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Fix __longjmp_chk on s390/s390x.

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s390/s390x hasn't been updated to handle alternate stacks properly.
This commit is contained in:
Jakub Jelinek 2009-09-08 16:00:25 -07:00 committed by Ulrich Drepper
parent 3d60eb1734
commit 6dfeb5245b
3 changed files with 37 additions and 2 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2009-09-08 Jakub Jelinek <jakub@redhat.com>
* sysdeps/s390/s390-32/____longjmp_chk.c: Removed.
* sysdeps/s390/s390-64/____longjmp_chk.c: Removed.
* sysdeps/unix/sysv/linux/s390/s390-32/____longjmp_chk.c: New file.
* sysdeps/unix/sysv/linux/s390/s390-64/____longjmp_chk.c: New file.
2009-09-07 Ulrich Drepper <drepper@redhat.com>
* locale/programs/ld-collate.c (struct locale_collate_t): Add

16
sysdeps/s390/s390-32/____longjmp_chk.c → sysdeps/unix/sysv/linux/s390/s390-32/____longjmp_chk.c
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@ -24,6 +24,9 @@
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <stdint.h>
#include <signal.h>
#include <sys/syscall.h>
#define __longjmp ____longjmp_chk
@ -35,7 +38,18 @@
__asm ("lr %0, %%r15" : "=r" (cur_sp)); \
new_sp ^= guard; \
if (new_sp < cur_sp) \
__fortify_fail ("longjmp causes uninitialized stack frame"); \
{ \
stack_t oss; \
INTERNAL_SYSCALL_DECL (err); \
int res = INTERNAL_SYSCALL (sigaltstack, err, 2, NULL, &oss); \
if (!INTERNAL_SYSCALL_ERROR_P (res, err)) \
{ \
if ((oss.ss_flags & SS_ONSTACK) == 0 \
|| ((uintptr_t) (oss.ss_sp + oss.ss_size) - new_sp \
>= oss.ss_size)) \
__fortify_fail ("longjmp causes uninitialized stack frame");\
} \
} \
} while (0)
#include "__longjmp.c"

16
sysdeps/s390/s390-64/____longjmp_chk.c → sysdeps/unix/sysv/linux/s390/s390-64/____longjmp_chk.c
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@ -24,6 +24,9 @@
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <stdint.h>
#include <signal.h>
#include <sys/syscall.h>
#define __longjmp ____longjmp_chk
@ -35,7 +38,18 @@
__asm ("lgr %0, %%r15" : "=r" (cur_sp)); \
new_sp ^= guard; \
if (new_sp < cur_sp) \
__fortify_fail ("longjmp causes uninitialized stack frame"); \
{ \
stack_t oss; \
INTERNAL_SYSCALL_DECL (err); \
int res = INTERNAL_SYSCALL (sigaltstack, err, 2, NULL, &oss); \
if (!INTERNAL_SYSCALL_ERROR_P (res, err)) \
{ \
if ((oss.ss_flags & SS_ONSTACK) == 0 \
|| ((uintptr_t) (oss.ss_sp + oss.ss_size) - new_sp \
>= oss.ss_size)) \
__fortify_fail ("longjmp causes uninitialized stack frame");\
} \
} \
} while (0)
#include "__longjmp.c"