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/lmod.s
+++ b/libsrc/runtime/lmod.s
@@ -1,6 +1,6 @@
 ;
 ; Ullrich von Bassewitz, 07.08.1998
-;
+; Christian Krueger, 11-Mar-2017, added 65SC02 optimization
 ; CC65 runtime: modulo operation for long signed ints
 ;

@@ -11,10 +11,17 @@
        .import         poplsargs, udiv32, negeax
        .importzp       sreg, ptr1, ptr2, tmp1, tmp3, tmp4

+        .macpack        cpu
+
 tosmod0ax:
+.if (.cpu .bitand ::CPU_ISET_65SC02)
+        stz     sreg
+        stz     sreg+1
+.else
        ldy     #$00
        sty     sreg
        sty     sreg+1
+.endif

 tosmodeax:                         
        jsr     poplsargs       ; Get arguments from stack, adjust sign