f14fb60209
* Updating common/lib * Updating lib/csu * Updating lib/libc * Updating libexec/ld.elf_so * Corrected test on __minix in featuretest to actually follow the meaning of the comment. * Cleaned up _REENTRANT-related defintions. * Disabled -D_REENTRANT for libfetch * Removing some unneeded __NBSD_LIBC defines and tests Change-Id: Ic1394baef74d11b9f86b312f5ff4bbc3cbf72ce2
71 lines
2.5 KiB
C
71 lines
2.5 KiB
C
/* $NetBSD: _lwp.c,v 1.7 2011/02/24 04:28:43 joerg Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2001 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Nathan J. Williams.
|
|
*
|
|
* 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 1.7 2011/02/24 04:28:43 joerg Exp $");
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#include "namespace.h"
|
|
#include <sys/types.h>
|
|
#include <inttypes.h>
|
|
#include <ucontext.h>
|
|
#include <lwp.h>
|
|
#include <stdlib.h>
|
|
|
|
void
|
|
_lwp_makecontext(ucontext_t *u, void (*start)(void *),
|
|
void *arg, void *private, caddr_t stack_base, size_t stack_size)
|
|
{
|
|
__greg_t *gr = u->uc_mcontext.__gregs;
|
|
void **sp;
|
|
|
|
getcontext(u);
|
|
u->uc_link = NULL;
|
|
|
|
u->uc_stack.ss_sp = stack_base;
|
|
u->uc_stack.ss_size = stack_size;
|
|
|
|
/* LINTED uintptr_t is safe */
|
|
gr[_REG_RIP] = (uintptr_t)start;
|
|
|
|
sp = (void **) (((uintptr_t)(stack_base + stack_size) & ~15));
|
|
|
|
/* LINTED __greg_t is safe */
|
|
gr[_REG_RDI] = (__greg_t)arg;
|
|
*--sp = (void *) _lwp_exit;
|
|
|
|
/* LINTED uintptr_t is safe */
|
|
gr[_REG_URSP] = (uintptr_t) sp;
|
|
|
|
u->uc_mcontext._mc_tlsbase = (uintptr_t)private;
|
|
u->uc_flags |= _UC_TLSBASE;
|
|
}
|