diff options
Diffstat (limited to 'JavaScriptCore/assembler/MacroAssemblerARM.h')
| -rw-r--r-- | JavaScriptCore/assembler/MacroAssemblerARM.h | 113 |
1 files changed, 95 insertions, 18 deletions
diff --git a/JavaScriptCore/assembler/MacroAssemblerARM.h b/JavaScriptCore/assembler/MacroAssemblerARM.h index 21b8de8..40d2e4a 100644 --- a/JavaScriptCore/assembler/MacroAssemblerARM.h +++ b/JavaScriptCore/assembler/MacroAssemblerARM.h @@ -1,6 +1,6 @@ /* * Copyright (C) 2008 Apple Inc. - * Copyright (C) 2009 University of Szeged + * Copyright (C) 2009, 2010 University of Szeged * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -28,8 +28,6 @@ #ifndef MacroAssemblerARM_h #define MacroAssemblerARM_h -#include <wtf/Platform.h> - #if ENABLE(ASSEMBLER) && CPU(ARM_TRADITIONAL) #include "ARMAssembler.h" @@ -180,6 +178,20 @@ public: { m_assembler.movs_r(dest, m_assembler.asr(dest, imm.m_value & 0x1f)); } + + void urshift32(RegisterID shift_amount, RegisterID dest) + { + ARMWord w = ARMAssembler::getOp2(0x1f); + ASSERT(w != ARMAssembler::INVALID_IMM); + m_assembler.and_r(ARMRegisters::S0, shift_amount, w); + + m_assembler.movs_r(dest, m_assembler.lsr_r(dest, ARMRegisters::S0)); + } + + void urshift32(Imm32 imm, RegisterID dest) + { + m_assembler.movs_r(dest, m_assembler.lsr(dest, imm.m_value & 0x1f)); + } void sub32(RegisterID src, RegisterID dest) { @@ -214,6 +226,11 @@ public: m_assembler.eors_r(dest, dest, m_assembler.getImm(imm.m_value, ARMRegisters::S0)); } + void load8(ImplicitAddress address, RegisterID dest) + { + m_assembler.dataTransfer32(true, dest, address.base, address.offset, true); + } + void load32(ImplicitAddress address, RegisterID dest) { m_assembler.dataTransfer32(true, dest, address.base, address.offset); @@ -256,6 +273,14 @@ public: else m_assembler.ldrh_d(dest, ARMRegisters::S0, ARMAssembler::getOp2Byte(-address.offset)); } + + void load16(ImplicitAddress address, RegisterID dest) + { + if (address.offset >= 0) + m_assembler.ldrh_u(dest, address.base, ARMAssembler::getOp2Byte(address.offset)); + else + m_assembler.ldrh_d(dest, address.base, ARMAssembler::getOp2Byte(-address.offset)); + } DataLabel32 store32WithAddressOffsetPatch(RegisterID src, Address address) { @@ -359,6 +384,12 @@ public: move(src, dest); } + Jump branch8(Condition cond, Address left, Imm32 right) + { + load8(left, ARMRegisters::S1); + return branch32(cond, ARMRegisters::S1, right); + } + Jump branch32(Condition cond, RegisterID left, RegisterID right, int useConstantPool = 0) { m_assembler.cmp_r(left, right); @@ -422,6 +453,12 @@ public: return m_assembler.jmp(ARMCondition(cond)); } + Jump branchTest8(Condition cond, Address address, Imm32 mask = Imm32(-1)) + { + load8(address, ARMRegisters::S1); + return branchTest32(cond, ARMRegisters::S1, mask); + } + Jump branchTest32(Condition cond, RegisterID reg, RegisterID mask) { ASSERT((cond == Zero) || (cond == NonZero)); @@ -459,7 +496,7 @@ public: void jump(RegisterID target) { - move(target, ARMRegisters::pc); + m_assembler.bx(target); } void jump(Address address) @@ -530,6 +567,13 @@ public: return Jump(m_assembler.jmp(ARMCondition(cond))); } + Jump branchNeg32(Condition cond, RegisterID srcDest) + { + ASSERT((cond == Overflow) || (cond == Signed) || (cond == Zero) || (cond == NonZero)); + neg32(srcDest); + return Jump(m_assembler.jmp(ARMCondition(cond))); + } + Jump branchOr32(Condition cond, RegisterID src, RegisterID dest) { ASSERT((cond == Signed) || (cond == Zero) || (cond == NonZero)); @@ -544,14 +588,19 @@ public: Call nearCall() { +#if WTF_ARM_ARCH_AT_LEAST(5) + ensureSpace(2 * sizeof(ARMWord), sizeof(ARMWord)); + m_assembler.loadBranchTarget(ARMRegisters::S1, ARMAssembler::AL, true); + return Call(m_assembler.blx(ARMRegisters::S1), Call::LinkableNear); +#else prepareCall(); return Call(m_assembler.jmp(ARMAssembler::AL, true), Call::LinkableNear); +#endif } Call call(RegisterID target) { - prepareCall(); - move(ARMRegisters::pc, target); + m_assembler.blx(target); JmpSrc jmpSrc; return Call(jmpSrc, Call::None); } @@ -563,7 +612,7 @@ public: void ret() { - m_assembler.mov_r(ARMRegisters::pc, linkRegister); + m_assembler.bx(linkRegister); } void set32(Condition cond, RegisterID left, RegisterID right, RegisterID dest) @@ -659,8 +708,14 @@ public: Call call() { +#if WTF_ARM_ARCH_AT_LEAST(5) + ensureSpace(2 * sizeof(ARMWord), sizeof(ARMWord)); + m_assembler.loadBranchTarget(ARMRegisters::S1, ARMAssembler::AL, true); + return Call(m_assembler.blx(ARMRegisters::S1), Call::Linkable); +#else prepareCall(); return Call(m_assembler.jmp(ARMAssembler::AL, true), Call::Linkable); +#endif } Call tailRecursiveCall() @@ -718,12 +773,17 @@ public: return false; } + bool supportsFloatingPointSqrt() const + { + return s_isVFPPresent; + } + void loadDouble(ImplicitAddress address, FPRegisterID dest) { m_assembler.doubleTransfer(true, dest, address.base, address.offset); } - void loadDouble(void* address, FPRegisterID dest) + void loadDouble(const void* address, FPRegisterID dest) { m_assembler.ldr_un_imm(ARMRegisters::S0, (ARMWord)address); m_assembler.fdtr_u(true, dest, ARMRegisters::S0, 0); @@ -779,6 +839,11 @@ public: mulDouble(ARMRegisters::SD0, dest); } + void sqrtDouble(FPRegisterID src, FPRegisterID dest) + { + m_assembler.fsqrtd_r(dest, src); + } + void convertInt32ToDouble(RegisterID src, FPRegisterID dest) { m_assembler.fmsr_r(dest, src); @@ -864,44 +929,56 @@ protected: void prepareCall() { +#if WTF_ARM_ARCH_VERSION < 5 ensureSpace(2 * sizeof(ARMWord), sizeof(ARMWord)); m_assembler.mov_r(linkRegister, ARMRegisters::pc); +#endif } void call32(RegisterID base, int32_t offset) { +#if WTF_ARM_ARCH_AT_LEAST(5) + int targetReg = ARMRegisters::S1; +#else + int targetReg = ARMRegisters::pc; +#endif + int tmpReg = ARMRegisters::S1; + if (base == ARMRegisters::sp) offset += 4; if (offset >= 0) { if (offset <= 0xfff) { prepareCall(); - m_assembler.dtr_u(true, ARMRegisters::pc, base, offset); + m_assembler.dtr_u(true, targetReg, base, offset); } else if (offset <= 0xfffff) { - m_assembler.add_r(ARMRegisters::S0, base, ARMAssembler::OP2_IMM | (offset >> 12) | (10 << 8)); + m_assembler.add_r(tmpReg, base, ARMAssembler::OP2_IMM | (offset >> 12) | (10 << 8)); prepareCall(); - m_assembler.dtr_u(true, ARMRegisters::pc, ARMRegisters::S0, offset & 0xfff); + m_assembler.dtr_u(true, targetReg, tmpReg, offset & 0xfff); } else { - ARMWord reg = m_assembler.getImm(offset, ARMRegisters::S0); + ARMWord reg = m_assembler.getImm(offset, tmpReg); prepareCall(); - m_assembler.dtr_ur(true, ARMRegisters::pc, base, reg); + m_assembler.dtr_ur(true, targetReg, base, reg); } } else { offset = -offset; if (offset <= 0xfff) { prepareCall(); - m_assembler.dtr_d(true, ARMRegisters::pc, base, offset); + m_assembler.dtr_d(true, targetReg, base, offset); } else if (offset <= 0xfffff) { - m_assembler.sub_r(ARMRegisters::S0, base, ARMAssembler::OP2_IMM | (offset >> 12) | (10 << 8)); + m_assembler.sub_r(tmpReg, base, ARMAssembler::OP2_IMM | (offset >> 12) | (10 << 8)); prepareCall(); - m_assembler.dtr_d(true, ARMRegisters::pc, ARMRegisters::S0, offset & 0xfff); + m_assembler.dtr_d(true, targetReg, tmpReg, offset & 0xfff); } else { - ARMWord reg = m_assembler.getImm(offset, ARMRegisters::S0); + ARMWord reg = m_assembler.getImm(offset, tmpReg); prepareCall(); - m_assembler.dtr_dr(true, ARMRegisters::pc, base, reg); + m_assembler.dtr_dr(true, targetReg, base, reg); } } +#if WTF_ARM_ARCH_AT_LEAST(5) + m_assembler.blx(targetReg); +#endif } private: |