ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibCTA9x4/CTA9x4Helper.asm

   1 //
   2 //  Copyright (c) 2013, ARM Limited. All rights reserved.
   3 //
   4 //  This program and the accompanying materials
   5 //  are licensed and made available under the terms and conditions of the BSD License
   6 //  which accompanies this distribution.  The full text of the license may be found at
   7 //  http://opensource.org/licenses/bsd-license.php
   8 //
   9 //  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 //  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11 //
  12 //
  13
  14 #include <AsmMacroIoLib.h>
  15
  16 #include <AutoGen.h>
  17
  18   INCLUDE AsmMacroIoLib.inc
  19
  20   EXPORT  ArmPlatformIsPrimaryCore
  21
  22   IMPORT  _gPcd_FixedAtBuild_PcdArmPrimaryCore
  23   IMPORT  _gPcd_FixedAtBuild_PcdArmPrimaryCoreMask
  24
  25   AREA CTA9x4Helper, CODE, READONLY
  26
  27 //UINTN
  28 //ArmPlatformIsPrimaryCore (
  29 //  IN UINTN MpId
  30 //  );
  31 ArmPlatformIsPrimaryCore FUNCTION
  32   LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask, r1)
  33   ldr   r1, [r1]
  34   and   r0, r0, r1
  35   LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCore, r1)
  36   ldr   r1, [r1]
  37   cmp   r0, r1
  38   moveq r0, #1
  39   movne r0, #0
  40   bx    lr
  41   ENDFUNC
  42
  43   END