/* Branch trace support for GDB, the GNU debugger.
- Copyright (C) 2013-2015 Free Software Foundation, Inc.
+ Copyright (C) 2013-2017 Free Software Foundation, Inc.
Contributed by Intel Corp. <markus.t.metzger@intel.com>
#include "defs.h"
#include "record.h"
+#include "record-btrace.h"
#include "gdbthread.h"
#include "target.h"
#include "gdbcmd.h"
#include "event-loop.h"
#include "inf-loop.h"
#include "vec.h"
+#include <algorithm>
/* The target_ops of record-btrace. */
static struct target_ops record_btrace_ops;
if (tp == NULL)
error (_("No thread."));
+ validate_registers_access ();
+
btrace_fetch (tp);
if (btrace_is_empty (tp))
static void
record_btrace_disable_callback (void *arg)
{
- struct thread_info *tp;
-
- tp = arg;
+ struct thread_info *tp = (struct thread_info *) arg;
btrace_disable (tp);
}
inferior_event_handler (INF_REG_EVENT, NULL);
}
+/* 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);
+ observer_notify_record_changed (current_inferior (), 1, "btrace", format);
+}
+
/* The to_open method of target record-btrace. */
static void
disable_chain = make_cleanup (null_cleanup, NULL);
ALL_NON_EXITED_THREADS (tp)
- if (args == NULL || *args == 0 || number_is_in_list (args, tp->num))
+ 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);
}
- 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;
-
- observer_notify_record_changed (current_inferior (), 1);
+ record_btrace_push_target ();
discard_cleanups (disable_chain);
}
btrace_disable (tp);
}
+/* The to_disconnect method of target record-btrace. */
+
+static void
+record_btrace_disconnect (struct target_ops *self, const char *args,
+ int from_tty)
+{
+ struct target_ops *beneath = self->beneath;
+
+ /* Do not stop recording, just clean up GDB side. */
+ unpush_target (self);
+
+ /* Forward disconnect. */
+ beneath->to_disconnect (beneath, args, from_tty);
+}
+
/* The to_close method of target record-btrace. */
static void
}
}
-/* 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)
if (tp == NULL)
error (_("No thread."));
+ validate_registers_access ();
+
btinfo = &tp->btrace;
conf = btrace_conf (btinfo);
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));
if (btrace_is_replaying (tp))
printf_unfiltered (_("Replay in progress. At instruction %u.\n"),
btrace_ui_out_decode_error (struct ui_out *uiout, int errcode,
enum btrace_format format)
{
- const char *errstr;
- int is_error;
+ const char *errstr = btrace_decode_error (format, errcode);
- errstr = _("unknown");
- is_error = 1;
-
- switch (format)
+ uiout->text (_("["));
+ /* ERRCODE > 0 indicates notifications on BTRACE_FORMAT_PT. */
+ if (!(format == BTRACE_FORMAT_PT && errcode > 0))
{
- default:
- break;
+ uiout->text (_("decode error ("));
+ uiout->field_int ("errcode", errcode);
+ uiout->text (_("): "));
+ }
+ uiout->text (errstr);
+ uiout->text (_("]\n"));
+}
- case BTRACE_FORMAT_BTS:
- switch (errcode)
- {
- default:
- break;
+/* Print an unsigned int. */
- case BDE_BTS_OVERFLOW:
- errstr = _("instruction overflow");
- break;
+static void
+ui_out_field_uint (struct ui_out *uiout, const char *fld, unsigned int val)
+{
+ uiout->field_fmt (fld, "%u", val);
+}
- case BDE_BTS_INSN_SIZE:
- errstr = _("unknown instruction");
- break;
- }
- break;
+/* A range of source lines. */
-#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) */
+struct btrace_line_range
+{
+ /* The symtab this line is from. */
+ struct symtab *symtab;
+
+ /* The first line (inclusive). */
+ int begin;
+
+ /* The last line (exclusive). */
+ int end;
+};
+
+/* Construct a line range. */
+
+static struct btrace_line_range
+btrace_mk_line_range (struct symtab *symtab, int begin, int end)
+{
+ struct btrace_line_range range;
+
+ range.symtab = symtab;
+ range.begin = begin;
+ range.end = end;
+
+ return range;
+}
+
+/* Add a line to a line range. */
+
+static struct btrace_line_range
+btrace_line_range_add (struct btrace_line_range range, int line)
+{
+ if (range.end <= range.begin)
+ {
+ /* This is the first entry. */
+ range.begin = line;
+ range.end = line + 1;
}
+ else if (line < range.begin)
+ range.begin = line;
+ else if (range.end < line)
+ range.end = line;
+
+ return range;
+}
+
+/* Return non-zero if RANGE is empty, zero otherwise. */
+
+static int
+btrace_line_range_is_empty (struct btrace_line_range range)
+{
+ return range.end <= range.begin;
+}
+
+/* Return non-zero if LHS contains RHS, zero otherwise. */
- ui_out_text (uiout, _("["));
- if (is_error)
+static int
+btrace_line_range_contains_range (struct btrace_line_range lhs,
+ struct btrace_line_range rhs)
+{
+ return ((lhs.symtab == rhs.symtab)
+ && (lhs.begin <= rhs.begin)
+ && (rhs.end <= lhs.end));
+}
+
+/* Find the line range associated with PC. */
+
+static struct btrace_line_range
+btrace_find_line_range (CORE_ADDR pc)
+{
+ struct btrace_line_range range;
+ struct linetable_entry *lines;
+ struct linetable *ltable;
+ struct symtab *symtab;
+ int nlines, i;
+
+ symtab = find_pc_line_symtab (pc);
+ if (symtab == NULL)
+ return btrace_mk_line_range (NULL, 0, 0);
+
+ ltable = SYMTAB_LINETABLE (symtab);
+ if (ltable == NULL)
+ return btrace_mk_line_range (symtab, 0, 0);
+
+ nlines = ltable->nitems;
+ lines = ltable->item;
+ if (nlines <= 0)
+ return btrace_mk_line_range (symtab, 0, 0);
+
+ range = btrace_mk_line_range (symtab, 0, 0);
+ for (i = 0; i < nlines - 1; i++)
{
- ui_out_text (uiout, _("decode error ("));
- ui_out_field_int (uiout, "errcode", errcode);
- ui_out_text (uiout, _("): "));
+ if ((lines[i].pc == pc) && (lines[i].line != 0))
+ range = btrace_line_range_add (range, lines[i].line);
}
- ui_out_text (uiout, errstr);
- ui_out_text (uiout, _("]\n"));
+
+ return range;
}
-/* Print an unsigned int. */
+/* Print source lines in LINES to UIOUT.
+
+ UI_ITEM_CHAIN is a cleanup chain for the last source line and the
+ instructions corresponding to that source line. When printing a new source
+ line, we do the cleanups for the open chain and open a new cleanup chain for
+ the new source line. If the source line range in LINES is not empty, this
+ function will leave the cleanup chain for the last printed source line open
+ so instructions can be added to it. */
static void
-ui_out_field_uint (struct ui_out *uiout, const char *fld, unsigned int val)
+btrace_print_lines (struct btrace_line_range lines, struct ui_out *uiout,
+ struct cleanup **ui_item_chain, int flags)
{
- ui_out_field_fmt (uiout, fld, "%u", val);
+ 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)
+ {
+ if (*ui_item_chain != NULL)
+ do_cleanups (*ui_item_chain);
+
+ *ui_item_chain
+ = make_cleanup_ui_out_tuple_begin_end (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");
+ }
}
/* Disassemble a section of the recorded instruction trace. */
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 cleanup *cleanups, *ui_item_chain;
struct gdbarch *gdbarch;
struct btrace_insn_iterator it;
+ struct btrace_line_range last_lines;
+
+ DEBUG ("itrace (0x%x): [%u; %u)", (unsigned) flags,
+ btrace_insn_number (begin), btrace_insn_number (end));
- DEBUG ("itrace (0x%x): [%u; %u)", flags, btrace_insn_number (begin),
- btrace_insn_number (end));
+ flags |= DISASSEMBLY_SPECULATIVE;
gdbarch = target_gdbarch ();
+ last_lines = btrace_mk_line_range (NULL, 0, 0);
+
+ cleanups = make_cleanup_ui_out_list_begin_end (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_pretty_print_disassembler disasm (gdbarch);
for (it = *begin; btrace_insn_cmp (&it, end) != 0; btrace_insn_next (&it, 1))
{
/* 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
{
- char prefix[4];
+ struct disasm_insn dinsn;
- /* We may add a speculation prefix later. We use the same space
- that is used for the pc prefix. */
- if ((flags & DISASSEMBLY_OMIT_PC) == 0)
- strncpy (prefix, pc_prefix (insn->pc), 3);
- else
+ if ((flags & DISASSEMBLY_SOURCE) != 0)
{
- prefix[0] = ' ';
- prefix[1] = ' ';
- prefix[2] = ' ';
+ struct btrace_line_range lines;
+
+ lines = btrace_find_line_range (insn->pc);
+ if (!btrace_line_range_is_empty (lines)
+ && !btrace_line_range_contains_range (last_lines, lines))
+ {
+ btrace_print_lines (lines, uiout, &ui_item_chain, flags);
+ last_lines = lines;
+ }
+ else if (ui_item_chain == NULL)
+ {
+ ui_item_chain
+ = make_cleanup_ui_out_tuple_begin_end (uiout,
+ "src_and_asm_line");
+ /* No source information. */
+ make_cleanup_ui_out_list_begin_end (uiout, "line_asm_insn");
+ }
+
+ gdb_assert (ui_item_chain != NULL);
}
- prefix[3] = 0;
- /* Print the instruction index. */
- ui_out_field_uint (uiout, "index", btrace_insn_number (&it));
- ui_out_text (uiout, "\t");
+ memset (&dinsn, 0, sizeof (dinsn));
+ dinsn.number = btrace_insn_number (&it);
+ dinsn.addr = insn->pc;
- /* Indicate speculative execution by a leading '?'. */
if ((insn->flags & BTRACE_INSN_FLAG_SPECULATIVE) != 0)
- prefix[0] = '?';
-
- /* Print the prefix; we tell gdb_disassembly below to omit it. */
- ui_out_field_fmt (uiout, "prefix", "%s", prefix);
+ dinsn.is_speculative = 1;
- /* Disassembly with '/m' flag may not produce the expected result.
- See PR gdb/11833. */
- gdb_disassembly (gdbarch, uiout, NULL, flags | DISASSEMBLY_OMIT_PC,
- 1, insn->pc, insn->pc + 1);
+ disasm.pretty_print_insn (uiout, &dinsn, flags);
}
}
+
+ do_cleanups (cleanups);
}
/* The to_insn_history method of target record-btrace. */
static void
-record_btrace_insn_history (struct target_ops *self, int size, int flags)
+record_btrace_insn_history (struct target_ops *self, 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."));
{
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. */
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)
}
btrace_set_insn_history (btinfo, &begin, &end);
- do_cleanups (uiout_cleanup);
}
/* The to_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)
+ 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)
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. */
static void
record_btrace_insn_history_from (struct target_ops *self,
- ULONGEST from, int size, int flags)
+ ULONGEST from, int size,
+ gdb_disassembly_flags flags)
{
ULONGEST begin, end, context;
{
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, ",");
+ uiout->text (",");
ui_out_field_uint (uiout, "insn end", end);
}
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;
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:
if (sym == NULL)
return;
- ui_out_field_string (uiout, "file",
+ uiout->field_string ("file",
symtab_to_filename_for_display (symbol_symtab (sym)));
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_int ("min line", begin);
if (end == begin)
return;
- ui_out_text (uiout, ",");
- ui_out_field_int (uiout, "max line", end);
+ uiout->text (",");
+ uiout->field_int ("max line", end);
}
/* Get the name of a branch trace function. */
const struct btrace_thread_info *btinfo,
const struct btrace_call_iterator *begin,
const struct btrace_call_iterator *end,
- enum record_print_flag flags)
+ int int_flags)
{
struct btrace_call_iterator it;
+ record_print_flags flags = (enum record_print_flag) int_flags;
- DEBUG ("ftrace (0x%x): [%u; %u)", flags, btrace_call_number (begin),
+ DEBUG ("ftrace (0x%x): [%u; %u)", int_flags, btrace_call_number (begin),
btrace_call_number (end));
for (it = *begin; btrace_call_cmp (&it, end) < 0; btrace_call_next (&it, 1))
/* Print the function index. */
ui_out_field_uint (uiout, "index", bfun->number);
- ui_out_text (uiout, "\t");
+ uiout->text ("\t");
/* Indicate gaps in the trace. */
if (bfun->errcode != 0)
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));
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));
+ else if (!uiout->is_mi_like_p ())
+ uiout->field_string ("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. */
static void
-record_btrace_call_history (struct target_ops *self, int size, int flags)
+record_btrace_call_history (struct target_ops *self, int size, int int_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."));
{
struct btrace_insn_iterator *replay;
- DEBUG ("call-history (0x%x): %d", 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);
begin = history->begin;
end = history->end;
- DEBUG ("call-history (0x%x): %d, prev: [%u; %u)", 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)
}
btrace_set_call_history (btinfo, &begin, &end);
- do_cleanups (uiout_cleanup);
}
/* The to_call_history_range method of target record-btrace. */
static void
record_btrace_call_history_range (struct target_ops *self,
- ULONGEST from, ULONGEST to, int flags)
+ ULONGEST from, ULONGEST to,
+ int int_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)", flags, low, high);
+ DEBUG ("call-history (0x%x): [%u; %u)", int_flags, low, high);
/* Check for wrap-arounds. */
if (low != from || high != to)
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. */
static void
record_btrace_call_history_from (struct target_ops *self,
- ULONGEST from, int size, int flags)
+ ULONGEST from, int size,
+ int int_flags)
{
ULONGEST begin, end, context;
+ record_print_flags flags = (enum record_print_flag) int_flags;
context = abs (size);
if (context == 0)
record_btrace_call_history_range (self, begin, end, flags);
}
+/* The to_record_method method of target record-btrace. */
+
+static enum record_method
+record_btrace_record_method (struct target_ops *self, ptid_t ptid)
+{
+ const struct btrace_config *config;
+ struct thread_info * const tp = find_thread_ptid (ptid);
+
+ if (tp == NULL)
+ error (_("No thread."));
+
+ if (tp->btrace.target == NULL)
+ return RECORD_METHOD_NONE;
+
+ return RECORD_METHOD_BTRACE;
+}
+
/* The to_record_is_replaying method of target record-btrace. */
static int
& 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;
}
}
static int
record_btrace_remove_breakpoint (struct target_ops *ops,
struct gdbarch *gdbarch,
- struct bp_target_info *bp_tgt)
+ struct bp_target_info *bp_tgt,
+ enum remove_bp_reason reason)
{
const char *old;
int ret;
ret = 0;
TRY
{
- ret = ops->beneath->to_remove_breakpoint (ops->beneath, gdbarch, bp_tgt);
+ ret = ops->beneath->to_remove_breakpoint (ops->beneath, gdbarch, bp_tgt,
+ reason);
}
CATCH (except, RETURN_MASK_ALL)
{
struct btrace_insn_iterator *replay;
struct thread_info *tp;
- tp = find_thread_ptid (inferior_ptid);
+ tp = find_thread_ptid (regcache_get_ptid (regcache));
gdb_assert (tp != NULL);
replay = tp->btrace.replay;
struct gdbarch *gdbarch;
int pcreg;
- gdbarch = get_regcache_arch (regcache);
+ gdbarch = regcache->arch ();
pcreg = gdbarch_pc_regnum (gdbarch);
if (pcreg < 0)
return;
struct target_ops *t;
if (!record_btrace_generating_corefile
- && record_btrace_is_replaying (ops, inferior_ptid))
+ && record_btrace_is_replaying (ops, regcache_get_ptid (regcache)))
error (_("Cannot write registers while replaying."));
gdb_assert (may_write_registers != 0);
struct target_ops *t;
if (!record_btrace_generating_corefile
- && record_btrace_is_replaying (ops, inferior_ptid))
+ && record_btrace_is_replaying (ops, regcache_get_ptid (regcache)))
return;
t = ops->beneath;
static hashval_t
bfcache_hash (const void *arg)
{
- const struct btrace_frame_cache *cache = arg;
+ const struct btrace_frame_cache *cache
+ = (const struct btrace_frame_cache *) arg;
return htab_hash_pointer (cache->frame);
}
static int
bfcache_eq (const void *arg1, const void *arg2)
{
- const struct btrace_frame_cache *cache1 = arg1;
- const struct btrace_frame_cache *cache2 = arg2;
+ const struct btrace_frame_cache *cache1
+ = (const struct btrace_frame_cache *) arg1;
+ const struct btrace_frame_cache *cache2
+ = (const struct btrace_frame_cache *) arg2;
return cache1->frame == cache2->frame;
}
if (slot == NULL)
return NULL;
- cache = *slot;
+ cache = (const struct btrace_frame_cache *) *slot;
return cache->bfun;
}
const struct btrace_frame_cache *cache;
const struct btrace_function *bfun;
- cache = *this_cache;
+ cache = (const struct btrace_frame_cache *) *this_cache;
bfun = cache->bfun;
gdb_assert (bfun != NULL);
- if (bfun->up == NULL)
+ if (bfun->up == 0)
return UNWIND_UNAVAILABLE;
return UNWIND_NO_REASON;
{
const struct btrace_frame_cache *cache;
const struct btrace_function *bfun;
+ struct btrace_call_iterator it;
CORE_ADDR code, special;
- cache = *this_cache;
+ cache = (const struct btrace_frame_cache *) *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;
{
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;
throw_error (NOT_AVAILABLE_ERROR,
_("Registers are not available in btrace record history"));
- cache = *this_cache;
+ cache = (const struct btrace_frame_cache *) *this_cache;
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);
}
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)
{
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)
if ((callee->flags & BFUN_UP_LINKS_TO_TAILCALL) == 0)
return 0;
- bfun = callee->up;
- if (bfun == NULL)
+ tinfo = find_thread_ptid (inferior_ptid);
+ 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;
struct btrace_frame_cache *cache;
void **slot;
- cache = this_cache;
+ cache = (struct btrace_frame_cache *) this_cache;
slot = htab_find_slot (bfcache, cache, NO_INSERT);
gdb_assert (slot != NULL);
{
struct btrace_thread_info *btinfo;
- DEBUG ("resuming thread %d (%s): %x (%s)", tp->num,
+ DEBUG ("resuming thread %s (%s): %x (%s)", print_thread_id (tp),
target_pid_to_str (tp->ptid), flag, btrace_thread_flag_to_str (flag));
btinfo = &tp->btrace;
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
&& !record_btrace_is_replaying (ops, minus_one_ptid))
{
ops = ops->beneath;
- return ops->to_resume (ops, ptid, step, signal);
+ ops->to_resume (ops, ptid, step, signal);
+ return;
}
/* Compute the btrace thread flag for the requested move. */
}
}
+/* The to_commit_resume method of target record-btrace. */
+
+static void
+record_btrace_commit_resume (struct target_ops *ops)
+{
+ if ((execution_direction != EXEC_REVERSE)
+ && !record_btrace_is_replaying (ops, minus_one_ptid))
+ ops->beneath->to_commit_resume (ops->beneath);
+}
+
/* Cancel resuming TP. */
static void
if (flags == 0)
return;
- DEBUG ("cancel resume thread %d (%s): %x (%s)", tp->num,
+ DEBUG ("cancel resume thread %s (%s): %x (%s)",
+ print_thread_id (tp),
target_pid_to_str (tp->ptid), flags,
btrace_thread_flag_to_str (flags));
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;
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;
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);
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;
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);
flags = btinfo->flags & (BTHR_MOVE | BTHR_STOP);
btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP);
- DEBUG ("stepping thread %d (%s): %x (%s)", tp->num,
+ DEBUG ("stepping thread %s (%s): %x (%s)", print_thread_id (tp),
target_pid_to_str (tp->ptid), flags,
btrace_thread_flag_to_str (flags));
*status = btrace_step_no_resumed ();
DEBUG ("wait ended by %s: %s", target_pid_to_str (null_ptid),
- target_waitstatus_to_string (status));
+ target_waitstatus_to_string (status).c_str ());
do_cleanups (cleanups);
return null_ptid;
/* We moved the replay position but did not update registers. */
registers_changed_ptid (eventing->ptid);
- DEBUG ("wait ended by thread %d (%s): %s", eventing->num,
+ DEBUG ("wait ended by thread %s (%s): %s",
+ print_thread_id (eventing),
target_pid_to_str (eventing->ptid),
- target_waitstatus_to_string (status));
+ target_waitstatus_to_string (status).c_str ());
do_cleanups (cleanups);
return eventing->ptid;
btinfo = &tp->btrace;
- if (it == NULL || it->function == NULL)
+ if (it == NULL)
record_btrace_stop_replaying (tp);
else
{
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);
}
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);
ops->to_close = record_btrace_close;
ops->to_async = record_btrace_async;
ops->to_detach = record_detach;
- ops->to_disconnect = record_disconnect;
+ ops->to_disconnect = record_btrace_disconnect;
ops->to_mourn_inferior = record_mourn_inferior;
ops->to_kill = record_kill;
ops->to_stop_recording = record_btrace_stop_recording;
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_method = record_btrace_record_method;
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_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_commit_resume = record_btrace_commit_resume;
ops->to_wait = record_btrace_wait;
ops->to_stop = record_btrace_stop;
ops->to_update_thread_list = record_btrace_update_thread_list;
/* 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."));
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."));
/* 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."));
/* 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, "");
}
/* 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, "");
}
/* The "set record btrace bts" command. */
static void
-cmd_set_record_btrace_bts (char *args, int from_tty)
+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"));
/* 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, "");
}
/* 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"));
/* 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, "");
}
value);
}
-void _initialize_record_btrace (void);
-
/* Initialize btrace commands. */
void
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);
projects / deliverable / binutils-gdb.git / blobdiff