/* Branch trace support for GDB, the GNU debugger.
- Copyright (C) 2013-2018 Free Software Foundation, Inc.
+ Copyright (C) 2013-2020 Free Software Foundation, Inc.
Contributed by Intel Corp. <markus.t.metzger@intel.com>
#include "infrun.h"
#include "event-loop.h"
#include "inf-loop.h"
-#include "vec.h"
#include "inferior.h"
#include <algorithm>
+#include "gdbarch.h"
+#include "cli/cli-style.h"
static const target_info record_btrace_target_info = {
"record-btrace",
class record_btrace_target final : public target_ops
{
public:
- record_btrace_target ()
- { to_stratum = record_stratum; }
-
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;
/* Token associated with a new-thread observer enabling branch tracing
for the new thread. */
-static const gdb::observers::token record_btrace_thread_observer_token;
+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";
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
}
/* Enable automatic tracing of new threads. */
/* 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;
- struct thread_info *tp;
DEBUG ("open");
if (!target_has_execution)
error (_("The program is not being run."));
- ALL_NON_EXITED_THREADS (tp)
+ 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);
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);
}
void
record_btrace_target::close ()
{
- struct thread_info *tp;
-
if (record_btrace_async_inferior_event_handler != NULL)
delete_async_event_handler (&record_btrace_async_inferior_event_handler);
/* 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);
}
printf_unfiltered (_("Recorded %u instructions in %u functions (%u gaps) "
"for thread %s (%s).\n"), insns, calls, gaps,
- print_thread_id (tp), target_pid_to_str (tp->ptid));
+ 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"),
if (!(format == BTRACE_FORMAT_PT && errcode > 0))
{
uiout->text (_("decode error ("));
- uiout->field_int ("errcode", errcode);
+ uiout->field_signed ("errcode", errcode);
uiout->text (_("): "));
}
uiout->text (errstr);
uiout->text (_("]\n"));
}
-/* Print an unsigned int. */
-
-static void
-ui_out_field_uint (struct ui_out *uiout, const char *fld, unsigned int val)
-{
- uiout->field_fmt (fld, "%u", val);
-}
-
/* A range of source lines. */
struct btrace_line_range
gdb::optional<ui_out_emit_tuple> src_and_asm_tuple;
gdb::optional<ui_out_emit_list> asm_list;
- gdb_pretty_print_disassembler disasm (gdbarch);
+ gdb_pretty_print_disassembler disasm (gdbarch, uiout);
for (btrace_insn_iterator it = *begin; btrace_insn_cmp (&it, end) != 0;
btrace_insn_next (&it, 1))
if ((insn->flags & BTRACE_INSN_FLAG_SPECULATIVE) != 0)
dinsn.is_speculative = 1;
- disasm.pretty_print_insn (uiout, &dinsn, flags);
+ disasm.pretty_print_insn (&dinsn, flags);
}
}
}
begin = bfun->insn_offset;
end = begin + size - 1;
- ui_out_field_uint (uiout, "insn begin", begin);
+ uiout->field_unsigned ("insn begin", begin);
uiout->text (",");
- ui_out_field_uint (uiout, "insn end", end);
+ uiout->field_unsigned ("insn end", end);
}
/* Compute the lowest and highest source line for the instructions in BFUN
return;
uiout->field_string ("file",
- symtab_to_filename_for_display (symbol_symtab (sym)));
+ symtab_to_filename_for_display (symbol_symtab (sym)),
+ file_name_style.style ());
btrace_compute_src_line_range (bfun, &begin, &end);
if (end < begin)
return;
uiout->text (":");
- uiout->field_int ("min line", begin);
+ uiout->field_signed ("min line", begin);
if (end == begin)
return;
uiout->text (",");
- uiout->field_int ("max line", end);
+ uiout->field_signed ("max line", end);
}
/* Get the name of a branch trace function. */
sym = bfun->sym;
if (sym != NULL)
- return SYMBOL_PRINT_NAME (sym);
+ return sym->print_name ();
else if (msym != NULL)
- return MSYMBOL_PRINT_NAME (msym);
+ return msym->print_name ();
else
return "??";
}
msym = bfun->msym;
/* Print the function index. */
- ui_out_field_uint (uiout, "index", bfun->number);
+ uiout->field_unsigned ("index", bfun->number);
uiout->text ("\t");
/* Indicate gaps in the trace. */
}
if (sym != NULL)
- uiout->field_string ("function", SYMBOL_PRINT_NAME (sym));
+ uiout->field_string ("function", sym->print_name (),
+ function_name_style.style ());
else if (msym != NULL)
- uiout->field_string ("function", MSYMBOL_PRINT_NAME (msym));
+ uiout->field_string ("function", msym->print_name (),
+ function_name_style.style ());
else if (!uiout->is_mi_like_p ())
- uiout->field_string ("function", "??");
+ uiout->field_string ("function", "??",
+ function_name_style.style ());
if ((flags & RECORD_PRINT_INSN_RANGE) != 0)
{
bool
record_btrace_target::record_is_replaying (ptid_t ptid)
{
- struct thread_info *tp;
-
- ALL_NON_EXITED_THREADS (tp)
- if (tp->ptid.matches (ptid) && btrace_is_replaying (tp))
+ for (thread_info *tp : all_non_exited_threads (ptid))
+ if (btrace_is_replaying (tp))
return true;
return false;
if (section != NULL)
{
/* Check if the section we found is readonly. */
- if ((bfd_get_section_flags (section->the_bfd_section->owner,
- section->the_bfd_section)
+ if ((bfd_section_flags (section->the_bfd_section)
& SEC_READONLY) != 0)
{
/* Truncate the request to fit into this section. */
replay_memory_access = replay_memory_access_read_write;
ret = 0;
- TRY
+ try
{
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;
replay_memory_access = replay_memory_access_read_write;
ret = 0;
- TRY
+ try
{
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;
&& record_is_replaying (regcache->ptid ()))
error (_("Cannot write registers while replaying."));
- gdb_assert (may_write_registers != 0);
+ gdb_assert (may_write_registers);
this->beneath ()->store_registers (regcache, regno);
}
}
/* btrace recording does not store previous memory content, neither the stack
- frames content. Any unwinding would return errorneous results as the stack
+ frames content. Any unwinding would return erroneous results as the stack
contents no longer matches the changed PC value restored from history.
Therefore this unwinder reports any possibly unwound registers as
<unavailable>. */
struct btrace_thread_info *btinfo;
DEBUG ("resuming thread %s (%s): %x (%s)", print_thread_id (tp),
- target_pid_to_str (tp->ptid), flag, btrace_thread_flag_to_str (flag));
+ target_pid_to_str (tp->ptid).c_str (), flag,
+ btrace_thread_flag_to_str (flag));
btinfo = &tp->btrace;
/* 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 current thread, which is implicitly used by
For the latter, EXECUTING is false and this has no effect.
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. */
+ set EXECUTING to false. */
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);
- throw_exception (except);
+ throw;
}
- END_CATCH
/* Restore the previous execution state. */
set_executing (inferior_ptid, executing);
- return frame;
+ return id;
}
/* Start replaying a thread. */
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,
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)
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_thread (tp);
- throw_exception (except);
+ throw;
}
- END_CATCH
return replay;
}
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),
+ DEBUG ("resume %s: %s%s", target_pid_to_str (ptid).c_str (),
::execution_direction == EXEC_REVERSE ? "reverse-" : "",
step ? "step" : "cont");
{
gdb_assert (inferior_ptid.matches (ptid));
- ALL_NON_EXITED_THREADS (tp)
- if (tp->ptid.matches (ptid))
- {
- if (tp->ptid.matches (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 (tp->ptid.matches (ptid))
- record_btrace_resume_thread (tp, flag);
+ for (thread_info *tp : all_non_exited_threads (ptid))
+ record_btrace_resume_thread (tp, flag);
}
/* Async support. */
DEBUG ("cancel resume thread %s (%s): %x (%s)",
print_thread_id (tp),
- target_pid_to_str (tp->ptid), flags,
+ target_pid_to_str (tp->ptid).c_str (), flags,
btrace_thread_flag_to_str (flags));
tp->btrace.flags &= ~(BTHR_MOVE | BTHR_STOP);
btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP);
DEBUG ("stepping thread %s (%s): %x (%s)", print_thread_id (tp),
- target_pid_to_str (tp->ptid), flags,
+ target_pid_to_str (tp->ptid).c_str (), flags,
btrace_thread_flag_to_str (flags));
/* We can't step without an execution history. */
std::vector<thread_info *> moving;
std::vector<thread_info *> 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)
}
/* Keep a work list of moving threads. */
- {
- thread_info *tp;
-
- ALL_NON_EXITED_THREADS (tp)
- {
- if (tp->ptid.matches (ptid)
- && ((tp->btrace.flags & (BTHR_MOVE | BTHR_STOP)) != 0))
- moving.push_back (tp);
- }
- }
+ for (thread_info *tp : all_non_exited_threads (ptid))
+ if ((tp->btrace.flags & (BTHR_MOVE | BTHR_STOP)) != 0)
+ moving.push_back (tp);
if (moving.empty ())
{
*status = btrace_step_no_resumed ();
- DEBUG ("wait ended by %s: %s", target_pid_to_str (null_ptid),
+ DEBUG ("wait ended by %s: %s", target_pid_to_str (null_ptid).c_str (),
target_waitstatus_to_string (status).c_str ());
return null_ptid;
/* Stop all other threads. */
if (!target_is_non_stop_p ())
{
- thread_info *tp;
-
- ALL_NON_EXITED_THREADS (tp)
+ for (thread_info *tp : all_non_exited_threads ())
record_btrace_cancel_resume (tp);
}
DEBUG ("wait ended by thread %s (%s): %s",
print_thread_id (eventing),
- target_pid_to_str (eventing->ptid),
+ target_pid_to_str (eventing->ptid).c_str (),
target_waitstatus_to_string (status).c_str ());
return eventing->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)
}
else
{
- struct thread_info *tp;
-
- ALL_NON_EXITED_THREADS (tp)
- if (tp->ptid.matches (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;
+ }
}
}
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);
}
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 in Intel Processor Trace format. */
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". */
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. */
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,
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 cpu ", 1,
&set_record_btrace_cmdlist);
add_cmd ("auto", class_support, cmd_set_record_btrace_cpu_auto, _("\
&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);
&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);
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