[haiku-commits] haiku: hrev44284 - src/system/kernel/arch/x86
- From: anevilyak@xxxxxxxxx
- To: haiku-commits@xxxxxxxxxxxxx
- Date: Tue, 3 Jul 2012 01:42:44 +0200 (CEST)
hrev44284 adds 1 changeset to branch 'master'
old head: dc5a16bb70c95c64b1203682acf5a67e19b2b882
new head: 29291c8c924ada62bf015aaf70d04616cc2e7314
----------------------------------------------------------------------------
29291c8: Cleanups/optimizations.
[ Rene Gollent <anevilyak@xxxxxxxxx> ]
----------------------------------------------------------------------------
Revision: hrev44284
Commit: 29291c8c924ada62bf015aaf70d04616cc2e7314
URL: http://cgit.haiku-os.org/haiku/commit/?id=29291c8
Author: Rene Gollent <anevilyak@xxxxxxxxx>
Date: Mon Jul 2 23:42:20 2012 UTC
----------------------------------------------------------------------------
1 file changed, 6 insertions(+), 13 deletions(-)
src/system/kernel/arch/x86/arch_x86.S | 19 ++++++-------------
----------------------------------------------------------------------------
diff --git a/src/system/kernel/arch/x86/arch_x86.S
b/src/system/kernel/arch/x86/arch_x86.S
index f731299..d5c5150 100644
--- a/src/system/kernel/arch/x86/arch_x86.S
+++ b/src/system/kernel/arch/x86/arch_x86.S
@@ -278,9 +278,8 @@ FUNCTION(arch_cpu_user_strlcpy):
/* If count is now 0, skip straight to null terminating
as our loop will otherwise overflow */
- cmp $0,%ecx
- jne .L_user_strlcpy_copy_begin
- movb $0,(%edi)
+ jnz .L_user_strlcpy_copy_begin
+ movb $0,(%edi)
jmp .L_user_strlcpy_source_count
.L_user_strlcpy_copy_begin:
@@ -289,30 +288,24 @@ FUNCTION(arch_cpu_user_strlcpy):
/* move data by bytes */
movsb
cmpb $0,-1(%esi)
- je .L_user_strlcpy_copy_loop_done
+ je .L_user_strlcpy_source_done
loop .L_user_strlcpy_copy_loop
-.L_user_strlcpy_copy_loop_done:
- /* check if we copied the entire source string */
- cmp $0,%ecx
- jne .L_user_strlcpy_source_done
-
-.L_user_strlcpy_zero_terminate:
/* null terminate string */
movb $0,(%edi)
- dec %esi
+ dec %esi
/* count remaining bytes in src */
.L_user_strlcpy_source_count:
not %ecx
- movb $0,%al
+ xor %al,%al
repnz
scasb
.L_user_strlcpy_source_done:
movl %esi,%eax
subl 20(%esp),%eax
- subl $1,%eax
+ dec %eax
/* restore the old fault handler */
movl %ebx,(%edx)
Other related posts:
- » [haiku-commits] haiku: hrev44284 - src/system/kernel/arch/x86 - anevilyak
