1 /*
2 * Copyright (C) 2008 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in
12 * the documentation and/or other materials provided with the
13 * distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
29 #include <private/bionic_asm.h>
30 #include <linux/sched.h>
32 // TODO: mips' uapi signal.h is missing #ifndef __ASSEMBLY__.
33 // #include <asm/signal.h>
34 #define SIGCHLD 18
36 .text
38 #if (_MIPS_SIM == _ABIO32) || (_MIPS_SIM == _ABI32)
39 FRAMESZ = MKFSIZ(5,0)
40 #else
41 FRAMESZ = MKFSIZ(0,0)
42 #endif
44 LEAF(vfork,FRAMESZ)
45 #if FRAMESZ!=0
46 PTR_SUBU sp, FRAMESZ
47 #endif
48 SETUP_GP64(a5, vfork)
49 LI a0, (CLONE_VM | CLONE_VFORK | SIGCHLD)
50 move a1, $0
51 move a2, $0
52 move a3, $0
53 #if (_MIPS_SIM == _ABIO32) || (_MIPS_SIM == _ABI32)
54 REG_S $0, 4*REGSZ(sp)
55 #else
56 move a4, $0
57 #endif
58 LI v0, __NR_clone
59 syscall
60 #if FRAMESZ!=0
61 PTR_ADDU sp,FRAMESZ
62 #endif
63 move a0, v0
64 bnez a3, 1f
65 RESTORE_GP64
66 j ra
67 1:
68 LA t9,__set_errno_internal
69 RESTORE_GP64
70 j t9
71 END(vfork)