1. Updated function headers for all assembly function
2. Optimized register usage in SetMemXX functions in all lib instances 3. Fixed a logical error in CopyMem for all lib instances git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1139 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
@@ -23,23 +23,29 @@
|
||||
|
||||
.code
|
||||
|
||||
InternalMemSetMem32 PROC USES rdi
|
||||
DB 49h, 0fh, 6eh, 0c0h ; movq mm0, r8 ; mm0 <- Value
|
||||
mov rax, rcx ; rax <- Buffer
|
||||
mov rdi, rax
|
||||
mov rcx, rdx
|
||||
shr rcx, 1
|
||||
;------------------------------------------------------------------------------
|
||||
; VOID *
|
||||
; InternalMemSetMem32 (
|
||||
; IN VOID *Buffer,
|
||||
; IN UINTN Count,
|
||||
; IN UINT32 Value
|
||||
; )
|
||||
;------------------------------------------------------------------------------
|
||||
InternalMemSetMem32 PROC
|
||||
DB 49h, 0fh, 6eh, 0c0h ; movd mm0, r8 (Value)
|
||||
mov rax, rcx ; rax <- Buffer
|
||||
xchg rcx, rdx ; rcx <- Count rdx <- Buffer
|
||||
shr rcx, 1 ; rcx <- # of qwords to set
|
||||
jz @SetDwords
|
||||
DB 0fh, 70h, 0C0h, 44h ; pshufw mm0, mm0, 44h
|
||||
DB 0fh, 70h, 0C0h, 44h ; pshufw mm0, mm0, 44h
|
||||
@@:
|
||||
DB 48h, 0fh, 0e7h, 07h ; movntq [rdi], mm0
|
||||
add rdi, 8
|
||||
DB 0fh, 0e7h, 02h ; movntq [rdx], mm0
|
||||
lea rdx, [rdx + 8] ; use "lea" to avoid flag changes
|
||||
loop @B
|
||||
mfence
|
||||
@SetDwords:
|
||||
test dl, 1
|
||||
jz @F
|
||||
DB 0fh, 7eh, 07h ; movd [rdi], mm0
|
||||
jnc @F
|
||||
DB 0fh, 7eh, 02h ; movd [rdx], mm0
|
||||
@@:
|
||||
ret
|
||||
InternalMemSetMem32 ENDP
|
||||
|
Reference in New Issue
Block a user