/*      $NetBSD: atomic_cas_up.S,v 1.6 2026/01/08 15:54:45 skrll Exp $  */

/*-
 * Copyright (c) 2008, 2014 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Nick Hudson
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
 */

#include <sys/ras.h>
#include <machine/asm.h>

LEAF_ENTRY_NOPROFILE(_atomic_cas_up)
        .hidden _C_LABEL(_atomic_cas_up)

RAS_START_ASM_HIDDEN(_atomic_cas)
        ldw     0(%arg0), %ret0
        comb,<>,n       %arg1, %ret0, 1f
        stw     %arg2, 0(%arg0)
RAS_END_ASM_HIDDEN(_atomic_cas)
1:
        bv,n    %r0(%rp)
EXIT(_atomic_cas_up)

#if defined(__HAVE_ASM_ATOMIC_CAS_64_UP)
ENTRY_NOPROFILE(_atomic_cas_64_up, HPPA_FRAME_SIZE)
        .hidden _C_LABEL(_atomic_cas_64_up)

        ldo     HPPA_FRAME_ARG(5)(%sp), %arg1
        flddx   0(%arg1), %fr23                 // load new

RAS_START_ASM_HIDDEN(_atomic_cas_64)
        fldd    0(%arg0), %fr22                 // load *ptr
        fstd    %fr22,-16(%sp)                  // store to tmp

        ldw     -16(%sp),%ret0                  // load to ret0
        ldw     -12(%sp),%ret1                  // ... and ret1

        comb,<>,n       %arg3, %ret0, 1f
        comb,<>,n       %arg2, %ret1, 1f

        fstd     %fr23, 0(%arg0)                // *ptr = new
RAS_END_ASM_HIDDEN(_atomic_cas_64)
1:
        bv,n    %r0(%rp)
EXIT(_atomic_cas_64_up)
#endif /* __HAVE_ASM_ATOMIC_64_UP */

LEAF_ENTRY_NOPROFILE(_atomic_cas_16_up)
        .hidden _C_LABEL(_atomic_cas_16_up)

RAS_START_ASM_HIDDEN(_atomic_cas_16)
        ldh     0(%arg0),%ret0
        comb,<>,n       %arg1, %ret0, 1f
        sth     %arg2, 0(%arg0)
RAS_END_ASM_HIDDEN(_atomic_cas_16)
1:
        bv,n    %r0(%rp)
EXIT(_atomic_cas_16_up)

LEAF_ENTRY_NOPROFILE(_atomic_cas_8_up)
        .hidden _C_LABEL(_atomic_cas_8_up)

RAS_START_ASM_HIDDEN(_atomic_cas_8)
        ldb     0(%arg0),%ret0
        comb,<>,n       %arg1, %ret0, 1f
        stb     %arg2, 0(%arg0)
RAS_END_ASM_HIDDEN(_atomic_cas_8)
1:
        bv,n    %r0(%rp)
EXIT(_atomic_cas_8_up)