projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 2b778ceb | 1 | /* Copyright (C) 2001-2021 Free Software Foundation, Inc. |
| 816fc1ed UD |
2 | This file is part of the GNU C Library. |
| 3 | Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). | |
| 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. | |
| 816fc1ed UD |
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. |
| 816fc1ed | 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 |
| 5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
| 816fc1ed UD |
18 | |
| 19 | #include <sysdep.h> | |
| 20 | #include <features.h> | |
| 21 | ||
| 22 | #include "ucontext_i.h" | |
| 23 | ||
| 24 | /* __setcontext (const ucontext_t *ucp) | |
| 25 | ||
| 26 | Restores the machine context in UCP and thereby resumes execution | |
| 27 | in that context. | |
| 28 | ||
| 29 | This implementation is intended to be used for *synchronous* context | |
| 30 | switches only. Therefore, it does not have to restore anything | |
| 31 | other than the PRESERVED state. */ | |
| 32 | ||
| 33 | ENTRY(__setcontext) | |
| c3e94a95 | 34 | lr %r1,%r2 |
| 816fc1ed | 35 | |
| 05d138ef | 36 | /* rt_sigprocmask (SIG_SETMASK, &sc->sc_mask, NULL, sigsetsize). */ |
| 2e807f29 | 37 | la %r2,SIG_SETMASK |
| c3e94a95 | 38 | la %r3,SC_MASK(%r1) |
| 816fc1ed | 39 | slr %r4,%r4 |
| c3e94a95 | 40 | lhi %r5,_NSIG8 |
| 816fc1ed UD |
41 | svc SYS_ify(rt_sigprocmask) |
| 42 | ||
| 43 | /* Load fpu context. */ | |
| c3e94a95 AK |
44 | lfpc SC_FPC(%r1) |
| 45 | ld %f0,SC_FPRS(%r1) | |
| 46 | ld %f1,SC_FPRS+8(%r1) | |
| 47 | ld %f2,SC_FPRS+16(%r1) | |
| 48 | ld %f3,SC_FPRS+24(%r1) | |
| 49 | ld %f4,SC_FPRS+32(%r1) | |
| 50 | ld %f5,SC_FPRS+40(%r1) | |
| 51 | ld %f6,SC_FPRS+48(%r1) | |
| 52 | ld %f7,SC_FPRS+56(%r1) | |
| 53 | ld %f8,SC_FPRS+64(%r1) | |
| 54 | ld %f9,SC_FPRS+72(%r1) | |
| 55 | ld %f10,SC_FPRS+80(%r1) | |
| 56 | ld %f11,SC_FPRS+88(%r1) | |
| 57 | ld %f12,SC_FPRS+96(%r1) | |
| 58 | ld %f13,SC_FPRS+104(%r1) | |
| 59 | ld %f14,SC_FPRS+112(%r1) | |
| 60 | ld %f15,SC_FPRS+120(%r1) | |
| 9c84384c | 61 | |
| 8e294940 | 62 | /* Don't touch %a0, used for thread purposes. */ |
| c3e94a95 | 63 | lam %a1,%a15,SC_ACRS+4(%r1) |
| 8e294940 | 64 | |
| 816fc1ed | 65 | /* Load general purpose registers. */ |
| 2f438e20 | 66 | lm %r0,%r15,SC_GPRS(%r1) |
| 816fc1ed | 67 | |
| 58f46c79 | 68 | /* Return. */ |
| 816fc1ed UD |
69 | br %r14 |
| 70 | END(__setcontext) | |
| 71 | ||
| 1ab18a5b | 72 | weak_alias (__setcontext, setcontext) |