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[BZ #262]

Browse Source 
Update.
2004-07-15  Jakub Jelinek  <jakub@redhat.com>

	[BZ #262]
	* sysdeps/i386/elf/start.S (_start): Use @GOT instead of @GOTOFF
	for main.
	* elf/Makefile: Add rules to build and run tst-pie1.
	* elf/tst-pie1.c: New test.
	* elf/tst-piemod1.c: New file.
This commit is contained in:
Ulrich Drepper 2004-07-16 17:56:45 +00:00
parent 290639c3b4
commit f17ed1a9ee
5 changed files with 63 additions and 4 deletions
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9
ChangeLog
View File

@ -1,3 +1,12 @@
2004-07-15 Jakub Jelinek <jakub@redhat.com>
[BZ #262]
* sysdeps/i386/elf/start.S (_start): Use @GOT instead of @GOTOFF
for main.
* elf/Makefile: Add rules to build and run tst-pie1.
* elf/tst-pie1.c: New test.
* elf/tst-piemod1.c: New file.
2004-07-14 Jakub Jelinek <jakub@redhat.com>
[BZ #266]

27
elf/Makefile
View File

@ -80,7 +80,7 @@ distribute := rtld-Rules \
nodel2mod1.c nodel2mod2.c nodel2mod3.c \
reldep9.c reldep9mod1.c reldep9mod2.c reldep9mod3.c \
tst-array1.exp tst-array2.exp tst-array4.exp \
tst-array2dep.c \
tst-array2dep.c tst-piemod1.c \
tst-execstack-mod.c tst-dlmodcount.c \
check-textrel.c dl-sysdep.h
@ -160,6 +160,9 @@ tests-nodelete-yes = nodelete nodelete2
tests-nodlopen-yes = nodlopen nodlopen2
tests-execstack-yes = tst-execstack tst-execstack-needed tst-execstack-prog
endif
ifeq (yesyes,$(have-fpie)$(build-shared))
tests: $(objpfx)tst-pie1.out
endif
modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \
testobj1_1 failobj constload2 constload3 unloadmod \
dep1 dep2 dep3 dep4 $(modules-vis-$(have-protected)) \
@ -185,6 +188,9 @@ modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \
ifeq (yes,$(have-initfini-array))
modules-names += tst-array2dep
endif
ifeq (yesyes,$(have-fpie)$(build-shared))
modules-names += tst-piemod1
endif
modules-vis-yes = vismod1 vismod2 vismod3
modules-nodelete-yes = nodelmod1 nodelmod2 nodelmod3 nodelmod4 \
nodel2mod1 nodel2mod2 nodel2mod3
@ -705,6 +711,25 @@ $(objpfx)tst-array4.out: $(objpfx)tst-array4 $(objpfx)tst-array2dep.so
$< > $@
cmp $@ tst-array4.exp > /dev/null
ifeq (yesyes,$(have-fpie)$(build-shared))
CFLAGS-tst-pie1.c += -fpie
$(objpfx)tst-pie1.out: $(objpfx)tst-pie1
$(elf-objpfx)$(rtld-installed-name) \
--library-path $(rpath-link)$(patsubst %,:%,$(sysdep-library-path)) \
$< > $@
$(objpfx)tst-pie1: $(objpfx)tst-pie1.o $(objpfx)tst-piemod1.so
$(LINK.o) -pie -Wl,-O1 \
$(sysdep-LDFLAGS) $(config-LDFLAGS) \
$(extra-B-$(@F:lib%.so=%).so) -B$(csu-objpfx) \
$(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
$(LDFLAGS) $(LDFLAGS-$(@F)) \
-L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link) \
-o $@ $(objpfx)tst-pie1.o $(objpfx)tst-piemod1.so \
$(common-objpfx)libc_nonshared.a
endif
check-textrel-CFLAGS = -O -Wall -D_XOPEN_SOURCE=600 -D_BSD_SOURCE
$(objpfx)check-textrel: check-textrel.c
$(native-compile)

5
elf/tst-pie1.c Normal file
View File

@ -0,0 +1,5 @@
int
foo (void)
{
return 34;
}

20
elf/tst-piemod1.c Normal file
View File

@ -0,0 +1,20 @@
#include <stdio.h>
int
foo (void)
{
return 21;
}
int
main (void)
{
int val = foo ();
if (val != 34)
{
printf ("foo () returned %d\n", val);
return 1;
}
return 0;
}

6
sysdeps/i386/elf/start.S
View File

@ -1,5 +1,6 @@
/* Startup code compliant to the ELF i386 ABI.
Copyright (C) 1995-1998,2000,2001,2002,2003 Free Software Foundation, Inc.
Copyright (C) 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2004
Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -81,8 +82,7 @@ _start:
pushl %ecx /* Push second argument: argv. */
pushl %esi /* Push first argument: argc. */
leal BP_SYM (main)@GOTOFF(%ebx), %eax
pushl %eax
pushl BP_SYM (main)@GOT(%ebx)
/* Call the user's main function, and exit with its value.
But let the libc call main. */