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   EXPORT  ArmPlatformGetPrimaryCoreMpId
  22
  23   IMPORT  _gPcd_FixedAtBuild_PcdArmPrimaryCore
  24   IMPORT  _gPcd_FixedAtBuild_PcdArmPrimaryCoreMask
  25
  26   AREA CTA9x4Helper, CODE, READONLY
  27
  28 //UINTN
  29 //ArmPlatformGetPrimaryCoreMpId (
  30 //  VOID
  31 //  );
  32 ArmPlatformGetPrimaryCoreMpId FUNCTION
  33   LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask, r0)
  34   ldr     r0, [r0]
  35   bx      lr
  36   ENDFUNC
  37
  38 //UINTN
  39 //ArmPlatformIsPrimaryCore (
  40 //  IN UINTN MpId
  41 //  );
  42 ArmPlatformIsPrimaryCore FUNCTION
  43   LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask, r1)
  44   ldr   r1, [r1]
  45   and   r0, r0, r1
  46   LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCore, r1)
  47   ldr   r1, [r1]
  48   cmp   r0, r1
  49   moveq r0, #1
  50   movne r0, #0
  51   bx    lr
  52   ENDFUNC
  53
  54   END