e415d48872
Bumping libc files for unsupported architectures, to simplify merging. A bunch of small fixes: * in libutil update * the macro in endian.h * some undefined types due to clear separation from host. * Fix a warning for cdbr.c Some modification which were required for the new build system: * inclusion path for const.h in sconst, still hacky * Removed default malloc.c which conflicts on some occasions.
68 lines
2.5 KiB
ArmAsm
68 lines
2.5 KiB
ArmAsm
/* $NetBSD: getcontext.S,v 1.6 2011/11/21 16:17:48 chs Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2003 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Matt Thomas.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include "SYS.h"
|
|
|
|
#ifdef SYSLIBC_SCCS
|
|
RCSID("$NetBSD: getcontext.S,v 1.6 2011/11/21 16:17:48 chs Exp $")
|
|
#endif
|
|
|
|
#ifdef WEAK_ALIAS
|
|
WEAK_ALIAS(getcontext, _getcontext)
|
|
#endif
|
|
|
|
/*
|
|
* Can't use R4 or R5 since those needed by the phread_switch code.
|
|
*/
|
|
ENTRY(_getcontext, 0)
|
|
clrl %r0 /* assume success */
|
|
chmk $SYS_getcontext /* getcontext(oucp) */
|
|
jcc 1f
|
|
jmp CERROR+2 /* badness happened */
|
|
|
|
1: movl 4(%ap),%r0 /* ptr to ucontext */
|
|
movl 16(%fp),%r1 /* PC to return to */
|
|
movab 2f,16(%fp) /* let's return early */
|
|
ret
|
|
/*
|
|
* Now we have the blown away the callframe and argument
|
|
* list so it's as if we've return from the function except
|
|
* we aren't executing the caller's code (yet). So it's
|
|
* the callers state but we still have control.
|
|
*/
|
|
_ALIGN_TEXT
|
|
2: movq %ap,(36+12*4)(%r0) /* adjust AP + SP */
|
|
movl %fp,(36+14*4)(%r0) /* adjust FP */
|
|
movl %r3,(36+15*4)(%r0) /* adjust PC */
|
|
clrl %r0
|
|
jmp (%r1) /* and return */
|
|
END(_getcontext)
|