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156 lines
4.8 KiB
156 lines
4.8 KiB
// AsmJit - Machine code generation for C++
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//
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// * Official AsmJit Home Page: https://asmjit.com
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// * Official Github Repository: https://github.com/asmjit/asmjit
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//
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// Copyright (c) 2008-2020 The AsmJit Authors
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//
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// This software is provided 'as-is', without any express or implied
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// warranty. In no event will the authors be held liable for any damages
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// arising from the use of this software.
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//
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it
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// freely, subject to the following restrictions:
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//
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// 1. The origin of this software must not be misrepresented; you must not
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// claim that you wrote the original software. If you use this software
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// in a product, an acknowledgment in the product documentation would be
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// appreciated but is not required.
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// 2. Altered source versions must be plainly marked as such, and must not be
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// misrepresented as being the original software.
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// 3. This notice may not be removed or altered from any source distribution.
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#include "../core/api-build_p.h"
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#include "../core/archtraits.h"
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#include "../core/misc_p.h"
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#ifdef ASMJIT_BUILD_X86
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#include "../x86/x86archtraits_p.h"
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#endif
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#ifdef ASMJIT_BUILD_ARM
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#include "../arm/armarchtraits_p.h"
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#endif
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ASMJIT_BEGIN_NAMESPACE
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// ============================================================================
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// [asmjit::ArchTraits]
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// ============================================================================
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static const constexpr ArchTraits noArchTraits = {
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0xFF, // SP.
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0xFF, // FP.
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0xFF, // LR.
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0xFF, // PC.
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{ 0, 0, 0 }, // Reserved.
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0, // HW stack alignment.
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0, // Min stack offset.
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0, // Max stack offset.
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{ 0, 0, 0, 0}, // ISA features [Gp, Vec, Other0, Other1].
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{ { 0 } }, // RegTypeToSignature.
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{ 0 }, // RegTypeToTypeId.
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{ 0 } // TypeIdToRegType.
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};
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ASMJIT_VARAPI const ArchTraits _archTraits[Environment::kArchCount] = {
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// No architecture.
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noArchTraits,
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// X86/X86 architectures.
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#ifdef ASMJIT_BUILD_X86
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x86::x86ArchTraits,
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x86::x64ArchTraits,
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#else
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noArchTraits,
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noArchTraits,
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#endif
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// RISCV32/RISCV64 architectures.
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noArchTraits,
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noArchTraits,
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// ARM architecture
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noArchTraits,
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// AArch64 architecture.
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#ifdef ASMJIT_BUILD_ARM
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arm::a64ArchTraits,
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#else
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noArchTraits,
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#endif
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// ARM/Thumb architecture.
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noArchTraits,
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// Reserved.
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noArchTraits,
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// MIPS32/MIPS64
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noArchTraits,
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noArchTraits
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};
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// ============================================================================
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// [asmjit::ArchUtils]
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// ============================================================================
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ASMJIT_FAVOR_SIZE Error ArchUtils::typeIdToRegInfo(uint32_t arch, uint32_t typeId, uint32_t* typeIdOut, RegInfo* regInfoOut) noexcept {
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const ArchTraits& archTraits = ArchTraits::byArch(arch);
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// Passed RegType instead of TypeId?
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if (typeId <= BaseReg::kTypeMax)
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typeId = archTraits.regTypeToTypeId(typeId);
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if (ASMJIT_UNLIKELY(!Type::isValid(typeId)))
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return DebugUtils::errored(kErrorInvalidTypeId);
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// First normalize architecture dependent types.
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if (Type::isAbstract(typeId)) {
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bool is32Bit = Environment::is32Bit(arch);
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if (typeId == Type::kIdIntPtr)
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typeId = is32Bit ? Type::kIdI32 : Type::kIdI64;
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else
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typeId = is32Bit ? Type::kIdU32 : Type::kIdU64;
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}
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// Type size helps to construct all groups of registers.
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// TypeId is invalid if the size is zero.
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uint32_t size = Type::sizeOf(typeId);
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if (ASMJIT_UNLIKELY(!size))
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return DebugUtils::errored(kErrorInvalidTypeId);
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if (ASMJIT_UNLIKELY(typeId == Type::kIdF80))
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return DebugUtils::errored(kErrorInvalidUseOfF80);
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uint32_t regType = 0;
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if (typeId >= Type::_kIdBaseStart && typeId < Type::_kIdVec32Start) {
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regType = archTraits._typeIdToRegType[typeId - Type::_kIdBaseStart];
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if (!regType) {
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if (typeId == Type::kIdI64 || typeId == Type::kIdU64)
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return DebugUtils::errored(kErrorInvalidUseOfGpq);
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else
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return DebugUtils::errored(kErrorInvalidTypeId);
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}
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}
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else {
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if (size <= 8 && archTraits._regInfo[BaseReg::kTypeVec64].isValid())
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regType = BaseReg::kTypeVec64;
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else if (size <= 16 && archTraits._regInfo[BaseReg::kTypeVec128].isValid())
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regType = BaseReg::kTypeVec128;
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else if (size == 32 && archTraits._regInfo[BaseReg::kTypeVec256].isValid())
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regType = BaseReg::kTypeVec256;
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else if (archTraits._regInfo[BaseReg::kTypeVec512].isValid())
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regType = BaseReg::kTypeVec512;
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else
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return DebugUtils::errored(kErrorInvalidTypeId);
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}
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*typeIdOut = typeId;
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regInfoOut->reset(archTraits.regTypeToSignature(regType));
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return kErrorOk;
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}
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ASMJIT_END_NAMESPACE
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