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git-svn-id: svn://svn.cc65.org/cc65/trunk@3 b7a2c559-68d2-44c3-8de9-860c34a00d81

libsrc/runtime/ldaxsp.s

@@ -0,0 +1,28 @@
+;
+; Ullrich von Bassewitz, 31.08.1998
+;
+; CC65 runtime: Load ax from offset in stack
+;
+
+       	.export		ldax0sp, ldaxysp
+	.importzp	sp
+
+; Beware: The optimizer knows about the value in Y after return!
+
+ldax0sp:
+	ldy	#1
+ldaxysp:
+	lda	(sp),y		; get high byte
+	tax			; and save it
+       	bne    	L1		; Try to generate FAST code
+   	dey	      		; point to lo byte
+   	lda	(sp),y		; load low byte
+	rts
+
+L1:	php			; Save Z flag
+  	dey
+  	lda	(sp),y
+  	plp
+  	rts
+
+