diff options
| -rw-r--r-- | ArmPkg/Library/ArmLib/AArch64/AArch64Support.S | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/ArmPkg/Library/ArmLib/AArch64/AArch64Support.S b/ArmPkg/Library/ArmLib/AArch64/AArch64Support.S index 66c310bb31..211457bd75 100644 --- a/ArmPkg/Library/ArmLib/AArch64/AArch64Support.S +++ b/ArmPkg/Library/ArmLib/AArch64/AArch64Support.S @@ -45,6 +45,7 @@ GCC_ASM_EXPORT (ArmDataMemoryBarrier) GCC_ASM_EXPORT (ArmDataSyncronizationBarrier)
GCC_ASM_EXPORT (ArmInstructionSynchronizationBarrier)
GCC_ASM_EXPORT (ArmWriteVBar)
+GCC_ASM_EXPORT (ArmReadVBar)
GCC_ASM_EXPORT (ArmVFPImplemented)
GCC_ASM_EXPORT (ArmEnableVFP)
GCC_ASM_EXPORT (ArmCallWFI)
@@ -411,6 +412,16 @@ ASM_PFX(ArmWriteVBar): 4: isb
ret
+ASM_PFX(ArmReadVBar):
+ EL1_OR_EL2_OR_EL3(x1)
+1: mrs x0, vbar_el1 // Set the Address of the EL1 Vector Table in the VBAR register
+ ret
+2: mrs x0, vbar_el2 // Set the Address of the EL2 Vector Table in the VBAR register
+ ret
+3: mrs x0, vbar_el3 // Set the Address of the EL3 Vector Table in the VBAR register
+ ret
+
+
ASM_PFX(ArmEnableVFP):
// Check whether floating-point is implemented in the processor.
mov x1, x30 // Save LR
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