| yuezonghe | 824eb0c | 2024-06-27 02:32:26 -0700 | [diff] [blame^] | 1 | /* Copyright (C) 1991, 92, 94, 95, 97, 98, 2000 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. |
| 3 | |
| 4 | The GNU C Library is free software; you can redistribute it and/or |
| 5 | modify it under the terms of the GNU Lesser General Public |
| 6 | License as published by the Free Software Foundation; either |
| 7 | version 2.1 of the License, or (at your option) any later version. |
| 8 | |
| 9 | The GNU C Library is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | Lesser General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU Lesser General Public |
| 15 | License along with the GNU C Library; if not, write to the Free |
| 16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 17 | 02111-1307 USA. */ |
| 18 | |
| 19 | #include <stddef.h> |
| 20 | #include <setjmp.h> |
| 21 | #include <signal.h> |
| 22 | |
| 23 | |
| 24 | extern void __longjmp (__jmp_buf __env, int __val) attribute_noreturn; |
| 25 | libc_hidden_proto(__longjmp) |
| 26 | |
| 27 | #ifdef __UCLIBC_HAS_THREADS_NATIVE__ |
| 28 | extern void _longjmp_unwind (jmp_buf env, int val); |
| 29 | #endif |
| 30 | |
| 31 | extern __typeof(longjmp) __libc_longjmp attribute_noreturn; |
| 32 | /* Set the signal mask to the one specified in ENV, and jump |
| 33 | to the position specified in ENV, causing the setjmp |
| 34 | call there to return VAL, or 1 if VAL is 0. */ |
| 35 | void __libc_longjmp (sigjmp_buf env, int val) |
| 36 | { |
| 37 | #ifdef __UCLIBC_HAS_THREADS_NATIVE__ |
| 38 | /* Perform any cleanups needed by the frames being unwound. */ |
| 39 | _longjmp_unwind (env, val); |
| 40 | #endif |
| 41 | |
| 42 | if (env[0].__mask_was_saved) |
| 43 | /* Restore the saved signal mask. */ |
| 44 | (void) sigprocmask (SIG_SETMASK, &env[0].__saved_mask, NULL); |
| 45 | |
| 46 | /* Call the machine-dependent function to restore machine state. */ |
| 47 | __longjmp (env[0].__jmpbuf, val ?: 1); |
| 48 | } |
| 49 | |
| 50 | weak_alias(__libc_longjmp,longjmp) |
| 51 | weak_alias(__libc_longjmp,siglongjmp) |
| 52 | strong_alias(__libc_longjmp,__libc_siglongjmp) |
| 53 | strong_alias(__libc_longjmp,_longjmp) |