110 lines
2.4 KiB
C
110 lines
2.4 KiB
C
/* Copyright (C) 2023 Aryadev Chavali
|
|
|
|
* You may distribute and modify this code under the terms of the
|
|
* GPLv2 license. You should have received a copy of the GPLv2
|
|
* license with this file. If not, please write to:
|
|
* aryadev@aryadevchavali.com.
|
|
|
|
* Created: 2023-10-15
|
|
* Author: Aryadev Chavali
|
|
* Description: Instructions and opcodes
|
|
*/
|
|
|
|
#ifndef INST_H
|
|
#define INST_H
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "./base.h"
|
|
#include "./darr.h"
|
|
|
|
typedef enum
|
|
{
|
|
OP_NOOP = 0,
|
|
|
|
// Dealing with data and registers
|
|
OP_PUSH_BYTE,
|
|
OP_PUSH_HWORD,
|
|
OP_PUSH_WORD,
|
|
|
|
OP_PUSH_REGISTER_BYTE,
|
|
OP_PUSH_REGISTER_HWORD,
|
|
OP_PUSH_REGISTER_WORD,
|
|
|
|
OP_POP_BYTE,
|
|
OP_POP_HWORD,
|
|
OP_POP_WORD,
|
|
|
|
OP_MOV_BYTE,
|
|
OP_MOV_HWORD,
|
|
OP_MOV_WORD,
|
|
|
|
// Boolean operations
|
|
OP_NOT_BYTE,
|
|
OP_NOT_HWORD,
|
|
OP_NOT_WORD,
|
|
|
|
OP_OR_BYTE,
|
|
OP_OR_HWORD,
|
|
OP_OR_WORD,
|
|
|
|
OP_AND_BYTE,
|
|
OP_AND_HWORD,
|
|
OP_AND_WORD,
|
|
|
|
OP_XOR_BYTE,
|
|
OP_XOR_HWORD,
|
|
OP_XOR_WORD,
|
|
|
|
OP_EQ_BYTE,
|
|
OP_EQ_HWORD,
|
|
OP_EQ_WORD,
|
|
|
|
OP_HALT = 0b11111111, // top of the byte is a HALT
|
|
} opcode_t;
|
|
|
|
const char *opcode_as_cstr(opcode_t);
|
|
|
|
#define OPCODE_IS_TYPE(OPCODE, OP_TYPE) \
|
|
(((OPCODE) >= OP_TYPE##_BYTE) && ((OPCODE) <= OP_TYPE##_WORD))
|
|
|
|
typedef struct
|
|
{
|
|
opcode_t opcode;
|
|
data_t operand;
|
|
} inst_t;
|
|
|
|
void inst_print(inst_t, FILE *);
|
|
|
|
size_t inst_bytecode_size(inst_t);
|
|
void inst_write_bytecode(inst_t, darr_t *);
|
|
void insts_write_bytecode(inst_t *, size_t, darr_t *);
|
|
// Here the dynamic array is a preloaded buffer of bytes, where
|
|
// darr.available is the number of overall bytes and used is the
|
|
// cursor (where we are in the buffer).
|
|
inst_t inst_read_bytecode(darr_t *);
|
|
inst_t *insts_read_bytecode(darr_t *, size_t *);
|
|
|
|
void insts_write_bytecode_file(inst_t *, size_t, FILE *);
|
|
inst_t *insts_read_bytecode_file(FILE *, size_t *);
|
|
|
|
#define INST_PUSH(TYPE, OP) \
|
|
((inst_t){.opcode = OP_PUSH_##TYPE, .operand = D##TYPE(OP)})
|
|
|
|
#define INST_MOV(TYPE, OP) \
|
|
((inst_t){.opcode = OP_MOV_##TYPE, .operand = D##TYPE(OP)})
|
|
|
|
#define INST_POP(TYPE) ((inst_t){.opcode = OP_POP_##TYPE})
|
|
|
|
#define INST_PUSH_REG(TYPE, REG) \
|
|
((inst_t){.opcode = OP_PUSH_REGISTER_##TYPE, .operand = D##TYPE(REG)})
|
|
|
|
#define INST_NOT(TYPE) ((inst_t){.opcode = OP_NOT_##TYPE})
|
|
#define INST_OR(TYPE) ((inst_t){.opcode = OP_OR_##TYPE})
|
|
#define INST_AND(TYPE) ((inst_t){.opcode = OP_AND_##TYPE})
|
|
#define INST_XOR(TYPE) ((inst_t){.opcode = OP_XOR_##TYPE})
|
|
#define INST_EQ(TYPE) ((inst_t){.opcode = OP_EQ_##TYPE})
|
|
|
|
#endif
|