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/*-
* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* $FreeBSD$
*/
#include <machine/asm.h>
#if 0
#if defined(LIBC_SCCS)
.text
.asciz "$OpenBSD: _setjmp.S,v 1.6 1996/09/23 21:27:53 imp Exp $"
#endif /* LIBC_SCCS */
#endif
/*
* C library -- _setjmp, _longjmp
*
* _longjmp(a,v)
* will generate a "return(v)" from
* the last call to
* _setjmp(a)
* by restoring registers from the stack,
* The previous signal state is NOT restored.
*/
LEAF(_setjmp)
.set noreorder
REG_LI v0, _JB_MAGIC__SETJMP # sigcontext magic number
REG_S v0, (_JB_MAGIC * SZREG)(a0) # saved in sc_regs[0]
REG_S ra, (_JB_REG_RA * SZREG)(a0) # sc_pc = return address
REG_S s0, (_JB_REG_S0 * SZREG)(a0)
REG_S s1, (_JB_REG_S1 * SZREG)(a0)
REG_S s2, (_JB_REG_S2 * SZREG)(a0)
REG_S s3, (_JB_REG_S3 * SZREG)(a0)
REG_S s4, (_JB_REG_S4 * SZREG)(a0)
REG_S s5, (_JB_REG_S5 * SZREG)(a0)
REG_S s6, (_JB_REG_S6 * SZREG)(a0)
REG_S s7, (_JB_REG_S7 * SZREG)(a0)
REG_S sp, (_JB_REG_SP * SZREG)(a0)
REG_S s8, (_JB_REG_S8 * SZREG)(a0)
j ra
move v0, zero
END(_setjmp)
LEAF(_longjmp)
#ifdef ABICALLS
subu sp, sp, 32
.cprestore 16
#endif
.set noreorder
REG_L v0, (_JB_MAGIC * SZREG)(a0) # get magic number
REG_L ra, (_JB_REG_RA * SZREG)(a0)
bne v0, _JB_MAGIC__SETJMP, botch # jump if error
addu sp, sp, 32 # does not matter, sanity
REG_L s0, (_JB_REG_S0 * SZREG)(a0)
REG_L s1, (_JB_REG_S1 * SZREG)(a0)
REG_L s2, (_JB_REG_S2 * SZREG)(a0)
REG_L s3, (_JB_REG_S3 * SZREG)(a0)
REG_L s4, (_JB_REG_S4 * SZREG)(a0)
REG_L s5, (_JB_REG_S5 * SZREG)(a0)
REG_L s6, (_JB_REG_S6 * SZREG)(a0)
REG_L s7, (_JB_REG_S7 * SZREG)(a0)
REG_L sp, (_JB_REG_SP * SZREG)(a0)
REG_L s8, (_JB_REG_S8 * SZREG)(a0)
j ra
move v0, a1
botch:
jal _C_LABEL(longjmperror)
nop
jal _C_LABEL(abort)
nop
END(_longjmp)