mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-27 04:41:02 +08:00
76 lines
2.2 KiB
ArmAsm
76 lines
2.2 KiB
ArmAsm
/* Copyright (C) 2001 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <sysdep.h>
|
|
#include <features.h>
|
|
|
|
#include "ucontext_i.h"
|
|
|
|
/* __getcontext (const ucontext_t *ucp)
|
|
|
|
Saves the machine context in UCP such that when it is activated,
|
|
it appears as if __getcontext() returned again.
|
|
|
|
This implementation is intended to be used for *synchronous* context
|
|
switches only. Therefore, it does not have to save anything
|
|
other than the PRESERVED state. */
|
|
|
|
ENTRY(__getcontext)
|
|
lr %r5,%r2
|
|
|
|
/* sigprocmask (SIG_BLOCK, NULL, &sc->sc_mask). */
|
|
la %r2,SIG_BLOCK
|
|
slr %r3,%r3
|
|
la %r4,SC_MASK(%r5)
|
|
svc SYS_ify(rt_sigprocmask)
|
|
|
|
/* Store fpu context. */
|
|
stfpc SC_FPC(%r5)
|
|
std %f0,SC_FPRS(%r5)
|
|
std %f1,SC_FPRS+8(%r5)
|
|
std %f2,SC_FPRS+16(%r5)
|
|
std %f3,SC_FPRS+24(%r5)
|
|
std %f4,SC_FPRS+32(%r5)
|
|
std %f5,SC_FPRS+40(%r5)
|
|
std %f6,SC_FPRS+48(%r5)
|
|
std %f7,SC_FPRS+56(%r5)
|
|
std %f8,SC_FPRS+64(%r5)
|
|
std %f9,SC_FPRS+72(%r5)
|
|
std %f10,SC_FPRS+80(%r5)
|
|
std %f11,SC_FPRS+88(%r5)
|
|
std %f12,SC_FPRS+96(%r5)
|
|
std %f13,SC_FPRS+104(%r5)
|
|
std %f14,SC_FPRS+112(%r5)
|
|
std %f15,SC_FPRS+120(%r5)
|
|
|
|
/* Set __getcontext return value to 0. */
|
|
slr %r2,%r2
|
|
|
|
/* Store access registers. */
|
|
stam %a0,%a15,SC_ACRS(%r5)
|
|
|
|
/* Store general purpose registers. */
|
|
stm %r0,%r15,SC_GPRS(%r5)
|
|
|
|
/* Return. */
|
|
br %r14
|
|
END(__getcontext)
|
|
|
|
weak_alias (__getcontext, getcontext)
|