1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
/* Copyright (C) 1993, 1994, 1995, 1997 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>
ENTRY (__waitpid)
/* The `waitpid' system call is distinguished from plain
`wait' by setting lots of bits in the processor flags. */
pushfl /* Push the flags word. */
popl %eax /* Pop it into the accumulator. */
orl $0x8c4, %eax /* Set lots of bits. */
pushl %eax /* Push the new flags word. */
popfl /* Pop it into the flags. */
DO_CALL (wait, 2)
movl 8(%esp), scratch /* Put status pointer in scratch register. */
testl scratch, scratch /* Is it non-nil? */
je null
movl r1, (scratch) /* Yes; store the status there. */
null: ret
weak_alias (__waitpid, waitpid)
|
