| /* |
| * Copyright (C) 2011 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 DFGFPRInfo_h |
| #define DFGFPRInfo_h |
| |
| #if ENABLE(DFG_JIT) |
| |
| #include "DFGRegisterBank.h" |
| #include "MacroAssembler.h" |
| |
| namespace JSC { namespace DFG { |
| |
| typedef MacroAssembler::FPRegisterID FPRReg; |
| #define InvalidFPRReg ((FPRReg)-1) |
| |
| #if CPU(X86) || CPU(X86_64) |
| |
| class FPRInfo { |
| public: |
| typedef FPRReg RegisterType; |
| static const unsigned numberOfRegisters = 6; |
| |
| // Temporary registers. |
| static const FPRReg fpRegT0 = X86Registers::xmm0; |
| static const FPRReg fpRegT1 = X86Registers::xmm1; |
| static const FPRReg fpRegT2 = X86Registers::xmm2; |
| static const FPRReg fpRegT3 = X86Registers::xmm3; |
| static const FPRReg fpRegT4 = X86Registers::xmm4; |
| static const FPRReg fpRegT5 = X86Registers::xmm5; |
| #if CPU(X86_64) |
| // Only X86_64 passes aguments in xmm registers |
| static const FPRReg argumentFPR0 = X86Registers::xmm0; // fpRegT0 |
| static const FPRReg argumentFPR1 = X86Registers::xmm1; // fpRegT1 |
| static const FPRReg argumentFPR2 = X86Registers::xmm2; // fpRegT2 |
| static const FPRReg argumentFPR3 = X86Registers::xmm3; // fpRegT3 |
| #endif |
| // On X86 the return will actually be on the x87 stack, |
| // so we'll copy to xmm0 for sanity! |
| static const FPRReg returnValueFPR = X86Registers::xmm0; // fpRegT0 |
| |
| // FPRReg mapping is direct, the machine regsiter numbers can |
| // be used directly as indices into the FPR RegisterBank. |
| COMPILE_ASSERT(X86Registers::xmm0 == 0, xmm0_is_0); |
| COMPILE_ASSERT(X86Registers::xmm1 == 1, xmm1_is_1); |
| COMPILE_ASSERT(X86Registers::xmm2 == 2, xmm2_is_2); |
| COMPILE_ASSERT(X86Registers::xmm3 == 3, xmm3_is_3); |
| COMPILE_ASSERT(X86Registers::xmm4 == 4, xmm4_is_4); |
| COMPILE_ASSERT(X86Registers::xmm5 == 5, xmm5_is_5); |
| static FPRReg toRegister(unsigned index) |
| { |
| return (FPRReg)index; |
| } |
| static unsigned toIndex(FPRReg reg) |
| { |
| return (unsigned)reg; |
| } |
| |
| static const char* debugName(FPRReg reg) |
| { |
| ASSERT(reg != InvalidFPRReg); |
| #if CPU(X86_64) |
| ASSERT(static_cast<int>(reg) < 16); |
| static const char* nameForRegister[16] = { |
| "xmm0", "xmm1", "xmm2", "xmm3", |
| "xmm4", "xmm5", "xmm6", "xmm7", |
| "xmm8", "xmm9", "xmm10", "xmm11", |
| "xmm12", "xmm13", "xmm14", "xmm15" |
| }; |
| #elif CPU(X86) |
| ASSERT(static_cast<int>(reg) < 8); |
| static const char* nameForRegister[8] = { |
| "xmm0", "xmm1", "xmm2", "xmm3", |
| "xmm4", "xmm5", "xmm6", "xmm7" |
| }; |
| #endif |
| return nameForRegister[reg]; |
| } |
| }; |
| |
| #endif |
| |
| #if CPU(ARM) |
| |
| class FPRInfo { |
| public: |
| typedef FPRReg RegisterType; |
| static const unsigned numberOfRegisters = 6; |
| |
| // Temporary registers. |
| // d7 is use by the MacroAssembler as fpTempRegister. |
| static const FPRReg fpRegT0 = ARMRegisters::d0; |
| static const FPRReg fpRegT1 = ARMRegisters::d1; |
| static const FPRReg fpRegT2 = ARMRegisters::d2; |
| static const FPRReg fpRegT3 = ARMRegisters::d3; |
| static const FPRReg fpRegT4 = ARMRegisters::d4; |
| static const FPRReg fpRegT5 = ARMRegisters::d5; |
| // ARMv7 doesn't pass arguments in fp registers. The return |
| // value is also actually in integer registers, for now |
| // we'll return in d0 for simplicity. |
| static const FPRReg returnValueFPR = ARMRegisters::d0; // fpRegT0 |
| |
| #if CPU(ARM_HARDFP) |
| static const FPRReg argumentFPR0 = ARMRegisters::d0; // fpRegT0 |
| static const FPRReg argumentFPR1 = ARMRegisters::d1; // fpRegT1 |
| #endif |
| |
| // FPRReg mapping is direct, the machine regsiter numbers can |
| // be used directly as indices into the FPR RegisterBank. |
| COMPILE_ASSERT(ARMRegisters::d0 == 0, d0_is_0); |
| COMPILE_ASSERT(ARMRegisters::d1 == 1, d1_is_1); |
| COMPILE_ASSERT(ARMRegisters::d2 == 2, d2_is_2); |
| COMPILE_ASSERT(ARMRegisters::d3 == 3, d3_is_3); |
| COMPILE_ASSERT(ARMRegisters::d4 == 4, d4_is_4); |
| COMPILE_ASSERT(ARMRegisters::d5 == 5, d5_is_5); |
| static FPRReg toRegister(unsigned index) |
| { |
| return (FPRReg)index; |
| } |
| static unsigned toIndex(FPRReg reg) |
| { |
| return (unsigned)reg; |
| } |
| |
| static const char* debugName(FPRReg reg) |
| { |
| ASSERT(reg != InvalidFPRReg); |
| ASSERT(static_cast<int>(reg) < 32); |
| static const char* nameForRegister[32] = { |
| "d0", "d1", "d2", "d3", |
| "d4", "d5", "d6", "d7", |
| "d8", "d9", "d10", "d11", |
| "d12", "d13", "d14", "d15", |
| "d16", "d17", "d18", "d19", |
| "d20", "d21", "d22", "d23", |
| "d24", "d25", "d26", "d27", |
| "d28", "d29", "d30", "d31" |
| }; |
| return nameForRegister[reg]; |
| } |
| }; |
| |
| #endif |
| |
| #if CPU(MIPS) |
| |
| class FPRInfo { |
| public: |
| typedef FPRReg RegisterType; |
| static const unsigned numberOfRegisters = 6; |
| |
| // Temporary registers. |
| static const FPRReg fpRegT0 = MIPSRegisters::f0; |
| static const FPRReg fpRegT1 = MIPSRegisters::f4; |
| static const FPRReg fpRegT2 = MIPSRegisters::f6; |
| static const FPRReg fpRegT3 = MIPSRegisters::f8; |
| static const FPRReg fpRegT4 = MIPSRegisters::f10; |
| static const FPRReg fpRegT5 = MIPSRegisters::f18; |
| |
| static const FPRReg returnValueFPR = MIPSRegisters::f0; |
| |
| static const FPRReg argumentFPR0 = MIPSRegisters::f12; |
| static const FPRReg argumentFPR1 = MIPSRegisters::f14; |
| |
| static FPRReg toRegister(unsigned index) |
| { |
| static const FPRReg registerForIndex[numberOfRegisters] = { |
| fpRegT0, fpRegT1, fpRegT2, fpRegT3, fpRegT4, fpRegT5 }; |
| |
| ASSERT(index < numberOfRegisters); |
| return registerForIndex[index]; |
| } |
| |
| static unsigned toIndex(FPRReg reg) |
| { |
| ASSERT(reg != InvalidFPRReg); |
| ASSERT(reg < 20); |
| static const unsigned indexForRegister[20] = { |
| 0, InvalidIndex, InvalidIndex, InvalidIndex, |
| 1, InvalidIndex, 2, InvalidIndex, |
| 3, InvalidIndex, 4, InvalidIndex, |
| InvalidIndex, InvalidIndex, InvalidIndex, InvalidIndex, |
| InvalidIndex, InvalidIndex, 5, InvalidIndex, |
| }; |
| unsigned result = indexForRegister[reg]; |
| ASSERT(result != InvalidIndex); |
| return result; |
| } |
| |
| static const char* debugName(FPRReg reg) |
| { |
| ASSERT(reg != InvalidFPRReg); |
| ASSERT(reg < 32); |
| static const char* nameForRegister[32] = { |
| "f0", "f1", "f2", "f3", |
| "f4", "f5", "f6", "f7", |
| "f8", "f9", "f10", "f11", |
| "f12", "f13", "f14", "f15" |
| "f16", "f17", "f18", "f19" |
| "f20", "f21", "f22", "f23" |
| "f24", "f25", "f26", "f27" |
| "f28", "f29", "f30", "f31" |
| }; |
| return nameForRegister[reg]; |
| } |
| private: |
| |
| static const unsigned InvalidIndex = 0xffffffff; |
| }; |
| |
| #endif |
| |
| typedef RegisterBank<FPRInfo>::iterator fpr_iterator; |
| |
| } } // namespace JSC::DFG |
| |
| #endif |
| #endif |
