/*

 * CDDL HEADER START

 *

 * The contents of this file are subject to the terms of the

 * Common Development and Distribution License (the "License").

 * You may not use this file except in compliance with the License.

 *

 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

 * or http://www.opensolaris.org/os/licensing.

 * See the License for the specific language governing permissions

 * and limitations under the License.

 *

 * When distributing Covered Code, include this CDDL HEADER in each

 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.

 * If applicable, add the following below this CDDL HEADER, with the

 * fields enclosed by brackets "[]" replaced with your own identifying

 * information: Portions Copyright [yyyy] [name of copyright owner]

 *

 * CDDL HEADER END

 */

/*

 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.

 * Use is subject to license terms.

 */

#include <SYS.h>

	/ This is where execution resumes when a thread created with

	/ thr_create() or pthread_create() returns (see setup_context()).

	/ We pass the (void *) return value to _thrp_terminate().

	ENTRY(_lwp_start)

	addl	$4, %esp

	pushl	%eax

	call	_thrp_terminate

	addl	$4, %esp	/ actually, never returns

	SET_SIZE(_lwp_start)

	/ All we need to do now is (carefully) call lwp_exit().

	ENTRY(_lwp_terminate)

	SYSTRAP_RVAL1(lwp_exit)

	RET		/ if we return, it is very bad

	SET_SIZE(_lwp_terminate)

	ENTRY(set_curthread)

	movl	4(%esp), %eax

	movl	%eax, %gs:0

	ret

	SET_SIZE(set_curthread)

	ENTRY(__lwp_park)

	popl	%edx		/ add subcode; save return address

	pushl	$0

	pushl	%edx

	SYSTRAP_RVAL1(lwp_park)

	SYSLWPERR

	popl	%edx		/ restore return address

	movl	%edx, 0(%esp)

	RET

	SET_SIZE(__lwp_park)

	ENTRY(__lwp_unpark)

	popl	%edx		/ add subcode; save return address

	pushl	$1

	pushl	%edx

	SYSTRAP_RVAL1(lwp_park)

	SYSLWPERR

	popl	%edx		/ restore return address

	movl	%edx, 0(%esp)

	RET

	SET_SIZE(__lwp_unpark)

	ENTRY(__lwp_unpark_all)

	popl	%edx		/ add subcode; save return address

	pushl	$2

	pushl	%edx

	SYSTRAP_RVAL1(lwp_park)

	SYSLWPERR

	popl	%edx		/ restore return address

	movl	%edx, 0(%esp)

	RET

	SET_SIZE(__lwp_unpark_all)

/*

 * __sighndlr(int sig, siginfo_t *si, ucontext_t *uc, void (*hndlr)())

 *

 * This is called from sigacthandler() for the entire purpose of

 * communicating the ucontext to java's stack tracing functions.

 */

	ENTRY(__sighndlr)

	.globl	__sighndlrend

	pushl	%ebp

	movl	%esp, %ebp

	pushl	16(%ebp)

	pushl	12(%ebp)

	pushl	8(%ebp)

	call	*20(%ebp)

	addl	$12, %esp

	leave

	ret

__sighndlrend:

	SET_SIZE(__sighndlr)

/*

 * int _sigsetjmp(sigjmp_buf env, int savemask)

 *

 * This version is faster than the old non-threaded version because we

 * don't normally have to call __getcontext() to get the signal mask.

 * (We have a copy of it in the ulwp_t structure.)

 */

#undef	sigsetjmp

	ENTRY2(sigsetjmp,_sigsetjmp)	/ EIP already pushed

	pusha				/ EAX .. EDI

	push	%ds			/ segment registers

	push	%es

	push	%fs

	push	%gs

	push	%ss

	push	%cs

	/ args:  cs, ss, gs, ..., eip, env, savemask

	call	__csigsetjmp

	addl	$56, %esp		/ pop 14 words

	ret

	SET_SIZE(sigsetjmp)

	SET_SIZE(_sigsetjmp)