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81028ab0e7
from a configuration file (typically including <limits.h>), or to TARGET_CHAR_BIT if CHAR_BIT is not defined. * eval.c (evaluate_subexp): Use new BYTES_TO_EXP_ELEM macro. * eval.c (evaluate_subexp): Add case for OP_BITSTRING. * expprint.c (print_subexp): Use new BYTES_TO_EXP_ELEM macro. * exppritn.c (print_subexp, dump_expression): Add case for OP_BITSTRING. * expression.h (OP_BITSTRING): New expression element type for packed bitstrings. * expression.h (EXP_ELEM_TO_BYTES, BYTES_TO_EXP_ELEM): New macros to convert between number of expression elements and bytes to store that many elements. * i960-tdep.c (leafproc_return): Use new macros to access minimal symbol name and address fields. * m88k-pinsn.c (sprint_address): Use new macros to access minimal symbol name and address fields. * nindy-tdep.c (nindy_frame_chain_valid): Use new macro to access minimal symbol address field. * parse.c (write_exp_elt, write_exp_string, prefixify_expression, parse_exp_1): Use new EXP_ELEM_TO_BYTES macro. * parse.c (write_exp_string, length_of_subexp, prefixify_expression): Use new BYTES_TO_EXP_ELEM macro. * parse.c (write_exp_bitstring): New function to write packed bitstrings into the expression element vector. * parse.c (length_of_subexp, prefixify_subexp): Add case for OP_BITSTRING. * parser-defs.h (struct stoken): Document that it is used for OP_BITSTRING as well as OP_STRING. * parser-defs.h (write_exp_bitstring): Add prototype. **** start-sanitize-chill **** * ch-exp.y (BIT_STRING_LITERAL): Change token type to sval. * ch-exp.y (NUM, PRED, SUCC, ABS, CARD, MAX, MIN, SIZE, UPPER, LOWER, LENGTH): New tokens for keywords. * ch-exp.y (chill_value_built_in_routine_call, mode_argument, upper_lower_argument, length_argument, array_mode_name, string_mode_name, variant_structure_mode_name): New non-terminals and productions. * ch-exp.y (literal): Useful production for BIT_STRING_LITERAL. * ch-exp.y (match_bitstring_literal): New lexer support function to recognize bitstring literals. * ch-exp.y (tokentab6): New token table for 6 character keywords. * ch-exp.y (tokentab5): Add LOWER, UPPER. * ch-exp.y (tokentab4): Add PRED, SUCC, CARD, SIZE. * ch-exp.y (tokentab3): Add NUM, ABS, MIN, MAX. * ch-exp.y (yylex): Check tokentab6. * ch-exp.y (yylex): Call match_bitstring_literal. **** end-sanitize-chill ****
201 lines
5.3 KiB
C
201 lines
5.3 KiB
C
/* Parser definitions for GDB.
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Copyright (C) 1986, 1989, 1990, 1991 Free Software Foundation, Inc.
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Modified from expread.y by the Department of Computer Science at the
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State University of New York at Buffalo.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#if !defined (PARSER_DEFS_H)
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#define PARSER_DEFS_H 1
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struct std_regs {
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char *name;
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int regnum;
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};
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extern struct std_regs std_regs[];
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extern unsigned num_std_regs;
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struct expression *expout;
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int expout_size;
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int expout_ptr;
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/* If this is nonzero, this block is used as the lexical context
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for symbol names. */
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struct block *expression_context_block;
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/* The innermost context required by the stack and register variables
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we've encountered so far. */
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struct block *innermost_block;
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/* The block in which the most recently discovered symbol was found. */
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struct block *block_found;
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/* Number of arguments seen so far in innermost function call. */
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int arglist_len;
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/* Data structure for saving values of arglist_len
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for function calls whose arguments contain other function calls. */
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struct funcall
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{
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struct funcall *next;
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int arglist_len;
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};
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struct funcall *funcall_chain;
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/* A string token, either a char-string or bit-string. Char-strings are
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used, for example, for the names of symbols. */
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struct stoken
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{
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/* Pointer to first byte of char-string or first bit of bit-string */
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char *ptr;
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/* Length of string in bytes for char-string or bits for bit-string */
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int length;
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};
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struct ttype
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{
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struct stoken stoken;
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struct type *type;
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};
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struct symtoken
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{
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struct stoken stoken;
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struct symbol *sym;
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int is_a_field_of_this;
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};
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/* For parsing of complicated types.
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An array should be preceded in the list by the size of the array. */
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enum type_pieces
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{tp_end = -1, tp_pointer, tp_reference, tp_array, tp_function};
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/* The stack can contain either an enum type_pieces or an int. */
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union type_stack_elt {
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enum type_pieces piece;
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int int_val;
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};
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union type_stack_elt *type_stack;
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int type_stack_depth, type_stack_size;
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extern void
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write_exp_elt PARAMS ((union exp_element));
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extern void
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write_exp_elt_opcode PARAMS ((enum exp_opcode));
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extern void
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write_exp_elt_sym PARAMS ((struct symbol *));
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extern void
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write_exp_elt_longcst PARAMS ((LONGEST));
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extern void
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write_exp_elt_dblcst PARAMS ((double));
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extern void
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write_exp_elt_type PARAMS ((struct type *));
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extern void
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write_exp_elt_intern PARAMS ((struct internalvar *));
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extern void
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write_exp_string PARAMS ((struct stoken));
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extern void
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write_exp_bitstring PARAMS ((struct stoken));
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extern void
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start_arglist PARAMS ((void));
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extern int
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end_arglist PARAMS ((void));
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extern void
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free_funcalls PARAMS ((void));
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extern char *
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copy_name PARAMS ((struct stoken));
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extern void
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push_type PARAMS ((enum type_pieces));
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extern void
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push_type_int PARAMS ((int));
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extern enum type_pieces
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pop_type PARAMS ((void));
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extern int
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pop_type_int PARAMS ((void));
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/* During parsing of a C expression, the pointer to the next character
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is in this variable. */
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char *lexptr;
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/* Tokens that refer to names do so with explicit pointer and length,
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so they can share the storage that lexptr is parsing.
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When it is necessary to pass a name to a function that expects
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a null-terminated string, the substring is copied out
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into a block of storage that namecopy points to.
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namecopy is allocated once, guaranteed big enough, for each parsing. */
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char *namecopy;
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/* Current depth in parentheses within the expression. */
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int paren_depth;
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/* Nonzero means stop parsing on first comma (if not within parentheses). */
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int comma_terminates;
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/* These codes indicate operator precedences for expression printing,
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least tightly binding first. */
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/* Adding 1 to a precedence value is done for binary operators,
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on the operand which is more tightly bound, so that operators
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of equal precedence within that operand will get parentheses. */
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/* PREC_HYPER and PREC_ABOVE_COMMA are not the precedence of any operator;
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they are used as the "surrounding precedence" to force
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various kinds of things to be parenthesized. */
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enum precedence
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{ PREC_NULL, PREC_COMMA, PREC_ABOVE_COMMA, PREC_ASSIGN, PREC_LOGICAL_OR,
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PREC_LOGICAL_AND, PREC_BITWISE_IOR, PREC_BITWISE_AND, PREC_BITWISE_XOR,
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PREC_EQUAL, PREC_ORDER, PREC_SHIFT, PREC_ADD, PREC_MUL, PREC_REPEAT,
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PREC_HYPER, PREC_PREFIX, PREC_SUFFIX };
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/* Table mapping opcodes into strings for printing operators
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and precedences of the operators. */
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struct op_print
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{
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char *string;
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enum exp_opcode opcode;
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/* Precedence of operator. These values are used only by comparisons. */
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enum precedence precedence;
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int right_assoc;
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};
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#endif /* PARSER_DEFS_H */
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