1/* Copyright (C) 1997-2022 Free Software Foundation, Inc.
2
3   This file is part of the GNU C Library.
4
5   The GNU C Library is free software; you can redistribute it and/or
6   modify it under the terms of the GNU Lesser General Public License as
7   published by the Free Software Foundation; either version 2.1 of the
8   License, or (at your option) any later version.
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
13   Lesser General Public License for more details.
14
15   You should have received a copy of the GNU Lesser General Public
16   License along with the GNU C Library.  If not, see
17   <https://www.gnu.org/licenses/>.  */
18
19#include <sysdep.h>
20#include <jmpbuf-offsets.h>
21#include <stap-probe.h>
22
23        /* Keep traditional entry points in with sigsetjmp(). */
24ENTRY (setjmp)
25	mov	x1, #1
26	b	1f
27END (setjmp)
28
29ENTRY (_setjmp)
30	mov	x1, #0
31	b	1f
32END (_setjmp)
33libc_hidden_def (_setjmp)
34
35ENTRY (__sigsetjmp)
36	PTR_ARG (0)
37
381:
39	stp	x19, x20, [x0, #JB_X19<<3]
40	stp	x21, x22, [x0, #JB_X21<<3]
41	stp	x23, x24, [x0, #JB_X23<<3]
42	stp	x25, x26, [x0, #JB_X25<<3]
43	stp	x27, x28, [x0, #JB_X27<<3]
44
45#ifdef PTR_MANGLE
46	PTR_MANGLE (4, 30, 3, 2)
47	stp	x29,  x4, [x0, #JB_X29<<3]
48#else
49	stp	x29, x30, [x0, #JB_X29<<3]
50#endif
51	/* setjmp probe takes 3 arguments, address of jump buffer
52	   first argument (8@x0), return value second argument (-4@x1),
53	   and target address (8@x30), respectively.  */
54	LIBC_PROBE (setjmp, 3, 8@x0, -4@x1, 8@x30)
55	stp	 d8,  d9, [x0, #JB_D8<<3]
56	stp	d10, d11, [x0, #JB_D10<<3]
57	stp	d12, d13, [x0, #JB_D12<<3]
58	stp	d14, d15, [x0, #JB_D14<<3]
59#ifdef PTR_MANGLE
60	mov	x4, sp
61	PTR_MANGLE (5, 4, 3, 2)
62	str	x5, [x0, #JB_SP<<3]
63#else
64	mov	x2,  sp
65	str	x2,  [x0, #JB_SP<<3]
66#endif
67#if IS_IN (rtld)
68	/* In ld.so we never save the signal mask */
69	mov	w0, #0
70	RET
71#else
72	b	C_SYMBOL_NAME(__sigjmp_save)
73#endif
74END (__sigsetjmp)
75hidden_def (__sigsetjmp)
76