minix/lib/libc/arch/vax/gen/swapcontext.S
Lionel Sambuc e415d48872 Libc update to simplify merge.
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.
2012-11-15 16:07:29 +01:00

55 lines
2.2 KiB
ArmAsm

/* $NetBSD: swapcontext.S,v 1.4 2011/01/25 02:38:15 matt 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 LIBC_SCCS
RCSID("$NetBSD: swapcontext.S,v 1.4 2011/01/25 02:38:15 matt Exp $")
#endif
ENTRY(swapcontext, 0)
clrl %r0 /* assume getcontext succeeds */
chmk $SYS_getcontext /* getcontext(oucp) */
jcc 1f
jmp CERROR+2 /* something bad happened */
1: movl 4(%ap),%r0 /* get oucp */
addl3 (%ap),$(5+1),%r1 /* size of callframe + arglist (LW) */
bbs $13,6(%fp),2f /* was this a CALLG? */
movl $5,%r1 /* size of callframe (in LW) */
2: movl 8(%fp),(36+12*4)(%r0) /* restore AP */
moval (%sp)[%r1],(36+13*4)(%r0) /* restore SP */
movq 12(%fp),(36+14*4)(%r0) /* restore FP + PC */
pushl 8(%ap)
calls $1,_C_LABEL(setcontext) /* setcontext(ucp) */
ret
END(swapcontext)