X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gas%2Fexpr.h;h=c3e617401c4e4d2e4af1680f110fa4f0d60e85b8;hb=ab1ddbcf110a3f1ad45e3a346d2da98ffb833dec;hp=32a16619b1d597fc0ec23fc70e423610cb866c5a;hpb=9de8d8f1848f870605f4e94ffd9d2f1baa005c93;p=deliverable%2Fbinutils-gdb.git diff --git a/gas/expr.h b/gas/expr.h index 32a16619b1..c3e617401c 100644 --- a/gas/expr.h +++ b/gas/expr.h @@ -1,11 +1,11 @@ /* expr.h -> header file for expr.c - Copyright (C) 1987, 92-98, 1999 Free Software Foundation, Inc. + Copyright (C) 1987-2020 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) + 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, @@ -15,8 +15,8 @@ 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. */ /* * By popular demand, we define a struct to represent an expression. @@ -39,8 +39,7 @@ NOTE: This enumeration must match the op_rank array in expr.c. */ -typedef enum -{ +typedef enum { /* An illegal expression. */ O_illegal, /* A nonexistent expression. */ @@ -68,23 +67,23 @@ typedef enum 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. */ + /* (X_add_symbol - X_op_symbol) + X_add_number. */ O_subtract, /* (X_add_symbol == X_op_symbol) + X_add_number. */ O_eq, @@ -104,54 +103,89 @@ typedef enum 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 -{ +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. */ - operatorT X_op; + + /* 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; -/* "result" should be type (expressionS *). */ -#define expression(result) expr (0, result) +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. */ + 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 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 */ +extern char get_symbol_name (char **); +extern char restore_line_pointer (char); +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 *, const char **, unsigned int *); +extern void current_location (expressionS *); + +extern symbolS *expr_build_uconstant (offsetT); +extern symbolS *expr_build_dot (void); + +int resolve_expression (expressionS *); + +extern bfd_boolean literal_prefix_dollar_hex;