131 lines
3.6 KiB
ArmAsm
131 lines
3.6 KiB
ArmAsm
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/* $NetBSD: setjmp.S,v 1.10 2006/01/05 19:21:37 uwe Exp $ */
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/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* 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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* William Jolitz.
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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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* from: @(#)setjmp.s 5.1 (Berkeley) 4/23/90
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*/
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#include <machine/asm.h>
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#include <machine/setjmp.h>
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#if defined(LIBC_SCCS)
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RCSID("$NetBSD: setjmp.S,v 1.10 2006/01/05 19:21:37 uwe Exp $")
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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 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 restored.
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*/
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ENTRY(__setjmp14)
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PIC_PROLOGUE(.L_got_1)
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sts.l pr, @-sp
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mov.l r4, @-sp
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mov.l .L___sigprocmask14_1, r0
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mov r4, r6
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mov #1, r4 /* how = SIG_BLOCK */
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mov #0, r5 /* new = NULL */
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1: CALL r0
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add #(_JB_SIGMASK * 4), r6 /* old = &sigmask */
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mov.l @sp+, r4
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lds.l @sp+, pr
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PIC_EPILOGUE
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/* identical to _setjmp except that _JB_HAS_MASK is non-zero */
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add #((_JB_HAS_MASK + 1) * 4), r4
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mov #1, r0
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mov.l r0, @-r4 /* has signal mask */
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mov.l r15, @-r4
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mov.l r14, @-r4
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mov.l r13, @-r4
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mov.l r12, @-r4
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mov.l r11, @-r4
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mov.l r10, @-r4
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mov.l r9, @-r4
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mov.l r8, @-r4
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sts.l pr, @-r4
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rts
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xor r0, r0
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.align 2
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.L_got_1: PIC_GOT_DATUM
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.L___sigprocmask14_1: CALL_DATUM(_C_LABEL(__sigprocmask14), 1b)
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SET_ENTRY_SIZE(__setjmp14)
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ENTRY(__longjmp14)
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/* we won't return here, so we don't need to save pr and r12 */
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PIC_PROLOGUE_NOSAVE(.L_got_2)
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mov.l r5, @-sp
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mov.l r4, @-sp
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mov.l .L___sigprocmask14_2, r0
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mov r4, r5
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mov #3, r4 /* how = SIG_SETMASK */
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add #(_JB_SIGMASK * 4), r5 /* new = &sigmask */
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1: CALL r0
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mov #0, r6 /* old = NULL */
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mov.l @sp+, r4
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mov.l @sp+, r5
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/* identical to _longjmp */
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lds.l @r4+, pr
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mov.l @r4+, r8
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mov.l @r4+, r9
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mov.l @r4+, r10
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mov.l @r4+, r11
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mov.l @r4+, r12
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mov.l @r4+, r13
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mov.l @r4+, r14
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mov.l @r4+, r15
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mov r5, r0
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tst r0, r0 /* make sure return value is non-zero */
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bf .L0
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add #1, r0
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.L0:
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rts
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nop
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.align 2
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.L_got_2: PIC_GOT_DATUM
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.L___sigprocmask14_2: CALL_DATUM(_C_LABEL(__sigprocmask14), 1b)
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SET_ENTRY_SIZE(__longjmp14)
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