Kitchen sink version of dbsym.
-f force; don't complain if db_symtab is missing -g debugging; include line number and function info -x remove local symbols -T addr specify load address (necessary to determine file positions)
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4f59ef7ee3
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@ -4,6 +4,7 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <a.out.h>
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#include <stab.h>
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#include <machine/param.h>
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#define FILE_OFFSET(vadr) (((vadr) - text_adr) - N_DATADDR(hdr) + \
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@ -27,11 +28,13 @@ int db_symtab_adr;
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int avail;
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int force = 0;
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int zap_locals = 0;
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int debugging = 0;
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usage ()
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{
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fprintf (stderr, "usage: dbsym [-l] [-T addr] file\n");
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fprintf (stderr, "usage: dbsym [-fgx] [-T addr] file\n");
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exit (1);
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}
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@ -50,9 +53,15 @@ char **argv;
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int len;
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while ((c = getopt (argc, argv, "lT:")) != EOF) {
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while ((c = getopt (argc, argv, "fgxT:")) != EOF) {
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switch (c) {
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case 'l':
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case 'f':
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force = 1;
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break;
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case 'g':
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debugging = 1;
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break;
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case 'x':
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zap_locals = 1;
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break;
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case 'T':
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@ -125,24 +134,44 @@ char **argv;
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nsp = new_syms;
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for (i = 0, sp = old_syms; i < num_old_syms; i++, sp++) {
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if (zap_locals && !(sp->n_type & N_EXT))
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continue;
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if (sp->n_type & N_STAB)
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switch (sp->n_type & ~N_EXT) {
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case N_SLINE:
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if (debugging)
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*nsp++ = *sp;
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continue;
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case N_FUN:
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case N_PSYM:
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case N_SO:
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if (!debugging)
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continue;
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goto skip_tests;
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break;
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default:
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continue;
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}
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if ((sp->n_type & ~N_EXT) == N_UNDF)
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continue;
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if (zap_locals && (sp->n_type & N_EXT) == 0)
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continue;
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if ((sp->n_type & N_FN) == 0)
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if (!debugging && (sp->n_type & ~N_EXT) == N_FN)
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continue;
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if (sp->n_un.n_strx == 0)
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continue;
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if (sp->n_value < 0xfe000000)
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if (sp->n_value < text_adr)
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continue;
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if (sp->n_value >= 0xff000000)
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if (sp->n_value > (text_adr + hdr.a_text + hdr.a_data +
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hdr.a_bss))
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continue;
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skip_tests:
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name = old_strtab + sp->n_un.n_strx;
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len = strlen (name);
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@ -150,9 +179,6 @@ char **argv;
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if (len == 0)
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continue;
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if (len >= 2 && name[len - 2] == '.' && name[len - 1] == 'o')
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continue;
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if (strcmp (name, "gcc_compiled.") == 0)
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continue;
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@ -175,10 +201,12 @@ char **argv;
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db_symtabsize_adr = sp->n_value;
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}
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if (db_symtab_adr == 0 || db_symtabsize_adr == 0) {
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/* fprintf (stderr, "couldn't find db_symtab symbols\n");*/
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exit (0);
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}
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if (db_symtab_adr == 0 || db_symtabsize_adr == 0)
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if (!force) {
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fprintf (stderr, "couldn't find db_symtab symbols\n");
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exit (1);
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} else
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exit (0);
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*(int *)new_strtab = new_strtab_size;
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num_new_syms = nsp - new_syms;
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