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/lpop.s
+++ b/libsrc/runtime/lpop.s
@@ -1,5 +1,6 @@
 ;
 ; Ullrich von Bassewitz, 29.12.1999
+; Christian Krueger, 11-Mar-2017, added 65SC02 optimization
 ;
 ; CC65 runtime: long pop
 ;
@@ -8,6 +9,7 @@
        .import         incsp4
        .importzp       sp, sreg

+        .macpack        cpu

 popeax: ldy     #3
        lda     (sp),y
@@ -18,8 +20,12 @@ popeax: ldy     #3
        dey
        lda     (sp),y
        tax
+.if (.cpu .bitand ::CPU_ISET_65SC02)
+        lda     (sp)
+.else        
        dey
        lda     (sp),y
+.endif
        jmp     incsp4