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/* Copyright (C) 2024 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: 2024-04-14
* Author: Aryadev Chavali
* Description: Structures for both instructions and programs for the
* virtual machine
*/
#ifndef PROG_H
#define PROG_H
#include <lib/base.h>
typedef enum
{
OP_NOOP = 0,
// Dealing with data and registers
OP_PUSH_BYTE,
OP_PUSH_HWORD,
OP_PUSH_WORD,
OP_POP_BYTE,
OP_POP_HWORD,
OP_POP_WORD,
OP_PUSH_REGISTER_BYTE,
OP_PUSH_REGISTER_HWORD,
OP_PUSH_REGISTER_WORD,
OP_MOV_BYTE,
OP_MOV_HWORD,
OP_MOV_WORD,
OP_DUP_BYTE,
OP_DUP_HWORD,
OP_DUP_WORD,
// Dealing with the heap
OP_MALLOC_BYTE,
OP_MALLOC_HWORD,
OP_MALLOC_WORD,
OP_MALLOC_STACK_BYTE,
OP_MALLOC_STACK_HWORD,
OP_MALLOC_STACK_WORD,
OP_MSET_BYTE,
OP_MSET_HWORD,
OP_MSET_WORD,
OP_MSET_STACK_BYTE,
OP_MSET_STACK_HWORD,
OP_MSET_STACK_WORD,
OP_MGET_BYTE,
OP_MGET_HWORD,
OP_MGET_WORD,
OP_MGET_STACK_BYTE,
OP_MGET_STACK_HWORD,
OP_MGET_STACK_WORD,
OP_MDELETE,
OP_MSIZE,
// 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,
// Mathematical operations
OP_LT_BYTE,
OP_LT_CHAR,
OP_LT_HWORD,
OP_LT_INT,
OP_LT_LONG,
OP_LT_WORD,
OP_LTE_BYTE,
OP_LTE_CHAR,
OP_LTE_HWORD,
OP_LTE_INT,
OP_LTE_LONG,
OP_LTE_WORD,
OP_GT_BYTE,
OP_GT_CHAR,
OP_GT_HWORD,
OP_GT_INT,
OP_GT_LONG,
OP_GT_WORD,
OP_GTE_BYTE,
OP_GTE_CHAR,
OP_GTE_HWORD,
OP_GTE_INT,
OP_GTE_LONG,
OP_GTE_WORD,
OP_PLUS_BYTE,
OP_PLUS_HWORD,
OP_PLUS_WORD,
OP_SUB_BYTE,
OP_SUB_HWORD,
OP_SUB_WORD,
OP_MULT_BYTE,
OP_MULT_HWORD,
OP_MULT_WORD,
// Simple I/O
OP_PRINT_BYTE,
OP_PRINT_CHAR,
OP_PRINT_HWORD,
OP_PRINT_INT,
OP_PRINT_LONG,
OP_PRINT_WORD,
// Program control flow
OP_JUMP_ABS,
OP_JUMP_STACK,
OP_JUMP_IF_BYTE,
OP_JUMP_IF_HWORD,
OP_JUMP_IF_WORD,
// Subroutines
OP_CALL,
OP_CALL_STACK,
OP_RET,
// Should not be an opcode
NUMBER_OF_OPCODES,
OP_HALT = 0b11111111, // top of the byte is a HALT
} opcode_t;
typedef struct
{
opcode_t opcode;
data_t operand;
} inst_t;
typedef struct
{
word start_address;
} prog_header_t;
typedef struct
{
prog_header_t header;
word count;
inst_t instructions[];
} prog_t;
#endif
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