mirror of
https://github.com/pnx/m16vm
synced 2026-06-16 03:44:55 +02:00
98 lines
2.1 KiB
C
98 lines
2.1 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 <string.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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#include "debug.h"
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static unsigned debug_mem = 0;
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static unsigned debug_reg = 0;
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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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if (debug_reg)
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debug_print_regs(state.reg);
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if (debug_mem)
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debug_print_memory(mm_base_addr);
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mm_exit();
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}
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int usage(const char* name) {
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fprintf(stderr, "usage: %s [ --dmem | --dreg ] <file>\n", name);
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return 1;
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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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const char *filename = NULL;
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int i;
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if (argc < 2) {
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return usage(argv[0]);
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}
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// Parse options.
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for(i = 1; i < argc; i++) {
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if (argv[i][0] == '-' && argv[i][1] == '-') {
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if (!strcmp(argv[i] + 2, "dmem")) {
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debug_mem = 1;
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} else if (!strcmp(argv[i] + 2, "dreg")) {
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debug_reg = 1;
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} else {
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fprintf(stderr, "Invalid option '%s'\n", argv[i]);
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}
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} else {
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filename = argv[i];
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break;
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}
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}
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if (filename == NULL) {
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return usage(argv[0]);
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}
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if (program_loadfromfile(&prog, filename) < 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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