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522e6ee3 | 1 | /* syscall - indirect system call. |
2b778ceb | 2 | Copyright (C) 2005-2021 Free Software Foundation, Inc. |
522e6ee3 CLT |
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 | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the 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 | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
522e6ee3 CLT |
18 | |
19 | #include <sysdep.h> | |
20 | ||
21 | /* We don't need a special syscall to implement syscall(). It won't work | |
22 | reliably with 64-bit arguments (but that is true on many modern platforms). | |
23 | */ | |
24 | ||
25 | ENTRY (syscall) | |
26 | mov r2, r4 | |
27 | mov r4, r5 | |
28 | mov r5, r6 | |
29 | mov r6, r7 | |
30 | ldw r7, 0(sp) | |
31 | ldw r8, 4(sp) | |
32 | ldw r9, 8(sp) | |
33 | trap | |
34 | bne r7, zero, SYSCALL_ERROR_LABEL | |
35 | ret | |
36 | PSEUDO_END (syscall) |