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
|
/* syscall - indirect system call.
Copyright (C) 2005-2022 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, see
<https://www.gnu.org/licenses/>. */
#include <sysdep.h>
/* We don't need a special syscall to implement syscall(). It won't work
reliably with 64-bit arguments (but that is true on many modern platforms).
*/
ENTRY (syscall)
mov r2, r4
mov r4, r5
mov r5, r6
mov r6, r7
ldw r7, 0(sp)
ldw r8, 4(sp)
ldw r9, 8(sp)
trap
bne r7, zero, SYSCALL_ERROR_LABEL
ret
PSEUDO_END (syscall)
|
