sravan/system76-edk2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

MdePkg/BaseMemoryLibOptDxe AARCH64: Make asm files BTI compatible

Browse Source 
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 17:37:30 +01:00
committed by mergify[bot]
parent c4c7fb2174
commit 0ee255f50a
5 changed files with 9 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
MdePkg/Library/BaseMemoryLibOptDxe/AArch64/SetMem.S
View File

@@ -29,29 +29,34 @@
ASM_GLOBAL ASM_PFX(InternalMemSetMem16)
ASM_PFX(InternalMemSetMem16):
AARCH64_BTI(c)
dup v0.8H, valw
lsl count, count, #1
b 0f
ASM_GLOBAL ASM_PFX(InternalMemSetMem32)
ASM_PFX(InternalMemSetMem32):
AARCH64_BTI(c)
dup v0.4S, valw
lsl count, count, #2
b 0f
ASM_GLOBAL ASM_PFX(InternalMemSetMem64)
ASM_PFX(InternalMemSetMem64):
AARCH64_BTI(c)
dup v0.2D, val
lsl count, count, #3
b 0f
ASM_GLOBAL ASM_PFX(InternalMemZeroMem)
ASM_PFX(InternalMemZeroMem):
AARCH64_BTI(c)
movi v0.16B, #0
b 0f
ASM_GLOBAL ASM_PFX(InternalMemSetMem)
ASM_PFX(InternalMemSetMem):
AARCH64_BTI(c)
dup v0.16B, valw
0: add dstend, dstin, count
mov val, v0.D[0]