runtime/Auto.subproj/objc-auto-ppc.s

   1 /*
   2  * Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 2004 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
  27  ;
  28  ; This section includes declarations of routines that will be used to populate
  29  ; the runtime pages during auto initialization.  Each wb_routine definition
  30  ; creates an absolute branch into the rtp plus a non-gc version of code for
  31  ; non collecting apps.  Note - the blr is necessary at the end of the non-gc
  32  ; routine for code copying to behave correctly.
  33  ;
  34
  35 #undef  OBJC_ASM
  36 #define OBJC_ASM
  37 #include "objc-rtp.h"
  38
  39     .macro  wb_routine
  40     .globl  _$0                ; primary entry name
  41 ;   .abs    _abs_$0,kRTAddress_$0
  42 _$0:                           ; primary entry point
  43     ba      $1                 ; branch to runtime page
  44
  45     .globl  _$0_non_gc         ; non_gc entry point name
  46 _$0_non_gc:                    ; non_gc entry point
  47     .endmacro
  48
  49     .text
  50
  51 // note - unfortunately ba does not accept constant expressions
  52
  53     ; non-gc routines
  54
  55     ; id objc_assign_strongCast(id value, id *dest)
  56     wb_routine  objc_assign_strongCast,0xfffefea0
  57     stw         r3,0(r4)        ; store value at dest
  58     blr                         ; return
  59
  60     ; id objc_assign_global(id value, id *dest)
  61     wb_routine  objc_assign_global,0xfffefeb0
  62     stw         r3,0(r4)        ; store value at dest
  63     blr                         ; return
  64
  65     ; id objc_assign_ivar(id value, id dest, unsigned int offset)
  66     wb_routine  objc_assign_ivar,0xfffefec0
  67     stwx        r3,r4,r5        ; store value at (dest+offset)
  68     blr                         ; return
  69