gas: blackfin: reign in overeager insn flag handling

[deliverable/binutils-gdb.git] / gas / expr.c

diff --git a/gas/expr.c b/gas/expr.c
index fbfdffc675830a62b99478efda1435b6d49a16d2..f050b17ccb2123e68c305570a1ea0575a2363820 100644 (file)
--- a/gas/expr.c
+++ b/gas/expr.c
@@ -45,7 +45,6 @@ static valueT generic_bignum_to_int64 (void);
 #endif
 static void integer_constant (int radix, expressionS * expressionP);
 static void mri_char_constant (expressionS *);
-static void current_location (expressionS *);
 static void clean_up_expression (expressionS * expressionP);
 static segT operand (expressionS *, enum expr_mode);
 static operatorT operatorf (int *);
@@ -695,7 +694,7 @@ mri_char_constant (expressionS *expressionP)
 /* Return an expression representing the current location.  This
    handles the magic symbol `.'.  */
 
-static void
+void
 current_location (expressionS *expressionp)
 {
   if (now_seg == absolute_section)
@@ -1057,6 +1056,15 @@ operand (expressionS *expressionP, enum expr_mode mode)
              {
                for (i = 0; i < expressionP->X_add_number; ++i)
                  generic_bignum[i] = ~generic_bignum[i];
+
+               /* Extend the bignum to at least the size of .octa.  */
+               if (expressionP->X_add_number < SIZE_OF_LARGE_NUMBER)
+                 {
+                   expressionP->X_add_number = SIZE_OF_LARGE_NUMBER;
+                   for (; i < expressionP->X_add_number; ++i)
+                     generic_bignum[i] = ~(LITTLENUM_TYPE) 0;
+                 }
+
                if (c == '-')
                  for (i = 0; i < expressionP->X_add_number; ++i)
                    {
@@ -1067,14 +1075,12 @@ operand (expressionS *expressionP, enum expr_mode mode)
              }
            else if (c == '!')
              {
-               int nonzero = 0;
                for (i = 0; i < expressionP->X_add_number; ++i)
-                 {
-                   if (generic_bignum[i])
-                     nonzero = 1;
-                   generic_bignum[i] = 0;
-                 }
-               generic_bignum[0] = nonzero;
+                 if (generic_bignum[i] != 0)
+                   break;
+               expressionP->X_add_number = i >= expressionP->X_add_number;
+               expressionP->X_op = O_constant;
+               expressionP->X_unsigned = 1;
              }
          }
        else if (expressionP->X_op != O_illegal
@@ -1587,13 +1593,13 @@ operatorf (int *num_chars)
   if (is_name_beginner (c))
     {
       char *name = input_line_pointer;
-      char c = get_symbol_end ();
+      char ec = get_symbol_end ();
 
-      ret = md_operator (name, 2, &c);
+      ret = md_operator (name, 2, &ec);
       switch (ret)
        {
        case O_absent:
-         *input_line_pointer = c;
+         *input_line_pointer = ec;
          input_line_pointer = name;
          break;
        case O_uminus:
@@ -1603,7 +1609,7 @@ operatorf (int *num_chars)
          ret = O_illegal;
          /* FALLTHROUGH */
        default:
-         *input_line_pointer = c;
+         *input_line_pointer = ec;
          *num_chars = input_line_pointer - name;
          input_line_pointer = name;
          return ret;
@@ -1740,6 +1746,7 @@ expr (int rankarg,                /* Larger # is higher rank.  */
 
       input_line_pointer += op_chars;  /* -> after operator.  */
 
+      right.X_md = 0;
       rightseg = expr (op_rank[(int) op_left], &right, mode);
       if (right.X_op == O_absent)
        {
@@ -1962,16 +1969,27 @@ expr (int rankarg,              /* Larger # is higher rank.  */
 
       if (retval != rightseg)
        {
-         if (! SEG_NORMAL (retval))
-           {
-             if (retval != undefined_section || SEG_NORMAL (rightseg))
-               retval = rightseg;
-           }
-         else if (SEG_NORMAL (rightseg)
+         if (retval == undefined_section)
+           ;
+         else if (rightseg == undefined_section)
+           retval = rightseg;
+         else if (retval == expr_section)
+           ;
+         else if (rightseg == expr_section)
+           retval = rightseg;
+         else if (retval == reg_section)
+           ;
+         else if (rightseg == reg_section)
+           retval = rightseg;
+         else if (rightseg == absolute_section)
+           ;
+         else if (retval == absolute_section)
+           retval = rightseg;
 #ifdef DIFF_EXPR_OK
-                  && op_left != O_subtract
+         else if (op_left == O_subtract)
+           ;
 #endif
-                  )
+         else
            as_bad (_("operation combines symbols in different segments"));
        }