Added module with zero page locations

git-svn-id: svn://svn.cc65.org/cc65/trunk@1288 b7a2c559-68d2-44c3-8de9-860c34a00d81

asminc/zeropage.inc

@@ -0,0 +1,16 @@
+;
+; zeropage.inc
+;
+; (C) Copyright 2002 Ullrich von Bassewitz (uz@cc65.org)
+;
+
+; Assembler include file that imports the runtime zero page locations used
+; by the compiler, ready for usage in asm code.
+
+
+	.importzp   	sp, sreg, regsave
+	.importzp   	ptr1, ptr2, ptr3, ptr4
+	.importzp   	tmp1, tmp2, tmp3, tmp4
+	.importzp   	regbank, zpspace
+
+

libsrc/runtime/Makefile

@@ -192,7 +192,8 @@ OBJS = 	add.o		\
        	ule.o		\
        	ult.o		\
        	umod.o		\
-       	xor.o
+       	xor.o           \
+        zeropage.o      
 
 all:   	$(OBJS)
 

libsrc/runtime/zeropage.s

@@ -0,0 +1,31 @@
+;
+; Ullrich von Bassewitz, 26.05.2002
+;
+; CC65 runtime: zeropage usage
+;
+
+	.exportzp   	sp, sreg, regsave
+	.exportzp   	ptr1, ptr2, ptr3, ptr4
+	.exportzp   	tmp1, tmp2, tmp3, tmp4
+	.exportzp   	regbank, zpspace
+
+; ------------------------------------------------------------------------
+
+.zeropage
+
+zpstart	= *
+sp:	      	.res   	2 	; Stack pointer
+sreg:	      	.res	2	; Secondary register/high 16 bit for longs
+regsave:      	.res	2	; slot to save/restore (E)AX into
+ptr1:	      	.res	2
+ptr2:	      	.res	2
+ptr3:	      	.res	2
+ptr4:	      	.res	2
+tmp1:	      	.res	1
+tmp2:	      	.res	1
+tmp3:	      	.res	1
+tmp4:	      	.res	1
+regbank:      	.res	6	; 6 byte register bank
+
+zpspace	= * - zpstart		; Zero page space allocated
+