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Diffstat (limited to 'binutils-2.24/gas/expr.h')
| -rw-r--r-- | binutils-2.24/gas/expr.h | 189 |
1 files changed, 0 insertions, 189 deletions
diff --git a/binutils-2.24/gas/expr.h b/binutils-2.24/gas/expr.h deleted file mode 100644 index 438ac0dc..00000000 --- a/binutils-2.24/gas/expr.h +++ /dev/null @@ -1,189 +0,0 @@ -/* expr.h -> header file for expr.c - Copyright 1987, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, - 2002, 2003, 2005, 2007, 2009 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 3, 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, 51 Franklin Street - Fifth Floor, Boston, MA - 02110-1301, 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, - /* 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 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 : 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. */ - unsigned int X_unsigned : 1; - /* This is used to implement "word size + 1 bit" arithmetic, so that e.g. - expressions used with .sleb128 directives can use the full range available - for an unsigned word, but can also properly represent all values of a - signed word. */ - unsigned int X_extrabit : 1; - - /* 7 additional bits can be defined if needed. */ - - /* Machine dependent field */ - unsigned short X_md; -} expressionS; - -enum expr_mode -{ - expr_evaluate, - expr_normal, - expr_defer -}; - -/* "result" should be type (expressionS *). */ -#define expression(result) expr (0, result, expr_normal) -#define expression_and_evaluate(result) expr (0, result, expr_evaluate) -#define deferred_expression(result) expr (0, result, expr_defer) - -/* 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 (void); -extern void expr_begin (void); -extern void expr_set_precedence (void); -extern void expr_set_rank (operatorT, operator_rankT); -extern void add_to_result (expressionS *, offsetT, int); -extern void subtract_from_result (expressionS *, offsetT, int); -extern segT expr (int, expressionS *, enum expr_mode); -extern unsigned int get_single_number (void); -extern symbolS *make_expr_symbol (expressionS * expressionP); -extern int expr_symbol_where (symbolS *, char **, unsigned int *); -extern void current_location (expressionS *); - -extern symbolS *expr_build_uconstant (offsetT); -extern symbolS *expr_build_dot (void); - -int resolve_expression (expressionS *); |