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- /* Copyright (C) 1991, 92, 94, 95, 97, 99 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>
- .text;
- .global fork;
- .align 4;
- fork: ;
- .type fork ,@function; ;
- mov 2, %g1 ;
- ta 0x10;
- bcc,a 9000f;
- nop;
- save %sp,-96,%sp;
- call __errno_location;
- nop;
- st %i0,[%o0];
- jmpl %i7+8,%g0;
- restore %g0,-1,%o0; ;
- 9000:;
- /* %o1 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 %o0, so the parent gets
- %o0&-1==pid, and the child gets %o0&0==0. */
- sub %o1, 1, %o1
- retl
- and %o0, %o1, %o0
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