[BZ #781, BZ #796]

2005-04-28  Roland McGrath  <roland@redhat.com>
	[BZ #796]
	* sysdeps/unix/sysv/linux/dl-sysdep.h: New file.
	Define NEED_DL_SYSINFO_DSO for all platforms.

	* sysdeps/generic/dl-sysdep.h: Remove multiple inclusion protection.
	* sysdeps/alpha/dl-sysdep.h: Likewise.
	Use #include_next instead of duplicating generic file's contents.
	* sysdeps/ia64/dl-sysdep.h: Likewise.
	* sysdeps/sparc/dl-sysdep.h: Likewise.

2005-03-22  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc64/memset.S (memset): Make ___memset local.

2005-03-07  Steven Munroe  <sjmunroe@us.ibm.com>

	[BZ #781]
	* sysdeps/unix/sysv/linux/kernel-features.h
	(__ASSUME_TGKILL): Define for powerpc32/64 starting with 2.6.1.
	(__ASSUME_UTIMES): Define for powerpc32/64 starting with 2.6.1.
	(__ASSUME_FADVISE64_64_SYSCALL): Define for powerpc32 only starting
	with 2.6.1.
	(__ASSUME_WAITID_SYSCALL): Don't define for powerpc32/64.

6 files changed, 50 insertions, 70 deletions

diff --git a/sysdeps/alpha/dl-sysdep.h b/sysdeps/alpha/dl-sysdep.h
index 0b4c8050de..cd678f4e43 100644
--- a/sysdeps/alpha/dl-sysdep.h
+++ b/sysdeps/alpha/dl-sysdep.h
@@ -1,5 +1,5 @@
 /* System-specific settings for dynamic linker code.  Alpha version.
-   Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2003, 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
@@ -17,25 +17,8 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
-#ifndef _DL_SYSDEP_H
-#define _DL_SYSDEP_H   1
-
-/* This macro must be defined to either 0 or 1.
-
-   If 1, then an errno global variable hidden in ld.so will work right with
-   all the errno-using libc code compiled for ld.so, and there is never a
-   need to share the errno location with libc.  This is appropriate only if
-   all the libc functions that ld.so uses are called without PLT and always
-   get the versions linked into ld.so rather than the libc ones.  */
-
-#ifdef IS_IN_rtld
-# define RTLD_PRIVATE_ERRNO 1
-#else
-# define RTLD_PRIVATE_ERRNO 0
-#endif
+#include_next <dl-sysdep.h>
 
 /* _dl_argv cannot be attribute_relro, because _dl_start_user
    might write into it after _dl_start returns.  */
 #define DL_ARGV_NOT_RELRO 1
-
-#endif /* dl-sysdep.h */
diff --git a/sysdeps/generic/dl-sysdep.h b/sysdeps/generic/dl-sysdep.h
index 565287027c..c99fd3ea36 100644
--- a/sysdeps/generic/dl-sysdep.h
+++ b/sysdeps/generic/dl-sysdep.h
@@ -1,5 +1,5 @@
 /* System-specific settings for dynamic linker code.  Generic version.
-   Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2003, 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
@@ -17,8 +17,8 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
-#ifndef _DL_SYSDEP_H
-#define _DL_SYSDEP_H   1
+/* No multiple inclusion protection need here because it's just macros.
+   We don't want to use _DL_SYSDEP_H in case we are #include_next'd.  */
 
 /* This macro must be defined to either 0 or 1.
 
@@ -33,5 +33,3 @@
 #else
 # define RTLD_PRIVATE_ERRNO 0
 #endif
-
-#endif /* dl-sysdep.h */
diff --git a/sysdeps/ia64/dl-sysdep.h b/sysdeps/ia64/dl-sysdep.h
index 352bb3bed5..e4040efc4c 100644
--- a/sysdeps/ia64/dl-sysdep.h
+++ b/sysdeps/ia64/dl-sysdep.h
@@ -1,5 +1,5 @@
 /* System-specific settings for dynamic linker code.  IA-64 version.
-   Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2003, 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
@@ -17,25 +17,8 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
-#ifndef _DL_SYSDEP_H
-#define _DL_SYSDEP_H   1
-
-/* This macro must be defined to either 0 or 1.
-
-   If 1, then an errno global variable hidden in ld.so will work right with
-   all the errno-using libc code compiled for ld.so, and there is never a
-   need to share the errno location with libc.  This is appropriate only if
-   all the libc functions that ld.so uses are called without PLT and always
-   get the versions linked into ld.so rather than the libc ones.  */
-
-#ifdef IS_IN_rtld
-# define RTLD_PRIVATE_ERRNO 1
-#else
-# define RTLD_PRIVATE_ERRNO 0
-#endif
+#include_next <dl-sysdep.h>
 
 /* _dl_argv cannot be attribute_relro, because _dl_start_user
    might write into it after _dl_start returns.  */
 #define DL_ARGV_NOT_RELRO 1
-
-#endif /* dl-sysdep.h */
diff --git a/sysdeps/sparc/dl-sysdep.h b/sysdeps/sparc/dl-sysdep.h
index eb6a788a89..2dee6b1f50 100644
--- a/sysdeps/sparc/dl-sysdep.h
+++ b/sysdeps/sparc/dl-sysdep.h
@@ -1,5 +1,5 @@
 /* System-specific settings for dynamic linker code.  SPARC version.
-   Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2003, 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
@@ -17,25 +17,8 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
-#ifndef _DL_SYSDEP_H
-#define _DL_SYSDEP_H   1
-
-/* This macro must be defined to either 0 or 1.
-
-   If 1, then an errno global variable hidden in ld.so will work right with
-   all the errno-using libc code compiled for ld.so, and there is never a
-   need to share the errno location with libc.  This is appropriate only if
-   all the libc functions that ld.so uses are called without PLT and always
-   get the versions linked into ld.so rather than the libc ones.  */
-
-#ifdef IS_IN_rtld
-# define RTLD_PRIVATE_ERRNO 1
-#else
-# define RTLD_PRIVATE_ERRNO 0
-#endif
+#include_next <dl-sysdep.h>
 
 /* _dl_argv cannot be attribute_relro, because _dl_start_user
    might write into it after _dl_start returns.  */
 #define DL_ARGV_NOT_RELRO 1
-
-#endif /* dl-sysdep.h */
diff --git a/sysdeps/unix/sysv/linux/dl-sysdep.h b/sysdeps/unix/sysv/linux/dl-sysdep.h
new file mode 100644
index 0000000000..becfc8df3f
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/dl-sysdep.h
@@ -0,0 +1,27 @@
+/* System-specific settings for dynamic linker code.  Linux version.
+   Copyright (C) 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_next <dl-sysdep.h>
+
+/* On many architectures the kernel provides a virtual DSO and gives
+   AT_SYSINFO_EHDR to point us to it.  As this is introduced for new
+   machines, we should look at it for unwind information even if
+   we aren't making direct use of it.  So enable this across the board.  */
+
+#define NEED_DL_SYSINFO_DSO	1
diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h
index 83ebe0cf74..26cddd5a73 100644
--- a/sysdeps/unix/sysv/linux/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/kernel-features.h
@@ -354,22 +354,24 @@
 
 /* The tgkill syscall was instroduced for i386 in 2.5.75.  For Alpha
    it was introduced in 2.6.0-test1 which unfortunately cannot be
-   distinguished from 2.6.0.  On x86-64 it was introduced in
-   2.6.0-test3. */
+   distinguished from 2.6.0.  On x86-64, ppc, and ppc64 it was 
+   introduced in 2.6.0-test3. */
 #if (__LINUX_KERNEL_VERSION >= 132427 && defined __i386__) \
     || (__LINUX_KERNEL_VERSION >= 132609 && defined __alpha__) \
     || (__LINUX_KERNEL_VERSION >= 132609 && defined __x86_64__) \
+    || (__LINUX_KERNEL_VERSION >= 132609 && defined __powerpc__) \
     || (__LINUX_KERNEL_VERSION >= 132609 && defined __sh__)
 # define __ASSUME_TGKILL	1
 #endif
 
 /* The utimes syscall has been available for some architectures
-   forever.  For x86 it was introduced after 2.5.75, for x86-64 in
-   2.6.0-test3.  */
+   forever.  For x86 it was introduced after 2.5.75, for x86-64, 
+   ppc, and ppc64 it was introduced in 2.6.0-test3.  */
 #if defined __alpha__ || defined __ia64__ || defined __hppa__ \
     || defined __sparc__ \
     || (__LINUX_KERNEL_VERSION > 132427 && defined __i386__) \
     || (__LINUX_KERNEL_VERSION > 132609 && defined __x86_64__) \
+    || (__LINUX_KERNEL_VERSION >= 132609 && defined __powerpc__) \
     || (__LINUX_KERNEL_VERSION >= 132609 && defined __sh__)
 # define __ASSUME_UTIMES	1
 #endif
@@ -383,8 +385,11 @@
 #endif
 
 /* The fixed version of the posix_fadvise64 syscall appeared in
-   2.6.0-test3.  At least for x86.  */
-#if __LINUX_KERNEL_VERSION >= 132609 && defined __i386__
+   2.6.0-test3.  At least for x86.  Powerpc support appeared in
+   2.6.2, but for 32-bit userspace only.  */
+#if (__LINUX_KERNEL_VERSION >= 132609 && defined __i386__) \
+    || (__LINUX_KERNEL_VERSION >= 132610 && defined __powerpc__ \
+       && !defined __powerpc64__)
 # define __ASSUME_FADVISE64_64_SYSCALL	1
 #endif
 
@@ -419,8 +424,9 @@
 # define __ASSUME_BRK_PAGE_ROUNDED	1
 #endif
 
-/* Starting with version 2.6.9, the waitid system call is available.  */
-#if __LINUX_KERNEL_VERSION >=  0x020609
+/* Starting with version 2.6.9, the waitid system call is available.
+   Except for powerpc and powerpc64.  */
+#if __LINUX_KERNEL_VERSION >=  0x020609 && !defined __powerpc__
 # define __ASSUME_WAITID_SYSCALL	1
 #endif