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/* 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 "./base.h"
typedef enum
{
OP_NOOP = 0,
// 0b0001
OP_PUSH_BYTE = 0b00000001,
OP_PUSH_WORD = 0b00000101,
OP_PUSH_FLOAT = 0b00001001,
// 0b0010
OP_MOV_BYTE = 0b00000010,
OP_MOV_WORD = 0b00000110,
OP_MOV_FLOAT = 0b00001010,
// 0b0100
OP_POP_BYTE = 0b00000100,
OP_POP_WORD = 0b00001100,
OP_POP_FLOAT = 0b00010100,
// 0b1000
OP_PUSH_BREG = 0b00001000,
OP_PUSH_WREG = 0b00011000,
OP_PUSH_FREG = 0b00101000,
OP_HALT,
} opcode_t;
#define OPCODE_IS_PUSH(OPCODE) (((OPCODE)&0b1) == 0b1)
#define OPCODE_IS_MOV(OPCODE) (((OPCODE)&0b10) == 0b10)
#define OPCODE_IS_POP(OPCODE) (((OPCODE)&0b100) == 0b100)
#define OPCODE_IS_PUSH_REG(OPCODE) (((OPCODE)&0b1000) == 0b1000)
typedef struct
{
opcode_t opcode;
data_t operand;
word reg;
} inst_t;
#define INST_BPUSH(BYTE) \
((inst_t){.opcode = OP_PUSH_BYTE, .operand = DBYTE(BYTE)})
#define INST_WPUSH(WORD) \
((inst_t){.opcode = OP_PUSH_WORD, .operand = DWORD(WORD)})
#define INST_FPUSH(FLOAT) \
((inst_t){.opcode = OP_PUSH_FLOAT, .operand = DFLOAT(FLOAT)})
#define INST_BMOV(BYTE, REG) \
((inst_t){.opcode = OP_MOV_BYTE, .operand = DBYTE(BYTE), .reg = (REG)})
#define INST_WMOV(WORD, REG) \
((inst_t){.opcode = OP_MOV_WORD, .operand = DWORD(WORD), .reg = (REG)})
#define INST_FMOV(FLOAT, REG) \
((inst_t){.opcode = OP_MOV_FLOAT, .operand = DFLOAT(FLOAT), .reg = (REG)})
#define INST_BPOP(BYTE) \
((inst_t){.opcode = OP_POP_BYTE, .operand = DBYTE(BYTE)})
#define INST_WPOP(WORD) \
((inst_t){.opcode = OP_POP_WORD, .operand = DWORD(WORD)})
#define INST_FPOP(FLOAT) \
((inst_t){.opcode = OP_POP_FLOAT, .operand = DFLOAT(FLOAT)})
#define INST_BPUSH_REG(REG) ((inst_t){.opcode = OP_PUSH_BREG, .reg = (REG)})
#define INST_WPUSH_REG(REG) ((inst_t){.opcode = OP_PUSH_WREG, .reg = (REG)})
#define INST_FPUSH_REG(REG) ((inst_t){.opcode = OP_PUSH_FREG, .reg = (REG)})
#endif
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