X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=gdb%2Frecord-btrace.c;h=65d6a254ff06c0c0b83ae5f115e65e11194a080e;hb=d806ea2d0ef362fcddd2c1659f537b68aa114203;hp=661ce53cefb66719a8a19387ef6c05f00123d7d4;hpb=8d297bbf604c8318ffc72d5a7b3db654409c5ed9;p=external%2Fbinutils.git diff --git a/gdb/record-btrace.c b/gdb/record-btrace.c index 661ce53..65d6a25 100644 --- a/gdb/record-btrace.c +++ b/gdb/record-btrace.c @@ -1,6 +1,6 @@ /* Branch trace support for GDB, the GNU debugger. - Copyright (C) 2013-2015 Free Software Foundation, Inc. + Copyright (C) 2013-2019 Free Software Foundation, Inc. Contributed by Intel Corp. @@ -21,11 +21,12 @@ #include "defs.h" #include "record.h" +#include "record-btrace.h" #include "gdbthread.h" #include "target.h" #include "gdbcmd.h" #include "disasm.h" -#include "observer.h" +#include "observable.h" #include "cli/cli-utils.h" #include "source.h" #include "ui-out.h" @@ -37,13 +38,113 @@ #include "infrun.h" #include "event-loop.h" #include "inf-loop.h" -#include "vec.h" +#include "gdbsupport/vec.h" +#include "inferior.h" +#include +#include "gdbarch.h" + +static const target_info record_btrace_target_info = { + "record-btrace", + N_("Branch tracing target"), + N_("Collect control-flow trace and provide the execution history.") +}; /* The target_ops of record-btrace. */ -static struct target_ops record_btrace_ops; -/* A new thread observer enabling branch tracing for the new thread. */ -static struct observer *record_btrace_thread_observer; +class record_btrace_target final : public target_ops +{ +public: + const target_info &info () const override + { return record_btrace_target_info; } + + strata stratum () const override { return record_stratum; } + + void close () override; + void async (int) override; + + void detach (inferior *inf, int from_tty) override + { record_detach (this, inf, from_tty); } + + void disconnect (const char *, int) override; + + void mourn_inferior () override + { record_mourn_inferior (this); } + + void kill () override + { record_kill (this); } + + enum record_method record_method (ptid_t ptid) override; + + void stop_recording () override; + void info_record () override; + + void insn_history (int size, gdb_disassembly_flags flags) override; + void insn_history_from (ULONGEST from, int size, + gdb_disassembly_flags flags) override; + void insn_history_range (ULONGEST begin, ULONGEST end, + gdb_disassembly_flags flags) override; + void call_history (int size, record_print_flags flags) override; + void call_history_from (ULONGEST begin, int size, record_print_flags flags) + override; + void call_history_range (ULONGEST begin, ULONGEST end, record_print_flags flags) + override; + + bool record_is_replaying (ptid_t ptid) override; + bool record_will_replay (ptid_t ptid, int dir) override; + void record_stop_replaying () override; + + enum target_xfer_status xfer_partial (enum target_object object, + const char *annex, + gdb_byte *readbuf, + const gdb_byte *writebuf, + ULONGEST offset, ULONGEST len, + ULONGEST *xfered_len) override; + + int insert_breakpoint (struct gdbarch *, + struct bp_target_info *) override; + int remove_breakpoint (struct gdbarch *, struct bp_target_info *, + enum remove_bp_reason) override; + + void fetch_registers (struct regcache *, int) override; + + void store_registers (struct regcache *, int) override; + void prepare_to_store (struct regcache *) override; + + const struct frame_unwind *get_unwinder () override; + + const struct frame_unwind *get_tailcall_unwinder () override; + + void commit_resume () override; + void resume (ptid_t, int, enum gdb_signal) override; + ptid_t wait (ptid_t, struct target_waitstatus *, int) override; + + void stop (ptid_t) override; + void update_thread_list () override; + bool thread_alive (ptid_t ptid) override; + void goto_record_begin () override; + void goto_record_end () override; + void goto_record (ULONGEST insn) override; + + bool can_execute_reverse () override; + + bool stopped_by_sw_breakpoint () override; + bool supports_stopped_by_sw_breakpoint () override; + + bool stopped_by_hw_breakpoint () override; + bool supports_stopped_by_hw_breakpoint () override; + + enum exec_direction_kind execution_direction () override; + void prepare_to_generate_core () override; + void done_generating_core () override; +}; + +static record_btrace_target record_btrace_ops; + +/* Initialize the record-btrace target ops. */ + +/* Token associated with a new-thread observer enabling branch tracing + for the new thread. */ +static const gdb::observers::token record_btrace_thread_observer_token {}; /* Memory access types used in set/show record btrace replay-memory-access. */ static const char replay_memory_access_read_only[] = "read-only"; @@ -58,6 +159,20 @@ static const char *const replay_memory_access_types[] = /* The currently allowed replay memory access type. */ static const char *replay_memory_access = replay_memory_access_read_only; +/* The cpu state kinds. */ +enum record_btrace_cpu_state_kind +{ + CS_AUTO, + CS_NONE, + CS_CPU +}; + +/* The current cpu state. */ +static enum record_btrace_cpu_state_kind record_btrace_cpu_state = CS_AUTO; + +/* The current cpu for trace decode. */ +static struct btrace_cpu record_btrace_cpu; + /* Command lists for "set/show record btrace". */ static struct cmd_list_element *set_record_btrace_cmdlist; static struct cmd_list_element *show_record_btrace_cmdlist; @@ -85,6 +200,9 @@ static struct cmd_list_element *show_record_btrace_bts_cmdlist; static struct cmd_list_element *set_record_btrace_pt_cmdlist; static struct cmd_list_element *show_record_btrace_pt_cmdlist; +/* Command list for "set record btrace cpu". */ +static struct cmd_list_element *set_record_btrace_cpu_cmdlist; + /* Print a record-btrace debug message. Use do ... while (0) to avoid ambiguities when used in if statements. */ @@ -98,6 +216,26 @@ static struct cmd_list_element *show_record_btrace_pt_cmdlist; while (0) +/* Return the cpu configured by the user. Returns NULL if the cpu was + configured as auto. */ +const struct btrace_cpu * +record_btrace_get_cpu (void) +{ + switch (record_btrace_cpu_state) + { + case CS_AUTO: + return nullptr; + + case CS_NONE: + record_btrace_cpu.vendor = CV_UNKNOWN; + /* Fall through. */ + case CS_CPU: + return &record_btrace_cpu; + } + + error (_("Internal error: bad record btrace cpu state.")); +} + /* Update the branch trace for the current thread and return a pointer to its thread_info. @@ -107,15 +245,16 @@ static struct cmd_list_element *show_record_btrace_pt_cmdlist; static struct thread_info * require_btrace_thread (void) { - struct thread_info *tp; - DEBUG ("require"); - tp = find_thread_ptid (inferior_ptid); - if (tp == NULL) + if (inferior_ptid == null_ptid) error (_("No thread.")); - btrace_fetch (tp); + thread_info *tp = inferior_thread (); + + validate_registers_access (); + + btrace_fetch (tp, record_btrace_get_cpu ()); if (btrace_is_empty (tp)) error (_("No trace.")); @@ -144,25 +283,14 @@ require_btrace (void) static void record_btrace_enable_warn (struct thread_info *tp) { - TRY + try { btrace_enable (tp, &record_btrace_conf); } - CATCH (error, RETURN_MASK_ERROR) + catch (const gdb_exception_error &error) { - warning ("%s", error.message); + warning ("%s", error.what ()); } - END_CATCH -} - -/* Callback function to disable branch tracing for one thread. */ - -static void -record_btrace_disable_callback (void *arg) -{ - struct thread_info *tp = (struct thread_info *) arg; - - btrace_disable (tp); } /* Enable automatic tracing of new threads. */ @@ -172,8 +300,8 @@ record_btrace_auto_enable (void) { DEBUG ("attach thread observer"); - record_btrace_thread_observer - = observer_attach_new_thread (record_btrace_enable_warn); + gdb::observers::new_thread.attach (record_btrace_enable_warn, + record_btrace_thread_observer_token); } /* Disable automatic tracing of new threads. */ @@ -181,14 +309,9 @@ record_btrace_auto_enable (void) static void record_btrace_auto_disable (void) { - /* The observer may have been detached, already. */ - if (record_btrace_thread_observer == NULL) - return; - DEBUG ("detach thread observer"); - observer_detach_new_thread (record_btrace_thread_observer); - record_btrace_thread_observer = NULL; + gdb::observers::new_thread.detach (record_btrace_thread_observer_token); } /* The record-btrace async event handler function. */ @@ -199,13 +322,62 @@ record_btrace_handle_async_inferior_event (gdb_client_data data) inferior_event_handler (INF_REG_EVENT, NULL); } -/* The to_open method of target record-btrace. */ +/* See record-btrace.h. */ + +void +record_btrace_push_target (void) +{ + const char *format; + + record_btrace_auto_enable (); + + push_target (&record_btrace_ops); + + record_btrace_async_inferior_event_handler + = create_async_event_handler (record_btrace_handle_async_inferior_event, + NULL); + record_btrace_generating_corefile = 0; + + format = btrace_format_short_string (record_btrace_conf.format); + gdb::observers::record_changed.notify (current_inferior (), 1, "btrace", format); +} + +/* Disable btrace on a set of threads on scope exit. */ + +struct scoped_btrace_disable +{ + scoped_btrace_disable () = default; + + DISABLE_COPY_AND_ASSIGN (scoped_btrace_disable); + + ~scoped_btrace_disable () + { + for (thread_info *tp : m_threads) + btrace_disable (tp); + } + + void add_thread (thread_info *thread) + { + m_threads.push_front (thread); + } + + void discard () + { + m_threads.clear (); + } + +private: + std::forward_list m_threads; +}; + +/* Open target record-btrace. */ static void -record_btrace_open (const char *args, int from_tty) +record_btrace_target_open (const char *args, int from_tty) { - struct cleanup *disable_chain; - struct thread_info *tp; + /* If we fail to enable btrace for one thread, disable it for the threads for + which it was successfully enabled. */ + scoped_btrace_disable btrace_disable; DEBUG ("open"); @@ -214,54 +386,53 @@ record_btrace_open (const char *args, int from_tty) if (!target_has_execution) error (_("The program is not being run.")); - gdb_assert (record_btrace_thread_observer == NULL); - - disable_chain = make_cleanup (null_cleanup, NULL); - ALL_NON_EXITED_THREADS (tp) - if (args == NULL || *args == 0 || number_is_in_list (args, tp->num)) + for (thread_info *tp : all_non_exited_threads ()) + if (args == NULL || *args == 0 || number_is_in_list (args, tp->global_num)) { btrace_enable (tp, &record_btrace_conf); - make_cleanup (record_btrace_disable_callback, tp); + btrace_disable.add_thread (tp); } - record_btrace_auto_enable (); - - push_target (&record_btrace_ops); + record_btrace_push_target (); - record_btrace_async_inferior_event_handler - = create_async_event_handler (record_btrace_handle_async_inferior_event, - NULL); - record_btrace_generating_corefile = 0; - - observer_notify_record_changed (current_inferior (), 1); - - discard_cleanups (disable_chain); + btrace_disable.discard (); } -/* The to_stop_recording method of target record-btrace. */ +/* The stop_recording method of target record-btrace. */ -static void -record_btrace_stop_recording (struct target_ops *self) +void +record_btrace_target::stop_recording () { - struct thread_info *tp; - DEBUG ("stop recording"); record_btrace_auto_disable (); - ALL_NON_EXITED_THREADS (tp) + for (thread_info *tp : all_non_exited_threads ()) if (tp->btrace.target != NULL) btrace_disable (tp); } -/* The to_close method of target record-btrace. */ +/* The disconnect method of target record-btrace. */ -static void -record_btrace_close (struct target_ops *self) +void +record_btrace_target::disconnect (const char *args, + int from_tty) { - struct thread_info *tp; + struct target_ops *beneath = this->beneath (); + /* Do not stop recording, just clean up GDB side. */ + unpush_target (this); + + /* Forward disconnect. */ + beneath->disconnect (args, from_tty); +} + +/* The close method of target record-btrace. */ + +void +record_btrace_target::close () +{ if (record_btrace_async_inferior_event_handler != NULL) delete_async_event_handler (&record_btrace_async_inferior_event_handler); @@ -271,21 +442,21 @@ record_btrace_close (struct target_ops *self) /* We should have already stopped recording. Tear down btrace in case we have not. */ - ALL_NON_EXITED_THREADS (tp) + for (thread_info *tp : all_non_exited_threads ()) btrace_teardown (tp); } -/* The to_async method of target record-btrace. */ +/* The async method of target record-btrace. */ -static void -record_btrace_async (struct target_ops *ops, int enable) +void +record_btrace_target::async (int enable) { if (enable) mark_async_event_handler (record_btrace_async_inferior_event_handler); else clear_async_event_handler (record_btrace_async_inferior_event_handler); - ops->beneath->to_async (ops->beneath, enable); + this->beneath ()->async (enable); } /* Adjusts the size and returns a human readable size suffix. */ @@ -332,7 +503,7 @@ record_btrace_print_bts_conf (const struct btrace_config_bts *conf) } } -/* Print an Intel(R) Processor Trace configuration. */ +/* Print an Intel Processor Trace configuration. */ static void record_btrace_print_pt_conf (const struct btrace_config_pt *conf) @@ -373,10 +544,10 @@ record_btrace_print_conf (const struct btrace_config *conf) internal_error (__FILE__, __LINE__, _("Unkown branch trace format.")); } -/* The to_info_record method of target record-btrace. */ +/* The info_record method of target record-btrace. */ -static void -record_btrace_info (struct target_ops *self) +void +record_btrace_target::info_record () { struct btrace_thread_info *btinfo; const struct btrace_config *conf; @@ -389,13 +560,15 @@ record_btrace_info (struct target_ops *self) if (tp == NULL) error (_("No thread.")); + validate_registers_access (); + btinfo = &tp->btrace; - conf = btrace_conf (btinfo); + conf = ::btrace_conf (btinfo); if (conf != NULL) record_btrace_print_conf (conf); - btrace_fetch (tp); + btrace_fetch (tp, record_btrace_get_cpu ()); insns = 0; calls = 0; @@ -411,35 +584,20 @@ record_btrace_info (struct target_ops *self) calls = btrace_call_number (&call); btrace_insn_end (&insn, btinfo); - insns = btrace_insn_number (&insn); - if (insns != 0) - { - /* The last instruction does not really belong to the trace. */ - insns -= 1; - } - else - { - unsigned int steps; - /* Skip gaps at the end. */ - do - { - steps = btrace_insn_prev (&insn, 1); - if (steps == 0) - break; - - insns = btrace_insn_number (&insn); - } - while (insns == 0); - } + /* If the last instruction is not a gap, it is the current instruction + that is not actually part of the record. */ + if (btrace_insn_get (&insn) != NULL) + insns -= 1; gaps = btinfo->ngaps; } printf_unfiltered (_("Recorded %u instructions in %u functions (%u gaps) " - "for thread %d (%s).\n"), insns, calls, gaps, - tp->num, target_pid_to_str (tp->ptid)); + "for thread %s (%s).\n"), insns, calls, gaps, + print_thread_id (tp), + target_pid_to_str (tp->ptid).c_str ()); if (btrace_is_replaying (tp)) printf_unfiltered (_("Replay in progress. At instruction %u.\n"), @@ -452,78 +610,18 @@ static void btrace_ui_out_decode_error (struct ui_out *uiout, int errcode, enum btrace_format format) { - const char *errstr; - int is_error; - - errstr = _("unknown"); - is_error = 1; - - switch (format) - { - default: - break; + const char *errstr = btrace_decode_error (format, errcode); - case BTRACE_FORMAT_BTS: - switch (errcode) - { - default: - break; - - case BDE_BTS_OVERFLOW: - errstr = _("instruction overflow"); - break; - - case BDE_BTS_INSN_SIZE: - errstr = _("unknown instruction"); - break; - } - break; - -#if defined (HAVE_LIBIPT) - case BTRACE_FORMAT_PT: - switch (errcode) - { - case BDE_PT_USER_QUIT: - is_error = 0; - errstr = _("trace decode cancelled"); - break; - - case BDE_PT_DISABLED: - is_error = 0; - errstr = _("disabled"); - break; - - case BDE_PT_OVERFLOW: - is_error = 0; - errstr = _("overflow"); - break; - - default: - if (errcode < 0) - errstr = pt_errstr (pt_errcode (errcode)); - break; - } - break; -#endif /* defined (HAVE_LIBIPT) */ - } - - ui_out_text (uiout, _("[")); - if (is_error) + uiout->text (_("[")); + /* ERRCODE > 0 indicates notifications on BTRACE_FORMAT_PT. */ + if (!(format == BTRACE_FORMAT_PT && errcode > 0)) { - ui_out_text (uiout, _("decode error (")); - ui_out_field_int (uiout, "errcode", errcode); - ui_out_text (uiout, _("): ")); + uiout->text (_("decode error (")); + uiout->field_signed ("errcode", errcode); + uiout->text (_("): ")); } - ui_out_text (uiout, errstr); - ui_out_text (uiout, _("]\n")); -} - -/* Print an unsigned int. */ - -static void -ui_out_field_uint (struct ui_out *uiout, const char *fld, unsigned int val) -{ - ui_out_field_fmt (uiout, fld, "%u", val); + uiout->text (errstr); + uiout->text (_("]\n")); } /* A range of source lines. */ @@ -637,26 +735,24 @@ btrace_find_line_range (CORE_ADDR pc) static void btrace_print_lines (struct btrace_line_range lines, struct ui_out *uiout, - struct cleanup **ui_item_chain, int flags) + gdb::optional *src_and_asm_tuple, + gdb::optional *asm_list, + gdb_disassembly_flags flags) { print_source_lines_flags psl_flags; - int line; - psl_flags = 0; if (flags & DISASSEMBLY_FILENAME) psl_flags |= PRINT_SOURCE_LINES_FILENAME; - for (line = lines.begin; line < lines.end; ++line) + for (int line = lines.begin; line < lines.end; ++line) { - if (*ui_item_chain != NULL) - do_cleanups (*ui_item_chain); + asm_list->reset (); - *ui_item_chain - = make_cleanup_ui_out_tuple_begin_end (uiout, "src_and_asm_line"); + src_and_asm_tuple->emplace (uiout, "src_and_asm_line"); print_source_lines (lines.symtab, line, line + 1, psl_flags); - make_cleanup_ui_out_list_begin_end (uiout, "line_asm_insn"); + asm_list->emplace (uiout, "line_asm_insn"); } } @@ -666,33 +762,26 @@ static void btrace_insn_history (struct ui_out *uiout, const struct btrace_thread_info *btinfo, const struct btrace_insn_iterator *begin, - const struct btrace_insn_iterator *end, int flags) + const struct btrace_insn_iterator *end, + gdb_disassembly_flags flags) { - struct ui_file *stb; - struct cleanup *cleanups, *ui_item_chain; - struct disassemble_info di; - struct gdbarch *gdbarch; - struct btrace_insn_iterator it; - struct btrace_line_range last_lines; - - DEBUG ("itrace (0x%x): [%u; %u)", flags, btrace_insn_number (begin), - btrace_insn_number (end)); + DEBUG ("itrace (0x%x): [%u; %u)", (unsigned) flags, + btrace_insn_number (begin), btrace_insn_number (end)); flags |= DISASSEMBLY_SPECULATIVE; - gdbarch = target_gdbarch (); - stb = mem_fileopen (); - cleanups = make_cleanup_ui_file_delete (stb); - di = gdb_disassemble_info (gdbarch, stb); - last_lines = btrace_mk_line_range (NULL, 0, 0); + struct gdbarch *gdbarch = target_gdbarch (); + btrace_line_range last_lines = btrace_mk_line_range (NULL, 0, 0); - make_cleanup_ui_out_list_begin_end (uiout, "asm_insns"); + ui_out_emit_list list_emitter (uiout, "asm_insns"); - /* UI_ITEM_CHAIN is a cleanup chain for the last source line and the - instructions corresponding to that line. */ - ui_item_chain = NULL; + gdb::optional src_and_asm_tuple; + gdb::optional asm_list; - for (it = *begin; btrace_insn_cmp (&it, end) != 0; btrace_insn_next (&it, 1)) + gdb_pretty_print_disassembler disasm (gdbarch, uiout); + + for (btrace_insn_iterator it = *begin; btrace_insn_cmp (&it, end) != 0; + btrace_insn_next (&it, 1)) { const struct btrace_insn *insn; @@ -708,7 +797,11 @@ btrace_insn_history (struct ui_out *uiout, /* We have trace so we must have a configuration. */ gdb_assert (conf != NULL); - btrace_ui_out_decode_error (uiout, it.function->errcode, + uiout->field_fmt ("insn-number", "%u", + btrace_insn_number (&it)); + uiout->text ("\t"); + + btrace_ui_out_decode_error (uiout, btrace_insn_get_error (&it), conf->format); } else @@ -723,19 +816,22 @@ btrace_insn_history (struct ui_out *uiout, if (!btrace_line_range_is_empty (lines) && !btrace_line_range_contains_range (last_lines, lines)) { - btrace_print_lines (lines, uiout, &ui_item_chain, flags); + btrace_print_lines (lines, uiout, &src_and_asm_tuple, &asm_list, + flags); last_lines = lines; } - else if (ui_item_chain == NULL) + else if (!src_and_asm_tuple.has_value ()) { - ui_item_chain - = make_cleanup_ui_out_tuple_begin_end (uiout, - "src_and_asm_line"); + gdb_assert (!asm_list.has_value ()); + + src_and_asm_tuple.emplace (uiout, "src_and_asm_line"); + /* No source information. */ - make_cleanup_ui_out_list_begin_end (uiout, "line_asm_insn"); + asm_list.emplace (uiout, "line_asm_insn"); } - gdb_assert (ui_item_chain != NULL); + gdb_assert (src_and_asm_tuple.has_value ()); + gdb_assert (asm_list.has_value ()); } memset (&dinsn, 0, sizeof (dinsn)); @@ -745,28 +841,24 @@ btrace_insn_history (struct ui_out *uiout, if ((insn->flags & BTRACE_INSN_FLAG_SPECULATIVE) != 0) dinsn.is_speculative = 1; - gdb_pretty_print_insn (gdbarch, uiout, &di, &dinsn, flags, stb); + disasm.pretty_print_insn (&dinsn, flags); } } - - do_cleanups (cleanups); } -/* The to_insn_history method of target record-btrace. */ +/* The insn_history method of target record-btrace. */ -static void -record_btrace_insn_history (struct target_ops *self, int size, int flags) +void +record_btrace_target::insn_history (int size, gdb_disassembly_flags flags) { struct btrace_thread_info *btinfo; struct btrace_insn_history *history; struct btrace_insn_iterator begin, end; - struct cleanup *uiout_cleanup; struct ui_out *uiout; unsigned int context, covered; uiout = current_uiout; - uiout_cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, - "insn history"); + ui_out_emit_tuple tuple_emitter (uiout, "insn history"); context = abs (size); if (context == 0) error (_("Bad record instruction-history-size.")); @@ -777,7 +869,7 @@ record_btrace_insn_history (struct target_ops *self, int size, int flags) { struct btrace_insn_iterator *replay; - DEBUG ("insn-history (0x%x): %d", flags, size); + DEBUG ("insn-history (0x%x): %d", (unsigned) flags, size); /* If we're replaying, we start at the replay position. Otherwise, we start at the tail of the trace. */ @@ -809,7 +901,7 @@ record_btrace_insn_history (struct target_ops *self, int size, int flags) begin = history->begin; end = history->end; - DEBUG ("insn-history (0x%x): %d, prev: [%u; %u)", flags, size, + DEBUG ("insn-history (0x%x): %d, prev: [%u; %u)", (unsigned) flags, size, btrace_insn_number (&begin), btrace_insn_number (&end)); if (size < 0) @@ -835,30 +927,26 @@ record_btrace_insn_history (struct target_ops *self, int size, int flags) } btrace_set_insn_history (btinfo, &begin, &end); - do_cleanups (uiout_cleanup); } -/* The to_insn_history_range method of target record-btrace. */ +/* The insn_history_range method of target record-btrace. */ -static void -record_btrace_insn_history_range (struct target_ops *self, - ULONGEST from, ULONGEST to, int flags) +void +record_btrace_target::insn_history_range (ULONGEST from, ULONGEST to, + gdb_disassembly_flags flags) { struct btrace_thread_info *btinfo; - struct btrace_insn_history *history; struct btrace_insn_iterator begin, end; - struct cleanup *uiout_cleanup; struct ui_out *uiout; unsigned int low, high; int found; uiout = current_uiout; - uiout_cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, - "insn history"); + ui_out_emit_tuple tuple_emitter (uiout, "insn history"); low = from; high = to; - DEBUG ("insn-history (0x%x): [%u; %u)", flags, low, high); + DEBUG ("insn-history (0x%x): [%u; %u)", (unsigned) flags, low, high); /* Check for wrap-arounds. */ if (low != from || high != to) @@ -887,15 +975,13 @@ record_btrace_insn_history_range (struct target_ops *self, btrace_insn_history (uiout, btinfo, &begin, &end, flags); btrace_set_insn_history (btinfo, &begin, &end); - - do_cleanups (uiout_cleanup); } -/* The to_insn_history_from method of target record-btrace. */ +/* The insn_history_from method of target record-btrace. */ -static void -record_btrace_insn_history_from (struct target_ops *self, - ULONGEST from, int size, int flags) +void +record_btrace_target::insn_history_from (ULONGEST from, int size, + gdb_disassembly_flags flags) { ULONGEST begin, end, context; @@ -922,7 +1008,7 @@ record_btrace_insn_history_from (struct target_ops *self, end = ULONGEST_MAX; } - record_btrace_insn_history_range (self, begin, end, flags); + insn_history_range (begin, end, flags); } /* Print the instruction number range for a function call history line. */ @@ -933,15 +1019,15 @@ btrace_call_history_insn_range (struct ui_out *uiout, { unsigned int begin, end, size; - size = VEC_length (btrace_insn_s, bfun->insn); + size = bfun->insn.size (); gdb_assert (size > 0); begin = bfun->insn_offset; end = begin + size - 1; - ui_out_field_uint (uiout, "insn begin", begin); - ui_out_text (uiout, ","); - ui_out_field_uint (uiout, "insn end", end); + uiout->field_unsigned ("insn begin", begin); + uiout->text (","); + uiout->field_unsigned ("insn end", end); } /* Compute the lowest and highest source line for the instructions in BFUN @@ -953,10 +1039,8 @@ static void btrace_compute_src_line_range (const struct btrace_function *bfun, int *pbegin, int *pend) { - struct btrace_insn *insn; struct symtab *symtab; struct symbol *sym; - unsigned int idx; int begin, end; begin = INT_MAX; @@ -968,16 +1052,16 @@ btrace_compute_src_line_range (const struct btrace_function *bfun, symtab = symbol_symtab (sym); - for (idx = 0; VEC_iterate (btrace_insn_s, bfun->insn, idx, insn); ++idx) + for (const btrace_insn &insn : bfun->insn) { struct symtab_and_line sal; - sal = find_pc_line (insn->pc, 0); + sal = find_pc_line (insn.pc, 0); if (sal.symtab != symtab || sal.line == 0) continue; - begin = min (begin, sal.line); - end = max (end, sal.line); + begin = std::min (begin, sal.line); + end = std::max (end, sal.line); } out: @@ -998,21 +1082,22 @@ btrace_call_history_src_line (struct ui_out *uiout, if (sym == NULL) return; - ui_out_field_string (uiout, "file", - symtab_to_filename_for_display (symbol_symtab (sym))); + uiout->field_string ("file", + symtab_to_filename_for_display (symbol_symtab (sym)), + ui_out_style_kind::FILE); btrace_compute_src_line_range (bfun, &begin, &end); if (end < begin) return; - ui_out_text (uiout, ":"); - ui_out_field_int (uiout, "min line", begin); + uiout->text (":"); + uiout->field_signed ("min line", begin); if (end == begin) return; - ui_out_text (uiout, ","); - ui_out_field_int (uiout, "max line", end); + uiout->text (","); + uiout->field_signed ("max line", end); } /* Get the name of a branch trace function. */ @@ -1063,8 +1148,8 @@ btrace_call_history (struct ui_out *uiout, msym = bfun->msym; /* Print the function index. */ - ui_out_field_uint (uiout, "index", bfun->number); - ui_out_text (uiout, "\t"); + uiout->field_unsigned ("index", bfun->number); + uiout->text ("\t"); /* Indicate gaps in the trace. */ if (bfun->errcode != 0) @@ -1086,48 +1171,48 @@ btrace_call_history (struct ui_out *uiout, int level = bfun->level + btinfo->level, i; for (i = 0; i < level; ++i) - ui_out_text (uiout, " "); + uiout->text (" "); } if (sym != NULL) - ui_out_field_string (uiout, "function", SYMBOL_PRINT_NAME (sym)); + uiout->field_string ("function", SYMBOL_PRINT_NAME (sym), + ui_out_style_kind::FUNCTION); else if (msym != NULL) - ui_out_field_string (uiout, "function", MSYMBOL_PRINT_NAME (msym)); - else if (!ui_out_is_mi_like_p (uiout)) - ui_out_field_string (uiout, "function", "??"); + uiout->field_string ("function", MSYMBOL_PRINT_NAME (msym), + ui_out_style_kind::FUNCTION); + else if (!uiout->is_mi_like_p ()) + uiout->field_string ("function", "??", + ui_out_style_kind::FUNCTION); if ((flags & RECORD_PRINT_INSN_RANGE) != 0) { - ui_out_text (uiout, _("\tinst ")); + uiout->text (_("\tinst ")); btrace_call_history_insn_range (uiout, bfun); } if ((flags & RECORD_PRINT_SRC_LINE) != 0) { - ui_out_text (uiout, _("\tat ")); + uiout->text (_("\tat ")); btrace_call_history_src_line (uiout, bfun); } - ui_out_text (uiout, "\n"); + uiout->text ("\n"); } } -/* The to_call_history method of target record-btrace. */ +/* The call_history method of target record-btrace. */ -static void -record_btrace_call_history (struct target_ops *self, int size, int int_flags) +void +record_btrace_target::call_history (int size, record_print_flags flags) { struct btrace_thread_info *btinfo; struct btrace_call_history *history; struct btrace_call_iterator begin, end; - struct cleanup *uiout_cleanup; struct ui_out *uiout; unsigned int context, covered; - record_print_flags flags = (enum record_print_flag) int_flags; uiout = current_uiout; - uiout_cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, - "insn history"); + ui_out_emit_tuple tuple_emitter (uiout, "insn history"); context = abs (size); if (context == 0) error (_("Bad record function-call-history-size.")); @@ -1138,15 +1223,15 @@ record_btrace_call_history (struct target_ops *self, int size, int int_flags) { struct btrace_insn_iterator *replay; - DEBUG ("call-history (0x%x): %d", int_flags, size); + DEBUG ("call-history (0x%x): %d", (int) flags, size); /* If we're replaying, we start at the replay position. Otherwise, we start at the tail of the trace. */ replay = btinfo->replay; if (replay != NULL) { - begin.function = replay->function; begin.btinfo = btinfo; + begin.index = replay->call_index; } else btrace_call_end (&begin, btinfo); @@ -1173,7 +1258,7 @@ record_btrace_call_history (struct target_ops *self, int size, int int_flags) begin = history->begin; end = history->end; - DEBUG ("call-history (0x%x): %d, prev: [%u; %u)", int_flags, size, + DEBUG ("call-history (0x%x): %d, prev: [%u; %u)", (int) flags, size, btrace_call_number (&begin), btrace_call_number (&end)); if (size < 0) @@ -1199,32 +1284,26 @@ record_btrace_call_history (struct target_ops *self, int size, int int_flags) } btrace_set_call_history (btinfo, &begin, &end); - do_cleanups (uiout_cleanup); } -/* The to_call_history_range method of target record-btrace. */ +/* The call_history_range method of target record-btrace. */ -static void -record_btrace_call_history_range (struct target_ops *self, - ULONGEST from, ULONGEST to, - int int_flags) +void +record_btrace_target::call_history_range (ULONGEST from, ULONGEST to, + record_print_flags flags) { struct btrace_thread_info *btinfo; - struct btrace_call_history *history; struct btrace_call_iterator begin, end; - struct cleanup *uiout_cleanup; struct ui_out *uiout; unsigned int low, high; int found; - record_print_flags flags = (enum record_print_flag) int_flags; uiout = current_uiout; - uiout_cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, - "func history"); + ui_out_emit_tuple tuple_emitter (uiout, "func history"); low = from; high = to; - DEBUG ("call-history (0x%x): [%u; %u)", int_flags, low, high); + DEBUG ("call-history (0x%x): [%u; %u)", (int) flags, low, high); /* Check for wrap-arounds. */ if (low != from || high != to) @@ -1253,19 +1332,15 @@ record_btrace_call_history_range (struct target_ops *self, btrace_call_history (uiout, btinfo, &begin, &end, flags); btrace_set_call_history (btinfo, &begin, &end); - - do_cleanups (uiout_cleanup); } -/* The to_call_history_from method of target record-btrace. */ +/* The call_history_from method of target record-btrace. */ -static void -record_btrace_call_history_from (struct target_ops *self, - ULONGEST from, int size, - int int_flags) +void +record_btrace_target::call_history_from (ULONGEST from, int size, + record_print_flags flags) { ULONGEST begin, end, context; - record_print_flags flags = (enum record_print_flag) int_flags; context = abs (size); if (context == 0) @@ -1290,45 +1365,57 @@ record_btrace_call_history_from (struct target_ops *self, end = ULONGEST_MAX; } - record_btrace_call_history_range (self, begin, end, flags); + call_history_range ( begin, end, flags); } -/* The to_record_is_replaying method of target record-btrace. */ +/* The record_method method of target record-btrace. */ -static int -record_btrace_is_replaying (struct target_ops *self, ptid_t ptid) +enum record_method +record_btrace_target::record_method (ptid_t ptid) { - struct thread_info *tp; + struct thread_info * const tp = find_thread_ptid (ptid); - ALL_NON_EXITED_THREADS (tp) - if (ptid_match (tp->ptid, ptid) && btrace_is_replaying (tp)) - return 1; + if (tp == NULL) + error (_("No thread.")); - return 0; + if (tp->btrace.target == NULL) + return RECORD_METHOD_NONE; + + return RECORD_METHOD_BTRACE; } -/* The to_record_will_replay method of target record-btrace. */ +/* The record_is_replaying method of target record-btrace. */ -static int -record_btrace_will_replay (struct target_ops *self, ptid_t ptid, int dir) +bool +record_btrace_target::record_is_replaying (ptid_t ptid) { - return dir == EXEC_REVERSE || record_btrace_is_replaying (self, ptid); + for (thread_info *tp : all_non_exited_threads (ptid)) + if (btrace_is_replaying (tp)) + return true; + + return false; } -/* The to_xfer_partial method of target record-btrace. */ +/* The record_will_replay method of target record-btrace. */ -static enum target_xfer_status -record_btrace_xfer_partial (struct target_ops *ops, enum target_object object, - const char *annex, gdb_byte *readbuf, - const gdb_byte *writebuf, ULONGEST offset, - ULONGEST len, ULONGEST *xfered_len) +bool +record_btrace_target::record_will_replay (ptid_t ptid, int dir) { - struct target_ops *t; + return dir == EXEC_REVERSE || record_is_replaying (ptid); +} + +/* The xfer_partial method of target record-btrace. */ +enum target_xfer_status +record_btrace_target::xfer_partial (enum target_object object, + const char *annex, gdb_byte *readbuf, + const gdb_byte *writebuf, ULONGEST offset, + ULONGEST len, ULONGEST *xfered_len) +{ /* Filter out requests that don't make sense during replay. */ if (replay_memory_access == replay_memory_access_read_only && !record_btrace_generating_corefile - && record_btrace_is_replaying (ops, inferior_ptid)) + && record_is_replaying (inferior_ptid)) { switch (object) { @@ -1344,7 +1431,7 @@ record_btrace_xfer_partial (struct target_ops *ops, enum target_object object, } /* We allow reading readonly memory. */ - section = target_section_by_addr (ops, offset); + section = target_section_by_addr (this, offset); if (section != NULL) { /* Check if the section we found is readonly. */ @@ -1353,7 +1440,7 @@ record_btrace_xfer_partial (struct target_ops *ops, enum target_object object, & SEC_READONLY) != 0) { /* Truncate the request to fit into this section. */ - len = min (len, section->endaddr - offset); + len = std::min (len, section->endaddr - offset); break; } } @@ -1365,17 +1452,15 @@ record_btrace_xfer_partial (struct target_ops *ops, enum target_object object, } /* Forward the request. */ - ops = ops->beneath; - return ops->to_xfer_partial (ops, object, annex, readbuf, writebuf, - offset, len, xfered_len); + return this->beneath ()->xfer_partial (object, annex, readbuf, writebuf, + offset, len, xfered_len); } -/* The to_insert_breakpoint method of target record-btrace. */ +/* The insert_breakpoint method of target record-btrace. */ -static int -record_btrace_insert_breakpoint (struct target_ops *ops, - struct gdbarch *gdbarch, - struct bp_target_info *bp_tgt) +int +record_btrace_target::insert_breakpoint (struct gdbarch *gdbarch, + struct bp_target_info *bp_tgt) { const char *old; int ret; @@ -1386,27 +1471,26 @@ record_btrace_insert_breakpoint (struct target_ops *ops, replay_memory_access = replay_memory_access_read_write; ret = 0; - TRY + try { - ret = ops->beneath->to_insert_breakpoint (ops->beneath, gdbarch, bp_tgt); + ret = this->beneath ()->insert_breakpoint (gdbarch, bp_tgt); } - CATCH (except, RETURN_MASK_ALL) + catch (const gdb_exception &except) { replay_memory_access = old; - throw_exception (except); + throw; } - END_CATCH replay_memory_access = old; return ret; } -/* The to_remove_breakpoint method of target record-btrace. */ +/* The remove_breakpoint method of target record-btrace. */ -static int -record_btrace_remove_breakpoint (struct target_ops *ops, - struct gdbarch *gdbarch, - struct bp_target_info *bp_tgt) +int +record_btrace_target::remove_breakpoint (struct gdbarch *gdbarch, + struct bp_target_info *bp_tgt, + enum remove_bp_reason reason) { const char *old; int ret; @@ -1417,31 +1501,29 @@ record_btrace_remove_breakpoint (struct target_ops *ops, replay_memory_access = replay_memory_access_read_write; ret = 0; - TRY + try { - ret = ops->beneath->to_remove_breakpoint (ops->beneath, gdbarch, bp_tgt); + ret = this->beneath ()->remove_breakpoint (gdbarch, bp_tgt, reason); } - CATCH (except, RETURN_MASK_ALL) + catch (const gdb_exception &except) { replay_memory_access = old; - throw_exception (except); + throw; } - END_CATCH replay_memory_access = old; return ret; } -/* The to_fetch_registers method of target record-btrace. */ +/* The fetch_registers method of target record-btrace. */ -static void -record_btrace_fetch_registers (struct target_ops *ops, - struct regcache *regcache, int regno) +void +record_btrace_target::fetch_registers (struct regcache *regcache, int regno) { struct btrace_insn_iterator *replay; struct thread_info *tp; - tp = find_thread_ptid (inferior_ptid); + tp = find_thread_ptid (regcache->ptid ()); gdb_assert (tp != NULL); replay = tp->btrace.replay; @@ -1451,7 +1533,7 @@ record_btrace_fetch_registers (struct target_ops *ops, struct gdbarch *gdbarch; int pcreg; - gdbarch = get_regcache_arch (regcache); + gdbarch = regcache->arch (); pcreg = gdbarch_pc_regnum (gdbarch); if (pcreg < 0) return; @@ -1463,48 +1545,36 @@ record_btrace_fetch_registers (struct target_ops *ops, insn = btrace_insn_get (replay); gdb_assert (insn != NULL); - regcache_raw_supply (regcache, regno, &insn->pc); + regcache->raw_supply (regno, &insn->pc); } else - { - struct target_ops *t = ops->beneath; - - t->to_fetch_registers (t, regcache, regno); - } + this->beneath ()->fetch_registers (regcache, regno); } -/* The to_store_registers method of target record-btrace. */ +/* The store_registers method of target record-btrace. */ -static void -record_btrace_store_registers (struct target_ops *ops, - struct regcache *regcache, int regno) +void +record_btrace_target::store_registers (struct regcache *regcache, int regno) { - struct target_ops *t; - if (!record_btrace_generating_corefile - && record_btrace_is_replaying (ops, inferior_ptid)) + && record_is_replaying (regcache->ptid ())) error (_("Cannot write registers while replaying.")); gdb_assert (may_write_registers != 0); - t = ops->beneath; - t->to_store_registers (t, regcache, regno); + this->beneath ()->store_registers (regcache, regno); } -/* The to_prepare_to_store method of target record-btrace. */ +/* The prepare_to_store method of target record-btrace. */ -static void -record_btrace_prepare_to_store (struct target_ops *ops, - struct regcache *regcache) +void +record_btrace_target::prepare_to_store (struct regcache *regcache) { - struct target_ops *t; - if (!record_btrace_generating_corefile - && record_btrace_is_replaying (ops, inferior_ptid)) + && record_is_replaying (regcache->ptid ())) return; - t = ops->beneath; - t->to_prepare_to_store (t, regcache); + this->beneath ()->prepare_to_store (regcache); } /* The branch trace frame cache. */ @@ -1573,7 +1643,6 @@ static const struct btrace_function * btrace_get_frame_function (struct frame_info *frame) { const struct btrace_frame_cache *cache; - const struct btrace_function *bfun; struct btrace_frame_cache pattern; void **slot; @@ -1600,7 +1669,7 @@ record_btrace_frame_unwind_stop_reason (struct frame_info *this_frame, bfun = cache->bfun; gdb_assert (bfun != NULL); - if (bfun->up == NULL) + if (bfun->up == 0) return UNWIND_UNAVAILABLE; return UNWIND_NO_REASON; @@ -1614,6 +1683,7 @@ record_btrace_frame_this_id (struct frame_info *this_frame, void **this_cache, { const struct btrace_frame_cache *cache; const struct btrace_function *bfun; + struct btrace_call_iterator it; CORE_ADDR code, special; cache = (const struct btrace_frame_cache *) *this_cache; @@ -1621,8 +1691,8 @@ record_btrace_frame_this_id (struct frame_info *this_frame, void **this_cache, bfun = cache->bfun; gdb_assert (bfun != NULL); - while (bfun->segment.prev != NULL) - bfun = bfun->segment.prev; + while (btrace_find_call_by_number (&it, &cache->tp->btrace, bfun->prev) != 0) + bfun = btrace_call_get (&it); code = get_frame_func (this_frame); special = bfun->number; @@ -1644,7 +1714,7 @@ record_btrace_frame_prev_register (struct frame_info *this_frame, { const struct btrace_frame_cache *cache; const struct btrace_function *bfun, *caller; - const struct btrace_insn *insn; + struct btrace_call_iterator it; struct gdbarch *gdbarch; CORE_ADDR pc; int pcreg; @@ -1659,21 +1729,17 @@ record_btrace_frame_prev_register (struct frame_info *this_frame, bfun = cache->bfun; gdb_assert (bfun != NULL); - caller = bfun->up; - if (caller == NULL) + if (btrace_find_call_by_number (&it, &cache->tp->btrace, bfun->up) == 0) throw_error (NOT_AVAILABLE_ERROR, _("No caller in btrace record history")); + caller = btrace_call_get (&it); + if ((bfun->flags & BFUN_UP_LINKS_TO_RET) != 0) - { - insn = VEC_index (btrace_insn_s, caller->insn, 0); - pc = insn->pc; - } + pc = caller->insn.front ().pc; else { - insn = VEC_last (btrace_insn_s, caller->insn); - pc = insn->pc; - + pc = caller->insn.back ().pc; pc += gdb_insn_length (gdbarch, pc); } @@ -1697,8 +1763,7 @@ record_btrace_frame_sniffer (const struct frame_unwind *self, struct frame_info *next; /* THIS_FRAME does not contain a reference to its thread. */ - tp = find_thread_ptid (inferior_ptid); - gdb_assert (tp != NULL); + tp = inferior_thread (); bfun = NULL; next = get_next_frame (this_frame); @@ -1708,15 +1773,21 @@ record_btrace_frame_sniffer (const struct frame_unwind *self, replay = tp->btrace.replay; if (replay != NULL) - bfun = replay->function; + bfun = &replay->btinfo->functions[replay->call_index]; } else { const struct btrace_function *callee; + struct btrace_call_iterator it; callee = btrace_get_frame_function (next); - if (callee != NULL && (callee->flags & BFUN_UP_LINKS_TO_TAILCALL) == 0) - bfun = callee->up; + if (callee == NULL || (callee->flags & BFUN_UP_LINKS_TO_TAILCALL) != 0) + return 0; + + if (btrace_find_call_by_number (&it, &tp->btrace, callee->up) == 0) + return 0; + + bfun = btrace_call_get (&it); } if (bfun == NULL) @@ -1743,7 +1814,9 @@ record_btrace_tailcall_frame_sniffer (const struct frame_unwind *self, { const struct btrace_function *bfun, *callee; struct btrace_frame_cache *cache; + struct btrace_call_iterator it; struct frame_info *next; + struct thread_info *tinfo; next = get_next_frame (this_frame); if (next == NULL) @@ -1756,16 +1829,18 @@ record_btrace_tailcall_frame_sniffer (const struct frame_unwind *self, if ((callee->flags & BFUN_UP_LINKS_TO_TAILCALL) == 0) return 0; - bfun = callee->up; - if (bfun == NULL) + tinfo = inferior_thread (); + if (btrace_find_call_by_number (&it, &tinfo->btrace, callee->up) == 0) return 0; + bfun = btrace_call_get (&it); + DEBUG ("[frame] sniffed tailcall frame for %s on level %d", btrace_get_bfun_name (bfun), bfun->level); /* This is our frame. Initialize the frame cache. */ cache = bfcache_new (this_frame); - cache->tp = find_thread_ptid (inferior_ptid); + cache->tp = tinfo; cache->bfun = bfun; *this_cache = cache; @@ -1814,18 +1889,18 @@ const struct frame_unwind record_btrace_tailcall_frame_unwind = record_btrace_frame_dealloc_cache }; -/* Implement the to_get_unwinder method. */ +/* Implement the get_unwinder method. */ -static const struct frame_unwind * -record_btrace_to_get_unwinder (struct target_ops *self) +const struct frame_unwind * +record_btrace_target::get_unwinder () { return &record_btrace_frame_unwind; } -/* Implement the to_get_tailcall_unwinder method. */ +/* Implement the get_tailcall_unwinder method. */ -static const struct frame_unwind * -record_btrace_to_get_tailcall_unwinder (struct target_ops *self) +const struct frame_unwind * +record_btrace_target::get_tailcall_unwinder () { return &record_btrace_tailcall_frame_unwind; } @@ -1864,13 +1939,14 @@ record_btrace_resume_thread (struct thread_info *tp, { struct btrace_thread_info *btinfo; - DEBUG ("resuming thread %d (%s): %x (%s)", tp->num, - target_pid_to_str (tp->ptid), flag, btrace_thread_flag_to_str (flag)); + DEBUG ("resuming thread %s (%s): %x (%s)", print_thread_id (tp), + target_pid_to_str (tp->ptid).c_str (), flag, + btrace_thread_flag_to_str (flag)); btinfo = &tp->btrace; /* Fetch the latest branch trace. */ - btrace_fetch (tp); + btrace_fetch (tp, record_btrace_get_cpu ()); /* A resume request overwrites a preceding resume or stop request. */ btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP); @@ -1879,51 +1955,45 @@ record_btrace_resume_thread (struct thread_info *tp, /* Get the current frame for TP. */ -static struct frame_info * -get_thread_current_frame (struct thread_info *tp) +static struct frame_id +get_thread_current_frame_id (struct thread_info *tp) { - struct frame_info *frame; - ptid_t old_inferior_ptid; + struct frame_id id; int executing; - /* Set INFERIOR_PTID, which is implicitly used by get_current_frame. */ - old_inferior_ptid = inferior_ptid; - inferior_ptid = tp->ptid; + /* Set current thread, which is implicitly used by + get_current_frame. */ + scoped_restore_current_thread restore_thread; + + switch_to_thread (tp); /* Clear the executing flag to allow changes to the current frame. We are not actually running, yet. We just started a reverse execution command or a record goto command. For the latter, EXECUTING is false and this has no effect. - For the former, EXECUTING is true and we're in to_wait, about to + For the former, EXECUTING is true and we're in wait, about to move the thread. Since we need to recompute the stack, we temporarily set EXECUTING to flase. */ - executing = is_executing (inferior_ptid); - set_executing (inferior_ptid, 0); + executing = tp->executing; + set_executing (inferior_ptid, false); - frame = NULL; - TRY + id = null_frame_id; + try { - frame = get_current_frame (); + id = get_frame_id (get_current_frame ()); } - CATCH (except, RETURN_MASK_ALL) + catch (const gdb_exception &except) { /* Restore the previous execution state. */ set_executing (inferior_ptid, executing); - /* Restore the previous inferior_ptid. */ - inferior_ptid = old_inferior_ptid; - - throw_exception (except); + throw; } - END_CATCH /* Restore the previous execution state. */ set_executing (inferior_ptid, executing); - /* Restore the previous inferior_ptid. */ - inferior_ptid = old_inferior_ptid; - - return frame; + return id; } /* Start replaying a thread. */ @@ -1938,7 +2008,7 @@ record_btrace_start_replaying (struct thread_info *tp) replay = NULL; /* We can't start replaying without trace. */ - if (btinfo->begin == NULL) + if (btinfo->functions.empty ()) return NULL; /* GDB stores the current frame_id when stepping in order to detects steps @@ -1946,15 +2016,13 @@ record_btrace_start_replaying (struct thread_info *tp) Since frames are computed differently when we're replaying, we need to recompute those stored frames and fix them up so we can still detect subroutines after we started replaying. */ - TRY + try { - struct frame_info *frame; struct frame_id frame_id; int upd_step_frame_id, upd_step_stack_frame_id; /* The current frame without replaying - computed via normal unwind. */ - frame = get_thread_current_frame (tp); - frame_id = get_frame_id (frame); + frame_id = get_thread_current_frame_id (tp); /* Check if we need to update any stepping-related frame id's. */ upd_step_frame_id = frame_id_eq (frame_id, @@ -1982,11 +2050,10 @@ record_btrace_start_replaying (struct thread_info *tp) btinfo->replay = replay; /* Make sure we're not using any stale registers. */ - registers_changed_ptid (tp->ptid); + registers_changed_thread (tp); /* The current frame with replaying - computed via btrace unwind. */ - frame = get_thread_current_frame (tp); - frame_id = get_frame_id (frame); + frame_id = get_thread_current_frame_id (tp); /* Replace stepping related frames where necessary. */ if (upd_step_frame_id) @@ -1994,16 +2061,15 @@ record_btrace_start_replaying (struct thread_info *tp) if (upd_step_stack_frame_id) tp->control.step_stack_frame_id = frame_id; } - CATCH (except, RETURN_MASK_ALL) + catch (const gdb_exception &except) { xfree (btinfo->replay); btinfo->replay = NULL; - registers_changed_ptid (tp->ptid); + registers_changed_thread (tp); - throw_exception (except); + throw; } - END_CATCH return replay; } @@ -2021,7 +2087,7 @@ record_btrace_stop_replaying (struct thread_info *tp) btinfo->replay = NULL; /* Make sure we're not leaving any stale registers. */ - registers_changed_ptid (tp->ptid); + registers_changed_thread (tp); } /* Stop replaying TP if it is at the end of its execution history. */ @@ -2044,40 +2110,37 @@ record_btrace_stop_replaying_at_end (struct thread_info *tp) record_btrace_stop_replaying (tp); } -/* The to_resume method of target record-btrace. */ +/* The resume method of target record-btrace. */ -static void -record_btrace_resume (struct target_ops *ops, ptid_t ptid, int step, - enum gdb_signal signal) +void +record_btrace_target::resume (ptid_t ptid, int step, enum gdb_signal signal) { - struct thread_info *tp; enum btrace_thread_flag flag, cflag; - DEBUG ("resume %s: %s%s", target_pid_to_str (ptid), - execution_direction == EXEC_REVERSE ? "reverse-" : "", + DEBUG ("resume %s: %s%s", target_pid_to_str (ptid).c_str (), + ::execution_direction == EXEC_REVERSE ? "reverse-" : "", step ? "step" : "cont"); /* Store the execution direction of the last resume. - If there is more than one to_resume call, we have to rely on infrun + If there is more than one resume call, we have to rely on infrun to not change the execution direction in-between. */ - record_btrace_resume_exec_dir = execution_direction; + record_btrace_resume_exec_dir = ::execution_direction; /* As long as we're not replaying, just forward the request. For non-stop targets this means that no thread is replaying. In order to make progress, we may need to explicitly move replaying threads to the end of their execution history. */ - if ((execution_direction != EXEC_REVERSE) - && !record_btrace_is_replaying (ops, minus_one_ptid)) + if ((::execution_direction != EXEC_REVERSE) + && !record_is_replaying (minus_one_ptid)) { - ops = ops->beneath; - ops->to_resume (ops, ptid, step, signal); + this->beneath ()->resume (ptid, step, signal); return; } /* Compute the btrace thread flag for the requested move. */ - if (execution_direction == EXEC_REVERSE) + if (::execution_direction == EXEC_REVERSE) { flag = step == 0 ? BTHR_RCONT : BTHR_RSTEP; cflag = BTHR_RCONT; @@ -2094,22 +2157,20 @@ record_btrace_resume (struct target_ops *ops, ptid_t ptid, int step, For all-stop targets, we only step INFERIOR_PTID and continue others. */ if (!target_is_non_stop_p ()) { - gdb_assert (ptid_match (inferior_ptid, ptid)); + gdb_assert (inferior_ptid.matches (ptid)); - ALL_NON_EXITED_THREADS (tp) - if (ptid_match (tp->ptid, ptid)) - { - if (ptid_match (tp->ptid, inferior_ptid)) - record_btrace_resume_thread (tp, flag); - else - record_btrace_resume_thread (tp, cflag); - } + for (thread_info *tp : all_non_exited_threads (ptid)) + { + if (tp->ptid.matches (inferior_ptid)) + record_btrace_resume_thread (tp, flag); + else + record_btrace_resume_thread (tp, cflag); + } } else { - ALL_NON_EXITED_THREADS (tp) - if (ptid_match (tp->ptid, ptid)) - record_btrace_resume_thread (tp, flag); + for (thread_info *tp : all_non_exited_threads (ptid)) + record_btrace_resume_thread (tp, flag); } /* Async support. */ @@ -2120,6 +2181,16 @@ record_btrace_resume (struct target_ops *ops, ptid_t ptid, int step, } } +/* The commit_resume method of target record-btrace. */ + +void +record_btrace_target::commit_resume () +{ + if ((::execution_direction != EXEC_REVERSE) + && !record_is_replaying (minus_one_ptid)) + beneath ()->commit_resume (); +} + /* Cancel resuming TP. */ static void @@ -2131,8 +2202,9 @@ record_btrace_cancel_resume (struct thread_info *tp) if (flags == 0) return; - DEBUG ("cancel resume thread %d (%s): %x (%s)", tp->num, - target_pid_to_str (tp->ptid), flags, + DEBUG ("cancel resume thread %s (%s): %x (%s)", + print_thread_id (tp), + target_pid_to_str (tp->ptid).c_str (), flags, btrace_thread_flag_to_str (flags)); tp->btrace.flags &= ~(BTHR_MOVE | BTHR_STOP); @@ -2234,7 +2306,6 @@ record_btrace_replay_at_breakpoint (struct thread_info *tp) struct btrace_insn_iterator *replay; struct btrace_thread_info *btinfo; const struct btrace_insn *insn; - struct inferior *inf; btinfo = &tp->btrace; replay = btinfo->replay; @@ -2246,11 +2317,7 @@ record_btrace_replay_at_breakpoint (struct thread_info *tp) if (insn == NULL) return 0; - inf = find_inferior_ptid (tp->ptid); - if (inf == NULL) - return 0; - - return record_check_stopped_by_breakpoint (inf->aspace, insn->pc, + return record_check_stopped_by_breakpoint (tp->inf->aspace, insn->pc, &btinfo->stop_reason); } @@ -2259,7 +2326,7 @@ record_btrace_replay_at_breakpoint (struct thread_info *tp) static struct target_waitstatus record_btrace_single_step_forward (struct thread_info *tp) { - struct btrace_insn_iterator *replay, end; + struct btrace_insn_iterator *replay, end, start; struct btrace_thread_info *btinfo; btinfo = &tp->btrace; @@ -2273,7 +2340,9 @@ record_btrace_single_step_forward (struct thread_info *tp) if (record_btrace_replay_at_breakpoint (tp)) return btrace_step_stopped (); - /* Skip gaps during replay. */ + /* Skip gaps during replay. If we end up at a gap (at the end of the trace), + jump back to the instruction at which we started. */ + start = *replay; do { unsigned int steps; @@ -2282,7 +2351,10 @@ record_btrace_single_step_forward (struct thread_info *tp) of the execution history. */ steps = btrace_insn_next (replay, 1); if (steps == 0) - return btrace_step_no_history (); + { + *replay = start; + return btrace_step_no_history (); + } } while (btrace_insn_get (replay) == NULL); @@ -2303,7 +2375,7 @@ record_btrace_single_step_forward (struct thread_info *tp) static struct target_waitstatus record_btrace_single_step_backward (struct thread_info *tp) { - struct btrace_insn_iterator *replay; + struct btrace_insn_iterator *replay, start; struct btrace_thread_info *btinfo; btinfo = &tp->btrace; @@ -2314,14 +2386,19 @@ record_btrace_single_step_backward (struct thread_info *tp) replay = record_btrace_start_replaying (tp); /* If we can't step any further, we reached the end of the history. - Skip gaps during replay. */ + Skip gaps during replay. If we end up at a gap (at the beginning of + the trace), jump back to the instruction at which we started. */ + start = *replay; do { unsigned int steps; steps = btrace_insn_prev (replay, 1); if (steps == 0) - return btrace_step_no_history (); + { + *replay = start; + return btrace_step_no_history (); + } } while (btrace_insn_get (replay) == NULL); @@ -2354,8 +2431,8 @@ record_btrace_step_thread (struct thread_info *tp) flags = btinfo->flags & (BTHR_MOVE | BTHR_STOP); btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP); - DEBUG ("stepping thread %d (%s): %x (%s)", tp->num, - target_pid_to_str (tp->ptid), flags, + DEBUG ("stepping thread %s (%s): %x (%s)", print_thread_id (tp), + target_pid_to_str (tp->ptid).c_str (), flags, btrace_thread_flag_to_str (flags)); /* We can't step without an execution history. */ @@ -2401,7 +2478,7 @@ record_btrace_step_thread (struct thread_info *tp) return btrace_step_again (); } - /* We keep threads moving at the end of their execution history. The to_wait + /* We keep threads moving at the end of their execution history. The wait method will stop the thread for whom the event is reported. */ if (status.kind == TARGET_WAITKIND_NO_HISTORY) btinfo->flags |= flags; @@ -2409,21 +2486,15 @@ record_btrace_step_thread (struct thread_info *tp) return status; } -/* A vector of threads. */ - -typedef struct thread_info * tp_t; -DEF_VEC_P (tp_t); - /* Announce further events if necessary. */ static void -record_btrace_maybe_mark_async_event (const VEC (tp_t) *moving, - const VEC (tp_t) *no_history) +record_btrace_maybe_mark_async_event + (const std::vector &moving, + const std::vector &no_history) { - int more_moving, more_no_history; - - more_moving = !VEC_empty (tp_t, moving); - more_no_history = !VEC_empty (tp_t, no_history); + bool more_moving = !moving.empty (); + bool more_no_history = !no_history.empty ();; if (!more_moving && !more_no_history) return; @@ -2437,46 +2508,36 @@ record_btrace_maybe_mark_async_event (const VEC (tp_t) *moving, mark_async_event_handler (record_btrace_async_inferior_event_handler); } -/* The to_wait method of target record-btrace. */ +/* The wait method of target record-btrace. */ -static ptid_t -record_btrace_wait (struct target_ops *ops, ptid_t ptid, - struct target_waitstatus *status, int options) +ptid_t +record_btrace_target::wait (ptid_t ptid, struct target_waitstatus *status, + int options) { - VEC (tp_t) *moving, *no_history; - struct thread_info *tp, *eventing; - struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); + std::vector moving; + std::vector no_history; - DEBUG ("wait %s (0x%x)", target_pid_to_str (ptid), options); + DEBUG ("wait %s (0x%x)", target_pid_to_str (ptid).c_str (), options); /* As long as we're not replaying, just forward the request. */ - if ((execution_direction != EXEC_REVERSE) - && !record_btrace_is_replaying (ops, minus_one_ptid)) + if ((::execution_direction != EXEC_REVERSE) + && !record_is_replaying (minus_one_ptid)) { - ops = ops->beneath; - return ops->to_wait (ops, ptid, status, options); + return this->beneath ()->wait (ptid, status, options); } - moving = NULL; - no_history = NULL; - - make_cleanup (VEC_cleanup (tp_t), &moving); - make_cleanup (VEC_cleanup (tp_t), &no_history); - /* Keep a work list of moving threads. */ - ALL_NON_EXITED_THREADS (tp) - if (ptid_match (tp->ptid, ptid) - && ((tp->btrace.flags & (BTHR_MOVE | BTHR_STOP)) != 0)) - VEC_safe_push (tp_t, moving, tp); + for (thread_info *tp : all_non_exited_threads (ptid)) + if ((tp->btrace.flags & (BTHR_MOVE | BTHR_STOP)) != 0) + moving.push_back (tp); - if (VEC_empty (tp_t, moving)) + if (moving.empty ()) { *status = btrace_step_no_resumed (); - DEBUG ("wait ended by %s: %s", target_pid_to_str (null_ptid), - target_waitstatus_to_string (status)); + DEBUG ("wait ended by %s: %s", target_pid_to_str (null_ptid).c_str (), + target_waitstatus_to_string (status).c_str ()); - do_cleanups (cleanups); return null_ptid; } @@ -2497,14 +2558,13 @@ record_btrace_wait (struct target_ops *ops, ptid_t ptid, nothing else to report. By this time, all threads should have moved to either the beginning or the end of their execution history. There will be a single user-visible stop. */ - eventing = NULL; - while ((eventing == NULL) && !VEC_empty (tp_t, moving)) + struct thread_info *eventing = NULL; + while ((eventing == NULL) && !moving.empty ()) { - unsigned int ix; - - ix = 0; - while ((eventing == NULL) && VEC_iterate (tp_t, moving, ix, tp)) + for (unsigned int ix = 0; eventing == NULL && ix < moving.size ();) { + thread_info *tp = moving[ix]; + *status = record_btrace_step_thread (tp); switch (status->kind) @@ -2514,12 +2574,11 @@ record_btrace_wait (struct target_ops *ops, ptid_t ptid, break; case TARGET_WAITKIND_NO_HISTORY: - VEC_safe_push (tp_t, no_history, - VEC_ordered_remove (tp_t, moving, ix)); + no_history.push_back (ordered_remove (moving, ix)); break; default: - eventing = VEC_unordered_remove (tp_t, moving, ix); + eventing = unordered_remove (moving, ix); break; } } @@ -2532,11 +2591,11 @@ record_btrace_wait (struct target_ops *ops, ptid_t ptid, In the former case, EVENTING must not be NULL. In the latter case, NO_HISTORY must not be empty. */ - gdb_assert (!VEC_empty (tp_t, no_history)); + gdb_assert (!no_history.empty ()); /* We kept threads moving at the end of their execution history. Stop EVENTING now that we are going to report its stop. */ - eventing = VEC_unordered_remove (tp_t, no_history, 0); + eventing = unordered_remove (no_history, 0); eventing->btrace.flags &= ~BTHR_MOVE; *status = btrace_step_no_history (); @@ -2550,8 +2609,10 @@ record_btrace_wait (struct target_ops *ops, ptid_t ptid, /* Stop all other threads. */ if (!target_is_non_stop_p ()) - ALL_NON_EXITED_THREADS (tp) - record_btrace_cancel_resume (tp); + { + for (thread_info *tp : all_non_exited_threads ()) + record_btrace_cancel_resume (tp); + } /* In async mode, we need to announce further events. */ if (target_is_async_p ()) @@ -2561,131 +2622,125 @@ record_btrace_wait (struct target_ops *ops, ptid_t ptid, record_btrace_clear_histories (&eventing->btrace); /* We moved the replay position but did not update registers. */ - registers_changed_ptid (eventing->ptid); + registers_changed_thread (eventing); - DEBUG ("wait ended by thread %d (%s): %s", eventing->num, - target_pid_to_str (eventing->ptid), - target_waitstatus_to_string (status)); + DEBUG ("wait ended by thread %s (%s): %s", + print_thread_id (eventing), + target_pid_to_str (eventing->ptid).c_str (), + target_waitstatus_to_string (status).c_str ()); - do_cleanups (cleanups); return eventing->ptid; } -/* The to_stop method of target record-btrace. */ +/* The stop method of target record-btrace. */ -static void -record_btrace_stop (struct target_ops *ops, ptid_t ptid) +void +record_btrace_target::stop (ptid_t ptid) { - DEBUG ("stop %s", target_pid_to_str (ptid)); + DEBUG ("stop %s", target_pid_to_str (ptid).c_str ()); /* As long as we're not replaying, just forward the request. */ - if ((execution_direction != EXEC_REVERSE) - && !record_btrace_is_replaying (ops, minus_one_ptid)) + if ((::execution_direction != EXEC_REVERSE) + && !record_is_replaying (minus_one_ptid)) { - ops = ops->beneath; - ops->to_stop (ops, ptid); + this->beneath ()->stop (ptid); } else { - struct thread_info *tp; - - ALL_NON_EXITED_THREADS (tp) - if (ptid_match (tp->ptid, ptid)) - { - tp->btrace.flags &= ~BTHR_MOVE; - tp->btrace.flags |= BTHR_STOP; - } + for (thread_info *tp : all_non_exited_threads (ptid)) + { + tp->btrace.flags &= ~BTHR_MOVE; + tp->btrace.flags |= BTHR_STOP; + } } } -/* The to_can_execute_reverse method of target record-btrace. */ +/* The can_execute_reverse method of target record-btrace. */ -static int -record_btrace_can_execute_reverse (struct target_ops *self) +bool +record_btrace_target::can_execute_reverse () { - return 1; + return true; } -/* The to_stopped_by_sw_breakpoint method of target record-btrace. */ +/* The stopped_by_sw_breakpoint method of target record-btrace. */ -static int -record_btrace_stopped_by_sw_breakpoint (struct target_ops *ops) +bool +record_btrace_target::stopped_by_sw_breakpoint () { - if (record_btrace_is_replaying (ops, minus_one_ptid)) + if (record_is_replaying (minus_one_ptid)) { struct thread_info *tp = inferior_thread (); return tp->btrace.stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT; } - return ops->beneath->to_stopped_by_sw_breakpoint (ops->beneath); + return this->beneath ()->stopped_by_sw_breakpoint (); } -/* The to_supports_stopped_by_sw_breakpoint method of target +/* The supports_stopped_by_sw_breakpoint method of target record-btrace. */ -static int -record_btrace_supports_stopped_by_sw_breakpoint (struct target_ops *ops) +bool +record_btrace_target::supports_stopped_by_sw_breakpoint () { - if (record_btrace_is_replaying (ops, minus_one_ptid)) - return 1; + if (record_is_replaying (minus_one_ptid)) + return true; - return ops->beneath->to_supports_stopped_by_sw_breakpoint (ops->beneath); + return this->beneath ()->supports_stopped_by_sw_breakpoint (); } -/* The to_stopped_by_sw_breakpoint method of target record-btrace. */ +/* The stopped_by_sw_breakpoint method of target record-btrace. */ -static int -record_btrace_stopped_by_hw_breakpoint (struct target_ops *ops) +bool +record_btrace_target::stopped_by_hw_breakpoint () { - if (record_btrace_is_replaying (ops, minus_one_ptid)) + if (record_is_replaying (minus_one_ptid)) { struct thread_info *tp = inferior_thread (); return tp->btrace.stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT; } - return ops->beneath->to_stopped_by_hw_breakpoint (ops->beneath); + return this->beneath ()->stopped_by_hw_breakpoint (); } -/* The to_supports_stopped_by_hw_breakpoint method of target +/* The supports_stopped_by_hw_breakpoint method of target record-btrace. */ -static int -record_btrace_supports_stopped_by_hw_breakpoint (struct target_ops *ops) +bool +record_btrace_target::supports_stopped_by_hw_breakpoint () { - if (record_btrace_is_replaying (ops, minus_one_ptid)) - return 1; + if (record_is_replaying (minus_one_ptid)) + return true; - return ops->beneath->to_supports_stopped_by_hw_breakpoint (ops->beneath); + return this->beneath ()->supports_stopped_by_hw_breakpoint (); } -/* The to_update_thread_list method of target record-btrace. */ +/* The update_thread_list method of target record-btrace. */ -static void -record_btrace_update_thread_list (struct target_ops *ops) +void +record_btrace_target::update_thread_list () { /* We don't add or remove threads during replay. */ - if (record_btrace_is_replaying (ops, minus_one_ptid)) + if (record_is_replaying (minus_one_ptid)) return; /* Forward the request. */ - ops = ops->beneath; - ops->to_update_thread_list (ops); + this->beneath ()->update_thread_list (); } -/* The to_thread_alive method of target record-btrace. */ +/* The thread_alive method of target record-btrace. */ -static int -record_btrace_thread_alive (struct target_ops *ops, ptid_t ptid) +bool +record_btrace_target::thread_alive (ptid_t ptid) { /* We don't add or remove threads during replay. */ - if (record_btrace_is_replaying (ops, minus_one_ptid)) - return find_thread_ptid (ptid) != NULL; + if (record_is_replaying (minus_one_ptid)) + return true; /* Forward the request. */ - ops = ops->beneath; - return ops->to_thread_alive (ops, ptid); + return this->beneath ()->thread_alive (ptid); } /* Set the replay branch trace instruction iterator. If IT is NULL, replay @@ -2699,7 +2754,7 @@ record_btrace_set_replay (struct thread_info *tp, btinfo = &tp->btrace; - if (it == NULL || it->function == NULL) + if (it == NULL) record_btrace_stop_replaying (tp); else { @@ -2709,20 +2764,21 @@ record_btrace_set_replay (struct thread_info *tp, return; *btinfo->replay = *it; - registers_changed_ptid (tp->ptid); + registers_changed_thread (tp); } /* Start anew from the new replay position. */ record_btrace_clear_histories (btinfo); - stop_pc = regcache_read_pc (get_current_regcache ()); + inferior_thread ()->suspend.stop_pc + = regcache_read_pc (get_current_regcache ()); print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); } -/* The to_goto_record_begin method of target record-btrace. */ +/* The goto_record_begin method of target record-btrace. */ -static void -record_btrace_goto_begin (struct target_ops *self) +void +record_btrace_target::goto_record_begin () { struct thread_info *tp; struct btrace_insn_iterator begin; @@ -2730,13 +2786,24 @@ record_btrace_goto_begin (struct target_ops *self) tp = require_btrace_thread (); btrace_insn_begin (&begin, &tp->btrace); + + /* Skip gaps at the beginning of the trace. */ + while (btrace_insn_get (&begin) == NULL) + { + unsigned int steps; + + steps = btrace_insn_next (&begin, 1); + if (steps == 0) + error (_("No trace.")); + } + record_btrace_set_replay (tp, &begin); } -/* The to_goto_record_end method of target record-btrace. */ +/* The goto_record_end method of target record-btrace. */ -static void -record_btrace_goto_end (struct target_ops *ops) +void +record_btrace_target::goto_record_end () { struct thread_info *tp; @@ -2745,10 +2812,10 @@ record_btrace_goto_end (struct target_ops *ops) record_btrace_set_replay (tp, NULL); } -/* The to_goto_record method of target record-btrace. */ +/* The goto_record method of target record-btrace. */ -static void -record_btrace_goto (struct target_ops *self, ULONGEST insn) +void +record_btrace_target::goto_record (ULONGEST insn) { struct thread_info *tp; struct btrace_insn_iterator it; @@ -2764,194 +2831,134 @@ record_btrace_goto (struct target_ops *self, ULONGEST insn) tp = require_btrace_thread (); found = btrace_find_insn_by_number (&it, &tp->btrace, number); - if (found == 0) + + /* Check if the instruction could not be found or is a gap. */ + if (found == 0 || btrace_insn_get (&it) == NULL) error (_("No such instruction.")); record_btrace_set_replay (tp, &it); } -/* The to_record_stop_replaying method of target record-btrace. */ +/* The record_stop_replaying method of target record-btrace. */ -static void -record_btrace_stop_replaying_all (struct target_ops *self) +void +record_btrace_target::record_stop_replaying () { - struct thread_info *tp; - - ALL_NON_EXITED_THREADS (tp) + for (thread_info *tp : all_non_exited_threads ()) record_btrace_stop_replaying (tp); } -/* The to_execution_direction target method. */ +/* The execution_direction target method. */ -static enum exec_direction_kind -record_btrace_execution_direction (struct target_ops *self) +enum exec_direction_kind +record_btrace_target::execution_direction () { return record_btrace_resume_exec_dir; } -/* The to_prepare_to_generate_core target method. */ +/* The prepare_to_generate_core target method. */ -static void -record_btrace_prepare_to_generate_core (struct target_ops *self) +void +record_btrace_target::prepare_to_generate_core () { record_btrace_generating_corefile = 1; } -/* The to_done_generating_core target method. */ +/* The done_generating_core target method. */ -static void -record_btrace_done_generating_core (struct target_ops *self) +void +record_btrace_target::done_generating_core () { record_btrace_generating_corefile = 0; } -/* Initialize the record-btrace target ops. */ - -static void -init_record_btrace_ops (void) -{ - struct target_ops *ops; - - ops = &record_btrace_ops; - ops->to_shortname = "record-btrace"; - ops->to_longname = "Branch tracing target"; - ops->to_doc = "Collect control-flow trace and provide the execution history."; - ops->to_open = record_btrace_open; - ops->to_close = record_btrace_close; - ops->to_async = record_btrace_async; - ops->to_detach = record_detach; - ops->to_disconnect = record_disconnect; - ops->to_mourn_inferior = record_mourn_inferior; - ops->to_kill = record_kill; - ops->to_stop_recording = record_btrace_stop_recording; - ops->to_info_record = record_btrace_info; - ops->to_insn_history = record_btrace_insn_history; - ops->to_insn_history_from = record_btrace_insn_history_from; - ops->to_insn_history_range = record_btrace_insn_history_range; - ops->to_call_history = record_btrace_call_history; - ops->to_call_history_from = record_btrace_call_history_from; - ops->to_call_history_range = record_btrace_call_history_range; - ops->to_record_is_replaying = record_btrace_is_replaying; - ops->to_record_will_replay = record_btrace_will_replay; - ops->to_record_stop_replaying = record_btrace_stop_replaying_all; - ops->to_xfer_partial = record_btrace_xfer_partial; - ops->to_remove_breakpoint = record_btrace_remove_breakpoint; - ops->to_insert_breakpoint = record_btrace_insert_breakpoint; - ops->to_fetch_registers = record_btrace_fetch_registers; - ops->to_store_registers = record_btrace_store_registers; - ops->to_prepare_to_store = record_btrace_prepare_to_store; - ops->to_get_unwinder = &record_btrace_to_get_unwinder; - ops->to_get_tailcall_unwinder = &record_btrace_to_get_tailcall_unwinder; - ops->to_resume = record_btrace_resume; - ops->to_wait = record_btrace_wait; - ops->to_stop = record_btrace_stop; - ops->to_update_thread_list = record_btrace_update_thread_list; - ops->to_thread_alive = record_btrace_thread_alive; - ops->to_goto_record_begin = record_btrace_goto_begin; - ops->to_goto_record_end = record_btrace_goto_end; - ops->to_goto_record = record_btrace_goto; - ops->to_can_execute_reverse = record_btrace_can_execute_reverse; - ops->to_stopped_by_sw_breakpoint = record_btrace_stopped_by_sw_breakpoint; - ops->to_supports_stopped_by_sw_breakpoint - = record_btrace_supports_stopped_by_sw_breakpoint; - ops->to_stopped_by_hw_breakpoint = record_btrace_stopped_by_hw_breakpoint; - ops->to_supports_stopped_by_hw_breakpoint - = record_btrace_supports_stopped_by_hw_breakpoint; - ops->to_execution_direction = record_btrace_execution_direction; - ops->to_prepare_to_generate_core = record_btrace_prepare_to_generate_core; - ops->to_done_generating_core = record_btrace_done_generating_core; - ops->to_stratum = record_stratum; - ops->to_magic = OPS_MAGIC; -} - /* Start recording in BTS format. */ static void -cmd_record_btrace_bts_start (char *args, int from_tty) +cmd_record_btrace_bts_start (const char *args, int from_tty) { if (args != NULL && *args != 0) error (_("Invalid argument.")); record_btrace_conf.format = BTRACE_FORMAT_BTS; - TRY + try { execute_command ("target record-btrace", from_tty); } - CATCH (exception, RETURN_MASK_ALL) + catch (const gdb_exception &exception) { record_btrace_conf.format = BTRACE_FORMAT_NONE; - throw_exception (exception); + throw; } - END_CATCH } -/* Start recording Intel(R) Processor Trace. */ +/* Start recording in Intel Processor Trace format. */ static void -cmd_record_btrace_pt_start (char *args, int from_tty) +cmd_record_btrace_pt_start (const char *args, int from_tty) { if (args != NULL && *args != 0) error (_("Invalid argument.")); record_btrace_conf.format = BTRACE_FORMAT_PT; - TRY + try { execute_command ("target record-btrace", from_tty); } - CATCH (exception, RETURN_MASK_ALL) + catch (const gdb_exception &exception) { record_btrace_conf.format = BTRACE_FORMAT_NONE; - throw_exception (exception); + throw; } - END_CATCH } /* Alias for "target record". */ static void -cmd_record_btrace_start (char *args, int from_tty) +cmd_record_btrace_start (const char *args, int from_tty) { if (args != NULL && *args != 0) error (_("Invalid argument.")); record_btrace_conf.format = BTRACE_FORMAT_PT; - TRY + try { execute_command ("target record-btrace", from_tty); } - CATCH (exception, RETURN_MASK_ALL) + catch (const gdb_exception &exception) { record_btrace_conf.format = BTRACE_FORMAT_BTS; - TRY + try { execute_command ("target record-btrace", from_tty); } - CATCH (exception, RETURN_MASK_ALL) + catch (const gdb_exception &ex) { record_btrace_conf.format = BTRACE_FORMAT_NONE; - throw_exception (exception); + throw; } - END_CATCH } - END_CATCH } /* The "set record btrace" command. */ static void -cmd_set_record_btrace (char *args, int from_tty) +cmd_set_record_btrace (const char *args, int from_tty) { - cmd_show_list (set_record_btrace_cmdlist, from_tty, ""); + printf_unfiltered (_("\"set record btrace\" must be followed " + "by an appropriate subcommand.\n")); + help_list (set_record_btrace_cmdlist, "set record btrace ", + all_commands, gdb_stdout); } /* The "show record btrace" command. */ static void -cmd_show_record_btrace (char *args, int from_tty) +cmd_show_record_btrace (const char *args, int from_tty) { cmd_show_list (show_record_btrace_cmdlist, from_tty, ""); } @@ -2966,10 +2973,114 @@ cmd_show_replay_memory_access (struct ui_file *file, int from_tty, replay_memory_access); } -/* The "set record btrace bts" command. */ +/* The "set record btrace cpu none" command. */ + +static void +cmd_set_record_btrace_cpu_none (const char *args, int from_tty) +{ + if (args != nullptr && *args != 0) + error (_("Trailing junk: '%s'."), args); + + record_btrace_cpu_state = CS_NONE; +} + +/* The "set record btrace cpu auto" command. */ static void -cmd_set_record_btrace_bts (char *args, int from_tty) +cmd_set_record_btrace_cpu_auto (const char *args, int from_tty) +{ + if (args != nullptr && *args != 0) + error (_("Trailing junk: '%s'."), args); + + record_btrace_cpu_state = CS_AUTO; +} + +/* The "set record btrace cpu" command. */ + +static void +cmd_set_record_btrace_cpu (const char *args, int from_tty) +{ + if (args == nullptr) + args = ""; + + /* We use a hard-coded vendor string for now. */ + unsigned int family, model, stepping; + int l1, l2, matches = sscanf (args, "intel: %u/%u%n/%u%n", &family, + &model, &l1, &stepping, &l2); + if (matches == 3) + { + if (strlen (args) != l2) + error (_("Trailing junk: '%s'."), args + l2); + } + else if (matches == 2) + { + if (strlen (args) != l1) + error (_("Trailing junk: '%s'."), args + l1); + + stepping = 0; + } + else + error (_("Bad format. See \"help set record btrace cpu\".")); + + if (USHRT_MAX < family) + error (_("Cpu family too big.")); + + if (UCHAR_MAX < model) + error (_("Cpu model too big.")); + + if (UCHAR_MAX < stepping) + error (_("Cpu stepping too big.")); + + record_btrace_cpu.vendor = CV_INTEL; + record_btrace_cpu.family = family; + record_btrace_cpu.model = model; + record_btrace_cpu.stepping = stepping; + + record_btrace_cpu_state = CS_CPU; +} + +/* The "show record btrace cpu" command. */ + +static void +cmd_show_record_btrace_cpu (const char *args, int from_tty) +{ + if (args != nullptr && *args != 0) + error (_("Trailing junk: '%s'."), args); + + switch (record_btrace_cpu_state) + { + case CS_AUTO: + printf_unfiltered (_("btrace cpu is 'auto'.\n")); + return; + + case CS_NONE: + printf_unfiltered (_("btrace cpu is 'none'.\n")); + return; + + case CS_CPU: + switch (record_btrace_cpu.vendor) + { + case CV_INTEL: + if (record_btrace_cpu.stepping == 0) + printf_unfiltered (_("btrace cpu is 'intel: %u/%u'.\n"), + record_btrace_cpu.family, + record_btrace_cpu.model); + else + printf_unfiltered (_("btrace cpu is 'intel: %u/%u/%u'.\n"), + record_btrace_cpu.family, + record_btrace_cpu.model, + record_btrace_cpu.stepping); + return; + } + } + + error (_("Internal error: bad cpu state.")); +} + +/* The "s record btrace bts" command. */ + +static void +cmd_set_record_btrace_bts (const char *args, int from_tty) { printf_unfiltered (_("\"set record btrace bts\" must be followed " "by an appropriate subcommand.\n")); @@ -2980,7 +3091,7 @@ cmd_set_record_btrace_bts (char *args, int from_tty) /* The "show record btrace bts" command. */ static void -cmd_show_record_btrace_bts (char *args, int from_tty) +cmd_show_record_btrace_bts (const char *args, int from_tty) { cmd_show_list (show_record_btrace_bts_cmdlist, from_tty, ""); } @@ -2988,7 +3099,7 @@ cmd_show_record_btrace_bts (char *args, int from_tty) /* The "set record btrace pt" command. */ static void -cmd_set_record_btrace_pt (char *args, int from_tty) +cmd_set_record_btrace_pt (const char *args, int from_tty) { printf_unfiltered (_("\"set record btrace pt\" must be followed " "by an appropriate subcommand.\n")); @@ -2999,7 +3110,7 @@ cmd_set_record_btrace_pt (char *args, int from_tty) /* The "show record btrace pt" command. */ static void -cmd_show_record_btrace_pt (char *args, int from_tty) +cmd_show_record_btrace_pt (const char *args, int from_tty) { cmd_show_list (show_record_btrace_pt_cmdlist, from_tty, ""); } @@ -3026,8 +3137,6 @@ show_record_pt_buffer_size_value (struct ui_file *file, int from_tty, value); } -void _initialize_record_btrace (void); - /* Initialize btrace commands. */ void @@ -3048,17 +3157,17 @@ This format may not be available on all processors."), add_cmd ("pt", class_obscure, cmd_record_btrace_pt_start, _("\ -Start branch trace recording in Intel(R) Processor Trace format.\n\n\ +Start branch trace recording in Intel Processor Trace format.\n\n\ This format may not be available on all processors."), &record_btrace_cmdlist); add_alias_cmd ("pt", "btrace pt", class_obscure, 1, &record_cmdlist); add_prefix_cmd ("btrace", class_support, cmd_set_record_btrace, - _("Set record options"), &set_record_btrace_cmdlist, + _("Set record options."), &set_record_btrace_cmdlist, "set record btrace ", 0, &set_record_cmdlist); add_prefix_cmd ("btrace", class_support, cmd_show_record_btrace, - _("Show record options"), &show_record_btrace_cmdlist, + _("Show record options."), &show_record_btrace_cmdlist, "show record btrace ", 0, &show_record_cmdlist); add_setshow_enum_cmd ("replay-memory-access", no_class, @@ -3076,13 +3185,39 @@ replay."), &set_record_btrace_cmdlist, &show_record_btrace_cmdlist); + add_prefix_cmd ("cpu", class_support, cmd_set_record_btrace_cpu, + _("\ +Set the cpu to be used for trace decode.\n\n\ +The format is \"VENDOR:IDENTIFIER\" or \"none\" or \"auto\" (default).\n\ +For vendor \"intel\" the format is \"FAMILY/MODEL[/STEPPING]\".\n\n\ +When decoding branch trace, enable errata workarounds for the specified cpu.\n\ +The default is \"auto\", which uses the cpu on which the trace was recorded.\n\ +When GDB does not support that cpu, this option can be used to enable\n\ +workarounds for a similar cpu that GDB supports.\n\n\ +When set to \"none\", errata workarounds are disabled."), + &set_record_btrace_cpu_cmdlist, + "set record btrace cpu ", 1, + &set_record_btrace_cmdlist); + + add_cmd ("auto", class_support, cmd_set_record_btrace_cpu_auto, _("\ +Automatically determine the cpu to be used for trace decode."), + &set_record_btrace_cpu_cmdlist); + + add_cmd ("none", class_support, cmd_set_record_btrace_cpu_none, _("\ +Do not enable errata workarounds for trace decode."), + &set_record_btrace_cpu_cmdlist); + + add_cmd ("cpu", class_support, cmd_show_record_btrace_cpu, _("\ +Show the cpu to be used for trace decode."), + &show_record_btrace_cmdlist); + add_prefix_cmd ("bts", class_support, cmd_set_record_btrace_bts, - _("Set record btrace bts options"), + _("Set record btrace bts options."), &set_record_btrace_bts_cmdlist, "set record btrace bts ", 0, &set_record_btrace_cmdlist); add_prefix_cmd ("bts", class_support, cmd_show_record_btrace_bts, - _("Show record btrace bts options"), + _("Show record btrace bts options."), &show_record_btrace_bts_cmdlist, "show record btrace bts ", 0, &show_record_btrace_cmdlist); @@ -3101,12 +3236,12 @@ The trace buffer size may not be changed while recording."), NULL, &show_record_btrace_bts_cmdlist); add_prefix_cmd ("pt", class_support, cmd_set_record_btrace_pt, - _("Set record btrace pt options"), + _("Set record btrace pt options."), &set_record_btrace_pt_cmdlist, "set record btrace pt ", 0, &set_record_btrace_cmdlist); add_prefix_cmd ("pt", class_support, cmd_show_record_btrace_pt, - _("Show record btrace pt options"), + _("Show record btrace pt options."), &show_record_btrace_pt_cmdlist, "show record btrace pt ", 0, &show_record_btrace_cmdlist); @@ -3121,8 +3256,7 @@ to see the actual buffer size."), NULL, show_record_pt_buffer_size_value, &set_record_btrace_pt_cmdlist, &show_record_btrace_pt_cmdlist); - init_record_btrace_ops (); - add_target (&record_btrace_ops); + add_target (record_btrace_target_info, record_btrace_target_open); bfcache = htab_create_alloc (50, bfcache_hash, bfcache_eq, NULL, xcalloc, xfree);