| dataLabel = moveWithPatch(initialRightValue, scr1); |
| m_assembler.cmplRegReg(scr1, scr, SH4Condition(cond)); |
| releaseScratch(scr); |
| releaseScratch(scr1); |
| |
| if (cond == NotEqual) |
| return branchFalse(); |
| return branchTrue(); |
| } |
| |
| void ret() |
| { |
| m_assembler.ret(); |
| m_assembler.nop(); |
| } |
| |
| DataLabelPtr storePtrWithPatch(TrustedImmPtr initialValue, ImplicitAddress address) |
| { |
| RegisterID scr = claimScratch(); |
| DataLabelPtr label = moveWithPatch(initialValue, scr); |
| store32(scr, address); |
| releaseScratch(scr); |
| return label; |
| } |
| |
| DataLabelPtr storePtrWithPatch(ImplicitAddress address) { return storePtrWithPatch(TrustedImmPtr(0), address); } |
| |
| int sizeOfConstantPool() |
| { |
| return m_assembler.sizeOfConstantPool(); |
| } |
| |
| Call tailRecursiveCall() |
| { |
| RegisterID scr = claimScratch(); |
| |
| m_assembler.loadConstantUnReusable(0x0, scr, true); |
| Jump m_jump = Jump(m_assembler.jmp(scr)); |
| releaseScratch(scr); |
| |
| return Call::fromTailJump(m_jump); |
| } |
| |
| Call makeTailRecursiveCall(Jump oldJump) |
| { |
| oldJump.link(this); |
| return tailRecursiveCall(); |
| } |
| |
| void nop() |
| { |
| m_assembler.nop(); |
| } |
| |
| static FunctionPtr readCallTarget(CodeLocationCall call) |
| { |
| return FunctionPtr(reinterpret_cast<void(*)()>(SH4Assembler::readCallTarget(call.dataLocation()))); |
| } |
| |
| static void replaceWithJump(CodeLocationLabel instructionStart, CodeLocationLabel destination) |
| { |
| ASSERT_NOT_REACHED(); |
| } |
| |
| static ptrdiff_t maxJumpReplacementSize() |
| { |
| ASSERT_NOT_REACHED(); |
| return 0; |
| } |
| |
| static bool canJumpReplacePatchableBranchPtrWithPatch() { return false; } |
| |
| static CodeLocationLabel startOfBranchPtrWithPatchOnRegister(CodeLocationDataLabelPtr label) |
| { |
| return label.labelAtOffset(0); |
| } |
| |
| static void revertJumpReplacementToBranchPtrWithPatch(CodeLocationLabel instructionStart, RegisterID, void* initialValue) |
| { |
| SH4Assembler::revertJump(instructionStart.dataLocation(), reinterpret_cast<uintptr_t>(initialValue) & 0xffff); |
| } |
| |
| static CodeLocationLabel startOfPatchableBranchPtrWithPatchOnAddress(CodeLocationDataLabelPtr) |
| { |
| UNREACHABLE_FOR_PLATFORM(); |
| return CodeLocationLabel(); |
| } |
| |
| static void revertJumpReplacementToPatchableBranchPtrWithPatch(CodeLocationLabel instructionStart, Address, void* initialValue) |
| { |
| UNREACHABLE_FOR_PLATFORM(); |
| } |
| |
| protected: |
| SH4Assembler::Condition SH4Condition(RelationalCondition cond) |
| { |
| return static_cast<SH4Assembler::Condition>(cond); |
| } |
| |
| SH4Assembler::Condition SH4Condition(ResultCondition cond) |
| { |
| return static_cast<SH4Assembler::Condition>(cond); |
| } |
| private: |
| friend class LinkBuffer; |
| friend class RepatchBuffer; |
| |
| static void linkCall(void*, Call, FunctionPtr); |
| static void repatchCall(CodeLocationCall, CodeLocationLabel); |
| static void repatchCall(CodeLocationCall, FunctionPtr); |
| }; |
| |
| } // namespace JSC |
| |
| #endif // ENABLE(ASSEMBLER) |
| |
| #endif // MacroAssemblerSH4_h |
