/* expr.c -operands, expressions-
Copyright 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005
Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
You should have received a copy of the GNU General Public License
along with GAS; see the file COPYING. If not, write to the Free
- Software Foundation, 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
+ Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+ 02110-1301, USA. */
/* This is really a branch office of as-read.c. I split it out to clearly
distinguish the world of expressions from the world of statements.
return make_expr_symbol (&e);
}
-/* Build an expression for OP s1. */
-
-symbolS *
-expr_build_unary (operatorT op, symbolS *s1)
-{
- expressionS e;
-
- e.X_op = op;
- e.X_add_symbol = s1;
- e.X_add_number = 0;
- return make_expr_symbol (&e);
-}
-
-/* Build an expression for s1 OP s2. */
-
-symbolS *
-expr_build_binary (operatorT op, symbolS *s1, symbolS *s2)
-{
- expressionS e;
-
- e.X_op = op;
- e.X_add_symbol = s1;
- e.X_op_symbol = s2;
- e.X_add_number = 0;
- return make_expr_symbol (&e);
-}
-
/* Build an expression for the current location ('.'). */
symbolS *
0 /* sign. */
};
-/* If nonzero, we've been asked to assemble nan, +inf or -inf. */
-int generic_floating_point_magic;
\f
static void
floating_constant (expressionS *expressionP)
else
{
expressionP->X_op = O_constant;
-#ifdef TARGET_WORD_SIZE
- /* Sign extend NUMBER. */
- number |= (-(number >> (TARGET_WORD_SIZE - 1))) << (TARGET_WORD_SIZE - 1);
-#endif
expressionP->X_add_number = number;
input_line_pointer--; /* Restore following character. */
} /* Really just a number. */
/* expression () will pass trailing whitespace. */
if ((c == '(' && *input_line_pointer != ')')
|| (c == '[' && *input_line_pointer != ']'))
- {
-#ifdef RELAX_PAREN_GROUPING
- if (c != '(')
-#endif
- as_bad (_("missing '%c'"), c == '(' ? ')' : ']');
- }
+ as_bad (_("missing '%c'"), c == '(' ? ')' : ']');
else
input_line_pointer++;
SKIP_WHITESPACE ();
mri_char_constant (expressionP);
break;
- case '+':
- /* Do not accept ++e as +(+e) */
- if (input_line_pointer[1] == '+')
- goto target_op;
- (void) operand (expressionP);
- break;
-
#ifdef TC_M68K
case '"':
/* Double quote is the bitwise not operator in MRI mode. */
goto isname;
case '!':
case '-':
+ case '+':
{
- /* Do not accept --e as -(-e) */
- if (c == '-' && input_line_pointer[1] == '-')
+ /* Do not accept ++e or --e as +(+e) or -(-e)
+ Disabled, since the preprocessor removes whitespace. */
+ if (0 && (c == '-' || c == '+') && *input_line_pointer == c)
goto target_op;
operand (expressionP);
}
else if (c == '~' || c == '"')
expressionP->X_add_number = ~ expressionP->X_add_number;
- else
+ else if (c == '!')
expressionP->X_add_number = ! expressionP->X_add_number;
}
else if (expressionP->X_op == O_big
else
generic_floating_point_number.sign = 'N';
}
+ else if (expressionP->X_op == O_big
+ && expressionP->X_add_number > 0)
+ {
+ int i;
+
+ if (c == '~' || c == '-')
+ {
+ for (i = 0; i < expressionP->X_add_number; ++i)
+ generic_bignum[i] = ~generic_bignum[i];
+ if (c == '-')
+ for (i = 0; i < expressionP->X_add_number; ++i)
+ {
+ generic_bignum[i] += 1;
+ if (generic_bignum[i])
+ break;
+ }
+ }
+ 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;
+ }
+ }
else if (expressionP->X_op != O_illegal
&& expressionP->X_op != O_absent)
{
- expressionP->X_add_symbol = make_expr_symbol (expressionP);
- if (c == '-')
- expressionP->X_op = O_uminus;
- else if (c == '~' || c == '"')
- expressionP->X_op = O_bit_not;
- else
- expressionP->X_op = O_logical_not;
- expressionP->X_add_number = 0;
+ if (c != '+')
+ {
+ expressionP->X_add_symbol = make_expr_symbol (expressionP);
+ if (c == '-')
+ expressionP->X_op = O_uminus;
+ else if (c == '~' || c == '"')
+ expressionP->X_op = O_bit_not;
+ else
+ expressionP->X_op = O_logical_not;
+ expressionP->X_add_number = 0;
+ }
}
else
as_warn (_("Unary operator %c ignored because bad operand follows"),
case '+':
case '-':
- /* Do not allow a++b and a--b to be a + (+b) and a - (-b) */
- if (input_line_pointer[1] != c)
+ /* Do not allow a++b and a--b to be a + (+b) and a - (-b)
+ Disabled, since the preprocessor removes whitespace. */
+ if (1 || input_line_pointer[1] != c)
return op_encoding[c];
return O_illegal;
know (op_right == O_illegal
|| op_rank[(int) op_right] <= op_rank[(int) op_left]);
know ((int) op_left >= (int) O_multiply
- && (int) op_left <= (int) O_logical_or);
+ && (int) op_left <= (int) O_index);
/* input_line_pointer->after right-hand quantity. */
/* left-hand quantity in resultP. */