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glibc  2.9
fork.h
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00001 /* Copyright (C) 2002 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003    Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <sysdep.h>
00021 
00022 #define ARCH_FORK() \
00023 ({                                                             \
00024   register long __o0 __asm__ ("o0");                                  \
00025   register long __o1 __asm__ ("o1");                                  \
00026   register long __g1 __asm__ ("g1") = __NR_fork;               \
00027   __asm __volatile (__SYSCALL_STRING                                  \
00028                   : "=r" (__g1), "=r" (__o0), "=r" (__o1)             \
00029                   : "0" (__g1)                                 \
00030                   : __SYSCALL_CLOBBERS);                       \
00031   __o0 == -1 ? __o0 : (__o0 & (__o1 - 1));                            \
00032 })
00033 
00034 #include_next <fork.h>