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Annotation of kernel/machdep/ppc/mcount.s, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: /* Copyright 1997 Apple Computer, Inc.
        !            26:  *
        !            27:  * History :
        !            28:  * 18-Sep-1997  Umesh Vaishampayan ([email protected])
        !            29:  *     Created.
        !            30:  *
        !            31:  */
        !            32: 
        !            33: #if defined(GPROF)
        !            34: 
        !            35: /*
        !            36:  * The compiler generates calls to this function and passes address
        !            37:  * of caller of the function [ from which mcount is called ] as the 
        !            38:  * first parameter.
        !            39:  */
        !            40: 
        !            41:         .text
        !            42:                .align 4
        !            43:                .globl mcount
        !            44: mcount:
        !            45:         mflr r0
        !            46:         stw r0,8(r1)
        !            47:         stwu r1,-64(r1)
        !            48:         mr r4, r0
        !            49:         bl     _mcount                 ; Call the C routine
        !            50:         addi r1,r1,64
        !            51:         lwz r0,8(r1)
        !            52:         mtlr r0
        !            53:         blr
        !            54: 
        !            55: #endif /* GPROF */
        !            56: 

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