projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 04277e02 | 1 | /* Copyright (C) 2001-2019 Free Software Foundation, Inc. |
| 847b055c AJ |
2 | Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). |
| 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 | |
| 41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| 847b055c AJ |
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 | |
| 41bdb6e2 | 13 | Lesser General Public License for more details. |
| 847b055c | 14 | |
| 41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
| 59ba27a6 | 16 | License along with the GNU C Library; if not, see |
| 5cb226d7 | 17 | <https://www.gnu.org/licenses/>. */ |
| 847b055c AJ |
18 | |
| 19 | #include <sysdep.h> | |
| 20 | ||
| 21 | /* Please consult the file sysdeps/unix/sysv/linux/s390/sysdep.h for | |
| 22 | more information about the value -4095 used below.*/ | |
| 23 | ||
| 24 | ENTRY (syscall) | |
| 25 | /* Save registers and setup stack. */ | |
| ffeac417 | 26 | stmg %r6,%r15,48(%r15) /* Save registers. */ |
| 844a34a2 UD |
27 | cfi_offset (%r15,-40) |
| 28 | cfi_offset (%r14,-48) | |
| 29 | cfi_offset (%r13,-56) | |
| 30 | cfi_offset (%r12,-64) | |
| 31 | cfi_offset (%r11,-72) | |
| 32 | cfi_offset (%r10,-80) | |
| 33 | cfi_offset (%r9,-88) | |
| 34 | cfi_offset (%r8,-96) | |
| 35 | cfi_offset (%r7,-104) | |
| 36 | cfi_offset (%r6,-112) | |
| ffeac417 UD |
37 | lgr %r1,%r15 |
| 38 | lg %r0,8(%r15) /* Load eos. */ | |
| 39 | aghi %r15,-160 /* Buy stack space. */ | |
| 844a34a2 | 40 | cfi_adjust_cfa_offset (160) |
| ffeac417 UD |
41 | stg %r1,0(%r15) /* Store back chain. */ |
| 42 | stg %r0,8(%r15) /* Store eos. */ | |
| 9c84384c | 43 | |
| ffeac417 UD |
44 | lgr %r1,%r2 /* Move syscall number. */ |
| 45 | lgr %r2,%r3 /* First parameter. */ | |
| 46 | lgr %r3,%r4 /* Second parameter. */ | |
| 47 | lgr %r4,%r5 /* Third parameter. */ | |
| 48 | lgr %r5,%r6 /* Fourth parameter. */ | |
| 49 | lg %r6,320(%r15) /* Fifth parameter. */ | |
| 308bb2d5 | 50 | lg %r7,328(%r15) /* Sixth parameter. */ |
| 847b055c | 51 | |
| 35810f5c CB |
52 | svc 0 |
| 53 | lg %r15,0(%r15) /* Load back chain. */ | |
| 844a34a2 | 54 | cfi_adjust_cfa_offset (-160) |
| 35810f5c | 55 | lmg %r6,%r15,48(%r15) /* Load registers. */ |
| 847b055c | 56 | |
| ffeac417 UD |
57 | lghi %r0,-4095 |
| 58 | clgr %r2,%r0 /* Check R2 for error. */ | |
| e6ebd2e4 | 59 | jgnl SYSCALL_ERROR_LABEL |
| ffeac417 | 60 | br %r14 /* Return to caller. */ |
| 847b055c | 61 | PSEUDO_END (syscall) |