audk/ArmPkg/Library/ArmMmuLib/Arm/ArmMmuLibV7Support.S

#------------------------------------------------------------------------------
#
# Copyright (c) 2016, Linaro Limited. All rights reserved.
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
#------------------------------------------------------------------------------

#include <AsmMacroIoLib.h>

.text
.align 2

GCC_ASM_EXPORT (ArmReadIdMmfr0)
GCC_ASM_EXPORT (ArmHasMpExtensions)

#------------------------------------------------------------------------------

ASM_PFX (ArmHasMpExtensions):
  mrc     p15,0,R0,c0,c0,5
  // Get Multiprocessing extension (bit31)
  lsr     R0, R0, #31
  bx      LR

ASM_PFX(ArmReadIdMmfr0):
  mrc    p15, 0, r0, c0, c1, 4     @ Read ID_MMFR0 Register
  bx     lr

ASM_FUNCTION_REMOVE_IF_UNREFERENCED