118 lines
4 KiB
C++
118 lines
4 KiB
C++
/* This file is part of the dynarmic project.
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* Copyright (c) 2016 MerryMage
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* This software may be used and distributed according to the terms of the GNU
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* General Public License version 2 or any later version.
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*/
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#pragma once
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#include <unordered_map>
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#include <vector>
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#include <boost/icl/interval_map.hpp>
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#include <boost/icl/interval_set.hpp>
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#include <boost/optional.hpp>
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#include <xbyak_util.h>
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#include "backend_x64/reg_alloc.h"
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#include "common/address_range.h"
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#include "dynarmic/callbacks.h"
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#include "frontend/A32/location_descriptor.h"
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#include "frontend/ir/terminal.h"
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namespace Dynarmic {
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class Jit;
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namespace IR {
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class Block;
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class Inst;
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} // namespace IR
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namespace BackendX64 {
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class BlockOfCode;
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struct EmitContext {
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EmitContext(RegAlloc& reg_alloc, IR::Block& block);
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void EraseInstruction(IR::Inst* inst);
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virtual bool FPSCR_RoundTowardsZero() const = 0;
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virtual bool FPSCR_FTZ() const = 0;
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virtual bool FPSCR_DN() const = 0;
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RegAlloc& reg_alloc;
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IR::Block& block;
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};
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template <typename ProgramCounterType>
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class EmitX64 {
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public:
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struct BlockDescriptor {
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CodePtr entrypoint; // Entrypoint of emitted code
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size_t size; // Length in bytes of emitted code
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A32::LocationDescriptor start_location;
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boost::icl::discrete_interval<ProgramCounterType> range;
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};
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EmitX64(BlockOfCode* code, UserCallbacks cb, Jit* jit_interface);
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virtual ~EmitX64();
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/// Looks up an emitted host block in the cache.
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boost::optional<BlockDescriptor> GetBasicBlock(IR::LocationDescriptor descriptor) const;
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/// Empties the entire cache.
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void ClearCache();
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void InvalidateCacheRanges(const boost::icl::interval_set<ProgramCounterType>& ranges);
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protected:
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// Microinstruction emitters
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#define OPCODE(name, type, ...) void Emit##name(EmitContext& ctx, IR::Inst* inst);
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#define A32OPC(...)
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#include "frontend/ir/opcodes.inc"
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#undef OPCODE
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#undef A32OPC
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// Helpers
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void EmitAddCycles(size_t cycles);
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Xbyak::Label EmitCond(IR::Cond cond);
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void EmitCondPrelude(const IR::Block& block);
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void PushRSBHelper(Xbyak::Reg64 loc_desc_reg, Xbyak::Reg64 index_reg, IR::LocationDescriptor target);
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// Terminal instruction emitters
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void EmitTerminal(IR::Terminal terminal, IR::LocationDescriptor initial_location);
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virtual void EmitTerminalImpl(IR::Term::Interpret terminal, IR::LocationDescriptor initial_location) = 0;
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virtual void EmitTerminalImpl(IR::Term::ReturnToDispatch terminal, IR::LocationDescriptor initial_location) = 0;
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virtual void EmitTerminalImpl(IR::Term::LinkBlock terminal, IR::LocationDescriptor initial_location) = 0;
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virtual void EmitTerminalImpl(IR::Term::LinkBlockFast terminal, IR::LocationDescriptor initial_location) = 0;
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virtual void EmitTerminalImpl(IR::Term::PopRSBHint terminal, IR::LocationDescriptor initial_location) = 0;
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virtual void EmitTerminalImpl(IR::Term::If terminal, IR::LocationDescriptor initial_location) = 0;
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virtual void EmitTerminalImpl(IR::Term::CheckHalt terminal, IR::LocationDescriptor initial_location) = 0;
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// Patching
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struct PatchInformation {
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std::vector<CodePtr> jg;
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std::vector<CodePtr> jmp;
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std::vector<CodePtr> mov_rcx;
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};
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void Patch(const IR::LocationDescriptor& target_desc, CodePtr target_code_ptr);
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void Unpatch(const IR::LocationDescriptor& target_desc);
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virtual void EmitPatchJg(const IR::LocationDescriptor& target_desc, CodePtr target_code_ptr = nullptr) = 0;
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virtual void EmitPatchJmp(const IR::LocationDescriptor& target_desc, CodePtr target_code_ptr = nullptr) = 0;
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virtual void EmitPatchMovRcx(CodePtr target_code_ptr = nullptr) = 0;
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// State
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BlockOfCode* code;
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UserCallbacks cb;
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Jit* jit_interface;
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std::unordered_map<IR::LocationDescriptor, BlockDescriptor> block_descriptors;
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std::unordered_map<IR::LocationDescriptor, PatchInformation> patch_information;
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boost::icl::interval_map<ProgramCounterType, std::set<IR::LocationDescriptor>> block_ranges;
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};
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} // namespace BackendX64
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} // namespace Dynarmic
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