*** empty log message ***

mach/i86/cg/mach.c

@@ -0,0 +1,111 @@
+/*
+ * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ *
+ *          This product is part of the Amsterdam Compiler Kit.
+ *
+ * Permission to use, sell, duplicate or disclose this software must be
+ * obtained in writing. Requests for such permissions may be sent to
+ *
+ *      Dr. Andrew S. Tanenbaum
+ *      Wiskundig Seminarium
+ *      Vrije Universiteit
+ *      Postbox 7161
+ *      1007 MC Amsterdam
+ *      The Netherlands
+ *
+ */
+
+/*
+ * machine dependent back end routines for the Intel 8086
+ */
+
+con_part(sz,w) register sz; word w; {
+
+	while (part_size % sz)
+		part_size++;
+	if (part_size == EM_WSIZE)
+		part_flush();
+	if (sz == 1) {
+		w &= 0xFF;
+		if (part_size)
+			w <<= 8;
+		part_word |= w;
+	} else {
+		assert(sz == 2);
+		part_word = w;
+	}
+	part_size += sz;
+}
+
+con_mult(sz) word sz; {
+	long l;
+
+	if (sz != 4)
+		fatal("bad icon/ucon size");
+	l = atol(str);
+	fprintf(codefile,"\t.word %d,%d\n",
+			(int)l&0xFFFF,(int)(l>>16)&0xFFFF);
+}
+
+con_float() {
+	register i;
+
+	i= argval ;
+	if (i!= 4 && i!= 8)
+		fatal("bad fcon size");
+	while ( i ) {
+		fprintf(codefile," .word 0,0\n") ;
+		i -=4 ;
+	}
+}
+
+/*
+
+string holstr(n) word n; {
+
+	sprintf(str,hol_off,n,holno);
+	return(mystrcpy(str));
+}
+*/
+
+prolog(nlocals) full nlocals; {
+
+	fprintf(codefile,"\tpush\tbp\n\tmov\tbp,sp\n");
+	switch (nlocals) {
+	case 4: printf("\tpush\tax\n");
+	case 2: printf("\tpush\tax\n");
+	case 0: break;
+	default:
+		printf("\tsub\tsp,%d\n",nlocals); break;
+	}
+
+}
+
+mes(type) word type ; {
+	int argt ;
+
+	switch ( (int)type ) {
+	case ms_ext :
+		for (;;) {
+			switch ( argt=getarg(
+			    ptyp(sp_cend)|ptyp(sp_pnam)|sym_ptyp) ) {
+			case sp_cend :
+				return ;
+			default:
+				strarg(argt) ;
+				printf(".define %s\n",argstr) ;
+				break ;
+			}
+		}
+	default :
+		while ( getarg(any_ptyp) != sp_cend ) ;
+		break ;
+	}
+}
+
+char    *segname[] = {
+	".text",        /* SEGTXT */
+	".data",        /* SEGCON */
+	".data",        /* SEGROM */
+	".bss"          /* SEGBSS */
+};

mach/i86/cg/mach.h

@@ -0,0 +1,26 @@
+#define ex_ap(y)        fprintf(codefile,".extern %s\n",y)
+#define in_ap(y)        /* nothing */
+
+#define newilb(x)       fprintf(codefile,"%s:\n",x)
+#define newdlb(x)       fprintf(codefile,"%s:\n",x)
+#define dlbdlb(x,y)     fprintf(codefile,"%s = %s\n",x,y)
+#define newlbss(l,x)    fprintf(codefile,"%s: .space\t%d\n",l,x);
+
+#define cst_fmt         "%d"
+#define off_fmt         "%d"
+#define ilb_fmt         "I%03x%x"
+#define dlb_fmt         "_%d"
+#define hol_fmt         "hol%d"
+
+#define loc_off         "%d(bp)"
+#define arg_off         "4+%d(bp)"
+#define hol_off         "%d+hol%d"
+
+#define con_cst(x)      fprintf(codefile,".word\t%d\n",x)
+#define con_ilb(x)      fprintf(codefile,".word\t%s\n",x)
+#define con_dlb(x)      fprintf(codefile,".word\t%s\n",x)
+
+#define modhead         ""
+
+#define id_first        '_'
+#define BSS_INIT        0