libkern/c++/OSObjectAsm.s

   1 /*
   2  * Copyright (c) 2002 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28
  29 #if __GNUC__ >= 3
  30
  31 ;
  32 ; This function was generated by disassembling the 'OSObject::free(void)'
  33 ; function of the Panther7B7 kernel in gdb.
  34 ;
  35 ; Then add the 'li r4,3' flag taken fropm the Puma kernel 'OSObject::free'
  36 ;
  37     .text
  38
  39     .align  5
  40     .globl  __ZN8OSObject4freeEv
  41
  42 __ZN8OSObject4freeEv:
  43     ; function prologue
  44     stw     r31,-4(r1)
  45     mflr    r0
  46     stw     r0,8(r1)
  47     mr      r31,r3
  48     stwu    r1,-80(r1)
  49
  50     ; const OSMetaClass *meta = getMetaClass();
  51     lwz     r9,0(r3)
  52     lwz     r12,32(r9)
  53     mtctr   r12
  54     bctrl
  55
  56     ; if (meta)
  57     ;   meta->instanceDestructed();
  58     cmpwi   r3,0
  59     beq     delete_this
  60     bl      __ZNK11OSMetaClass18instanceDestructedEv
  61
  62 delete_this:
  63     ; delete this;
  64     lwz     r9,0(r31)
  65     mr      r3,r31
  66     li      r4,0        ; Load up some sort of flags, for 2.95 destructors?
  67     lwz     r0,88(r1)
  68     addi    r1,r1,80
  69     lwz     r12,8(r9)
  70     mtlr    r0
  71     lwz     r31,-4(r1)
  72     mtctr   r12
  73     bctr
  74
  75 #endif /* __GNUC__ >= 3 */