diff options
| -rw-r--r-- | ChangeLog | 8 | ||||
| -rw-r--r-- | sysdeps/s390/s390-32/____longjmp_chk.c | 41 | ||||
| -rw-r--r-- | sysdeps/s390/s390-32/__longjmp.c | 7 | ||||
| -rw-r--r-- | sysdeps/s390/s390-64/____longjmp_chk.c | 41 | ||||
| -rw-r--r-- | sysdeps/s390/s390-64/__longjmp.c | 7 |
5 files changed, 102 insertions, 2 deletions
@@ -1,3 +1,11 @@ +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. + 2009-05-29 Ulrich Drepper <drepper@redhat.com> * sysdeps/x86_64/cacheinfo.c: Compact intel_02_known array. Adjust diff --git a/sysdeps/s390/s390-32/____longjmp_chk.c b/sysdeps/s390/s390-32/____longjmp_chk.c new file mode 100644 index 0000000000..c5eb721e0e --- /dev/null +++ b/sysdeps/s390/s390-32/____longjmp_chk.c @@ -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" diff --git a/sysdeps/s390/s390-32/__longjmp.c b/sysdeps/s390/s390-32/__longjmp.c index c47ebbc52a..4abc0ec81c 100644 --- a/sysdeps/s390/s390-32/__longjmp.c +++ b/sysdeps/s390/s390-32/__longjmp.c @@ -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" diff --git a/sysdeps/s390/s390-64/____longjmp_chk.c b/sysdeps/s390/s390-64/____longjmp_chk.c new file mode 100644 index 0000000000..241822ce4a --- /dev/null +++ b/sysdeps/s390/s390-64/____longjmp_chk.c @@ -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" diff --git a/sysdeps/s390/s390-64/__longjmp.c b/sysdeps/s390/s390-64/__longjmp.c index 030fb5b515..445bd3baf3 100644 --- a/sysdeps/s390/s390-64/__longjmp.c +++ b/sysdeps/s390/s390-64/__longjmp.c @@ -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" |