1 /* Copyright (C) 2001-2014 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
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
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
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.
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 <http://www.gnu.org/licenses/>. */
22 #include "ucontext_i.h"
24 /* __getcontext (const ucontext_t *ucp)
26 Saves the machine context in UCP such that when it is activated,
27 it appears as if __getcontext() returned again.
29 This implementation is intended to be used for *synchronous* context
30 switches only. Therefore, it does not have to save anything
31 other than the PRESERVED state. */
36 /* sigprocmask (SIG_BLOCK, NULL, &sc->sc_mask). */
41 svc SYS_ify(rt_sigprocmask)
43 /* Store fpu context. */
46 std %f1,SC_FPRS+8(%r1)
47 std %f2,SC_FPRS+16(%r1)
48 std %f3,SC_FPRS+24(%r1)
49 std %f4,SC_FPRS+32(%r1)
50 std %f5,SC_FPRS+40(%r1)
51 std %f6,SC_FPRS+48(%r1)
52 std %f7,SC_FPRS+56(%r1)
53 std %f8,SC_FPRS+64(%r1)
54 std %f9,SC_FPRS+72(%r1)
55 std %f10,SC_FPRS+80(%r1)
56 std %f11,SC_FPRS+88(%r1)
57 std %f12,SC_FPRS+96(%r1)
58 std %f13,SC_FPRS+104(%r1)
59 std %f14,SC_FPRS+112(%r1)
60 std %f15,SC_FPRS+120(%r1)
62 /* Set __getcontext return value to 0. */
65 /* Store access registers. */
66 stam %a0,%a15,SC_ACRS(%r1)
68 /* Store general purpose registers. */
69 stmg %r0,%r15,SC_GPRS(%r1)
75 weak_alias (__getcontext, getcontext)