Rejigger i386 dl-sysdep.h files.

3 files changed, 44 insertions, 50 deletions

diff --git a/nptl/ChangeLog b/nptl/ChangeLog
index 2374bbfd17..eb135896fa 100644
--- a/nptl/ChangeLog
+++ b/nptl/ChangeLog
@@ -1,3 +1,16 @@
+2013-03-04  Roland McGrath  <roland@hack.frob.com>
+
+	* sysdeps/unix/sysv/linux/i386/i686/dl-sysdep.h:
+	Change multiple inclusion guard to _LINUX_I686_DL_SYSDEP_H.
+	Use #include_next.
+	(HAVE_DL_DISCOVER_OSVERSION): Remove definition, now redundant.
+	(RTLD_PRIVATE_ERRNO): Likewise.
+	(NEED_DL_SYSINFO, DL_SYSINFO_DEFAULT, DL_SYSINFO_IMPLEMENTATION):
+	Move macros and associated declaration to ...
+	* sysdeps/unix/sysv/linux/i386/dl-sysdep.h: ... here.
+	Change multiple include guard to _LINUX_I386_DL_SYSDEP_H.
+	Use #include_next.
+
 2013-03-01  Carlos O'Donell  <carlos@redhat.com>
 
 	* Makefile (tests): Revert last change.
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/dl-sysdep.h b/nptl/sysdeps/unix/sysv/linux/i386/dl-sysdep.h
index 29a77a08fa..a89eb0a62f 100644
--- a/nptl/sysdeps/unix/sysv/linux/i386/dl-sysdep.h
+++ b/nptl/sysdeps/unix/sysv/linux/i386/dl-sysdep.h
@@ -16,12 +16,31 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef _DL_SYSDEP_H
-# include "i686/dl-sysdep.h"
+#ifndef _LINUX_I386_DL_SYSDEP_H
 
-/* sysenter/syscall is not useful on i386 through i586, but the dynamic
-   linker and dl code in libc.a has to be able to load i686 compiled
-   libraries.  */
-# undef USE_DL_SYSINFO
+#include_next <dl-sysdep.h>
+
+/* Traditionally system calls have been made using int $0x80.  A
+   second method was introduced which, if possible, will use the
+   sysenter/syscall instructions.  To signal the presence and where to
+   find the code the kernel passes an AT_SYSINFO value in the
+   auxiliary vector to the application.  */
+#define NEED_DL_SYSINFO	1
+
+#ifndef __ASSEMBLER__
+extern void _dl_sysinfo_int80 (void) attribute_hidden;
+# define DL_SYSINFO_DEFAULT (uintptr_t) _dl_sysinfo_int80
+# define DL_SYSINFO_IMPLEMENTATION \
+  asm (".text\n\t"							      \
+       ".type _dl_sysinfo_int80,@function\n\t"				      \
+       ".hidden _dl_sysinfo_int80\n"					      \
+       CFI_STARTPROC "\n"						      \
+       "_dl_sysinfo_int80:\n\t"						      \
+       "int $0x80;\n\t"							      \
+       "ret;\n\t"							      \
+       CFI_ENDPROC "\n"							      \
+       ".size _dl_sysinfo_int80,.-_dl_sysinfo_int80\n\t"		      \
+       ".previous");
+#endif
 
 #endif	/* dl-sysdep.h */
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i686/dl-sysdep.h b/nptl/sysdeps/unix/sysv/linux/i386/i686/dl-sysdep.h
index 466f0177c3..c59c8dbbdb 100644
--- a/nptl/sysdeps/unix/sysv/linux/i386/i686/dl-sysdep.h
+++ b/nptl/sysdeps/unix/sysv/linux/i386/i686/dl-sysdep.h
@@ -16,52 +16,14 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef _DL_SYSDEP_H
-#define _DL_SYSDEP_H	1
+#ifndef _LINUX_I686_DL_SYSDEP_H
+#define _LINUX_I686_DL_SYSDEP_H	1
 
-/* This macro must be defined to either 0 or 1.
+/* The i386 file does most of the work.  */
+#include_next <dl-sysdep.h>
 
-   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
-
-/* Traditionally system calls have been made using int $0x80.  A
-   second method was introduced which, if possible, will use the
-   sysenter/syscall instructions.  To signal the presence and where to
-   find the code the kernel passes an AT_SYSINFO value in the
-   auxiliary vector to the application.  */
-#define NEED_DL_SYSINFO	1
+/* Actually use the vDSO entry point for syscalls.
+   i386/dl-sysdep.h arranges to support it, but not use it.  */
 #define USE_DL_SYSINFO	1
 
-#if defined NEED_DL_SYSINFO && !defined __ASSEMBLER__
-extern void _dl_sysinfo_int80 (void) attribute_hidden;
-# define DL_SYSINFO_DEFAULT (uintptr_t) _dl_sysinfo_int80
-# define DL_SYSINFO_IMPLEMENTATION \
-  asm (".text\n\t"							      \
-       ".type _dl_sysinfo_int80,@function\n\t"				      \
-       ".hidden _dl_sysinfo_int80\n"					      \
-       CFI_STARTPROC "\n"						      \
-       "_dl_sysinfo_int80:\n\t"						      \
-       "int $0x80;\n\t"							      \
-       "ret;\n\t"							      \
-       CFI_ENDPROC "\n"							      \
-       ".size _dl_sysinfo_int80,.-_dl_sysinfo_int80\n\t"		      \
-       ".previous");
-#endif
-
-
-#ifndef __ASSEMBLER__
-/* Get version of the OS.  */
-extern int _dl_discover_osversion (void) attribute_hidden;
-# define HAVE_DL_DISCOVER_OSVERSION	1
-#endif
-
 #endif	/* dl-sysdep.h */