X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Ftracepoint.h;h=56a1f92d9d0cfe0848ea53a6aa0cd5dcd8be72f7;hb=c3699833af0343d13d7d39b3c589d3ac5b930137;hp=276501e51742fba442f9ccafef117bd4fa1496f2;hpb=b3b9301ef4f284b2f2f3dd276cf63600507fe47a;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/tracepoint.h b/gdb/tracepoint.h index 276501e517..56a1f92d9d 100644 --- a/gdb/tracepoint.h +++ b/gdb/tracepoint.h @@ -1,6 +1,5 @@ /* Data structures associated with tracepoints in GDB. - Copyright (C) 1997, 1998, 1999, 2000, 2007, 2008, 2009, 2010, 2011 - Free Software Foundation, Inc. + Copyright (C) 1997-2020 Free Software Foundation, Inc. This file is part of GDB. @@ -21,7 +20,24 @@ #define TRACEPOINT_H 1 #include "breakpoint.h" -#include "target.h" +#include "memrange.h" +#include "gdbsupport/gdb_vecs.h" + +#include +#include + +/* An object describing the contents of a traceframe. */ + +struct traceframe_info +{ + /* Collected memory. */ + std::vector memory; + + /* Collected trace state variables. */ + std::vector tvars; +}; + +typedef std::unique_ptr traceframe_info_up; /* A trace state variable is a value managed by a target being traced. A trace state variable (or tsv for short) can be accessed @@ -31,29 +47,33 @@ 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; +{ + trace_state_variable (std::string &&name_, int number_) + : name (name_), number (number_) + {} - /* An id number assigned by GDB, and transmitted to targets. */ - int number; + /* The variable's name. The user has to prefix with a dollar sign, + but we don't store that internally. */ + std::string name; - /* The initial value of a variable is a 64-bit signed integer. */ - LONGEST initial_value; + /* An id number assigned by GDB, and transmitted to targets. */ + int number = 0; - /* 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 initial value of a variable is a 64-bit signed integer. */ + LONGEST initial_value = 0; - /* The value of a variable is a 64-bit signed integer. */ - LONGEST 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 = 0; - /* This is true for variables that are predefined and built into - the target. */ - int builtin; - }; + /* The value of a variable is a 64-bit signed integer. */ + LONGEST value = 0; + + /* This is true for variables that are predefined and built into + the target. */ + int builtin = 0; + }; /* The trace status encompasses various info about the general state of the tracing run. */ @@ -62,7 +82,7 @@ enum trace_stop_reason { trace_stop_reason_unknown, trace_never_run, - tstop_command, + trace_stop_command, trace_buffer_full, trace_disconnected, tracepoint_passcount, @@ -71,13 +91,14 @@ enum trace_stop_reason struct trace_status { - /* This is true if the status is coming from a file rather - than a live target. */ - int from_file; + /* 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; @@ -87,9 +108,11 @@ struct trace_status stop. */ int stopping_tracepoint; - /* If stop_reason is tracepoint_error, this is a human-readable - string that describes the error that happened on the target. */ - char *error_desc; + /* 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. */ @@ -116,44 +139,68 @@ struct trace_status 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; -/* Struct to collect random info about tracepoints on the target. */ +extern int trace_regblock_size; -DEF_VEC_P (char_ptr); +extern const char *stop_reason_names[]; + +/* 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; + int number = 0; + enum bptype type = bp_none; + ULONGEST addr = 0; + int enabled = 0; + int step = 0; + int pass = 0; + int orig_size = 0; /* String that is the encoded form of the tracepoint's condition. */ - char *cond; + gdb::unique_xmalloc_ptr cond; /* Vectors of strings that are the encoded forms of a tracepoint's actions. */ - VEC(char_ptr) *actions; - VEC(char_ptr) *step_actions; + std::vector> actions; + std::vector> step_actions; /* The original string defining the location of the tracepoint. */ - char *at_string; + gdb::unique_xmalloc_ptr at_string; /* The original string defining the tracepoint's condition. */ - char *cond_string; + gdb::unique_xmalloc_ptr cond_string; /* List of original strings defining the tracepoint's actions. */ - VEC(char_ptr) *cmd_strings; + std::vector> cmd_strings; + + /* The tracepoint's current hit count. */ + int hit_count = 0; + + /* The tracepoint's current traceframe usage. */ + ULONGEST traceframe_usage = 0; - struct uploaded_tp *next; + struct uploaded_tp *next = nullptr; }; /* Struct recording info about trace state variables on the target. */ @@ -171,71 +218,225 @@ struct uploaded_tsv struct static_tracepoint_marker { - struct gdbarch *gdbarch; - CORE_ADDR address; + DISABLE_COPY_AND_ASSIGN (static_tracepoint_marker); + + static_tracepoint_marker () = default; + static_tracepoint_marker (static_tracepoint_marker &&) = default; + static_tracepoint_marker &operator= (static_tracepoint_marker &&) = default; + + struct gdbarch *gdbarch = NULL; + CORE_ADDR address = 0; /* The string ID of the marker. */ - char *str_id; + std::string str_id; /* Extra target reported info associated with the marker. */ - char *extra; + std::string extra; +}; + +struct memrange +{ + memrange (int type_, bfd_signed_vma start_, bfd_signed_vma end_) + : type (type_), start (start_), end (end_) + {} + + memrange () + {} + + /* memrange_absolute for absolute memory range, else basereg + number. */ + int type; + bfd_signed_vma start; + bfd_signed_vma end; +}; + +class collection_list +{ +public: + collection_list (); + + void add_wholly_collected (const char *print_name); + + void append_exp (struct expression *exp); + + /* Add AEXPR to the list, taking ownership. */ + void add_aexpr (agent_expr_up aexpr); + + void add_remote_register (unsigned int regno); + void add_ax_registers (struct agent_expr *aexpr); + void add_local_register (struct gdbarch *gdbarch, + unsigned int regno, + CORE_ADDR scope); + void add_memrange (struct gdbarch *gdbarch, + int type, bfd_signed_vma base, + unsigned long len, CORE_ADDR scope); + void collect_symbol (struct symbol *sym, + struct gdbarch *gdbarch, + long frame_regno, long frame_offset, + CORE_ADDR scope, + int trace_string); + + void add_local_symbols (struct gdbarch *gdbarch, CORE_ADDR pc, + long frame_regno, long frame_offset, int type, + int trace_string); + void add_static_trace_data (); + + void finish (); + + std::vector stringify (); + + const std::vector &wholly_collected () + { return m_wholly_collected; } + + const std::vector &computed () + { return m_computed; } + +private: + /* We need the allocator zero-initialize the mask, so we don't use + gdb::byte_vector. */ + std::vector m_regs_mask; + + std::vector m_memranges; + + std::vector m_aexprs; + + /* True is the user requested a collection of "$_sdata", "static + tracepoint data". */ + bool m_strace_data; + + /* A set of names of wholly collected objects. */ + std::vector m_wholly_collected; + /* A set of computed expressions. */ + std::vector m_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 + parse_static_tracepoint_marker_definition (const char *line, const char **pp, + static_tracepoint_marker *marker); /* 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); -int get_traceframe_number (void); -void set_traceframe_number (int); -struct cleanup *make_cleanup_restore_current_traceframe (void); +/* 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 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 scoped_restore_current_traceframe +{ + scoped_restore_current_traceframe (); + + ~scoped_restore_current_traceframe () + { + set_current_traceframe (m_traceframe_number); + } + + DISABLE_COPY_AND_ASSIGN (scoped_restore_current_traceframe); + +private: + + /* The traceframe we were inspecting. */ + int m_traceframe_number; +}; void free_actions (struct breakpoint *); -extern void validate_actionline (char **, struct breakpoint *); -extern void end_actions_pseudocommand (char *args, int from_tty); -extern void while_stepping_pseudocommand (char *args, int from_tty); +extern const char *decode_agent_options (const char *exp, int *trace_string); + +extern void encode_actions (struct bp_location *tloc, + struct collection_list *tracepoint_list, + struct collection_list *stepping_list); + +extern void encode_actions_rsp (struct bp_location *tloc, + std::vector *tdp_actions, + std::vector *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, + const char *srctype, const char *src, char *buf, int buf_size); -extern void parse_trace_status (char *line, struct trace_status *ts); +extern void parse_trace_status (const char *line, struct trace_status *ts); + +extern void parse_tracepoint_status (const char *p, struct breakpoint *tp, + struct uploaded_tp *utp); -extern void parse_tracepoint_definition (char *line, +extern void parse_tracepoint_definition (const char *line, struct uploaded_tp **utpp); -extern void parse_tsv_definition (char *line, struct uploaded_tsv **utsvp); +extern void parse_tsv_definition (const char *line, struct uploaded_tsv **utsvp); extern struct uploaded_tp *get_uploaded_tp (int num, ULONGEST addr, struct uploaded_tp **utpp); -extern struct breakpoint *create_tracepoint_from_upload (struct uploaded_tp *utp); +extern void free_uploaded_tps (struct uploaded_tp **utpp); + +extern struct uploaded_tsv *get_uploaded_tsv (int num, + struct uploaded_tsv **utsvp); +extern void free_uploaded_tsvs (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 disconnect_tracing (int from_tty); +extern void query_if_trace_running (int from_tty); +extern void disconnect_tracing (void); +extern void trace_reset_local_state (void); + +extern void check_trace_running (struct trace_status *); -extern void start_tracing (void); -extern void stop_tracing (void); +extern void start_tracing (const char *notes); +extern void stop_tracing (const 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); +/* Enumeration of the kinds of traceframe searches that a target may + be able to perform. */ + +enum trace_find_type +{ + tfind_number, + tfind_pc, + tfind_tp, + tfind_range, + tfind_outside, +}; + extern void tfind_1 (enum trace_find_type type, int num, - ULONGEST addr1, ULONGEST addr2, + CORE_ADDR addr1, CORE_ADDR addr2, int from_tty); -extern void trace_save (const char *filename, int target_does_save); +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 traceframe_info_up parse_traceframe_info (const char *tframe_info); + +extern int traceframe_available_memory (std::vector *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); -extern struct traceframe_info *parse_traceframe_info (const char *tframe_info); +/* Command element for the 'while-stepping' command. */ +extern cmd_list_element *while_stepping_cmd_element; #endif /* TRACEPOINT_H */