ArmPkg/Library/CompilerIntrinsicsLib/Arm/uwrite.asm

   1 //------------------------------------------------------------------------------
   2 //
   3 // Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
   4 //
   5 // This program and the accompanying materials
   6 // are licensed and made available under the terms and conditions of the BSD License
   7 // which accompanies this distribution.  The full text of the license may be found at
   8 // http://opensource.org/licenses/bsd-license.php
   9 //
  10 // THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 // WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12 //
  13 //------------------------------------------------------------------------------
  14
  15
  16
  17     INCLUDE AsmMacroExport.inc
  18
  19 ;
  20 ;UINT32
  21 ;EFIAPI
  22 ;__aeabi_uwrite4 (
  23 ;  IN UINT32 Data,
  24 ;  IN VOID   *Pointer
  25 ;  );
  26 ;
  27 ;
  28  RVCT_ASM_EXPORT __aeabi_uwrite4
  29     mov     r2, r0, lsr #8
  30     strb    r0, [r1]
  31     strb    r2, [r1, #1]
  32     mov     r2, r0, lsr #16
  33     strb    r2, [r1, #2]
  34     mov     r2, r0, lsr #24
  35     strb    r2, [r1, #3]
  36     bx      lr
  37
  38 ;
  39 ;UINT64
  40 ;EFIAPI
  41 ;__aeabi_uwrite8 (
  42 ;  IN UINT64 Data,    //r0-r1
  43 ;  IN VOID   *Pointer //r2
  44 ;  );
  45 ;
  46 ;
  47  RVCT_ASM_EXPORT __aeabi_uwrite8
  48     mov     r3, r0, lsr #8
  49     strb    r0, [r2]
  50     strb    r3, [r2, #1]
  51     mov     r3, r0, lsr #16
  52     strb    r3, [r2, #2]
  53     mov     r3, r0, lsr #24
  54     strb    r3, [r2, #3]
  55
  56     mov     r3, r1, lsr #8
  57     strb    r1, [r2, #4]
  58     strb    r3, [r2, #5]
  59     mov     r3, r1, lsr #16
  60     strb    r3, [r2, #6]
  61     mov     r3, r1, lsr #24
  62     strb    r3, [r2, #7]
  63     bx      lr
  64
  65     END
  66