Changeset 60984 in vbox for trunk/src/VBox/Runtime/common/string

Timestamp:

May 14, 2016 11:23:21 AM (9 years ago)

Author:

vboxsync

Message:

bzero.asm: simplifications.

File:

• trunk/src/VBox/Runtime/common/string/bzero.asm (modified) (6 diffs)

trunk/src/VBox/Runtime/common/string/bzero.asm

@@ -42 +42 @@
         mov     r9, rdi                 ; save rdi in r9
         mov     rdi, rcx
-        cmp     rdx, 32
-        jb      .dobytes
 
         ; todo: alignment?
@@ -51 +49 @@
 
         and     rdx, 7
-.dobytes:
         mov     rcx, rdx
         rep stosb
@@ -58 +55 @@
 
  %else ; GCC
-        cmp     rsi, 32
-        jb      .dobytes
-
         ; todo: alignment?
         mov     rcx, rsi
@@ -67 +61 @@
 
         and     rsi, 7
-.dobytes:
         mov     rcx, rsi
         rep stosb
@@ -78 +71 @@
         push    edi
 
-        xor     eax, eax
         mov     ecx, [ebp + 0ch]
         mov     edi, [ebp + 08h]
-        cmp     ecx, 12
-        jb      .dobytes
+        xor     eax, eax
 
         mov     edx, ecx
@@ -90 +81 @@
         and     edx, 3
         mov     ecx, edx
-.dobytes:
         rep stosb