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Annotation of src/common/lib/libc/arch/alpha/atomic/atomic_add.S, Revision 1.3

1.3     ! martin      1: /*     $NetBSD: atomic_add.S,v 1.2 2007/11/28 17:39:06 ad Exp $        */
1.2       ad          2:
                      3: /*-
                      4:  * Copyright (c) 2007 The NetBSD Foundation, Inc.
                      5:  * All rights reserved.
                      6:  *
                      7:  * This code is derived from software contributed to The NetBSD Foundation
                      8:  * by Jason R. Thorpe.
                      9:  *
                     10:  * Redistribution and use in source and binary forms, with or without
                     11:  * modification, are permitted provided that the following conditions
                     12:  * are met:
                     13:  * 1. Redistributions of source code must retain the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer.
                     15:  * 2. Redistributions in binary form must reproduce the above copyright
                     16:  *    notice, this list of conditions and the following disclaimer in the
                     17:  *    documentation and/or other materials provided with the distribution.
                     18:  *
                     19:  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
                     20:  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
                     21:  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
                     22:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
                     23:  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
                     24:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
                     25:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
                     26:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
                     27:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
                     28:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
                     29:  * POSSIBILITY OF SUCH DAMAGE.
                     30:  */
                     31:
                     32: #include "atomic_op_asm.h"
                     33:
                     34:        .text
                     35:
                     36: LEAF_NOPROFILE(_atomic_add_32, 2)
                     37: 1:     ldl_l   t1, 0(a0)
                     38:        addl    t1, a1, t2
                     39:        stl_c   t2, 0(a0)
                     40:        beq     t2, 2f
                     41:        RET
                     42: 2:     br      1b
                     43:        END(_atomic_add_32)
                     44: ATOMIC_OP_ALIAS(atomic_add_32,_atomic_add_32)
                     45: ATOMIC_OP_ALIAS(atomic_add_int,_atomic_add_32)
                     46: STRONG_ALIAS(_atomic_add_int,_atomic_add_32)
                     47:
                     48: LEAF_NOPROFILE(_atomic_add_32_nv, 2)
                     49: 1:     ldl_l   t1, 0(a0)
                     50:        addl    t1, a1, t2
                     51:        mov     t2, v0
                     52:        stl_c   t2, 0(a0)
                     53:        beq     t2, 2f
                     54:        RET
                     55: 2:     br      1b
                     56:        END(_atomic_add_32_nv)
                     57: ATOMIC_OP_ALIAS(atomic_add_32_nv,_atomic_add_32_nv)
                     58: ATOMIC_OP_ALIAS(atomic_add_int_nv,_atomic_add_32_nv)
                     59: STRONG_ALIAS(_atomic_add_int_nv,_atomic_add_32_nv)
                     60:
                     61: LEAF_NOPROFILE(_atomic_add_64, 2)
                     62: 1:     ldq_l   t1, 0(a0)
                     63:        addq    t1, a1, t2
                     64:        stq_c   t2, 0(a0)
                     65:        beq     t2, 2f
                     66:        RET
                     67: 2:     br      1b
                     68:        END(_atomic_add_64)
                     69: ATOMIC_OP_ALIAS(atomic_add_64,_atomic_add_64)
                     70: ATOMIC_OP_ALIAS(atomic_add_long,_atomic_add_64)
                     71: STRONG_ALIAS(_atomic_add_long,_atomic_add_64)
                     72: ATOMIC_OP_ALIAS(atomic_add_ptr,_atomic_add_64)
                     73: STRONG_ALIAS(_atomic_add_ptr,_atomic_add_64)
                     74:
                     75: LEAF_NOPROFILE(_atomic_add_64_nv, 2)
                     76: 1:     ldq_l   t1, 0(a0)
                     77:        addq    t1, a1, t2
                     78:        mov     t2, v0
                     79:        stq_c   t2, 0(a0)
                     80:        beq     t2, 2f
                     81:        RET
                     82: 2:     br      1b
                     83:        END(_atomic_add_64_nv)
                     84: ATOMIC_OP_ALIAS(atomic_add_64_nv,_atomic_add_64_nv)
                     85: ATOMIC_OP_ALIAS(atomic_add_long_nv,_atomic_add_64_nv)
                     86: STRONG_ALIAS(_atomic_add_long_nv,_atomic_add_64_nv)
                     87: ATOMIC_OP_ALIAS(atomic_add_ptr_nv,_atomic_add_64_nv)
                     88: STRONG_ALIAS(_atomic_add_ptr_nv,_atomic_add_64_nv)

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