/* expr.h -> header file for expr.c
- Copyright (C) 1987, 1992, 1993 Free Software Foundation, Inc.
+ Copyright 1987, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000
+ Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
GNU General Public License for more details.
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, 675 Mass Ave, Cambridge, MA 02139, USA. */
+ 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. */
/*
* By popular demand, we define a struct to represent an expression.
NOTE: This enumeration must match the op_rank array in expr.c. */
-typedef enum
-{
+typedef enum {
/* An illegal expression. */
O_illegal,
/* A nonexistent expression. */
O_constant,
/* X_add_symbol + X_add_number. */
O_symbol,
+ /* X_add_symbol + X_add_number - the base address of the image. */
+ O_symbol_rva,
/* A register (X_add_number is register number). */
O_register,
/* A big value. If X_add_number is negative or 0, the value is in
O_uminus,
/* (~ X_add_symbol) + X_add_number. */
O_bit_not,
+ /* (! X_add_symbol) + X_add_number. */
+ O_logical_not,
/* (X_add_symbol * X_op_symbol) + X_add_number. */
O_multiply,
/* (X_add_symbol / X_op_symbol) + X_add_number. */
O_divide,
- /* X_add_symbol % X_op_symbol) + X_add_number. */
+ /* (X_add_symbol % X_op_symbol) + X_add_number. */
O_modulus,
- /* X_add_symbol << X_op_symbol) + X_add_number. */
+ /* (X_add_symbol << X_op_symbol) + X_add_number. */
O_left_shift,
- /* X_add_symbol >> X_op_symbol) + X_add_number. */
+ /* (X_add_symbol >> X_op_symbol) + X_add_number. */
O_right_shift,
- /* X_add_symbol | X_op_symbol) + X_add_number. */
+ /* (X_add_symbol | X_op_symbol) + X_add_number. */
O_bit_inclusive_or,
- /* X_add_symbol |~ X_op_symbol) + X_add_number. */
+ /* (X_add_symbol |~ X_op_symbol) + X_add_number. */
O_bit_or_not,
- /* X_add_symbol ^ X_op_symbol) + X_add_number. */
+ /* (X_add_symbol ^ X_op_symbol) + X_add_number. */
O_bit_exclusive_or,
- /* X_add_symbol & X_op_symbol) + X_add_number. */
+ /* (X_add_symbol & X_op_symbol) + X_add_number. */
O_bit_and,
- /* X_add_symbol + X_op_symbol) + X_add_number. */
+ /* (X_add_symbol + X_op_symbol) + X_add_number. */
O_add,
- /* X_add_symbol - X_op_symbol) + X_add_number. */
- O_subtract
+ /* (X_add_symbol - X_op_symbol) + X_add_number. */
+ O_subtract,
+ /* (X_add_symbol == X_op_symbol) + X_add_number. */
+ O_eq,
+ /* (X_add_symbol != X_op_symbol) + X_add_number. */
+ O_ne,
+ /* (X_add_symbol < X_op_symbol) + X_add_number. */
+ O_lt,
+ /* (X_add_symbol <= X_op_symbol) + X_add_number. */
+ O_le,
+ /* (X_add_symbol >= X_op_symbol) + X_add_number. */
+ O_ge,
+ /* (X_add_symbol > X_op_symbol) + X_add_number. */
+ O_gt,
+ /* (X_add_symbol && X_op_symbol) + X_add_number. */
+ O_logical_and,
+ /* (X_add_symbol || X_op_symbol) + X_add_number. */
+ O_logical_or,
+ /* X_op_symbol [ X_add_symbol ] */
+ O_index,
+ /* machine dependent operators */
+ O_md1, O_md2, O_md3, O_md4, O_md5, O_md6, O_md7, O_md8,
+ O_md9, O_md10, O_md11, O_md12, O_md13, O_md14, O_md15, O_md16,
+ O_md17, O_md18, O_md19, O_md20, O_md21, O_md22, O_md23, O_md24,
+ O_md25, O_md26, O_md27, O_md28, O_md29, O_md30, O_md31, O_md32,
+ /* this must be the largest value */
+ O_max
} operatorT;
-typedef struct expressionS
-{
- /* The type of the expression. */
- operatorT X_op;
+typedef struct expressionS {
/* The main symbol. */
- struct symbol *X_add_symbol;
+ symbolS *X_add_symbol;
/* The second symbol, if needed. */
- struct symbol *X_op_symbol;
+ symbolS *X_op_symbol;
/* A number to add. */
offsetT X_add_number;
+
+ /* The type of the expression. We can't assume that an arbitrary
+ compiler can handle a bitfield of enum type. FIXME: We could
+ check this using autoconf. */
+#ifdef __GNUC__
+ operatorT X_op : 8;
+#else
+ unsigned char X_op;
+#endif
+
/* Non-zero if X_add_number should be regarded as unsigned. This is
only valid for O_constant expressions. It is only used when an
O_constant must be extended into a bignum (i.e., it is not used
when performing arithmetic on these values).
- FIXME: This field is not set very reliably.
- If we ever need more flags here, we can make them bitfields. */
- int X_unsigned;
+ FIXME: This field is not set very reliably. */
+ unsigned int X_unsigned : 1;
+
+ /* 7 additional bits can be defined if needed. */
+
+ /* Machine dependent field */
+ unsigned short X_md;
} expressionS;
-/* "result" should be type (expressionS *). */
+/* "result" should be type (expressionS *). */
#define expression(result) expr (0, result)
/* If an expression is O_big, look here for its value. These common
- data may be clobbered whenever expr() is called. */
-/* Flonums returned here. Big enough to hold most precise flonum. */
+ data may be clobbered whenever expr() is called. */
+/* Flonums returned here. Big enough to hold most precise flonum. */
extern FLONUM_TYPE generic_floating_point_number;
-/* Bignums returned here. */
+/* Bignums returned here. */
extern LITTLENUM_TYPE generic_bignum[];
-/* Number of littlenums in above. */
+/* Number of littlenums in above. */
#define SIZE_OF_LARGE_NUMBER (20)
typedef char operator_rankT;
-char get_symbol_end PARAMS ((void));
-segT expr PARAMS ((int rank, expressionS * resultP));
-unsigned int get_single_number PARAMS ((void));
-symbolS *make_expr_symbol PARAMS ((expressionS * expressionP));
+extern char get_symbol_end (void);
+extern void expr_begin (void);
+extern void expr_set_precedence (void);
+extern segT expr (int rank, expressionS * resultP);
+extern unsigned int get_single_number (void);
+extern symbolS *make_expr_symbol (expressionS * expressionP);
+extern int expr_symbol_where (symbolS *, char **, unsigned int *);
-/* end of expr.h */
+extern symbolS *expr_build_uconstant (offsetT);
+extern symbolS *expr_build_unary (operatorT, symbolS *);
+extern symbolS *expr_build_binary (operatorT, symbolS *, symbolS *);
+extern symbolS *expr_build_dot (void);
projects / binutils.git / blobdiff