2003-01-20 00:31:42 +03:00
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/* $NetBSD: _context_u.S,v 1.2 2003/01/19 21:31:42 matt Exp $ */
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2003-01-20 00:01:55 +03:00
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/*-
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* Copyright (c) 2003 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Matt Thomas.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <machine/asm.h>
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#include "assym.h"
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ENTRY(_getcontext_u, 0)
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movl 4(%ap),%r0
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movl 16(%sp),%r3 /* save return pc */
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movl %r3,%r2 /* where to return */
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getc:
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movab 1f,16(%fp)
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ret
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1:
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_ALIGN_TEXT
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clrl (UC_GREGS + _REG_R0)(%r0) /* r0 */
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movq %r6,(UC_GREGS + _REG_R6)(%r0) /* r6/r7 */
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movq %r8,(UC_GREGS + _REG_R8)(%r0) /* r8/r9 */
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movq %r10,(UC_GREGS + _REG_R10)(%r0) /* r10/r11 */
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movq %ap,(UC_GREGS + _REG_AP)(%r0) /* ap/sp */
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movl %fp,(UC_GREGS + _REG_FP)(%r0) /* fp */
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movl %r2,(UC_GREGS + _REG_PC)(%r0) /* pc */
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movpsl (UC_GREGS + _REG_PSL)(%r0) /* psl(high) */
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movw 6(%fp),(UC_GREGS + _REG_PSL)(%r0) /* psl(low) */
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2003-01-20 00:31:42 +03:00
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bisl2 $(_UC_CPU+_UC_USER),(UC_FLAGS)(%r0)
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2003-01-20 00:01:55 +03:00
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clrl %r0
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jmp (%r3)
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ENTRY(_setcontext_u, 0)
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movl 4(%ap),%r1
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setc:
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2003-01-20 00:31:42 +03:00
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bitl $(_UC_USER),(UC_FLAGS)(%r1)
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bneq 1f
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pushl %r1
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calls $1,_C_LABEL(setcontext)
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halt
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1: movl (UC_GREGS + _REG_R0)(%r1),%r0 /* r0 */
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2003-01-20 00:01:55 +03:00
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movq (UC_GREGS + _REG_R6)(%r1),%r6 /* r6/r7 */
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movq (UC_GREGS + _REG_R8)(%r1),%r8 /* r8/r9 */
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movq (UC_GREGS + _REG_R10)(%r1),%r10 /* r10/r11 */
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movq (UC_GREGS + _REG_AP)(%r1),%ap /* ap/sp */
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movl (UC_GREGS + _REG_FP)(%r1),%fp /* fp */
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movq (UC_GREGS + _REG_PC)(%r1),-(%sp) /* pc/psl */
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rei /* return */
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ENTRY(_swapcontext_u, 0)
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movq 4(%ap),%r0
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movl 16(%sp),%r2 /* save return pc */
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movab setc,%r3 /* where to return */
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brw getc
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