1 /* Copyright (C) 1991-2021 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, see
16 <https://www.gnu.org/licenses/>. */
17
18 /* Versioned copy of sysdeps/generic/longjmp.c modified for AltiVec support. */
19
20 #include <shlib-compat.h>
21 #include <stddef.h>
22 #include <setjmp.h>
23 #include <signal.h>
24
25 extern void __vmx__longjmp (__jmp_buf __env, int __val)
26 __attribute__ ((noreturn));
27 extern void __vmx__libc_longjmp (sigjmp_buf env, int val)
28 __attribute__ ((noreturn));
libc_hidden_proto(__vmx__libc_longjmp)29 libc_hidden_proto (__vmx__libc_longjmp)
30
31 /* Set the signal mask to the one specified in ENV, and jump
32 to the position specified in ENV, causing the setjmp
33 call there to return VAL, or 1 if VAL is 0. */
34 void
35 __vmx__libc_siglongjmp (sigjmp_buf env, int val)
36 {
37 /* Perform any cleanups needed by the frames being unwound. */
38 _longjmp_unwind (env, val);
39
40 if (env[0].__mask_was_saved)
41 /* Restore the saved signal mask. */
42 (void) __sigprocmask (SIG_SETMASK, &env[0].__saved_mask,
43 (sigset_t *) NULL);
44
45 /* Call the machine-dependent function to restore machine state. */
46 __vmx__longjmp (env[0].__jmpbuf, val ?: 1);
47 }
48
49 strong_alias (__vmx__libc_siglongjmp, __vmx__libc_longjmp)
50 libc_hidden_def (__vmx__libc_longjmp)
51
52 strong_alias (__vmx__libc_longjmp, __libc_longjmp)
53 strong_alias (__vmx__libc_siglongjmp, __libc_siglongjmp)
54 versioned_symbol (libc, __vmx__libc_siglongjmp, _longjmp, GLIBC_2_3_4);
55 versioned_symbol (libc, __vmx__libc_siglongjmp, longjmp, GLIBC_2_3_4);
56 versioned_symbol (libc, __vmx__libc_siglongjmp, siglongjmp, GLIBC_2_3_4);
57