1 | /* Copyright (C) 2000-2024 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <sysdep.h> |
19 | |
20 | /* Please consult the file sysdeps/unix/sysv/linux/s390/sysdep.h for |
21 | more information about the value -4095 used below.*/ |
22 | |
23 | ENTRY (syscall) |
24 | stm %r6,%r7,24(%r15) /* save registers */ |
25 | cfi_offset (%r7, -68) |
26 | cfi_offset (%r6, -72) |
27 | |
28 | lr %r1,%r2 /* move syscall number */ |
29 | lr %r2,%r3 /* first parameter */ |
30 | lr %r3,%r4 /* second parameter */ |
31 | lr %r4,%r5 /* third parameter */ |
32 | lr %r5,%r6 /* fourth parameter */ |
33 | lm %r6,%r7,96(%r15) /* fifth / sixth parameter */ |
34 | svc 0 |
35 | |
36 | lm %r6,%r7,24(%r15) /* load registers. */ |
37 | |
38 | lhi %r0,-4095 |
39 | clr %r2,%r0 /* check R2 for error */ |
40 | jnl SYSCALL_ERROR_LABEL |
41 | br %r14 /* return to caller */ |
42 | PSEUDO_END (syscall) |
43 | |