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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/sys/contrib/openzfs/module/lua/setjmp/setjmp_rv64g.S
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// SPDX-License-Identifier: BSD-2-Clause

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/*-

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 * Copyright (c) 2015-2016 Ruslan Bukin <[email protected]>

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 * All rights reserved.

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 *

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 * Portions of this software were developed by SRI International and the

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 * University of Cambridge Computer Laboratory under DARPA/AFRL contract

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 * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.

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 *

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 * Portions of this software were developed by the University of Cambridge

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 * Computer Laboratory as part of the CTSRD Project, with support from the

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 * UK Higher Education Innovation Fund (HEIF).

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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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#define ENTRY(sym)                                              \

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        .text; .globl sym; .type sym,@function; sym:

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#define END(sym) .size sym, . - sym

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ENTRY(setjmp)

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	/* Store the stack pointer */

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	sd	sp, (0 * 8)(a0)

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	addi	a0, a0, (1 * 8)

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	/* Store the general purpose registers and ra */

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	sd	s0, (0 * 8)(a0)

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	sd	s1, (1 * 8)(a0)

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	sd	s2, (2 * 8)(a0)

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	sd	s3, (3 * 8)(a0)

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	sd	s4, (4 * 8)(a0)

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	sd	s5, (5 * 8)(a0)

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	sd	s6, (6 * 8)(a0)

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	sd	s7, (7 * 8)(a0)

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	sd	s8, (8 * 8)(a0)

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	sd	s9, (9 * 8)(a0)

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	sd	s10, (10 * 8)(a0)

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	sd	s11, (11 * 8)(a0)

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	sd	ra, (12 * 8)(a0)

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	addi	a0, a0, (13 * 8)

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	/* Return value */

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	li	a0, 0

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	ret

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END(setjmp)

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ENTRY(longjmp)

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	/* Restore the stack pointer */

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	ld	t0, 0(a0)

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	mv	sp, t0

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	addi	a0, a0, (1 * 8)

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	/* Restore the general purpose registers and ra */

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	ld	s0, (0 * 8)(a0)

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	ld	s1, (1 * 8)(a0)

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	ld	s2, (2 * 8)(a0)

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	ld	s3, (3 * 8)(a0)

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	ld	s4, (4 * 8)(a0)

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	ld	s5, (5 * 8)(a0)

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	ld	s6, (6 * 8)(a0)

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	ld	s7, (7 * 8)(a0)

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	ld	s8, (8 * 8)(a0)

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	ld	s9, (9 * 8)(a0)

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	ld	s10, (10 * 8)(a0)

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	ld	s11, (11 * 8)(a0)

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	ld	ra, (12 * 8)(a0)

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	addi	a0, a0, (13 * 8)

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	/* Load the return value */

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	mv	a0, a1

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	ret

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END(longjmp)

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