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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/sys/contrib/openzfs/module/lua/setjmp/setjmp_arm.S
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// SPDX-License-Identifier: BSD-2-Clause

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/*-

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 * Copyright 2004-2014 Olivier Houchard <[email protected]>

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 * Copyright 2012-2014 Ian Lepore <[email protected]>

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 * Copyright 2013-2014 Andrew Turner <[email protected]>

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 * Copyright 2014 Svatopluk Kraus <[email protected]>

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 * Copyright 2014 Michal Meloun <[email protected]>

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 * All rights reserved.

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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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 *

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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND

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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

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 * SUCH DAMAGE.

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 */

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#if defined(__arm__) && !defined(__aarch64__)

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#if defined(__thumb2__)

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#define	_FUNC_MODE	.code 16; .thumb_func

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#else

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#define	_FUNC_MODE	.code 32

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#endif

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#define	ENTRY(x) \

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	.text; \

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	.syntax unified; \

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	.balign 2; \

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	.global x; \

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	.type x,#function; \

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	_FUNC_MODE; \

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x:

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#define	END(x) \

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	.size x, . - x;

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#define	RET	bx	lr

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/*

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 * setjump + longjmp

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 */

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ENTRY(setjmp)

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#if defined(__thumb2__)

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	mov	ip, sp

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	stmia	r0, {r4-r12,r14}

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#else

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	stmia	r0, {r4-r14}

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#endif

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	mov	r0, #0x00000000

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	RET

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END(setjmp)

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ENTRY(longjmp)

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#if defined(__thumb2__)

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	ldmia	r0, {r4-r12,r14}

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	mov	sp, ip

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#else

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	ldmia	r0, {r4-r14}

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#endif

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	mov	r0, #0x00000001

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	RET

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END(longjmp)

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#ifdef __ELF__

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.section .note.GNU-stack,"",%progbits

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#endif

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#endif

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