mirror of
https://github.com/pnx/m16vm
synced 2026-06-16 03:44:55 +02:00
96 lines
1.9 KiB
C
96 lines
1.9 KiB
C
/* vm.c
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*
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* Copyright (C) 2012,2014,2018-2019 Henrik Hautakoski <henrik.hautakoski@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#include <stdio.h>
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#include "program.h"
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#include "mm.h"
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#include "cpu.h"
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#ifdef M16_DEBUG_MEM
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void print_memory() {
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int i = 0;
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printf("\n");
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for(i = 0; i < 32; i++) {
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printf("%.2X ", memory[i]);
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}
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printf("\n");
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}
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#else
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#define print_memory()
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#endif /* ! M16_DEBUG_MEM */
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#ifdef M16_DEBUG_REG
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void print_regs(int16_t *regs) {
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int i = 0;
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printf("\n");
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for(i = 0; i < CPU_NUM_REGS; i++) {
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printf("r%i = %i\n", i, regs[i]);
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}
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printf("\n");
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}
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#else
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#define print_regs(regs)
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#endif /* ! M16_DEBUG_REG */
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void run(struct program *prog) {
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struct cpu_state state;
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int rc;
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mm_init();
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cpu_init(&state);
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cpu_instr_load(&state, prog->instr, prog->len);
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do {
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rc = cpu_tick(&state);
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} while(rc == 0);
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print_regs(state.reg);
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print_memory();
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mm_exit();
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}
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int main(int argc, char **argv) {
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struct program prog = { 0 };
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if (argc < 2) {
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fprintf(stderr, "usage: %s <file>\n", argv[0]);
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return 1;
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}
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if (program_loadfromfile(&prog, argv[1]) < 0)
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return 1;
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// Execute the program.
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run(&prog);
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program_free(&prog);
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return 0;
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}
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