ref: 0f595fa896765dfdbe88c760ebd97edd8a1f123b
dir: /src/cmd/addr2line.c/
#include <errno.h> #include <limits.h> #include <stdarg.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <scc/arg.h> #include <scc/mach.h> static int status; static char *filename = "a.out"; char *argv0; static void error(char *fmt, ...) { va_list va; va_start(va, fmt); fprintf(stderr, "strip: %s: ", filename); vfprintf(stderr, fmt, va); putc('\n', stderr); va_end(va); status = EXIT_FAILURE; } static void addr2line(Obj *obj, char *s) { int line; unsigned long long addr; char *end; char fname[FILENAME_MAX]; addr = strtoull(s, &end, 16); if (*end || addr == ULONG_MAX) { error("invalid address: '%s'", s); return; } if (pc2line(obj, addr, fname, &line) < 0) { error("not matching line"); return; } printf("%s:%d\n", fname, line); } static char * getline(void) { size_t len; static char buf[BUFSIZ]; for (;;) { if (!fgets(buf, sizeof(buf), stdin)) { error(strerror(errno)); return NULL; } if ((len = strlen(buf)) == 0) continue; if (buf[len-1] != '\n') { error("too long address"); continue; } buf[len-1] = '\0'; return buf; } } static Obj * loadexe(char *fname) { int t; FILE *fp; Obj *obj; if ((fp = fopen(fname, "rb")) == NULL) { error(strerror(errno)); return NULL; } if ((t = objtype(fp, NULL)) < 0) { error("file format not recognized"); return NULL; } if ((obj = newobj(t)) == NULL) { error("out of memory"); return NULL; } if (readobj(obj, fp) < 0) { error("file corrupted"); return NULL; } return obj; } static void usage(void) { fputs("usage: addr2line [-e file] [addr ...]\n", stderr); exit(EXIT_FAILURE); } int main(int argc, char *argv[]) { char *ln; Obj *obj; ARGBEGIN { case 'e': filename = EARGF(usage()); break; default: usage(); } ARGEND obj = loadexe(filename); if (!obj) return status; if (argc > 0) { for ( ; *argv; ++argv) addr2line(obj, *argv); } else { while ((ln = getline()) != NULL) addr2line(obj, ln); } fflush(stdout); if (ferror(stdout)) { filename = "stdout"; error("error writing stdout: %s", strerror(errno)); } return status; }