/* Tracing functionality for remote targets in custom GDB protocol
- Copyright (C) 1997-2019 Free Software Foundation, Inc.
+ Copyright (C) 1997-2021 Free Software Foundation, Inc.
This file is part of GDB.
#include "memrange.h"
#include "cli/cli-utils.h"
#include "probe.h"
-#include "ctf.h"
#include "gdbsupport/filestuff.h"
#include "gdbsupport/rsp-low.h"
#include "tracefile.h"
#include "location.h"
#include <algorithm>
-
-/* readline include files */
-#include "readline/readline.h"
-#include "readline/history.h"
-
-/* readline defines this. */
-#undef savestring
+#include "cli/cli-style.h"
+#include "expop.h"
#include <unistd.h>
/* List of expressions to collect by default at each tracepoint hit. */
char *default_collect;
-static int disconnected_tracing;
+static bool disconnected_tracing;
/* This variable controls whether we ask the target for a linear or
circular trace buffer. */
-static int circular_trace_buffer;
+static bool circular_trace_buffer;
/* This variable is the requested trace buffer size, or -1 to indicate
that we don't care and leave it up to the target to set a size. */
/* Textual notes applying to the current and/or future trace runs. */
-char *trace_user = NULL;
+static char *trace_user = NULL;
/* Textual notes applying to the current and/or future trace runs. */
-char *trace_notes = NULL;
+static char *trace_notes = NULL;
/* Textual notes applying to the stopping of a trace. */
-char *trace_stop_notes = NULL;
+static char *trace_stop_notes = NULL;
/* support routines */
/* Save func name as "$trace_func", a debugger variable visible to
users. */
if (traceframe_fun == NULL
- || SYMBOL_LINKAGE_NAME (traceframe_fun) == NULL)
+ || traceframe_fun->linkage_name () == NULL)
clear_internalvar (lookup_internalvar ("trace_func"));
else
set_internalvar_string (lookup_internalvar ("trace_func"),
- SYMBOL_LINKAGE_NAME (traceframe_fun));
+ traceframe_fun->linkage_name ());
/* Save file name as "$trace_file", a debugger variable visible to
users. */
uiout->field_string ("name", std::string ("$") + tsv.name);
uiout->field_string ("initial", plongest (tsv.initial_value));
+ ui_file_style style;
if (tsv.value_known)
c = plongest (tsv.value);
else if (uiout->is_mi_like_p ())
undefined does not seem important enough to represent. */
c = NULL;
else if (current_trace_status ()->running || traceframe_number >= 0)
- /* The value is/was defined, but we don't have it. */
- c = "<unknown>";
+ {
+ /* The value is/was defined, but we don't have it. */
+ c = "<unknown>";
+ style = metadata_style.style ();
+ }
else
- /* It is not meaningful to ask about the value. */
- c = "<undefined>";
+ {
+ /* It is not meaningful to ask about the value. */
+ c = "<undefined>";
+ style = metadata_style.style ();
+ }
if (c)
- uiout->field_string ("current", c);
+ uiout->field_string ("current", c, style);
uiout->text ("\n");
}
}
struct cmd_list_element *c;
const char *tmp_p;
const char *p;
- struct bp_location *loc;
struct tracepoint *t = (struct tracepoint *) b;
/* If EOF is typed, *line is NULL. */
if (*p == '#') /* comment line */
return;
- c = lookup_cmd (&p, cmdlist, "", -1, 1);
+ c = lookup_cmd (&p, cmdlist, "", NULL, -1, 1);
if (c == 0)
error (_("`%s' is not a tracepoint action, or is ambiguous."), p);
/* else fall thru, treat p as an expression and parse it! */
}
tmp_p = p;
- for (loc = t->loc; loc; loc = loc->next)
+ for (bp_location *loc : t->locations ())
{
p = tmp_p;
expression_up exp = parse_exp_1 (&p, loc->address,
block_for_pc (loc->address), 1);
- if (exp->elts[0].opcode == OP_VAR_VALUE)
+ if (exp->first_opcode () == OP_VAR_VALUE)
{
- if (SYMBOL_CLASS (exp->elts[2].symbol) == LOC_CONST)
+ symbol *sym;
+ expr::var_value_operation *vvop
+ = (dynamic_cast<expr::var_value_operation *>
+ (exp->op.get ()));
+ sym = vvop->get_symbol ();
+
+ if (SYMBOL_CLASS (sym) == LOC_CONST)
{
error (_("constant `%s' (value %s) "
"will not be collected."),
- SYMBOL_PRINT_NAME (exp->elts[2].symbol),
- plongest (SYMBOL_VALUE (exp->elts[2].symbol)));
+ sym->print_name (),
+ plongest (SYMBOL_VALUE (sym)));
}
- else if (SYMBOL_CLASS (exp->elts[2].symbol)
- == LOC_OPTIMIZED_OUT)
+ else if (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT)
{
error (_("`%s' is optimized away "
"and cannot be collected."),
- SYMBOL_PRINT_NAME (exp->elts[2].symbol));
+ sym->print_name ());
}
}
p = skip_spaces (p);
tmp_p = p;
- for (loc = t->loc; loc; loc = loc->next)
+ for (bp_location *loc : t->locations ())
{
p = tmp_p;
{
default:
printf_filtered ("%s: don't know symbol class %d\n",
- SYMBOL_PRINT_NAME (sym),
- SYMBOL_CLASS (sym));
+ sym->print_name (), SYMBOL_CLASS (sym));
break;
case LOC_CONST:
printf_filtered ("constant %s (value %s) will not be collected.\n",
- SYMBOL_PRINT_NAME (sym), plongest (SYMBOL_VALUE (sym)));
+ sym->print_name (), plongest (SYMBOL_VALUE (sym)));
break;
case LOC_STATIC:
offset = SYMBOL_VALUE_ADDRESS (sym);
if (info_verbose)
{
printf_filtered ("LOC_STATIC %s: collect %ld bytes at %s.\n",
- SYMBOL_PRINT_NAME (sym), len,
+ sym->print_name (), len,
paddress (gdbarch, offset));
}
/* A struct may be a C++ class with static fields, go to general
expression handling. */
- if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT)
+ if (SYMBOL_TYPE (sym)->code () == TYPE_CODE_STRUCT)
treat_as_expr = 1;
else
add_memrange (gdbarch, memrange_absolute, offset, len, scope);
case LOC_REGISTER:
reg = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch);
if (info_verbose)
- printf_filtered ("LOC_REG[parm] %s: ",
- SYMBOL_PRINT_NAME (sym));
+ printf_filtered ("LOC_REG[parm] %s: ", sym->print_name ());
add_local_register (gdbarch, reg, scope);
/* Check for doubles stored in two registers. */
/* FIXME: how about larger types stored in 3 or more regs? */
- if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FLT &&
+ if (SYMBOL_TYPE (sym)->code () == TYPE_CODE_FLT &&
len > register_size (gdbarch, reg))
add_local_register (gdbarch, reg + 1, scope);
break;
case LOC_REF_ARG:
printf_filtered ("Sorry, don't know how to do LOC_REF_ARG yet.\n");
- printf_filtered (" (will not collect %s)\n",
- SYMBOL_PRINT_NAME (sym));
+ printf_filtered (" (will not collect %s)\n", sym->print_name ());
break;
case LOC_ARG:
reg = frame_regno;
if (info_verbose)
{
printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset %s"
- " from frame ptr reg %d\n",
- SYMBOL_PRINT_NAME (sym), len,
+ " from frame ptr reg %d\n", sym->print_name (), len,
paddress (gdbarch, offset), reg);
}
add_memrange (gdbarch, reg, offset, len, scope);
if (info_verbose)
{
printf_filtered ("LOC_REGPARM_ADDR %s: Collect %ld bytes at offset %s"
- " from reg %d\n",
- SYMBOL_PRINT_NAME (sym), len,
+ " from reg %d\n", sym->print_name (), len,
paddress (gdbarch, offset), reg);
}
add_memrange (gdbarch, reg, offset, len, scope);
if (info_verbose)
{
printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset %s"
- " from frame ptr reg %d\n",
- SYMBOL_PRINT_NAME (sym), len,
+ " from frame ptr reg %d\n", sym->print_name (), len,
paddress (gdbarch, offset), reg);
}
add_memrange (gdbarch, reg, offset, len, scope);
case LOC_OPTIMIZED_OUT:
printf_filtered ("%s has been optimized out of existence.\n",
- SYMBOL_PRINT_NAME (sym));
+ sym->print_name ());
break;
case LOC_COMPUTED:
if (!aexpr)
{
printf_filtered ("%s has been optimized out of existence.\n",
- SYMBOL_PRINT_NAME (sym));
+ sym->print_name ());
return;
}
}
{
- bfd_signed_vma length
+ bfd_signed_vma length
= m_memranges[i].end - m_memranges[i].start;
- /* The "%X" conversion specifier expects an unsigned argument,
- so passing -1 (memrange_absolute) to it directly gives you
- "FFFFFFFF" (or more, depending on sizeof (unsigned)).
- Special-case it. */
- if (m_memranges[i].type == memrange_absolute)
- sprintf (end, "M-1,%s,%lX", phex_nz (m_memranges[i].start, 0),
+ /* The "%X" conversion specifier expects an unsigned argument,
+ so passing -1 (memrange_absolute) to it directly gives you
+ "FFFFFFFF" (or more, depending on sizeof (unsigned)).
+ Special-case it. */
+ if (m_memranges[i].type == memrange_absolute)
+ sprintf (end, "M-1,%s,%lX", phex_nz (m_memranges[i].start, 0),
(long) length);
- else
- sprintf (end, "M%X,%s,%lX", m_memranges[i].type,
+ else
+ sprintf (end, "M%X,%s,%lX", m_memranges[i].type,
phex_nz (m_memranges[i].start, 0), (long) length);
}
return str_list;
}
-/* Add the printed expression EXP to *LIST. */
+/* Add the expression STR to M_COMPUTED. */
void
-collection_list::append_exp (struct expression *exp)
+collection_list::append_exp (std::string &&str)
{
- string_file tmp_stream;
-
- print_expression (exp, &tmp_stream);
-
- m_computed.push_back (std::move (tmp_stream.string ()));
+ m_computed.push_back (std::move (str));
}
void
action_exp = action->line;
action_exp = skip_spaces (action_exp);
- cmd = lookup_cmd (&action_exp, cmdlist, "", -1, 1);
+ cmd = lookup_cmd (&action_exp, cmdlist, "", NULL, -1, 1);
if (cmd == 0)
error (_("Bad action list item: %s"), action_exp);
{
unsigned long addr;
+ const char *exp_start = action_exp;
expression_up exp = parse_exp_1 (&action_exp, tloc->address,
block_for_pc (tloc->address),
1);
- switch (exp->elts[0].opcode)
+ switch (exp->first_opcode ())
{
case OP_REGISTER:
{
- const char *name = &exp->elts[2].string;
+ expr::register_operation *regop
+ = (dynamic_cast<expr::register_operation *>
+ (exp->op.get ()));
+ const char *name = regop->get_name ();
i = user_reg_map_name_to_regnum (target_gdbarch (),
name, strlen (name));
}
case UNOP_MEMVAL:
- /* Safe because we know it's a simple expression. */
- tempval = evaluate_expression (exp.get ());
- addr = value_address (tempval);
- /* Initialize the TYPE_LENGTH if it is a typedef. */
- check_typedef (exp->elts[1].type);
- collect->add_memrange (target_gdbarch (),
- memrange_absolute, addr,
- TYPE_LENGTH (exp->elts[1].type),
- tloc->address);
- collect->append_exp (exp.get ());
+ {
+ /* Safe because we know it's a simple expression. */
+ tempval = evaluate_expression (exp.get ());
+ addr = value_address (tempval);
+ expr::unop_memval_operation *memop
+ = (dynamic_cast<expr::unop_memval_operation *>
+ (exp->op.get ()));
+ struct type *type = memop->get_type ();
+ /* Initialize the TYPE_LENGTH if it is a typedef. */
+ check_typedef (type);
+ collect->add_memrange (target_gdbarch (),
+ memrange_absolute, addr,
+ TYPE_LENGTH (type),
+ tloc->address);
+ collect->append_exp (std::string (exp_start,
+ action_exp));
+ }
break;
case OP_VAR_VALUE:
{
- struct symbol *sym = exp->elts[2].symbol;
- const char *name = SYMBOL_NATURAL_NAME (sym);
+ expr::var_value_operation *vvo
+ = (dynamic_cast<expr::var_value_operation *>
+ (exp->op.get ()));
+ struct symbol *sym = vvo->get_symbol ();
+ const char *name = sym->natural_name ();
- collect->collect_symbol (exp->elts[2].symbol,
+ collect->collect_symbol (sym,
target_gdbarch (),
frame_reg,
frame_offset,
collect->add_ax_registers (aexpr.get ());
collect->add_aexpr (std::move (aexpr));
- collect->append_exp (exp.get ());
+ collect->append_exp (std::string (exp_start,
+ action_exp));
break;
} /* switch */
} /* do */
}
else
{
- struct bp_location *loc1;
-
- for (loc1 = b->loc; loc1; loc1 = loc1->next)
+ for (bp_location *loc1 : b->locations ())
{
if (loc1->shlib_disabled)
{
int any_enabled = 0, num_to_download = 0;
int ret;
- std::vector<breakpoint *> tp_vec = all_tracepoints ();
+ auto tracepoint_range = all_tracepoints ();
/* No point in tracing without any tracepoints... */
- if (tp_vec.empty ())
+ if (tracepoint_range.begin () == tracepoint_range.end ())
error (_("No tracepoints defined, not starting trace"));
- for (breakpoint *b : tp_vec)
+ for (breakpoint *b : tracepoint_range)
{
if (b->enable_state == bp_enabled)
any_enabled = 1;
target_trace_init ();
- for (breakpoint *b : tp_vec)
+ for (breakpoint *b : tracepoint_range)
{
struct tracepoint *t = (struct tracepoint *) b;
- struct bp_location *loc;
int bp_location_downloaded = 0;
/* Clear `inserted' flag. */
- for (loc = b->loc; loc; loc = loc->next)
+ for (bp_location *loc : b->locations ())
loc->inserted = 0;
if ((b->type == bp_fast_tracepoint
t->number_on_target = 0;
- for (loc = b->loc; loc; loc = loc->next)
+ for (bp_location *loc : b->locations ())
{
/* Since tracepoint locations are never duplicated, `inserted'
flag should be zero. */
t->number_on_target = b->number;
- for (loc = b->loc; loc; loc = loc->next)
+ for (bp_location *loc : b->locations ())
if (loc->probe.prob != NULL)
loc->probe.prob->set_semaphore (loc->probe.objfile,
loc->gdbarch);
for (breakpoint *t : all_tracepoints ())
{
- struct bp_location *loc;
-
if ((t->type == bp_fast_tracepoint
? !may_insert_fast_tracepoints
: !may_insert_tracepoints))
continue;
- for (loc = t->loc; loc; loc = loc->next)
+ for (bp_location *loc : t->locations ())
{
/* GDB can be totally absent in some disconnected trace scenarios,
but we don't really care if this semaphore goes out of sync.
DON'T give an error, but DO change the state of
traceframe_number etc. to invalid.
- The rationalle is that if you typed the command, you
+ The rationale is that if you typed the command, you
might just have committed a typo or something, and you'd
like to NOT lose your current debugging state. However
if you're in a user-defined command or especially in a
enum print_what print_what;
/* NOTE: in imitation of the step command, try to determine
- whether we have made a transition from one function to
- another. If so, we'll print the "stack frame" (ie. the new
- function and it's arguments) -- otherwise we'll just show the
- new source line. */
+ whether we have made a transition from one function to
+ another. If so, we'll print the "stack frame" (ie. the new
+ function and it's arguments) -- otherwise we'll just show the
+ new source line. */
if (frame_id_eq (old_frame_id,
get_frame_id (get_current_frame ())))
{ /* TFIND with no args means find NEXT trace frame. */
if (traceframe_number == -1)
frameno = 0; /* "next" is first one. */
- else
+ else
frameno = traceframe_number + 1;
}
else if (0 == strcmp (args, "-"))
if (sal.line > 0 && find_line_pc_range (sal, &start_pc, &end_pc))
{
if (start_pc == end_pc)
- {
+ {
printf_filtered ("Line %d of \"%s\"",
sal.line,
symtab_to_filename_for_display (sal.symtab));
&& start_pc != end_pc)
printf_filtered ("Attempting to find line %d instead.\n",
sal.line);
- else
+ else
error (_("Cannot find a good line."));
- }
+ }
}
else
- /* Is there any case in which we get here, and have an address
- which the user would want to see? If we have debugging
- symbols and no line numbers? */
- error (_("Line number %d is out of range for \"%s\"."),
- sal.line, symtab_to_filename_for_display (sal.symtab));
+ {
+ /* Is there any case in which we get here, and have an address
+ which the user would want to see? If we have debugging
+ symbols and no line numbers? */
+ error (_("Line number %d is out of range for \"%s\"."),
+ sal.line, symtab_to_filename_for_display (sal.symtab));
+ }
/* Find within range of stated line. */
if (args && *args)
printf_filtered ("Scope for %s:\n", save_args);
count++;
- symname = SYMBOL_PRINT_NAME (sym);
+ symname = sym->print_name ();
if (symname == NULL || *symname == '\0')
continue; /* Probably botched, certainly useless. */
paddress (gdbarch, BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym))));
break;
case LOC_UNRESOLVED:
- msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym),
+ msym = lookup_minimal_symbol (sym->linkage_name (),
NULL, NULL);
if (msym.minsym == NULL)
printf_filtered ("Unresolved Static");
action_exp = skip_spaces (action_exp);
/* The collection actions to be done while stepping are
- bracketed by the commands "while-stepping" and "end". */
+ bracketed by the commands "while-stepping" and "end". */
if (*action_exp == '#') /* comment line */
continue;
- cmd = lookup_cmd (&action_exp, cmdlist, "", -1, 1);
+ cmd = lookup_cmd (&action_exp, cmdlist, "", NULL, -1, 1);
if (cmd == 0)
error (_("Bad action list item: %s"), action_exp);
get_traceframe_location (int *stepping_frame_p)
{
struct tracepoint *t;
- struct bp_location *tloc;
struct regcache *regcache;
if (tracepoint_number == -1)
locations, assume it is a direct hit rather than a while-stepping
frame. (FIXME this is not reliable, should record each frame's
type.) */
- for (tloc = t->loc; tloc; tloc = tloc->next)
+ for (bp_location *tloc : t->locations ())
if (tloc->address == regcache_read_pc (regcache))
{
*stepping_frame_p = 0;
identifier! */
uiout->field_signed ("count", count);
- uiout->field_string ("marker-id", marker.str_id.c_str ());
+ uiout->field_string ("marker-id", marker.str_id);
uiout->field_fmt ("enabled", "%c",
!tracepoints.empty () ? 'y' : 'n');
if (sym)
{
uiout->text ("in ");
- uiout->field_string ("func", SYMBOL_PRINT_NAME (sym),
- ui_out_style_kind::FUNCTION);
+ uiout->field_string ("func", sym->print_name (),
+ function_name_style.style ());
uiout->wrap_hint (wrap_indent);
uiout->text (" at ");
}
{
uiout->field_string ("file",
symtab_to_filename_for_display (sal.symtab),
- ui_out_style_kind::FILE);
+ file_name_style.style ());
uiout->text (":");
if (uiout->is_mi_like_p ())
uiout->text ("\n");
uiout->text (extra_field_indent);
uiout->text (_("Data: \""));
- uiout->field_string ("extra-data", marker.extra.c_str ());
+ uiout->field_string ("extra-data", marker.extra);
uiout->text ("\"\n");
if (!tracepoints.empty ())
{
/* We need to read the whole object before we know its size. */
gdb::optional<gdb::byte_vector> buf
- = target_read_alloc (current_top_target (), TARGET_OBJECT_STATIC_TRACE_DATA,
+ = target_read_alloc (current_inferior ()->top_target (),
+ TARGET_OBJECT_STATIC_TRACE_DATA,
NULL);
if (buf)
{
cmd_list_element *while_stepping_cmd_element = nullptr;
/* module initialization */
+void _initialize_tracepoint ();
void
-_initialize_tracepoint (void)
+_initialize_tracepoint ()
{
struct cmd_list_element *c;
tracepoint_number = -1;
add_info ("scope", info_scope_command,
- _("List the variables local to a scope"));
+ _("List the variables local to a scope."));
add_cmd ("tracepoints", class_trace,
_("Tracing of program execution without stopping the program."),
List target static tracepoints markers."));
add_prefix_cmd ("tfind", class_trace, tfind_command, _("\
-Select a trace frame;\n\
+Select a trace frame.\n\
No argument means forward by one frame; '-' means backward by one frame."),
- &tfindlist, "tfind ", 1, &cmdlist);
+ &tfindlist, 1, &cmdlist);
add_cmd ("outside", class_trace, tfind_outside_command, _("\
Select a trace frame whose PC is outside the given range (exclusive).\n\
Default is the current PC, or the PC of the current trace frame."),
&tfindlist);
- add_cmd ("end", class_trace, tfind_end_command, _("\
-De-select any trace frame and resume 'live' debugging."),
- &tfindlist);
+ cmd_list_element *tfind_end_cmd
+ = add_cmd ("end", class_trace, tfind_end_command, _("\
+De-select any trace frame and resume 'live' debugging."), &tfindlist);
- add_alias_cmd ("none", "end", class_trace, 0, &tfindlist);
+ add_alias_cmd ("none", tfind_end_cmd, class_trace, 0, &tfindlist);
add_cmd ("start", class_trace, tfind_start_command,
_("Select the first trace frame in the trace buffer."),
while single-stepping.\n\n\
Note: this command can only be used in a tracepoint \"actions\" list."));
- add_com_alias ("ws", "while-stepping", class_alias, 0);
- add_com_alias ("stepping", "while-stepping", class_alias, 0);
+ add_com_alias ("ws", while_stepping_cmd_element, class_trace, 0);
+ add_com_alias ("stepping", while_stepping_cmd_element, class_trace, 0);
add_com ("collect", class_trace, collect_pseudocommand, _("\
Specify one or more data items to be collected at a tracepoint.\n\
default_collect = xstrdup ("");
add_setshow_string_cmd ("default-collect", class_trace,
&default_collect, _("\
-Set the list of expressions to collect by default"), _("\
-Show the list of expressions to collect by default"), NULL,
+Set the list of expressions to collect by default."), _("\
+Show the list of expressions to collect by default."), NULL,
NULL, NULL,
&setlist, &showlist);
add_setshow_string_cmd ("trace-user", class_trace,
&trace_user, _("\
-Set the user name to use for current and future trace runs"), _("\
-Show the user name to use for current and future trace runs"), NULL,
+Set the user name to use for current and future trace runs."), _("\
+Show the user name to use for current and future trace runs."), NULL,
set_trace_user, NULL,
&setlist, &showlist);
add_setshow_string_cmd ("trace-notes", class_trace,
&trace_notes, _("\
-Set notes string to use for current and future trace runs"), _("\
-Show the notes string to use for current and future trace runs"), NULL,
+Set notes string to use for current and future trace runs."), _("\
+Show the notes string to use for current and future trace runs."), NULL,
set_trace_notes, NULL,
&setlist, &showlist);
add_setshow_string_cmd ("trace-stop-notes", class_trace,
&trace_stop_notes, _("\
-Set notes string to use for future tstop commands"), _("\
-Show the notes string to use for future tstop commands"), NULL,
+Set notes string to use for future tstop commands."), _("\
+Show the notes string to use for future tstop commands."), NULL,
set_trace_stop_notes, NULL,
&setlist, &showlist);
}