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authorUlrich Drepper <drepper@redhat.com>1998-06-25 19:44:22 +0000
committerUlrich Drepper <drepper@redhat.com>1998-06-25 19:44:22 +0000
commit0ca7e46e1654e3165953c0485b70b75b0c3d53ae (patch)
tree40c1d6448d1386167f306c73b6035f92f4a719e5 /linuxthreads
parent75c3a84f2982b57aed2b975e41d7f7a0c47d5f61 (diff)
downloadglibc-0ca7e46e1654e3165953c0485b70b75b0c3d53ae.tar.gz
Update.
1998-06-25 19:26 Ulrich Drepper <drepper@cygnus.com> * Makeconfig (CPPFLAGS): Use $($(subdir)-CPPFLAGS) if defined first. * locale/Makefile: Define locale-CPPFLAGS instead of redefining CPPFLAGS. * libc.map: Export __sigaction. 1998-06-25 Andreas Jaeger <aj@arthur.rhein-neckar.de> * sysdeps/unix/sysv/linux/bits/sched.h (CLONE_PTRACE): Add it (from Linux 2.1.107). 1998-06-24 Ulrich Drepper <drepper@cygnus.com> * nss/nss_files/files-XXX.c (_nss_files_get,ENTNAME_r): Initialize position when file was opened here. Reported by Howard Chu <hyc@platinum.com>. * sysdeps/generic/glob.c: Also protect FNM_* macros from being undefined in a second inclusion. 1998-06-20 Mark Kettenis <kettenis@phys.uva.nl> * sysdeps/mach/hurd/i386/Makefile: New file. * sysdeps/mach/hurd/i386/init-first.c [!PIC] (init1): Call __libc_init_secure. (_hurd_stack_setup): Renamed from __libc_init_first. (__libc_init_first): New function. * sysdeps/mach/hurd/i386/static-start.S: New file. 1998-05-30 Mark Kettenis <kettenis@phys.uva.nl> * sysdeps/mach/hurd/i386/init-first.c 1998-06-22 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * grp/initgroups.c: Use _CALL_DL_FCT. 1998-06-23 Mark Kettenis <kettenis@phys.uva.nl> * elf/dl-load.c (_dl_map_object_from_fd): Add missing cast.
Diffstat (limited to 'linuxthreads')
-rw-r--r--linuxthreads/ChangeLog3
-rw-r--r--linuxthreads/sysdeps/i386/i686/pt-machine.h72
-rw-r--r--linuxthreads/sysdeps/i386/pt-machine.h4
3 files changed, 74 insertions, 5 deletions
diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog
index 2f1f4f566b..2bbeb928e9 100644
--- a/linuxthreads/ChangeLog
+++ b/linuxthreads/ChangeLog
@@ -20,8 +20,7 @@
* sysdeps/pthread/pthread.h: Likewise.
Patches by Xavier leroy.
- * sysdeps/i386/pt-machine.h: When compiling for i686 don't test for
- xchgcmp instruction, it is available.
+ * sysdeps/i386/i686/pt-machine.h: New file.
1998-06-25 Ulrich Drepper <drepper@cygnus.com>
diff --git a/linuxthreads/sysdeps/i386/i686/pt-machine.h b/linuxthreads/sysdeps/i386/i686/pt-machine.h
new file mode 100644
index 0000000000..bb0f0bc8e1
--- /dev/null
+++ b/linuxthreads/sysdeps/i386/i686/pt-machine.h
@@ -0,0 +1,72 @@
+/* Machine-dependent pthreads configuration and inline functions.
+ i686 version.
+ Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Richard Henderson <rth@tamu.edu>.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+
+/* Spinlock implementation; required. */
+extern inline int
+testandset (int *spinlock)
+{
+ int ret;
+
+ __asm__ __volatile__("xchgl %0, %1"
+ : "=r"(ret), "=m"(*spinlock)
+ : "0"(1), "m"(*spinlock));
+
+ return ret;
+}
+
+
+/* Get some notion of the current stack. Need not be exactly the top
+ of the stack, just something somewhere in the current frame. */
+#define CURRENT_STACK_FRAME stack_pointer
+register char * stack_pointer __asm__ ("%esp");
+
+
+/* Compare-and-swap for semaphores. It's always available on i686. */
+#define HAS_COMPARE_AND_SWAP
+
+extern inline int
+__compare_and_swap (long int *p, long int oldval, long int newval)
+{
+ char ret;
+ long int readval;
+
+ __asm__ __volatile__ ("lock; cmpxchgl %3, %1; sete %0"
+ : "=q" (ret), "=m" (*p), "=a" (readval)
+ : "r" (newval), "m" (*p), "a" (oldval));
+ return ret;
+}
+
+
+extern inline int
+get_eflags (void)
+{
+ int res;
+ __asm__ __volatile__ ("pushfl; popl %0" : "=r" (res) : );
+ return res;
+}
+
+
+extern inline void
+set_eflags (int newflags)
+{
+ __asm__ __volatile__ ("pushl %0; popfl" : : "r" (newflags) : "cc");
+}
diff --git a/linuxthreads/sysdeps/i386/pt-machine.h b/linuxthreads/sysdeps/i386/pt-machine.h
index c2a7d0883f..6723c80bda 100644
--- a/linuxthreads/sysdeps/i386/pt-machine.h
+++ b/linuxthreads/sysdeps/i386/pt-machine.h
@@ -45,9 +45,7 @@ register char * stack_pointer __asm__ ("%esp");
We test dynamically whether it's available or not. */
#define HAS_COMPARE_AND_SWAP
-#ifndef __i686__
-# define TEST_FOR_COMPARE_AND_SWAP
-#endif
+#define TEST_FOR_COMPARE_AND_SWAP
extern inline int
__compare_and_swap (long int *p, long int oldval, long int newval)