118 lines
3.6 KiB
ArmAsm
118 lines
3.6 KiB
ArmAsm
/* $NetBSD: _setjmp.S,v 1.20 2005/10/07 17:16:40 tsutsui Exp $ */
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/*-
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Ralph Campbell.
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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. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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#include <machine/asm.h>
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__FBSDID("$FreeBSD$");
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#include <machine/regnum.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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ASMSTR("from: @(#)_setjmp.s 8.1 (Berkeley) 6/4/93")
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ASMSTR("$NetBSD: _setjmp.S,v 1.20 2005/10/07 17:16:40 tsutsui Exp $")
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#endif /* LIBC_SCCS and not lint */
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#ifdef __ABICALLS__
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.abicalls
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#endif
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/*
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* C library -- _setjmp, _longjmp
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*
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* _longjmp(a,v)
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* will generate a "return(v)" from
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* the last call to
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* _setjmp(a)
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* by restoring registers from the stack,
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* The previous signal state is NOT restored.
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*/
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LEAF(_setjmp)
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#ifdef __ABICALLS__
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.set noreorder
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.cpload t9
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subu sp, sp, CALLFRAME_SIZ # allocate stack frame
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.cprestore 16
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#endif
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li v0, _JB_MAGIC__SETJMP
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sw v0, (_JB_MAGIC * SZREG)(a0)
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sw ra, (_JB_REG_RA * SZREG)(a0)
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sw s0, (_JB_REG_S0 * SZREG)(a0)
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sw s1, (_JB_REG_S1 * SZREG)(a0)
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sw s2, (_JB_REG_S2 * SZREG)(a0)
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sw s3, (_JB_REG_S3 * SZREG)(a0)
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sw s4, (_JB_REG_S4 * SZREG)(a0)
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sw s5, (_JB_REG_S5 * SZREG)(a0)
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sw s6, (_JB_REG_S6 * SZREG)(a0)
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sw s7, (_JB_REG_S7 * SZREG)(a0)
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sw s8, (_JB_REG_S8 * SZREG)(a0)
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#ifdef __ABICALLS__
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addu sp, sp, CALLFRAME_SIZ # un-allocate the stack frame
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#endif
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sw sp, (_JB_REG_SP * SZREG)(a0)
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j ra
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move v0, zero
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END(_setjmp)
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LEAF(_longjmp)
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#ifdef __ABICALLS__
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.set noreorder
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.cpload t9
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subu sp, sp, CALLFRAME_SIZ # allocate stack frame
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.cprestore 16
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#endif
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lw v0, (_JB_MAGIC * SZREG)(a0)
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lw ra, (_JB_REG_RA * SZREG)(a0)
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li t0, _JB_MAGIC__SETJMP
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bne v0, t0, botch # jump if error
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lw s0, (_JB_REG_S0 * SZREG)(a0)
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lw s1, (_JB_REG_S1 * SZREG)(a0)
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lw s2, (_JB_REG_S2 * SZREG)(a0)
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lw s3, (_JB_REG_S3 * SZREG)(a0)
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lw s4, (_JB_REG_S4 * SZREG)(a0)
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lw s5, (_JB_REG_S5 * SZREG)(a0)
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lw s6, (_JB_REG_S6 * SZREG)(a0)
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lw s7, (_JB_REG_S7 * SZREG)(a0)
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lw sp, (_JB_REG_SP * SZREG)(a0)
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lw s8, (_JB_REG_S8 * SZREG)(a0)
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j ra
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move v0, a1
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botch:
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jal _C_LABEL(longjmperror)
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nop
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jal _C_LABEL(abort)
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nop
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END(_longjmp)
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