From 0ca7e46e1654e3165953c0485b70b75b0c3d53ae Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Thu, 25 Jun 1998 19:44:22 +0000 Subject: Update. 1998-06-25 19:26 Ulrich Drepper * 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 * sysdeps/unix/sysv/linux/bits/sched.h (CLONE_PTRACE): Add it (from Linux 2.1.107). 1998-06-24 Ulrich Drepper * nss/nss_files/files-XXX.c (_nss_files_get,ENTNAME_r): Initialize position when file was opened here. Reported by Howard Chu . * sysdeps/generic/glob.c: Also protect FNM_* macros from being undefined in a second inclusion. 1998-06-20 Mark Kettenis * 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 * sysdeps/mach/hurd/i386/init-first.c 1998-06-22 Andreas Schwab * grp/initgroups.c: Use _CALL_DL_FCT. 1998-06-23 Mark Kettenis * elf/dl-load.c (_dl_map_object_from_fd): Add missing cast. --- linuxthreads/sysdeps/i386/i686/pt-machine.h | 72 +++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 linuxthreads/sysdeps/i386/i686/pt-machine.h (limited to 'linuxthreads/sysdeps/i386/i686/pt-machine.h') 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 . + + 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"); +} -- cgit 1.4.1