projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| bfff8b1b | 1 | /* Copyright (C) 2011-2017 Free Software Foundation, Inc. |
| 63d143a2 CM |
2 | This file is part of the GNU C Library. |
| 3 | Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. | |
| 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 | |
| ab84e3ff PE |
16 | License along with the GNU C Library. If not, see |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| 63d143a2 CM |
18 | |
| 19 | ||
| 20 | /* TILE-Gx specifies that "unsigned int" is sign extended in the high | |
| 21 | 32 bits. But since the userspace API claims to be "unsigned long", | |
| 22 | calls into __ioctl() will not be sign extended, but rather pass all | |
| 23 | 64 bits of the argument. Therefore, when we pass the "request" | |
| 24 | value to the kernel, we must explicitly sign-extend it to match the | |
| 25 | kernel's internal use of "unsigned int" as the second argument, | |
| 26 | which we do by casting to "unsigned int". */ | |
| 27 | ||
| 28 | #include <sysdep.h> | |
| 29 | ||
| 30 | .text | |
| 31 | ENTRY (__ioctl) | |
| 32 | FEEDBACK_ENTER(__ioctl) | |
| 33 | { | |
| 34 | addxi r1, r1, 0 | |
| 35 | moveli TREG_SYSCALL_NR_NAME, __NR_ioctl | |
| 36 | } | |
| 37 | swint1 | |
| 38 | BNEZ r1, 0f | |
| 39 | jrp lr | |
| 40 | PSEUDO_END (__ioctl) | |
| 9e5ee8b8 | 41 | libc_hidden_def (__ioctl) |
| 63d143a2 | 42 | weak_alias (__ioctl, ioctl) |