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Diffstat (limited to 'sysdeps/unix/arm/fork.S')
-rw-r--r-- | sysdeps/unix/arm/fork.S | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/sysdeps/unix/arm/fork.S b/sysdeps/unix/arm/fork.S new file mode 100644 index 0000000000..bd00c92cfe --- /dev/null +++ b/sysdeps/unix/arm/fork.S @@ -0,0 +1,34 @@ +/* Copyright (C) 1991,92,94,95,97,2002 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <sysdep.h> + +/* ARM version. */ + +SYSCALL__ (fork, 0) + /* R1 is now 0 for the parent and 1 for the child. Decrement it to + make it -1 (all bits set) for the parent, and 0 (no bits set) + for the child. Then AND it with R0, so the parent gets + R0&-1==R0, and the child gets R0&0==0. */ + sub r1, r1, $1 + and r0, r0, r1 + DO_RET (r14) +PSEUDO_END (__fork) +libc_hidden_def (__fork) + +weak_alias (__fork, fork) |