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C++ CodeOffsetLabel类代码示例

本文整理汇总了C++中CodeOffsetLabel类的典型用法代码示例。如果您正苦于以下问题：C++ CodeOffsetLabel类的具体用法？C++ CodeOffsetLabel怎么用？C++ CodeOffsetLabel使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。


在下文中一共展示了CodeOffsetLabel类的7个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: 

bool
CodeGeneratorX64::visitAsmJSLoadFFIFunc(LAsmJSLoadFFIFunc *ins)
{
    MAsmJSLoadFFIFunc *mir = ins->mir();

    CodeOffsetLabel label = masm.loadRipRelativeInt64(ToRegister(ins->output()));

    return gen->noteGlobalAccess(label.offset(), mir->globalDataOffset());
}
开发者ID:Nebelhom，项目名称:mozilla-central，代码行数:9，代码来源:CodeGenerator-x64.cpp

示例2: srcAddr

void
CodeGeneratorX64::visitAsmJSLoadHeap(LAsmJSLoadHeap *ins)
{
    MAsmJSLoadHeap *mir = ins->mir();
    Scalar::Type vt = mir->accessType();
    const LAllocation *ptr = ins->ptr();
    const LDefinition *out = ins->output();
    Operand srcAddr(HeapReg);

    if (Scalar::isSimdType(vt))
        return emitSimdLoad(ins);

    if (ptr->isConstant()) {
        int32_t ptrImm = ptr->toConstant()->toInt32();
        MOZ_ASSERT(ptrImm >= 0);
        srcAddr = Operand(HeapReg, ptrImm);
    } else {
        srcAddr = Operand(HeapReg, ToRegister(ptr), TimesOne);
    }

    memoryBarrier(ins->mir()->barrierBefore());
    OutOfLineLoadTypedArrayOutOfBounds *ool = nullptr;
    uint32_t maybeCmpOffset = AsmJSHeapAccess::NoLengthCheck;
    if (mir->needsBoundsCheck()) {
        CodeOffsetLabel cmp = masm.cmp32WithPatch(ToRegister(ptr), Imm32(0));
        ool = new(alloc()) OutOfLineLoadTypedArrayOutOfBounds(ToAnyRegister(out), vt);
        addOutOfLineCode(ool, ins->mir());
        masm.j(Assembler::AboveOrEqual, ool->entry());
        maybeCmpOffset = cmp.offset();
    }

    uint32_t before = masm.size();
    switch (vt) {
      case Scalar::Int8:      masm.movsbl(srcAddr, ToRegister(out)); break;
      case Scalar::Uint8:     masm.movzbl(srcAddr, ToRegister(out)); break;
      case Scalar::Int16:     masm.movswl(srcAddr, ToRegister(out)); break;
      case Scalar::Uint16:    masm.movzwl(srcAddr, ToRegister(out)); break;
      case Scalar::Int32:
      case Scalar::Uint32:    masm.movl(srcAddr, ToRegister(out)); break;
      case Scalar::Float32:   masm.loadFloat32(srcAddr, ToFloatRegister(out)); break;
      case Scalar::Float64:   masm.loadDouble(srcAddr, ToFloatRegister(out)); break;
      case Scalar::Float32x4:
      case Scalar::Int32x4:   MOZ_CRASH("SIMD loads should be handled in emitSimdLoad");
      case Scalar::Uint8Clamped:
      case Scalar::MaxTypedArrayViewType:
          MOZ_CRASH("unexpected array type");
    }
    uint32_t after = masm.size();
    verifyHeapAccessDisassembly(before, after, /*isLoad=*/true, vt, srcAddr, *out->output());
    if (ool)
        masm.bind(ool->rejoin());
    memoryBarrier(ins->mir()->barrierAfter());
    masm.append(AsmJSHeapAccess(before, after, vt, ToAnyRegister(out), maybeCmpOffset));
}
开发者ID:stormandsun，项目名称:firefox，代码行数:54，代码来源:CodeGenerator-x64.cpp

示例3: dstAddr

bool
CodeGeneratorX64::visitAsmJSStoreHeap(LAsmJSStoreHeap *ins)
{
    MAsmJSStoreHeap *mir = ins->mir();
    Scalar::Type vt = mir->viewType();
    const LAllocation *ptr = ins->ptr();
    Operand dstAddr(HeapReg);

    if (ptr->isConstant()) {
        int32_t ptrImm = ptr->toConstant()->toInt32();
        JS_ASSERT(ptrImm >= 0);
        dstAddr = Operand(HeapReg, ptrImm);
    } else {
        dstAddr = Operand(HeapReg, ToRegister(ptr), TimesOne);
    }

    Label rejoin;
    uint32_t maybeCmpOffset = AsmJSHeapAccess::NoLengthCheck;
    if (!mir->skipBoundsCheck()) {
        CodeOffsetLabel cmp = masm.cmplWithPatch(ToRegister(ptr), Imm32(0));
        masm.j(Assembler::AboveOrEqual, &rejoin);
        maybeCmpOffset = cmp.offset();
    }

    uint32_t before = masm.size();
    if (ins->value()->isConstant()) {
        switch (vt) {
          case Scalar::Int8:
          case Scalar::Uint8:   masm.movb(Imm32(ToInt32(ins->value())), dstAddr); break;
          case Scalar::Int16:
          case Scalar::Uint16:  masm.movw(Imm32(ToInt32(ins->value())), dstAddr); break;
          case Scalar::Int32:
          case Scalar::Uint32:  masm.movl(Imm32(ToInt32(ins->value())), dstAddr); break;
          default: MOZ_CRASH("unexpected array type");
        }
    } else {
        switch (vt) {
          case Scalar::Int8:
          case Scalar::Uint8:   masm.movb(ToRegister(ins->value()), dstAddr); break;
          case Scalar::Int16:
          case Scalar::Uint16:  masm.movw(ToRegister(ins->value()), dstAddr); break;
          case Scalar::Int32:
          case Scalar::Uint32:  masm.movl(ToRegister(ins->value()), dstAddr); break;
          case Scalar::Float32: masm.storeFloat32(ToFloatRegister(ins->value()), dstAddr); break;
          case Scalar::Float64: masm.storeDouble(ToFloatRegister(ins->value()), dstAddr); break;
          default: MOZ_CRASH("unexpected array type");
        }
    }
    uint32_t after = masm.size();
    if (rejoin.used())
        masm.bind(&rejoin);
    masm.append(AsmJSHeapAccess(before, after, maybeCmpOffset));
    return true;
}
开发者ID:Andrepuel，项目名称:jxcore，代码行数:54，代码来源:CodeGenerator-x64.cpp

示例4: srcAddr

bool
CodeGeneratorX64::visitAsmJSLoadHeap(LAsmJSLoadHeap *ins)
{
    MAsmJSLoadHeap *mir = ins->mir();
    AsmJSHeapAccess::ViewType vt = mir->viewType();
    const LAllocation *ptr = ins->ptr();
    const LDefinition *out = ins->output();
    Operand srcAddr(HeapReg);

    if (ptr->isConstant()) {
        int32_t ptrImm = ptr->toConstant()->toInt32();
        MOZ_ASSERT(ptrImm >= 0);
        srcAddr = Operand(HeapReg, ptrImm);
    } else {
        srcAddr = Operand(HeapReg, ToRegister(ptr), TimesOne);
    }

    memoryBarrier(ins->mir()->barrierBefore());
    OutOfLineLoadTypedArrayOutOfBounds *ool = nullptr;
    uint32_t maybeCmpOffset = AsmJSHeapAccess::NoLengthCheck;
    if (mir->needsBoundsCheck()) {
        ool = new(alloc()) OutOfLineLoadTypedArrayOutOfBounds(ToAnyRegister(out), vt);
        if (!addOutOfLineCode(ool, ins->mir()))
            return false;

        CodeOffsetLabel cmp = masm.cmplWithPatch(ToRegister(ptr), Imm32(0));
        masm.j(Assembler::AboveOrEqual, ool->entry());
        maybeCmpOffset = cmp.offset();
    }

    uint32_t before = masm.size();
    switch (vt) {
      case AsmJSHeapAccess::Int8:      masm.movsbl(srcAddr, ToRegister(out)); break;
      case AsmJSHeapAccess::Uint8:     masm.movzbl(srcAddr, ToRegister(out)); break;
      case AsmJSHeapAccess::Int16:     masm.movswl(srcAddr, ToRegister(out)); break;
      case AsmJSHeapAccess::Uint16:    masm.movzwl(srcAddr, ToRegister(out)); break;
      case AsmJSHeapAccess::Int32:
      case AsmJSHeapAccess::Uint32:    masm.movl(srcAddr, ToRegister(out)); break;
      case AsmJSHeapAccess::Float32:   masm.loadFloat32(srcAddr, ToFloatRegister(out)); break;
      case AsmJSHeapAccess::Float64:   masm.loadDouble(srcAddr, ToFloatRegister(out)); break;
      case AsmJSHeapAccess::Float32x4: masm.loadUnalignedFloat32x4(srcAddr, ToFloatRegister(out)); break;
      case AsmJSHeapAccess::Int32x4:   masm.loadUnalignedInt32x4(srcAddr, ToFloatRegister(out)); break;
      case AsmJSHeapAccess::Uint8Clamped: MOZ_CRASH("unexpected array type");
    }
    uint32_t after = masm.size();
    if (ool)
        masm.bind(ool->rejoin());
    memoryBarrier(ins->mir()->barrierAfter());
    masm.append(AsmJSHeapAccess(before, after, vt, ToAnyRegister(out), maybeCmpOffset));
    return true;
}
开发者ID:marshall，项目名称:gecko-dev，代码行数:51，代码来源:CodeGenerator-x64.cpp

示例5: ToRegister

bool
CodeGeneratorX64::visitAsmJSLoadFuncPtr(LAsmJSLoadFuncPtr *ins)
{
    MAsmJSLoadFuncPtr *mir = ins->mir();

    Register index = ToRegister(ins->index());
    Register tmp = ToRegister(ins->temp());
    Register out = ToRegister(ins->output());

    CodeOffsetLabel label = masm.leaRipRelative(tmp);
    masm.loadPtr(Operand(tmp, index, TimesEight, 0), out);

    return gen->noteGlobalAccess(label.offset(), mir->globalDataOffset());
}
开发者ID:Nebelhom，项目名称:mozilla-central，代码行数:14，代码来源:CodeGenerator-x64.cpp

示例6: JS_ASSERT

bool
CodeGeneratorX64::visitAsmJSStoreGlobalVar(LAsmJSStoreGlobalVar *ins)
{
    MAsmJSStoreGlobalVar *mir = ins->mir();

    MIRType type = mir->value()->type();
    JS_ASSERT(type == MIRType_Int32 || type == MIRType_Double);

    CodeOffsetLabel label;
    if (type == MIRType_Int32)
        label = masm.storeRipRelativeInt32(ToRegister(ins->value()));
    else
        label = masm.storeRipRelativeDouble(ToFloatRegister(ins->value()));

    return gen->noteGlobalAccess(label.offset(), mir->globalDataOffset());
}
开发者ID:Nebelhom，项目名称:mozilla-central，代码行数:16，代码来源:CodeGenerator-x64.cpp

示例7: dstAddr

void
CodeGeneratorX64::visitAsmJSStoreHeap(LAsmJSStoreHeap *ins)
{
    MAsmJSStoreHeap *mir = ins->mir();
    Scalar::Type vt = mir->accessType();
    const LAllocation *ptr = ins->ptr();
    Operand dstAddr(HeapReg);

    if (Scalar::isSimdType(vt))
        return emitSimdStore(ins);

    if (ptr->isConstant()) {
        int32_t ptrImm = ptr->toConstant()->toInt32();
        MOZ_ASSERT(ptrImm >= 0);
        dstAddr = Operand(HeapReg, ptrImm);
    } else {
        dstAddr = Operand(HeapReg, ToRegister(ptr), TimesOne);
    }

    memoryBarrier(ins->mir()->barrierBefore());
    Label rejoin;
    uint32_t maybeCmpOffset = AsmJSHeapAccess::NoLengthCheck;
    if (mir->needsBoundsCheck()) {
        CodeOffsetLabel cmp = masm.cmp32WithPatch(ToRegister(ptr), Imm32(0));
        masm.j(Assembler::AboveOrEqual, &rejoin);
        maybeCmpOffset = cmp.offset();
    }

    uint32_t before = masm.size();
    if (ins->value()->isConstant()) {
        switch (vt) {
          case Scalar::Int8:
          case Scalar::Uint8:        masm.movb(Imm32(ToInt32(ins->value())), dstAddr); break;
          case Scalar::Int16:
          case Scalar::Uint16:       masm.movw(Imm32(ToInt32(ins->value())), dstAddr); break;
          case Scalar::Int32:
          case Scalar::Uint32:       masm.movl(Imm32(ToInt32(ins->value())), dstAddr); break;
          case Scalar::Float32:
          case Scalar::Float64:
          case Scalar::Float32x4:
          case Scalar::Int32x4:
          case Scalar::Uint8Clamped:
          case Scalar::MaxTypedArrayViewType:
              MOZ_CRASH("unexpected array type");
        }
    } else {
        switch (vt) {
          case Scalar::Int8:
          case Scalar::Uint8:        masm.movb(ToRegister(ins->value()), dstAddr); break;
          case Scalar::Int16:
          case Scalar::Uint16:       masm.movw(ToRegister(ins->value()), dstAddr); break;
          case Scalar::Int32:
          case Scalar::Uint32:       masm.movl(ToRegister(ins->value()), dstAddr); break;
          case Scalar::Float32:      masm.storeFloat32(ToFloatRegister(ins->value()), dstAddr); break;
          case Scalar::Float64:      masm.storeDouble(ToFloatRegister(ins->value()), dstAddr); break;
          case Scalar::Float32x4:
          case Scalar::Int32x4:      MOZ_CRASH("SIMD stores must be handled in emitSimdStore");
          case Scalar::Uint8Clamped:
          case Scalar::MaxTypedArrayViewType:
              MOZ_CRASH("unexpected array type");
        }
    }
    uint32_t after = masm.size();
    verifyHeapAccessDisassembly(before, after, /*isLoad=*/false, vt, dstAddr, *ins->value());
    if (rejoin.used())
        masm.bind(&rejoin);
    memoryBarrier(ins->mir()->barrierAfter());
    masm.append(AsmJSHeapAccess(before, after, vt, maybeCmpOffset));
}
开发者ID:stormandsun，项目名称:firefox，代码行数:69，代码来源:CodeGenerator-x64.cpp


注：本文中的CodeOffsetLabel类示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。