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MdePkg/BaseCpuLib AARCH64: Make asm files BTI compatible 

Add the BTI instructions and the associated note to make the AArch64 asm
objects compatible with BTI enforcement.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com>
Reviewed-by: Oliver Smith-Denny <osd@smith-denny.com>
This commit is contained in:
Ard Biesheuvel 2023-03-25 17:34:58 +01:00 committed by mergify[bot]
parent 6521e4d202
commit c5cd360277
2 changed files with 2 additions and 0 deletions
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1
MdePkg/Library/BaseCpuLib/AArch64/CpuFlushTlb.S
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@ -26,6 +26,7 @@ GCC_ASM_EXPORT(CpuFlushTlb)
# )# # )#
# #
ASM_PFX(CpuFlushTlb): ASM_PFX(CpuFlushTlb):
AARCH64_BTI(c)
tlbi vmalle1 // Invalidate Inst TLB and Data TLB tlbi vmalle1 // Invalidate Inst TLB and Data TLB
dsb sy dsb sy
isb isb

1
MdePkg/Library/BaseCpuLib/AArch64/CpuSleep.S
View File

@ -29,5 +29,6 @@ GCC_ASM_EXPORT(CpuSleep)
# #
ASM_PFX(CpuSleep): ASM_PFX(CpuSleep):
AARCH64_BTI(c)
wfi wfi
ret ret