--- /dev/null
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ *
+ */
+
+#ifndef NORCSID
+static char rcs_m[]= "$Header$" ;
+static char rcs_mh[]= ID_MH ;
+#endif
+
+/*
+ * machine dependent back end routines for the Intel 80386
+ */
+
+con_part(sz,w) register 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; {
+ long l;
+
+ if (sz != 4)
+ fatal("bad icon/ucon size");
+ l = atol(str);
+ fprintf(codefile,"\t.data4 %ld\n", l);
+}
+
+#ifdef NOFLOAT
+con_float() {
+
+static int been_here;
+ if (argval != 4 && argval != 8)
+ fatal("bad fcon size");
+ fputs(".data4\t", codefile);
+ if (argval == 8)
+ fputs("0,", codefile);
+ fputs("0 !dummy float\n", codefile);
+ if ( !been_here++)
+ {
+ fputs("Warning : dummy float-constant(s)\n", stderr);
+ }
+}
+#else
+#define IEEEFLOAT
+
+con_float() {
+ double f;
+ double atof();
+ int i;
+ int j;
+ double frexp();
+#ifndef OWNFLOAT
+ int sign = 0;
+ int fraction[4] ;
+#else OWNFLOAT
+ float fl;
+ char *p;
+#endif OWNFLOAT
+
+ if (argval!= 4 && argval!= 8) {
+ fprintf(stderr,"float constant size = %d\n",argval);
+ fatal("bad fcon size");
+ }
+ fprintf(codefile,"!float %s sz %d\n", str, argval);
+ f = atof(str);
+ if (f == 0) {
+ if (argval == 8) fprintf(codefile, ".data4 0\n");
+ fprintf(codefile, ".data4 0\n");
+ return;
+ }
+#ifdef OWNFLOAT
+ if (argval == 4) {
+ /* careful: avoid overflow */
+ double ldexp();
+ f = frexp(f, &i);
+ fl = f;
+ fl = frexp(fl,&j);
+ if (i+j > 127) {
+ /* overflow situation */
+ fprintf(codefile, ".data1 0%o, 0377, 0377, 0377 ! overflow\n",
+ f < 0 ? 0377 : 0177);
+ return;
+ }
+ if (i+j < -127) {
+ /* underflow situation */
+ fprintf(codefile, ".data1 0%o, 0200, 0, 0 ! underflow\n",
+ f < 0 ? 0200 : 0);
+ return;
+ }
+ fl = ldexp(fl, i+j);
+ p = (char *) &fl;
+ }
+ else {
+ p = (char *) &f;
+ }
+ fprintf(codefile, ".data1 0%o", *p++ & 0377);
+ for (i = argval-1; i; i--) {
+ fprintf(codefile,",0%o", *p++ & 0377);
+ }
+#else OWNFLOAT
+ f = frexp(f, &i);
+ if (f < 0) {
+ f = -f;
+ sign = 1;
+ }
+ while (f < 0.5) {
+ f += f;
+ i --;
+ }
+ f = 2*f - 1.0; /* hidden bit */
+#ifdef IEEEFLOAT
+ if (argval == 4) {
+#endif IEEEFLOAT
+ i = (i + 128) & 0377;
+ fraction[0] = (sign << 15) | (i << 7);
+ for (j = 6; j>= 0; j--) {
+ f *= 2;
+ if (f >= 1.0) {
+ f -= 1.0;
+ fraction[0] |= (1 << j);
+ }
+ }
+#ifdef IEEEFLOAT
+ }
+ else {
+ i = (i + 1024) & 03777;
+ fraction[0] = (sign << 15) | (i << 4);
+ for (j = 3; j>= 0; j--) {
+ f *= 2;
+ if (f >= 1.0) {
+ fraction[0] |= (1 << j);
+ f -= 1.0;
+ }
+ }
+ }
+#endif IEEEFLOAT
+ for (i = 1; i < argval / 2; i++) {
+ fraction[i] = 0;
+ for (j = 15; j>= 0; j--) {
+ f *= 2;
+ if (f >= 1.0) {
+ fraction[i] |= (1 << j);
+ f -= 1.0;
+ }
+ }
+ }
+ if (f >= 0.5) {
+ for (i = argval/2 - 1; i >= 0; i--) {
+ for (j = 0; j < 16; j++) {
+ if (fraction[i] & (1 << j)) {
+ fraction[i] &= ~(1 << j);
+ }
+ else {
+ fraction[i] |= (1 << j);
+ break;
+ }
+ }
+ if (j != 16) break;
+ }
+ }
+ for (i = 0; i < argval/2; i++) {
+ fprintf(codefile,
+ i != 0 ? ", 0%o, 0%o" : ".data1 0%o, 0%o",
+ (fraction[i]>>8)&0377,
+ fraction[i]&0377);
+ }
+#endif OWNFLOAT
+ putc('\n', codefile);
+}
+#endif
+
+/*
+
+string holstr(n) word n; {
+
+ sprintf(str,hol_off,n,holno);
+ return(mystrcpy(str));
+}
+*/
+
+prolog(nlocals) full nlocals; {
+
+ if (nlocals < 32767) {
+ fprintf(codefile, "\tenter %ld,0\n", nlocals);
+ }
+ else {
+ fputs("\tenter 0,0\n", codefile);
+ fprintf(codefile, "\tsub\tesp,%ld\n",nlocals);
+ }
+}
+
+#ifdef REGVARS
+long si_off;
+long di_off;
+int firstreg;
+
+regscore(off, size, typ, score, totyp)
+ long off;
+{
+ if (size != 4) return -1;
+ score -= 1;
+ score += score;
+ if (typ == reg_pointer || typ == reg_loop) score += (score >> 2);
+ score -= 2; /* cost of saving */
+ if (off >= 0) score -= 3;
+ return score;
+}
+
+i_regsave()
+{
+ si_off = -1;
+ di_off = -1;
+ firstreg = 0;
+}
+
+f_regsave()
+{
+}
+
+regsave(regstr, off, size)
+ char *regstr;
+ long off;
+{
+ if (strcmp(regstr, "esi") == 0) {
+ if (! firstreg) firstreg = -1;
+ si_off = off;
+ fputs("push esi\n", codefile);
+ if (off >= 0)
+ fprintf(codefile, "mov esi,%ld(ebp)\n", off);
+ }
+ else {
+ if (! firstreg) firstreg = 1;
+ di_off = off;
+ fputs("push edi\n", codefile);
+ if (off >= 0)
+ fprintf(codefile, "mov edi,%ld(ebp)\n", off);
+ }
+}
+
+regreturn()
+{
+ if (firstreg == 1) {
+ if (si_off != -1) fputs("pop esi\n", codefile);
+ fputs("pop edi\n", codefile);
+ }
+ else if (firstreg == -1) {
+ if (di_off != -1) fputs("pop edi\n", codefile);
+ fputs("pop esi\n", codefile);
+ }
+ fputs("leave\nret\n", codefile);
+}
+#endif REGVARS
+
+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 ;
+ }
+}
+
+char *segname[] = {
+ ".sect .text", /* SEGTXT */
+ ".sect .data", /* SEGCON */
+ ".sect .rom", /* SEGROM */
+ ".sect .bss" /* SEGBSS */
+};
--- /dev/null
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
+#ifndef NORCSID
+#define ID_MH "$Header$"
+#endif
+
+#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%ld\n",l,x);
+
+#define cst_fmt "%ld"
+#define off_fmt "%ld"
+#define ilb_fmt "I%x_%x"
+#define dlb_fmt "I_%d"
+#define hol_fmt "hol%d"
+
+#define hol_off "%ld+hol%d"
+
+#define con_cst(x) fprintf(codefile,".data4\t%ld\n",x)
+#define con_ilb(x) fprintf(codefile,".data4\t%s\n",x)
+#define con_dlb(x) fprintf(codefile,".data4\t%s\n",x)
+
+#define modhead ".sect .text; .sect .rom; .sect .data; .sect .bss\n"
+
+#define fmt_id(fr,to) sprintf(to, "_%s", fr)
+
+#define BSS_INIT 0
public / ack.git / commitdiff