54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
#ifndef OPCODES_H
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#define OPCODES_H
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#include <string.h>
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#include <errno.h>
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#include <stdio.h>
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//#include "symbols_table.h"
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typedef enum {
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R1, R2, R3, R4, R5, R6, R7, R8
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} Registers;
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typedef enum {
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ADD, SUB, JZ, INT, YLD, RET,
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CMP, CMPI, NOP, JMP, CALL, LODW, LAA, LODWI, JE, INC, DEC, LOADB,
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STOB, STOW, JG, JL, AND, XOR, OR, NOT, SHR, SHL, POP, PUSH, LODB
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} Mnemonic;
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typedef enum {
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NoParameter = 1,
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ConstantParameter = 2,
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AddressParameter = 4,
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RegisterParameter = 8,
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UnresolvedParameter = 16
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} OpcodeParameter;
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typedef struct {
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OpcodeParameter ParameterType;
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OpcodeParameter InterpretedAs;
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union {
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int Number; //ConstanrParam
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Registers Register; //Register param
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char* Symbol; //Symbol* Symbol; //Address param
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} Value;
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} Parameter;
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typedef struct {
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Mnemonic Mnemonic;
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Parameter* ParameterOne;
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Parameter* ParameterTwo;
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} Instruction;
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Instruction* CreateInstruction(Mnemonic mnemonic);
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Parameter* CreateParameter(OpcodeParameter parameterType);
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void FreeInstruction(Instruction* instruction);
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int IsOpcode(const char*, Mnemonic*);
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int IsRegister(const char*, Registers*);
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void ExpectParameters(Mnemonic mnemonic, OpcodeParameter* paramOne, OpcodeParameter* paramTwo);
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void GetMnemonicText(Mnemonic mnemonic, char buffer[12]);
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void GetRegisterText(Registers reg, char buffer[3]);
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unsigned char GetInstructionMask(Mnemonic type);
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#endif |