libkern/c++/OSObjectAsm.s

   1 /*
   2  * Copyright (c) 2002 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25
  26 #if __GNUC__ >= 3
  27
  28 ;
  29 ; This function was generated by disassembling the 'OSObject::free(void)'
  30 ; function of the Panther7B7 kernel in gdb.
  31 ;
  32 ; Then add the 'li r4,3' flag taken fropm the Puma kernel OSObject::free'
  33 ;
  34     .text
  35
  36     .align  5
  37     .globl  __ZN8OSObject4freeEv
  38
  39 __ZN8OSObject4freeEv:
  40     ; function prologue
  41     stw     r31,-4(r1)
  42     mflr    r0
  43     stw     r0,8(r1)
  44     mr      r31,r3
  45     stwu    r1,-80(r1)
  46
  47     ; const OSMetaClass *meta = getMetaClass();
  48     lwz     r9,0(r3)
  49     lwz     r12,32(r9)
  50     mtctr   r12
  51     bctrl
  52
  53     ; if (meta)
  54     ;   meta->instanceDestructed();
  55     cmpwi   r3,0
  56     beq     delete_this
  57     bl      __ZNK11OSMetaClass18instanceDestructedEv
  58
  59 delete_this:
  60     ; delete this;
  61     lwz     r9,0(r31)
  62     mr      r3,r31
  63     li      r4,0        ; Load up some sort of flags, for 2.95 destructors?
  64     lwz     r0,88(r1)
  65     addi    r1,r1,80
  66     lwz     r12,8(r9)
  67     mtlr    r0
  68     lwz     r31,-4(r1)
  69     mtctr   r12
  70     bctr
  71
  72 #endif /* __GNUC__ >= 3 */