* src/SDCCsymt.c (initCSupport): fix compile warning on Cygwin

[fw/sdcc] / src / SDCCval.c

diff --git a/src/SDCCval.c b/src/SDCCval.c
index 911cbf35db46598ae356eaa86f4f48034e37c1e8..ca06659834f6c6a070dff2a73a35fd1fef766f98 100644 (file)
--- a/src/SDCCval.c
+++ b/src/SDCCval.c
@@ -29,12 +29,6 @@
 #include <limits.h>
 #include "newalloc.h"
 
-#if defined(__BORLANDC__) || defined(_MSC_VER)
-#define LONG_LONG __int64
-#else
-#define LONG_LONG long long
-#endif
-
 int cNestLevel;
 
 /*-----------------------------------------------------------------*/
@@ -343,31 +337,29 @@ value *cheapestVal (value *val) {
   }
 
   if (SPEC_USIGN(val->type)) {
-    if (uval<=0xff) {
-      SPEC_NOUN(val->type)=V_CHAR;
+    if (uval<=0xffff) {
       SPEC_LONG(val->type)=0;
-    } else {
-      if (uval<=0xffff) {
-       SPEC_LONG(val->type)=0;
+      SPEC_CVAL(val->type).v_uint = uval;
+      if (uval<=0xff) {
+       SPEC_NOUN(val->type)=V_CHAR;
       }
     }
-  } else {
+  } else { // not unsigned
     if (sval<0) {
-      if (sval>=-128) {
-       SPEC_NOUN(val->type)=V_CHAR;
+      if (sval>=-32768) {
        SPEC_LONG(val->type)=0;
-      } else {
-       if (sval>=-32768) {
-         SPEC_LONG(val->type)=0;
+       SPEC_CVAL(val->type).v_int = sval;
+       if (sval>=-128) {
+         SPEC_NOUN(val->type)=V_CHAR;
        }
       }
-    } else {
-      if (sval<=127) {
-       SPEC_NOUN(val->type)=V_CHAR;
+    } else { // sval>=0
+      SPEC_USIGN(val->type)=1;
+      if (sval<=65535) {
        SPEC_LONG(val->type)=0;
-      } else {
-       if (sval<=32767) {
-         SPEC_LONG(val->type)=0;
+       SPEC_CVAL(val->type).v_int = sval;
+       if (sval<=255) {
+         SPEC_NOUN(val->type)=V_CHAR;
        }
       }
     }
@@ -426,7 +418,7 @@ value *constVal (char *s)
   short hex = 0, octal = 0;
   char scanFmt[10];
   int scI = 0;
-  LONG_LONG sval;
+  double dval;
 
   val = newValue ();           /* alloc space for value   */
 
@@ -437,10 +429,6 @@ value *constVal (char *s)
   SPEC_NOUN (val->type) = V_CHAR;
   SPEC_USIGN (val->type) = 1;
 
-  /* set the _long flag if 'lL' is found */
-  if (strchr (s, 'l') || strchr (s, 'L'))
-    SPEC_LONG (val->type) = 1;
-
   hex = ((strchr (s, 'x') || strchr (s, 'X')) ? 1 : 0);
 
   /* set the octal flag   */
@@ -450,44 +438,72 @@ value *constVal (char *s)
   /* create the scan string */
   scanFmt[scI++] = '%';
 
-  scanFmt[scI++] = 'L';
+  scanFmt[scI++] = 'l';
 
   if (octal)
     scanFmt[scI++] = 'o';
   else if (hex)
     scanFmt[scI++] = 'x';
   else
-    scanFmt[scI++] = 'd';
+    scanFmt[scI++] = 'f';
 
   scanFmt[scI++] = '\0';
 
-  sscanf (s, scanFmt, &sval);
+  if (octal || hex) {
+    unsigned long sval;
+    sscanf (s, scanFmt, &sval);
+    dval=sval;
+  } else {
+    sscanf (s, scanFmt, &dval);
+  }
 
-  if (sval<0) { // "-28u" will still be signed and negative
+  /* Setup the flags first */
+  /* set the _long flag if 'lL' is found */
+  if (strchr (s, 'l') || strchr (s, 'L')) {
+    SPEC_NOUN (val->type) = V_INT;
+    SPEC_LONG (val->type) = 1;
+  }
+
+  if (dval<0) { // "-28u" will still be signed and negative
     SPEC_USIGN (val->type) = 0;
-    if (sval<-32768) { // check if we have to promote to long
+    if (dval<-128) { // check if we have to promote to int
       SPEC_NOUN (val->type) = V_INT;
+    }
+    if (dval<-32768) { // check if we have to promote to long int
       SPEC_LONG (val->type) = 1;
-      SPEC_CVAL (val->type).v_long=sval;
-    } else {
-      SPEC_CVAL (val->type).v_int=sval;
-      if (sval<-128) { // check if we have to promote to int
-       SPEC_NOUN (val->type) = V_INT;
-      }
     }
-  } else {
-    if (sval>0xffff) { // check if we have to promote to long
+  } else { // >=0
+    if (dval>0xff) { // check if we have to promote to int
       SPEC_NOUN (val->type) = V_INT;
+    }
+    if (dval>0xffff) { // check if we have to promote to long int
       SPEC_LONG (val->type) = 1;
-      SPEC_CVAL (val->type).v_ulong=sval;
-    } else {
-      SPEC_CVAL (val->type).v_uint=sval;
-      if (sval>0xff) { // check if we have to promote to int
-       SPEC_NOUN (val->type) = V_INT;
-      }
     }
   }
 
+  if (SPEC_LONG (val->type))
+    {
+      if (SPEC_USIGN (val->type))
+        {
+          SPEC_CVAL (val->type).v_ulong = dval;
+        }
+      else
+        {
+          SPEC_CVAL (val->type).v_long = dval;
+        }
+    }
+  else
+    {
+      if (SPEC_USIGN (val->type))
+        {
+          SPEC_CVAL (val->type).v_uint = dval;
+        }
+      else
+        {
+          SPEC_CVAL (val->type).v_int = dval;
+        }
+    }
+
   return val;
 }
 
@@ -825,7 +841,7 @@ charVal (char *s)
        }
     }
   else                         /* not a backslash */
-    SPEC_CVAL (val->type).v_int = (unsigned char)*s;
+    SPEC_CVAL (val->type).v_uint = (unsigned char)*s;
 
   return val;
 }
@@ -843,7 +859,7 @@ valFromType (sym_link * type)
 }
 
 /*------------------------------------------------------------------*/
-/* floatFromVal - value to unsinged integer conversion        */
+/* floatFromVal - value to double float conversion                  */
 /*------------------------------------------------------------------*/
 double 
 floatFromVal (value * val)
@@ -864,23 +880,41 @@ floatFromVal (value * val)
 
   if (SPEC_NOUN (val->etype) == V_FLOAT)
     return (double) SPEC_CVAL (val->etype).v_float;
-  else
+
+  if (SPEC_LONG (val->etype))
     {
-      if (SPEC_LONG (val->etype))
-       {
-         if (SPEC_USIGN (val->etype))
-           return (double) SPEC_CVAL (val->etype).v_ulong;
-         else
-           return (double) SPEC_CVAL (val->etype).v_long;
-       }
+      if (SPEC_USIGN (val->etype))
+       return (double) SPEC_CVAL (val->etype).v_ulong;
       else
-       {
-         if (SPEC_USIGN (val->etype))
-           return (double) SPEC_CVAL (val->etype).v_uint;
-         else
-           return (double) SPEC_CVAL (val->etype).v_int;
-       }
+       return (double) SPEC_CVAL (val->etype).v_long;
     }
+  
+  if (SPEC_NOUN (val->etype) == V_INT) {
+    if (SPEC_USIGN (val->etype))
+      return (double) SPEC_CVAL (val->etype).v_uint;
+    else
+      return (double) SPEC_CVAL (val->etype).v_int;
+  }
+
+  if (SPEC_NOUN (val->etype) == V_CHAR) {
+    if (SPEC_USIGN (val->etype))
+      return (double) (unsigned char)SPEC_CVAL (val->etype).v_uint;
+    else
+      return (double) (signed char)SPEC_CVAL (val->etype).v_int;
+  }
+
+  if (IS_BITVAR(val->etype)) {
+    return (double) SPEC_CVAL (val->etype).v_ulong;
+  }
+
+  if (SPEC_NOUN (val->etype) == V_VOID) {
+    return (double) SPEC_CVAL (val->etype).v_ulong;
+  }
+
+  // we are lost !
+  werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
+         "floatFromVal: unknown value");
+  return 0;
 }
 
 
@@ -910,6 +944,14 @@ valUnaryPM (value * val)
            SPEC_CVAL (val->etype).v_int = -SPEC_CVAL (val->etype).v_int;
        }
     }
+  // -(unsigned 3) now really is signed
+  SPEC_USIGN(val->etype)=0;
+  // -(unsigned char)135 now really is an int
+  if (SPEC_NOUN(val->etype) == V_CHAR) {
+    if (SPEC_CVAL(val->etype).v_int < -128) {
+      SPEC_NOUN(val->etype) = V_INT;
+    }
+  }
   return val;
 }
 
@@ -934,6 +976,8 @@ valComplement (value * val)
       else
        SPEC_CVAL (val->etype).v_int = ~SPEC_CVAL (val->etype).v_int;
     }
+  // ~(unsigned 3) now really is signed
+  SPEC_USIGN(val->etype)=0;
   return val;
 }
 
@@ -977,7 +1021,7 @@ valMult (value * lval, value * rval)
                           IS_FLOAT (rval->etype) ? V_FLOAT : V_INT);
   SPEC_SCLS (val->type) = S_LITERAL;   /* will remain literal */
   SPEC_USIGN (val->type) = (SPEC_USIGN (lval->etype) & SPEC_USIGN (rval->etype));
-  SPEC_LONG (val->type) = (SPEC_LONG (lval->etype) | SPEC_LONG (rval->etype));
+  SPEC_LONG (val->type) = 1;
 
   if (IS_FLOAT (val->type))
     SPEC_CVAL (val->type).v_float = floatFromVal (lval) * floatFromVal (rval);
@@ -992,15 +1036,6 @@ valMult (value * lval, value * rval)
            SPEC_CVAL (val->type).v_long = (long) floatFromVal (lval) *
              (long) floatFromVal (rval);
        }
-      else
-       {
-         if (SPEC_USIGN (val->type))
-           SPEC_CVAL (val->type).v_uint = (unsigned) floatFromVal (lval) *
-             (unsigned) floatFromVal (rval);
-         else
-           SPEC_CVAL (val->type).v_int = (int) floatFromVal (lval) *
-             (int) floatFromVal (rval);
-       }
     }
   return cheapestVal(val);
 }
@@ -1117,7 +1152,7 @@ valPlus (value * lval, value * rval)
     SPEC_USIGN (rval->etype) &&
     (floatFromVal(lval)+floatFromVal(rval))>=0;
     
-  SPEC_LONG (val->type) = (SPEC_LONG (lval->etype) | SPEC_LONG (rval->etype));
+  SPEC_LONG (val->type) = 1;
 
   if (IS_FLOAT (val->type))
     SPEC_CVAL (val->type).v_float = floatFromVal (lval) + floatFromVal (rval);
@@ -1132,16 +1167,6 @@ valPlus (value * lval, value * rval)
            SPEC_CVAL (val->type).v_long = (long) floatFromVal (lval) +
              (long) floatFromVal (rval);
        }
-      else
-       {
-         if (SPEC_USIGN (val->type)) {
-           SPEC_CVAL (val->type).v_uint = (unsigned) floatFromVal (lval) +
-             (unsigned) floatFromVal (rval);
-         } else {
-           SPEC_CVAL (val->type).v_int = (int) floatFromVal (lval) +
-             (int) floatFromVal (rval);
-         }
-       }
     }
   return cheapestVal(val);
 }
@@ -1210,7 +1235,7 @@ valShift (value * lval, value * rval, int lr)
   val->type = val->etype = newIntLink ();
   SPEC_SCLS (val->type) = S_LITERAL;   /* will remain literal */
   SPEC_USIGN (val->type) = (SPEC_USIGN (lval->etype) & SPEC_USIGN (rval->etype));
-  SPEC_LONG (val->type) = (SPEC_LONG (lval->etype) | SPEC_LONG (rval->etype));
+  SPEC_LONG (val->type) = 1;
 
   if (SPEC_LONG (val->type))
     {
@@ -1223,18 +1248,6 @@ valShift (value * lval, value * rval, int lr)
          (long) floatFromVal (lval) << (long) floatFromVal (rval) : \
          (long) floatFromVal (lval) >> (long) floatFromVal (rval);
     }
-  else
-    {
-      if (SPEC_USIGN (val->type)) {
-       SPEC_CVAL (val->type).v_uint = lr ? 
-         (unsigned) floatFromVal (lval) << (unsigned) floatFromVal (rval) :\
-         (unsigned) floatFromVal (lval) >> (unsigned) floatFromVal (rval);
-      } else {
-       SPEC_CVAL (val->type).v_int = lr ?
-         (int) floatFromVal (lval) << (int) floatFromVal (rval) : \
-         (int) floatFromVal (lval) >> (int) floatFromVal (rval);
-      }
-    }
 
   return cheapestVal(val);
 }
@@ -1296,7 +1309,8 @@ valBitwise (value * lval, value * rval, int op)
 
   /* create a new value */
   val = newValue ();
-  val->type = copyLinkChain (lval->type);
+  val->type = copyLinkChain (getSize(rval->type) > getSize(lval->type) ?
+                            rval->type : lval->type);
   val->etype = getSpec (val->type);
 
   switch (op)
@@ -1414,39 +1428,27 @@ valCastLiteral (sym_link * dtype, double fval)
   SPEC_SCLS (val->etype) = S_LITERAL;
   /* if it is not a specifier then we can assume that */
   /* it will be an unsigned long                      */
-  if (!IS_SPEC (val->type))
-    {
+  if (!IS_SPEC (val->type)) {
       SPEC_CVAL (val->etype).v_ulong = (unsigned long) fval;
       return val;
-    }
+  }
 
   if (SPEC_NOUN (val->etype) == V_FLOAT)
-    SPEC_CVAL (val->etype).v_float = fval;
-  else
-    {
-      if (SPEC_LONG (val->etype))
-       {
+      SPEC_CVAL (val->etype).v_float = fval;
+  else {
+      unsigned long l = fval;
+      if (SPEC_LONG (val->etype)) {
          if (SPEC_USIGN (val->etype))
-           SPEC_CVAL (val->etype).v_ulong = (unsigned long) fval;
+             SPEC_CVAL (val->etype).v_ulong = (unsigned long) l;
          else
-           SPEC_CVAL (val->etype).v_long = (long) fval;
-       }
-      else
-       {
+             SPEC_CVAL (val->etype).v_long = (long) l;
+      } else {
          if (SPEC_USIGN (val->etype))
-           if (SPEC_NOUN (val->etype)==V_CHAR) {
-             SPEC_CVAL (val->etype).v_uint = (unsigned char) fval;
-           } else {
-             SPEC_CVAL (val->etype).v_uint = (unsigned int) fval;
-           }
+             SPEC_CVAL (val->etype).v_uint = (unsigned short)l;
          else
-           if (SPEC_NOUN (val->etype)==V_CHAR) {
-             SPEC_CVAL (val->etype).v_int = (char) fval;
-           } else {
-             SPEC_CVAL (val->etype).v_int = (int) fval;
-           }
-       }
-    }
+             SPEC_CVAL (val->etype).v_int = (short)l;
+      }
+  }
   return val;
 }
 
@@ -1456,7 +1458,6 @@ valCastLiteral (sym_link * dtype, double fval)
 int 
 getNelements (sym_link * type, initList * ilist)
 {
-  sym_link *etype = getSpec (type);
   int i;
 
   if (!ilist)
@@ -1467,13 +1468,13 @@ getNelements (sym_link * type, initList * ilist)
 
   /* if type is a character array and there is only one
      (string) initialiser then get the length of the string */
-  if (IS_ARRAY (type) && IS_CHAR (etype) && !ilist->next)
+  if (IS_ARRAY (type) && IS_CHAR (type->next) && !ilist->next)
     {
       ast *iast = ilist->init.node;
       value *v = (iast->type == EX_VALUE ? iast->opval.val : NULL);
       if (!v)
        {
-         werror (W_INIT_WRONG);
+         werror (E_CONST_EXPECTED);
          return 0;
        }
 
@@ -1490,7 +1491,6 @@ getNelements (sym_link * type, initList * ilist)
       i++;
       ilist = ilist->next;
     }
-
   return i;
 }