1/* Copyright (C) 1997-2022 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/* longjmp is implemented in terms of the setcontext trap on Linux/Sparc64.  */
19
20#include <sysdep.h>
21
22/* Offsets into the jmp_buf structure.  */
23
24#define O_mask_was_saved	512
25#define O_gregs			32
26#define O_g1			(O_gregs + 4*8)
27
28
29/* void longjmp (sigjmp_buf env, int val) */
30
31ENTRY(__libc_siglongjmp)
32
33	/* Modify the context with the value we want to return.  */
34	movre	%o1, 1, %o1
35	stx	%o1, [%o0 + O_g1]
36
37	/* Let setcontext know if we want to modify the current sigmask. */
38	ld	[%o0 + O_mask_was_saved], %o1
39
40	/* And bamf back to where we belong!  */
41	ta	0x6f
42
43END(__libc_siglongjmp)
44
45strong_alias(__libc_siglongjmp, __longjmp)
46strong_alias(__libc_siglongjmp, __libc_longjmp)
47weak_alias (__libc_siglongjmp, longjmp)
48weak_alias (__libc_siglongjmp, _longjmp)
49weak_alias (__libc_siglongjmp, siglongjmp)
50