*** empty log message ***

mach/ns/ncg/mach.c

@@ -0,0 +1,143 @@
+con_part(sz, w)
+	register int	sz;
+	word		w;
+{
+	while (part_size % sz) part_size++;
+
+	if (part_size == TEM_WSIZE)
+		part_flush();
+	if (sz == 1 || sz == 2) {
+		w &= (sz == 1 ? 0xFF : 0xFFFF);
+		w <<= 8 * part_size;
+		part_word |= w;
+	} else {
+		assert(sz == 4);
+		part_word = w;
+	}
+	part_size += sz;
+}
+
+con_mult(sz)
+	word	sz;
+{
+	if (sz != 4)
+		fatal("bad icon/ucon size");
+	fprintf(codefile,".long\t%s\n",str);
+}
+
+#ifdef REGVARS
+full lbytes;
+struct regadm {
+	char *ra_str;
+	long ra_off;
+} regadm[4];
+int n_regvars;
+
+regscore(off,size,typ,score,totyp) long off; {
+
+	/*This function is copied from pdp/ncg
+	 */
+	/*
+	 * This function is full of magic constants.
+	 * They are a result of experimentation.
+	 */
+
+	if (size != 2)
+		return(-1);
+	score -= 1;	/* allow for save/restore */
+	if (off>=0)
+		score -= 2;
+	if (typ==reg_pointer)
+		score *= 17;
+	else if (typ==reg_loop)
+		score = 10*score+50;	/* Guestimate */
+	else
+		score *= 10;
+	return(score);	/* 10 * estimated # of words of profit */
+}
+
+i_regsave() {
+
+	n_regvars=0;
+}
+
+f_regsave(){
+	register i;
+
+	fprintf(codefile, "enter [");
+	if (n_regvars>=1){
+		fprintf(codefile,"%s",regadm[0].ra_str);
+		for (i=1; i<n_regvars; i++)
+			fprintf(codefile,",%s",regadm[0].ra_str);
+	}
+	fprintf(codefile, "], %d\n", lbytes);
+	for (i=0;i<n_regvars;i++)
+		if (regadm[i].ra_off>=0)
+			fprintf(codefile, "movd %ld(fp), %s",
+			  regadm[i].ra_off, regadm[i].ra_str);
+}
+
+regsave(regstr,off,size) char *regstr; long off; {
+
+	fprintf(codefile,"\t! Local %ld into %s\n",off,regstr);
+	regadm[n_regvars].ra_str = regstr;
+	regadm[n_regvars].ra_off = off;
+	n_regvars++;
+}
+
+regreturn() {
+	register int i;
+
+	fprintf(codefile, "exit [");
+	if (n_regvars>=1){
+		fprintf(codefile,"%s",regadm[0].ra_str);
+		for (i=1; i<n_regvars; i++)
+			fprintf(codefile,",%s",regadm[0].ra_str);
+	}
+	fprintf(codefile, "]\n");
+}
+
+#endif
+
+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) ;
+				fprintf(codefile,".define %s\n",argstr) ;
+				break ;
+			}
+		}
+	default :
+		while ( getarg(any_ptyp) != sp_cend ) ;
+		break ;
+	}
+}
+
+prolog(nlocals) full nlocals; {
+
+#ifndef REGVARS
+	fprintf(codefile, "enter[], %d\n",nlocals);
+#else
+	lbytes = nlocals;
+#endif
+}
+
+char *segname[] = {
+	".text",
+	".data",
+	".data",
+	".bss"
+};
+
+con_float() {
+
+	fatal("no reals");
+}

mach/ns/ncg/mach.h

@@ -0,0 +1,22 @@
+#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 hol_off         "%d+hol%d"
+
+#define con_cst(x)      fprintf(codefile,".long\t%d\n",x)
+#define con_ilb(x)      fprintf(codefile,".long\t%s\n",x)
+#define con_dlb(x)      fprintf(codefile,".long\t%s\n",x)
+
+#define id_first        '_'
+#define BSS_INIT        0