X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Ftracepoint.h;h=440effb39d6a08228ce373aa345c93048342e7a9;hb=747cfc8c6bb23d40b3fa987f6c3df9d3a0d7b817;hp=9a874eb897d56eef55f0b779382e810b7e4959c1;hpb=dc673c81ae099d18e348ef2a7b93794cc9f8e33b;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/tracepoint.h b/gdb/tracepoint.h index 9a874eb897..440effb39d 100644 --- a/gdb/tracepoint.h +++ b/gdb/tracepoint.h @@ -1,5 +1,5 @@ /* Data structures associated with tracepoints in GDB. - Copyright (C) 1997-2013 Free Software Foundation, Inc. + Copyright (C) 1997-2019 Free Software Foundation, Inc. This file is part of GDB. @@ -20,21 +20,25 @@ #define TRACEPOINT_H 1 #include "breakpoint.h" -#include "target.h" #include "memrange.h" -#include "gdb_vecs.h" +#include "gdbsupport/gdb_vecs.h" + +#include +#include /* An object describing the contents of a traceframe. */ struct traceframe_info { /* Collected memory. */ - VEC(mem_range_s) *memory; + std::vector memory; /* Collected trace state variables. */ - VEC(int) *tvars; + 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 and assigned to by tracepoint actions and conditionals, but is not @@ -43,29 +47,33 @@ struct traceframe_info 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_) + {} + + /* The variable's name. The user has to prefix with a dollar sign, + but we don't store that internally. */ + std::string name; - /* An id number assigned by GDB, and transmitted to targets. */ - int number; + /* An id number assigned by GDB, and transmitted to targets. */ + int number = 0; - /* The initial value of a variable is a 64-bit signed integer. */ - LONGEST initial_value; + /* The initial value of a variable is a 64-bit signed integer. */ + LONGEST initial_value = 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; + /* 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; - /* The value of a variable is a 64-bit signed integer. */ - LONGEST value; + /* 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; - }; + /* 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. */ @@ -74,7 +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, @@ -155,42 +163,44 @@ extern char *default_collect; extern int trace_regblock_size; +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; + int hit_count = 0; /* The tracepoint's current traceframe usage. */ - ULONGEST 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. */ @@ -208,123 +218,31 @@ struct uploaded_tsv struct static_tracepoint_marker { - struct gdbarch *gdbarch; - CORE_ADDR address; - - /* The string ID of the marker. */ - char *str_id; + DISABLE_COPY_AND_ASSIGN (static_tracepoint_marker); - /* Extra target reported info associated with the marker. */ - char *extra; -}; + static_tracepoint_marker () = default; + static_tracepoint_marker (static_tracepoint_marker &&) = default; + static_tracepoint_marker &operator= (static_tracepoint_marker &&) = default; -struct trace_file_writer; + struct gdbarch *gdbarch = NULL; + CORE_ADDR address = 0; -/* Operations to write trace frames to a specific trace format. */ + /* The string ID of the marker. */ + std::string str_id; -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); + /* Extra target reported info associated with the marker. */ + std::string extra; }; -/* Operations to write trace buffers to a specific trace format. */ - -struct trace_file_write_ops +struct memrange { - /* 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. */ + memrange (int type_, bfd_signed_vma start_, bfd_signed_vma end_) + : type (type_), start (start_), end (end_) + {} -struct trace_file_writer -{ - const struct trace_file_write_ops *ops; -}; + memrange () + {} -struct memrange -{ /* memrange_absolute for absolute memory range, else basereg number. */ int type; @@ -332,34 +250,69 @@ struct memrange bfd_signed_vma end; }; -struct collection_list +class collection_list { - /* room for up to 256 regs */ - unsigned char regs_mask[32]; - long listsize; - long next_memrange; - struct memrange *list; +public: + collection_list (); + + void add_wholly_collected (const char *print_name); + + void append_exp (struct expression *exp); - /* size of array pointed to by expr_list elt. */ - long aexpr_listsize; - long next_aexpr_elt; - struct agent_expr **aexpr_list; + /* 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". */ - int strace_data; + bool m_strace_data; /* A set of names of wholly collected objects. */ - VEC(char_ptr) *wholly_collected; + std::vector m_wholly_collected; /* A set of computed expressions. */ - VEC(char_ptr) *computed; + 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 free_current_marker (void *arg); +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. */ @@ -372,33 +325,39 @@ 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); +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 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 (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); + 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); @@ -410,22 +369,25 @@ extern struct trace_state_variable * 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 (char *p, struct breakpoint *tp, +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 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); @@ -434,14 +396,28 @@ 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 check_trace_running (struct trace_status *); + +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, CORE_ADDR addr1, CORE_ADDR addr2, int from_tty); @@ -451,13 +427,16 @@ extern void trace_save_tfile (const char *filename, extern void trace_save_ctf (const char *dirname, int target_does_save); -extern struct traceframe_info *parse_traceframe_info (const char *tframe_info); +extern traceframe_info_up parse_traceframe_info (const char *tframe_info); -extern int traceframe_available_memory (VEC(mem_range_s) **result, +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); +/* Command element for the 'while-stepping' command. */ +extern cmd_list_element *while_stepping_cmd_element; + #endif /* TRACEPOINT_H */