few 6502 and some 65SC02 optimizations

2017-03-12 23:21:43 +01:00
parent 0ec4534bd6
commit 0de44517ac
23 changed files with 272 additions and 78 deletions
--- a/libsrc/runtime/lumod.s
+++ b/libsrc/runtime/lumod.s
@@ -1,5 +1,6 @@
 ;
 ; Ullrich von Bassewitz, 27.09.1998
+; Christian Krueger, 11-Mar-2017, added 65SC02 optimization
 ;
 ; CC65 runtime: modulo operation for long unsigned ints
 ;
@@ -8,10 +9,17 @@
        .import         getlop, udiv32
        .importzp       sreg, tmp3, tmp4, ptr2

+        .macpack        cpu
+
 tosumod0ax:                          
+.if (.cpu .bitand ::CPU_ISET_65SC02)
+        stz     sreg
+        stz     sreg+1
+.else
        ldy     #$00
        sty     sreg
        sty     sreg+1
+.endif

 tosumodeax:
        jsr     getlop          ; Get the paramameters