1/*
2 * Copyright (C) 2013 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 */
28
29#include <private/bionic_asm.h>
30
31#if (_MIPS_SIM == _ABIO32) || (_MIPS_SIM == _ABI32)
32FRAMESZ		=	MKFSIZ(6,0)
33#else
34FRAMESZ		=	MKFSIZ(0,1)
35FRAME_GP	=	FRAMESZ-1*REGSZ
36#endif
37
38LEAF(syscall,FRAMESZ)
39	PTR_SUBU sp, FRAMESZ	# allocate stack frame
40	SETUP_GP64(FRAME_GP,syscall)
41	SAVE_GP(FRAME_GP)
42	move	v0, a0		# syscall number to v0
43	move	a0, a1		# shift args down
44	move	a1, a2
45	move	a2, a3
46#if (_MIPS_SIM == _ABIO32) || (_MIPS_SIM == _ABI32)
47	REG_L	a3, FRAMESZ+4*REGSZ(sp)
48	REG_L	t0, FRAMESZ+5*REGSZ(sp)
49	REG_L	t1, FRAMESZ+6*REGSZ(sp)
50	REG_S	t0, 4*REGSZ(sp)
51	REG_S	t1, 5*REGSZ(sp)
52#else
53	move	a3, a4
54	move	a4, a5
55	move	a5, a6
56#endif
57	syscall
58	move	a0, v0
59	bnez	a3, 1f
60	RESTORE_GP64
61	PTR_ADDU sp, FRAMESZ
62	j	ra
631:
64	LA	t9,__set_errno_internal
65	RESTORE_GP64
66	PTR_ADDU sp, FRAMESZ
67	j	t9
68	END(syscall)
69