Aryadev Chavali
e2f4c5c125
Moved all opcodes that use unsigned types before the signed types AND ordered signed types into BYTE, CHAR, HWORD, INT, WORD, LONG. This is not only logically consistent but also looks prettier.
174 lines
2.5 KiB
C
174 lines
2.5 KiB
C
/* Copyright (C) 2024 Aryadev Chavali
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* You may distribute and modify this code under the terms of the
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* GPLv2 license. You should have received a copy of the GPLv2
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* license with this file. If not, please write to:
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* aryadev@aryadevchavali.com.
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* Created: 2024-04-14
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* Author: Aryadev Chavali
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* Description: Structures for both instructions and programs for the
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* virtual machine
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*/
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#ifndef PROG_H
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#define PROG_H
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#include <lib/base.h>
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typedef enum
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{
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OP_NOOP = 0,
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// Dealing with data and registers
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OP_PUSH_BYTE,
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OP_PUSH_HWORD,
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OP_PUSH_WORD,
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OP_POP_BYTE,
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OP_POP_HWORD,
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OP_POP_WORD,
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OP_PUSH_REGISTER_BYTE,
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OP_PUSH_REGISTER_HWORD,
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OP_PUSH_REGISTER_WORD,
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OP_MOV_BYTE,
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OP_MOV_HWORD,
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OP_MOV_WORD,
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OP_DUP_BYTE,
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OP_DUP_HWORD,
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OP_DUP_WORD,
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// Dealing with the heap
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OP_MALLOC_BYTE,
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OP_MALLOC_HWORD,
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OP_MALLOC_WORD,
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OP_MALLOC_STACK_BYTE,
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OP_MALLOC_STACK_HWORD,
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OP_MALLOC_STACK_WORD,
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OP_MSET_BYTE,
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OP_MSET_HWORD,
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OP_MSET_WORD,
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OP_MSET_STACK_BYTE,
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OP_MSET_STACK_HWORD,
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OP_MSET_STACK_WORD,
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OP_MGET_BYTE,
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OP_MGET_HWORD,
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OP_MGET_WORD,
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OP_MGET_STACK_BYTE,
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OP_MGET_STACK_HWORD,
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OP_MGET_STACK_WORD,
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OP_MDELETE,
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OP_MSIZE,
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// Boolean operations
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OP_NOT_BYTE,
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OP_NOT_HWORD,
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OP_NOT_WORD,
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OP_OR_BYTE,
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OP_OR_HWORD,
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OP_OR_WORD,
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OP_AND_BYTE,
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OP_AND_HWORD,
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OP_AND_WORD,
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OP_XOR_BYTE,
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OP_XOR_HWORD,
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OP_XOR_WORD,
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OP_EQ_BYTE,
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OP_EQ_HWORD,
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OP_EQ_WORD,
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// Mathematical operations
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OP_PLUS_BYTE,
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OP_PLUS_HWORD,
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OP_PLUS_WORD,
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OP_SUB_BYTE,
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OP_SUB_HWORD,
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OP_SUB_WORD,
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OP_MULT_BYTE,
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OP_MULT_HWORD,
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OP_MULT_WORD,
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// Comparison operations
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OP_LT_BYTE,
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OP_LT_CHAR,
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OP_LT_HWORD,
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OP_LT_INT,
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OP_LT_WORD,
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OP_LT_LONG,
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OP_LTE_BYTE,
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OP_LTE_CHAR,
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OP_LTE_HWORD,
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OP_LTE_INT,
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OP_LTE_WORD,
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OP_LTE_LONG,
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OP_GT_BYTE,
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OP_GT_CHAR,
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OP_GT_HWORD,
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OP_GT_INT,
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OP_GT_WORD,
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OP_GT_LONG,
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OP_GTE_BYTE,
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OP_GTE_CHAR,
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OP_GTE_HWORD,
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OP_GTE_INT,
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OP_GTE_WORD,
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OP_GTE_LONG,
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// Simple I/O
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OP_PRINT_BYTE,
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OP_PRINT_CHAR,
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OP_PRINT_HWORD,
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OP_PRINT_INT,
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OP_PRINT_WORD,
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OP_PRINT_LONG,
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// Program control flow
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OP_JUMP_ABS,
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OP_JUMP_STACK,
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OP_JUMP_IF_BYTE,
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OP_JUMP_IF_HWORD,
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OP_JUMP_IF_WORD,
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// Subroutines
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OP_CALL,
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OP_CALL_STACK,
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OP_RET,
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// Should not be an opcode
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NUMBER_OF_OPCODES,
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OP_HALT = 0b11111111, // top of the byte is a HALT
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} opcode_t;
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typedef struct
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{
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opcode_t opcode;
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data_t operand;
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} inst_t;
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typedef struct
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{
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word start_address;
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word count;
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inst_t instructions[];
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} prog_t;
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#endif
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