Update.

2002-07-19  Ulrich Drepper  <drepper@redhat.com>

	* configure.in: Add test for __thread support in compiler.
	* config.h.in: Add HAVE___THREAD.
	* Makefile (headers): Remove errno.h, sys/errno.h, and bits/errno.h.
	* include/sys/errno.h: Moved to...
	* stdlib/sys/errno.h: ...here.  New file.
	* stdlib/errno.h: New file.  Moved from...
	* include/errno.h: ...here.  Changed into an internal header defining
	libc-local things like __set_errno.
	* stdlib/Makefile (headers): Add errno.h, sys/errno.h, and
	bits/errno.h.
	* elf/dl-minimal.c: Include <tls.h>.  Define errno as thread-local
	variable if USE_TLS && HAVE___THREAD.  Don't define __errno_location
	either.
	* elf/rtld.c (_dl_start): Add code to initialize TLS for ld.so
	from...
	(_dl_start_final): ...here.  Add code to initialize tls elements from
	bootstrap_map.
	* sysdeps/generic/errno-loc.c: Define errno as thread-local variable
	if USE_TLS && HAVE___THREAD.
	* sysdeps/generic/bits/errno.h: Remove __set_errno definition.
	* sysdeps/mach/hurd/bits/errno.h: Likewise.
	* sysdeps/standalone/arm/bits/errno.h: Likewise.
	* sysdeps/standalone/bits/errno.h: Likewise.
	* sysdeps/unix/bsd/bsd4.4/bits/errno.h: Likewise.
	* sysdeps/unix/sysv/aix/bits/errno.h: Likewise.
	* sysdeps/unix/sysv/hpux/bits/errno.h: Likewise.
	* sysdeps/unix/sysv/linux/bits/errno.h: Likewise.
	* sysdeps/unix/sysv/linux/hppa/bits/errno.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/errno.h: Likewise.
	* sysdeps/unix/sysv/sysv4/solaris2/bits/errno.h: Likewise.
	* sysdeps/i386/dl-machine.c (elf_machine_rel) [RTLD_BOOTSTRAP]: Don't
	use GL(dl_rtld_map), use map parameter.
	* sysdeps/sh/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/unix/sysv/linux/i386/sysdep.S: Define errno in .tbss if
	USE_TLS && HAVE___THREAD.
	* sysdeps/unix/sysv/linux/i386/sysdep.h: Unify SETUP_PIC_REG
	definitions.  If USE_TLS && HAVE___THREAD store errooor value using
	TLS code sequence.
	* sysdeps/unix/sysv/linux/i386/i686/sysdep.h: Likewise.

	* sysdeps/unix/sysv/linux/getcwd.c: No real need to restore errno.
	* sysdeps/unix/sysv/linux/grantpt.c: Likewise.
	* sysdeps/unix/sysv/linux/internal_statvfs.c: Likewise.
	* sysdeps/unix/sysv/linux/msgctl.c: Likewise.
	* sysdeps/unix/sysv/linux/readv.c: Likewise.
	* sysdeps/unix/sysv/linux/writev.c: Likewise.

6 files changed, 41 insertions, 18 deletions

diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog
index e70be81c13..7d4cc40832 100644
--- a/linuxthreads/ChangeLog
+++ b/linuxthreads/ChangeLog
@@ -1,3 +1,12 @@
+2002-07-19  Ulrich Drepper  <drepper@redhat.com>
+
+	* errno.c (__errno_location): Don't define unless !USE_TLS
+	|| !HAVE___THREAD.
+	* sysdeps/i386/pt-machine.c: Protect C code with #ifndef ASSEMBLER.
+	* sysdeps/i386/tls.h: Likewise.
+	* sysdeps/i386/useldt.h: Likewise.
+	* sysdeps/i386/i686/pt-machine.h: Likewise.
+
 2002-07-02  H.J. Lu  <hjl@gnu.org>
 
 	* sysdeps/mips/pspinlock.c: Don't include <sgidefs.h>.  Always
diff --git a/linuxthreads/errno.c b/linuxthreads/errno.c
index 0eb98ac20c..c74e4c45c9 100644
--- a/linuxthreads/errno.c
+++ b/linuxthreads/errno.c
@@ -17,14 +17,18 @@
 #include <errno.h>
 #include <netdb.h>
 #include <resolv.h>
+#include <tls.h>
 #include "pthread.h"
 #include "internals.h"
 
+#if !USE_TLS || !HAVE___THREAD
+/* The definition in libc is sufficient if we use TLS.  */
 int * __errno_location()
 {
   pthread_descr self = thread_self();
   return THREAD_GETMEM (self, p_errnop);
 }
+#endif
 
 int * __h_errno_location()
 {
diff --git a/linuxthreads/sysdeps/i386/i686/pt-machine.h b/linuxthreads/sysdeps/i386/i686/pt-machine.h
index 6b5b7afeee..4f3541cfb6 100644
--- a/linuxthreads/sysdeps/i386/i686/pt-machine.h
+++ b/linuxthreads/sysdeps/i386/i686/pt-machine.h
@@ -27,6 +27,7 @@
 #endif
 #include "kernel-features.h"
 
+#ifndef ASSEMBLER
 extern long int testandset (int *spinlock);
 extern int __compare_and_swap (long int *p, long int oldval, long int newval);
 
@@ -66,6 +67,7 @@ __compare_and_swap (long int *p, long int oldval, long int newval)
 			: "memory");
   return ret;
 }
+#endif
 
 #if __ASSUME_LDT_WORKS > 0
 #include "../useldt.h"
diff --git a/linuxthreads/sysdeps/i386/pt-machine.h b/linuxthreads/sysdeps/i386/pt-machine.h
index 5a758584da..ec92ce2418 100644
--- a/linuxthreads/sysdeps/i386/pt-machine.h
+++ b/linuxthreads/sysdeps/i386/pt-machine.h
@@ -22,6 +22,7 @@
 #ifndef _PT_MACHINE_H
 #define _PT_MACHINE_H	1
 
+#ifndef ASSEMBLER
 #ifndef PT_EI
 # define PT_EI extern inline
 #endif
@@ -102,5 +103,6 @@ compare_and_swap_is_available (void)
      Otherwise, it's a 486 or above and it has cmpxchg.  */
   return changed != 0;
 }
+#endif /* ASSEMBLER */
 
 #endif /* pt-machine.h */
diff --git a/linuxthreads/sysdeps/i386/tls.h b/linuxthreads/sysdeps/i386/tls.h
index c1bfd1bca8..44f947c9c6 100644
--- a/linuxthreads/sysdeps/i386/tls.h
+++ b/linuxthreads/sysdeps/i386/tls.h
@@ -20,9 +20,10 @@
 #ifndef _TLS_H
 #define _TLS_H
 
-#include <stddef.h>
+# include <pt-machine.h>
 
-#include <pt-machine.h>
+#ifndef ASSEMBLER
+# include <stddef.h>
 
 /* Type for the dtv.  */
 typedef union dtv
@@ -39,56 +40,58 @@ typedef struct
   dtv_t *dtv;
   void *self;		/* Pointer to the thread descriptor.  */
 } tcbhead_t;
+#endif
 
 
 /* We can support TLS only if the floating-stack support is available.  */
 #if defined FLOATING_STACKS && defined HAVE_TLS_SUPPORT
 
-/* Get system call information.  */
-# include <sysdep.h>
-
 /* Signal that TLS support is available.  */
 # define USE_TLS	1
 
+# ifndef ASSEMBLER
+/* Get system call information.  */
+#  include <sysdep.h>
+
 
 /* Get the thread descriptor definition.  */
-# include <linuxthreads/descr.h>
+#  include <linuxthreads/descr.h>
 
 /* This is the size of the initial TCB.  */
-# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t)
+#  define TLS_INIT_TCB_SIZE sizeof (tcbhead_t)
 
 /* Alignment requirements for the initial TCB.  */
-# define TLS_INIT_TCB_ALIGN __alignof__ (tcbhead_t)
+#  define TLS_INIT_TCB_ALIGN __alignof__ (tcbhead_t)
 
 /* This is the size of the TCB.  */
-# define TLS_TCB_SIZE sizeof (struct _pthread_descr_struct)
+#  define TLS_TCB_SIZE sizeof (struct _pthread_descr_struct)
 
 /* Alignment requirements for the TCB.  */
-# define TLS_TCB_ALIGN __alignof__ (struct _pthread_descr_struct)
+#  define TLS_TCB_ALIGN __alignof__ (struct _pthread_descr_struct)
 
 /* The TCB can have any size and the memory following the address the
    thread pointer points to is unspecified.  Allocate the TCB there.  */
-# define TLS_TCB_AT_TP	1
+#  define TLS_TCB_AT_TP	1
 
 
 /* Install the dtv pointer.  The pointer passed is to the element with
    index -1 which contain the length.  */
-# define INSTALL_DTV(descr, dtvp) \
+#  define INSTALL_DTV(descr, dtvp) \
   ((tcbhead_t *) descr)->dtv = dtvp + 1
 
 /* Install new dtv for current thread.  */
-# define INSTALL_NEW_DTV(dtv) \
+#  define INSTALL_NEW_DTV(dtv) \
   ({ struct _pthread_descr_struct *__descr;				      \
      THREAD_SETMEM (__descr, p_header.data.dtvp, dtv); })
 
 /* Return dtv of given thread descriptor.  */
-# define GET_DTV(descr) \
+#  define GET_DTV(descr) \
   (((tcbhead_t *) descr)->dtv)
 
 /* Code to initially initialize the thread pointer.  This might need
    special attention since 'errno' is not yet available and if the
    operation can cause a failure 'errno' must not be touched.  */
-# define TLS_INIT_TP(descr) \
+#  define TLS_INIT_TP(descr) \
   do {									      \
     void *_descr = (descr);						      \
     struct modify_ldt_ldt_s ldt_entry =					      \
@@ -116,10 +119,11 @@ typedef struct
 
 
 /* Return the address of the dtv for the current thread.  */
-# define THREAD_DTV() \
+#  define THREAD_DTV() \
   ({ struct _pthread_descr_struct *__descr;				      \
      THREAD_GETMEM (__descr, p_header.data.dtvp); })
 
-#endif	/* FLOATING_STACKS && HAVE_TLS_SUPPORT */
+# endif	/* FLOATING_STACKS && HAVE_TLS_SUPPORT */
+#endif /* __ASSEMBLER__ */
 
 #endif	/* tls.h */
diff --git a/linuxthreads/sysdeps/i386/useldt.h b/linuxthreads/sysdeps/i386/useldt.h
index 116e95d042..64a3b52123 100644
--- a/linuxthreads/sysdeps/i386/useldt.h
+++ b/linuxthreads/sysdeps/i386/useldt.h
@@ -1,6 +1,6 @@
 /* Special definitions for ix86 machine using segment register based
    thread descriptor.
-   Copyright (C) 1998, 2000, 2001 Free Software Foundation, Inc.
+   Copyright (C) 1998, 2000, 2001, 2002 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>.
 
@@ -19,6 +19,7 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
+#ifndef ASSEMBLER
 #include <stddef.h>	/* For offsetof.  */
 #include <stdlib.h>	/* For abort().  */
 
@@ -198,6 +199,7 @@ extern int __modify_ldt (int, struct modify_ldt_ldt_s *, size_t);
 					     member)));			      \
     }									      \
 })
+#endif
 
 /* We want the OS to assign stack addresses.  */
 #define FLOATING_STACKS	1