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d614a753 | 1 | /* Copyright (C) 1997-2020 Free Software Foundation, Inc. |
41bdb6e2 | 2 | This file is part of the GNU C Library. |
5ae3e846 | 3 | Contributed by Richard Henderson (rth@tamu.edu). |
28f540f4 | 4 | |
c84142e8 | 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. | |
28f540f4 | 9 | |
c84142e8 UD |
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. |
28f540f4 | 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/>. */ |
28f540f4 | 18 | |
5ae3e846 | 19 | /* longjmp is implemented in terms of the setcontext trap on Linux/Sparc64. */ |
28f540f4 | 20 | |
5ae3e846 | 21 | #include <sysdep.h> |
28f540f4 | 22 | |
5ae3e846 | 23 | /* Offsets into the jmp_buf structure. */ |
28f540f4 | 24 | |
5ae3e846 UD |
25 | #define O_mask_was_saved 512 |
26 | #define O_gregs 32 | |
27 | #define O_g1 (O_gregs + 4*8) | |
28 | ||
29 | ||
30 | /* void longjmp (sigjmp_buf env, int val) */ | |
31 | ||
e0ea3583 | 32 | ENTRY(__libc_siglongjmp) |
5ae3e846 UD |
33 | |
34 | /* Modify the context with the value we want to return. */ | |
35 | movre %o1, 1, %o1 | |
36 | stx %o1, [%o0 + O_g1] | |
37 | ||
38 | /* Let setcontext know if we want to modify the current sigmask. */ | |
39 | ld [%o0 + O_mask_was_saved], %o1 | |
40 | ||
41 | /* And bamf back to where we belong! */ | |
42 | ta 0x6f | |
43 | ||
e0ea3583 | 44 | END(__libc_siglongjmp) |
ca34d7a7 | 45 | |
e0ea3583 UD |
46 | strong_alias(__libc_siglongjmp, __longjmp) |
47 | strong_alias(__libc_siglongjmp, __libc_longjmp) | |
1ab18a5b UD |
48 | weak_alias (__libc_siglongjmp, longjmp) |
49 | weak_alias (__libc_siglongjmp, _longjmp) | |
50 | weak_alias (__libc_siglongjmp, siglongjmp) |