Changeset 75334 in vbox for trunk/src/VBox/Runtime/common/string/memcmp.asm

Timestamp:

Nov 9, 2018 1:21:05 AM (6 years ago)

Author:

vboxsync

Message:

iprt/memcmp.asm: Now with watcom calling convention option, we must not clear EAX before we've set up the registers for cmpsd/q.

File:

• trunk/src/VBox/Runtime/common/string/memcmp.asm (modified) (3 diffs)

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

@@ -35 +35 @@
 RT_NOCRT_BEGINPROC memcmp
         cld
-        xor     eax, eax
 
         ; Do the bulk of the work.
@@ -50 +49 @@
  %endif
         shr     rcx, 3
+        xor     eax, eax
         repe cmpsq
         jne     .not_equal_qword
@@ -69 +69 @@
         jecxz   .done
         shr     ecx, 2
+        xor     eax, eax
         repe cmpsd
         jne     .not_equal_dword