Cc: Abner Chang <abner.ch...@hpe.com> Cc: Michael D Kinney <michael.d.kin...@intel.com> Cc: Liming Gao <gaolim...@byosoft.com.cn> Cc: Zhiguang Liu <zhiguang....@intel.com> Cc: Leif Lindholm <l...@nuviainc.com> Signed-off-by: Daniel Schaefer <daniel.schae...@hpe.com> --- MdePkg/Library/BaseLib/BaseLib.inf | 1 + MdePkg/Library/BaseLib/RiscV64/MemoryFence.S | 33 ++++++++++++++++++++ 2 files changed, 34 insertions(+)
diff --git a/MdePkg/Library/BaseLib/BaseLib.inf b/MdePkg/Library/BaseLib/BaseLib.inf index b76f3af380ea..b7ab5f632366 100644 --- a/MdePkg/Library/BaseLib/BaseLib.inf +++ b/MdePkg/Library/BaseLib/BaseLib.inf @@ -399,6 +399,7 @@ RiscV64/DisableInterrupts.c RiscV64/EnableInterrupts.c RiscV64/CpuPause.c + RiscV64/MemoryFence.S | GCC RiscV64/RiscVSetJumpLongJump.S | GCC RiscV64/RiscVCpuBreakpoint.S | GCC RiscV64/RiscVCpuPause.S | GCC diff --git a/MdePkg/Library/BaseLib/RiscV64/MemoryFence.S b/MdePkg/Library/BaseLib/RiscV64/MemoryFence.S new file mode 100644 index 000000000000..283df9356a9a --- /dev/null +++ b/MdePkg/Library/BaseLib/RiscV64/MemoryFence.S @@ -0,0 +1,33 @@ +##------------------------------------------------------------------------------ +# +# MemoryFence() for RiscV64 + +# Copyright (c) 2021, Hewlett Packard Enterprise Development. All rights reserved. +# +# SPDX-License-Identifier: BSD-2-Clause-Patent +# +##------------------------------------------------------------------------------ + +.text +.p2align 2 + +ASM_GLOBAL ASM_PFX(MemoryFence) + + +#/** +# Used to serialize load and store operations. +# +# All loads and stores that proceed calls to this function are guaranteed to be +# globally visible when this function returns. +# +#**/ +#VOID +#EFIAPI +#MemoryFence ( +# VOID +# ); +# +ASM_PFX(MemoryFence): + // Fence on all memory and I/O + fence + ret -- 2.30.1 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#75139): https://edk2.groups.io/g/devel/message/75139 Mute This Topic: https://groups.io/mt/82851071/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
