84 lines
3.2 KiB
C++
84 lines
3.2 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 <set>
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#include <unordered_map>
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#include <boost/optional.hpp>
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#include "backend_x64/block_of_code.h"
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#include "backend_x64/reg_alloc.h"
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#include "common/x64/emitter.h"
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#include "frontend/ir/ir.h"
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#include "interface/interface.h"
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namespace Dynarmic {
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namespace BackendX64 {
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class EmitX64 final {
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public:
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EmitX64(BlockOfCode* code, UserCallbacks cb, Jit* jit_interface)
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: reg_alloc(code), code(code), cb(cb), jit_interface(jit_interface) {}
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struct BlockDescriptor {
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CodePtr code_ptr; ///< Entrypoint of emitted code
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size_t size; ///< Length in bytes of emitted code
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};
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/// Emit host machine code for a basic block starting at `descriptor` with intermediate representation `ir`.
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BlockDescriptor Emit(const Arm::LocationDescriptor descriptor, IR::Block& ir);
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/// Looks up an emitted host block in the cache.
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boost::optional<BlockDescriptor> GetBasicBlock(Arm::LocationDescriptor descriptor) {
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auto iter = basic_blocks.find(descriptor);
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if (iter == basic_blocks.end())
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return boost::none;
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return boost::make_optional<BlockDescriptor>(iter->second);
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}
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/// Empties the cache.
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void ClearCache();
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private:
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// Microinstruction emitters
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#define OPCODE(name, type, ...) void Emit##name(IR::Block& block, IR::Inst* inst);
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#include "frontend/ir/opcodes.inc"
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#undef OPCODE
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// Helpers
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void EmitAddCycles(size_t cycles);
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void EmitCondPrelude(Arm::Cond cond,
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boost::optional<Arm::LocationDescriptor> cond_failed,
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Arm::LocationDescriptor current_location);
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// Terminal instruction emitters
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void EmitTerminal(IR::Terminal terminal, Arm::LocationDescriptor initial_location);
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void EmitTerminalInterpret(IR::Term::Interpret terminal, Arm::LocationDescriptor initial_location);
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void EmitTerminalReturnToDispatch(IR::Term::ReturnToDispatch terminal, Arm::LocationDescriptor initial_location);
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void EmitTerminalLinkBlock(IR::Term::LinkBlock terminal, Arm::LocationDescriptor initial_location);
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void EmitTerminalLinkBlockFast(IR::Term::LinkBlockFast terminal, Arm::LocationDescriptor initial_location);
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void EmitTerminalPopRSBHint(IR::Term::PopRSBHint terminal, Arm::LocationDescriptor initial_location);
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void EmitTerminalIf(IR::Term::If terminal, Arm::LocationDescriptor initial_location);
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void Patch(Arm::LocationDescriptor desc, CodePtr bb);
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// Per-block state
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std::set<IR::Value*> inhibit_emission;
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RegAlloc reg_alloc;
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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<u64, CodePtr> unique_hash_to_code_ptr;
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std::unordered_map<u64, std::vector<CodePtr>> patch_unique_hash_locations;
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std::unordered_map<Arm::LocationDescriptor, BlockDescriptor, Arm::LocationDescriptorHash> basic_blocks;
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std::unordered_map<Arm::LocationDescriptor, std::vector<CodePtr>, Arm::LocationDescriptorHash> patch_jg_locations;
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};
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} // namespace BackendX64
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} // namespace Dynarmic
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