Fixes involving floating point constants and debugger support

lang/pc/comp/LLlex.c

@@ -454,10 +454,11 @@ again:
 #define REAL_MODE	1
 
 		char buf[NUMSIZE+2];
-		register char *np = buf;
+		register char *np = &buf[1];
 		register int state = INT_MODE;
 		extern char *Salloc();
 
+		buf[0] = '-';
 		do	{
 			if( np <= &buf[NUMSIZE] )
 				*np++ = ch;
@@ -526,7 +527,7 @@ again:
 				lexerror("constant too long");
 			}
 			else	{
-				np = buf;
+				np = &buf[1];
 				while (*np == '0')	/* skip leading zeros */
 					np++;
 				tk->TOK_INT = str2long(np, 10);
@@ -545,16 +546,18 @@ again:
 		/* allocate struct for inverse */
 		tk->TOK_RIV = (struct real *) Malloc(sizeof(struct real));
 		tk->TOK_RIV->r_inverse = tk->tk_data.tk_real;
-
-		/* sign */
-		tk->TOK_RSI = 0;
-		tk->TOK_RIV->r_sign = 1;
+		tk->TOK_RLA = 0;
+		tk->TOK_RIV->r_lab = 0;
 
 		if( np > &buf[NUMSIZE+1] )	{
 			tk->TOK_REL = Salloc("0.0", 4);
+			tk->TOK_RIV->r_real = tk->TOK_REL;
 			lexerror("floating constant too long");
 		}
-		else tk->TOK_REL = Salloc(buf,(unsigned) (np - buf));
+		else {
+			tk->TOK_RIV->r_real = Salloc(buf,(unsigned) (np - buf));
+			tk->TOK_REL = tk->TOK_RIV->r_real + 1;
+		}
 
 		toktype = real_type;
 		return tk->tk_symb = REAL;

lang/pc/comp/LLlex.h

@@ -14,7 +14,6 @@ struct real {
 	char *r_real;			/* string representation of real */
 	struct real *r_inverse;		/* the inverse of this real */
 	label r_lab;			/* data label of real */
-	int r_sign;			/* positive or negative */
 };
 
 /* Token structure. Keep it small, as it is part of a parse-tree node
@@ -41,7 +40,6 @@ struct token	{
 #define TOK_REL	tk_data.tk_real->r_real
 #define TOK_RIV	tk_data.tk_real->r_inverse
 #define TOK_RLA	tk_data.tk_real->r_lab
-#define TOK_RSI	tk_data.tk_real->r_sign
 
 extern struct token dot, aside;
 extern struct type *toktype, *asidetype;

lang/pc/comp/LLmessage.c

@@ -62,11 +62,8 @@ LLmessage(tk)
 						Malloc(sizeof(struct real));
 			dotp->TOK_RIV->r_inverse = dotp->tk_data.tk_real;
 
-			/* sign */
-			dotp->TOK_RSI = 0;
-			dotp->TOK_RIV->r_sign = 1;
-
 			dotp->TOK_REL = Salloc("0.0", 4);
+			dotp->TOK_RIV->r_real = dotp->TOK_REL;
 			toktype = real_type;
 			break;
 		}

lang/pc/comp/code.c

@@ -52,9 +52,11 @@ RomString(nd)
 RomReal(nd)
 	register struct node *nd;
 {
-	C_df_dlb(++data_label);
-	C_rom_fcon(nd->nd_REL, nd->nd_type->tp_size);
-	nd->nd_RLA = nd->nd_RIV->r_lab = data_label;
+	if (! nd->nd_RLA) {
+		C_df_dlb(++data_label);
+		nd->nd_RLA = data_label;
+		C_rom_fcon(nd->nd_REL, nd->nd_type->tp_size);
+	}
 }
 
 BssVar()
@@ -291,10 +293,9 @@ CodeExpr(nd, ds, true_label)
 			C_loc(nd->nd_INT);
 			break;
 		case REAL:
+			RomReal(nd);
 			C_lae_dlb(nd->nd_RLA, (arith) 0);
 			C_loi(tp->tp_size);
-			if( nd->nd_RSI )
-				C_ngf(tp->tp_size);
 			break;
 		case STRING:
 			if( tp->tp_fund == T_CHAR )

lang/pc/comp/expression.g

@@ -45,8 +45,7 @@ Sign(register struct node **pnd;):
 
 UnsignedNumber(register struct node **pnd;):
 	[INTEGER | REAL]	{ *pnd = MkLeaf(Value, &dot);
-				  if( ((*pnd)->nd_type = toktype) == real_type )
-					RomReal(*pnd);
+				  (*pnd)->nd_type = toktype;
 				}
 ;
 

lang/pc/comp/node.H

@@ -37,7 +37,6 @@ struct node {
 #define nd_REL		nd_token.TOK_REL
 #define nd_RLA		nd_token.TOK_RLA
 #define nd_RIV		nd_token.TOK_RIV
-#define nd_RSI		nd_token.TOK_RSI
 };
 
 /* ALLOCDEF "node" 50 */

lang/pc/comp/stab.c

@@ -352,7 +352,7 @@ stb_string(df, kind)
 		case T_ENUMERATION:
 			addc_db_str('e');
 			stb_type(tp, 0);
-			adds_db_str(sprint(buf, ",%ld;", (long) df->enm_val));
+			adds_db_str(sprint(buf, ",%ld;", (long) df->con_const->nd_INT));
 			break;
 		case T_SET: {
 			register int i;