4506 lines
128 KiB
C
4506 lines
128 KiB
C
/* Parser for linespec for the GNU debugger, GDB.
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Copyright (C) 1986-2020 Free Software Foundation, Inc.
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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 3 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, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "symtab.h"
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#include "frame.h"
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#include "command.h"
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#include "symfile.h"
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#include "objfiles.h"
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#include "source.h"
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#include "demangle.h"
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#include "value.h"
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#include "completer.h"
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#include "cp-abi.h"
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#include "cp-support.h"
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#include "parser-defs.h"
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#include "block.h"
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#include "objc-lang.h"
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#include "linespec.h"
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#include "language.h"
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#include "interps.h"
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#include "mi/mi-cmds.h"
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#include "target.h"
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#include "arch-utils.h"
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#include <ctype.h>
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#include "cli/cli-utils.h"
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#include "filenames.h"
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#include "ada-lang.h"
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#include "stack.h"
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#include "location.h"
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#include "gdbsupport/function-view.h"
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#include "gdbsupport/def-vector.h"
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#include <algorithm>
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/* An enumeration of the various things a user might attempt to
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complete for a linespec location. */
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enum class linespec_complete_what
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{
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/* Nothing, no possible completion. */
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NOTHING,
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/* A function/method name. Due to ambiguity between
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(gdb) b source[TAB]
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source_file.c
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source_function
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this can also indicate a source filename, iff we haven't seen a
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separate source filename component, as in "b source.c:function". */
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FUNCTION,
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/* A label symbol. E.g., break file.c:function:LABEL. */
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LABEL,
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/* An expression. E.g., "break foo if EXPR", or "break *EXPR". */
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EXPRESSION,
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/* A linespec keyword ("if"/"thread"/"task").
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E.g., "break func threa<tab>". */
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KEYWORD,
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};
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/* An address entry is used to ensure that any given location is only
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added to the result a single time. It holds an address and the
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program space from which the address came. */
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struct address_entry
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{
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struct program_space *pspace;
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CORE_ADDR addr;
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};
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/* A linespec. Elements of this structure are filled in by a parser
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(either parse_linespec or some other function). The structure is
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then converted into SALs by convert_linespec_to_sals. */
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struct linespec
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{
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/* An explicit location describing the SaLs. */
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struct explicit_location explicit_loc;
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/* The list of symtabs to search to which to limit the search. May not
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be NULL. If explicit.SOURCE_FILENAME is NULL (no user-specified
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filename), FILE_SYMTABS should contain one single NULL member. This
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will cause the code to use the default symtab. */
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std::vector<symtab *> *file_symtabs;
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/* A list of matching function symbols and minimal symbols. Both lists
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may be NULL (or empty) if no matching symbols were found. */
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std::vector<block_symbol> *function_symbols;
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std::vector<bound_minimal_symbol> *minimal_symbols;
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/* A structure of matching label symbols and the corresponding
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function symbol in which the label was found. Both may be NULL
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or both must be non-NULL. */
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struct
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{
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std::vector<block_symbol> *label_symbols;
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std::vector<block_symbol> *function_symbols;
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} labels;
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};
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typedef struct linespec *linespec_p;
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/* A canonical linespec represented as a symtab-related string.
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Each entry represents the "SYMTAB:SUFFIX" linespec string.
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SYMTAB can be converted for example by symtab_to_fullname or
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symtab_to_filename_for_display as needed. */
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struct linespec_canonical_name
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{
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/* Remaining text part of the linespec string. */
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char *suffix;
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/* If NULL then SUFFIX is the whole linespec string. */
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struct symtab *symtab;
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};
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/* An instance of this is used to keep all state while linespec
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operates. This instance is passed around as a 'this' pointer to
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the various implementation methods. */
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struct linespec_state
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{
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/* The language in use during linespec processing. */
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const struct language_defn *language;
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/* The program space as seen when the module was entered. */
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struct program_space *program_space;
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/* If not NULL, the search is restricted to just this program
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space. */
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struct program_space *search_pspace;
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/* The default symtab to use, if no other symtab is specified. */
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struct symtab *default_symtab;
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/* The default line to use. */
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int default_line;
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/* The 'funfirstline' value that was passed in to decode_line_1 or
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decode_line_full. */
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int funfirstline;
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/* Nonzero if we are running in 'list' mode; see decode_line_list. */
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int list_mode;
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/* The 'canonical' value passed to decode_line_full, or NULL. */
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struct linespec_result *canonical;
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/* Canonical strings that mirror the std::vector<symtab_and_line> result. */
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struct linespec_canonical_name *canonical_names;
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/* This is a set of address_entry objects which is used to prevent
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duplicate symbols from being entered into the result. */
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htab_t addr_set;
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/* Are we building a linespec? */
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int is_linespec;
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};
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/* This is a helper object that is used when collecting symbols into a
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result. */
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struct collect_info
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{
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/* The linespec object in use. */
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struct linespec_state *state;
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/* A list of symtabs to which to restrict matches. */
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std::vector<symtab *> *file_symtabs;
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/* The result being accumulated. */
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struct
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{
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std::vector<block_symbol> *symbols;
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std::vector<bound_minimal_symbol> *minimal_symbols;
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} result;
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/* Possibly add a symbol to the results. */
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virtual bool add_symbol (block_symbol *bsym);
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};
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bool
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collect_info::add_symbol (block_symbol *bsym)
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{
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/* In list mode, add all matching symbols, regardless of class.
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This allows the user to type "list a_global_variable". */
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if (SYMBOL_CLASS (bsym->symbol) == LOC_BLOCK || this->state->list_mode)
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this->result.symbols->push_back (*bsym);
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/* Continue iterating. */
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return true;
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}
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/* Custom collect_info for symbol_searcher. */
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struct symbol_searcher_collect_info
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: collect_info
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{
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bool add_symbol (block_symbol *bsym) override
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{
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/* Add everything. */
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this->result.symbols->push_back (*bsym);
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/* Continue iterating. */
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return true;
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}
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};
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/* Token types */
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enum ls_token_type
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{
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/* A keyword */
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LSTOKEN_KEYWORD = 0,
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/* A colon "separator" */
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LSTOKEN_COLON,
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/* A string */
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LSTOKEN_STRING,
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/* A number */
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LSTOKEN_NUMBER,
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/* A comma */
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LSTOKEN_COMMA,
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/* EOI (end of input) */
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LSTOKEN_EOI,
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/* Consumed token */
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LSTOKEN_CONSUMED
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};
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typedef enum ls_token_type linespec_token_type;
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/* List of keywords. This is NULL-terminated so that it can be used
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as enum completer. */
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const char * const linespec_keywords[] = { "if", "thread", "task", NULL };
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#define IF_KEYWORD_INDEX 0
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/* A token of the linespec lexer */
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struct ls_token
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{
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/* The type of the token */
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linespec_token_type type;
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/* Data for the token */
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union
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{
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/* A string, given as a stoken */
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struct stoken string;
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/* A keyword */
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const char *keyword;
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} data;
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};
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typedef struct ls_token linespec_token;
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#define LS_TOKEN_STOKEN(TOK) (TOK).data.string
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#define LS_TOKEN_KEYWORD(TOK) (TOK).data.keyword
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/* An instance of the linespec parser. */
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struct linespec_parser
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{
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linespec_parser (int flags, const struct language_defn *language,
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struct program_space *search_pspace,
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struct symtab *default_symtab,
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int default_line,
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struct linespec_result *canonical);
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~linespec_parser ();
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DISABLE_COPY_AND_ASSIGN (linespec_parser);
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/* Lexer internal data */
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struct
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{
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/* Save head of input stream. */
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const char *saved_arg;
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/* Head of the input stream. */
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const char *stream;
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#define PARSER_STREAM(P) ((P)->lexer.stream)
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/* The current token. */
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linespec_token current;
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} lexer {};
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/* Is the entire linespec quote-enclosed? */
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int is_quote_enclosed = 0;
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/* The state of the parse. */
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struct linespec_state state {};
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#define PARSER_STATE(PPTR) (&(PPTR)->state)
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/* The result of the parse. */
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struct linespec result {};
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#define PARSER_RESULT(PPTR) (&(PPTR)->result)
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/* What the parser believes the current word point should complete
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to. */
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linespec_complete_what complete_what = linespec_complete_what::NOTHING;
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/* The completion word point. The parser advances this as it skips
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tokens. At some point the input string will end or parsing will
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fail, and then we attempt completion at the captured completion
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word point, interpreting the string at completion_word as
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COMPLETE_WHAT. */
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const char *completion_word = nullptr;
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/* If the current token was a quoted string, then this is the
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quoting character (either " or '). */
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int completion_quote_char = 0;
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/* If the current token was a quoted string, then this points at the
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end of the quoted string. */
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const char *completion_quote_end = nullptr;
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/* If parsing for completion, then this points at the completion
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tracker. Otherwise, this is NULL. */
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struct completion_tracker *completion_tracker = nullptr;
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};
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/* A convenience macro for accessing the explicit location result of
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the parser. */
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#define PARSER_EXPLICIT(PPTR) (&PARSER_RESULT ((PPTR))->explicit_loc)
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/* Prototypes for local functions. */
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static void iterate_over_file_blocks
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(struct symtab *symtab, const lookup_name_info &name,
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domain_enum domain,
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gdb::function_view<symbol_found_callback_ftype> callback);
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static void initialize_defaults (struct symtab **default_symtab,
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int *default_line);
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CORE_ADDR linespec_expression_to_pc (const char **exp_ptr);
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static std::vector<symtab_and_line> decode_objc (struct linespec_state *self,
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linespec_p ls,
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const char *arg);
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static std::vector<symtab *> symtabs_from_filename
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(const char *, struct program_space *pspace);
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static std::vector<block_symbol> *find_label_symbols
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(struct linespec_state *self, std::vector<block_symbol> *function_symbols,
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std::vector<block_symbol> *label_funcs_ret, const char *name,
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bool completion_mode = false);
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static void find_linespec_symbols (struct linespec_state *self,
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std::vector<symtab *> *file_symtabs,
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const char *name,
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symbol_name_match_type name_match_type,
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std::vector<block_symbol> *symbols,
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std::vector<bound_minimal_symbol> *minsyms);
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static struct line_offset
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linespec_parse_variable (struct linespec_state *self,
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const char *variable);
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static int symbol_to_sal (struct symtab_and_line *result,
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int funfirstline, struct symbol *sym);
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static void add_matching_symbols_to_info (const char *name,
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symbol_name_match_type name_match_type,
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enum search_domain search_domain,
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struct collect_info *info,
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struct program_space *pspace);
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static void add_all_symbol_names_from_pspace
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(struct collect_info *info, struct program_space *pspace,
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const std::vector<const char *> &names, enum search_domain search_domain);
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static std::vector<symtab *>
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collect_symtabs_from_filename (const char *file,
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struct program_space *pspace);
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static std::vector<symtab_and_line> decode_digits_ordinary
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(struct linespec_state *self,
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linespec_p ls,
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int line,
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linetable_entry **best_entry);
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static std::vector<symtab_and_line> decode_digits_list_mode
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(struct linespec_state *self,
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linespec_p ls,
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struct symtab_and_line val);
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static void minsym_found (struct linespec_state *self, struct objfile *objfile,
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struct minimal_symbol *msymbol,
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std::vector<symtab_and_line> *result);
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static bool compare_symbols (const block_symbol &a, const block_symbol &b);
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static bool compare_msymbols (const bound_minimal_symbol &a,
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const bound_minimal_symbol &b);
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/* Permitted quote characters for the parser. This is different from the
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completer's quote characters to allow backward compatibility with the
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previous parser. */
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static const char *const linespec_quote_characters = "\"\'";
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/* Lexer functions. */
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/* Lex a number from the input in PARSER. This only supports
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decimal numbers.
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Return true if input is decimal numbers. Return false if not. */
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static int
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linespec_lexer_lex_number (linespec_parser *parser, linespec_token *tokenp)
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{
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tokenp->type = LSTOKEN_NUMBER;
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LS_TOKEN_STOKEN (*tokenp).length = 0;
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LS_TOKEN_STOKEN (*tokenp).ptr = PARSER_STREAM (parser);
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/* Keep any sign at the start of the stream. */
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if (*PARSER_STREAM (parser) == '+' || *PARSER_STREAM (parser) == '-')
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{
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++LS_TOKEN_STOKEN (*tokenp).length;
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++(PARSER_STREAM (parser));
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}
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while (isdigit (*PARSER_STREAM (parser)))
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{
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++LS_TOKEN_STOKEN (*tokenp).length;
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++(PARSER_STREAM (parser));
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}
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/* If the next character in the input buffer is not a space, comma,
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quote, or colon, this input does not represent a number. */
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if (*PARSER_STREAM (parser) != '\0'
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&& !isspace (*PARSER_STREAM (parser)) && *PARSER_STREAM (parser) != ','
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&& *PARSER_STREAM (parser) != ':'
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&& !strchr (linespec_quote_characters, *PARSER_STREAM (parser)))
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{
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PARSER_STREAM (parser) = LS_TOKEN_STOKEN (*tokenp).ptr;
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return 0;
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}
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return 1;
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}
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|
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/* See linespec.h. */
|
||
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const char *
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linespec_lexer_lex_keyword (const char *p)
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{
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int i;
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if (p != NULL)
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{
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for (i = 0; linespec_keywords[i] != NULL; ++i)
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{
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int len = strlen (linespec_keywords[i]);
|
||
|
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/* If P begins with one of the keywords and the next
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character is whitespace, we may have found a keyword.
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It is only a keyword if it is not followed by another
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keyword. */
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if (strncmp (p, linespec_keywords[i], len) == 0
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&& isspace (p[len]))
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{
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int j;
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/* Special case: "if" ALWAYS stops the lexer, since it
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is not possible to predict what is going to appear in
|
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the condition, which can only be parsed after SaLs have
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been found. */
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if (i != IF_KEYWORD_INDEX)
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{
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p += len;
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p = skip_spaces (p);
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for (j = 0; linespec_keywords[j] != NULL; ++j)
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{
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int nextlen = strlen (linespec_keywords[j]);
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if (strncmp (p, linespec_keywords[j], nextlen) == 0
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&& isspace (p[nextlen]))
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return NULL;
|
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}
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}
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return linespec_keywords[i];
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}
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}
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}
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return NULL;
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||
}
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||
|
||
/* See description in linespec.h. */
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||
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int
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||
is_ada_operator (const char *string)
|
||
{
|
||
const struct ada_opname_map *mapping;
|
||
|
||
for (mapping = ada_opname_table;
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||
mapping->encoded != NULL
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&& !startswith (string, mapping->decoded); ++mapping)
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;
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return mapping->decoded == NULL ? 0 : strlen (mapping->decoded);
|
||
}
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|
||
/* Find QUOTE_CHAR in STRING, accounting for the ':' terminal. Return
|
||
the location of QUOTE_CHAR, or NULL if not found. */
|
||
|
||
static const char *
|
||
skip_quote_char (const char *string, char quote_char)
|
||
{
|
||
const char *p, *last;
|
||
|
||
p = last = find_toplevel_char (string, quote_char);
|
||
while (p && *p != '\0' && *p != ':')
|
||
{
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||
p = find_toplevel_char (p, quote_char);
|
||
if (p != NULL)
|
||
last = p++;
|
||
}
|
||
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return last;
|
||
}
|
||
|
||
/* Make a writable copy of the string given in TOKEN, trimming
|
||
any trailing whitespace. */
|
||
|
||
static gdb::unique_xmalloc_ptr<char>
|
||
copy_token_string (linespec_token token)
|
||
{
|
||
const char *str, *s;
|
||
|
||
if (token.type == LSTOKEN_KEYWORD)
|
||
return make_unique_xstrdup (LS_TOKEN_KEYWORD (token));
|
||
|
||
str = LS_TOKEN_STOKEN (token).ptr;
|
||
s = remove_trailing_whitespace (str, str + LS_TOKEN_STOKEN (token).length);
|
||
|
||
return gdb::unique_xmalloc_ptr<char> (savestring (str, s - str));
|
||
}
|
||
|
||
/* Does P represent the end of a quote-enclosed linespec? */
|
||
|
||
static int
|
||
is_closing_quote_enclosed (const char *p)
|
||
{
|
||
if (strchr (linespec_quote_characters, *p))
|
||
++p;
|
||
p = skip_spaces ((char *) p);
|
||
return (*p == '\0' || linespec_lexer_lex_keyword (p));
|
||
}
|
||
|
||
/* Find the end of the parameter list that starts with *INPUT.
|
||
This helper function assists with lexing string segments
|
||
which might contain valid (non-terminating) commas. */
|
||
|
||
static const char *
|
||
find_parameter_list_end (const char *input)
|
||
{
|
||
char end_char, start_char;
|
||
int depth;
|
||
const char *p;
|
||
|
||
start_char = *input;
|
||
if (start_char == '(')
|
||
end_char = ')';
|
||
else if (start_char == '<')
|
||
end_char = '>';
|
||
else
|
||
return NULL;
|
||
|
||
p = input;
|
||
depth = 0;
|
||
while (*p)
|
||
{
|
||
if (*p == start_char)
|
||
++depth;
|
||
else if (*p == end_char)
|
||
{
|
||
if (--depth == 0)
|
||
{
|
||
++p;
|
||
break;
|
||
}
|
||
}
|
||
++p;
|
||
}
|
||
|
||
return p;
|
||
}
|
||
|
||
/* If the [STRING, STRING_LEN) string ends with what looks like a
|
||
keyword, return the keyword start offset in STRING. Return -1
|
||
otherwise. */
|
||
|
||
static size_t
|
||
string_find_incomplete_keyword_at_end (const char * const *keywords,
|
||
const char *string, size_t string_len)
|
||
{
|
||
const char *end = string + string_len;
|
||
const char *p = end;
|
||
|
||
while (p > string && *p != ' ')
|
||
--p;
|
||
if (p > string)
|
||
{
|
||
p++;
|
||
size_t len = end - p;
|
||
for (size_t i = 0; keywords[i] != NULL; ++i)
|
||
if (strncmp (keywords[i], p, len) == 0)
|
||
return p - string;
|
||
}
|
||
|
||
return -1;
|
||
}
|
||
|
||
/* Lex a string from the input in PARSER. */
|
||
|
||
static linespec_token
|
||
linespec_lexer_lex_string (linespec_parser *parser)
|
||
{
|
||
linespec_token token;
|
||
const char *start = PARSER_STREAM (parser);
|
||
|
||
token.type = LSTOKEN_STRING;
|
||
|
||
/* If the input stream starts with a quote character, skip to the next
|
||
quote character, regardless of the content. */
|
||
if (strchr (linespec_quote_characters, *PARSER_STREAM (parser)))
|
||
{
|
||
const char *end;
|
||
char quote_char = *PARSER_STREAM (parser);
|
||
|
||
/* Special case: Ada operators. */
|
||
if (PARSER_STATE (parser)->language->la_language == language_ada
|
||
&& quote_char == '\"')
|
||
{
|
||
int len = is_ada_operator (PARSER_STREAM (parser));
|
||
|
||
if (len != 0)
|
||
{
|
||
/* The input is an Ada operator. Return the quoted string
|
||
as-is. */
|
||
LS_TOKEN_STOKEN (token).ptr = PARSER_STREAM (parser);
|
||
LS_TOKEN_STOKEN (token).length = len;
|
||
PARSER_STREAM (parser) += len;
|
||
return token;
|
||
}
|
||
|
||
/* The input does not represent an Ada operator -- fall through
|
||
to normal quoted string handling. */
|
||
}
|
||
|
||
/* Skip past the beginning quote. */
|
||
++(PARSER_STREAM (parser));
|
||
|
||
/* Mark the start of the string. */
|
||
LS_TOKEN_STOKEN (token).ptr = PARSER_STREAM (parser);
|
||
|
||
/* Skip to the ending quote. */
|
||
end = skip_quote_char (PARSER_STREAM (parser), quote_char);
|
||
|
||
/* This helps the completer mode decide whether we have a
|
||
complete string. */
|
||
parser->completion_quote_char = quote_char;
|
||
parser->completion_quote_end = end;
|
||
|
||
/* Error if the input did not terminate properly, unless in
|
||
completion mode. */
|
||
if (end == NULL)
|
||
{
|
||
if (parser->completion_tracker == NULL)
|
||
error (_("unmatched quote"));
|
||
|
||
/* In completion mode, we'll try to complete the incomplete
|
||
token. */
|
||
token.type = LSTOKEN_STRING;
|
||
while (*PARSER_STREAM (parser) != '\0')
|
||
PARSER_STREAM (parser)++;
|
||
LS_TOKEN_STOKEN (token).length = PARSER_STREAM (parser) - 1 - start;
|
||
}
|
||
else
|
||
{
|
||
/* Skip over the ending quote and mark the length of the string. */
|
||
PARSER_STREAM (parser) = (char *) ++end;
|
||
LS_TOKEN_STOKEN (token).length = PARSER_STREAM (parser) - 2 - start;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
const char *p;
|
||
|
||
/* Otherwise, only identifier characters are permitted.
|
||
Spaces are the exception. In general, we keep spaces,
|
||
but only if the next characters in the input do not resolve
|
||
to one of the keywords.
|
||
|
||
This allows users to forgo quoting CV-qualifiers, template arguments,
|
||
and similar common language constructs. */
|
||
|
||
while (1)
|
||
{
|
||
if (isspace (*PARSER_STREAM (parser)))
|
||
{
|
||
p = skip_spaces (PARSER_STREAM (parser));
|
||
/* When we get here we know we've found something followed by
|
||
a space (we skip over parens and templates below).
|
||
So if we find a keyword now, we know it is a keyword and not,
|
||
say, a function name. */
|
||
if (linespec_lexer_lex_keyword (p) != NULL)
|
||
{
|
||
LS_TOKEN_STOKEN (token).ptr = start;
|
||
LS_TOKEN_STOKEN (token).length
|
||
= PARSER_STREAM (parser) - start;
|
||
return token;
|
||
}
|
||
|
||
/* Advance past the whitespace. */
|
||
PARSER_STREAM (parser) = p;
|
||
}
|
||
|
||
/* If the next character is EOI or (single) ':', the
|
||
string is complete; return the token. */
|
||
if (*PARSER_STREAM (parser) == 0)
|
||
{
|
||
LS_TOKEN_STOKEN (token).ptr = start;
|
||
LS_TOKEN_STOKEN (token).length = PARSER_STREAM (parser) - start;
|
||
return token;
|
||
}
|
||
else if (PARSER_STREAM (parser)[0] == ':')
|
||
{
|
||
/* Do not tokenize the C++ scope operator. */
|
||
if (PARSER_STREAM (parser)[1] == ':')
|
||
++(PARSER_STREAM (parser));
|
||
|
||
/* Do not tokenize ABI tags such as "[abi:cxx11]". */
|
||
else if (PARSER_STREAM (parser) - start > 4
|
||
&& startswith (PARSER_STREAM (parser) - 4, "[abi"))
|
||
{
|
||
/* Nothing. */
|
||
}
|
||
|
||
/* Do not tokenify if the input length so far is one
|
||
(i.e, a single-letter drive name) and the next character
|
||
is a directory separator. This allows Windows-style
|
||
paths to be recognized as filenames without quoting it. */
|
||
else if ((PARSER_STREAM (parser) - start) != 1
|
||
|| !IS_DIR_SEPARATOR (PARSER_STREAM (parser)[1]))
|
||
{
|
||
LS_TOKEN_STOKEN (token).ptr = start;
|
||
LS_TOKEN_STOKEN (token).length
|
||
= PARSER_STREAM (parser) - start;
|
||
return token;
|
||
}
|
||
}
|
||
/* Special case: permit quote-enclosed linespecs. */
|
||
else if (parser->is_quote_enclosed
|
||
&& strchr (linespec_quote_characters,
|
||
*PARSER_STREAM (parser))
|
||
&& is_closing_quote_enclosed (PARSER_STREAM (parser)))
|
||
{
|
||
LS_TOKEN_STOKEN (token).ptr = start;
|
||
LS_TOKEN_STOKEN (token).length = PARSER_STREAM (parser) - start;
|
||
return token;
|
||
}
|
||
/* Because commas may terminate a linespec and appear in
|
||
the middle of valid string input, special cases for
|
||
'<' and '(' are necessary. */
|
||
else if (*PARSER_STREAM (parser) == '<'
|
||
|| *PARSER_STREAM (parser) == '(')
|
||
{
|
||
/* Don't interpret 'operator<' / 'operator<<' as a
|
||
template parameter list though. */
|
||
if (*PARSER_STREAM (parser) == '<'
|
||
&& (PARSER_STATE (parser)->language->la_language
|
||
== language_cplus)
|
||
&& (PARSER_STREAM (parser) - start) >= CP_OPERATOR_LEN)
|
||
{
|
||
const char *op = PARSER_STREAM (parser);
|
||
|
||
while (op > start && isspace (op[-1]))
|
||
op--;
|
||
if (op - start >= CP_OPERATOR_LEN)
|
||
{
|
||
op -= CP_OPERATOR_LEN;
|
||
if (strncmp (op, CP_OPERATOR_STR, CP_OPERATOR_LEN) == 0
|
||
&& (op == start
|
||
|| !(isalnum (op[-1]) || op[-1] == '_')))
|
||
{
|
||
/* This is an operator name. Keep going. */
|
||
++(PARSER_STREAM (parser));
|
||
if (*PARSER_STREAM (parser) == '<')
|
||
++(PARSER_STREAM (parser));
|
||
continue;
|
||
}
|
||
}
|
||
}
|
||
|
||
const char *end = find_parameter_list_end (PARSER_STREAM (parser));
|
||
PARSER_STREAM (parser) = end;
|
||
|
||
/* Don't loop around to the normal \0 case above because
|
||
we don't want to misinterpret a potential keyword at
|
||
the end of the token when the string isn't
|
||
"()<>"-balanced. This handles "b
|
||
function(thread<tab>" in completion mode. */
|
||
if (*end == '\0')
|
||
{
|
||
LS_TOKEN_STOKEN (token).ptr = start;
|
||
LS_TOKEN_STOKEN (token).length
|
||
= PARSER_STREAM (parser) - start;
|
||
return token;
|
||
}
|
||
else
|
||
continue;
|
||
}
|
||
/* Commas are terminators, but not if they are part of an
|
||
operator name. */
|
||
else if (*PARSER_STREAM (parser) == ',')
|
||
{
|
||
if ((PARSER_STATE (parser)->language->la_language
|
||
== language_cplus)
|
||
&& (PARSER_STREAM (parser) - start) > CP_OPERATOR_LEN)
|
||
{
|
||
const char *op = strstr (start, CP_OPERATOR_STR);
|
||
|
||
if (op != NULL && is_operator_name (op))
|
||
{
|
||
/* This is an operator name. Keep going. */
|
||
++(PARSER_STREAM (parser));
|
||
continue;
|
||
}
|
||
}
|
||
|
||
/* Comma terminates the string. */
|
||
LS_TOKEN_STOKEN (token).ptr = start;
|
||
LS_TOKEN_STOKEN (token).length = PARSER_STREAM (parser) - start;
|
||
return token;
|
||
}
|
||
|
||
/* Advance the stream. */
|
||
gdb_assert (*(PARSER_STREAM (parser)) != '\0');
|
||
++(PARSER_STREAM (parser));
|
||
}
|
||
}
|
||
|
||
return token;
|
||
}
|
||
|
||
/* Lex a single linespec token from PARSER. */
|
||
|
||
static linespec_token
|
||
linespec_lexer_lex_one (linespec_parser *parser)
|
||
{
|
||
const char *keyword;
|
||
|
||
if (parser->lexer.current.type == LSTOKEN_CONSUMED)
|
||
{
|
||
/* Skip any whitespace. */
|
||
PARSER_STREAM (parser) = skip_spaces (PARSER_STREAM (parser));
|
||
|
||
/* Check for a keyword, they end the linespec. */
|
||
keyword = linespec_lexer_lex_keyword (PARSER_STREAM (parser));
|
||
if (keyword != NULL)
|
||
{
|
||
parser->lexer.current.type = LSTOKEN_KEYWORD;
|
||
LS_TOKEN_KEYWORD (parser->lexer.current) = keyword;
|
||
/* We do not advance the stream here intentionally:
|
||
we would like lexing to stop when a keyword is seen.
|
||
|
||
PARSER_STREAM (parser) += strlen (keyword); */
|
||
|
||
return parser->lexer.current;
|
||
}
|
||
|
||
/* Handle other tokens. */
|
||
switch (*PARSER_STREAM (parser))
|
||
{
|
||
case 0:
|
||
parser->lexer.current.type = LSTOKEN_EOI;
|
||
break;
|
||
|
||
case '+': case '-':
|
||
case '0': case '1': case '2': case '3': case '4':
|
||
case '5': case '6': case '7': case '8': case '9':
|
||
if (!linespec_lexer_lex_number (parser, &(parser->lexer.current)))
|
||
parser->lexer.current = linespec_lexer_lex_string (parser);
|
||
break;
|
||
|
||
case ':':
|
||
/* If we have a scope operator, lex the input as a string.
|
||
Otherwise, return LSTOKEN_COLON. */
|
||
if (PARSER_STREAM (parser)[1] == ':')
|
||
parser->lexer.current = linespec_lexer_lex_string (parser);
|
||
else
|
||
{
|
||
parser->lexer.current.type = LSTOKEN_COLON;
|
||
++(PARSER_STREAM (parser));
|
||
}
|
||
break;
|
||
|
||
case '\'': case '\"':
|
||
/* Special case: permit quote-enclosed linespecs. */
|
||
if (parser->is_quote_enclosed
|
||
&& is_closing_quote_enclosed (PARSER_STREAM (parser)))
|
||
{
|
||
++(PARSER_STREAM (parser));
|
||
parser->lexer.current.type = LSTOKEN_EOI;
|
||
}
|
||
else
|
||
parser->lexer.current = linespec_lexer_lex_string (parser);
|
||
break;
|
||
|
||
case ',':
|
||
parser->lexer.current.type = LSTOKEN_COMMA;
|
||
LS_TOKEN_STOKEN (parser->lexer.current).ptr
|
||
= PARSER_STREAM (parser);
|
||
LS_TOKEN_STOKEN (parser->lexer.current).length = 1;
|
||
++(PARSER_STREAM (parser));
|
||
break;
|
||
|
||
default:
|
||
/* If the input is not a number, it must be a string.
|
||
[Keywords were already considered above.] */
|
||
parser->lexer.current = linespec_lexer_lex_string (parser);
|
||
break;
|
||
}
|
||
}
|
||
|
||
return parser->lexer.current;
|
||
}
|
||
|
||
/* Consume the current token and return the next token in PARSER's
|
||
input stream. Also advance the completion word for completion
|
||
mode. */
|
||
|
||
static linespec_token
|
||
linespec_lexer_consume_token (linespec_parser *parser)
|
||
{
|
||
gdb_assert (parser->lexer.current.type != LSTOKEN_EOI);
|
||
|
||
bool advance_word = (parser->lexer.current.type != LSTOKEN_STRING
|
||
|| *PARSER_STREAM (parser) != '\0');
|
||
|
||
/* If we're moving past a string to some other token, it must be the
|
||
quote was terminated. */
|
||
if (parser->completion_quote_char)
|
||
{
|
||
gdb_assert (parser->lexer.current.type == LSTOKEN_STRING);
|
||
|
||
/* If the string was the last (non-EOI) token, we're past the
|
||
quote, but remember that for later. */
|
||
if (*PARSER_STREAM (parser) != '\0')
|
||
{
|
||
parser->completion_quote_char = '\0';
|
||
parser->completion_quote_end = NULL;;
|
||
}
|
||
}
|
||
|
||
parser->lexer.current.type = LSTOKEN_CONSUMED;
|
||
linespec_lexer_lex_one (parser);
|
||
|
||
if (parser->lexer.current.type == LSTOKEN_STRING)
|
||
{
|
||
/* Advance the completion word past a potential initial
|
||
quote-char. */
|
||
parser->completion_word = LS_TOKEN_STOKEN (parser->lexer.current).ptr;
|
||
}
|
||
else if (advance_word)
|
||
{
|
||
/* Advance the completion word past any whitespace. */
|
||
parser->completion_word = PARSER_STREAM (parser);
|
||
}
|
||
|
||
return parser->lexer.current;
|
||
}
|
||
|
||
/* Return the next token without consuming the current token. */
|
||
|
||
static linespec_token
|
||
linespec_lexer_peek_token (linespec_parser *parser)
|
||
{
|
||
linespec_token next;
|
||
const char *saved_stream = PARSER_STREAM (parser);
|
||
linespec_token saved_token = parser->lexer.current;
|
||
int saved_completion_quote_char = parser->completion_quote_char;
|
||
const char *saved_completion_quote_end = parser->completion_quote_end;
|
||
const char *saved_completion_word = parser->completion_word;
|
||
|
||
next = linespec_lexer_consume_token (parser);
|
||
PARSER_STREAM (parser) = saved_stream;
|
||
parser->lexer.current = saved_token;
|
||
parser->completion_quote_char = saved_completion_quote_char;
|
||
parser->completion_quote_end = saved_completion_quote_end;
|
||
parser->completion_word = saved_completion_word;
|
||
return next;
|
||
}
|
||
|
||
/* Helper functions. */
|
||
|
||
/* Add SAL to SALS, and also update SELF->CANONICAL_NAMES to reflect
|
||
the new sal, if needed. If not NULL, SYMNAME is the name of the
|
||
symbol to use when constructing the new canonical name.
|
||
|
||
If LITERAL_CANONICAL is non-zero, SYMNAME will be used as the
|
||
canonical name for the SAL. */
|
||
|
||
static void
|
||
add_sal_to_sals (struct linespec_state *self,
|
||
std::vector<symtab_and_line> *sals,
|
||
struct symtab_and_line *sal,
|
||
const char *symname, int literal_canonical)
|
||
{
|
||
sals->push_back (*sal);
|
||
|
||
if (self->canonical)
|
||
{
|
||
struct linespec_canonical_name *canonical;
|
||
|
||
self->canonical_names = XRESIZEVEC (struct linespec_canonical_name,
|
||
self->canonical_names,
|
||
sals->size ());
|
||
canonical = &self->canonical_names[sals->size () - 1];
|
||
if (!literal_canonical && sal->symtab)
|
||
{
|
||
symtab_to_fullname (sal->symtab);
|
||
|
||
/* Note that the filter doesn't have to be a valid linespec
|
||
input. We only apply the ":LINE" treatment to Ada for
|
||
the time being. */
|
||
if (symname != NULL && sal->line != 0
|
||
&& self->language->la_language == language_ada)
|
||
canonical->suffix = xstrprintf ("%s:%d", symname, sal->line);
|
||
else if (symname != NULL)
|
||
canonical->suffix = xstrdup (symname);
|
||
else
|
||
canonical->suffix = xstrprintf ("%d", sal->line);
|
||
canonical->symtab = sal->symtab;
|
||
}
|
||
else
|
||
{
|
||
if (symname != NULL)
|
||
canonical->suffix = xstrdup (symname);
|
||
else
|
||
canonical->suffix = xstrdup ("<unknown>");
|
||
canonical->symtab = NULL;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* A hash function for address_entry. */
|
||
|
||
static hashval_t
|
||
hash_address_entry (const void *p)
|
||
{
|
||
const struct address_entry *aep = (const struct address_entry *) p;
|
||
hashval_t hash;
|
||
|
||
hash = iterative_hash_object (aep->pspace, 0);
|
||
return iterative_hash_object (aep->addr, hash);
|
||
}
|
||
|
||
/* An equality function for address_entry. */
|
||
|
||
static int
|
||
eq_address_entry (const void *a, const void *b)
|
||
{
|
||
const struct address_entry *aea = (const struct address_entry *) a;
|
||
const struct address_entry *aeb = (const struct address_entry *) b;
|
||
|
||
return aea->pspace == aeb->pspace && aea->addr == aeb->addr;
|
||
}
|
||
|
||
/* Check whether the address, represented by PSPACE and ADDR, is
|
||
already in the set. If so, return 0. Otherwise, add it and return
|
||
1. */
|
||
|
||
static int
|
||
maybe_add_address (htab_t set, struct program_space *pspace, CORE_ADDR addr)
|
||
{
|
||
struct address_entry e, *p;
|
||
void **slot;
|
||
|
||
e.pspace = pspace;
|
||
e.addr = addr;
|
||
slot = htab_find_slot (set, &e, INSERT);
|
||
if (*slot)
|
||
return 0;
|
||
|
||
p = XNEW (struct address_entry);
|
||
memcpy (p, &e, sizeof (struct address_entry));
|
||
*slot = p;
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* A helper that walks over all matching symtabs in all objfiles and
|
||
calls CALLBACK for each symbol matching NAME. If SEARCH_PSPACE is
|
||
not NULL, then the search is restricted to just that program
|
||
space. If INCLUDE_INLINE is true then symbols representing
|
||
inlined instances of functions will be included in the result. */
|
||
|
||
static void
|
||
iterate_over_all_matching_symtabs
|
||
(struct linespec_state *state,
|
||
const lookup_name_info &lookup_name,
|
||
const domain_enum name_domain,
|
||
enum search_domain search_domain,
|
||
struct program_space *search_pspace, bool include_inline,
|
||
gdb::function_view<symbol_found_callback_ftype> callback)
|
||
{
|
||
struct program_space *pspace;
|
||
|
||
ALL_PSPACES (pspace)
|
||
{
|
||
if (search_pspace != NULL && search_pspace != pspace)
|
||
continue;
|
||
if (pspace->executing_startup)
|
||
continue;
|
||
|
||
set_current_program_space (pspace);
|
||
|
||
for (objfile *objfile : current_program_space->objfiles ())
|
||
{
|
||
if (objfile->sf)
|
||
objfile->sf->qf->expand_symtabs_matching (objfile,
|
||
NULL,
|
||
lookup_name,
|
||
NULL, NULL,
|
||
search_domain);
|
||
|
||
for (compunit_symtab *cu : objfile->compunits ())
|
||
{
|
||
struct symtab *symtab = COMPUNIT_FILETABS (cu);
|
||
|
||
iterate_over_file_blocks (symtab, lookup_name, name_domain,
|
||
callback);
|
||
|
||
if (include_inline)
|
||
{
|
||
const struct block *block;
|
||
int i;
|
||
|
||
for (i = FIRST_LOCAL_BLOCK;
|
||
i < BLOCKVECTOR_NBLOCKS (SYMTAB_BLOCKVECTOR (symtab));
|
||
i++)
|
||
{
|
||
block = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (symtab), i);
|
||
state->language->la_iterate_over_symbols
|
||
(block, lookup_name, name_domain,
|
||
[&] (block_symbol *bsym)
|
||
{
|
||
/* Restrict calls to CALLBACK to symbols
|
||
representing inline symbols only. */
|
||
if (SYMBOL_INLINED (bsym->symbol))
|
||
return callback (bsym);
|
||
return true;
|
||
});
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Returns the block to be used for symbol searches from
|
||
the current location. */
|
||
|
||
static const struct block *
|
||
get_current_search_block (void)
|
||
{
|
||
/* get_selected_block can change the current language when there is
|
||
no selected frame yet. */
|
||
scoped_restore_current_language save_language;
|
||
return get_selected_block (0);
|
||
}
|
||
|
||
/* Iterate over static and global blocks. */
|
||
|
||
static void
|
||
iterate_over_file_blocks
|
||
(struct symtab *symtab, const lookup_name_info &name,
|
||
domain_enum domain, gdb::function_view<symbol_found_callback_ftype> callback)
|
||
{
|
||
const struct block *block;
|
||
|
||
for (block = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (symtab), STATIC_BLOCK);
|
||
block != NULL;
|
||
block = BLOCK_SUPERBLOCK (block))
|
||
LA_ITERATE_OVER_SYMBOLS (block, name, domain, callback);
|
||
}
|
||
|
||
/* A helper for find_method. This finds all methods in type T of
|
||
language T_LANG which match NAME. It adds matching symbol names to
|
||
RESULT_NAMES, and adds T's direct superclasses to SUPERCLASSES. */
|
||
|
||
static void
|
||
find_methods (struct type *t, enum language t_lang, const char *name,
|
||
std::vector<const char *> *result_names,
|
||
std::vector<struct type *> *superclasses)
|
||
{
|
||
int ibase;
|
||
const char *class_name = TYPE_NAME (t);
|
||
|
||
/* Ignore this class if it doesn't have a name. This is ugly, but
|
||
unless we figure out how to get the physname without the name of
|
||
the class, then the loop can't do any good. */
|
||
if (class_name)
|
||
{
|
||
int method_counter;
|
||
lookup_name_info lookup_name (name, symbol_name_match_type::FULL);
|
||
symbol_name_matcher_ftype *symbol_name_compare
|
||
= get_symbol_name_matcher (language_def (t_lang), lookup_name);
|
||
|
||
t = check_typedef (t);
|
||
|
||
/* Loop over each method name. At this level, all overloads of a name
|
||
are counted as a single name. There is an inner loop which loops over
|
||
each overload. */
|
||
|
||
for (method_counter = TYPE_NFN_FIELDS (t) - 1;
|
||
method_counter >= 0;
|
||
--method_counter)
|
||
{
|
||
const char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter);
|
||
|
||
if (symbol_name_compare (method_name, lookup_name, NULL))
|
||
{
|
||
int field_counter;
|
||
|
||
for (field_counter = (TYPE_FN_FIELDLIST_LENGTH (t, method_counter)
|
||
- 1);
|
||
field_counter >= 0;
|
||
--field_counter)
|
||
{
|
||
struct fn_field *f;
|
||
const char *phys_name;
|
||
|
||
f = TYPE_FN_FIELDLIST1 (t, method_counter);
|
||
if (TYPE_FN_FIELD_STUB (f, field_counter))
|
||
continue;
|
||
phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter);
|
||
result_names->push_back (phys_name);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++)
|
||
superclasses->push_back (TYPE_BASECLASS (t, ibase));
|
||
}
|
||
|
||
/* Find an instance of the character C in the string S that is outside
|
||
of all parenthesis pairs, single-quoted strings, and double-quoted
|
||
strings. Also, ignore the char within a template name, like a ','
|
||
within foo<int, int>, while considering C++ operator</operator<<. */
|
||
|
||
const char *
|
||
find_toplevel_char (const char *s, char c)
|
||
{
|
||
int quoted = 0; /* zero if we're not in quotes;
|
||
'"' if we're in a double-quoted string;
|
||
'\'' if we're in a single-quoted string. */
|
||
int depth = 0; /* Number of unclosed parens we've seen. */
|
||
const char *scan;
|
||
|
||
for (scan = s; *scan; scan++)
|
||
{
|
||
if (quoted)
|
||
{
|
||
if (*scan == quoted)
|
||
quoted = 0;
|
||
else if (*scan == '\\' && *(scan + 1))
|
||
scan++;
|
||
}
|
||
else if (*scan == c && ! quoted && depth == 0)
|
||
return scan;
|
||
else if (*scan == '"' || *scan == '\'')
|
||
quoted = *scan;
|
||
else if (*scan == '(' || *scan == '<')
|
||
depth++;
|
||
else if ((*scan == ')' || *scan == '>') && depth > 0)
|
||
depth--;
|
||
else if (*scan == 'o' && !quoted && depth == 0)
|
||
{
|
||
/* Handle C++ operator names. */
|
||
if (strncmp (scan, CP_OPERATOR_STR, CP_OPERATOR_LEN) == 0)
|
||
{
|
||
scan += CP_OPERATOR_LEN;
|
||
if (*scan == c)
|
||
return scan;
|
||
while (isspace (*scan))
|
||
{
|
||
++scan;
|
||
if (*scan == c)
|
||
return scan;
|
||
}
|
||
if (*scan == '\0')
|
||
break;
|
||
|
||
switch (*scan)
|
||
{
|
||
/* Skip over one less than the appropriate number of
|
||
characters: the for loop will skip over the last
|
||
one. */
|
||
case '<':
|
||
if (scan[1] == '<')
|
||
{
|
||
scan++;
|
||
if (*scan == c)
|
||
return scan;
|
||
}
|
||
break;
|
||
case '>':
|
||
if (scan[1] == '>')
|
||
{
|
||
scan++;
|
||
if (*scan == c)
|
||
return scan;
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* The string equivalent of find_toplevel_char. Returns a pointer
|
||
to the location of NEEDLE in HAYSTACK, ignoring any occurrences
|
||
inside "()" and "<>". Returns NULL if NEEDLE was not found. */
|
||
|
||
static const char *
|
||
find_toplevel_string (const char *haystack, const char *needle)
|
||
{
|
||
const char *s = haystack;
|
||
|
||
do
|
||
{
|
||
s = find_toplevel_char (s, *needle);
|
||
|
||
if (s != NULL)
|
||
{
|
||
/* Found first char in HAYSTACK; check rest of string. */
|
||
if (startswith (s, needle))
|
||
return s;
|
||
|
||
/* Didn't find it; loop over HAYSTACK, looking for the next
|
||
instance of the first character of NEEDLE. */
|
||
++s;
|
||
}
|
||
}
|
||
while (s != NULL && *s != '\0');
|
||
|
||
/* NEEDLE was not found in HAYSTACK. */
|
||
return NULL;
|
||
}
|
||
|
||
/* Convert CANONICAL to its string representation using
|
||
symtab_to_fullname for SYMTAB. */
|
||
|
||
static std::string
|
||
canonical_to_fullform (const struct linespec_canonical_name *canonical)
|
||
{
|
||
if (canonical->symtab == NULL)
|
||
return canonical->suffix;
|
||
else
|
||
return string_printf ("%s:%s", symtab_to_fullname (canonical->symtab),
|
||
canonical->suffix);
|
||
}
|
||
|
||
/* Given FILTERS, a list of canonical names, filter the sals in RESULT
|
||
and store the result in SELF->CANONICAL. */
|
||
|
||
static void
|
||
filter_results (struct linespec_state *self,
|
||
std::vector<symtab_and_line> *result,
|
||
const std::vector<const char *> &filters)
|
||
{
|
||
for (const char *name : filters)
|
||
{
|
||
linespec_sals lsal;
|
||
|
||
for (size_t j = 0; j < result->size (); ++j)
|
||
{
|
||
const struct linespec_canonical_name *canonical;
|
||
|
||
canonical = &self->canonical_names[j];
|
||
std::string fullform = canonical_to_fullform (canonical);
|
||
|
||
if (name == fullform)
|
||
lsal.sals.push_back ((*result)[j]);
|
||
}
|
||
|
||
if (!lsal.sals.empty ())
|
||
{
|
||
lsal.canonical = xstrdup (name);
|
||
self->canonical->lsals.push_back (std::move (lsal));
|
||
}
|
||
}
|
||
|
||
self->canonical->pre_expanded = 0;
|
||
}
|
||
|
||
/* Store RESULT into SELF->CANONICAL. */
|
||
|
||
static void
|
||
convert_results_to_lsals (struct linespec_state *self,
|
||
std::vector<symtab_and_line> *result)
|
||
{
|
||
struct linespec_sals lsal;
|
||
|
||
lsal.canonical = NULL;
|
||
lsal.sals = std::move (*result);
|
||
self->canonical->lsals.push_back (std::move (lsal));
|
||
}
|
||
|
||
/* A structure that contains two string representations of a struct
|
||
linespec_canonical_name:
|
||
- one where the symtab's fullname is used;
|
||
- one where the filename followed the "set filename-display"
|
||
setting. */
|
||
|
||
struct decode_line_2_item
|
||
{
|
||
decode_line_2_item (std::string &&fullform_, std::string &&displayform_,
|
||
bool selected_)
|
||
: fullform (std::move (fullform_)),
|
||
displayform (std::move (displayform_)),
|
||
selected (selected_)
|
||
{
|
||
}
|
||
|
||
/* The form using symtab_to_fullname. */
|
||
std::string fullform;
|
||
|
||
/* The form using symtab_to_filename_for_display. */
|
||
std::string displayform;
|
||
|
||
/* Field is initialized to zero and it is set to one if the user
|
||
requested breakpoint for this entry. */
|
||
unsigned int selected : 1;
|
||
};
|
||
|
||
/* Helper for std::sort to sort decode_line_2_item entries by
|
||
DISPLAYFORM and secondarily by FULLFORM. */
|
||
|
||
static bool
|
||
decode_line_2_compare_items (const decode_line_2_item &a,
|
||
const decode_line_2_item &b)
|
||
{
|
||
if (a.displayform != b.displayform)
|
||
return a.displayform < b.displayform;
|
||
return a.fullform < b.fullform;
|
||
}
|
||
|
||
/* Handle multiple results in RESULT depending on SELECT_MODE. This
|
||
will either return normally, throw an exception on multiple
|
||
results, or present a menu to the user. On return, the SALS vector
|
||
in SELF->CANONICAL is set up properly. */
|
||
|
||
static void
|
||
decode_line_2 (struct linespec_state *self,
|
||
std::vector<symtab_and_line> *result,
|
||
const char *select_mode)
|
||
{
|
||
const char *args;
|
||
const char *prompt;
|
||
int i;
|
||
std::vector<const char *> filters;
|
||
std::vector<struct decode_line_2_item> items;
|
||
|
||
gdb_assert (select_mode != multiple_symbols_all);
|
||
gdb_assert (self->canonical != NULL);
|
||
gdb_assert (!result->empty ());
|
||
|
||
/* Prepare ITEMS array. */
|
||
for (i = 0; i < result->size (); ++i)
|
||
{
|
||
const struct linespec_canonical_name *canonical;
|
||
std::string displayform;
|
||
|
||
canonical = &self->canonical_names[i];
|
||
gdb_assert (canonical->suffix != NULL);
|
||
|
||
std::string fullform = canonical_to_fullform (canonical);
|
||
|
||
if (canonical->symtab == NULL)
|
||
displayform = canonical->suffix;
|
||
else
|
||
{
|
||
const char *fn_for_display;
|
||
|
||
fn_for_display = symtab_to_filename_for_display (canonical->symtab);
|
||
displayform = string_printf ("%s:%s", fn_for_display,
|
||
canonical->suffix);
|
||
}
|
||
|
||
items.emplace_back (std::move (fullform), std::move (displayform),
|
||
false);
|
||
}
|
||
|
||
/* Sort the list of method names. */
|
||
std::sort (items.begin (), items.end (), decode_line_2_compare_items);
|
||
|
||
/* Remove entries with the same FULLFORM. */
|
||
items.erase (std::unique (items.begin (), items.end (),
|
||
[] (const struct decode_line_2_item &a,
|
||
const struct decode_line_2_item &b)
|
||
{
|
||
return a.fullform == b.fullform;
|
||
}),
|
||
items.end ());
|
||
|
||
if (select_mode == multiple_symbols_cancel && items.size () > 1)
|
||
error (_("canceled because the command is ambiguous\n"
|
||
"See set/show multiple-symbol."));
|
||
|
||
if (select_mode == multiple_symbols_all || items.size () == 1)
|
||
{
|
||
convert_results_to_lsals (self, result);
|
||
return;
|
||
}
|
||
|
||
printf_unfiltered (_("[0] cancel\n[1] all\n"));
|
||
for (i = 0; i < items.size (); i++)
|
||
printf_unfiltered ("[%d] %s\n", i + 2, items[i].displayform.c_str ());
|
||
|
||
prompt = getenv ("PS2");
|
||
if (prompt == NULL)
|
||
{
|
||
prompt = "> ";
|
||
}
|
||
args = command_line_input (prompt, "overload-choice");
|
||
|
||
if (args == 0 || *args == 0)
|
||
error_no_arg (_("one or more choice numbers"));
|
||
|
||
number_or_range_parser parser (args);
|
||
while (!parser.finished ())
|
||
{
|
||
int num = parser.get_number ();
|
||
|
||
if (num == 0)
|
||
error (_("canceled"));
|
||
else if (num == 1)
|
||
{
|
||
/* We intentionally make this result in a single breakpoint,
|
||
contrary to what older versions of gdb did. The
|
||
rationale is that this lets a user get the
|
||
multiple_symbols_all behavior even with the 'ask'
|
||
setting; and he can get separate breakpoints by entering
|
||
"2-57" at the query. */
|
||
convert_results_to_lsals (self, result);
|
||
return;
|
||
}
|
||
|
||
num -= 2;
|
||
if (num >= items.size ())
|
||
printf_unfiltered (_("No choice number %d.\n"), num);
|
||
else
|
||
{
|
||
struct decode_line_2_item *item = &items[num];
|
||
|
||
if (!item->selected)
|
||
{
|
||
filters.push_back (item->fullform.c_str ());
|
||
item->selected = 1;
|
||
}
|
||
else
|
||
{
|
||
printf_unfiltered (_("duplicate request for %d ignored.\n"),
|
||
num + 2);
|
||
}
|
||
}
|
||
}
|
||
|
||
filter_results (self, result, filters);
|
||
}
|
||
|
||
|
||
|
||
/* The parser of linespec itself. */
|
||
|
||
/* Throw an appropriate error when SYMBOL is not found (optionally in
|
||
FILENAME). */
|
||
|
||
static void ATTRIBUTE_NORETURN
|
||
symbol_not_found_error (const char *symbol, const char *filename)
|
||
{
|
||
if (symbol == NULL)
|
||
symbol = "";
|
||
|
||
if (!have_full_symbols ()
|
||
&& !have_partial_symbols ()
|
||
&& !have_minimal_symbols ())
|
||
throw_error (NOT_FOUND_ERROR,
|
||
_("No symbol table is loaded. Use the \"file\" command."));
|
||
|
||
/* If SYMBOL starts with '$', the user attempted to either lookup
|
||
a function/variable in his code starting with '$' or an internal
|
||
variable of that name. Since we do not know which, be concise and
|
||
explain both possibilities. */
|
||
if (*symbol == '$')
|
||
{
|
||
if (filename)
|
||
throw_error (NOT_FOUND_ERROR,
|
||
_("Undefined convenience variable or function \"%s\" "
|
||
"not defined in \"%s\"."), symbol, filename);
|
||
else
|
||
throw_error (NOT_FOUND_ERROR,
|
||
_("Undefined convenience variable or function \"%s\" "
|
||
"not defined."), symbol);
|
||
}
|
||
else
|
||
{
|
||
if (filename)
|
||
throw_error (NOT_FOUND_ERROR,
|
||
_("Function \"%s\" not defined in \"%s\"."),
|
||
symbol, filename);
|
||
else
|
||
throw_error (NOT_FOUND_ERROR,
|
||
_("Function \"%s\" not defined."), symbol);
|
||
}
|
||
}
|
||
|
||
/* Throw an appropriate error when an unexpected token is encountered
|
||
in the input. */
|
||
|
||
static void ATTRIBUTE_NORETURN
|
||
unexpected_linespec_error (linespec_parser *parser)
|
||
{
|
||
linespec_token token;
|
||
static const char * token_type_strings[]
|
||
= {"keyword", "colon", "string", "number", "comma", "end of input"};
|
||
|
||
/* Get the token that generated the error. */
|
||
token = linespec_lexer_lex_one (parser);
|
||
|
||
/* Finally, throw the error. */
|
||
if (token.type == LSTOKEN_STRING || token.type == LSTOKEN_NUMBER
|
||
|| token.type == LSTOKEN_KEYWORD)
|
||
{
|
||
gdb::unique_xmalloc_ptr<char> string = copy_token_string (token);
|
||
throw_error (GENERIC_ERROR,
|
||
_("malformed linespec error: unexpected %s, \"%s\""),
|
||
token_type_strings[token.type], string.get ());
|
||
}
|
||
else
|
||
throw_error (GENERIC_ERROR,
|
||
_("malformed linespec error: unexpected %s"),
|
||
token_type_strings[token.type]);
|
||
}
|
||
|
||
/* Throw an undefined label error. */
|
||
|
||
static void ATTRIBUTE_NORETURN
|
||
undefined_label_error (const char *function, const char *label)
|
||
{
|
||
if (function != NULL)
|
||
throw_error (NOT_FOUND_ERROR,
|
||
_("No label \"%s\" defined in function \"%s\"."),
|
||
label, function);
|
||
else
|
||
throw_error (NOT_FOUND_ERROR,
|
||
_("No label \"%s\" defined in current function."),
|
||
label);
|
||
}
|
||
|
||
/* Throw a source file not found error. */
|
||
|
||
static void ATTRIBUTE_NORETURN
|
||
source_file_not_found_error (const char *name)
|
||
{
|
||
throw_error (NOT_FOUND_ERROR, _("No source file named %s."), name);
|
||
}
|
||
|
||
/* Unless at EIO, save the current stream position as completion word
|
||
point, and consume the next token. */
|
||
|
||
static linespec_token
|
||
save_stream_and_consume_token (linespec_parser *parser)
|
||
{
|
||
if (linespec_lexer_peek_token (parser).type != LSTOKEN_EOI)
|
||
parser->completion_word = PARSER_STREAM (parser);
|
||
return linespec_lexer_consume_token (parser);
|
||
}
|
||
|
||
/* See description in linespec.h. */
|
||
|
||
struct line_offset
|
||
linespec_parse_line_offset (const char *string)
|
||
{
|
||
const char *start = string;
|
||
struct line_offset line_offset = {0, LINE_OFFSET_NONE};
|
||
|
||
if (*string == '+')
|
||
{
|
||
line_offset.sign = LINE_OFFSET_PLUS;
|
||
++string;
|
||
}
|
||
else if (*string == '-')
|
||
{
|
||
line_offset.sign = LINE_OFFSET_MINUS;
|
||
++string;
|
||
}
|
||
|
||
if (*string != '\0' && !isdigit (*string))
|
||
error (_("malformed line offset: \"%s\""), start);
|
||
|
||
/* Right now, we only allow base 10 for offsets. */
|
||
line_offset.offset = atoi (string);
|
||
return line_offset;
|
||
}
|
||
|
||
/* In completion mode, if the user is still typing the number, there's
|
||
no possible completion to offer. But if there's already input past
|
||
the number, setup to expect NEXT. */
|
||
|
||
static void
|
||
set_completion_after_number (linespec_parser *parser,
|
||
linespec_complete_what next)
|
||
{
|
||
if (*PARSER_STREAM (parser) == ' ')
|
||
{
|
||
parser->completion_word = skip_spaces (PARSER_STREAM (parser) + 1);
|
||
parser->complete_what = next;
|
||
}
|
||
else
|
||
{
|
||
parser->completion_word = PARSER_STREAM (parser);
|
||
parser->complete_what = linespec_complete_what::NOTHING;
|
||
}
|
||
}
|
||
|
||
/* Parse the basic_spec in PARSER's input. */
|
||
|
||
static void
|
||
linespec_parse_basic (linespec_parser *parser)
|
||
{
|
||
gdb::unique_xmalloc_ptr<char> name;
|
||
linespec_token token;
|
||
std::vector<block_symbol> symbols;
|
||
std::vector<block_symbol> *labels;
|
||
std::vector<bound_minimal_symbol> minimal_symbols;
|
||
|
||
/* Get the next token. */
|
||
token = linespec_lexer_lex_one (parser);
|
||
|
||
/* If it is EOI or KEYWORD, issue an error. */
|
||
if (token.type == LSTOKEN_KEYWORD)
|
||
{
|
||
parser->complete_what = linespec_complete_what::NOTHING;
|
||
unexpected_linespec_error (parser);
|
||
}
|
||
else if (token.type == LSTOKEN_EOI)
|
||
{
|
||
unexpected_linespec_error (parser);
|
||
}
|
||
/* If it is a LSTOKEN_NUMBER, we have an offset. */
|
||
else if (token.type == LSTOKEN_NUMBER)
|
||
{
|
||
set_completion_after_number (parser, linespec_complete_what::KEYWORD);
|
||
|
||
/* Record the line offset and get the next token. */
|
||
name = copy_token_string (token);
|
||
PARSER_EXPLICIT (parser)->line_offset
|
||
= linespec_parse_line_offset (name.get ());
|
||
|
||
/* Get the next token. */
|
||
token = linespec_lexer_consume_token (parser);
|
||
|
||
/* If the next token is a comma, stop parsing and return. */
|
||
if (token.type == LSTOKEN_COMMA)
|
||
{
|
||
parser->complete_what = linespec_complete_what::NOTHING;
|
||
return;
|
||
}
|
||
|
||
/* If the next token is anything but EOI or KEYWORD, issue
|
||
an error. */
|
||
if (token.type != LSTOKEN_KEYWORD && token.type != LSTOKEN_EOI)
|
||
unexpected_linespec_error (parser);
|
||
}
|
||
|
||
if (token.type == LSTOKEN_KEYWORD || token.type == LSTOKEN_EOI)
|
||
return;
|
||
|
||
/* Next token must be LSTOKEN_STRING. */
|
||
if (token.type != LSTOKEN_STRING)
|
||
{
|
||
parser->complete_what = linespec_complete_what::NOTHING;
|
||
unexpected_linespec_error (parser);
|
||
}
|
||
|
||
/* The current token will contain the name of a function, method,
|
||
or label. */
|
||
name = copy_token_string (token);
|
||
|
||
if (parser->completion_tracker != NULL)
|
||
{
|
||
/* If the function name ends with a ":", then this may be an
|
||
incomplete "::" scope operator instead of a label separator.
|
||
E.g.,
|
||
"b klass:<tab>"
|
||
which should expand to:
|
||
"b klass::method()"
|
||
|
||
Do a tentative completion assuming the later. If we find
|
||
completions, advance the stream past the colon token and make
|
||
it part of the function name/token. */
|
||
|
||
if (!parser->completion_quote_char
|
||
&& strcmp (PARSER_STREAM (parser), ":") == 0)
|
||
{
|
||
completion_tracker tmp_tracker;
|
||
const char *source_filename
|
||
= PARSER_EXPLICIT (parser)->source_filename;
|
||
symbol_name_match_type match_type
|
||
= PARSER_EXPLICIT (parser)->func_name_match_type;
|
||
|
||
linespec_complete_function (tmp_tracker,
|
||
parser->completion_word,
|
||
match_type,
|
||
source_filename);
|
||
|
||
if (tmp_tracker.have_completions ())
|
||
{
|
||
PARSER_STREAM (parser)++;
|
||
LS_TOKEN_STOKEN (token).length++;
|
||
|
||
name.reset (savestring (parser->completion_word,
|
||
(PARSER_STREAM (parser)
|
||
- parser->completion_word)));
|
||
}
|
||
}
|
||
|
||
PARSER_EXPLICIT (parser)->function_name = name.release ();
|
||
}
|
||
else
|
||
{
|
||
/* Try looking it up as a function/method. */
|
||
find_linespec_symbols (PARSER_STATE (parser),
|
||
PARSER_RESULT (parser)->file_symtabs, name.get (),
|
||
PARSER_EXPLICIT (parser)->func_name_match_type,
|
||
&symbols, &minimal_symbols);
|
||
|
||
if (!symbols.empty () || !minimal_symbols.empty ())
|
||
{
|
||
PARSER_RESULT (parser)->function_symbols
|
||
= new std::vector<block_symbol> (std::move (symbols));
|
||
PARSER_RESULT (parser)->minimal_symbols
|
||
= new std::vector<bound_minimal_symbol>
|
||
(std::move (minimal_symbols));
|
||
PARSER_EXPLICIT (parser)->function_name = name.release ();
|
||
}
|
||
else
|
||
{
|
||
/* NAME was not a function or a method. So it must be a label
|
||
name or user specified variable like "break foo.c:$zippo". */
|
||
labels = find_label_symbols (PARSER_STATE (parser), NULL,
|
||
&symbols, name.get ());
|
||
if (labels != NULL)
|
||
{
|
||
PARSER_RESULT (parser)->labels.label_symbols = labels;
|
||
PARSER_RESULT (parser)->labels.function_symbols
|
||
= new std::vector<block_symbol> (std::move (symbols));
|
||
PARSER_EXPLICIT (parser)->label_name = name.release ();
|
||
}
|
||
else if (token.type == LSTOKEN_STRING
|
||
&& *LS_TOKEN_STOKEN (token).ptr == '$')
|
||
{
|
||
/* User specified a convenience variable or history value. */
|
||
PARSER_EXPLICIT (parser)->line_offset
|
||
= linespec_parse_variable (PARSER_STATE (parser), name.get ());
|
||
|
||
if (PARSER_EXPLICIT (parser)->line_offset.sign == LINE_OFFSET_UNKNOWN)
|
||
{
|
||
/* The user-specified variable was not valid. Do not
|
||
throw an error here. parse_linespec will do it for us. */
|
||
PARSER_EXPLICIT (parser)->function_name = name.release ();
|
||
return;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* The name is also not a label. Abort parsing. Do not throw
|
||
an error here. parse_linespec will do it for us. */
|
||
|
||
/* Save a copy of the name we were trying to lookup. */
|
||
PARSER_EXPLICIT (parser)->function_name = name.release ();
|
||
return;
|
||
}
|
||
}
|
||
}
|
||
|
||
int previous_qc = parser->completion_quote_char;
|
||
|
||
/* Get the next token. */
|
||
token = linespec_lexer_consume_token (parser);
|
||
|
||
if (token.type == LSTOKEN_EOI)
|
||
{
|
||
if (previous_qc && !parser->completion_quote_char)
|
||
parser->complete_what = linespec_complete_what::KEYWORD;
|
||
}
|
||
else if (token.type == LSTOKEN_COLON)
|
||
{
|
||
/* User specified a label or a lineno. */
|
||
token = linespec_lexer_consume_token (parser);
|
||
|
||
if (token.type == LSTOKEN_NUMBER)
|
||
{
|
||
/* User specified an offset. Record the line offset and
|
||
get the next token. */
|
||
set_completion_after_number (parser, linespec_complete_what::KEYWORD);
|
||
|
||
name = copy_token_string (token);
|
||
PARSER_EXPLICIT (parser)->line_offset
|
||
= linespec_parse_line_offset (name.get ());
|
||
|
||
/* Get the next token. */
|
||
token = linespec_lexer_consume_token (parser);
|
||
}
|
||
else if (token.type == LSTOKEN_EOI && parser->completion_tracker != NULL)
|
||
{
|
||
parser->complete_what = linespec_complete_what::LABEL;
|
||
}
|
||
else if (token.type == LSTOKEN_STRING)
|
||
{
|
||
parser->complete_what = linespec_complete_what::LABEL;
|
||
|
||
/* If we have text after the label separated by whitespace
|
||
(e.g., "b func():lab i<tab>"), don't consider it part of
|
||
the label. In completion mode that should complete to
|
||
"if", in normal mode, the 'i' should be treated as
|
||
garbage. */
|
||
if (parser->completion_quote_char == '\0')
|
||
{
|
||
const char *ptr = LS_TOKEN_STOKEN (token).ptr;
|
||
for (size_t i = 0; i < LS_TOKEN_STOKEN (token).length; i++)
|
||
{
|
||
if (ptr[i] == ' ')
|
||
{
|
||
LS_TOKEN_STOKEN (token).length = i;
|
||
PARSER_STREAM (parser) = skip_spaces (ptr + i + 1);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (parser->completion_tracker != NULL)
|
||
{
|
||
if (PARSER_STREAM (parser)[-1] == ' ')
|
||
{
|
||
parser->completion_word = PARSER_STREAM (parser);
|
||
parser->complete_what = linespec_complete_what::KEYWORD;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* Grab a copy of the label's name and look it up. */
|
||
name = copy_token_string (token);
|
||
labels
|
||
= find_label_symbols (PARSER_STATE (parser),
|
||
PARSER_RESULT (parser)->function_symbols,
|
||
&symbols, name.get ());
|
||
|
||
if (labels != NULL)
|
||
{
|
||
PARSER_RESULT (parser)->labels.label_symbols = labels;
|
||
PARSER_RESULT (parser)->labels.function_symbols
|
||
= new std::vector<block_symbol> (std::move (symbols));
|
||
PARSER_EXPLICIT (parser)->label_name = name.release ();
|
||
}
|
||
else
|
||
{
|
||
/* We don't know what it was, but it isn't a label. */
|
||
undefined_label_error
|
||
(PARSER_EXPLICIT (parser)->function_name, name.get ());
|
||
}
|
||
|
||
}
|
||
|
||
/* Check for a line offset. */
|
||
token = save_stream_and_consume_token (parser);
|
||
if (token.type == LSTOKEN_COLON)
|
||
{
|
||
/* Get the next token. */
|
||
token = linespec_lexer_consume_token (parser);
|
||
|
||
/* It must be a line offset. */
|
||
if (token.type != LSTOKEN_NUMBER)
|
||
unexpected_linespec_error (parser);
|
||
|
||
/* Record the line offset and get the next token. */
|
||
name = copy_token_string (token);
|
||
|
||
PARSER_EXPLICIT (parser)->line_offset
|
||
= linespec_parse_line_offset (name.get ());
|
||
|
||
/* Get the next token. */
|
||
token = linespec_lexer_consume_token (parser);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* Trailing ':' in the input. Issue an error. */
|
||
unexpected_linespec_error (parser);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Canonicalize the linespec contained in LS. The result is saved into
|
||
STATE->canonical. This function handles both linespec and explicit
|
||
locations. */
|
||
|
||
static void
|
||
canonicalize_linespec (struct linespec_state *state, const linespec_p ls)
|
||
{
|
||
struct event_location *canon;
|
||
struct explicit_location *explicit_loc;
|
||
|
||
/* If canonicalization was not requested, no need to do anything. */
|
||
if (!state->canonical)
|
||
return;
|
||
|
||
/* Save everything as an explicit location. */
|
||
state->canonical->location
|
||
= new_explicit_location (&ls->explicit_loc);
|
||
canon = state->canonical->location.get ();
|
||
explicit_loc = get_explicit_location (canon);
|
||
|
||
if (explicit_loc->label_name != NULL)
|
||
{
|
||
state->canonical->special_display = 1;
|
||
|
||
if (explicit_loc->function_name == NULL)
|
||
{
|
||
/* No function was specified, so add the symbol name. */
|
||
gdb_assert (!ls->labels.function_symbols->empty ()
|
||
&& (ls->labels.function_symbols->size () == 1));
|
||
block_symbol s = ls->labels.function_symbols->front ();
|
||
explicit_loc->function_name = xstrdup (s.symbol->natural_name ());
|
||
}
|
||
}
|
||
|
||
/* If this location originally came from a linespec, save a string
|
||
representation of it for display and saving to file. */
|
||
if (state->is_linespec)
|
||
{
|
||
char *linespec = explicit_location_to_linespec (explicit_loc);
|
||
|
||
set_event_location_string (canon, linespec);
|
||
xfree (linespec);
|
||
}
|
||
}
|
||
|
||
/* Given a line offset in LS, construct the relevant SALs. */
|
||
|
||
static std::vector<symtab_and_line>
|
||
create_sals_line_offset (struct linespec_state *self,
|
||
linespec_p ls)
|
||
{
|
||
int use_default = 0;
|
||
|
||
/* This is where we need to make sure we have good defaults.
|
||
We must guarantee that this section of code is never executed
|
||
when we are called with just a function name, since
|
||
set_default_source_symtab_and_line uses
|
||
select_source_symtab that calls us with such an argument. */
|
||
|
||
if (ls->file_symtabs->size () == 1
|
||
&& ls->file_symtabs->front () == nullptr)
|
||
{
|
||
set_current_program_space (self->program_space);
|
||
|
||
/* Make sure we have at least a default source line. */
|
||
set_default_source_symtab_and_line ();
|
||
initialize_defaults (&self->default_symtab, &self->default_line);
|
||
*ls->file_symtabs
|
||
= collect_symtabs_from_filename (self->default_symtab->filename,
|
||
self->search_pspace);
|
||
use_default = 1;
|
||
}
|
||
|
||
symtab_and_line val;
|
||
val.line = ls->explicit_loc.line_offset.offset;
|
||
switch (ls->explicit_loc.line_offset.sign)
|
||
{
|
||
case LINE_OFFSET_PLUS:
|
||
if (ls->explicit_loc.line_offset.offset == 0)
|
||
val.line = 5;
|
||
if (use_default)
|
||
val.line = self->default_line + val.line;
|
||
break;
|
||
|
||
case LINE_OFFSET_MINUS:
|
||
if (ls->explicit_loc.line_offset.offset == 0)
|
||
val.line = 15;
|
||
if (use_default)
|
||
val.line = self->default_line - val.line;
|
||
else
|
||
val.line = -val.line;
|
||
break;
|
||
|
||
case LINE_OFFSET_NONE:
|
||
break; /* No need to adjust val.line. */
|
||
}
|
||
|
||
std::vector<symtab_and_line> values;
|
||
if (self->list_mode)
|
||
values = decode_digits_list_mode (self, ls, val);
|
||
else
|
||
{
|
||
struct linetable_entry *best_entry = NULL;
|
||
int i, j;
|
||
|
||
std::vector<symtab_and_line> intermediate_results
|
||
= decode_digits_ordinary (self, ls, val.line, &best_entry);
|
||
if (intermediate_results.empty () && best_entry != NULL)
|
||
intermediate_results = decode_digits_ordinary (self, ls,
|
||
best_entry->line,
|
||
&best_entry);
|
||
|
||
/* For optimized code, the compiler can scatter one source line
|
||
across disjoint ranges of PC values, even when no duplicate
|
||
functions or inline functions are involved. For example,
|
||
'for (;;)' inside a non-template, non-inline, and non-ctor-or-dtor
|
||
function can result in two PC ranges. In this case, we don't
|
||
want to set a breakpoint on the first PC of each range. To filter
|
||
such cases, we use containing blocks -- for each PC found
|
||
above, we see if there are other PCs that are in the same
|
||
block. If yes, the other PCs are filtered out. */
|
||
|
||
gdb::def_vector<int> filter (intermediate_results.size ());
|
||
gdb::def_vector<const block *> blocks (intermediate_results.size ());
|
||
|
||
for (i = 0; i < intermediate_results.size (); ++i)
|
||
{
|
||
set_current_program_space (intermediate_results[i].pspace);
|
||
|
||
filter[i] = 1;
|
||
blocks[i] = block_for_pc_sect (intermediate_results[i].pc,
|
||
intermediate_results[i].section);
|
||
}
|
||
|
||
for (i = 0; i < intermediate_results.size (); ++i)
|
||
{
|
||
if (blocks[i] != NULL)
|
||
for (j = i + 1; j < intermediate_results.size (); ++j)
|
||
{
|
||
if (blocks[j] == blocks[i])
|
||
{
|
||
filter[j] = 0;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
for (i = 0; i < intermediate_results.size (); ++i)
|
||
if (filter[i])
|
||
{
|
||
struct symbol *sym = (blocks[i]
|
||
? block_containing_function (blocks[i])
|
||
: NULL);
|
||
|
||
if (self->funfirstline)
|
||
skip_prologue_sal (&intermediate_results[i]);
|
||
intermediate_results[i].symbol = sym;
|
||
add_sal_to_sals (self, &values, &intermediate_results[i],
|
||
sym ? sym->natural_name () : NULL, 0);
|
||
}
|
||
}
|
||
|
||
if (values.empty ())
|
||
{
|
||
if (ls->explicit_loc.source_filename)
|
||
throw_error (NOT_FOUND_ERROR, _("No line %d in file \"%s\"."),
|
||
val.line, ls->explicit_loc.source_filename);
|
||
else
|
||
throw_error (NOT_FOUND_ERROR, _("No line %d in the current file."),
|
||
val.line);
|
||
}
|
||
|
||
return values;
|
||
}
|
||
|
||
/* Convert the given ADDRESS into SaLs. */
|
||
|
||
static std::vector<symtab_and_line>
|
||
convert_address_location_to_sals (struct linespec_state *self,
|
||
CORE_ADDR address)
|
||
{
|
||
symtab_and_line sal = find_pc_line (address, 0);
|
||
sal.pc = address;
|
||
sal.section = find_pc_overlay (address);
|
||
sal.explicit_pc = 1;
|
||
sal.symbol = find_pc_sect_containing_function (sal.pc, sal.section);
|
||
|
||
std::vector<symtab_and_line> sals;
|
||
add_sal_to_sals (self, &sals, &sal, core_addr_to_string (address), 1);
|
||
|
||
return sals;
|
||
}
|
||
|
||
/* Create and return SALs from the linespec LS. */
|
||
|
||
static std::vector<symtab_and_line>
|
||
convert_linespec_to_sals (struct linespec_state *state, linespec_p ls)
|
||
{
|
||
std::vector<symtab_and_line> sals;
|
||
|
||
if (ls->labels.label_symbols != NULL)
|
||
{
|
||
/* We have just a bunch of functions/methods or labels. */
|
||
struct symtab_and_line sal;
|
||
|
||
for (const auto &sym : *ls->labels.label_symbols)
|
||
{
|
||
struct program_space *pspace
|
||
= SYMTAB_PSPACE (symbol_symtab (sym.symbol));
|
||
|
||
if (symbol_to_sal (&sal, state->funfirstline, sym.symbol)
|
||
&& maybe_add_address (state->addr_set, pspace, sal.pc))
|
||
add_sal_to_sals (state, &sals, &sal,
|
||
sym.symbol->natural_name (), 0);
|
||
}
|
||
}
|
||
else if (ls->function_symbols != NULL || ls->minimal_symbols != NULL)
|
||
{
|
||
/* We have just a bunch of functions and/or methods. */
|
||
if (ls->function_symbols != NULL)
|
||
{
|
||
/* Sort symbols so that symbols with the same program space are next
|
||
to each other. */
|
||
std::sort (ls->function_symbols->begin (),
|
||
ls->function_symbols->end (),
|
||
compare_symbols);
|
||
|
||
for (const auto &sym : *ls->function_symbols)
|
||
{
|
||
program_space *pspace
|
||
= SYMTAB_PSPACE (symbol_symtab (sym.symbol));
|
||
set_current_program_space (pspace);
|
||
|
||
/* Don't skip to the first line of the function if we
|
||
had found an ifunc minimal symbol for this function,
|
||
because that means that this function is an ifunc
|
||
resolver with the same name as the ifunc itself. */
|
||
bool found_ifunc = false;
|
||
|
||
if (state->funfirstline
|
||
&& ls->minimal_symbols != NULL
|
||
&& SYMBOL_CLASS (sym.symbol) == LOC_BLOCK)
|
||
{
|
||
const CORE_ADDR addr
|
||
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym.symbol));
|
||
|
||
for (const auto &elem : *ls->minimal_symbols)
|
||
{
|
||
if (MSYMBOL_TYPE (elem.minsym) == mst_text_gnu_ifunc
|
||
|| MSYMBOL_TYPE (elem.minsym) == mst_data_gnu_ifunc)
|
||
{
|
||
CORE_ADDR msym_addr = BMSYMBOL_VALUE_ADDRESS (elem);
|
||
if (MSYMBOL_TYPE (elem.minsym) == mst_data_gnu_ifunc)
|
||
{
|
||
struct gdbarch *gdbarch
|
||
= get_objfile_arch (elem.objfile);
|
||
msym_addr
|
||
= (gdbarch_convert_from_func_ptr_addr
|
||
(gdbarch,
|
||
msym_addr,
|
||
current_top_target ()));
|
||
}
|
||
|
||
if (msym_addr == addr)
|
||
{
|
||
found_ifunc = true;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
if (!found_ifunc)
|
||
{
|
||
symtab_and_line sal;
|
||
if (symbol_to_sal (&sal, state->funfirstline, sym.symbol)
|
||
&& maybe_add_address (state->addr_set, pspace, sal.pc))
|
||
add_sal_to_sals (state, &sals, &sal,
|
||
sym.symbol->natural_name (), 0);
|
||
}
|
||
}
|
||
}
|
||
|
||
if (ls->minimal_symbols != NULL)
|
||
{
|
||
/* Sort minimal symbols by program space, too */
|
||
std::sort (ls->minimal_symbols->begin (),
|
||
ls->minimal_symbols->end (),
|
||
compare_msymbols);
|
||
|
||
for (const auto &elem : *ls->minimal_symbols)
|
||
{
|
||
program_space *pspace = elem.objfile->pspace;
|
||
set_current_program_space (pspace);
|
||
minsym_found (state, elem.objfile, elem.minsym, &sals);
|
||
}
|
||
}
|
||
}
|
||
else if (ls->explicit_loc.line_offset.sign != LINE_OFFSET_UNKNOWN)
|
||
{
|
||
/* Only an offset was specified. */
|
||
sals = create_sals_line_offset (state, ls);
|
||
|
||
/* Make sure we have a filename for canonicalization. */
|
||
if (ls->explicit_loc.source_filename == NULL)
|
||
{
|
||
const char *fullname = symtab_to_fullname (state->default_symtab);
|
||
|
||
/* It may be more appropriate to keep DEFAULT_SYMTAB in its symtab
|
||
form so that displaying SOURCE_FILENAME can follow the current
|
||
FILENAME_DISPLAY_STRING setting. But as it is used only rarely
|
||
it has been kept for code simplicity only in absolute form. */
|
||
ls->explicit_loc.source_filename = xstrdup (fullname);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* We haven't found any results... */
|
||
return sals;
|
||
}
|
||
|
||
canonicalize_linespec (state, ls);
|
||
|
||
if (!sals.empty () && state->canonical != NULL)
|
||
state->canonical->pre_expanded = 1;
|
||
|
||
return sals;
|
||
}
|
||
|
||
/* Build RESULT from the explicit location components SOURCE_FILENAME,
|
||
FUNCTION_NAME, LABEL_NAME and LINE_OFFSET. */
|
||
|
||
static void
|
||
convert_explicit_location_to_linespec (struct linespec_state *self,
|
||
linespec_p result,
|
||
const char *source_filename,
|
||
const char *function_name,
|
||
symbol_name_match_type fname_match_type,
|
||
const char *label_name,
|
||
struct line_offset line_offset)
|
||
{
|
||
std::vector<block_symbol> symbols;
|
||
std::vector<block_symbol> *labels;
|
||
std::vector<bound_minimal_symbol> minimal_symbols;
|
||
|
||
result->explicit_loc.func_name_match_type = fname_match_type;
|
||
|
||
if (source_filename != NULL)
|
||
{
|
||
try
|
||
{
|
||
*result->file_symtabs
|
||
= symtabs_from_filename (source_filename, self->search_pspace);
|
||
}
|
||
catch (const gdb_exception_error &except)
|
||
{
|
||
source_file_not_found_error (source_filename);
|
||
}
|
||
result->explicit_loc.source_filename = xstrdup (source_filename);
|
||
}
|
||
else
|
||
{
|
||
/* A NULL entry means to use the default symtab. */
|
||
result->file_symtabs->push_back (nullptr);
|
||
}
|
||
|
||
if (function_name != NULL)
|
||
{
|
||
find_linespec_symbols (self, result->file_symtabs,
|
||
function_name, fname_match_type,
|
||
&symbols, &minimal_symbols);
|
||
|
||
if (symbols.empty () && minimal_symbols.empty ())
|
||
symbol_not_found_error (function_name,
|
||
result->explicit_loc.source_filename);
|
||
|
||
result->explicit_loc.function_name = xstrdup (function_name);
|
||
result->function_symbols
|
||
= new std::vector<block_symbol> (std::move (symbols));
|
||
result->minimal_symbols
|
||
= new std::vector<bound_minimal_symbol> (std::move (minimal_symbols));
|
||
}
|
||
|
||
if (label_name != NULL)
|
||
{
|
||
labels = find_label_symbols (self, result->function_symbols,
|
||
&symbols, label_name);
|
||
|
||
if (labels == NULL)
|
||
undefined_label_error (result->explicit_loc.function_name,
|
||
label_name);
|
||
|
||
result->explicit_loc.label_name = xstrdup (label_name);
|
||
result->labels.label_symbols = labels;
|
||
result->labels.function_symbols
|
||
= new std::vector<block_symbol> (std::move (symbols));
|
||
}
|
||
|
||
if (line_offset.sign != LINE_OFFSET_UNKNOWN)
|
||
result->explicit_loc.line_offset = line_offset;
|
||
}
|
||
|
||
/* Convert the explicit location EXPLICIT_LOC into SaLs. */
|
||
|
||
static std::vector<symtab_and_line>
|
||
convert_explicit_location_to_sals (struct linespec_state *self,
|
||
linespec_p result,
|
||
const struct explicit_location *explicit_loc)
|
||
{
|
||
convert_explicit_location_to_linespec (self, result,
|
||
explicit_loc->source_filename,
|
||
explicit_loc->function_name,
|
||
explicit_loc->func_name_match_type,
|
||
explicit_loc->label_name,
|
||
explicit_loc->line_offset);
|
||
return convert_linespec_to_sals (self, result);
|
||
}
|
||
|
||
/* Parse a string that specifies a linespec.
|
||
|
||
The basic grammar of linespecs:
|
||
|
||
linespec -> var_spec | basic_spec
|
||
var_spec -> '$' (STRING | NUMBER)
|
||
|
||
basic_spec -> file_offset_spec | function_spec | label_spec
|
||
file_offset_spec -> opt_file_spec offset_spec
|
||
function_spec -> opt_file_spec function_name_spec opt_label_spec
|
||
label_spec -> label_name_spec
|
||
|
||
opt_file_spec -> "" | file_name_spec ':'
|
||
opt_label_spec -> "" | ':' label_name_spec
|
||
|
||
file_name_spec -> STRING
|
||
function_name_spec -> STRING
|
||
label_name_spec -> STRING
|
||
function_name_spec -> STRING
|
||
offset_spec -> NUMBER
|
||
-> '+' NUMBER
|
||
-> '-' NUMBER
|
||
|
||
This may all be followed by several keywords such as "if EXPR",
|
||
which we ignore.
|
||
|
||
A comma will terminate parsing.
|
||
|
||
The function may be an undebuggable function found in minimal symbol table.
|
||
|
||
If the argument FUNFIRSTLINE is nonzero, we want the first line
|
||
of real code inside a function when a function is specified, and it is
|
||
not OK to specify a variable or type to get its line number.
|
||
|
||
DEFAULT_SYMTAB specifies the file to use if none is specified.
|
||
It defaults to current_source_symtab.
|
||
DEFAULT_LINE specifies the line number to use for relative
|
||
line numbers (that start with signs). Defaults to current_source_line.
|
||
If CANONICAL is non-NULL, store an array of strings containing the canonical
|
||
line specs there if necessary. Currently overloaded member functions and
|
||
line numbers or static functions without a filename yield a canonical
|
||
line spec. The array and the line spec strings are allocated on the heap,
|
||
it is the callers responsibility to free them.
|
||
|
||
Note that it is possible to return zero for the symtab
|
||
if no file is validly specified. Callers must check that.
|
||
Also, the line number returned may be invalid. */
|
||
|
||
/* Parse the linespec in ARG. MATCH_TYPE indicates how function names
|
||
should be matched. */
|
||
|
||
static std::vector<symtab_and_line>
|
||
parse_linespec (linespec_parser *parser, const char *arg,
|
||
symbol_name_match_type match_type)
|
||
{
|
||
linespec_token token;
|
||
struct gdb_exception file_exception;
|
||
|
||
/* A special case to start. It has become quite popular for
|
||
IDEs to work around bugs in the previous parser by quoting
|
||
the entire linespec, so we attempt to deal with this nicely. */
|
||
parser->is_quote_enclosed = 0;
|
||
if (parser->completion_tracker == NULL
|
||
&& !is_ada_operator (arg)
|
||
&& strchr (linespec_quote_characters, *arg) != NULL)
|
||
{
|
||
const char *end;
|
||
|
||
end = skip_quote_char (arg + 1, *arg);
|
||
if (end != NULL && is_closing_quote_enclosed (end))
|
||
{
|
||
/* Here's the special case. Skip ARG past the initial
|
||
quote. */
|
||
++arg;
|
||
parser->is_quote_enclosed = 1;
|
||
}
|
||
}
|
||
|
||
parser->lexer.saved_arg = arg;
|
||
parser->lexer.stream = arg;
|
||
parser->completion_word = arg;
|
||
parser->complete_what = linespec_complete_what::FUNCTION;
|
||
PARSER_EXPLICIT (parser)->func_name_match_type = match_type;
|
||
|
||
/* Initialize the default symtab and line offset. */
|
||
initialize_defaults (&PARSER_STATE (parser)->default_symtab,
|
||
&PARSER_STATE (parser)->default_line);
|
||
|
||
/* Objective-C shortcut. */
|
||
if (parser->completion_tracker == NULL)
|
||
{
|
||
std::vector<symtab_and_line> values
|
||
= decode_objc (PARSER_STATE (parser), PARSER_RESULT (parser), arg);
|
||
if (!values.empty ())
|
||
return values;
|
||
}
|
||
else
|
||
{
|
||
/* "-"/"+" is either an objc selector, or a number. There's
|
||
nothing to complete the latter to, so just let the caller
|
||
complete on functions, which finds objc selectors, if there's
|
||
any. */
|
||
if ((arg[0] == '-' || arg[0] == '+') && arg[1] == '\0')
|
||
return {};
|
||
}
|
||
|
||
/* Start parsing. */
|
||
|
||
/* Get the first token. */
|
||
token = linespec_lexer_consume_token (parser);
|
||
|
||
/* It must be either LSTOKEN_STRING or LSTOKEN_NUMBER. */
|
||
if (token.type == LSTOKEN_STRING && *LS_TOKEN_STOKEN (token).ptr == '$')
|
||
{
|
||
/* A NULL entry means to use GLOBAL_DEFAULT_SYMTAB. */
|
||
if (parser->completion_tracker == NULL)
|
||
PARSER_RESULT (parser)->file_symtabs->push_back (nullptr);
|
||
|
||
/* User specified a convenience variable or history value. */
|
||
gdb::unique_xmalloc_ptr<char> var = copy_token_string (token);
|
||
PARSER_EXPLICIT (parser)->line_offset
|
||
= linespec_parse_variable (PARSER_STATE (parser), var.get ());
|
||
|
||
/* If a line_offset wasn't found (VAR is the name of a user
|
||
variable/function), then skip to normal symbol processing. */
|
||
if (PARSER_EXPLICIT (parser)->line_offset.sign != LINE_OFFSET_UNKNOWN)
|
||
{
|
||
/* Consume this token. */
|
||
linespec_lexer_consume_token (parser);
|
||
|
||
goto convert_to_sals;
|
||
}
|
||
}
|
||
else if (token.type == LSTOKEN_EOI && parser->completion_tracker != NULL)
|
||
{
|
||
/* Let the default linespec_complete_what::FUNCTION kick in. */
|
||
unexpected_linespec_error (parser);
|
||
}
|
||
else if (token.type != LSTOKEN_STRING && token.type != LSTOKEN_NUMBER)
|
||
{
|
||
parser->complete_what = linespec_complete_what::NOTHING;
|
||
unexpected_linespec_error (parser);
|
||
}
|
||
|
||
/* Shortcut: If the next token is not LSTOKEN_COLON, we know that
|
||
this token cannot represent a filename. */
|
||
token = linespec_lexer_peek_token (parser);
|
||
|
||
if (token.type == LSTOKEN_COLON)
|
||
{
|
||
/* Get the current token again and extract the filename. */
|
||
token = linespec_lexer_lex_one (parser);
|
||
gdb::unique_xmalloc_ptr<char> user_filename = copy_token_string (token);
|
||
|
||
/* Check if the input is a filename. */
|
||
try
|
||
{
|
||
*PARSER_RESULT (parser)->file_symtabs
|
||
= symtabs_from_filename (user_filename.get (),
|
||
PARSER_STATE (parser)->search_pspace);
|
||
}
|
||
catch (gdb_exception_error &ex)
|
||
{
|
||
file_exception = std::move (ex);
|
||
}
|
||
|
||
if (file_exception.reason >= 0)
|
||
{
|
||
/* Symtabs were found for the file. Record the filename. */
|
||
PARSER_EXPLICIT (parser)->source_filename = user_filename.release ();
|
||
|
||
/* Get the next token. */
|
||
token = linespec_lexer_consume_token (parser);
|
||
|
||
/* This is LSTOKEN_COLON; consume it. */
|
||
linespec_lexer_consume_token (parser);
|
||
}
|
||
else
|
||
{
|
||
/* A NULL entry means to use GLOBAL_DEFAULT_SYMTAB. */
|
||
PARSER_RESULT (parser)->file_symtabs->push_back (nullptr);
|
||
}
|
||
}
|
||
/* If the next token is not EOI, KEYWORD, or COMMA, issue an error. */
|
||
else if (parser->completion_tracker == NULL
|
||
&& (token.type != LSTOKEN_EOI && token.type != LSTOKEN_KEYWORD
|
||
&& token.type != LSTOKEN_COMMA))
|
||
{
|
||
/* TOKEN is the _next_ token, not the one currently in the parser.
|
||
Consuming the token will give the correct error message. */
|
||
linespec_lexer_consume_token (parser);
|
||
unexpected_linespec_error (parser);
|
||
}
|
||
else
|
||
{
|
||
/* A NULL entry means to use GLOBAL_DEFAULT_SYMTAB. */
|
||
PARSER_RESULT (parser)->file_symtabs->push_back (nullptr);
|
||
}
|
||
|
||
/* Parse the rest of the linespec. */
|
||
linespec_parse_basic (parser);
|
||
|
||
if (parser->completion_tracker == NULL
|
||
&& PARSER_RESULT (parser)->function_symbols == NULL
|
||
&& PARSER_RESULT (parser)->labels.label_symbols == NULL
|
||
&& PARSER_EXPLICIT (parser)->line_offset.sign == LINE_OFFSET_UNKNOWN
|
||
&& PARSER_RESULT (parser)->minimal_symbols == NULL)
|
||
{
|
||
/* The linespec didn't parse. Re-throw the file exception if
|
||
there was one. */
|
||
if (file_exception.reason < 0)
|
||
throw_exception (std::move (file_exception));
|
||
|
||
/* Otherwise, the symbol is not found. */
|
||
symbol_not_found_error (PARSER_EXPLICIT (parser)->function_name,
|
||
PARSER_EXPLICIT (parser)->source_filename);
|
||
}
|
||
|
||
convert_to_sals:
|
||
|
||
/* Get the last token and record how much of the input was parsed,
|
||
if necessary. */
|
||
token = linespec_lexer_lex_one (parser);
|
||
if (token.type != LSTOKEN_EOI && token.type != LSTOKEN_KEYWORD)
|
||
unexpected_linespec_error (parser);
|
||
else if (token.type == LSTOKEN_KEYWORD)
|
||
{
|
||
/* Setup the completion word past the keyword. Lexing never
|
||
advances past a keyword automatically, so skip it
|
||
manually. */
|
||
parser->completion_word
|
||
= skip_spaces (skip_to_space (PARSER_STREAM (parser)));
|
||
parser->complete_what = linespec_complete_what::EXPRESSION;
|
||
}
|
||
|
||
/* Convert the data in PARSER_RESULT to SALs. */
|
||
if (parser->completion_tracker == NULL)
|
||
return convert_linespec_to_sals (PARSER_STATE (parser),
|
||
PARSER_RESULT (parser));
|
||
|
||
return {};
|
||
}
|
||
|
||
|
||
/* A constructor for linespec_state. */
|
||
|
||
static void
|
||
linespec_state_constructor (struct linespec_state *self,
|
||
int flags, const struct language_defn *language,
|
||
struct program_space *search_pspace,
|
||
struct symtab *default_symtab,
|
||
int default_line,
|
||
struct linespec_result *canonical)
|
||
{
|
||
memset (self, 0, sizeof (*self));
|
||
self->language = language;
|
||
self->funfirstline = (flags & DECODE_LINE_FUNFIRSTLINE) ? 1 : 0;
|
||
self->list_mode = (flags & DECODE_LINE_LIST_MODE) ? 1 : 0;
|
||
self->search_pspace = search_pspace;
|
||
self->default_symtab = default_symtab;
|
||
self->default_line = default_line;
|
||
self->canonical = canonical;
|
||
self->program_space = current_program_space;
|
||
self->addr_set = htab_create_alloc (10, hash_address_entry, eq_address_entry,
|
||
xfree, xcalloc, xfree);
|
||
self->is_linespec = 0;
|
||
}
|
||
|
||
/* Initialize a new linespec parser. */
|
||
|
||
linespec_parser::linespec_parser (int flags,
|
||
const struct language_defn *language,
|
||
struct program_space *search_pspace,
|
||
struct symtab *default_symtab,
|
||
int default_line,
|
||
struct linespec_result *canonical)
|
||
{
|
||
lexer.current.type = LSTOKEN_CONSUMED;
|
||
PARSER_RESULT (this)->file_symtabs = new std::vector<symtab *> ();
|
||
PARSER_EXPLICIT (this)->func_name_match_type
|
||
= symbol_name_match_type::WILD;
|
||
PARSER_EXPLICIT (this)->line_offset.sign = LINE_OFFSET_UNKNOWN;
|
||
linespec_state_constructor (PARSER_STATE (this), flags, language,
|
||
search_pspace,
|
||
default_symtab, default_line, canonical);
|
||
}
|
||
|
||
/* A destructor for linespec_state. */
|
||
|
||
static void
|
||
linespec_state_destructor (struct linespec_state *self)
|
||
{
|
||
htab_delete (self->addr_set);
|
||
xfree (self->canonical_names);
|
||
}
|
||
|
||
/* Delete a linespec parser. */
|
||
|
||
linespec_parser::~linespec_parser ()
|
||
{
|
||
xfree (PARSER_EXPLICIT (this)->source_filename);
|
||
xfree (PARSER_EXPLICIT (this)->label_name);
|
||
xfree (PARSER_EXPLICIT (this)->function_name);
|
||
|
||
delete PARSER_RESULT (this)->file_symtabs;
|
||
delete PARSER_RESULT (this)->function_symbols;
|
||
delete PARSER_RESULT (this)->minimal_symbols;
|
||
delete PARSER_RESULT (this)->labels.label_symbols;
|
||
delete PARSER_RESULT (this)->labels.function_symbols;
|
||
|
||
linespec_state_destructor (PARSER_STATE (this));
|
||
}
|
||
|
||
/* See description in linespec.h. */
|
||
|
||
void
|
||
linespec_lex_to_end (const char **stringp)
|
||
{
|
||
linespec_token token;
|
||
const char *orig;
|
||
|
||
if (stringp == NULL || *stringp == NULL)
|
||
return;
|
||
|
||
linespec_parser parser (0, current_language, NULL, NULL, 0, NULL);
|
||
parser.lexer.saved_arg = *stringp;
|
||
PARSER_STREAM (&parser) = orig = *stringp;
|
||
|
||
do
|
||
{
|
||
/* Stop before any comma tokens; we need it to keep it
|
||
as the next token in the string. */
|
||
token = linespec_lexer_peek_token (&parser);
|
||
if (token.type == LSTOKEN_COMMA)
|
||
break;
|
||
token = linespec_lexer_consume_token (&parser);
|
||
}
|
||
while (token.type != LSTOKEN_EOI && token.type != LSTOKEN_KEYWORD);
|
||
|
||
*stringp += PARSER_STREAM (&parser) - orig;
|
||
}
|
||
|
||
/* See linespec.h. */
|
||
|
||
void
|
||
linespec_complete_function (completion_tracker &tracker,
|
||
const char *function,
|
||
symbol_name_match_type func_match_type,
|
||
const char *source_filename)
|
||
{
|
||
complete_symbol_mode mode = complete_symbol_mode::LINESPEC;
|
||
|
||
if (source_filename != NULL)
|
||
{
|
||
collect_file_symbol_completion_matches (tracker, mode, func_match_type,
|
||
function, function, source_filename);
|
||
}
|
||
else
|
||
{
|
||
collect_symbol_completion_matches (tracker, mode, func_match_type,
|
||
function, function);
|
||
|
||
}
|
||
}
|
||
|
||
/* Helper for complete_linespec to simplify it. SOURCE_FILENAME is
|
||
only meaningful if COMPONENT is FUNCTION. */
|
||
|
||
static void
|
||
complete_linespec_component (linespec_parser *parser,
|
||
completion_tracker &tracker,
|
||
const char *text,
|
||
linespec_complete_what component,
|
||
const char *source_filename)
|
||
{
|
||
if (component == linespec_complete_what::KEYWORD)
|
||
{
|
||
complete_on_enum (tracker, linespec_keywords, text, text);
|
||
}
|
||
else if (component == linespec_complete_what::EXPRESSION)
|
||
{
|
||
const char *word
|
||
= advance_to_expression_complete_word_point (tracker, text);
|
||
complete_expression (tracker, text, word);
|
||
}
|
||
else if (component == linespec_complete_what::FUNCTION)
|
||
{
|
||
completion_list fn_list;
|
||
|
||
symbol_name_match_type match_type
|
||
= PARSER_EXPLICIT (parser)->func_name_match_type;
|
||
linespec_complete_function (tracker, text, match_type, source_filename);
|
||
if (source_filename == NULL)
|
||
{
|
||
/* Haven't seen a source component, like in "b
|
||
file.c:function[TAB]". Maybe this wasn't a function, but
|
||
a filename instead, like "b file.[TAB]". */
|
||
fn_list = complete_source_filenames (text);
|
||
}
|
||
|
||
/* If we only have a single filename completion, append a ':' for
|
||
the user, since that's the only thing that can usefully follow
|
||
the filename. */
|
||
if (fn_list.size () == 1 && !tracker.have_completions ())
|
||
{
|
||
char *fn = fn_list[0].release ();
|
||
|
||
/* If we also need to append a quote char, it needs to be
|
||
appended before the ':'. Append it now, and make ':' the
|
||
new "quote" char. */
|
||
if (tracker.quote_char ())
|
||
{
|
||
char quote_char_str[2] = { (char) tracker.quote_char () };
|
||
|
||
fn = reconcat (fn, fn, quote_char_str, (char *) NULL);
|
||
tracker.set_quote_char (':');
|
||
}
|
||
else
|
||
fn = reconcat (fn, fn, ":", (char *) NULL);
|
||
fn_list[0].reset (fn);
|
||
|
||
/* Tell readline to skip appending a space. */
|
||
tracker.set_suppress_append_ws (true);
|
||
}
|
||
tracker.add_completions (std::move (fn_list));
|
||
}
|
||
}
|
||
|
||
/* Helper for linespec_complete_label. Find labels that match
|
||
LABEL_NAME in the function symbols listed in the PARSER, and add
|
||
them to the tracker. */
|
||
|
||
static void
|
||
complete_label (completion_tracker &tracker,
|
||
linespec_parser *parser,
|
||
const char *label_name)
|
||
{
|
||
std::vector<block_symbol> label_function_symbols;
|
||
std::vector<block_symbol> *labels
|
||
= find_label_symbols (PARSER_STATE (parser),
|
||
PARSER_RESULT (parser)->function_symbols,
|
||
&label_function_symbols,
|
||
label_name, true);
|
||
|
||
if (labels != nullptr)
|
||
{
|
||
for (const auto &label : *labels)
|
||
{
|
||
char *match = xstrdup (label.symbol->search_name ());
|
||
tracker.add_completion (gdb::unique_xmalloc_ptr<char> (match));
|
||
}
|
||
delete labels;
|
||
}
|
||
}
|
||
|
||
/* See linespec.h. */
|
||
|
||
void
|
||
linespec_complete_label (completion_tracker &tracker,
|
||
const struct language_defn *language,
|
||
const char *source_filename,
|
||
const char *function_name,
|
||
symbol_name_match_type func_name_match_type,
|
||
const char *label_name)
|
||
{
|
||
linespec_parser parser (0, language, NULL, NULL, 0, NULL);
|
||
|
||
line_offset unknown_offset = { 0, LINE_OFFSET_UNKNOWN };
|
||
|
||
try
|
||
{
|
||
convert_explicit_location_to_linespec (PARSER_STATE (&parser),
|
||
PARSER_RESULT (&parser),
|
||
source_filename,
|
||
function_name,
|
||
func_name_match_type,
|
||
NULL, unknown_offset);
|
||
}
|
||
catch (const gdb_exception_error &ex)
|
||
{
|
||
return;
|
||
}
|
||
|
||
complete_label (tracker, &parser, label_name);
|
||
}
|
||
|
||
/* See description in linespec.h. */
|
||
|
||
void
|
||
linespec_complete (completion_tracker &tracker, const char *text,
|
||
symbol_name_match_type match_type)
|
||
{
|
||
const char *orig = text;
|
||
|
||
linespec_parser parser (0, current_language, NULL, NULL, 0, NULL);
|
||
parser.lexer.saved_arg = text;
|
||
PARSER_EXPLICIT (&parser)->func_name_match_type = match_type;
|
||
PARSER_STREAM (&parser) = text;
|
||
|
||
parser.completion_tracker = &tracker;
|
||
PARSER_STATE (&parser)->is_linespec = 1;
|
||
|
||
/* Parse as much as possible. parser.completion_word will hold
|
||
furthest completion point we managed to parse to. */
|
||
try
|
||
{
|
||
parse_linespec (&parser, text, match_type);
|
||
}
|
||
catch (const gdb_exception_error &except)
|
||
{
|
||
}
|
||
|
||
if (parser.completion_quote_char != '\0'
|
||
&& parser.completion_quote_end != NULL
|
||
&& parser.completion_quote_end[1] == '\0')
|
||
{
|
||
/* If completing a quoted string with the cursor right at
|
||
terminating quote char, complete the completion word without
|
||
interpretation, so that readline advances the cursor one
|
||
whitespace past the quote, even if there's no match. This
|
||
makes these cases behave the same:
|
||
|
||
before: "b function()"
|
||
after: "b function() "
|
||
|
||
before: "b 'function()'"
|
||
after: "b 'function()' "
|
||
|
||
and trusts the user in this case:
|
||
|
||
before: "b 'not_loaded_function_yet()'"
|
||
after: "b 'not_loaded_function_yet()' "
|
||
*/
|
||
parser.complete_what = linespec_complete_what::NOTHING;
|
||
parser.completion_quote_char = '\0';
|
||
|
||
gdb::unique_xmalloc_ptr<char> text_copy
|
||
(xstrdup (parser.completion_word));
|
||
tracker.add_completion (std::move (text_copy));
|
||
}
|
||
|
||
tracker.set_quote_char (parser.completion_quote_char);
|
||
|
||
if (parser.complete_what == linespec_complete_what::LABEL)
|
||
{
|
||
parser.complete_what = linespec_complete_what::NOTHING;
|
||
|
||
const char *func_name = PARSER_EXPLICIT (&parser)->function_name;
|
||
|
||
std::vector<block_symbol> function_symbols;
|
||
std::vector<bound_minimal_symbol> minimal_symbols;
|
||
find_linespec_symbols (PARSER_STATE (&parser),
|
||
PARSER_RESULT (&parser)->file_symtabs,
|
||
func_name, match_type,
|
||
&function_symbols, &minimal_symbols);
|
||
|
||
PARSER_RESULT (&parser)->function_symbols
|
||
= new std::vector<block_symbol> (std::move (function_symbols));
|
||
PARSER_RESULT (&parser)->minimal_symbols
|
||
= new std::vector<bound_minimal_symbol> (std::move (minimal_symbols));
|
||
|
||
complete_label (tracker, &parser, parser.completion_word);
|
||
}
|
||
else if (parser.complete_what == linespec_complete_what::FUNCTION)
|
||
{
|
||
/* While parsing/lexing, we didn't know whether the completion
|
||
word completes to a unique function/source name already or
|
||
not.
|
||
|
||
E.g.:
|
||
"b function() <tab>"
|
||
may need to complete either to:
|
||
"b function() const"
|
||
or to:
|
||
"b function() if/thread/task"
|
||
|
||
Or, this:
|
||
"b foo t"
|
||
may need to complete either to:
|
||
"b foo template_fun<T>()"
|
||
with "foo" being the template function's return type, or to:
|
||
"b foo thread/task"
|
||
|
||
Or, this:
|
||
"b file<TAB>"
|
||
may need to complete either to a source file name:
|
||
"b file.c"
|
||
or this, also a filename, but a unique completion:
|
||
"b file.c:"
|
||
or to a function name:
|
||
"b file_function"
|
||
|
||
Address that by completing assuming source or function, and
|
||
seeing if we find a completion that matches exactly the
|
||
completion word. If so, then it must be a function (see note
|
||
below) and we advance the completion word to the end of input
|
||
and switch to KEYWORD completion mode.
|
||
|
||
Note: if we find a unique completion for a source filename,
|
||
then it won't match the completion word, because the LCD will
|
||
contain a trailing ':'. And if we're completing at or after
|
||
the ':', then complete_linespec_component won't try to
|
||
complete on source filenames. */
|
||
|
||
const char *word = parser.completion_word;
|
||
|
||
complete_linespec_component (&parser, tracker,
|
||
parser.completion_word,
|
||
linespec_complete_what::FUNCTION,
|
||
PARSER_EXPLICIT (&parser)->source_filename);
|
||
|
||
parser.complete_what = linespec_complete_what::NOTHING;
|
||
|
||
if (tracker.quote_char ())
|
||
{
|
||
/* The function/file name was not close-quoted, so this
|
||
can't be a keyword. Note: complete_linespec_component
|
||
may have swapped the original quote char for ':' when we
|
||
get here, but that still indicates the same. */
|
||
}
|
||
else if (!tracker.have_completions ())
|
||
{
|
||
size_t key_start;
|
||
size_t wordlen = strlen (parser.completion_word);
|
||
|
||
key_start
|
||
= string_find_incomplete_keyword_at_end (linespec_keywords,
|
||
parser.completion_word,
|
||
wordlen);
|
||
|
||
if (key_start != -1
|
||
|| (wordlen > 0
|
||
&& parser.completion_word[wordlen - 1] == ' '))
|
||
{
|
||
parser.completion_word += key_start;
|
||
parser.complete_what = linespec_complete_what::KEYWORD;
|
||
}
|
||
}
|
||
else if (tracker.completes_to_completion_word (word))
|
||
{
|
||
/* Skip the function and complete on keywords. */
|
||
parser.completion_word += strlen (word);
|
||
parser.complete_what = linespec_complete_what::KEYWORD;
|
||
tracker.discard_completions ();
|
||
}
|
||
}
|
||
|
||
tracker.advance_custom_word_point_by (parser.completion_word - orig);
|
||
|
||
complete_linespec_component (&parser, tracker,
|
||
parser.completion_word,
|
||
parser.complete_what,
|
||
PARSER_EXPLICIT (&parser)->source_filename);
|
||
|
||
/* If we're past the "filename:function:label:offset" linespec, and
|
||
didn't find any match, then assume the user might want to create
|
||
a pending breakpoint anyway and offer the keyword
|
||
completions. */
|
||
if (!parser.completion_quote_char
|
||
&& (parser.complete_what == linespec_complete_what::FUNCTION
|
||
|| parser.complete_what == linespec_complete_what::LABEL
|
||
|| parser.complete_what == linespec_complete_what::NOTHING)
|
||
&& !tracker.have_completions ())
|
||
{
|
||
const char *end
|
||
= parser.completion_word + strlen (parser.completion_word);
|
||
|
||
if (end > orig && end[-1] == ' ')
|
||
{
|
||
tracker.advance_custom_word_point_by (end - parser.completion_word);
|
||
|
||
complete_linespec_component (&parser, tracker, end,
|
||
linespec_complete_what::KEYWORD,
|
||
NULL);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* A helper function for decode_line_full and decode_line_1 to
|
||
turn LOCATION into std::vector<symtab_and_line>. */
|
||
|
||
static std::vector<symtab_and_line>
|
||
event_location_to_sals (linespec_parser *parser,
|
||
const struct event_location *location)
|
||
{
|
||
std::vector<symtab_and_line> result;
|
||
|
||
switch (event_location_type (location))
|
||
{
|
||
case LINESPEC_LOCATION:
|
||
{
|
||
PARSER_STATE (parser)->is_linespec = 1;
|
||
try
|
||
{
|
||
const linespec_location *ls = get_linespec_location (location);
|
||
result = parse_linespec (parser,
|
||
ls->spec_string, ls->match_type);
|
||
}
|
||
catch (const gdb_exception_error &except)
|
||
{
|
||
throw;
|
||
}
|
||
}
|
||
break;
|
||
|
||
case ADDRESS_LOCATION:
|
||
{
|
||
const char *addr_string = get_address_string_location (location);
|
||
CORE_ADDR addr = get_address_location (location);
|
||
|
||
if (addr_string != NULL)
|
||
{
|
||
addr = linespec_expression_to_pc (&addr_string);
|
||
if (PARSER_STATE (parser)->canonical != NULL)
|
||
PARSER_STATE (parser)->canonical->location
|
||
= copy_event_location (location);
|
||
}
|
||
|
||
result = convert_address_location_to_sals (PARSER_STATE (parser),
|
||
addr);
|
||
}
|
||
break;
|
||
|
||
case EXPLICIT_LOCATION:
|
||
{
|
||
const struct explicit_location *explicit_loc;
|
||
|
||
explicit_loc = get_explicit_location_const (location);
|
||
result = convert_explicit_location_to_sals (PARSER_STATE (parser),
|
||
PARSER_RESULT (parser),
|
||
explicit_loc);
|
||
}
|
||
break;
|
||
|
||
case PROBE_LOCATION:
|
||
/* Probes are handled by their own decoders. */
|
||
gdb_assert_not_reached ("attempt to decode probe location");
|
||
break;
|
||
|
||
default:
|
||
gdb_assert_not_reached ("unhandled event location type");
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
/* See linespec.h. */
|
||
|
||
void
|
||
decode_line_full (const struct event_location *location, int flags,
|
||
struct program_space *search_pspace,
|
||
struct symtab *default_symtab,
|
||
int default_line, struct linespec_result *canonical,
|
||
const char *select_mode,
|
||
const char *filter)
|
||
{
|
||
std::vector<const char *> filters;
|
||
struct linespec_state *state;
|
||
|
||
gdb_assert (canonical != NULL);
|
||
/* The filter only makes sense for 'all'. */
|
||
gdb_assert (filter == NULL || select_mode == multiple_symbols_all);
|
||
gdb_assert (select_mode == NULL
|
||
|| select_mode == multiple_symbols_all
|
||
|| select_mode == multiple_symbols_ask
|
||
|| select_mode == multiple_symbols_cancel);
|
||
gdb_assert ((flags & DECODE_LINE_LIST_MODE) == 0);
|
||
|
||
linespec_parser parser (flags, current_language,
|
||
search_pspace, default_symtab,
|
||
default_line, canonical);
|
||
|
||
scoped_restore_current_program_space restore_pspace;
|
||
|
||
std::vector<symtab_and_line> result = event_location_to_sals (&parser,
|
||
location);
|
||
state = PARSER_STATE (&parser);
|
||
|
||
gdb_assert (result.size () == 1 || canonical->pre_expanded);
|
||
canonical->pre_expanded = 1;
|
||
|
||
/* Arrange for allocated canonical names to be freed. */
|
||
std::vector<gdb::unique_xmalloc_ptr<char>> hold_names;
|
||
for (int i = 0; i < result.size (); ++i)
|
||
{
|
||
gdb_assert (state->canonical_names[i].suffix != NULL);
|
||
hold_names.emplace_back (state->canonical_names[i].suffix);
|
||
}
|
||
|
||
if (select_mode == NULL)
|
||
{
|
||
if (top_level_interpreter ()->interp_ui_out ()->is_mi_like_p ())
|
||
select_mode = multiple_symbols_all;
|
||
else
|
||
select_mode = multiple_symbols_select_mode ();
|
||
}
|
||
|
||
if (select_mode == multiple_symbols_all)
|
||
{
|
||
if (filter != NULL)
|
||
{
|
||
filters.push_back (filter);
|
||
filter_results (state, &result, filters);
|
||
}
|
||
else
|
||
convert_results_to_lsals (state, &result);
|
||
}
|
||
else
|
||
decode_line_2 (state, &result, select_mode);
|
||
}
|
||
|
||
/* See linespec.h. */
|
||
|
||
std::vector<symtab_and_line>
|
||
decode_line_1 (const struct event_location *location, int flags,
|
||
struct program_space *search_pspace,
|
||
struct symtab *default_symtab,
|
||
int default_line)
|
||
{
|
||
linespec_parser parser (flags, current_language,
|
||
search_pspace, default_symtab,
|
||
default_line, NULL);
|
||
|
||
scoped_restore_current_program_space restore_pspace;
|
||
|
||
return event_location_to_sals (&parser, location);
|
||
}
|
||
|
||
/* See linespec.h. */
|
||
|
||
std::vector<symtab_and_line>
|
||
decode_line_with_current_source (const char *string, int flags)
|
||
{
|
||
if (string == 0)
|
||
error (_("Empty line specification."));
|
||
|
||
/* We use whatever is set as the current source line. We do not try
|
||
and get a default source symtab+line or it will recursively call us! */
|
||
symtab_and_line cursal = get_current_source_symtab_and_line ();
|
||
|
||
event_location_up location = string_to_event_location (&string,
|
||
current_language);
|
||
std::vector<symtab_and_line> sals
|
||
= decode_line_1 (location.get (), flags, NULL, cursal.symtab, cursal.line);
|
||
|
||
if (*string)
|
||
error (_("Junk at end of line specification: %s"), string);
|
||
|
||
return sals;
|
||
}
|
||
|
||
/* See linespec.h. */
|
||
|
||
std::vector<symtab_and_line>
|
||
decode_line_with_last_displayed (const char *string, int flags)
|
||
{
|
||
if (string == 0)
|
||
error (_("Empty line specification."));
|
||
|
||
event_location_up location = string_to_event_location (&string,
|
||
current_language);
|
||
std::vector<symtab_and_line> sals
|
||
= (last_displayed_sal_is_valid ()
|
||
? decode_line_1 (location.get (), flags, NULL,
|
||
get_last_displayed_symtab (),
|
||
get_last_displayed_line ())
|
||
: decode_line_1 (location.get (), flags, NULL, NULL, 0));
|
||
|
||
if (*string)
|
||
error (_("Junk at end of line specification: %s"), string);
|
||
|
||
return sals;
|
||
}
|
||
|
||
|
||
|
||
/* First, some functions to initialize stuff at the beginning of the
|
||
function. */
|
||
|
||
static void
|
||
initialize_defaults (struct symtab **default_symtab, int *default_line)
|
||
{
|
||
if (*default_symtab == 0)
|
||
{
|
||
/* Use whatever we have for the default source line. We don't use
|
||
get_current_or_default_symtab_and_line as it can recurse and call
|
||
us back! */
|
||
struct symtab_and_line cursal =
|
||
get_current_source_symtab_and_line ();
|
||
|
||
*default_symtab = cursal.symtab;
|
||
*default_line = cursal.line;
|
||
}
|
||
}
|
||
|
||
|
||
|
||
/* Evaluate the expression pointed to by EXP_PTR into a CORE_ADDR,
|
||
advancing EXP_PTR past any parsed text. */
|
||
|
||
CORE_ADDR
|
||
linespec_expression_to_pc (const char **exp_ptr)
|
||
{
|
||
if (current_program_space->executing_startup)
|
||
/* The error message doesn't really matter, because this case
|
||
should only hit during breakpoint reset. */
|
||
throw_error (NOT_FOUND_ERROR, _("cannot evaluate expressions while "
|
||
"program space is in startup"));
|
||
|
||
(*exp_ptr)++;
|
||
return value_as_address (parse_to_comma_and_eval (exp_ptr));
|
||
}
|
||
|
||
|
||
|
||
/* Here's where we recognise an Objective-C Selector. An Objective C
|
||
selector may be implemented by more than one class, therefore it
|
||
may represent more than one method/function. This gives us a
|
||
situation somewhat analogous to C++ overloading. If there's more
|
||
than one method that could represent the selector, then use some of
|
||
the existing C++ code to let the user choose one. */
|
||
|
||
static std::vector<symtab_and_line>
|
||
decode_objc (struct linespec_state *self, linespec_p ls, const char *arg)
|
||
{
|
||
struct collect_info info;
|
||
std::vector<const char *> symbol_names;
|
||
const char *new_argptr;
|
||
|
||
info.state = self;
|
||
std::vector<symtab *> symtabs;
|
||
symtabs.push_back (nullptr);
|
||
|
||
info.file_symtabs = &symtabs;
|
||
|
||
std::vector<block_symbol> symbols;
|
||
info.result.symbols = &symbols;
|
||
std::vector<bound_minimal_symbol> minimal_symbols;
|
||
info.result.minimal_symbols = &minimal_symbols;
|
||
|
||
new_argptr = find_imps (arg, &symbol_names);
|
||
if (symbol_names.empty ())
|
||
return {};
|
||
|
||
add_all_symbol_names_from_pspace (&info, NULL, symbol_names,
|
||
FUNCTIONS_DOMAIN);
|
||
|
||
std::vector<symtab_and_line> values;
|
||
if (!symbols.empty () || !minimal_symbols.empty ())
|
||
{
|
||
char *saved_arg;
|
||
|
||
saved_arg = (char *) alloca (new_argptr - arg + 1);
|
||
memcpy (saved_arg, arg, new_argptr - arg);
|
||
saved_arg[new_argptr - arg] = '\0';
|
||
|
||
ls->explicit_loc.function_name = xstrdup (saved_arg);
|
||
ls->function_symbols
|
||
= new std::vector<block_symbol> (std::move (symbols));
|
||
ls->minimal_symbols
|
||
= new std::vector<bound_minimal_symbol> (std::move (minimal_symbols));
|
||
values = convert_linespec_to_sals (self, ls);
|
||
|
||
if (self->canonical)
|
||
{
|
||
std::string holder;
|
||
const char *str;
|
||
|
||
self->canonical->pre_expanded = 1;
|
||
|
||
if (ls->explicit_loc.source_filename)
|
||
{
|
||
holder = string_printf ("%s:%s",
|
||
ls->explicit_loc.source_filename,
|
||
saved_arg);
|
||
str = holder.c_str ();
|
||
}
|
||
else
|
||
str = saved_arg;
|
||
|
||
self->canonical->location
|
||
= new_linespec_location (&str, symbol_name_match_type::FULL);
|
||
}
|
||
}
|
||
|
||
return values;
|
||
}
|
||
|
||
namespace {
|
||
|
||
/* A function object that serves as symbol_found_callback_ftype
|
||
callback for iterate_over_symbols. This is used by
|
||
lookup_prefix_sym to collect type symbols. */
|
||
class decode_compound_collector
|
||
{
|
||
public:
|
||
decode_compound_collector ()
|
||
{
|
||
m_unique_syms = htab_create_alloc (1, htab_hash_pointer,
|
||
htab_eq_pointer, NULL,
|
||
xcalloc, xfree);
|
||
}
|
||
|
||
~decode_compound_collector ()
|
||
{
|
||
if (m_unique_syms != NULL)
|
||
htab_delete (m_unique_syms);
|
||
}
|
||
|
||
/* Return all symbols collected. */
|
||
std::vector<block_symbol> release_symbols ()
|
||
{
|
||
return std::move (m_symbols);
|
||
}
|
||
|
||
/* Callable as a symbol_found_callback_ftype callback. */
|
||
bool operator () (block_symbol *bsym);
|
||
|
||
private:
|
||
/* A hash table of all symbols we found. We use this to avoid
|
||
adding any symbol more than once. */
|
||
htab_t m_unique_syms;
|
||
|
||
/* The result vector. */
|
||
std::vector<block_symbol> m_symbols;
|
||
};
|
||
|
||
bool
|
||
decode_compound_collector::operator () (block_symbol *bsym)
|
||
{
|
||
void **slot;
|
||
struct type *t;
|
||
struct symbol *sym = bsym->symbol;
|
||
|
||
if (SYMBOL_CLASS (sym) != LOC_TYPEDEF)
|
||
return true; /* Continue iterating. */
|
||
|
||
t = SYMBOL_TYPE (sym);
|
||
t = check_typedef (t);
|
||
if (TYPE_CODE (t) != TYPE_CODE_STRUCT
|
||
&& TYPE_CODE (t) != TYPE_CODE_UNION
|
||
&& TYPE_CODE (t) != TYPE_CODE_NAMESPACE)
|
||
return true; /* Continue iterating. */
|
||
|
||
slot = htab_find_slot (m_unique_syms, sym, INSERT);
|
||
if (!*slot)
|
||
{
|
||
*slot = sym;
|
||
m_symbols.push_back (*bsym);
|
||
}
|
||
|
||
return true; /* Continue iterating. */
|
||
}
|
||
|
||
} // namespace
|
||
|
||
/* Return any symbols corresponding to CLASS_NAME in FILE_SYMTABS. */
|
||
|
||
static std::vector<block_symbol>
|
||
lookup_prefix_sym (struct linespec_state *state,
|
||
std::vector<symtab *> *file_symtabs,
|
||
const char *class_name)
|
||
{
|
||
decode_compound_collector collector;
|
||
|
||
lookup_name_info lookup_name (class_name, symbol_name_match_type::FULL);
|
||
|
||
for (const auto &elt : *file_symtabs)
|
||
{
|
||
if (elt == nullptr)
|
||
{
|
||
iterate_over_all_matching_symtabs (state, lookup_name,
|
||
STRUCT_DOMAIN, ALL_DOMAIN,
|
||
NULL, false, collector);
|
||
iterate_over_all_matching_symtabs (state, lookup_name,
|
||
VAR_DOMAIN, ALL_DOMAIN,
|
||
NULL, false, collector);
|
||
}
|
||
else
|
||
{
|
||
/* Program spaces that are executing startup should have
|
||
been filtered out earlier. */
|
||
gdb_assert (!SYMTAB_PSPACE (elt)->executing_startup);
|
||
set_current_program_space (SYMTAB_PSPACE (elt));
|
||
iterate_over_file_blocks (elt, lookup_name, STRUCT_DOMAIN, collector);
|
||
iterate_over_file_blocks (elt, lookup_name, VAR_DOMAIN, collector);
|
||
}
|
||
}
|
||
|
||
return collector.release_symbols ();
|
||
}
|
||
|
||
/* A std::sort comparison function for symbols. The resulting order does
|
||
not actually matter; we just need to be able to sort them so that
|
||
symbols with the same program space end up next to each other. */
|
||
|
||
static bool
|
||
compare_symbols (const block_symbol &a, const block_symbol &b)
|
||
{
|
||
uintptr_t uia, uib;
|
||
|
||
uia = (uintptr_t) SYMTAB_PSPACE (symbol_symtab (a.symbol));
|
||
uib = (uintptr_t) SYMTAB_PSPACE (symbol_symtab (b.symbol));
|
||
|
||
if (uia < uib)
|
||
return true;
|
||
if (uia > uib)
|
||
return false;
|
||
|
||
uia = (uintptr_t) a.symbol;
|
||
uib = (uintptr_t) b.symbol;
|
||
|
||
if (uia < uib)
|
||
return true;
|
||
|
||
return false;
|
||
}
|
||
|
||
/* Like compare_symbols but for minimal symbols. */
|
||
|
||
static bool
|
||
compare_msymbols (const bound_minimal_symbol &a, const bound_minimal_symbol &b)
|
||
{
|
||
uintptr_t uia, uib;
|
||
|
||
uia = (uintptr_t) a.objfile->pspace;
|
||
uib = (uintptr_t) a.objfile->pspace;
|
||
|
||
if (uia < uib)
|
||
return true;
|
||
if (uia > uib)
|
||
return false;
|
||
|
||
uia = (uintptr_t) a.minsym;
|
||
uib = (uintptr_t) b.minsym;
|
||
|
||
if (uia < uib)
|
||
return true;
|
||
|
||
return false;
|
||
}
|
||
|
||
/* Look for all the matching instances of each symbol in NAMES. Only
|
||
instances from PSPACE are considered; other program spaces are
|
||
handled by our caller. If PSPACE is NULL, then all program spaces
|
||
are considered. Results are stored into INFO. */
|
||
|
||
static void
|
||
add_all_symbol_names_from_pspace (struct collect_info *info,
|
||
struct program_space *pspace,
|
||
const std::vector<const char *> &names,
|
||
enum search_domain search_domain)
|
||
{
|
||
for (const char *iter : names)
|
||
add_matching_symbols_to_info (iter,
|
||
symbol_name_match_type::FULL,
|
||
search_domain, info, pspace);
|
||
}
|
||
|
||
static void
|
||
find_superclass_methods (std::vector<struct type *> &&superclasses,
|
||
const char *name, enum language name_lang,
|
||
std::vector<const char *> *result_names)
|
||
{
|
||
size_t old_len = result_names->size ();
|
||
|
||
while (1)
|
||
{
|
||
std::vector<struct type *> new_supers;
|
||
|
||
for (type *t : superclasses)
|
||
find_methods (t, name_lang, name, result_names, &new_supers);
|
||
|
||
if (result_names->size () != old_len || new_supers.empty ())
|
||
break;
|
||
|
||
superclasses = std::move (new_supers);
|
||
}
|
||
}
|
||
|
||
/* This finds the method METHOD_NAME in the class CLASS_NAME whose type is
|
||
given by one of the symbols in SYM_CLASSES. Matches are returned
|
||
in SYMBOLS (for debug symbols) and MINSYMS (for minimal symbols). */
|
||
|
||
static void
|
||
find_method (struct linespec_state *self, std::vector<symtab *> *file_symtabs,
|
||
const char *class_name, const char *method_name,
|
||
std::vector<block_symbol> *sym_classes,
|
||
std::vector<block_symbol> *symbols,
|
||
std::vector<bound_minimal_symbol> *minsyms)
|
||
{
|
||
size_t last_result_len;
|
||
std::vector<struct type *> superclass_vec;
|
||
std::vector<const char *> result_names;
|
||
struct collect_info info;
|
||
|
||
/* Sort symbols so that symbols with the same program space are next
|
||
to each other. */
|
||
std::sort (sym_classes->begin (), sym_classes->end (),
|
||
compare_symbols);
|
||
|
||
info.state = self;
|
||
info.file_symtabs = file_symtabs;
|
||
info.result.symbols = symbols;
|
||
info.result.minimal_symbols = minsyms;
|
||
|
||
/* Iterate over all the types, looking for the names of existing
|
||
methods matching METHOD_NAME. If we cannot find a direct method in a
|
||
given program space, then we consider inherited methods; this is
|
||
not ideal (ideal would be to respect C++ hiding rules), but it
|
||
seems good enough and is what GDB has historically done. We only
|
||
need to collect the names because later we find all symbols with
|
||
those names. This loop is written in a somewhat funny way
|
||
because we collect data across the program space before deciding
|
||
what to do. */
|
||
last_result_len = 0;
|
||
unsigned int ix = 0;
|
||
for (const auto &elt : *sym_classes)
|
||
{
|
||
struct type *t;
|
||
struct program_space *pspace;
|
||
struct symbol *sym = elt.symbol;
|
||
|
||
/* Program spaces that are executing startup should have
|
||
been filtered out earlier. */
|
||
pspace = SYMTAB_PSPACE (symbol_symtab (sym));
|
||
gdb_assert (!pspace->executing_startup);
|
||
set_current_program_space (pspace);
|
||
t = check_typedef (SYMBOL_TYPE (sym));
|
||
find_methods (t, sym->language (),
|
||
method_name, &result_names, &superclass_vec);
|
||
|
||
/* Handle all items from a single program space at once; and be
|
||
sure not to miss the last batch. */
|
||
if (ix == sym_classes->size () - 1
|
||
|| (pspace
|
||
!= SYMTAB_PSPACE (symbol_symtab (sym_classes->at (ix + 1).symbol))))
|
||
{
|
||
/* If we did not find a direct implementation anywhere in
|
||
this program space, consider superclasses. */
|
||
if (result_names.size () == last_result_len)
|
||
find_superclass_methods (std::move (superclass_vec), method_name,
|
||
sym->language (), &result_names);
|
||
|
||
/* We have a list of candidate symbol names, so now we
|
||
iterate over the symbol tables looking for all
|
||
matches in this pspace. */
|
||
add_all_symbol_names_from_pspace (&info, pspace, result_names,
|
||
FUNCTIONS_DOMAIN);
|
||
|
||
superclass_vec.clear ();
|
||
last_result_len = result_names.size ();
|
||
++ix;
|
||
}
|
||
}
|
||
|
||
if (!symbols->empty () || !minsyms->empty ())
|
||
return;
|
||
|
||
/* Throw an NOT_FOUND_ERROR. This will be caught by the caller
|
||
and other attempts to locate the symbol will be made. */
|
||
throw_error (NOT_FOUND_ERROR, _("see caller, this text doesn't matter"));
|
||
}
|
||
|
||
|
||
|
||
namespace {
|
||
|
||
/* This function object is a callback for iterate_over_symtabs, used
|
||
when collecting all matching symtabs. */
|
||
|
||
class symtab_collector
|
||
{
|
||
public:
|
||
symtab_collector ()
|
||
{
|
||
m_symtab_table = htab_create (1, htab_hash_pointer, htab_eq_pointer,
|
||
NULL);
|
||
}
|
||
|
||
~symtab_collector ()
|
||
{
|
||
if (m_symtab_table != NULL)
|
||
htab_delete (m_symtab_table);
|
||
}
|
||
|
||
/* Callable as a symbol_found_callback_ftype callback. */
|
||
bool operator () (symtab *sym);
|
||
|
||
/* Return an rvalue reference to the collected symtabs. */
|
||
std::vector<symtab *> &&release_symtabs ()
|
||
{
|
||
return std::move (m_symtabs);
|
||
}
|
||
|
||
private:
|
||
/* The result vector of symtabs. */
|
||
std::vector<symtab *> m_symtabs;
|
||
|
||
/* This is used to ensure the symtabs are unique. */
|
||
htab_t m_symtab_table;
|
||
};
|
||
|
||
bool
|
||
symtab_collector::operator () (struct symtab *symtab)
|
||
{
|
||
void **slot;
|
||
|
||
slot = htab_find_slot (m_symtab_table, symtab, INSERT);
|
||
if (!*slot)
|
||
{
|
||
*slot = symtab;
|
||
m_symtabs.push_back (symtab);
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
} // namespace
|
||
|
||
/* Given a file name, return a list of all matching symtabs. If
|
||
SEARCH_PSPACE is not NULL, the search is restricted to just that
|
||
program space. */
|
||
|
||
static std::vector<symtab *>
|
||
collect_symtabs_from_filename (const char *file,
|
||
struct program_space *search_pspace)
|
||
{
|
||
symtab_collector collector;
|
||
|
||
/* Find that file's data. */
|
||
if (search_pspace == NULL)
|
||
{
|
||
struct program_space *pspace;
|
||
|
||
ALL_PSPACES (pspace)
|
||
{
|
||
if (pspace->executing_startup)
|
||
continue;
|
||
|
||
set_current_program_space (pspace);
|
||
iterate_over_symtabs (file, collector);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
set_current_program_space (search_pspace);
|
||
iterate_over_symtabs (file, collector);
|
||
}
|
||
|
||
return collector.release_symtabs ();
|
||
}
|
||
|
||
/* Return all the symtabs associated to the FILENAME. If SEARCH_PSPACE is
|
||
not NULL, the search is restricted to just that program space. */
|
||
|
||
static std::vector<symtab *>
|
||
symtabs_from_filename (const char *filename,
|
||
struct program_space *search_pspace)
|
||
{
|
||
std::vector<symtab *> result
|
||
= collect_symtabs_from_filename (filename, search_pspace);
|
||
|
||
if (result.empty ())
|
||
{
|
||
if (!have_full_symbols () && !have_partial_symbols ())
|
||
throw_error (NOT_FOUND_ERROR,
|
||
_("No symbol table is loaded. "
|
||
"Use the \"file\" command."));
|
||
source_file_not_found_error (filename);
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
/* See symtab.h. */
|
||
|
||
void
|
||
symbol_searcher::find_all_symbols (const std::string &name,
|
||
const struct language_defn *language,
|
||
enum search_domain search_domain,
|
||
std::vector<symtab *> *search_symtabs,
|
||
struct program_space *search_pspace)
|
||
{
|
||
symbol_searcher_collect_info info;
|
||
struct linespec_state state;
|
||
|
||
memset (&state, 0, sizeof (state));
|
||
state.language = language;
|
||
info.state = &state;
|
||
|
||
info.result.symbols = &m_symbols;
|
||
info.result.minimal_symbols = &m_minimal_symbols;
|
||
std::vector<symtab *> all_symtabs;
|
||
if (search_symtabs == nullptr)
|
||
{
|
||
all_symtabs.push_back (nullptr);
|
||
search_symtabs = &all_symtabs;
|
||
}
|
||
info.file_symtabs = search_symtabs;
|
||
|
||
add_matching_symbols_to_info (name.c_str (), symbol_name_match_type::WILD,
|
||
search_domain, &info, search_pspace);
|
||
}
|
||
|
||
/* Look up a function symbol named NAME in symtabs FILE_SYMTABS. Matching
|
||
debug symbols are returned in SYMBOLS. Matching minimal symbols are
|
||
returned in MINSYMS. */
|
||
|
||
static void
|
||
find_function_symbols (struct linespec_state *state,
|
||
std::vector<symtab *> *file_symtabs, const char *name,
|
||
symbol_name_match_type name_match_type,
|
||
std::vector<block_symbol> *symbols,
|
||
std::vector<bound_minimal_symbol> *minsyms)
|
||
{
|
||
struct collect_info info;
|
||
std::vector<const char *> symbol_names;
|
||
|
||
info.state = state;
|
||
info.result.symbols = symbols;
|
||
info.result.minimal_symbols = minsyms;
|
||
info.file_symtabs = file_symtabs;
|
||
|
||
/* Try NAME as an Objective-C selector. */
|
||
find_imps (name, &symbol_names);
|
||
if (!symbol_names.empty ())
|
||
add_all_symbol_names_from_pspace (&info, state->search_pspace,
|
||
symbol_names, FUNCTIONS_DOMAIN);
|
||
else
|
||
add_matching_symbols_to_info (name, name_match_type, FUNCTIONS_DOMAIN,
|
||
&info, state->search_pspace);
|
||
}
|
||
|
||
/* Find all symbols named NAME in FILE_SYMTABS, returning debug symbols
|
||
in SYMBOLS and minimal symbols in MINSYMS. */
|
||
|
||
static void
|
||
find_linespec_symbols (struct linespec_state *state,
|
||
std::vector<symtab *> *file_symtabs,
|
||
const char *lookup_name,
|
||
symbol_name_match_type name_match_type,
|
||
std::vector <block_symbol> *symbols,
|
||
std::vector<bound_minimal_symbol> *minsyms)
|
||
{
|
||
std::string canon = cp_canonicalize_string_no_typedefs (lookup_name);
|
||
if (!canon.empty ())
|
||
lookup_name = canon.c_str ();
|
||
|
||
/* It's important to not call expand_symtabs_matching unnecessarily
|
||
as it can really slow things down (by unnecessarily expanding
|
||
potentially 1000s of symtabs, which when debugging some apps can
|
||
cost 100s of seconds). Avoid this to some extent by *first* calling
|
||
find_function_symbols, and only if that doesn't find anything
|
||
*then* call find_method. This handles two important cases:
|
||
1) break (anonymous namespace)::foo
|
||
2) break class::method where method is in class (and not a baseclass) */
|
||
|
||
find_function_symbols (state, file_symtabs, lookup_name,
|
||
name_match_type, symbols, minsyms);
|
||
|
||
/* If we were unable to locate a symbol of the same name, try dividing
|
||
the name into class and method names and searching the class and its
|
||
baseclasses. */
|
||
if (symbols->empty () && minsyms->empty ())
|
||
{
|
||
std::string klass, method;
|
||
const char *last, *p, *scope_op;
|
||
|
||
/* See if we can find a scope operator and break this symbol
|
||
name into namespaces${SCOPE_OPERATOR}class_name and method_name. */
|
||
scope_op = "::";
|
||
p = find_toplevel_string (lookup_name, scope_op);
|
||
|
||
last = NULL;
|
||
while (p != NULL)
|
||
{
|
||
last = p;
|
||
p = find_toplevel_string (p + strlen (scope_op), scope_op);
|
||
}
|
||
|
||
/* If no scope operator was found, there is nothing more we can do;
|
||
we already attempted to lookup the entire name as a symbol
|
||
and failed. */
|
||
if (last == NULL)
|
||
return;
|
||
|
||
/* LOOKUP_NAME points to the class name.
|
||
LAST points to the method name. */
|
||
klass = std::string (lookup_name, last - lookup_name);
|
||
|
||
/* Skip past the scope operator. */
|
||
last += strlen (scope_op);
|
||
method = last;
|
||
|
||
/* Find a list of classes named KLASS. */
|
||
std::vector<block_symbol> classes
|
||
= lookup_prefix_sym (state, file_symtabs, klass.c_str ());
|
||
if (!classes.empty ())
|
||
{
|
||
/* Now locate a list of suitable methods named METHOD. */
|
||
try
|
||
{
|
||
find_method (state, file_symtabs,
|
||
klass.c_str (), method.c_str (),
|
||
&classes, symbols, minsyms);
|
||
}
|
||
|
||
/* If successful, we're done. If NOT_FOUND_ERROR
|
||
was not thrown, rethrow the exception that we did get. */
|
||
catch (const gdb_exception_error &except)
|
||
{
|
||
if (except.error != NOT_FOUND_ERROR)
|
||
throw;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Helper for find_label_symbols. Find all labels that match name
|
||
NAME in BLOCK. Return all labels that match in FUNCTION_SYMBOLS.
|
||
Return the actual function symbol in which the label was found in
|
||
LABEL_FUNC_RET. If COMPLETION_MODE is true, then NAME is
|
||
interpreted as a label name prefix. Otherwise, only a label named
|
||
exactly NAME match. */
|
||
|
||
static void
|
||
find_label_symbols_in_block (const struct block *block,
|
||
const char *name, struct symbol *fn_sym,
|
||
bool completion_mode,
|
||
std::vector<block_symbol> *result,
|
||
std::vector<block_symbol> *label_funcs_ret)
|
||
{
|
||
if (completion_mode)
|
||
{
|
||
struct block_iterator iter;
|
||
struct symbol *sym;
|
||
size_t name_len = strlen (name);
|
||
|
||
int (*cmp) (const char *, const char *, size_t);
|
||
cmp = case_sensitivity == case_sensitive_on ? strncmp : strncasecmp;
|
||
|
||
ALL_BLOCK_SYMBOLS (block, iter, sym)
|
||
{
|
||
if (symbol_matches_domain (sym->language (),
|
||
SYMBOL_DOMAIN (sym), LABEL_DOMAIN)
|
||
&& cmp (sym->search_name (), name, name_len) == 0)
|
||
{
|
||
result->push_back ({sym, block});
|
||
label_funcs_ret->push_back ({fn_sym, block});
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
struct block_symbol label_sym
|
||
= lookup_symbol (name, block, LABEL_DOMAIN, 0);
|
||
|
||
if (label_sym.symbol != NULL)
|
||
{
|
||
result->push_back (label_sym);
|
||
label_funcs_ret->push_back ({fn_sym, block});
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Return all labels that match name NAME in FUNCTION_SYMBOLS or NULL
|
||
if no matches were found.
|
||
|
||
Return the actual function symbol in which the label was found in
|
||
LABEL_FUNC_RET. If COMPLETION_MODE is true, then NAME is
|
||
interpreted as a label name prefix. Otherwise, only labels named
|
||
exactly NAME match. */
|
||
|
||
|
||
static std::vector<block_symbol> *
|
||
find_label_symbols (struct linespec_state *self,
|
||
std::vector<block_symbol> *function_symbols,
|
||
std::vector<block_symbol> *label_funcs_ret,
|
||
const char *name,
|
||
bool completion_mode)
|
||
{
|
||
const struct block *block;
|
||
struct symbol *fn_sym;
|
||
std::vector<block_symbol> result;
|
||
|
||
if (function_symbols == NULL)
|
||
{
|
||
set_current_program_space (self->program_space);
|
||
block = get_current_search_block ();
|
||
|
||
for (;
|
||
block && !BLOCK_FUNCTION (block);
|
||
block = BLOCK_SUPERBLOCK (block))
|
||
;
|
||
if (!block)
|
||
return NULL;
|
||
fn_sym = BLOCK_FUNCTION (block);
|
||
|
||
find_label_symbols_in_block (block, name, fn_sym, completion_mode,
|
||
&result, label_funcs_ret);
|
||
}
|
||
else
|
||
{
|
||
for (const auto &elt : *function_symbols)
|
||
{
|
||
fn_sym = elt.symbol;
|
||
set_current_program_space (SYMTAB_PSPACE (symbol_symtab (fn_sym)));
|
||
block = SYMBOL_BLOCK_VALUE (fn_sym);
|
||
|
||
find_label_symbols_in_block (block, name, fn_sym, completion_mode,
|
||
&result, label_funcs_ret);
|
||
}
|
||
}
|
||
|
||
if (!result.empty ())
|
||
return new std::vector<block_symbol> (std::move (result));
|
||
return nullptr;
|
||
}
|
||
|
||
|
||
|
||
/* A helper for create_sals_line_offset that handles the 'list_mode' case. */
|
||
|
||
static std::vector<symtab_and_line>
|
||
decode_digits_list_mode (struct linespec_state *self,
|
||
linespec_p ls,
|
||
struct symtab_and_line val)
|
||
{
|
||
gdb_assert (self->list_mode);
|
||
|
||
std::vector<symtab_and_line> values;
|
||
|
||
for (const auto &elt : *ls->file_symtabs)
|
||
{
|
||
/* The logic above should ensure this. */
|
||
gdb_assert (elt != NULL);
|
||
|
||
set_current_program_space (SYMTAB_PSPACE (elt));
|
||
|
||
/* Simplistic search just for the list command. */
|
||
val.symtab = find_line_symtab (elt, val.line, NULL, NULL);
|
||
if (val.symtab == NULL)
|
||
val.symtab = elt;
|
||
val.pspace = SYMTAB_PSPACE (elt);
|
||
val.pc = 0;
|
||
val.explicit_line = true;
|
||
|
||
add_sal_to_sals (self, &values, &val, NULL, 0);
|
||
}
|
||
|
||
return values;
|
||
}
|
||
|
||
/* A helper for create_sals_line_offset that iterates over the symtabs
|
||
associated with LS and returns a vector of corresponding symtab_and_line
|
||
structures. */
|
||
|
||
static std::vector<symtab_and_line>
|
||
decode_digits_ordinary (struct linespec_state *self,
|
||
linespec_p ls,
|
||
int line,
|
||
struct linetable_entry **best_entry)
|
||
{
|
||
std::vector<symtab_and_line> sals;
|
||
for (const auto &elt : *ls->file_symtabs)
|
||
{
|
||
std::vector<CORE_ADDR> pcs;
|
||
|
||
/* The logic above should ensure this. */
|
||
gdb_assert (elt != NULL);
|
||
|
||
set_current_program_space (SYMTAB_PSPACE (elt));
|
||
|
||
pcs = find_pcs_for_symtab_line (elt, line, best_entry);
|
||
for (CORE_ADDR pc : pcs)
|
||
{
|
||
symtab_and_line sal;
|
||
sal.pspace = SYMTAB_PSPACE (elt);
|
||
sal.symtab = elt;
|
||
sal.line = line;
|
||
sal.explicit_line = true;
|
||
sal.pc = pc;
|
||
sals.push_back (std::move (sal));
|
||
}
|
||
}
|
||
|
||
return sals;
|
||
}
|
||
|
||
|
||
|
||
/* Return the line offset represented by VARIABLE. */
|
||
|
||
static struct line_offset
|
||
linespec_parse_variable (struct linespec_state *self, const char *variable)
|
||
{
|
||
int index = 0;
|
||
const char *p;
|
||
struct line_offset offset = {0, LINE_OFFSET_NONE};
|
||
|
||
p = (variable[1] == '$') ? variable + 2 : variable + 1;
|
||
if (*p == '$')
|
||
++p;
|
||
while (*p >= '0' && *p <= '9')
|
||
++p;
|
||
if (!*p) /* Reached end of token without hitting non-digit. */
|
||
{
|
||
/* We have a value history reference. */
|
||
struct value *val_history;
|
||
|
||
sscanf ((variable[1] == '$') ? variable + 2 : variable + 1, "%d", &index);
|
||
val_history
|
||
= access_value_history ((variable[1] == '$') ? -index : index);
|
||
if (TYPE_CODE (value_type (val_history)) != TYPE_CODE_INT)
|
||
error (_("History values used in line "
|
||
"specs must have integer values."));
|
||
offset.offset = value_as_long (val_history);
|
||
}
|
||
else
|
||
{
|
||
/* Not all digits -- may be user variable/function or a
|
||
convenience variable. */
|
||
LONGEST valx;
|
||
struct internalvar *ivar;
|
||
|
||
/* Try it as a convenience variable. If it is not a convenience
|
||
variable, return and allow normal symbol lookup to occur. */
|
||
ivar = lookup_only_internalvar (variable + 1);
|
||
if (ivar == NULL)
|
||
/* No internal variable with that name. Mark the offset
|
||
as unknown to allow the name to be looked up as a symbol. */
|
||
offset.sign = LINE_OFFSET_UNKNOWN;
|
||
else
|
||
{
|
||
/* We found a valid variable name. If it is not an integer,
|
||
throw an error. */
|
||
if (!get_internalvar_integer (ivar, &valx))
|
||
error (_("Convenience variables used in line "
|
||
"specs must have integer values."));
|
||
else
|
||
offset.offset = valx;
|
||
}
|
||
}
|
||
|
||
return offset;
|
||
}
|
||
|
||
|
||
/* We've found a minimal symbol MSYMBOL in OBJFILE to associate with our
|
||
linespec; return the SAL in RESULT. This function should return SALs
|
||
matching those from find_function_start_sal, otherwise false
|
||
multiple-locations breakpoints could be placed. */
|
||
|
||
static void
|
||
minsym_found (struct linespec_state *self, struct objfile *objfile,
|
||
struct minimal_symbol *msymbol,
|
||
std::vector<symtab_and_line> *result)
|
||
{
|
||
bool want_start_sal;
|
||
|
||
CORE_ADDR func_addr;
|
||
bool is_function = msymbol_is_function (objfile, msymbol, &func_addr);
|
||
|
||
if (is_function)
|
||
{
|
||
const char *msym_name = msymbol->linkage_name ();
|
||
|
||
if (MSYMBOL_TYPE (msymbol) == mst_text_gnu_ifunc
|
||
|| MSYMBOL_TYPE (msymbol) == mst_data_gnu_ifunc)
|
||
want_start_sal = gnu_ifunc_resolve_name (msym_name, &func_addr);
|
||
else
|
||
want_start_sal = true;
|
||
}
|
||
|
||
symtab_and_line sal;
|
||
|
||
if (is_function && want_start_sal)
|
||
sal = find_function_start_sal (func_addr, NULL, self->funfirstline);
|
||
else
|
||
{
|
||
sal.objfile = objfile;
|
||
sal.msymbol = msymbol;
|
||
/* Store func_addr, not the minsym's address in case this was an
|
||
ifunc that hasn't been resolved yet. */
|
||
if (is_function)
|
||
sal.pc = func_addr;
|
||
else
|
||
sal.pc = MSYMBOL_VALUE_ADDRESS (objfile, msymbol);
|
||
sal.pspace = current_program_space;
|
||
}
|
||
|
||
sal.section = MSYMBOL_OBJ_SECTION (objfile, msymbol);
|
||
|
||
if (maybe_add_address (self->addr_set, objfile->pspace, sal.pc))
|
||
add_sal_to_sals (self, result, &sal, msymbol->natural_name (), 0);
|
||
}
|
||
|
||
/* A helper function to classify a minimal_symbol_type according to
|
||
priority. */
|
||
|
||
static int
|
||
classify_mtype (enum minimal_symbol_type t)
|
||
{
|
||
switch (t)
|
||
{
|
||
case mst_file_text:
|
||
case mst_file_data:
|
||
case mst_file_bss:
|
||
/* Intermediate priority. */
|
||
return 1;
|
||
|
||
case mst_solib_trampoline:
|
||
/* Lowest priority. */
|
||
return 2;
|
||
|
||
default:
|
||
/* Highest priority. */
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
/* Callback for std::sort that sorts symbols by priority. */
|
||
|
||
static bool
|
||
compare_msyms (const bound_minimal_symbol &a, const bound_minimal_symbol &b)
|
||
{
|
||
enum minimal_symbol_type ta = MSYMBOL_TYPE (a.minsym);
|
||
enum minimal_symbol_type tb = MSYMBOL_TYPE (b.minsym);
|
||
|
||
return classify_mtype (ta) < classify_mtype (tb);
|
||
}
|
||
|
||
/* Helper for search_minsyms_for_name that adds the symbol to the
|
||
result. */
|
||
|
||
static void
|
||
add_minsym (struct minimal_symbol *minsym, struct objfile *objfile,
|
||
struct symtab *symtab, int list_mode,
|
||
std::vector<struct bound_minimal_symbol> *msyms)
|
||
{
|
||
if (symtab != NULL)
|
||
{
|
||
/* We're looking for a label for which we don't have debug
|
||
info. */
|
||
CORE_ADDR func_addr;
|
||
if (msymbol_is_function (objfile, minsym, &func_addr))
|
||
{
|
||
symtab_and_line sal = find_pc_sect_line (func_addr, NULL, 0);
|
||
|
||
if (symtab != sal.symtab)
|
||
return;
|
||
}
|
||
}
|
||
|
||
/* Exclude data symbols when looking for breakpoint locations. */
|
||
if (!list_mode && !msymbol_is_function (objfile, minsym))
|
||
return;
|
||
|
||
struct bound_minimal_symbol mo = {minsym, objfile};
|
||
msyms->push_back (mo);
|
||
return;
|
||
}
|
||
|
||
/* Search for minimal symbols called NAME. If SEARCH_PSPACE
|
||
is not NULL, the search is restricted to just that program
|
||
space.
|
||
|
||
If SYMTAB is NULL, search all objfiles, otherwise
|
||
restrict results to the given SYMTAB. */
|
||
|
||
static void
|
||
search_minsyms_for_name (struct collect_info *info,
|
||
const lookup_name_info &name,
|
||
struct program_space *search_pspace,
|
||
struct symtab *symtab)
|
||
{
|
||
std::vector<struct bound_minimal_symbol> minsyms;
|
||
|
||
if (symtab == NULL)
|
||
{
|
||
struct program_space *pspace;
|
||
|
||
ALL_PSPACES (pspace)
|
||
{
|
||
if (search_pspace != NULL && search_pspace != pspace)
|
||
continue;
|
||
if (pspace->executing_startup)
|
||
continue;
|
||
|
||
set_current_program_space (pspace);
|
||
|
||
for (objfile *objfile : current_program_space->objfiles ())
|
||
{
|
||
iterate_over_minimal_symbols (objfile, name,
|
||
[&] (struct minimal_symbol *msym)
|
||
{
|
||
add_minsym (msym, objfile, nullptr,
|
||
info->state->list_mode,
|
||
&minsyms);
|
||
return false;
|
||
});
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (search_pspace == NULL || SYMTAB_PSPACE (symtab) == search_pspace)
|
||
{
|
||
set_current_program_space (SYMTAB_PSPACE (symtab));
|
||
iterate_over_minimal_symbols
|
||
(SYMTAB_OBJFILE (symtab), name,
|
||
[&] (struct minimal_symbol *msym)
|
||
{
|
||
add_minsym (msym, SYMTAB_OBJFILE (symtab), symtab,
|
||
info->state->list_mode, &minsyms);
|
||
return false;
|
||
});
|
||
}
|
||
}
|
||
|
||
if (!minsyms.empty ())
|
||
{
|
||
int classification;
|
||
|
||
std::sort (minsyms.begin (), minsyms.end (), compare_msyms);
|
||
|
||
/* Now the minsyms are in classification order. So, we walk
|
||
over them and process just the minsyms with the same
|
||
classification as the very first minsym in the list. */
|
||
classification = classify_mtype (MSYMBOL_TYPE (minsyms[0].minsym));
|
||
|
||
for (const bound_minimal_symbol &item : minsyms)
|
||
{
|
||
if (classify_mtype (MSYMBOL_TYPE (item.minsym)) != classification)
|
||
break;
|
||
|
||
info->result.minimal_symbols->push_back (item);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* A helper function to add all symbols matching NAME to INFO. If
|
||
PSPACE is not NULL, the search is restricted to just that program
|
||
space. */
|
||
|
||
static void
|
||
add_matching_symbols_to_info (const char *name,
|
||
symbol_name_match_type name_match_type,
|
||
enum search_domain search_domain,
|
||
struct collect_info *info,
|
||
struct program_space *pspace)
|
||
{
|
||
lookup_name_info lookup_name (name, name_match_type);
|
||
|
||
for (const auto &elt : *info->file_symtabs)
|
||
{
|
||
if (elt == nullptr)
|
||
{
|
||
iterate_over_all_matching_symtabs (info->state, lookup_name,
|
||
VAR_DOMAIN, search_domain,
|
||
pspace, true,
|
||
[&] (block_symbol *bsym)
|
||
{ return info->add_symbol (bsym); });
|
||
search_minsyms_for_name (info, lookup_name, pspace, NULL);
|
||
}
|
||
else if (pspace == NULL || pspace == SYMTAB_PSPACE (elt))
|
||
{
|
||
int prev_len = info->result.symbols->size ();
|
||
|
||
/* Program spaces that are executing startup should have
|
||
been filtered out earlier. */
|
||
gdb_assert (!SYMTAB_PSPACE (elt)->executing_startup);
|
||
set_current_program_space (SYMTAB_PSPACE (elt));
|
||
iterate_over_file_blocks (elt, lookup_name, VAR_DOMAIN,
|
||
[&] (block_symbol *bsym)
|
||
{ return info->add_symbol (bsym); });
|
||
|
||
/* If no new symbols were found in this iteration and this symtab
|
||
is in assembler, we might actually be looking for a label for
|
||
which we don't have debug info. Check for a minimal symbol in
|
||
this case. */
|
||
if (prev_len == info->result.symbols->size ()
|
||
&& elt->language == language_asm)
|
||
search_minsyms_for_name (info, lookup_name, pspace, elt);
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
|
||
/* Now come some functions that are called from multiple places within
|
||
decode_line_1. */
|
||
|
||
static int
|
||
symbol_to_sal (struct symtab_and_line *result,
|
||
int funfirstline, struct symbol *sym)
|
||
{
|
||
if (SYMBOL_CLASS (sym) == LOC_BLOCK)
|
||
{
|
||
*result = find_function_start_sal (sym, funfirstline);
|
||
return 1;
|
||
}
|
||
else
|
||
{
|
||
if (SYMBOL_CLASS (sym) == LOC_LABEL && SYMBOL_VALUE_ADDRESS (sym) != 0)
|
||
{
|
||
*result = {};
|
||
result->symtab = symbol_symtab (sym);
|
||
result->symbol = sym;
|
||
result->line = SYMBOL_LINE (sym);
|
||
result->pc = SYMBOL_VALUE_ADDRESS (sym);
|
||
result->pspace = SYMTAB_PSPACE (result->symtab);
|
||
result->explicit_pc = 1;
|
||
return 1;
|
||
}
|
||
else if (funfirstline)
|
||
{
|
||
/* Nothing. */
|
||
}
|
||
else if (SYMBOL_LINE (sym) != 0)
|
||
{
|
||
/* We know its line number. */
|
||
*result = {};
|
||
result->symtab = symbol_symtab (sym);
|
||
result->symbol = sym;
|
||
result->line = SYMBOL_LINE (sym);
|
||
result->pc = SYMBOL_VALUE_ADDRESS (sym);
|
||
result->pspace = SYMTAB_PSPACE (result->symtab);
|
||
return 1;
|
||
}
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
linespec_result::~linespec_result ()
|
||
{
|
||
for (linespec_sals &lsal : lsals)
|
||
xfree (lsal.canonical);
|
||
}
|
||
|
||
/* Return the quote characters permitted by the linespec parser. */
|
||
|
||
const char *
|
||
get_gdb_linespec_parser_quote_characters (void)
|
||
{
|
||
return linespec_quote_characters;
|
||
}
|