ArmPkg/Library/CompilerIntrinsicsLib/Arm/uwrite.asm

   1 //------------------------------------------------------------------------------
   2 //
   3 // Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
   4 //
   5 // SPDX-License-Identifier: BSD-2-Clause-Patent
   6 //
   7 //------------------------------------------------------------------------------
   8
   9
  10
  11     INCLUDE AsmMacroExport.inc
  12
  13 ;
  14 ;UINT32
  15 ;EFIAPI
  16 ;__aeabi_uwrite4 (
  17 ;  IN UINT32 Data,
  18 ;  IN VOID   *Pointer
  19 ;  );
  20 ;
  21 ;
  22  RVCT_ASM_EXPORT __aeabi_uwrite4
  23     mov     r2, r0, lsr #8
  24     strb    r0, [r1]
  25     strb    r2, [r1, #1]
  26     mov     r2, r0, lsr #16
  27     strb    r2, [r1, #2]
  28     mov     r2, r0, lsr #24
  29     strb    r2, [r1, #3]
  30     bx      lr
  31
  32 ;
  33 ;UINT64
  34 ;EFIAPI
  35 ;__aeabi_uwrite8 (
  36 ;  IN UINT64 Data,    //r0-r1
  37 ;  IN VOID   *Pointer //r2
  38 ;  );
  39 ;
  40 ;
  41  RVCT_ASM_EXPORT __aeabi_uwrite8
  42     mov     r3, r0, lsr #8
  43     strb    r0, [r2]
  44     strb    r3, [r2, #1]
  45     mov     r3, r0, lsr #16
  46     strb    r3, [r2, #2]
  47     mov     r3, r0, lsr #24
  48     strb    r3, [r2, #3]
  49
  50     mov     r3, r1, lsr #8
  51     strb    r1, [r2, #4]
  52     strb    r3, [r2, #5]
  53     mov     r3, r1, lsr #16
  54     strb    r3, [r2, #6]
  55     mov     r3, r1, lsr #24
  56     strb    r3, [r2, #7]
  57     bx      lr
  58
  59     END
  60