Added support for the Oric atmos (with some help by Debrune Jérôme

<jede@oric.org>)


git-svn-id: svn://svn.cc65.org/cc65/trunk@1297 b7a2c559-68d2-44c3-8de9-860c34a00d81

libsrc/Makefile

@@ -12,13 +12,14 @@ AR = ../src/ar65/ar65
 
 # List of all targets
 ALLTARGETS =	apple2lib	\
-		atarilib	\
-		c64lib		\
-		c128lib		\
+		atarilib 	\
+		atmoslib	\
+		c64lib	 	\
+		c128lib	 	\
 		cbm510lib	\
 		cbm610lib	\
-		geoslib		\
-		petlib		\
+		geoslib	 	\
+		petlib	 	\
 		plus4lib
 
 #-----------------------------------------------------------------------------
@@ -60,6 +61,22 @@ atarilib:
 	    $(AR) a atari.lib $$i/*.o;\
 	done
 
+#-----------------------------------------------------------------------------
+# Oric Atmos
+
+atmoslib:
+	for i in atmos common runtime; do \
+	    CC=$(CC) \
+	    AS=$(AS) \
+	    CFLAGS="-Osir -g -T -t atmos -I../../include" \
+       	    AFLAGS="-t atmos -I../../asminc" \
+	    $(MAKE) -C $$i || exit 1; \
+	done
+	mv atmos/crt0.o atmos.o
+	for i in atmos common runtime; do \
+	    $(AR) a atmos.lib $$i/*.o;\
+	done
+
 #-----------------------------------------------------------------------------
 # C64
 

libsrc/atmos/Makefile

@@ -0,0 +1,20 @@
+#
+# makefile for CC65 runtime library
+#
+
+.SUFFIXES: .o .s .c
+
+%.o:   	%.c
+	@$(CC) $(CFLAGS) $<
+	@$(AS) -o $@ $(AFLAGS) $(*).s
+
+%.o:	%.s
+	@$(AS) -g -o $@ $(AFLAGS) $<
+
+OBJS =  crt0.o
+
+all:	$(OBJS)
+
+clean:
+	@rm -f $(OBJS)
+

libsrc/atmos/crt0.s

@@ -0,0 +1,88 @@
+;
+; Startup code for cc65 (Oric version)
+;
+; By Debrune Jérôme <jede@oric.org> and Ullrich von Bassewitz <uz@cc65.org>
+;
+; This must be the *first* file on the linker command line
+;
+
+	.export		_exit
+	.import		initlib, donelib
+	.import	     	push0, _main, zerobss
+	.import		__RAM_START__, __RAM_SIZE__	; Linker generated
+
+
+; ------------------------------------------------------------------------
+; Define and export the ZP variables for the Oric runtime
+
+	.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
+
+.code
+
+; ------------------------------------------------------------------------
+; Actual code
+
+; Clear the BSS data
+
+	jsr	zerobss
+
+; Save system stuff and setup the stack
+
+       	tsx
+       	stx    	spsave       	; save system stk ptr
+
+	lda    	#<(__RAM_START__ + __RAM_SIZE__)
+	sta	sp
+	lda	#>(__RAM_START__ + __RAM_SIZE__)
+       	sta	sp+1   		; Set argument stack ptr
+
+; Call module constructors
+
+	jsr	initlib
+
+; Pass an empty command line
+
+       	jsr    	push0		; argc
+	jsr	push0		; argv
+
+	ldy	#4    		; Argument size
+       	jsr    	_main 		; call the users code
+
+; Call module destructors. This is also the _exit entry.
+
+_exit:	jsr	donelib		; Run module destructors
+
+; Restore system stuff
+
+	ldx	spsave
+	txs
+
+; Back to BASIC
+
+	rts
+
+.bss
+spsave:	.res	1
+
+