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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)
This commit is contained in:
mycroft 1993-07-19 16:50:10 +00:00
parent 14b1a9b7a9
commit 4f59ef7ee3
1 changed files with 43 additions and 15 deletions
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58
usr.sbin/dbsym/dbsym.c
View File

@ -4,6 +4,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <a.out.h>
#include <stab.h>
#include <machine/param.h>
#define FILE_OFFSET(vadr) (((vadr) - text_adr) - N_DATADDR(hdr) + \
@ -27,11 +28,13 @@ int db_symtab_adr;
int avail;
int force = 0;
int zap_locals = 0;
int debugging = 0;
usage ()
{
fprintf (stderr, "usage: dbsym [-l] [-T addr] file\n");
fprintf (stderr, "usage: dbsym [-fgx] [-T addr] file\n");
exit (1);
}
@ -50,9 +53,15 @@ char **argv;
int len;
while ((c = getopt (argc, argv, "lT:")) != EOF) {
while ((c = getopt (argc, argv, "fgxT:")) != EOF) {
switch (c) {
case 'l':
case 'f':
force = 1;
break;
case 'g':
debugging = 1;
break;
case 'x':
zap_locals = 1;
break;
case 'T':
@ -125,24 +134,44 @@ char **argv;
nsp = new_syms;
for (i = 0, sp = old_syms; i < num_old_syms; i++, sp++) {
if (sp->n_type & N_STAB)
if (zap_locals && !(sp->n_type & N_EXT))
continue;
if (zap_locals && (sp->n_type & N_EXT) == 0)
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 ((sp->n_type & N_FN) == 0)
if (!debugging && (sp->n_type & ~N_EXT) == N_FN)
continue;
if (sp->n_un.n_strx == 0)
continue;
if (sp->n_value < 0xfe000000)
if (sp->n_value < text_adr)
continue;
if (sp->n_value >= 0xff000000)
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);
@ -150,9 +179,6 @@ char **argv;
if (len == 0)
continue;
if (len >= 2 && name[len - 2] == '.' && name[len - 1] == 'o')
continue;
if (strcmp (name, "gcc_compiled.") == 0)
continue;
@ -175,10 +201,12 @@ char **argv;
db_symtabsize_adr = sp->n_value;
}
if (db_symtab_adr == 0 || db_symtabsize_adr == 0) {
/* fprintf (stderr, "couldn't find db_symtab symbols\n");*/
exit (0);
}
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;