Another small improvement

git-svn-id: svn://svn.cc65.org/cc65/trunk@2145 b7a2c559-68d2-44c3-8de9-860c34a00d81

diff --git a/libsrc/common/strncpy.s b/libsrc/common/strncpy.s
index a94b52e4a15bdf62104d2d73d498e45cb62ac9bd..3ba03301b1f792d59df5301dcbe9a1ef4d97bbab 100644 (file)
--- a/libsrc/common/strncpy.s
+++ b/libsrc/common/strncpy.s
@@ -6,7 +6,7 @@
 
        .export         _strncpy
        .import         popax
-       .importzp       ptr1, ptr2, ptr3, tmp1, tmp2
+       .importzp       ptr1, ptr2, tmp1, tmp2, tmp3
 
 .proc   _strncpy
 
@@ -15,14 +15,14 @@
         txa
         eor     #$FF
         sta     tmp2            ; Store -size - 1
+
                jsr     popax           ; get src
        sta     ptr1
        stx     ptr1+1
        jsr     popax           ; get dest
        sta     ptr2
        stx     ptr2+1
-       sta     ptr3            ; remember for function return
-       stx     ptr3+1
+               stx     tmp3            ; remember for function return
 
 ; Copy src -> dest up to size bytes
 
@@ -41,7 +41,7 @@ L2:     lda     (ptr1),y        ; Copy one character
         inc     ptr1+1
         inc     ptr2+1          ; Bump high bytes
         bne     L1              ; Branch always
-                   
+
 ; Fill the remaining bytes. A is zero if we come here
 
 L3:     inx
@@ -57,8 +57,8 @@ L4:     sta     (ptr2),y
 
 ; Done, return dest
 
-L9:     lda     ptr3
-        ldx     ptr3+1
+L9:     lda     ptr2            ; Get low byte
+        ldx     tmp3            ; Get unchanged high byte
         rts
 
 .endproc