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sparc32: drop build time btfixup patching

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Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sam Ravnborg 2012-05-14 19:35:50 +02:00 committed by David S. Miller
parent 50544bce4c
commit 51f19cfa76
3 changed files with 10 additions and 449 deletions
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12
arch/sparc/Makefile
View file

@ -33,11 +33,6 @@ UTS_MACHINE := sparc
KBUILD_CFLAGS += -m32 -mcpu=v7 -pipe -mno-fpu -fcall-used-g5 -fcall-used-g7
KBUILD_AFLAGS += -m32 -Wa,-Av8
#LDFLAGS_vmlinux = -N -Ttext 0xf0004000
# Since 2.5.40, the first stage is left not btfix-ed.
# Actual linking is done with "make image".
LDFLAGS_vmlinux = -r
else
#####
# sparc64
@ -72,13 +67,6 @@ libs-y += arch/sparc/lib/
drivers-$(CONFIG_OPROFILE) += arch/sparc/oprofile/
# Export what is needed by arch/sparc/boot/Makefile
export VMLINUX_INIT VMLINUX_MAIN
VMLINUX_INIT := $(head-y) $(init-y)
VMLINUX_MAIN := $(core-y) kernel/ mm/ fs/ ipc/ security/ crypto/ block/
VMLINUX_MAIN += $(patsubst %/, %/lib.a, $(libs-y)) $(libs-y)
VMLINUX_MAIN += $(drivers-y) $(net-y)
ifdef CONFIG_KALLSYMS
export kallsyms.o := .tmp_kallsyms2.o
endif

61
arch/sparc/boot/Makefile
View file

@ -6,8 +6,8 @@
ROOT_IMG := /usr/src/root.img
ELFTOAOUT := elftoaout
hostprogs-y := piggyback btfixupprep
targets := tftpboot.img btfix.o btfix.S image zImage vmlinux.aout
hostprogs-y := piggyback
targets := tftpboot.img image zImage vmlinux.aout
clean-files := System.map
quiet_cmd_elftoaout = ELFTOAOUT $@
@ -17,58 +17,9 @@ quiet_cmd_piggy = PIGGY $@
quiet_cmd_strip = STRIP $@
cmd_strip = $(STRIP) -R .comment -R .note -K sun4u_init -K _end -K _start $< -o $@
ifeq ($(CONFIG_SPARC32),y)
quiet_cmd_btfix = BTFIX $@
cmd_btfix = $(OBJDUMP) -x vmlinux | $(obj)/btfixupprep > $@
quiet_cmd_sysmap = SYSMAP $(obj)/System.map
cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
quiet_cmd_image = LD $@
cmd_image = $(LD) $(LDFLAGS) $(EXTRA_LDFLAGS) $(LDFLAGS_$(@F)) -o $@
define rule_image
$(if $($(quiet)cmd_image), \
echo ' $($(quiet)cmd_image)' &&) \
$(cmd_image); \
$(if $($(quiet)cmd_sysmap), \
echo ' $($(quiet)cmd_sysmap)' &&) \
$(cmd_sysmap) $@ $(obj)/System.map; \
if [ $$? -ne 0 ]; then \
rm -f $@; \
/bin/false; \
fi; \
echo 'cmd_$@ := $(cmd_image)' > $(@D)/.$(@F).cmd
endef
BTOBJS := $(patsubst %/, %/built-in.o, $(VMLINUX_INIT))
BTLIBS := $(patsubst %/, %/built-in.o, $(VMLINUX_MAIN))
LDFLAGS_image := -T arch/sparc/kernel/vmlinux.lds $(BTOBJS) \
--start-group $(BTLIBS) --end-group \
$(kallsyms.o) $(obj)/btfix.o
# Link the final image including btfixup'ed symbols.
# This is a replacement for the link done in the top-level Makefile.
# Note: No dependency on the prerequisite files since that would require
# make to try check if they are updated - and due to changes
# in gcc options (path for example) this would result in
# these files being recompiled for each build.
$(obj)/image: $(obj)/btfix.o FORCE
$(call if_changed_rule,image)
$(obj)/zImage: $(obj)/image
$(call if_changed,strip)
@echo ' kernel: $@ is ready'
$(obj)/btfix.S: $(obj)/btfixupprep vmlinux FORCE
$(call if_changed,btfix)
endif
ifeq ($(CONFIG_SPARC64),y)
# Actual linking
$(obj)/image: vmlinux FORCE
$(call if_changed,strip)
@echo ' kernel: $@ is ready'
$(obj)/zImage: $(obj)/image
$(call if_changed,gzip)
@ -79,6 +30,10 @@ $(obj)/vmlinux.aout: vmlinux FORCE
@echo ' kernel: $@ is ready'
else
$(obj)/zImage: $(obj)/image
$(call if_changed,strip)
@echo ' kernel: $@ is ready'
# The following lines make a readable image for U-Boot.
# uImage - Binary file read by U-boot
# uImage.o - object file of uImage for loading with a
@ -107,6 +62,10 @@ $(obj)/uImage: $(obj)/image.gz
endif
$(obj)/image: vmlinux FORCE
$(call if_changed,strip)
@echo ' kernel: $@ is ready'
$(obj)/tftpboot.img: $(obj)/image $(obj)/piggyback System.map $(ROOT_IMG) FORCE
$(call if_changed,elftoaout)
$(call if_changed,piggy)

386
arch/sparc/boot/btfixupprep.c
View file

@ -1,386 +0,0 @@
/*
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;
static void fatal(void) __attribute__((noreturn));
static void fatal(void)
{
fprintf(stderr, "Malformed output from objdump\n%s\n", buffer);
exit(1);
}
static 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;
}
static 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-initialized 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-initialized 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);
}