#endif
/*
- * (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
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
*
* Author: Hans van Staveren
*/
* machine dependent back end routines for the PDP-11
*/
+/* #define REGPATCH /* save all registers in markblock */
+
con_part(sz,w) register sz; word w; {
while (part_size % sz)
part_size++;
- if (part_size == 2)
+ if (part_size == TEM_WSIZE)
part_flush();
if (sz == 1) {
w &= 0xFF;
}
con_mult(sz) word sz; {
- long l;
+ long l, atol();
if (sz != 4)
fatal("bad icon/ucon size");
+#ifdef ACK_ASS
+ fprintf(codefile,".data4 %s\n",str);
+#else
l = atol(str);
fprintf(codefile,"\t%o;%o\n",(int)(l>>16),(int)l);
+#endif
}
+/*
+ * The next function is difficult to do when not running on a PDP 11 or VAX
+ * The strategy followed is to assume the code generator is running on a PDP 11
+ * unless the ACK_ASS define is on.
+ */
+
con_float() {
- double f;
- register short *p,i;
+#ifdef ACK_ASS
+ double f, f1;
+ double atof(), frexp(), modf();
+ int i, j;
+ int sign = 0;
+ int fraction ;
- /*
- * This code is correct only when the code generator is
- * run on a PDP-11 or VAX-11 since it assumes native
- * floating point format is PDP-11 format.
- */
+ if (argval != 4 && argval != 8)
+ fatal("bad fcon size");
+ f = atof(str);
+ f = frexp(f, &i);
+ if (f < 0) {
+ f = -f;
+ sign = 1;
+ }
+ while (f < 0.5) {
+ f += f;
+ i --;
+ }
+ f = modf(2 * f, &f1); /* hidden bit */
+ i = (i + 128) & 0377;
+ fraction = (sign << 15) | (i << 7);
+ for (j = 6; j>= 0; j--) {
+ if (f >= 0.5) fraction |= (1 << j);
+ f = modf(2*f, &f1);
+ }
+ fprintf(codefile, ".data2 0%o", fraction);
+ for (i = argval / 2 - 1; i; i--) {
+ fraction = 0;
+ for (j = 15; j>= 0; j--) {
+ if (f >= 0.5) fraction |= (1 << j);
+ f = modf(2*f, &f1);
+ }
+ fprintf(codefile, ", 0%o", fraction);
+ }
+ putc('\n', codefile);
+#else
+ double f;
+ double atof();
+ int i;
+ short *p;
if (argval != 4 && argval != 8)
fatal("bad fcon size");
i = *p++;
}
fprintf(codefile,"\t%o;%o\n",i,*p++);
+#endif
}
#ifdef REGVARS
regscore(off,size,typ,score,totyp) long off; {
- /*
- * This function is full of magic constants.
- * They are a result of experimentation.
- */
-
if (size != 2)
return(-1);
score -= 1; /* allow for save/restore */
score = 10*score+50; /* Guestimate */
else
score *= 10;
- return(score); /* 10 * estimated # of words of profit */
+ return(score); /* estimated # of words of profit */
}
i_regsave() {
register i;
if (n_regvars==0 || lbytes==0) {
+#ifdef REGPATCH
+ fprintf(codefile,"mov r2,-(sp)\nmov r4,-(sp)\n");
+#endif
fprintf(codefile,"mov r5,-(sp)\nmov sp,r5\n");
if (lbytes == 2)
fprintf(codefile,"tst -(sp)\n");
regsave(regstr,off,size) char *regstr; long off; {
- fprintf(codefile,"/ Local %ld into %s\n",off,regstr);
+ fprintf(codefile,"%c Local %ld into %s\n",COMMENTCHAR,off,regstr);
+/* commented away
+#ifndef REGPATCH
+ fprintf(codefile,"mov %s,-(sp)\n",regstr);
+#endif
+ strcat(Rstring,regstr);
+ if (off>=0)
+ fprintf(codefile,"mov 0%lo(r5),%s\n",off,regstr);
+end of commented away */
+
strcat(Rstring,regstr);
regadm[n_regvars].ra_str = regstr;
regadm[n_regvars].ra_off = off;
regreturn() {
+#ifdef REGPATCH
+ fprintf(codefile,"jmp eret\n");
+#else
fprintf(codefile,"jmp RT%s\n",Rstring);
+#endif
}
#endif
prolog(nlocals) full nlocals; {
#ifndef REGVARS
+#ifdef REGPATCH
+ fprintf(codefile,"mov r2,-(sp)\nmov r4,-(sp)\n");
+#endif
fprintf(codefile,"mov r5,-(sp)\nmov sp,r5\n");
if (nlocals == 0)
return;
return ;
default:
strarg(argt) ;
+#ifdef ACK_ASS
+ fprintf(codefile,".define %s\n",argstr) ;
+#else
fprintf(codefile,".globl %s\n",argstr) ;
+#endif
break ;
}
}
}
char *segname[] = {
+#ifdef ACK_ASS
+ ".sect .text", /* SEGTXT */
+ ".sect .data", /* SEGCON */
+ ".sect .rom", /* SEGROM */
+ ".sect .bss" /* SEGBSS */
+#else
".text", /* SEGTXT */
".data", /* SEGCON */
".data", /* SEGROM */
".bss" /* SEGBSS */
+#endif
};
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
/* $Header$ */
+/* The next define switches between codegeneration for an ACK assembler
+ * or for the standard UNIX V7 assembler.
+ * If on code is generated for the ACK assembler.
+ */
+#define ACK_ASS /* code for ACK assembler */
+
+#ifdef ACK_ASS
+#define COMMENTCHAR '!'
+#define ex_ap(y) fprintf(codefile,".extern %s\n",y)
+#else
+#define COMMENTCHAR '/'
#define ex_ap(y) fprintf(codefile,".globl %s\n",y)
+#endif
#define in_ap(y) /* nothing */
#define newplb(x) fprintf(codefile,"%s:\n",x)
#define newilb(x) fprintf(codefile,"%s:\n",x)
#define newdlb(x) fprintf(codefile,"%s:\n",x)
+#ifdef ACK_ASS
+#define newlbss(l,x) fprintf(codefile,"%s:.space 0%o\n",l,x);
+#else
#define newlbss(l,x) fprintf(codefile,"%s:.=.+0%o\n",l,x);
+#endif
#define cst_fmt "$0%o"
#define off_fmt "0%o"
#define dlb_fmt "_%d"
#define hol_fmt "hol%d"
-#define hol_off "0%o+hol%d"
+#define hol_off "0%lo+hol%d"
-#define con_cst(x) fprintf(codefile,"0%o\n",x)
+#ifdef ACK_ASS
+#define con_cst(x) fprintf(codefile,".data2 0%lo\n",x)
+#define con_ilb(x) fprintf(codefile,".data2 %s\n",x)
+#define con_dlb(x) fprintf(codefile,".data2 %s\n",x)
+#else
+#define con_cst(x) fprintf(codefile,"0%lo\n",x)
#define con_ilb(x) fprintf(codefile,"%s\n",x)
#define con_dlb(x) fprintf(codefile,"%s\n",x)
+#endif
+#ifdef ACK_ASS
+#define modhead ".sect .text; .sect .rom; .sect .data; .sect .bss\n"
+#define fmt_id(f,t) sprintf(t,"_%s",f)
+#else
#define id_first '_'
+#endif
+
#define BSS_INIT 0
public / ack.git / commitdiff