diff options
Diffstat (limited to 'MdePkg/Library/BaseLib/LoongArch64/GetInterruptState.S')
| -rw-r--r-- | MdePkg/Library/BaseLib/LoongArch64/GetInterruptState.S | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/LoongArch64/GetInterruptState.S b/MdePkg/Library/BaseLib/LoongArch64/GetInterruptState.S new file mode 100644 index 000000000000..63a9467f50c3 --- /dev/null +++ b/MdePkg/Library/BaseLib/LoongArch64/GetInterruptState.S @@ -0,0 +1,35 @@ +#------------------------------------------------------------------------------ +# +# Get LoongArch interrupt status +# +# Copyright (c) 2022, Loongson Technology Corporation Limited. All rights reserved.<BR> +# +# SPDX-License-Identifier: BSD-2-Clause-Patent +# +#------------------------------------------------------------------------------ + +ASM_GLOBAL ASM_PFX(GetInterruptState) + +#/** +# Retrieves the current CPU interrupt state. +# +# Returns TRUE means interrupts are currently enabled. Otherwise, +# returns FALSE. +# +# @retval TRUE CPU interrupts are enabled. +# @retval FALSE CPU interrupts are disabled. +# +#**/ + +ASM_PFX(GetInterruptState): + li.w $t1, 0x4 + csrrd $t0, 0x0 + and $t0, $t0, $t1 + beqz $t0, 1f + li.w $a0, 0x1 + b 2f +1: + li.w $a0, 0x0 +2: + jirl $zero, $ra, 0 + .end |