351 lines
8.7 KiB
C
351 lines
8.7 KiB
C
/* $NetBSD: nlist_coff.c,v 1.5 2001/07/22 13:34:17 wiz Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1996 Christopher G. Demetriou
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed for the
|
|
* NetBSD Project. See http://www.netbsd.org/ for
|
|
* information about NetBSD.
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>>
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#ifndef lint
|
|
__RCSID("$NetBSD: nlist_coff.c,v 1.5 2001/07/22 13:34:17 wiz Exp $");
|
|
#endif /* not lint */
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include <a.out.h>
|
|
#include <db.h>
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <kvm.h>
|
|
#include <limits.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include "extern.h"
|
|
|
|
#ifdef NLIST_COFF
|
|
#include <sys/exec_coff.h>
|
|
|
|
typedef struct nlist NLIST;
|
|
#define _strx n_un.n_strx
|
|
#define _name n_un.n_name
|
|
|
|
#define badfmt(str) \
|
|
do { \
|
|
warnx("%s: %s: %s", kfile, str, strerror(EFTYPE)); \
|
|
punt(); \
|
|
} while (0)
|
|
|
|
#define check(off, size) ((off < 0) || (off + size > mappedsize))
|
|
#define BAD do { rv = -1; goto out; } while (0)
|
|
#define BADUNMAP do { rv = -1; goto unmap; } while (0)
|
|
|
|
static const char *kfile;
|
|
|
|
int
|
|
create_knlist_coff(name, db)
|
|
const char *name;
|
|
DB *db;
|
|
{
|
|
struct coff_filehdr *filehdrp;
|
|
struct coff_aouthdr *aouthdrp;
|
|
struct stat st;
|
|
struct nlist nbuf;
|
|
DBT key, data;
|
|
char *mappedfile, *symname, *fsymname;
|
|
size_t mappedsize, symnamesize, fsymnamesize;
|
|
u_long symhdroff, extrstroff;
|
|
u_long symhdrsize, i, nesyms;
|
|
int fd, rv;
|
|
struct external_syment *syment;
|
|
u_long soff;
|
|
u_long val;
|
|
char snamebuf[16];
|
|
|
|
rv = -1;
|
|
|
|
/*
|
|
* Open and map the whole file. If we can't open/stat it,
|
|
* something bad is going on so we punt.
|
|
*/
|
|
kfile = name;
|
|
if ((fd = open(name, O_RDONLY, 0)) < 0) {
|
|
warn("%s", kfile);
|
|
punt();
|
|
}
|
|
if (fstat(fd, &st) < 0) {
|
|
warn("%s", kfile);
|
|
punt();
|
|
}
|
|
if (st.st_size > SIZE_T_MAX)
|
|
BAD;
|
|
|
|
/*
|
|
* Map the file in its entirety.
|
|
*/
|
|
mappedsize = st.st_size;
|
|
mappedfile = mmap(NULL, mappedsize, PROT_READ, MAP_FILE|MAP_PRIVATE,
|
|
fd, 0);
|
|
if (mappedfile == (char *)-1)
|
|
BAD;
|
|
|
|
/*
|
|
* Make sure we can access the executable's header
|
|
* directly, and make sure the recognize the executable
|
|
* as an COFF binary.
|
|
*/
|
|
if (check(0, sizeof *filehdrp))
|
|
BADUNMAP;
|
|
filehdrp = (struct coff_filehdr *)&mappedfile[0];
|
|
|
|
if (COFF_BADMAG(filehdrp))
|
|
BADUNMAP;
|
|
|
|
/*
|
|
* We've recognized it as an COFF binary. From here
|
|
* on out, all errors are fatal.
|
|
*/
|
|
|
|
aouthdrp = (struct coff_aouthdr *)
|
|
&mappedfile[sizeof(struct coff_filehdr)];
|
|
|
|
/*
|
|
* Find the symbol list and string table.
|
|
*/
|
|
symhdroff = filehdrp->f_symptr;
|
|
symhdrsize = filehdrp->f_nsyms;
|
|
extrstroff = symhdroff + symhdrsize*COFF_ES_SYMENTSZ;
|
|
|
|
#ifdef DEGBU
|
|
printf("sizeof syment = %d\n",sizeof(struct external_syment ));
|
|
printf("symhdroff = 0x%lx,symhdrsize=%ld,stroff = 0x%lx",
|
|
symhdroff,symhdrsize, extrstroff);
|
|
#endif
|
|
|
|
if (symhdrsize == 0)
|
|
badfmt("stripped");
|
|
|
|
/*
|
|
* Set up the data item, pointing to a nlist structure.
|
|
* which we fill in for each symbol.
|
|
*/
|
|
data.data = (u_char *)&nbuf;
|
|
data.size = sizeof(nbuf);
|
|
|
|
/*
|
|
* Create a buffer (to be expanded later, if necessary)
|
|
* to hold symbol names after we've added underscores
|
|
* to them.
|
|
*/
|
|
symnamesize = 1024;
|
|
if ((symname = malloc(symnamesize)) == NULL) {
|
|
warn("malloc");
|
|
punt();
|
|
}
|
|
|
|
nesyms = filehdrp->f_nsyms;
|
|
|
|
/*
|
|
* Read each symbol and enter it into the database.
|
|
*/
|
|
for (i = 0; i < nesyms; i++) {
|
|
|
|
/*
|
|
* Find symbol name, copy it (with added underscore) to
|
|
* temporary buffer, and prepare the database key for
|
|
* insertion.
|
|
*/
|
|
syment = (struct external_syment *)&mappedfile[symhdroff +
|
|
COFF_ES_SYMENTSZ*i];
|
|
|
|
if(syment->e_sclass[0] != 2){
|
|
continue;
|
|
}
|
|
|
|
if(syment->e.e.e_zeroes[0]){
|
|
if( syment->e.e_name[COFF_ES_SYMNMLEN-1] ){
|
|
memcpy( snamebuf, syment->e.e_name,
|
|
COFF_ES_SYMNMLEN);
|
|
snamebuf[COFF_ES_SYMNMLEN] = '\0';
|
|
fsymname = snamebuf;
|
|
}
|
|
else{
|
|
fsymname = syment->e.e_name ;
|
|
}
|
|
fsymnamesize = strlen(fsymname) + 1;
|
|
|
|
#ifdef DEBUG
|
|
printf("%s\n",fsymname );
|
|
#endif
|
|
}
|
|
else{
|
|
memcpy(&soff, syment->e.e.e_offset, sizeof(long));
|
|
fsymname = &mappedfile[extrstroff+soff];
|
|
fsymnamesize = strlen(fsymname) + 1;
|
|
|
|
#ifdef DEBUG
|
|
printf("*%s\n",fsymname );
|
|
#endif
|
|
}
|
|
|
|
while (symnamesize < fsymnamesize + 1) {
|
|
symnamesize *= 2;
|
|
if ((symname = realloc(symname, symnamesize)) == NULL){
|
|
warn("malloc");
|
|
punt();
|
|
}
|
|
}
|
|
#if 0
|
|
strcpy(symname, "_");
|
|
strcat(symname, fsymname);
|
|
#else
|
|
strcpy(symname, fsymname);
|
|
#endif
|
|
|
|
key.data = symname;
|
|
key.size = strlen((char *)key.data);
|
|
|
|
/*
|
|
* Convert the symbol information into an nlist structure,
|
|
* as best we can.
|
|
*/
|
|
memcpy(&val, syment->e_value, sizeof( long ));
|
|
nbuf.n_value = val;
|
|
nbuf.n_type = N_EXT; /* XXX */
|
|
nbuf.n_desc = 0; /* XXX */
|
|
nbuf.n_other = 0; /* XXX */
|
|
|
|
/*
|
|
* Enter the symbol into the database.
|
|
*/
|
|
if (db->put(db, &key, &data, 0)) {
|
|
warn("record enter");
|
|
punt();
|
|
}
|
|
/*
|
|
* If it's the kernel version string, we've gotta keep
|
|
* some extra data around. Under a separate key,
|
|
* we enter the first line (i.e. up to the first newline,
|
|
* with the newline replaced by a NUL to terminate the
|
|
* entered string) of the version string.
|
|
*/
|
|
if (strcmp((char *)key.data, VRS_SYM) == 0) {
|
|
unsigned long vma;
|
|
char *tmpcp;
|
|
struct coff_scnhdr *sh;
|
|
int i;
|
|
|
|
key.data = (u_char *)VRS_KEY;
|
|
key.size = sizeof(VRS_KEY) - 1;
|
|
|
|
/* Find the version string, relative to start */
|
|
vma = nbuf.n_value;
|
|
|
|
#ifdef DEBUG
|
|
printf("vma = %lx,tstart = %lx, dstart=%lx\n",
|
|
vma, aouthdrp->a_tstart,
|
|
aouthdrp->a_dstart);
|
|
printf("tsize = %lx, dsize=%lx\n",
|
|
aouthdrp->a_tsize,
|
|
aouthdrp->a_dsize);
|
|
#endif
|
|
if (aouthdrp->a_tstart <= vma &&
|
|
vma < (aouthdrp->a_tstart + aouthdrp->a_tsize)){
|
|
for(i=0;i<filehdrp->f_nscns;i++){
|
|
sh = (struct coff_scnhdr *)
|
|
&mappedfile[COFF_HDR_SIZE+
|
|
i*sizeof(struct
|
|
coff_scnhdr)];
|
|
if( sh->s_flags == COFF_STYP_TEXT ){
|
|
break;
|
|
}
|
|
}
|
|
vma = vma - sh->s_vaddr + sh->s_scnptr;
|
|
}
|
|
else if (aouthdrp->a_dstart <= vma &&
|
|
vma < (aouthdrp->a_dstart + aouthdrp->a_dsize)){
|
|
for(i=0;i<filehdrp->f_nscns;i++){
|
|
sh = (struct coff_scnhdr *)
|
|
&mappedfile[COFF_HDR_SIZE+
|
|
i*sizeof(struct
|
|
coff_scnhdr)];
|
|
if( sh->s_flags == COFF_STYP_DATA ){
|
|
break;
|
|
}
|
|
}
|
|
vma = vma - sh->s_vaddr + sh->s_scnptr;
|
|
}
|
|
else {
|
|
warn("version string neither text nor data");
|
|
punt();
|
|
}
|
|
data.data = strdup(&mappedfile[vma]);
|
|
|
|
#ifdef DEBUG
|
|
printf("vma = %lx,version = %s\n",
|
|
vma, (char *)data.data);
|
|
#endif
|
|
|
|
/* assumes newline terminates version. */
|
|
if ((tmpcp = strchr(data.data, '\n')) != NULL)
|
|
*tmpcp = '\0';
|
|
data.size = strlen((char *)data.data);
|
|
|
|
if (db->put(db, &key, &data, 0)) {
|
|
warn("record enter");
|
|
punt();
|
|
}
|
|
|
|
/* free pointer created by strdup(). */
|
|
free(data.data);
|
|
|
|
/* Restore to original values */
|
|
data.data = (u_char *)&nbuf;
|
|
data.size = sizeof(nbuf);
|
|
}
|
|
} /* End of for() */
|
|
|
|
rv = 0;
|
|
|
|
unmap:
|
|
munmap(mappedfile, mappedsize);
|
|
out:
|
|
return (rv);
|
|
}
|
|
|
|
#endif /* NLIST_COFF */
|