WebSVN – tendra.SVN – Diff – /trunk/src/installers/80x86/common/weights.c

+/*
+ * Copyright (c) 2002-2005 The TenDRA Project <http://www.tendra.org/>.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of The TenDRA Project nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific, prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
+ * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $Id$
+ */
 /*
     		 Crown Copyright (c) 1997
     This TenDRA(r) Computer Program is subject to Copyright
     owned by the United Kingdom Secretary of State for Defence
 #include "weights.h"
 /* MACROS */
-#define max(x,y) ((x>=y) ? (x) : (y))
+#define max(x,y)((x>=y)?(x):(y))
 #define wno 6
  /* number of available registers */
 #define wfno 7
  /* number of available floating point registers */
 };
 typedef struct elt  explist;
 				/* list of identity declarations in force
 				   at this point */
-weights weightsv PROTO_S ( ( exp, explist * ) ) ;
+weights weightsv(exp, explist *);
 /* VARIABLES */
 weights zeros, moveregs, cmpregs, divregs, applyregs;
 	/* init by init_weights */
 /* PROCEDURES */
 static int no_side_aux
-    PROTO_N ( (e) )
-    PROTO_T ( exp e )
+(exp e)
+{
   exp arg;
-  if (name(e)==name_tag || name(e)==env_offset_tag || name(e)==top_tag || son(e)==nilexp)
+  if (name(e) ==name_tag || name(e) ==env_offset_tag || name(e) ==top_tag || son(e) ==nilexp)
     return 1;
-  for (arg=son(e); ; arg=bro(arg))
+  for (arg=son(e);; arg=bro(arg))
+  {
-    if ((!is_a(name(arg)) && name(arg) != ident_tag) || !no_side_aux(arg))
+    if ((!is_a(name(arg)) && name(arg)!= ident_tag) || !no_side_aux(arg))
       return 0;
     if (last(arg))
       return 1;
+  }
+}
 /* test for guaranteed no side effect */
 /* simple assignment is permitted */
 int no_side
-    PROTO_N ( (e) )
-    PROTO_T ( exp e )
+(exp e)
+{
-  return ((is_a (name (e)) || name (e) == test_tag || name (e) == ass_tag ||
+  return((is_a(name(e)) || name(e) == test_tag || name(e) == ass_tag ||
-	   name (e) == testbit_tag || name (e) == ident_tag)
+	   name(e) == testbit_tag || name(e) == ident_tag)
-	&& no_side_aux (e));
+	&& no_side_aux(e));
+}
 /* add two weight vectors */
 weights add_weights
-    PROTO_N ( (w1, w2) )
-    PROTO_T ( weights w1 X weights w2 )
+(weights w1, weights w2)
+{
   weights r;
   float  wa,
          wb;
   int i;
   for (i = 0; i < (wno + wfno); ++i) {
     wa = (w1.w_weights)[i];
     wb = (w2.w_weights)[i];
-    (r.w_weights)[i] = wa + wb;
+   (r.w_weights)[i] = wa + wb;
   };
-  r.booked = max (w1.booked, w2.booked);
+  r.booked = max(w1.booked, w2.booked);
-  r.flbooked = max (w1.flbooked, w2.flbooked);
+  r.flbooked = max(w1.flbooked, w2.flbooked);
-  return (r);
+  return(r);
+}
 void init_weights
-    PROTO_Z ()
+(void)
+{
 		/* initialisation of constants */
   int  i;
   for (i = 0; i < (wno + wfno); ++i) {
-    (zeros.w_weights)[i] = vzeros[i];
+   (zeros.w_weights)[i] = vzeros[i];
-    (moveregs.w_weights)[i] = vmoveregs[i];
+   (moveregs.w_weights)[i] = vmoveregs[i];
-    (cmpregs.w_weights)[i] = vcmpregs[i];
+   (cmpregs.w_weights)[i] = vcmpregs[i];
-    (divregs.w_weights)[i] = vdivregs[i];
+   (divregs.w_weights)[i] = vdivregs[i];
-    (applyregs.w_weights)[i] = vapplyregs[i];
+   (applyregs.w_weights)[i] = vapplyregs[i];
   };
   zeros.booked = -1;
   moveregs.booked = 1;
   cmpregs.booked = 1;
   divregs.booked = 1;
   return;
+}
 void markcall
-    PROTO_N ( (el) )
-    PROTO_T ( explist * el )
+(explist * el)
+{
   explist * t = el;
-  while (t != (explist *) 0) {
+  while (t != (explist *)0) {
-    set_intnl_call (t -> wident);
+    set_intnl_call(t -> wident);
     t = t -> etl;
   };
+}
 /* mark all the declarations in the list
    of currently active declarations, to
    show that there is a call, movc3 etc.
    within their scope */
 void markmove
-    PROTO_N ( (el) )
-    PROTO_T ( explist * el )
+(explist * el)
+{
   explist * t = el;
-  while (t != (explist *) 0) {
+  while (t != (explist *)0) {
-    set_intnl_call (t -> wident);
+    set_intnl_call(t -> wident);
     t = t -> etl;
   };
+}
 /* mark to show reg1 may be needed */
 void markreg1
-    PROTO_N ( (el) )
-    PROTO_T ( explist * el )
+(explist * el)
+{
   explist * t = el;
-  while (t != (explist *) 0) {
+  while (t != (explist *)0) {
-    set_intnl_call (t -> wident);
+    set_intnl_call(t -> wident);
     t = t -> etl;
   };
+}
 /* work out weights for a declaration and
    set up the break point to put in the no
    field of the declaration */
 wp max_weights
-    PROTO_N ( (size, locp, ws, isfl) )
-    PROTO_T ( int size X float locp X weights ws X int isfl )
+(int size, float locp, weights ws, int isfl)
+{
   int  k = (size + 31) / 32;
   int  bk = 11;
   int bkset = 0;
   int  q;
   int  i;
-  float * w = &(ws.w_weights)[(isfl) ? wno : 0];
+  float * w = & (ws.w_weights)[(isfl)? wno : 0];
   wp res;
-  float *pw = &((res.wp_weights).w_weights)[(isfl) ? wno : 0];
+  float *pw = & ((res.wp_weights).w_weights)[(isfl)? wno : 0];
-  int  bkd = (isfl) ? ws.flbooked : ws.booked;
+  int  bkd = (isfl)? ws.flbooked : ws.booked;
-  int  lwno = (isfl) ? wfno : wno;
+  int  lwno = (isfl)? wfno : wno;
   res.wp_weights.booked = ws.booked;
   res.wp_weights.flbooked = ws.flbooked;
   for (i = 0; i < (wno + wfno); ++i)
-    ((res.wp_weights).w_weights)[i] = (ws.w_weights)[i];
+   ((res.wp_weights).w_weights)[i] = (ws.w_weights)[i];
+   {
     float  loc = locp * k;
     q = -1;
     for (i = 0; i < lwno; ++i) {
     };
   };
   res.wp_break = bk;
-  return (res);
+  return(res);
+}
 /* see if we must use movc3?? */
 weights try_mc3
-    PROTO_N ( (e, ws, el) )
-    PROTO_T ( exp e X weights ws X explist * el )
+(exp e, weights ws, explist * el)
+{
   int  sz = shape_size(sh(e));
   if (sz <= 128)
-    return (ws);
+    return(ws);
-  markmove (el);
+  markmove(el);
-  return (add_weights (ws, moveregs));
+  return(add_weights(ws, moveregs));
+}
 /* work out the weights for a list of exp.
    usemc3 is 1 if movc3 may be used. */
 weights add_wlist
-    PROTO_N ( (re, usemc3, el) )
-    PROTO_T ( exp re X int usemc3 X explist * el )
+(exp re, int usemc3, explist * el)
+{
   weights wl1, wl2;
   if (re == nilexp)
-    return (zeros);
+    return(zeros);
-  wl1 = weightsv (re, el);
+  wl1 = weightsv(re, el);
   if (usemc3)
-    wl1 = try_mc3 (re, wl1, el);
+    wl1 = try_mc3(re, wl1, el);
-  while (!last (re)) {
+  while (!last(re)) {
-    re = bro (re);
+    re = bro(re);
-    wl2 = weightsv (re, el);
+    wl2 = weightsv(re, el);
     if (usemc3)
-      wl1 = add_weights (wl1, try_mc3 (re, wl2, el));
+      wl1 = add_weights(wl1, try_mc3(re, wl2, el));
     else
-      wl1 = add_weights (wl1, wl2);
+      wl1 = add_weights(wl1, wl2);
   };
-  return (wl1);
+  return(wl1);
+}
 /* can the value defined by e be put in a register */
 int regable
-    PROTO_N ( (e) )
-    PROTO_T ( exp e )
+(exp e)
+{
   unsigned char  n;
-  shape sha = sh (son (e));
+  shape sha = sh(son(e));
-  n = name (sha);
+  n = name(sha);
-  if (isvis (e) || n == cpdhd || n == nofhd || n == s64hd || n == u64hd)
+  if (isvis(e) || n == cpdhd || n == nofhd || n == s64hd || n == u64hd)
-    return (0);
+    return(0);
   if (all_variables_visible && isvar(e))
     return 0;
-  return (1);
+  return(1);
+}
 int isflsh
-    PROTO_N ( (s) )
-    PROTO_T ( shape s )
+(shape s)
+{
-  unsigned char  n = name (s);
+  unsigned char  n = name(s);
-  return (n >= shrealhd && n <= doublehd);
+  return(n >= shrealhd && n <= doublehd);
+}
 /* Work out weights and set break points
    scale is the expected number of times
    is computed in the no of the
    declaration. After the scan the break
    point is put into the no of the
    declaration */
 weights weightsv
-    PROTO_N ( (e, el) )
-    PROTO_T ( exp e X explist * el )
+(exp e, explist * el)
+{
-  unsigned char  n = name (e);
+  unsigned char  n = name(e);
   float old_scale;
   weights swl, bwl;
   switch (n) {
     case name_tag: {
-	if (!isglob (son (e)))
+	if (!isglob(son(e)))
 	  fno (son (e)) += scale;/* add number of uses to the no field of
 				   the declaration */
-	return (zeros);
+	return(zeros);
       };
     case make_lv_tag:
         return zeros;
     case ident_tag:
+       {
 	explist nel;
-	exp t = pt (e);
+	exp t = pt(e);
 	nel.wident = e;
 	nel.etl = el;
-	while (isvar (e) && !isvis (e) && t != nilexp) {
+	while (isvar(e) && !isvis(e) && t != nilexp) {
-	  if (!(last (t) && name (bro (t)) == cont_tag) &&
+	  if (!(last(t) && name(bro(t)) == cont_tag) &&
               !(last(t) && name(bro(t)) == hold_tag) &&
-	      !(last (bro (t)) && (name (bro (bro (t))) == ass_tag ||
+	      !(last(bro(t)) && (name(bro(bro(t))) == ass_tag ||
-		  name (bro (bro (t))) == assvol_tag
+		  name(bro(bro(t))) == assvol_tag
 		)))
-	    setvis (e);
+	    setvis(e);
-	  t = pt (t);
+	  t = pt(t);
 	};
-	if (son (e) != nilexp) {
+	if (son(e)!= nilexp) {
 	  weights wdef, wbody;
-	  exp def = son (e);
+	  exp def = son(e);
-	  exp body = bro (def);
+	  exp body = bro(def);
 	  if (name(sh(def)) == u64hd || name(sh(def)) == s64hd)
 	    markreg1(el);
 	  fno (e) = 0.0;	/* clear the accumulated value field */
-	  wbody = weightsv (body, &nel);
+	  wbody = weightsv(body, &nel);
 	  /* do body (which will add to the accumulated value field */
-	  if (regable (e)) {
+	  if (regable(e)) {
 	    wp p;
-	    float  loc = fno (e);
+	    float  loc = fno(e);
             if (has_intnl_call(e))
                loc += 2.0;
-	    p = max_weights (shape_size(sh (def)),
+	    p = max_weights(shape_size(sh(def)),
-		(name (def) == name_tag && isusereg (e)) ? 1.0 : loc,
+		(name(def) == name_tag && isusereg(e))? 1.0 : loc,
 		wbody,
-		isflsh (sh (def)));
+		isflsh(sh(def)));
-	    if (name (def) == clear_tag)
+	    if (name(def) == clear_tag)
 	      wdef = zeros;
 	    else {
 	      float  sp_scale = scale;
-	      if (!isvar (e) &&
+	      if (!isvar(e) &&
-		  ((name (def) == name_tag && !isvar (son (def)) &&
+		 ((name(def) == name_tag && !isvar(son(def)) &&
-		      (!isglob (son (def))) && !isloadparam(def)
+		     (!isglob(son(def))) && !isloadparam(def)
-		    ) ||
+		   ) ||
-		    (name (def) == cont_tag &&
+		   (name(def) == cont_tag &&
-		      name (son (def)) == name_tag &&
+		      name(son(def)) == name_tag &&
-		      isvar (son (son (def))) &&
+		      isvar(son(son(def))) &&
-		      (!isglob (son (son (def)))) &&
+		     (!isglob(son(son(def)))) &&
-		      no_side (body)))) {
+		      no_side(body)))) {
-		if (isusereg (e)) {
+		if (isusereg(e)) {
-		  sp_scale = 8.0 * fno (e);
+		  sp_scale = 8.0 * fno(e);
+		}
 		else
-		  sp_scale = fno (e);
+		  sp_scale = fno(e);
 		p.wp_break = 0;
 		p.wp_weights = wbody;
 	      };
               old_scale = scale;
               scale = sp_scale;
 	      wdef =
-		weightsv (def, el);
+		weightsv(def, el);
-	      wdef = try_mc3 (def, wdef, el);
+	      wdef = try_mc3(def, wdef, el);
               scale = old_scale;
 	    };
 	    no (e) = p.wp_break;/* set the break point */
-	    return (add_weights (wdef, p.wp_weights));
+	    return(add_weights(wdef, p.wp_weights));
 	  };
 	  if (name(sh(def)) == nofhd && ptno(sh(def)) == realhd &&
 		shape_size(sh(def)) >= 640)
 	    useful_double = 1;
-	  if (name (def) == clear_tag)
+	  if (name(def) == clear_tag)
 	    wdef = zeros;
 	  else {
 	    wdef =
-		weightsv (def, el);
+		weightsv(def, el);
-	      wdef = try_mc3 (def, wdef, el);
+	      wdef = try_mc3(def, wdef, el);
 	  };
-	  no (e) = 16;
+	  no(e) = 16;
-	  return (add_weights (wdef, wbody));
+	  return(add_weights(wdef, wbody));
 	};
-	return (zeros);
+	return(zeros);
       };
     case labst_tag: {
 	explist nel;
 	weights wbody;
 	nel.wident = e;
 	nel.etl = el;
 	old_scale = scale;
-	wbody = weightsv (bro (son (e)), &nel);
+	wbody = weightsv(bro(son(e)), &nel);
 	scale = old_scale;
-	return (wbody);
+	return(wbody);
       };
     case rep_tag: {
-	swl = weightsv (son (e), el);
+	swl = weightsv(son(e), el);
         old_scale = scale;
         if (scale < 1e30)
 		scale = 20*scale;
-	bwl = weightsv (bro (son (e)), el);
+	bwl = weightsv(bro(son(e)), el);
         scale = old_scale;
-	return (add_weights (swl, bwl));
+	return(add_weights(swl, bwl));
       };
     case cond_tag:  {
         old_scale = scale;
         scale = 0.5*scale;
-        swl = weightsv (son (e), el);
+        swl = weightsv(son(e), el);
-	bwl = weightsv (bro (son (e)), el);
+	bwl = weightsv(bro(son(e)), el);
         scale = old_scale;
-	return (add_weights (swl, bwl));
+	return(add_weights(swl, bwl));
       };
     case case_tag:
-      return (weightsv (son (e), el));
+      return(weightsv(son(e), el));
     case compound_tag:
-      return (add_wlist (son (e), 1, el));
+      return(add_wlist(son(e), 1, el));
       /* may use movc3 for component */
     case res_tag:
     case untidy_return_tag:
-      return (weightsv (son (e), el));
+      return(weightsv(son(e), el));
     case asm_tag:
     case apply_tag:
     case apply_general_tag:
     case tail_call_tag:
+      {
-        if (name(sh(e)) != bothd && !builtinproc(e))
+        if (name(sh(e))!= bothd && !builtinproc(e))
-	  markcall (el);
+	  markcall(el);
-	return (add_weights (add_wlist (son (e), 0, el),
+	return(add_weights(add_wlist(son(e), 0, el),
 	      applyregs));
       };
     case ass_tag:
     case assvol_tag: {
       /* may use movc3 for assigned value */
-      unsigned char shn = name (sh (bro (son (e))));
+      unsigned char shn = name(sh(bro(son(e))));
       weights temp;
-      temp = weightsv (bro (son (e)), el);
+      temp = weightsv(bro(son(e)), el);
       if (shn == u64hd || shn == s64hd)
-	markreg1 (el);
+	markreg1(el);
-      return (add_weights (weightsv (son (e), el),
+      return(add_weights(weightsv(son(e), el),
-	    try_mc3 (bro (son (e)), temp, el)
+	    try_mc3(bro(son(e)), temp, el)
-	  )
+	 )
 	);
       };
     case proc_tag:
     case general_proc_tag: {
-	IGNORE weightsv (son (e), (explist *) 0);
+	IGNORE weightsv(son(e), (explist *)0);
-	return (zeros);
+	return(zeros);
       };
     case movecont_tag:
       if (isnooverlap(e))
-        return (add_weights (add_wlist (son (e), 0, el), moveregs));
+        return(add_weights(add_wlist(son(e), 0, el), moveregs));
       else {
         markcall(el);
-        return (add_wlist (son (e), 0, el));
+        return(add_wlist(son(e), 0, el));
       };
     case val_tag:
     case real_tag:
     case env_offset_tag:
-      return (zeros);
+      return(zeros);
     case test_tag:
      {weights wlarg;
       if (name(sh(son(e))) == s64hd || name(sh(son(e))) == u64hd)
 	markreg1 (el);				/* use of reg0 can include reg1 */
-      wlarg = add_wlist (son (e), 0, el);
+      wlarg = add_wlist(son(e), 0, el);
-      return (wlarg);
+      return(wlarg);
      };
     case prof_tag:
       scale = no(e);
       return zeros;
     case alloca_tag:
      {if (checkalloc(e))
-	markreg1 (el);
+	markreg1(el);
-      return (add_wlist (son (e), 0, el));
+      return(add_wlist(son(e), 0, el));
      };
     default:
-      if (sh(e) != nilexp &&
+      if (sh(e)!= nilexp &&
 		(name(sh(e)) == s64hd || name(sh(e)) == u64hd))
 	markreg1 (el);				/* use of reg0 can include reg1 */
-      return (add_wlist (son (e), 1, el));
+      return(add_wlist(son(e), 1, el));
   };
+}
 void comp_weights
-    PROTO_N ( (e) )
-    PROTO_T ( exp e )
+(exp e)
+{
   scale = 1.0;
-  IGNORE weightsv (e, (explist *) 0);
+  IGNORE weightsv(e,(explist *)0);
   return;
+}

Subversion Repositories tendra.SVN

(root)/trunk/src/installers/80x86/common/weights.c – Rev 2 → 7