mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-15 04:31:49 +08:00
464 lines
14 KiB
C
464 lines
14 KiB
C
/* Data structures associated with tracepoints in GDB.
|
|
Copyright (C) 1997-2014 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 (TRACEPOINT_H)
|
|
#define TRACEPOINT_H 1
|
|
|
|
#include "breakpoint.h"
|
|
#include "target.h"
|
|
#include "memrange.h"
|
|
#include "gdb_vecs.h"
|
|
|
|
/* An object describing the contents of a traceframe. */
|
|
|
|
struct traceframe_info
|
|
{
|
|
/* Collected memory. */
|
|
VEC(mem_range_s) *memory;
|
|
|
|
/* Collected trace state variables. */
|
|
VEC(int) *tvars;
|
|
};
|
|
|
|
/* A trace state variable is a value managed by a target being
|
|
traced. A trace state variable (or tsv for short) can be accessed
|
|
and assigned to by tracepoint actions and conditionals, but is not
|
|
part of the program being traced, and it doesn't have to be
|
|
collected. Effectively the variables are scratch space for
|
|
tracepoints. */
|
|
|
|
struct trace_state_variable
|
|
{
|
|
/* The variable's name. The user has to prefix with a dollar sign,
|
|
but we don't store that internally. */
|
|
const char *name;
|
|
|
|
/* An id number assigned by GDB, and transmitted to targets. */
|
|
int number;
|
|
|
|
/* The initial value of a variable is a 64-bit signed integer. */
|
|
LONGEST initial_value;
|
|
|
|
/* 1 if the value is known, else 0. The value is known during a
|
|
trace run, or in tfind mode if the variable was collected into
|
|
the current trace frame. */
|
|
int value_known;
|
|
|
|
/* The value of a variable is a 64-bit signed integer. */
|
|
LONGEST value;
|
|
|
|
/* This is true for variables that are predefined and built into
|
|
the target. */
|
|
int builtin;
|
|
};
|
|
|
|
/* The trace status encompasses various info about the general state
|
|
of the tracing run. */
|
|
|
|
enum trace_stop_reason
|
|
{
|
|
trace_stop_reason_unknown,
|
|
trace_never_run,
|
|
tstop_command,
|
|
trace_buffer_full,
|
|
trace_disconnected,
|
|
tracepoint_passcount,
|
|
tracepoint_error
|
|
};
|
|
|
|
struct trace_status
|
|
{
|
|
/* If the status is coming from a file rather than a live target,
|
|
this points at the file's filename. Otherwise, this is NULL. */
|
|
const char *filename;
|
|
|
|
/* This is true if the value of the running field is known. */
|
|
int running_known;
|
|
|
|
/* This is true when the trace experiment is actually running. */
|
|
int running;
|
|
|
|
enum trace_stop_reason stop_reason;
|
|
|
|
/* If stop_reason is tracepoint_passcount or tracepoint_error, this
|
|
is the (on-target) number of the tracepoint which caused the
|
|
stop. */
|
|
int stopping_tracepoint;
|
|
|
|
/* If stop_reason is tstop_command or tracepoint_error, this is an
|
|
arbitrary string that may describe the reason for the stop in
|
|
more detail. */
|
|
|
|
char *stop_desc;
|
|
|
|
/* Number of traceframes currently in the buffer. */
|
|
|
|
int traceframe_count;
|
|
|
|
/* Number of traceframes created since start of run. */
|
|
|
|
int traceframes_created;
|
|
|
|
/* Total size of the target's trace buffer. */
|
|
|
|
int buffer_size;
|
|
|
|
/* Unused bytes left in the target's trace buffer. */
|
|
|
|
int buffer_free;
|
|
|
|
/* 1 if the target will continue tracing after disconnection, else
|
|
0. If the target does not report a value, assume 0. */
|
|
|
|
int disconnected_tracing;
|
|
|
|
/* 1 if the target is using a circular trace buffer, else 0. If the
|
|
target does not report a value, assume 0. */
|
|
|
|
int circular_buffer;
|
|
|
|
/* The "name" of the person running the trace. This is an
|
|
arbitrary string. */
|
|
|
|
char *user_name;
|
|
|
|
/* "Notes" about the trace. This is an arbitrary string not
|
|
interpreted by GDBserver in any special way. */
|
|
|
|
char *notes;
|
|
|
|
/* The calendar times at which the trace run started and stopped,
|
|
both expressed in microseconds of Unix time. */
|
|
|
|
LONGEST start_time;
|
|
LONGEST stop_time;
|
|
};
|
|
|
|
struct trace_status *current_trace_status (void);
|
|
|
|
extern char *default_collect;
|
|
|
|
extern int trace_regblock_size;
|
|
|
|
/* Struct to collect random info about tracepoints on the target. */
|
|
|
|
struct uploaded_tp
|
|
{
|
|
int number;
|
|
enum bptype type;
|
|
ULONGEST addr;
|
|
int enabled;
|
|
int step;
|
|
int pass;
|
|
int orig_size;
|
|
|
|
/* String that is the encoded form of the tracepoint's condition. */
|
|
char *cond;
|
|
|
|
/* Vectors of strings that are the encoded forms of a tracepoint's
|
|
actions. */
|
|
VEC(char_ptr) *actions;
|
|
VEC(char_ptr) *step_actions;
|
|
|
|
/* The original string defining the location of the tracepoint. */
|
|
char *at_string;
|
|
|
|
/* The original string defining the tracepoint's condition. */
|
|
char *cond_string;
|
|
|
|
/* List of original strings defining the tracepoint's actions. */
|
|
VEC(char_ptr) *cmd_strings;
|
|
|
|
/* The tracepoint's current hit count. */
|
|
int hit_count;
|
|
|
|
/* The tracepoint's current traceframe usage. */
|
|
ULONGEST traceframe_usage;
|
|
|
|
struct uploaded_tp *next;
|
|
};
|
|
|
|
/* Struct recording info about trace state variables on the target. */
|
|
|
|
struct uploaded_tsv
|
|
{
|
|
const char *name;
|
|
int number;
|
|
LONGEST initial_value;
|
|
int builtin;
|
|
struct uploaded_tsv *next;
|
|
};
|
|
|
|
/* Struct recording info about a target static tracepoint marker. */
|
|
|
|
struct static_tracepoint_marker
|
|
{
|
|
struct gdbarch *gdbarch;
|
|
CORE_ADDR address;
|
|
|
|
/* The string ID of the marker. */
|
|
char *str_id;
|
|
|
|
/* Extra target reported info associated with the marker. */
|
|
char *extra;
|
|
};
|
|
|
|
struct trace_file_writer;
|
|
|
|
/* Operations to write trace frames to a specific trace format. */
|
|
|
|
struct trace_frame_write_ops
|
|
{
|
|
/* Write a new trace frame. The tracepoint number of this trace
|
|
frame is TPNUM. */
|
|
void (*start) (struct trace_file_writer *self, uint16_t tpnum);
|
|
|
|
/* Write an 'R' block. Buffer BUF contains its contents and SIZE is
|
|
its size. */
|
|
void (*write_r_block) (struct trace_file_writer *self,
|
|
gdb_byte *buf, int32_t size);
|
|
|
|
/* Write an 'M' block, the header and memory contents respectively.
|
|
The header of 'M' block is composed of the start address and the
|
|
length of memory collection, and the memory contents contain
|
|
the collected memory contents in tracing.
|
|
For extremely large M block, GDB is unable to get its contents
|
|
and write them into trace file in one go, due to the limitation
|
|
of the remote target or the size of internal buffer, we split
|
|
the operation to 'M' block to two operations. */
|
|
/* Write the head of 'M' block. ADDR is the start address of
|
|
collected memory and LENGTH is the length of memory contents. */
|
|
void (*write_m_block_header) (struct trace_file_writer *self,
|
|
uint64_t addr, uint16_t length);
|
|
/* Write the memory contents of 'M' block. Buffer BUF contains
|
|
its contents and LENGTH is its length. This method can be called
|
|
multiple times to write large memory contents of a single 'M'
|
|
block. */
|
|
void (*write_m_block_memory) (struct trace_file_writer *self,
|
|
gdb_byte *buf, uint16_t length);
|
|
|
|
/* Write a 'V' block. NUM is the trace variable number and VAL is
|
|
the value of the trace variable. */
|
|
void (*write_v_block) (struct trace_file_writer *self, int32_t num,
|
|
uint64_t val);
|
|
|
|
/* The end of the trace frame. */
|
|
void (*end) (struct trace_file_writer *self);
|
|
};
|
|
|
|
/* Operations to write trace buffers to a specific trace format. */
|
|
|
|
struct trace_file_write_ops
|
|
{
|
|
/* Destructor. Releases everything from SELF (but not SELF
|
|
itself). */
|
|
void (*dtor) (struct trace_file_writer *self);
|
|
|
|
/* Save the data to file or directory NAME of desired format in
|
|
target side. Return true for success, otherwise return
|
|
false. */
|
|
int (*target_save) (struct trace_file_writer *self,
|
|
const char *name);
|
|
|
|
/* Write the trace buffers to file or directory NAME. */
|
|
void (*start) (struct trace_file_writer *self,
|
|
const char *name);
|
|
|
|
/* Write the trace header. */
|
|
void (*write_header) (struct trace_file_writer *self);
|
|
|
|
/* Write the type of block about registers. SIZE is the size of
|
|
all registers on the target. */
|
|
void (*write_regblock_type) (struct trace_file_writer *self,
|
|
int size);
|
|
|
|
/* Write trace status TS. */
|
|
void (*write_status) (struct trace_file_writer *self,
|
|
struct trace_status *ts);
|
|
|
|
/* Write the uploaded TSV. */
|
|
void (*write_uploaded_tsv) (struct trace_file_writer *self,
|
|
struct uploaded_tsv *tsv);
|
|
|
|
/* Write the uploaded tracepoint TP. */
|
|
void (*write_uploaded_tp) (struct trace_file_writer *self,
|
|
struct uploaded_tp *tp);
|
|
|
|
/* Write to mark the end of the definition part. */
|
|
void (*write_definition_end) (struct trace_file_writer *self);
|
|
|
|
/* Write the data of trace buffer without parsing. The content is
|
|
in BUF and length is LEN. */
|
|
void (*write_trace_buffer) (struct trace_file_writer *self,
|
|
gdb_byte *buf, LONGEST len);
|
|
|
|
/* Operations to write trace frames. The user of this field is
|
|
responsible to parse the data of trace buffer. Either field
|
|
'write_trace_buffer' or field ' frame_ops' is NULL. */
|
|
const struct trace_frame_write_ops *frame_ops;
|
|
|
|
/* The end of writing trace buffers. */
|
|
void (*end) (struct trace_file_writer *self);
|
|
};
|
|
|
|
/* Trace file writer for a given format. */
|
|
|
|
struct trace_file_writer
|
|
{
|
|
const struct trace_file_write_ops *ops;
|
|
};
|
|
|
|
struct memrange
|
|
{
|
|
/* memrange_absolute for absolute memory range, else basereg
|
|
number. */
|
|
int type;
|
|
bfd_signed_vma start;
|
|
bfd_signed_vma end;
|
|
};
|
|
|
|
struct collection_list
|
|
{
|
|
/* room for up to 256 regs */
|
|
unsigned char regs_mask[32];
|
|
long listsize;
|
|
long next_memrange;
|
|
struct memrange *list;
|
|
|
|
/* size of array pointed to by expr_list elt. */
|
|
long aexpr_listsize;
|
|
long next_aexpr_elt;
|
|
struct agent_expr **aexpr_list;
|
|
|
|
/* True is the user requested a collection of "$_sdata", "static
|
|
tracepoint data". */
|
|
int strace_data;
|
|
|
|
/* A set of names of wholly collected objects. */
|
|
VEC(char_ptr) *wholly_collected;
|
|
/* A set of computed expressions. */
|
|
VEC(char_ptr) *computed;
|
|
};
|
|
|
|
extern void parse_static_tracepoint_marker_definition
|
|
(char *line, char **pp,
|
|
struct static_tracepoint_marker *marker);
|
|
extern void release_static_tracepoint_marker (struct static_tracepoint_marker *);
|
|
extern void free_current_marker (void *arg);
|
|
|
|
/* A hook used to notify the UI of tracepoint operations. */
|
|
|
|
extern void (*deprecated_trace_find_hook) (char *arg, int from_tty);
|
|
extern void (*deprecated_trace_start_stop_hook) (int start, int from_tty);
|
|
|
|
/* Returns the current traceframe number. */
|
|
extern int get_traceframe_number (void);
|
|
|
|
/* Returns the tracepoint number for current traceframe. */
|
|
extern int get_tracepoint_number (void);
|
|
|
|
/* Make the traceframe NUM be the current GDB trace frame number, and
|
|
do nothing more. In particular, this does not flush the
|
|
register/frame caches or notify the target about the trace frame
|
|
change, so that is can be used when we need to momentarily access
|
|
live memory. Targets lazily switch their current traceframe to
|
|
match GDB's traceframe number, at the appropriate times. */
|
|
extern void set_traceframe_number (int);
|
|
|
|
/* Make the traceframe NUM be the current trace frame, all the way to
|
|
the target, and flushes all global state (register/frame caches,
|
|
etc.). */
|
|
extern void set_current_traceframe (int num);
|
|
|
|
struct cleanup *make_cleanup_restore_current_traceframe (void);
|
|
struct cleanup *make_cleanup_restore_traceframe_number (void);
|
|
|
|
void free_actions (struct breakpoint *);
|
|
|
|
extern const char *decode_agent_options (const char *exp, int *trace_string);
|
|
|
|
extern struct cleanup *
|
|
encode_actions_and_make_cleanup (struct bp_location *tloc,
|
|
struct collection_list *tracepoint_list,
|
|
struct collection_list *stepping_list);
|
|
|
|
extern void encode_actions_rsp (struct bp_location *tloc,
|
|
char ***tdp_actions, char ***stepping_actions);
|
|
|
|
extern void validate_actionline (const char *, struct breakpoint *);
|
|
extern void validate_trace_state_variable_name (const char *name);
|
|
|
|
extern struct trace_state_variable *find_trace_state_variable (const char *name);
|
|
extern struct trace_state_variable *
|
|
find_trace_state_variable_by_number (int number);
|
|
|
|
extern struct trace_state_variable *create_trace_state_variable (const char *name);
|
|
|
|
extern int encode_source_string (int num, ULONGEST addr,
|
|
char *srctype, char *src,
|
|
char *buf, int buf_size);
|
|
|
|
extern void parse_trace_status (char *line, struct trace_status *ts);
|
|
|
|
extern void parse_tracepoint_status (char *p, struct breakpoint *tp,
|
|
struct uploaded_tp *utp);
|
|
|
|
extern void parse_tracepoint_definition (char *line,
|
|
struct uploaded_tp **utpp);
|
|
extern void parse_tsv_definition (char *line, struct uploaded_tsv **utsvp);
|
|
|
|
extern struct uploaded_tp *get_uploaded_tp (int num, ULONGEST addr,
|
|
struct uploaded_tp **utpp);
|
|
extern struct uploaded_tsv *get_uploaded_tsv (int num,
|
|
struct uploaded_tsv **utsvp);
|
|
extern struct tracepoint *create_tracepoint_from_upload (struct uploaded_tp *utp);
|
|
extern void merge_uploaded_tracepoints (struct uploaded_tp **utpp);
|
|
extern void merge_uploaded_trace_state_variables (struct uploaded_tsv **utsvp);
|
|
|
|
extern void query_if_trace_running (int from_tty);
|
|
extern void disconnect_tracing (void);
|
|
extern void trace_reset_local_state (void);
|
|
|
|
extern void start_tracing (char *notes);
|
|
extern void stop_tracing (char *notes);
|
|
|
|
extern void trace_status_mi (int on_stop);
|
|
|
|
extern void tvariables_info_1 (void);
|
|
extern void save_trace_state_variables (struct ui_file *fp);
|
|
|
|
extern void tfind_1 (enum trace_find_type type, int num,
|
|
CORE_ADDR addr1, CORE_ADDR addr2,
|
|
int from_tty);
|
|
|
|
extern void trace_save_tfile (const char *filename,
|
|
int target_does_save);
|
|
extern void trace_save_ctf (const char *dirname,
|
|
int target_does_save);
|
|
|
|
extern struct traceframe_info *parse_traceframe_info (const char *tframe_info);
|
|
|
|
extern int traceframe_available_memory (VEC(mem_range_s) **result,
|
|
CORE_ADDR memaddr, ULONGEST len);
|
|
|
|
extern struct traceframe_info *get_traceframe_info (void);
|
|
|
|
extern struct bp_location *get_traceframe_location (int *stepping_frame_p);
|
|
|
|
#endif /* TRACEPOINT_H */
|