MCInst.h

Go to the documentation of this file.

//===-- llvm/MC/MCInst.h - MCInst class -------------------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the declaration of the MCInst and MCOperand classes, which
// is the basic representation used to represent low-level machine code
// instructions.
//
//===----------------------------------------------------------------------===//
 
/* Capstone Disassembly Engine */
/* By Nguyen Anh Quynh <aquynh@gmail.com>, 2013-2015 */
 
#ifndef CS_MCINST_H
#define CS_MCINST_H
 
#include "include/capstone/capstone.h"
 
typedef struct MCInst MCInst;
typedef struct cs_struct cs_struct;
typedef struct MCOperand MCOperand;
 
struct MCOperand {
        enum {
                kInvalid = 0,                 
                kRegister,                
                kImmediate,               
                kFPImmediate,             
        } MachineOperandType;
        unsigned char Kind;
 
        union {
                unsigned RegVal;
                int64_t ImmVal;
                double FPImmVal;
        };
};
 
bool MCOperand_isValid(const MCOperand *op);
 
bool MCOperand_isReg(const MCOperand *op);
 
bool MCOperand_isImm(const MCOperand *op);
 
bool MCOperand_isFPImm(const MCOperand *op);
 
bool MCOperand_isInst(const MCOperand *op);
 
unsigned MCOperand_getReg(const MCOperand *op);
 
void MCOperand_setReg(MCOperand *op, unsigned Reg);
 
int64_t MCOperand_getImm(MCOperand *op);
 
void MCOperand_setImm(MCOperand *op, int64_t Val);
 
double MCOperand_getFPImm(const MCOperand *op);
 
void MCOperand_setFPImm(MCOperand *op, double Val);
 
const MCInst *MCOperand_getInst(const MCOperand *op);
 
void MCOperand_setInst(MCOperand *op, const MCInst *Val);
 
// create Reg operand in the next slot
void MCOperand_CreateReg0(MCInst *inst, unsigned Reg);
 
// create Reg operand use the last-unused slot
MCOperand *MCOperand_CreateReg1(MCInst *inst, unsigned Reg);
 
// create Imm operand in the next slot
void MCOperand_CreateImm0(MCInst *inst, int64_t Val);
 
// create Imm operand in the last-unused slot
MCOperand *MCOperand_CreateImm1(MCInst *inst, int64_t Val);
 
struct MCInst {
        unsigned OpcodePub;
        uint8_t size;   // number of operands
        bool has_imm;   // indicate this instruction has an X86_OP_IMM operand - used for ATT syntax
        uint8_t op1_size; // size of 1st operand - for X86 Intel syntax
        unsigned Opcode;
        MCOperand Operands[48];
        cs_insn *flat_insn;     // insn to be exposed to public
        uint64_t address;       // address of this insn
        cs_struct *csh; // save the main csh
        uint8_t x86opsize;      // opsize for [mem] operand
 
        // (Optional) instruction prefix, which can be up to 4 bytes.
        // A prefix byte gets value 0 when irrelevant.
        // This is copied from cs_x86 struct
        uint8_t x86_prefix[4];
        uint8_t imm_size;       // immediate size for X86_OP_IMM operand
        bool writeback; // writeback for ARM
        // operand access index for list of registers sharing the same access right (for ARM)
        uint8_t ac_idx;
        uint8_t popcode_adjust;   // Pseudo X86 instruction adjust
        char assembly[8];       // for special instruction, so that we dont need printer
        unsigned char evm_data[32];     // for EVM PUSH operand
};
 
void MCInst_Init(MCInst *inst);
 
void MCInst_clear(MCInst *inst);
 
// do not free operand after inserting
void MCInst_insert0(MCInst *inst, int index, MCOperand *Op);
 
void MCInst_setOpcode(MCInst *inst, unsigned Op);
 
unsigned MCInst_getOpcode(const MCInst*);
 
void MCInst_setOpcodePub(MCInst *inst, unsigned Op);
 
unsigned MCInst_getOpcodePub(const MCInst*);
 
MCOperand *MCInst_getOperand(MCInst *inst, unsigned i);
 
unsigned MCInst_getNumOperands(const MCInst *inst);
 
// This addOperand2 function doesnt free Op
void MCInst_addOperand2(MCInst *inst, MCOperand *Op);
 
#endif