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#include <sysdep.h>
19#include "ucontext_i.h"
20
21/* int getcontext(ucontext_t *); */
22
23ENTRY(__getcontext)
24
25 ldx [%o0 + UC_LINK], %o1 /* Preserve uc_link field, the
26 trap clears it. */
27 ta 0x6e
281:
29 ldx [%o0 + UC_M_PC], %o2
30 ldx [%o0 + UC_M_NPC], %o3
31 ldx [%o0 + __UC_SIGMASK], %o4
32 stx %o1, [%o0 + UC_LINK]
33 add %o2, 2f - 1b, %o2
34 stx %o2, [%o0 + UC_M_PC]
35 add %o3, 2f - 1b, %o3
36 stx %o3, [%o0 + UC_M_NPC]
37#if SIGMASK_WORDS == 16
38 stx %o4, [%o0 + UC_SIGMASK]
39 stx %g0, [%o0 + UC_SIGMASK + 8]
40 stx %g0, [%o0 + UC_SIGMASK + 16]
41 stx %g0, [%o0 + UC_SIGMASK + 24]
42 stx %g0, [%o0 + UC_SIGMASK + 32]
43 stx %g0, [%o0 + UC_SIGMASK + 40]
44 stx %g0, [%o0 + UC_SIGMASK + 48]
45 stx %g0, [%o0 + UC_SIGMASK + 56]
46 stx %g0, [%o0 + UC_SIGMASK + 64]
47 stx %g0, [%o0 + UC_SIGMASK + 72]
48 stx %g0, [%o0 + UC_SIGMASK + 80]
49 stx %g0, [%o0 + UC_SIGMASK + 88]
50 stx %g0, [%o0 + UC_SIGMASK + 96]
51 stx %g0, [%o0 + UC_SIGMASK + 104]
52 stx %g0, [%o0 + UC_SIGMASK + 112]
53 stx %g0, [%o0 + UC_SIGMASK + 120]
54#else
55# error Adjust __getcontext
56#endif
572:
58 retl
59 clr %o0
60
61END(__getcontext)
62
63weak_alias (__getcontext, getcontext)
64

source code of glibc/sysdeps/unix/sysv/linux/sparc/sparc64/getcontext.S