This is the mail archive of the libc-hacker@sources.redhat.com mailing list for the glibc project.

Note that libc-hacker is a closed list. You may look at the archives of this list, but subscription and posting are not open.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

[PATCH] Fix compatibility sys_siglist and sys_sigabbrev


Hi!

Since gcc started using .data.rel.ro.local and similar sections,
sys_siglist@GLIBC_2.0 and sys_sigabbrev@GLIBC_2.0 are very broken - they
point to some random object in .data section which happens to follow
(in my build that is proc_file_chain_lock).
The following patch should fix it (and as a bonus arm special siglist
version can go away, since ASM_TYPE_DIRECTIVE_PREFIX configury takes care
of it.

2002-10-29  Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/gnu/siglist.c (PTR_SIZE_STR): Remove.
	(__old_sys_siglist, __old_sys_sigabbrev): Use strong_alias and
	declare_symbol.
	* sysdeps/mach/hurd/siglist.h (OLD_SIGLIST_SIZE_STR): Remove.
	(OLD_SIGLIST_SIZE): Define.
	* sysdeps/unix/sysv/linux/siglist.h (OLD_SIGLIST_SIZE_STR): Remove.
	(OLD_SIGLIST_SIZE): Define.
	* sysdeps/unix/sysv/linux/arm/siglist.c: Remove.

--- libc/sysdeps/gnu/siglist.c.jj	2002-08-05 08:44:20.000000000 +0200
+++ libc/sysdeps/gnu/siglist.c	2002-10-29 15:30:52.000000000 +0100
@@ -21,20 +21,7 @@
 #include <signal.h>
 #include <libintl.h>
 #include <shlib-compat.h>
-
 #include <bits/wordsize.h>
-#if	__WORDSIZE == 32
-#define PTR_SIZE_STR "4"
-#elif	__WORDSIZE == 64
-#define PTR_SIZE_STR "8"
-#else
-#error	unexpected wordsize __WORDSIZE
-#endif
-
-
-#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
-asm (".data\n\t.globl __old_sys_siglist\n__old_sys_siglist:");
-#endif
 
 const char *const __new_sys_siglist[NSIG] =
 {
@@ -45,10 +32,8 @@ const char *const __new_sys_siglist[NSIG
 strong_alias (__new_sys_siglist, _sys_siglist_internal)
 
 #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
-asm (".type __old_sys_siglist,@object\n\t.size __old_sys_siglist,"
-        OLD_SIGLIST_SIZE_STR "*" PTR_SIZE_STR);
-
-asm (".data\n\t.globl __old_sys_sigabbrev\n__old_sys_sigabbrev:");
+strong_alias (_sys_siglist_internal, __old_sys_siglist)
+declare_symbol (__old_sys_siglist, object, OLD_SIGLIST_SIZE * __WORDSIZE / 8)
 #endif
 
 const char *const __new_sys_sigabbrev[NSIG] =
@@ -57,13 +42,11 @@ const char *const __new_sys_sigabbrev[NS
 #include <siglist.h>
 #undef init_sig
 };
+strong_alias (__new_sys_sigabbrev, _sys_sigabbrev_internal)
 
 #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
-asm (".type __old_sys_sigabbrev,@object\n\t.size __old_sys_sigabbrev,"
-        OLD_SIGLIST_SIZE_STR "*" PTR_SIZE_STR);
-
-extern const char *const *__old_sys_siglist;
-extern const char *const *__old_sys_sigabbrev;
+strong_alias (_sys_sigabbrev_internal, __old_sys_sigabbrev)
+declare_symbol (__old_sys_sigabbrev, object, OLD_SIGLIST_SIZE * __WORDSIZE / 8)
 
 strong_alias (__old_sys_siglist, _old_sys_siglist)
 compat_symbol (libc, __old_sys_siglist, _sys_siglist, GLIBC_2_0);
--- libc/sysdeps/mach/hurd/siglist.h.jj	2001-08-23 18:50:05.000000000 +0200
+++ libc/sysdeps/mach/hurd/siglist.h	2002-10-29 15:26:35.000000000 +0100
@@ -1,4 +1,4 @@
-/* Copyright (C) 1999 Free Software Foundation, Inc.
+/* Copyright (C) 1999, 2002 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
@@ -20,4 +20,4 @@
 
 #include_next <siglist.h>	/* Get the canonical list.  */
 
-#define	OLD_SIGLIST_SIZE_STR	"33" /* For GLIBC_2.0 binary compatibility.  */
+#define	OLD_SIGLIST_SIZE	33 /* For GLIBC_2.0 binary compatibility.  */
--- libc/sysdeps/unix/sysv/linux/arm/siglist.c.jj	2002-08-05 08:44:24.000000000 +0200
+++ libc/sysdeps/unix/sysv/linux/arm/siglist.c	2002-10-29 15:39:23.000000000 +0100
@@ -1,67 +0,0 @@
-/* Copyright (C) 1997, 1998, 2000, 2002 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 <stddef.h>
-#include <signal.h>
-#include <sizes.h>
-#include <libintl.h>
-#include <shlib-compat.h>
-
-#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
-asm (".data; .globl __old_sys_siglist;  __old_sys_siglist:");
-#endif
-
-const char *const __new_sys_siglist[NSIG] =
-{
-#define init_sig(sig, abbrev, desc)   [sig] desc,
-#include "siglist.h"
-#undef init_sig
-};
-strong_alias (__new_sys_siglist, _sys_siglist_internal)
-
-#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
-asm (".type __old_sys_siglist,%object;.size __old_sys_siglist,"
-        OLD_SIGLIST_SIZE_STR "*" PTR_SIZE_STR);
-
-asm (".data; .globl __old_sys_sigabbrev;  __old_sys_sigabbrev:");
-#endif
-
-const char *const __new_sys_sigabbrev[NSIG] =
-{
-#define init_sig(sig, abbrev, desc)   [sig] abbrev,
-#include "siglist.h"
-#undef init_sig
-};
-
-#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
-asm (".type __old_sys_sigabbrev,%object;.size __old_sys_sigabbrev,"
-        OLD_SIGLIST_SIZE_STR "*" PTR_SIZE_STR);
-
-extern const char *const *__old_sys_siglist;
-extern const char *const *__old_sys_sigabbrev;
-
-strong_alias (__old_sys_siglist, _old_sys_siglist)
-compat_symbol (libc, __old_sys_siglist, _sys_siglist, GLIBC_2_0);
-compat_symbol (libc, _old_sys_siglist, sys_siglist, GLIBC_2_0);
-compat_symbol (libc, __old_sys_sigabbrev, sys_sigabbrev, GLIBC_2_0);
-#endif
-
-strong_alias (__new_sys_siglist, _new_sys_siglist)
-versioned_symbol (libc, __new_sys_siglist, _sys_siglist, GLIBC_2_1);
-versioned_symbol (libc, _new_sys_siglist, sys_siglist, GLIBC_2_1);
-versioned_symbol (libc, __new_sys_sigabbrev, sys_sigabbrev, GLIBC_2_1);
--- libc/sysdeps/unix/sysv/linux/siglist.h.jj	2001-08-23 18:50:44.000000000 +0200
+++ libc/sysdeps/unix/sysv/linux/siglist.h	2002-10-29 15:27:02.000000000 +0100
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
+/* Copyright (C) 1996, 1997, 1998, 1999, 2002 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
@@ -20,4 +20,4 @@
 
 #include_next <siglist.h>	/* Get the canonical list.  */
 
-#define	OLD_SIGLIST_SIZE_STR	"32" /* For GLIBC_2.0 binary compatibility.  */
+#define	OLD_SIGLIST_SIZE	32 /* For GLIBC_2.0 binary compatibility.  */

	Jakub


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]