/* expr.h -> header file for expr.c
- Copyright (C) 1987, 92-98, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1987, 92-99, 2000 Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
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_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,
/* this must be the largest value */
O_max
} operatorT;
-typedef struct expressionS
-{
+typedef struct expressionS {
/* The main symbol. */
symbolS *X_add_symbol;
/* The second symbol, if needed. */
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 : 7;
+ operatorT X_op : 8;
#else
- unsigned X_op : 7;
+ 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. */
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;
extern symbolS *expr_build_unary PARAMS ((operatorT, symbolS *));
extern symbolS *expr_build_binary PARAMS ((operatorT, symbolS *, symbolS *));
extern symbolS *expr_build_dot PARAMS ((void));
-
-/* end of expr.h */