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104 lines
5.9 KiB
104 lines
5.9 KiB
#pragma once
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#include <devirt_t.hpp>
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#include "llvm/IR/BasicBlock.h"
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#include "llvm/IR/Constants.h"
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#include "llvm/IR/DerivedTypes.h"
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#include "llvm/IR/Function.h"
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#include "llvm/IR/IRBuilder.h"
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#include "llvm/IR/IRPrintingPasses.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/IR/Module.h"
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#include "llvm/IR/PassManager.h"
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#include "llvm/IR/Type.h"
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#include "llvm/IR/Verifier.h"
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#include "llvm/Pass.h"
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namespace vm
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{
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class lifters_t
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{
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// private default constructor...
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// used for singleton...
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lifters_t()
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{
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}
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using lifter_callback_t =
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std::function< void( vm::devirt_t *rtn, const vm::instrs::code_block_t &vm_code_block,
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const vm::instrs::virt_instr_t &vinstr, llvm::IRBuilder<> *ir_builder ) >;
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static lifter_callback_t lconstq, lconstdwsxq, lconstwsxq, lconstbzxw, lconstbsxq, lconstwsxdw, lconstdw,
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lconstbsxdw;
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static lifter_callback_t addq, adddw, addw;
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static lifter_callback_t sregq, sregdw, sregb;
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static lifter_callback_t lregq, lregdw;
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static lifter_callback_t imulq;
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static lifter_callback_t pushvsp;
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static lifter_callback_t popvsp;
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static lifter_callback_t writeq, writedw;
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static lifter_callback_t readq, readdw, readb;
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static lifter_callback_t nandq, nanddw, nandb;
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static lifter_callback_t shrq;
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static lifter_callback_t jmp;
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static lifter_callback_t lflagsq;
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static lifter_callback_t vmexit;
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std::map< vm::handler::mnemonic_t, lifter_callback_t * > lifters = { { vm::handler::LCONSTQ, &lconstq },
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{ vm::handler::LCONSTDW, &lconstdw },
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{ vm::handler::LCONSTDWSXQ, &lconstdwsxq },
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{ vm::handler::LCONSTWSXQ, &lconstwsxq },
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{ vm::handler::LCONSTBZXW, &lconstbzxw },
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{ vm::handler::LCONSTBSXQ, &lconstbsxq },
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{ vm::handler::LCONSTWSXDW, &lconstwsxdw },
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{ vm::handler::LCONSTBSXDW, &lconstbsxdw },
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{ vm::handler::ADDQ, &addq },
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{ vm::handler::ADDDW, &adddw },
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{ vm::handler::ADDW, &addw },
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{ vm::handler::SHRQ, &shrq },
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{ vm::handler::IMULQ, &imulq },
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{ vm::handler::PUSHVSP, &pushvsp },
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{ vm::handler::POPVSP, &popvsp },
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{ vm::handler::SREGQ, &sregq },
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{ vm::handler::SREGDW, &sregdw },
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{ vm::handler::SREGB, &sregb },
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{ vm::handler::LREGQ, &lregq },
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{ vm::handler::LREGDW, &lregdw },
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{ vm::handler::READQ, &readq },
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{ vm::handler::READDW, &readdw },
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{ vm::handler::READB, &readb },
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{ vm::handler::WRITEQ, &writeq },
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{ vm::handler::WRITEDW, &writedw },
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{ vm::handler::NANDQ, &nandq },
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{ vm::handler::NANDDW, &nanddw },
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{ vm::handler::NANDB, &nandb },
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{ vm::handler::LFLAGSQ, &lflagsq },
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{ vm::handler::JMP, &jmp },
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{ vm::handler::VMEXIT, &vmexit } };
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static llvm::Value *and_flags( vm::devirt_t *rtn, std::uint8_t byte_size, llvm::Value *result );
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static llvm::Value *add_flags( vm::devirt_t *rtn, std::uint8_t byte_size, llvm::Value *lhs, llvm::Value *rhs );
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static llvm::Value *shr_flags( vm::devirt_t *rtn, std::uint8_t byte_size, llvm::Value *lhs, llvm::Value *rhs,
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llvm::Value *result );
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public:
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static lifters_t *get_instance( void )
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{
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static lifters_t obj;
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return &obj;
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}
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bool lift( vm::devirt_t *rtn, const vm::instrs::code_block_t &vm_code_block,
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const vm::instrs::virt_instr_t &vinstr, llvm::IRBuilder<> *ir_builder )
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{
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if ( vinstr.mnemonic_t == vm::handler::INVALID || lifters.find( vinstr.mnemonic_t ) == lifters.end() )
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return false;
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( *( lifters[ vinstr.mnemonic_t ] ) )( rtn, vm_code_block, vinstr, ir_builder );
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return true;
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}
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};
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} // namespace vm
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