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Hi!
This patch makes s390{,x} glibc compile again by defining ____longjmp_chk.
Tested on s390{,x}-linux.
2009-05-29 Jakub Jelinek <jakub@redhat.com>
* sysdeps/s390/s390-32/__longjmp.c (__longjmp): If CHECK_SP is
defined, use it.
* sysdeps/s390/s390-64/__longjmp.c (__longjmp): Likewise.
* sysdeps/s390/s390-32/____longjmp_chk.c: New file.
* sysdeps/s390/s390-64/____longjmp_chk.c: New file.
--- libc/sysdeps/s390/s390-32/__longjmp.c.jj 2009-05-16 13:23:42.000000000 -0400
+++ libc/sysdeps/s390/s390-32/__longjmp.c 2009-05-29 10:37:56.000000000 -0400
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2001, 2005 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2001, 2005, 2009 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
@@ -33,6 +33,11 @@ __longjmp (__jmp_buf env, int val)
#ifdef PTR_DEMANGLE
register uintptr_t r3 __asm ("%r3") = THREAD_GET_POINTER_GUARD ();
register void *r1 __asm ("%r1") = (void *) env;
+# ifdef CHECK_SP
+ CHECK_SP (env, r3);
+# endif
+#elif defined CHECK_SP
+ CHECK_SP (env, 0);
#endif
/* Restore registers and jump back. */
asm volatile ("ld %%f6,48(%1)\n\t"
--- libc/sysdeps/s390/s390-32/____longjmp_chk.c.jj 2009-05-29 10:16:59.000000000 -0400
+++ libc/sysdeps/s390/s390-32/____longjmp_chk.c 2009-05-29 10:39:08.000000000 -0400
@@ -0,0 +1,41 @@
+/* Copyright (C) 2009 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.com>.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <errno.h>
+#include <sysdep.h>
+#include <setjmp.h>
+#include <bits/setjmp.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+
+#define __longjmp ____longjmp_chk
+
+#define CHECK_SP(env, guard) \
+ do \
+ { \
+ uintptr_t cur_sp; \
+ uintptr_t new_sp = env->__gregs[9]; \
+ __asm ("lr %0, %%r15" : "=r" (cur_sp)); \
+ new_sp ^= guard; \
+ if (new_sp < cur_sp) \
+ __fortify_fail ("longjmp causes uninitialized stack frame"); \
+ } while (0)
+
+#include "__longjmp.c"
--- libc/sysdeps/s390/s390-64/__longjmp.c.jj 2009-05-16 13:23:42.000000000 -0400
+++ libc/sysdeps/s390/s390-64/__longjmp.c 2009-05-29 10:38:08.000000000 -0400
@@ -1,4 +1,4 @@
-/* Copyright (C) 2001, 2005 Free Software Foundation, Inc.
+/* Copyright (C) 2001, 2005, 2009 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
@@ -33,6 +33,11 @@ __longjmp (__jmp_buf env, int val)
#ifdef PTR_DEMANGLE
register uintptr_t r3 __asm ("%r3") = THREAD_GET_POINTER_GUARD ();
register void *r1 __asm ("%r1") = (void *) env;
+# ifdef CHECK_SP
+ CHECK_SP (env, r3);
+# endif
+#elif defined CHECK_SP
+ CHECK_SP (env, 0);
#endif
/* Restore registers and jump back. */
asm volatile ("ld %%f7,104(%1)\n\t"
--- libc/sysdeps/s390/s390-64/____longjmp_chk.c.jj 2009-05-29 10:16:59.000000000 -0400
+++ libc/sysdeps/s390/s390-64/____longjmp_chk.c 2009-05-29 10:38:52.000000000 -0400
@@ -0,0 +1,41 @@
+/* Copyright (C) 2009 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.com>.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <errno.h>
+#include <sysdep.h>
+#include <setjmp.h>
+#include <bits/setjmp.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+
+#define __longjmp ____longjmp_chk
+
+#define CHECK_SP(env, guard) \
+ do \
+ { \
+ uintptr_t cur_sp; \
+ uintptr_t new_sp = env->__gregs[9]; \
+ __asm ("lgr %0, %%r15" : "=r" (cur_sp)); \
+ new_sp ^= guard; \
+ if (new_sp < cur_sp) \
+ __fortify_fail ("longjmp causes uninitialized stack frame"); \
+ } while (0)
+
+#include "__longjmp.c"
Jakub
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