diff options
Diffstat (limited to 'MdePkg/Library/BaseLib/AArch64/GetInterruptsState.S')
| -rw-r--r-- | MdePkg/Library/BaseLib/AArch64/GetInterruptsState.S | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/MdePkg/Library/BaseLib/AArch64/GetInterruptsState.S b/MdePkg/Library/BaseLib/AArch64/GetInterruptsState.S index 037f59acef..771299d1d4 100644 --- a/MdePkg/Library/BaseLib/AArch64/GetInterruptsState.S +++ b/MdePkg/Library/BaseLib/AArch64/GetInterruptsState.S @@ -19,6 +19,8 @@ .p2align 2
GCC_ASM_EXPORT(GetInterruptState)
+.set DAIF_RD_IRQ_BIT, (1 << 7)
+
#/**
# Retrieves the current CPU interrupt state.
#
@@ -38,8 +40,6 @@ GCC_ASM_EXPORT(GetInterruptState) #
ASM_PFX(GetInterruptState):
mrs x0, daif
- tst x0, #2 // Check if IRQ is enabled. Enabled if 0.
- mov w0, #0
- mov w1, #1
- csel w0, w1, w0, ne
+ tst x0, #DAIF_RD_IRQ_BIT // Check IRQ mask; set Z=1 if clear/unmasked
+ cset w0, eq // if Z=1 (eq) return 1, else 0
ret
|