mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-27 04:52:05 +08:00
61baf725ec
This applies the second part of GDB's End of Year Procedure, which
updates the copyright year range in all of GDB's files.
gdb/ChangeLog:
Update copyright year range in all GDB files.
305 lines
11 KiB
C
305 lines
11 KiB
C
/* Generic SDT probe support for GDB.
|
|
|
|
Copyright (C) 2012-2017 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/>. */
|
|
|
|
#if !defined (PROBE_H)
|
|
#define PROBE_H 1
|
|
|
|
struct event_location;
|
|
|
|
#include "gdb_vecs.h"
|
|
|
|
/* Definition of a vector of probes. */
|
|
|
|
typedef struct probe *probe_p;
|
|
DEF_VEC_P (probe_p);
|
|
|
|
struct linespec_result;
|
|
|
|
/* Structure useful for passing the header names in the method
|
|
`gen_ui_out_table_header'. */
|
|
|
|
struct info_probe_column
|
|
{
|
|
/* The internal name of the field. This string cannot be capitalized nor
|
|
localized, e.g., "extra_field". */
|
|
|
|
const char *field_name;
|
|
|
|
/* The field name to be printed in the `info probes' command. This
|
|
string can be capitalized and localized, e.g., _("Extra Field"). */
|
|
const char *print_name;
|
|
};
|
|
|
|
typedef struct info_probe_column info_probe_column_s;
|
|
DEF_VEC_O (info_probe_column_s);
|
|
|
|
/* Operations associated with a probe. */
|
|
|
|
struct probe_ops
|
|
{
|
|
/* Method responsible for verifying if LINESPECP is a valid linespec for
|
|
a probe breakpoint. It should return 1 if it is, or zero if it is not.
|
|
It also should update LINESPECP in order to discard the breakpoint
|
|
option associated with this linespec. For example, if the option is
|
|
`-probe', and the LINESPECP is `-probe abc', the function should
|
|
return 1 and set LINESPECP to `abc'. */
|
|
|
|
int (*is_linespec) (const char **linespecp);
|
|
|
|
/* Function that should fill PROBES with known probes from OBJFILE. */
|
|
|
|
void (*get_probes) (VEC (probe_p) **probes, struct objfile *objfile);
|
|
|
|
/* Compute the probe's relocated address. OBJFILE is the objfile
|
|
in which the probe originated. */
|
|
|
|
CORE_ADDR (*get_probe_address) (struct probe *probe,
|
|
struct objfile *objfile);
|
|
|
|
/* Return the number of arguments of PROBE. This function can
|
|
throw an exception. */
|
|
|
|
unsigned (*get_probe_argument_count) (struct probe *probe,
|
|
struct frame_info *frame);
|
|
|
|
/* Return 1 if the probe interface can evaluate the arguments of probe
|
|
PROBE, zero otherwise. See the comments on
|
|
sym_probe_fns:can_evaluate_probe_arguments for more details. */
|
|
|
|
int (*can_evaluate_probe_arguments) (struct probe *probe);
|
|
|
|
/* Evaluate the Nth argument from the PROBE, returning a value
|
|
corresponding to it. The argument number is represented N.
|
|
This function can throw an exception. */
|
|
|
|
struct value *(*evaluate_probe_argument) (struct probe *probe,
|
|
unsigned n,
|
|
struct frame_info *frame);
|
|
|
|
/* Compile the Nth argument of the PROBE to an agent expression.
|
|
The argument number is represented by N. */
|
|
|
|
void (*compile_to_ax) (struct probe *probe, struct agent_expr *aexpr,
|
|
struct axs_value *axs_value, unsigned n);
|
|
|
|
/* Set the semaphore associated with the PROBE. This function only makes
|
|
sense if the probe has a concept of semaphore associated to a
|
|
probe, otherwise it can be set to NULL. */
|
|
|
|
void (*set_semaphore) (struct probe *probe, struct objfile *objfile,
|
|
struct gdbarch *gdbarch);
|
|
|
|
/* Clear the semaphore associated with the PROBE. This function only
|
|
makes sense if the probe has a concept of semaphore associated to
|
|
a probe, otherwise it can be set to NULL. */
|
|
|
|
void (*clear_semaphore) (struct probe *probe, struct objfile *objfile,
|
|
struct gdbarch *gdbarch);
|
|
|
|
/* Function called to destroy PROBE's specific data. This function
|
|
shall not free PROBE itself. */
|
|
|
|
void (*destroy) (struct probe *probe);
|
|
|
|
/* Return a pointer to a name identifying the probe type. This is
|
|
the string that will be displayed in the "Type" column of the
|
|
`info probes' command. */
|
|
|
|
const char *(*type_name) (struct probe *probe);
|
|
|
|
/* Function responsible for providing the extra fields that will be
|
|
printed in the `info probes' command. It should fill HEADS
|
|
with whatever extra fields it needs. If the backend doesn't need
|
|
to print extra fields, it can set this method to NULL. */
|
|
|
|
void (*gen_info_probes_table_header) (VEC (info_probe_column_s) **heads);
|
|
|
|
/* Function that will fill VALUES with the values of the extra fields
|
|
to be printed for PROBE. If the backend implements the
|
|
`gen_ui_out_table_header' method, then it should implement
|
|
this method as well. The backend should also guarantee that the
|
|
order and the number of values in the vector is exactly the same
|
|
as the order of the extra fields provided in the method
|
|
`gen_ui_out_table_header'. If a certain field is to be skipped
|
|
when printing the information, you can push a NULL value in that
|
|
position in the vector. */
|
|
|
|
void (*gen_info_probes_table_values) (struct probe *probe,
|
|
VEC (const_char_ptr) **values);
|
|
|
|
/* Enable a probe. The semantics of "enabling" a probe depend on
|
|
the specific backend and the field can be NULL in case enabling
|
|
probes is not supported. This function can throw an
|
|
exception. */
|
|
|
|
void (*enable_probe) (struct probe *probe);
|
|
|
|
/* Disable a probe. The semantics of "disabling" a probe depend
|
|
on the specific backend and the field can be NULL in case
|
|
disabling probes is not supported. This function can throw an
|
|
exception. */
|
|
|
|
void (*disable_probe) (struct probe *probe);
|
|
};
|
|
|
|
/* Definition of a vector of probe_ops. */
|
|
|
|
typedef const struct probe_ops *probe_ops_cp;
|
|
DEF_VEC_P (probe_ops_cp);
|
|
extern VEC (probe_ops_cp) *all_probe_ops;
|
|
|
|
/* The probe_ops associated with the generic probe. */
|
|
|
|
extern const struct probe_ops probe_ops_any;
|
|
|
|
/* Helper function that, given KEYWORDS, iterate over it trying to match
|
|
each keyword with LINESPECP. If it succeeds, it updates the LINESPECP
|
|
pointer and returns 1. Otherwise, nothing is done to LINESPECP and zero
|
|
is returned. */
|
|
|
|
extern int probe_is_linespec_by_keyword (const char **linespecp,
|
|
const char *const *keywords);
|
|
|
|
/* Return specific PROBE_OPS * matching *LINESPECP and possibly updating
|
|
*LINESPECP to skip its "-probe-type " prefix. Return &probe_ops_any if
|
|
*LINESPECP matches "-probe ", that is any unspecific probe. Return NULL if
|
|
*LINESPECP is not identified as any known probe type, *LINESPECP is not
|
|
modified in such case. */
|
|
|
|
extern const struct probe_ops *probe_linespec_to_ops (const char **linespecp);
|
|
|
|
/* The probe itself. The struct contains generic information about the
|
|
probe, and then some specific information which should be stored in
|
|
the `probe_info' field. */
|
|
|
|
struct probe
|
|
{
|
|
/* The operations associated with this probe. */
|
|
const struct probe_ops *pops;
|
|
|
|
/* The probe's architecture. */
|
|
struct gdbarch *arch;
|
|
|
|
/* The name of the probe. */
|
|
const char *name;
|
|
|
|
/* The provider of the probe. It generally defaults to the name of
|
|
the objfile which contains the probe. */
|
|
const char *provider;
|
|
|
|
/* The address where the probe is inserted, relative to
|
|
SECT_OFF_TEXT. */
|
|
CORE_ADDR address;
|
|
};
|
|
|
|
/* A bound probe holds a pointer to a probe and a pointer to the
|
|
probe's defining objfile. This is needed because probes are
|
|
independent of the program space and thus require relocation at
|
|
their point of use. */
|
|
|
|
struct bound_probe
|
|
{
|
|
/* The probe. */
|
|
|
|
struct probe *probe;
|
|
|
|
/* The objfile in which the probe originated. */
|
|
|
|
struct objfile *objfile;
|
|
};
|
|
|
|
/* A helper for linespec that decodes a probe specification. It returns a
|
|
symtabs_and_lines object and updates LOC or throws an error. */
|
|
|
|
extern struct symtabs_and_lines parse_probes (const struct event_location *loc,
|
|
struct program_space *pspace,
|
|
struct linespec_result *canon);
|
|
|
|
/* Helper function to register the proper probe_ops to a newly created probe.
|
|
This function is mainly called from `sym_get_probes'. */
|
|
|
|
extern void register_probe_ops (struct probe *probe);
|
|
|
|
/* Given a PC, find an associated probe. If a probe is found, return
|
|
it. If no probe is found, return a bound probe whose fields are
|
|
both NULL. */
|
|
|
|
extern struct bound_probe find_probe_by_pc (CORE_ADDR pc);
|
|
|
|
/* Search OBJFILE for a probe with the given PROVIDER, NAME. Return a
|
|
VEC of all probes that were found. If no matching probe is found,
|
|
return NULL. The caller must free the VEC. */
|
|
|
|
extern VEC (probe_p) *find_probes_in_objfile (struct objfile *objfile,
|
|
const char *provider,
|
|
const char *name);
|
|
|
|
/* Generate a `info probes' command output for probe_ops represented by
|
|
POPS. If POPS is NULL it considers any probes types. It is a helper
|
|
function that can be used by the probe backends to print their
|
|
`info probe TYPE'. */
|
|
|
|
extern void info_probes_for_ops (const char *arg, int from_tty,
|
|
const struct probe_ops *pops);
|
|
|
|
/* Return the `cmd_list_element' associated with the `info probes' command,
|
|
or create a new one if it doesn't exist. Helper function that serves the
|
|
purpose of avoiding the case of a backend using the `cmd_list_element'
|
|
associated with `info probes', without having it registered yet. */
|
|
|
|
extern struct cmd_list_element **info_probes_cmdlist_get (void);
|
|
|
|
/* Compute the probe's relocated address. OBJFILE is the objfile in
|
|
which the probe originated. */
|
|
|
|
extern CORE_ADDR get_probe_address (struct probe *probe,
|
|
struct objfile *objfile);
|
|
|
|
/* Return the argument count of the specified probe.
|
|
|
|
This function can throw an exception. */
|
|
|
|
extern unsigned get_probe_argument_count (struct probe *probe,
|
|
struct frame_info *frame);
|
|
|
|
/* Return 1 if the probe interface associated with PROBE can evaluate
|
|
arguments, zero otherwise. See the comments on the definition of
|
|
sym_probe_fns:can_evaluate_probe_arguments for more details. */
|
|
|
|
extern int can_evaluate_probe_arguments (struct probe *probe);
|
|
|
|
/* Evaluate argument N of the specified probe. N must be between 0
|
|
inclusive and get_probe_argument_count exclusive.
|
|
|
|
This function can throw an exception. */
|
|
|
|
extern struct value *evaluate_probe_argument (struct probe *probe,
|
|
unsigned n,
|
|
struct frame_info *frame);
|
|
|
|
/* A convenience function that finds a probe at the PC in FRAME and
|
|
evaluates argument N, with 0 <= N < number_of_args. If there is no
|
|
probe at that location, or if the probe does not have enough arguments,
|
|
this returns NULL. */
|
|
|
|
extern struct value *probe_safe_evaluate_at_pc (struct frame_info *frame,
|
|
unsigned n);
|
|
|
|
#endif /* !defined (PROBE_H) */
|