/*      $OpenBSD: sigsetjmp.S,v 1.4 2022/12/08 02:11:27 guenther Exp $  */
/*      $NetBSD: sigsetjmp.S,v 1.9 2006/01/05 19:21:37 uwe Exp $        */

/*-
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * William Jolitz.
 *
 * 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. 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.
 *
 *      from: @(#)setjmp.s      5.1 (Berkeley) 4/23/90
 */

#include "SYS.h"

#include <machine/setjmp.h>

ENTRY(sigsetjmp)
        tst     r5,     r5              /* if (savemask == 0) */
        bt      2f

        /* identical to setjmp */
        PIC_PROLOGUE(.L_got_1)
        sts.l   pr,     @-sp
        mov.l   r4,     @-sp
        mov.l   r5,     @-sp

        mov.l   .L_sigprocmask_1, r0
        mov     r4,     r6
        mov     #1,     r4              /* how = SIG_BLOCK */
        mov     #0,     r5              /* new = NULL */
1:      CALL    r0
         add    #4,     r6              /* old = &sigmask */

        mov.l   @sp+,   r5
        mov.l   @sp+,   r4
        lds.l   @sp+,   pr
        PIC_EPILOGUE

2:      /* identical to _setjmp except that first word is in r5 */
#if defined(__SH4__) && !defined(__SH4_NOFPU__)
        add     #(_JBLEN * 4), r4
        sts     fpscr,  r1
        xor     r0,     r0
        mov.l   r1,     @-r4
        lds     r0,     fpscr
        sts.l   fpul,   @-r4
        fmov.s  fr15,   @-r4
        fmov.s  fr14,   @-r4
        fmov.s  fr13,   @-r4
        fmov.s  fr12,   @-r4
        frchg
        fmov.s  fr15,   @-r4
        fmov.s  fr14,   @-r4
        fmov.s  fr13,   @-r4
        fmov.s  fr12,   @-r4
        lds     r1,     fpscr
#else
        add     #((_JBLEN - 10) * 4), r4
#endif
        sts.l   mach,   @-r4
        sts.l   macl,   @-r4
        mov.l   r15,    @-r4
        mov.l   r14,    @-r4
        mov.l   r13,    @-r4
        mov.l   r12,    @-r4
        mov.l   r11,    @-r4
        mov.l   r10,    @-r4
        mov.l   r9,     @-r4
        mov.l   r8,     @-r4
        sts.l   pr,     @-r4
        add     #-4,    r4              /* skip signal mask */
        mov.l   r5,     @-r4            /* has signal mask? */
        rts
         xor    r0,     r0

        .align  2
.L_got_1:               PIC_GOT_DATUM
.L_sigprocmask_1:       CALL_DATUM(_HIDDEN(sigprocmask), 1b)
        SET_ENTRY_SIZE(sigsetjmp)

ENTRY(siglongjmp)
        mov.l   @r4+,   r0
        tst     r0,     r0
        bt      2f                      /* if no mask */

        /* identical to longjmp */
        /* we won't return here, so we don't need to save pr and r12 */
        PIC_PROLOGUE_NOSAVE(.L_got_2)
        mov.l   r5,     @-sp
        mov.l   r4,     @-sp

        mov.l   .L_sigprocmask_2, r0
        mov     r4,     r5              /* new = &sigmask */
        mov     #3,     r4              /* how = SIG_SETMASK */
1:      CALL    r0
         mov    #0,     r6              /* old = NULL */

        mov.l   @sp+,   r4
        mov.l   @sp+,   r5

2:      /* identical to _longjmp */
        add     #4,     r4
        lds.l   @r4+,   pr
        mov.l   @r4+,   r8
        mov.l   @r4+,   r9
        mov.l   @r4+,   r10
        mov.l   @r4+,   r11
        mov.l   @r4+,   r12
        mov.l   @r4+,   r13
        mov.l   @r4+,   r14
        mov.l   @r4+,   r15
        lds.l   @r4+,   macl
        lds.l   @r4+,   mach
#if defined(__SH4__) && !defined(__SH4_NOFPU__)
        xor     r0,     r0
        lds     r0,     fpscr
        frchg
        fmov.s  @r4+,   fr12
        fmov.s  @r4+,   fr13
        fmov.s  @r4+,   fr14
        fmov.s  @r4+,   fr15
        frchg
        fmov.s  @r4+,   fr12
        fmov.s  @r4+,   fr13
        fmov.s  @r4+,   fr14
        fmov.s  @r4+,   fr15
        lds.l   @r4+,   fpul
        lds.l   @r4+,   fpscr
#endif

        mov     r5,     r0
        tst     r0,     r0      /* make sure return value is non-zero */
        bf      .L0
        add     #1,     r0
.L0:
        rts
         nop

        .align  2
.L_got_2:               PIC_GOT_DATUM
.L_sigprocmask_2:       CALL_DATUM(_HIDDEN(sigprocmask), 1b)
        SET_ENTRY_SIZE(siglongjmp)