Added the hack for write() to make printf work

git-svn-id: svn://svn.cc65.org/cc65/trunk@907 b7a2c559-68d2-44c3-8de9-860c34a00d81
2001-09-13 16:01:32 +00:00
parent 3d85621819
commit b0687bbbf5
3 changed files with 53 additions and 9 deletions
--- a/libsrc/c128/write.s
+++ b/libsrc/c128/write.s
@@ -0,0 +1,47 @@
+;
+; Ullrich von Bassewitz, 30.05.1998
+;
+; int write (int fd, const void* buf, int count);
+;
+; THIS IS A HACK!
+;
+
+	.export		_write
+	.import		popax
+	.importzp	ptr1, ptr2, ptr3
+
+	.include 	"../cbm/cbm.inc"
+
+_write:	jsr	popax 		; get count
+       	sta    	ptr2
+	stx	ptr2+1		; save it for later
+	sta	ptr3
+	stx	ptr3+1		; save for function result
+	jsr	popax		; get buf
+	sta	ptr1
+	stx	ptr1+1
+	jsr	popax		; get fd and discard it
+
+L1:	lda	ptr2
+	ora	ptr2+1		; count zero?
+	beq	L9
+	ldy	#0
+	lda	(ptr1),y
+	jsr	BSOUT
+	inc	ptr1
+	bne	L2
+	inc	ptr1+1
+L2:	lda	ptr2
+	bne	L3
+	dec	ptr2
+	dec	ptr2+1
+	jmp	L1
+L3:	dec	ptr2
+	jmp	L1
+
+; No error, return count
+
+L9:   	lda	ptr3
+    	ldx	ptr3+1
+    	rts
+