MdePkg/Library/BaseLib/RiscV64/MemoryFence.S

   1 //------------------------------------------------------------------------------
   2 //
   3 // MemoryFence() for RiscV64
   4 //
   5 // Copyright (c) 2021, Hewlett Packard Enterprise Development. All rights reserved.
   6 //
   7 // SPDX-License-Identifier: BSD-2-Clause-Patent
   8 //
   9 //------------------------------------------------------------------------------
  10
  11 .text
  12 .p2align 2
  13
  14 ASM_GLOBAL ASM_PFX(MemoryFence)
  15
  16 //
  17 // Memory fence for RiscV64
  18 //
  19 //
  20 ASM_PFX(MemoryFence):
  21     fence  // Fence on all memory and I/O
  22     ret