Changeset 96373 in vbox for trunk/src/VBox/Runtime/common/string

Timestamp:

Aug 20, 2022 3:08:08 AM (3 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

153190

Message:

IPRT/nocrt: Implemented wcslen. bugref:10261

File:

• trunk/src/VBox/Runtime/common/string/wcslen.asm (copied) (copied from trunk/src/VBox/Runtime/common/string/strlen.asm ) (2 diffs)

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

@@ -31 +31 @@
 ;;
 ; @param    psz     gcc: rdi  msc: rcx  x86: [esp+4]  wcall: eax
-RT_NOCRT_BEGINPROC strlen
+RT_NOCRT_BEGINPROC wcslen
         cld
 %ifdef RT_ARCH_AMD64
@@ -50 +50 @@
         mov     xCX, -1
         xor     eax, eax
-        repne   scasb
+        repne   scasw
 
         ; found it
         neg     xCX
         lea     xAX, [xCX - 2]
+        shr     xCX, 1
 %ifdef ASM_CALL64_MSC
         mov     rdi, r9
-%endif
-%ifdef RT_ARCH_X86
+%elifdef RT_ARCH_X86
         mov     edi, edx
 %endif
         ret
-ENDPROC RT_NOCRT(strlen)
+ENDPROC RT_NOCRT(wcslen)