projects
/
bootcensus
/ blobdiff
commit
grep
author
committer
pickaxe
?
search:
re
summary
|
shortlog
|
log
|
commit
|
commitdiff
|
tree
raw
|
inline
| side by side
comments
[bootcensus]
/
src
/
libc
/
string_asm.s
diff --git
a/src/libc/string_asm.s
b/src/libc/string_asm.s
index
7bb6f40
..
ce9b19a
100644
(file)
--- a/
src/libc/string_asm.s
+++ b/
src/libc/string_asm.s
@@
-34,6
+34,7
@@
memset:
mov %edi, %edx
and $3, %edx
mov %edi, %edx
and $3, %edx
+ jz msmain
jmp *mspre_tab(,%edx,4)
mspre_tab: .long msmain, mspre1, mspre2, mspre3
jmp *mspre_tab(,%edx,4)
mspre_tab: .long msmain, mspre1, mspre2, mspre3
@@
-84,6
+85,7
@@
memset16:
mov %edi, %edx
and $3, %edx
mov %edi, %edx
and $3, %edx
+ jz ms16main
jmp *ms16pre_tab(,%edx,4)
ms16pre_tab: .long ms16main, ms16pre1, ms16pre2, ms16pre3
jmp *ms16pre_tab(,%edx,4)
ms16pre_tab: .long ms16main, ms16pre1, ms16pre2, ms16pre3
@@
-145,27
+147,12
@@
memcpy:
cmp $0, %ecx
jz mcdone
cmp $0, %ecx
jz mcdone
- mov %edi, %edx
- and $3, %edx
- jmp *mcpre_tab(,%edx,4)
-
-mcpre_tab: .long mcmain, mcpre1, mcpre2, mcpre3
-mcpre1: movsw
- dec %ecx
-mcpre2: movsw
- dec %ecx
-mcpre3: movsw
- dec %ecx
- jz mcdone
-
-mcmain:
- push %ecx
+ mov %ecx, %edx
shr $2, %ecx
rep movsl
shr $2, %ecx
rep movsl
- pop %ecx
- and $3, %ecx
- jmp *mcpost_tab(,%ecx,4)
+ and $3, %edx
+ jmp *mcpost_tab(,%edx,4)
mcpost_tab: .long mcdone, mcpost1, mcpost2, mcpost3
mcpost3:movsb
mcpost_tab: .long mcdone, mcpost1, mcpost2, mcpost3
mcpost3:movsb