]>
Commit | Line | Data |
---|---|---|
b168057a | 1 | /* Copyright (C) 2005-2015 Free Software Foundation, Inc. |
554066b8 MS |
2 | |
3 | This file is part of the GNU C Library. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public License as | |
7 | published by the Free Software Foundation; either version 2.1 of the | |
8 | License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <sysdep.h> | |
20 | ||
21 | /* syscall (int nr, ...) | |
22 | ||
23 | AArch64 system calls take between 0 and 7 arguments. On entry here nr | |
24 | is in w0 and any other system call arguments are in register x1..x7. | |
25 | ||
26 | For kernel entry we need to move the system call nr to x8 then | |
27 | load the remaining arguments to register. */ | |
28 | ||
29 | ENTRY (syscall) | |
30 | uxtw x8, w0 | |
31 | mov x0, x1 | |
32 | mov x1, x2 | |
33 | mov x2, x3 | |
34 | mov x3, x4 | |
35 | mov x4, x5 | |
36 | mov x5, x6 | |
37 | mov x6, x7 | |
38 | svc 0x0 | |
39 | cmn x0, #4095 | |
40 | b.cs 1f | |
41 | RET | |
42 | 1: | |
43 | b SYSCALL_ERROR | |
44 | PSEUDO_END (syscall) |