1 | /* Copyright (C) 2001-2024 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 | stmg %r6,%r7,48(%r15) /* Save registers. */ |
25 | cfi_offset (%r7,-104) |
26 | cfi_offset (%r6,-112) |
27 | |
28 | lgr %r1,%r2 /* Move syscall number. */ |
29 | lgr %r2,%r3 /* First parameter. */ |
30 | lgr %r3,%r4 /* Second parameter. */ |
31 | lgr %r4,%r5 /* Third parameter. */ |
32 | lgr %r5,%r6 /* Fourth parameter. */ |
33 | lmg %r6,%r7,160(%r15) /* Fifth / Sixth parameter. */ |
34 | svc 0 |
35 | |
36 | lmg %r6,%r7,48(%r15) /* Load registers. */ |
37 | |
38 | lghi %r0,-4095 |
39 | clgr %r2,%r0 /* Check R2 for error. */ |
40 | jgnl SYSCALL_ERROR_LABEL |
41 | br %r14 /* Return to caller. */ |
42 | PSEUDO_END (syscall) |
43 | |