diff options
Diffstat (limited to 'usr.sbin/dbsym/dbsym.c')
| -rw-r--r-- | usr.sbin/dbsym/dbsym.c | 255 |
1 files changed, 0 insertions, 255 deletions
diff --git a/usr.sbin/dbsym/dbsym.c b/usr.sbin/dbsym/dbsym.c deleted file mode 100644 index 833627c..0000000 --- a/usr.sbin/dbsym/dbsym.c +++ /dev/null @@ -1,255 +0,0 @@ -/* Written by Pace Willisson (pace@blitz.com) - * and placed in the public domain. - */ - -#ifndef lint -static char rcsid[] = "$Id: dbsym.c,v 1.3 1994/01/19 03:52:25 nate Exp $"; -#endif /* not lint */ - -#include <stdio.h> -#include <stdlib.h> -#include <a.out.h> -#include <stab.h> -#include <machine/param.h> -#include <vm/vm_param.h> -#include <vm/lock.h> -#include <vm/pmap.h> -#include <machine/pmap.h> -#include <machine/vmparam.h> - -#define FILE_OFFSET(vadr) (((vadr) - text_adr) - N_DATADDR(hdr) + \ - N_DATOFF(hdr) + N_TXTADDR(hdr)) - -u_int text_adr = KERNBASE; - -struct nlist *old_syms; -int num_old_syms; -char *old_strtab; -int old_strtab_size; - -struct nlist *new_syms; -int num_new_syms; -int new_syms_bytes; -char *new_strtab; -int new_strtab_size; - -int db_symtabsize_adr; -int db_symtab_adr; - -int avail; - -int force = 0; -int zap_locals = 0; -int debugging = 0; - -usage () -{ - fprintf (stderr, "usage: dbsym [-fgx] [-T addr] file\n"); - exit (1); -} - -struct exec hdr; - -main (argc, argv) -char **argv; -{ - FILE *f; - char *name; - extern int optind; - int c, i; - int need; - char *buf, *p; - struct nlist *nsp, *sp; - int len; - - - while ((c = getopt (argc, argv, "fgxT:")) != EOF) { - switch (c) { - case 'f': - force = 1; - break; - case 'g': - debugging = 1; - break; - case 'x': - zap_locals = 1; - break; - case 'T': - text_adr = strtoul(optarg, &p, 16); - if (*p) - err("illegal text address: %s", optarg); - break; - default: - usage (); - } - } - - if (optind >= argc) - usage (); - - name = argv[optind++]; - - if (optind != argc) - usage (); - - if ((f = fopen (name, "r+")) == NULL) { - fprintf (stderr, "can't open %s\n", name); - exit (1); - } - - if (fread ((char *)&hdr, sizeof hdr, 1, f) != 1) { - fprintf (stderr, "can't read header\n"); - exit (1); - } - - if (N_BADMAG (hdr)) { - fprintf (stderr, "bad magic number\n"); - exit (1); - } - - if (hdr.a_syms == 0) { - fprintf (stderr, "no symbols\n"); - exit (1); - } - - fseek (f, N_STROFF (hdr), 0); - if (fread ((char *)&old_strtab_size, sizeof (int), 1, f) != 1) { - fprintf (stderr, "can't read old strtab size\n"); - exit (1); - } - - if ((old_syms = (struct nlist *)malloc (hdr.a_syms)) == NULL - || ((old_strtab = malloc (old_strtab_size)) == NULL) - || ((new_syms = (struct nlist *)malloc (hdr.a_syms)) == NULL) - || ((new_strtab = malloc (old_strtab_size)) == NULL)) { - fprintf (stderr, "out of memory\n"); - exit (1); - } - - fseek (f, N_SYMOFF (hdr), 0); - if (fread ((char *)old_syms, hdr.a_syms, 1, f) != 1) { - fprintf (stderr, "can't read symbols\n"); - exit (1); - } - - fseek (f, N_STROFF (hdr), 0); - if (fread ((char *)old_strtab, old_strtab_size, 1, f) != 1) { - fprintf (stderr, "can't read string table\n"); - exit (1); - } - - num_old_syms = hdr.a_syms / sizeof (struct nlist); - - new_strtab_size = 4; - - nsp = new_syms; - for (i = 0, sp = old_syms; i < num_old_syms; i++, sp++) { - if (zap_locals && !(sp->n_type & N_EXT)) - continue; - - if (sp->n_type & N_STAB) - switch (sp->n_type & ~N_EXT) { - case N_SLINE: - if (debugging) - *nsp++ = *sp; - continue; - case N_FUN: - case N_PSYM: - case N_SO: - if (!debugging) - continue; - goto skip_tests; - break; - default: - continue; - } - - if ((sp->n_type & ~N_EXT) == N_UNDF) - continue; - - if (!debugging && (sp->n_type & ~N_EXT) == N_FN) - continue; - - if (sp->n_un.n_strx == 0) - continue; - - if (sp->n_value < text_adr) - continue; - - if (sp->n_value > (text_adr + hdr.a_text + hdr.a_data + - hdr.a_bss)) - continue; - - skip_tests: - - name = old_strtab + sp->n_un.n_strx; - - len = strlen (name); - - if (len == 0) - continue; - - if (strcmp (name, "gcc_compiled.") == 0) - continue; - - if (strcmp (name, "gcc2_compiled.") == 0) - continue; - - if (strcmp (name, "___gnu_compiled_c") == 0) - continue; - - *nsp = *sp; - - nsp->n_un.n_strx = new_strtab_size; - strcpy (new_strtab + new_strtab_size, name); - new_strtab_size += len + 1; - nsp++; - - if (strcmp (name, "_db_symtab") == 0) - db_symtab_adr = sp->n_value; - if (strcmp (name, "_db_symtabsize") == 0) - db_symtabsize_adr = sp->n_value; - } - - if (db_symtab_adr == 0 || db_symtabsize_adr == 0) - if (!force) { - fprintf (stderr, "couldn't find db_symtab symbols\n"); - exit (1); - } else - exit (0); - - *(int *)new_strtab = new_strtab_size; - num_new_syms = nsp - new_syms; - new_syms_bytes = num_new_syms * sizeof (struct nlist); - - need = sizeof (int) - + num_new_syms * sizeof (struct nlist) - + new_strtab_size; - - fseek (f, FILE_OFFSET (db_symtabsize_adr), 0); - - if (fread ((char *)&avail, sizeof (int), 1, f) != 1) { - fprintf (stderr, "can't read symtabsize\n"); - exit (1); - } - - printf ("dbsym: need %d; avail %d\n", need, avail); - - if (need > avail) { - fprintf (stderr, "not enough room in db_symtab array\n"); - exit (1); - } - - fseek (f, FILE_OFFSET (db_symtab_adr), 0); - fwrite ((char *)&new_syms_bytes, sizeof (int), 1, f); - fwrite ((char *)new_syms, new_syms_bytes, 1, f); - fwrite (new_strtab, new_strtab_size, 1, f); - fflush (f); - - if (feof (f) || ferror (f)) { - fprintf (stderr, "write error\n"); - exit (1); - } - exit (0); -} - |
