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