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Copied from http://forums.gentoo.org/viewtopic-p-4476881.html
================================================================ @ -0,0 +1,117 @@ diff -urN glibc-2.7.orig/sysdeps/i386/i586/memcpy_chk.S libc-2.7/sysdeps/i386/i586/memcpy_chk.S --- glibc-2.7.orig/sysdeps/i386/i586/memcpy_chk.S 1970-01-01 1:00:00.000000000 +0100 +++ glibc-2.7/sysdeps/i386/i586/memcpy_chk.S 2005-05-14 19:52:13.000000000 0200 @@ -0,0 +1,35 @@ +/* Checking memcpy for i686. + Copyright (C) 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 + 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 <sysdep.h> +#include "asm-syntax.h" + +#ifndef PIC + /* For libc.so this is defined in memcpy.S. + For libc.a, this is a separate source to avoid + memcpy bringing in __chk_fail and all routines + it calls. */ + .text +ENTRY (__memcpy_chk) + movl 12(%esp), %eax + cmpl %eax, 16(%esp) + jb __chk_fail + jmp memcpy +END (__memcpy_chk) +#endif diff -urN glibc-2.7.orig/sysdeps/i386/i586/mempcpy_chk.S libc-2.7/sysdeps/i386/i586/mempcpy_chk.S --- glibc-2.7.orig/sysdeps/i386/i586/mempcpy_chk.S 1970-01-01 1:00:00.000000000 +0100 +++ glibc-2.7/sysdeps/i386/i586/mempcpy_chk.S 2004-10-18 06:17:11.000000000 0200 @@ -0,0 +1,35 @@ +/* Checking mempcpy for x86-64. + Copyright (C) 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 + 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 <sysdep.h> +#include "asm-syntax.h" + +#ifndef PIC + /* For libc.so this is defined in mempcpy.S. + For libc.a, this is a separate source to avoid + mempcpy bringing in __chk_fail and all routines + it calls. */ + .text +ENTRY (__mempcpy_chk) + movl 12(%esp), %eax + cmpl %eax, 16(%esp) + jb __chk_fail + jmp mempcpy +END (__mempcpy_chk) +#endif diff -urN glibc-2.7.orig/sysdeps/i386/i586/memset_chk.S libc-2.7/sysdeps/i386/i586/memset_chk.S --- glibc-2.7.orig/sysdeps/i386/i586/memset_chk.S 1970-01-01 1:00:00.000000000 +0100 +++ glibc-2.7/sysdeps/i386/i586/memset_chk.S 2005-03-01 01:13:36.000000000 0100 @@ -0,0 +1,35 @@ +/* Checking memset for i686. + Copyright (C) 2004, 2005 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 + 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 <sysdep.h> +#include "asm-syntax.h" + +#ifndef PIC + /* For libc.so this is defined in memset.S. + For libc.a, this is a separate source to avoid + memset bringing in __chk_fail and all routines + it calls. */ + .text +ENTRY (__memset_chk) + movl 12(%esp), %eax + cmpl %eax, 16(%esp) + jb __chk_fail + jmp memset +END (__memset_chk) +#endif
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