mirror of
https://github.com/pnx/m16vm
synced 2026-06-16 03:44:55 +02:00
45 lines
798 B
C
45 lines
798 B
C
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <unistd.h>
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#include "program.h"
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int program_loadfromfile(struct program *prog, const char *filename) {
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struct stat st;
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ssize_t rc = -1;
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int fd;
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fd = open(filename, O_RDONLY);
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if (fd < 0) {
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fprintf(stderr, "Could not open file %s: %s\n",
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filename, strerror(errno));
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return -1;
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}
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if (fstat(fd, &st) < 0)
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goto close_fd;
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prog->len = st.st_size;
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prog->instr = malloc(prog->len);
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if (prog->instr == NULL)
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goto close_fd;
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rc = read(fd, prog->instr, prog->len);
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if (rc < 0)
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goto free_mem;
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return rc;
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free_mem: free(prog->instr);
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close_fd: close(fd);
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return rc;
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}
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void program_free(struct program *prog) {
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free(prog->instr);
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prog->len = 0;
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}
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