mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-27 12:03:41 +08:00
292 lines
9.2 KiB
C++
292 lines
9.2 KiB
C++
/* Data structures and API for event locations in GDB.
|
|
Copyright (C) 2013-2020 Free Software Foundation, Inc.
|
|
|
|
This file is part of GDB.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef LOCATION_H
|
|
#define LOCATION_H
|
|
|
|
#include "symtab.h"
|
|
|
|
struct language_defn;
|
|
struct event_location;
|
|
|
|
/* An enumeration of possible signs for a line offset. */
|
|
|
|
enum offset_relative_sign
|
|
{
|
|
/* No sign */
|
|
LINE_OFFSET_NONE,
|
|
|
|
/* A plus sign ("+") */
|
|
LINE_OFFSET_PLUS,
|
|
|
|
/* A minus sign ("-") */
|
|
LINE_OFFSET_MINUS,
|
|
|
|
/* A special "sign" for unspecified offset. */
|
|
LINE_OFFSET_UNKNOWN
|
|
};
|
|
|
|
/* A line offset in a location. */
|
|
|
|
struct line_offset
|
|
{
|
|
/* Line offset and any specified sign. */
|
|
int offset;
|
|
enum offset_relative_sign sign;
|
|
};
|
|
|
|
/* An enumeration of the various ways to specify a stop event
|
|
location (used with create_breakpoint). */
|
|
|
|
enum event_location_type
|
|
{
|
|
/* A traditional linespec. */
|
|
LINESPEC_LOCATION,
|
|
|
|
/* An address in the inferior. */
|
|
ADDRESS_LOCATION,
|
|
|
|
/* An explicit location. */
|
|
EXPLICIT_LOCATION,
|
|
|
|
/* A probe location. */
|
|
PROBE_LOCATION
|
|
};
|
|
|
|
/* A traditional linespec. */
|
|
|
|
struct linespec_location
|
|
{
|
|
/* Whether the function name is fully-qualified or not. */
|
|
symbol_name_match_type match_type;
|
|
|
|
/* The linespec. */
|
|
char *spec_string;
|
|
};
|
|
|
|
/* An explicit location. This structure is used to bypass the
|
|
parsing done on linespecs. It still has the same requirements
|
|
as linespecs, though. For example, source_filename requires
|
|
at least one other field. */
|
|
|
|
struct explicit_location
|
|
{
|
|
/* The source filename. Malloc'd. */
|
|
char *source_filename;
|
|
|
|
/* The function name. Malloc'd. */
|
|
char *function_name;
|
|
|
|
/* Whether the function name is fully-qualified or not. */
|
|
symbol_name_match_type func_name_match_type;
|
|
|
|
/* The name of a label. Malloc'd. */
|
|
char *label_name;
|
|
|
|
/* A line offset relative to the start of the symbol
|
|
identified by the above fields or the current symtab
|
|
if the other fields are NULL. */
|
|
struct line_offset line_offset;
|
|
};
|
|
|
|
/* Return the type of the given event location. */
|
|
|
|
extern enum event_location_type
|
|
event_location_type (const struct event_location *);
|
|
|
|
/* Return a malloc'd explicit string representation of the given
|
|
explicit location. The location must already be canonicalized/valid. */
|
|
|
|
extern char *
|
|
explicit_location_to_string (const struct explicit_location *explicit_loc);
|
|
|
|
/* Return a malloc'd linespec string representation of the given
|
|
explicit location. The location must already be canonicalized/valid. */
|
|
|
|
extern char *
|
|
explicit_location_to_linespec (const struct explicit_location *explicit_loc);
|
|
|
|
/* Return a string representation of the LOCATION.
|
|
This function may return NULL for unspecified linespecs,
|
|
e.g, LINESPEC_LOCATION and spec_string is NULL.
|
|
|
|
The result is cached in LOCATION. */
|
|
|
|
extern const char *
|
|
event_location_to_string (struct event_location *location);
|
|
|
|
/* A deleter for a struct event_location. */
|
|
|
|
struct event_location_deleter
|
|
{
|
|
void operator() (event_location *location) const;
|
|
};
|
|
|
|
/* A unique pointer for event_location. */
|
|
typedef std::unique_ptr<event_location, event_location_deleter>
|
|
event_location_up;
|
|
|
|
/* Create a new linespec location. */
|
|
|
|
extern event_location_up new_linespec_location
|
|
(const char **linespec, symbol_name_match_type match_type);
|
|
|
|
/* Return the linespec location of the given event_location (which
|
|
must be of type LINESPEC_LOCATION). */
|
|
|
|
extern const linespec_location *
|
|
get_linespec_location (const struct event_location *location);
|
|
|
|
/* Create a new address location.
|
|
ADDR is the address corresponding to this event_location.
|
|
ADDR_STRING, a string of ADDR_STRING_LEN characters, is
|
|
the expression that was parsed to determine the address ADDR. */
|
|
|
|
extern event_location_up new_address_location (CORE_ADDR addr,
|
|
const char *addr_string,
|
|
int addr_string_len);
|
|
|
|
/* Return the address location (a CORE_ADDR) of the given event_location
|
|
(which must be of type ADDRESS_LOCATION). */
|
|
|
|
extern CORE_ADDR
|
|
get_address_location (const struct event_location *location);
|
|
|
|
/* Return the expression (a string) that was used to compute the address
|
|
of the given event_location (which must be of type ADDRESS_LOCATION). */
|
|
|
|
extern const char *
|
|
get_address_string_location (const struct event_location *location);
|
|
|
|
/* Create a new probe location. */
|
|
|
|
extern event_location_up new_probe_location (const char *probe);
|
|
|
|
/* Return the probe location (a string) of the given event_location
|
|
(which must be of type PROBE_LOCATION). */
|
|
|
|
extern const char *
|
|
get_probe_location (const struct event_location *location);
|
|
|
|
/* Initialize the given explicit location. */
|
|
|
|
extern void
|
|
initialize_explicit_location (struct explicit_location *explicit_loc);
|
|
|
|
/* Create a new explicit location. If not NULL, EXPLICIT is checked for
|
|
validity. If invalid, an exception is thrown. */
|
|
|
|
extern event_location_up
|
|
new_explicit_location (const struct explicit_location *explicit_loc);
|
|
|
|
/* Return the explicit location of the given event_location
|
|
(which must be of type EXPLICIT_LOCATION). */
|
|
|
|
extern struct explicit_location *
|
|
get_explicit_location (struct event_location *location);
|
|
|
|
/* A const version of the above. */
|
|
|
|
extern const struct explicit_location *
|
|
get_explicit_location_const (const struct event_location *location);
|
|
|
|
/* Return a copy of the given SRC location. */
|
|
|
|
extern event_location_up
|
|
copy_event_location (const struct event_location *src);
|
|
|
|
/* Attempt to convert the input string in *ARGP into an event_location.
|
|
ARGP is advanced past any processed input. Returns an event_location
|
|
(malloc'd) if an event location was successfully found in *ARGP,
|
|
NULL otherwise.
|
|
|
|
This function may call error() if *ARGP looks like properly formed,
|
|
but invalid, input, e.g., if it is called with missing argument parameters
|
|
or invalid options.
|
|
|
|
This function is intended to be used by CLI commands and will parse
|
|
explicit locations in a CLI-centric way. Other interfaces should use
|
|
string_to_event_location_basic if they want to maintain support for
|
|
legacy specifications of probe, address, and linespec locations.
|
|
|
|
MATCH_TYPE should be either WILD or FULL. If -q/--qualified is specified
|
|
in the input string, it will take precedence over this parameter. */
|
|
|
|
extern event_location_up string_to_event_location
|
|
(const char **argp, const struct language_defn *language,
|
|
symbol_name_match_type match_type = symbol_name_match_type::WILD);
|
|
|
|
/* Like string_to_event_location, but does not attempt to parse
|
|
explicit locations. MATCH_TYPE indicates how function names should
|
|
be matched. */
|
|
|
|
extern event_location_up
|
|
string_to_event_location_basic (const char **argp,
|
|
const struct language_defn *language,
|
|
symbol_name_match_type match_type);
|
|
|
|
/* Structure filled in by string_to_explicit_location to aid the
|
|
completer. */
|
|
struct explicit_completion_info
|
|
{
|
|
/* Pointer to the last option found. E.g., in "b -sou src.c -fun
|
|
func", LAST_OPTION is left pointing at "-fun func". */
|
|
const char *last_option = NULL;
|
|
|
|
/* These point to the start and end of a quoted argument, iff the
|
|
last argument was quoted. If parsing finds an incomplete quoted
|
|
string (e.g., "break -function 'fun"), then QUOTED_ARG_START is
|
|
set to point to the opening \', and QUOTED_ARG_END is left NULL.
|
|
If the last option is not quoted, then both are set to NULL. */
|
|
const char *quoted_arg_start = NULL;
|
|
const char *quoted_arg_end = NULL;
|
|
|
|
/* True if we saw an explicit location option, as opposed to only
|
|
flags that affect both explicit locations and linespecs, like
|
|
"-qualified". */
|
|
bool saw_explicit_location_option = false;
|
|
};
|
|
|
|
/* Attempt to convert the input string in *ARGP into an explicit location.
|
|
ARGP is advanced past any processed input. Returns an event_location
|
|
(malloc'd) if an explicit location was successfully found in *ARGP,
|
|
NULL otherwise.
|
|
|
|
If COMPLETION_INFO is NULL, this function may call error() if *ARGP
|
|
looks like improperly formed input, e.g., if it is called with
|
|
missing argument parameters or invalid options. If COMPLETION_INFO
|
|
is not NULL, this function will not throw any exceptions. */
|
|
|
|
extern event_location_up
|
|
string_to_explicit_location (const char **argp,
|
|
const struct language_defn *language,
|
|
explicit_completion_info *completion_info);
|
|
|
|
/* A convenience function for testing for unset locations. */
|
|
|
|
extern int event_location_empty_p (const struct event_location *location);
|
|
|
|
/* Set the location's string representation. If STRING is NULL, clear
|
|
the string representation. */
|
|
|
|
extern void
|
|
set_event_location_string (struct event_location *location,
|
|
const char *string);
|
|
|
|
#endif /* LOCATION_H */
|