minix/lib/libc/arch/hppa/gen/_lwp.c
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

73 lines
2.5 KiB
C

/* $NetBSD: _lwp.c,v 1.5 2011/02/24 04:28:42 joerg Exp $ */
/*
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Wayne Knowles
*
* 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/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: _lwp.c,v 1.5 2011/02/24 04:28:42 joerg Exp $");
#endif /* LIBC_SCCS and not lint */
#include "namespace.h"
#include <sys/types.h>
#include <ucontext.h>
#include <lwp.h>
#include <stdlib.h>
#include <machine/frame.h>
void
_lwp_makecontext(ucontext_t *u, void (*start)(void *),
void *arg, void *private, caddr_t stack_base, size_t stack_size)
{
caddr_t sp;
__greg_t *gr;
__greg_t *gp;
__greg_t fp;
getcontext(u);
gr = u->uc_mcontext.__gregs;
u->uc_link = NULL;
u->uc_stack.ss_sp = stack_base;
u->uc_stack.ss_size = stack_size;
sp = stack_base + HPPA_FRAME_SIZE;
fp = (__greg_t)start;
if (fp & 2) {
gp = (__greg_t *)(fp & ~3);
fp = gp[0];
gr[_REG_R19] = gp[1];
}
gr[_REG_PCOQH] = fp | HPPA_PC_PRIV_USER;
gr[_REG_PCOQT] = (fp + 4) | HPPA_PC_PRIV_USER;
gr[_REG_RP] = (__greg_t) _lwp_exit;
gr[_REG_ARG0] = (__greg_t) arg;
gr[_REG_SP] = (__greg_t) sp;
gr[_REG_CR27] = (__greg_t) private;
}