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
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
/* Copyright (C) 1996, 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 <features.h>
#include <sys/asm.h>
#include <sys/regdef.h>
#ifdef __PIC__
.option pic2
#endif
.text
.align 2
.globl syscall
.type syscall,@function
.ent syscall
syscall:
move v0, a0 /* Load system call number from first arg. */
move a0, a1 /* Move the next three args up a register. */
move a1, a2
move a2, a3
/* Load the remaining possible args (up to 7) from the stack. */
#ifdef __mips64
move a3, a4
move a4, a5
move a5, a6
move a6, a7
daddiu sp,sp,-16
sd v0,0*8(sp)
ld v0,0*8(sp) /* for system call restarts */
#else
lw a3,4*4(sp)
lw t0,5*4(sp)
lw t1,6*4(sp)
lw t2,7*4(sp)
addiu sp,sp,-32
sw t0,4*4(sp)
sw t1,5*4(sp)
sw t2,6*4(sp)
sw v0,7*4(sp)
lw v0,7*4(sp) /* for system call restarts */
#endif
syscall /* Do the system call. */
#ifdef __mips64
daddiu sp,sp,16
#else
addiu sp,sp,32
#endif
j ra /* Return to caller. */
.end syscall
.size syscall,.-syscall
|