387 lines
11 KiB
C
387 lines
11 KiB
C
/*
|
|
Simple utility to prepare vmlinux image for sparc.
|
|
Resolves all BTFIXUP uses and settings and creates
|
|
a special .s object to link to the image.
|
|
|
|
Copyright (C) 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <ctype.h>
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
#include <malloc.h>
|
|
|
|
#define MAXSYMS 1024
|
|
|
|
static char *symtab = "SYMBOL TABLE:";
|
|
static char *relrec = "RELOCATION RECORDS FOR [";
|
|
static int rellen;
|
|
static int symlen;
|
|
int mode;
|
|
|
|
struct _btfixup;
|
|
|
|
typedef struct _btfixuprel {
|
|
char *sect;
|
|
unsigned long offset;
|
|
struct _btfixup *f;
|
|
int frel;
|
|
struct _btfixuprel *next;
|
|
} btfixuprel;
|
|
|
|
typedef struct _btfixup {
|
|
int type;
|
|
int setinitval;
|
|
unsigned int initval;
|
|
char *initvalstr;
|
|
char *name;
|
|
btfixuprel *rel;
|
|
} btfixup;
|
|
|
|
btfixup array[MAXSYMS];
|
|
int last = 0;
|
|
char buffer[1024];
|
|
unsigned long lastfoffset = -1;
|
|
unsigned long lastfrelno;
|
|
btfixup *lastf;
|
|
|
|
void fatal(void) __attribute__((noreturn));
|
|
void fatal(void)
|
|
{
|
|
fprintf(stderr, "Malformed output from objdump\n%s\n", buffer);
|
|
exit(1);
|
|
}
|
|
|
|
btfixup *find(int type, char *name)
|
|
{
|
|
int i;
|
|
for (i = 0; i < last; i++) {
|
|
if (array[i].type == type && !strcmp(array[i].name, name))
|
|
return array + i;
|
|
}
|
|
array[last].type = type;
|
|
array[last].name = strdup(name);
|
|
array[last].setinitval = 0;
|
|
if (!array[last].name) fatal();
|
|
array[last].rel = NULL;
|
|
last++;
|
|
if (last >= MAXSYMS) {
|
|
fprintf(stderr, "Ugh. Something strange. More than %d different BTFIXUP symbols\n", MAXSYMS);
|
|
exit(1);
|
|
}
|
|
return array + last - 1;
|
|
}
|
|
|
|
void set_mode (char *buffer)
|
|
{
|
|
for (mode = 0;; mode++)
|
|
if (buffer[mode] < '0' || buffer[mode] > '9')
|
|
break;
|
|
if (mode != 8 && mode != 16)
|
|
fatal();
|
|
}
|
|
|
|
|
|
int main(int argc,char **argv)
|
|
{
|
|
char *p, *q;
|
|
char *sect;
|
|
int i, j, k;
|
|
unsigned int initval;
|
|
int shift;
|
|
btfixup *f;
|
|
btfixuprel *r, **rr;
|
|
unsigned long offset;
|
|
char *initvalstr;
|
|
|
|
symlen = strlen(symtab);
|
|
while (fgets (buffer, 1024, stdin) != NULL)
|
|
if (!strncmp (buffer, symtab, symlen))
|
|
goto main0;
|
|
fatal();
|
|
main0:
|
|
rellen = strlen(relrec);
|
|
while (fgets (buffer, 1024, stdin) != NULL)
|
|
if (!strncmp (buffer, relrec, rellen))
|
|
goto main1;
|
|
fatal();
|
|
main1:
|
|
sect = malloc(strlen (buffer + rellen) + 1);
|
|
if (!sect) fatal();
|
|
strcpy (sect, buffer + rellen);
|
|
p = strchr (sect, ']');
|
|
if (!p) fatal();
|
|
*p = 0;
|
|
if (fgets (buffer, 1024, stdin) == NULL)
|
|
fatal();
|
|
while (fgets (buffer, 1024, stdin) != NULL) {
|
|
int nbase;
|
|
if (!strncmp (buffer, relrec, rellen))
|
|
goto main1;
|
|
if (mode == 0)
|
|
set_mode (buffer);
|
|
p = strchr (buffer, '\n');
|
|
if (p) *p = 0;
|
|
if (strlen (buffer) < 22+mode)
|
|
continue;
|
|
if (strncmp (buffer + mode, " R_SPARC_", 9))
|
|
continue;
|
|
nbase = 27 - 8 + mode;
|
|
if (buffer[nbase] != '_' || buffer[nbase+1] != '_' || buffer[nbase+2] != '_')
|
|
continue;
|
|
switch (buffer[nbase+3]) {
|
|
case 'f': /* CALL */
|
|
case 'b': /* BLACKBOX */
|
|
case 's': /* SIMM13 */
|
|
case 'a': /* HALF */
|
|
case 'h': /* SETHI */
|
|
case 'i': /* INT */
|
|
break;
|
|
default:
|
|
continue;
|
|
}
|
|
p = strchr (buffer + nbase+5, '+');
|
|
if (p) *p = 0;
|
|
shift = nbase + 5;
|
|
if (buffer[nbase+4] == 's' && buffer[nbase+5] == '_') {
|
|
shift = nbase + 6;
|
|
if (strcmp (sect, ".init.text")) {
|
|
fprintf(stderr,
|
|
"Wrong use of '%s' BTFIXUPSET in '%s' section.\n"
|
|
"BTFIXUPSET_CALL can be used only in"
|
|
" __init sections\n",
|
|
buffer + shift, sect);
|
|
exit(1);
|
|
}
|
|
} else if (buffer[nbase+4] != '_')
|
|
continue;
|
|
if (!strcmp (sect, ".text.exit"))
|
|
continue;
|
|
if (strcmp (sect, ".text") &&
|
|
strcmp (sect, ".init.text") &&
|
|
strcmp (sect, ".fixup") &&
|
|
(strcmp (sect, "__ksymtab") || buffer[nbase+3] != 'f')) {
|
|
if (buffer[nbase+3] == 'f')
|
|
fprintf(stderr,
|
|
"Wrong use of '%s' in '%s' section.\n"
|
|
" It can be used only in .text, .init.text,"
|
|
" .fixup and __ksymtab\n",
|
|
buffer + shift, sect);
|
|
else
|
|
fprintf(stderr,
|
|
"Wrong use of '%s' in '%s' section.\n"
|
|
" It can be only used in .text, .init.text,"
|
|
" and .fixup\n", buffer + shift, sect);
|
|
exit(1);
|
|
}
|
|
p = strstr (buffer + shift, "__btset_");
|
|
if (p && buffer[nbase+4] == 's') {
|
|
fprintf(stderr, "__btset_ in BTFIXUP name can only be used when defining the variable, not for setting\n%s\n", buffer);
|
|
exit(1);
|
|
}
|
|
initval = 0;
|
|
initvalstr = NULL;
|
|
if (p) {
|
|
if (p[8] != '0' || p[9] != 'x') {
|
|
fprintf(stderr, "Pre-initialized values can be only initialized with hexadecimal constants starting 0x\n%s\n", buffer);
|
|
exit(1);
|
|
}
|
|
initval = strtoul(p + 10, &q, 16);
|
|
if (*q || !initval) {
|
|
fprintf(stderr, "Pre-initialized values can be only in the form name__btset_0xXXXXXXXX where X are hex digits.\nThey cannot be name__btset_0x00000000 though. Use BTFIXUPDEF_XX instead of BTFIXUPDEF_XX_INIT then.\n%s\n", buffer);
|
|
exit(1);
|
|
}
|
|
initvalstr = p + 10;
|
|
*p = 0;
|
|
}
|
|
f = find(buffer[nbase+3], buffer + shift);
|
|
if (buffer[nbase+4] == 's')
|
|
continue;
|
|
switch (buffer[nbase+3]) {
|
|
case 'f':
|
|
if (initval) {
|
|
fprintf(stderr, "Cannot use pre-initalized fixups for calls\n%s\n", buffer);
|
|
exit(1);
|
|
}
|
|
if (!strcmp (sect, "__ksymtab")) {
|
|
if (strncmp (buffer + mode+9, "32 ", 10)) {
|
|
fprintf(stderr, "BTFIXUP_CALL in EXPORT_SYMBOL results in relocation other than R_SPARC_32\n\%s\n", buffer);
|
|
exit(1);
|
|
}
|
|
} else if (strncmp (buffer + mode+9, "WDISP30 ", 10) &&
|
|
strncmp (buffer + mode+9, "HI22 ", 10) &&
|
|
strncmp (buffer + mode+9, "LO10 ", 10)) {
|
|
fprintf(stderr, "BTFIXUP_CALL results in relocation other than R_SPARC_WDISP30, R_SPARC_HI22 or R_SPARC_LO10\n%s\n", buffer);
|
|
exit(1);
|
|
}
|
|
break;
|
|
case 'b':
|
|
if (initval) {
|
|
fprintf(stderr, "Cannot use pre-initialized fixups for blackboxes\n%s\n", buffer);
|
|
exit(1);
|
|
}
|
|
if (strncmp (buffer + mode+9, "HI22 ", 10)) {
|
|
fprintf(stderr, "BTFIXUP_BLACKBOX results in relocation other than R_SPARC_HI22\n%s\n", buffer);
|
|
exit(1);
|
|
}
|
|
break;
|
|
case 's':
|
|
if (initval + 0x1000 >= 0x2000) {
|
|
fprintf(stderr, "Wrong initializer for SIMM13. Has to be from $fffff000 to $00000fff\n%s\n", buffer);
|
|
exit(1);
|
|
}
|
|
if (strncmp (buffer + mode+9, "13 ", 10)) {
|
|
fprintf(stderr, "BTFIXUP_SIMM13 results in relocation other than R_SPARC_13\n%s\n", buffer);
|
|
exit(1);
|
|
}
|
|
break;
|
|
case 'a':
|
|
if (initval + 0x1000 >= 0x2000 && (initval & 0x3ff)) {
|
|
fprintf(stderr, "Wrong initializer for HALF.\n%s\n", buffer);
|
|
exit(1);
|
|
}
|
|
if (strncmp (buffer + mode+9, "13 ", 10)) {
|
|
fprintf(stderr, "BTFIXUP_HALF results in relocation other than R_SPARC_13\n%s\n", buffer);
|
|
exit(1);
|
|
}
|
|
break;
|
|
case 'h':
|
|
if (initval & 0x3ff) {
|
|
fprintf(stderr, "Wrong initializer for SETHI. Cannot have set low 10 bits\n%s\n", buffer);
|
|
exit(1);
|
|
}
|
|
if (strncmp (buffer + mode+9, "HI22 ", 10)) {
|
|
fprintf(stderr, "BTFIXUP_SETHI results in relocation other than R_SPARC_HI22\n%s\n", buffer);
|
|
exit(1);
|
|
}
|
|
break;
|
|
case 'i':
|
|
if (initval) {
|
|
fprintf(stderr, "Cannot use pre-initalized fixups for INT\n%s\n", buffer);
|
|
exit(1);
|
|
}
|
|
if (strncmp (buffer + mode+9, "HI22 ", 10) && strncmp (buffer + mode+9, "LO10 ", 10)) {
|
|
fprintf(stderr, "BTFIXUP_INT results in relocation other than R_SPARC_HI22 and R_SPARC_LO10\n%s\n", buffer);
|
|
exit(1);
|
|
}
|
|
break;
|
|
}
|
|
if (!f->setinitval) {
|
|
f->initval = initval;
|
|
if (initvalstr) {
|
|
f->initvalstr = strdup(initvalstr);
|
|
if (!f->initvalstr) fatal();
|
|
}
|
|
f->setinitval = 1;
|
|
} else if (f->initval != initval) {
|
|
fprintf(stderr, "Btfixup %s previously used with initializer %s which doesn't match with current initializer\n%s\n",
|
|
f->name, f->initvalstr ? : "0x00000000", buffer);
|
|
exit(1);
|
|
} else if (initval && strcmp(f->initvalstr, initvalstr)) {
|
|
fprintf(stderr, "Btfixup %s previously used with initializer %s which doesn't match with current initializer.\n"
|
|
"Initializers have to match literally as well.\n%s\n",
|
|
f->name, f->initvalstr, buffer);
|
|
exit(1);
|
|
}
|
|
offset = strtoul(buffer, &q, 16);
|
|
if (q != buffer + mode || (!offset && (mode == 8 ? strncmp (buffer, "00000000 ", 9) : strncmp (buffer, "0000000000000000 ", 17)))) {
|
|
fprintf(stderr, "Malformed relocation address in\n%s\n", buffer);
|
|
exit(1);
|
|
}
|
|
for (k = 0, r = f->rel, rr = &f->rel; r; rr = &r->next, r = r->next, k++)
|
|
if (r->offset == offset && !strcmp(r->sect, sect)) {
|
|
fprintf(stderr, "Ugh. One address has two relocation records\n");
|
|
exit(1);
|
|
}
|
|
*rr = malloc(sizeof(btfixuprel));
|
|
if (!*rr) fatal();
|
|
(*rr)->offset = offset;
|
|
(*rr)->f = NULL;
|
|
if (buffer[nbase+3] == 'f') {
|
|
lastf = f;
|
|
lastfoffset = offset;
|
|
lastfrelno = k;
|
|
} else if (lastfoffset + 4 == offset) {
|
|
(*rr)->f = lastf;
|
|
(*rr)->frel = lastfrelno;
|
|
}
|
|
(*rr)->sect = sect;
|
|
(*rr)->next = NULL;
|
|
}
|
|
printf("! Generated by btfixupprep. Do not edit.\n\n");
|
|
printf("\t.section\t\".data.init\",#alloc,#write\n\t.align\t4\n\n");
|
|
printf("\t.global\t___btfixup_start\n___btfixup_start:\n\n");
|
|
for (i = 0; i < last; i++) {
|
|
f = array + i;
|
|
printf("\t.global\t___%cs_%s\n", f->type, f->name);
|
|
if (f->type == 'f')
|
|
printf("___%cs_%s:\n\t.word 0x%08x,0,0,", f->type, f->name, f->type << 24);
|
|
else
|
|
printf("___%cs_%s:\n\t.word 0x%08x,0,", f->type, f->name, f->type << 24);
|
|
for (j = 0, r = f->rel; r != NULL; j++, r = r->next);
|
|
if (j)
|
|
printf("%d\n\t.word\t", j * 2);
|
|
else
|
|
printf("0\n");
|
|
for (r = f->rel, j--; r != NULL; j--, r = r->next) {
|
|
if (!strcmp (r->sect, ".text"))
|
|
printf ("_stext+0x%08lx", r->offset);
|
|
else if (!strcmp (r->sect, ".init.text"))
|
|
printf ("__init_begin+0x%08lx", r->offset);
|
|
else if (!strcmp (r->sect, "__ksymtab"))
|
|
printf ("__start___ksymtab+0x%08lx", r->offset);
|
|
else if (!strcmp (r->sect, ".fixup"))
|
|
printf ("__start___fixup+0x%08lx", r->offset);
|
|
else
|
|
fatal();
|
|
if (f->type == 'f' || !r->f)
|
|
printf (",0");
|
|
else
|
|
printf (",___fs_%s+0x%08x", r->f->name, (4 + r->frel*2)*4 + 4);
|
|
if (j) printf (",");
|
|
else printf ("\n");
|
|
}
|
|
printf("\n");
|
|
}
|
|
printf("\n\t.global\t___btfixup_end\n___btfixup_end:\n");
|
|
printf("\n\n! Define undefined references\n\n");
|
|
for (i = 0; i < last; i++) {
|
|
f = array + i;
|
|
if (f->type == 'f') {
|
|
printf("\t.global\t___f_%s\n", f->name);
|
|
printf("___f_%s:\n", f->name);
|
|
}
|
|
}
|
|
printf("\tretl\n\t nop\n\n");
|
|
for (i = 0; i < last; i++) {
|
|
f = array + i;
|
|
if (f->type != 'f') {
|
|
if (!f->initval) {
|
|
printf("\t.global\t___%c_%s\n", f->type, f->name);
|
|
printf("___%c_%s = 0\n", f->type, f->name);
|
|
} else {
|
|
printf("\t.global\t___%c_%s__btset_0x%s\n", f->type, f->name, f->initvalstr);
|
|
printf("___%c_%s__btset_0x%s = 0x%08x\n", f->type, f->name, f->initvalstr, f->initval);
|
|
}
|
|
}
|
|
}
|
|
printf("\n\n");
|
|
exit(0);
|
|
}
|