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Annotation of kernel/machdep/ppc/mcount.s, revision 1.1.1.1

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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