diff options
Diffstat (limited to 'gas/expr.h')
| -rw-r--r-- | gas/expr.h | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/gas/expr.h b/gas/expr.h deleted file mode 100644 index e3764092970..00000000000 --- a/gas/expr.h +++ /dev/null @@ -1,163 +0,0 @@ -/* expr.h -> header file for expr.c - Copyright (C) 1987, 92-98, 1999 Free Software Foundation, Inc. - - This file is part of GAS, the GNU Assembler. - - GAS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. - - GAS is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - 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, 59 Temple Place - Suite 330, Boston, MA - 02111-1307, USA. */ - -/* - * By popular demand, we define a struct to represent an expression. - * This will no doubt mutate as expressions become baroque. - * - * Currently, we support expressions like "foo OP bar + 42". In other - * words we permit a (possibly undefined) symbol, a (possibly - * undefined) symbol and the operation used to combine the symbols, - * and an (absolute) augend. RMS says this is so we can have 1-pass - * assembly for any compiler emissions, and a 'case' statement might - * emit 'undefined1 - undefined2'. - * - * The type of an expression used to be stored as a segment. That got - * confusing because it overloaded the concept of a segment. I added - * an operator field, instead. - */ - -/* This is the type of an expression. The operator types are also - used while parsing an expression. - - NOTE: This enumeration must match the op_rank array in expr.c. */ - -typedef enum -{ - /* An illegal expression. */ - O_illegal, - /* A nonexistent expression. */ - O_absent, - /* X_add_number (a constant 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 - generic_floating_point_number. Otherwise the value is in - generic_bignum, and X_add_number is the number of LITTLENUMs in - the value. */ - O_big, - /* (- X_add_symbol) + X_add_number. */ - 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. */ - O_modulus, - /* X_add_symbol << X_op_symbol) + X_add_number. */ - O_left_shift, - /* X_add_symbol >> X_op_symbol) + X_add_number. */ - O_right_shift, - /* X_add_symbol | X_op_symbol) + X_add_number. */ - O_bit_inclusive_or, - /* X_add_symbol |~ X_op_symbol) + X_add_number. */ - O_bit_or_not, - /* X_add_symbol ^ X_op_symbol) + X_add_number. */ - O_bit_exclusive_or, - /* X_add_symbol & X_op_symbol) + X_add_number. */ - O_bit_and, - /* 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_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, - /* this must be the largest value */ - O_max -} operatorT; - -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; -#else - unsigned X_op : 7; -#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; -} 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. */ -extern FLONUM_TYPE generic_floating_point_number; -/* Bignums returned here. */ -extern LITTLENUM_TYPE generic_bignum[]; -/* Number of littlenums in above. */ -#define SIZE_OF_LARGE_NUMBER (20) - -typedef char operator_rankT; - -extern char get_symbol_end PARAMS ((void)); -extern void expr_begin PARAMS ((void)); -extern void expr_set_precedence PARAMS ((void)); -extern segT expr PARAMS ((int rank, expressionS * resultP)); -extern unsigned int get_single_number PARAMS ((void)); -extern symbolS *make_expr_symbol PARAMS ((expressionS * expressionP)); -extern int expr_symbol_where - PARAMS ((symbolS *, char **, unsigned int *)); - -extern symbolS *expr_build_uconstant PARAMS ((offsetT)); -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 */ |