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MdePkg/BaseLib: BaseLib for LOONGARCH64 architecture.

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REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4053

Add LoongArch LOONGARCH64 BaseLib functions.

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>

Signed-off-by: Chao Li <lichao@loongson.cn>
Co-authored-by: Baoqi Zhang <zhangbaoqi@loongson.cn>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
This commit is contained in:
Chao Li
2022-09-14 10:29:15 +08:00
committed by mergify[bot]
parent f0a704f9b5
commit cd24eb578b
12 changed files with 363 additions and 1 deletions
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31
MdePkg/Library/BaseLib/LoongArch64/CpuPause.S Normal file
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@@ -0,0 +1,31 @@
#------------------------------------------------------------------------------
#
# CpuPause for LoongArch
#
# Copyright (c) 2022, Loongson Technology Corporation Limited. All rights reserved.<BR>
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
#------------------------------------------------------------------------------
ASM_GLOBAL ASM_PFX(CpuPause)
#/**
# Requests CPU to pause for a short period of time.
#
# Requests CPU to pause for a short period of time. Typically used in MP
# systems to prevent memory starvation while waiting for a spin lock.
#
#**/
ASM_PFX(CpuPause):
nop
nop
nop
nop
nop
nop
nop
nop
jirl $zero, $ra, 0
.end