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authorMarkus Metzger <mmetzger@sourceware.org>2013-03-11 08:50:05 +0000
committerMarkus Metzger <mmetzger@sourceware.org>2013-03-11 08:50:05 +0000
commit15984c13c729e1f05eb789a3883df82994d5a593 (patch)
treef80d1649597fb49b4f33b80f3845f724565a1d34 /gdb
parent67c86d068313124e6c73e6ec0294866fc0471268 (diff)
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Add command to print the function names from recorded instructions.
This command provides a quick high-level overview over the recorded execution log at function granularity without having to reverse-step. gdb/ * target.c (target_call_history, target_call_history_from, target_call_history_range): New. * target.h (target_ops) <to_call_history, to_call_history_from, to_call_history_range>: New fields. (target_call_history, target_call_history_from, target_call_history_range): New declaration. * record.c (get_call_history_modifiers, cmd_record_call_history, record_call_history_size): New. (_initialize_record): Add the "record function-call-history" command. Add "set/show record function-call-history-size" commands. * record.h (record_print_flag): New.
Diffstat (limited to 'gdb')
-rw-r--r--gdb/ChangeLog14
-rw-r--r--gdb/record.c149
-rw-r--r--gdb/record.h10
-rw-r--r--gdb/target.c51
-rw-r--r--gdb/target.h24
5 files changed, 248 insertions, 0 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 4f92757..7383927 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,19 @@
2013-03-11 Markus Metzger <markus.t.metzger@intel.com>
+ * target.c (target_call_history, target_call_history_from,
+ target_call_history_range): New.
+ * target.h (target_ops) <to_call_history, to_call_history_from,
+ to_call_history_range>: New fields.
+ (target_call_history, target_call_history_from,
+ target_call_history_range): New declaration.
+ * record.c (get_call_history_modifiers, cmd_record_call_history,
+ record_call_history_size): New.
+ (_initialize_record): Add the "record function-call-history" command.
+ Add "set/show record function-call-history-size" commands.
+ * record.h (record_print_flag): New.
+
+2013-03-11 Markus Metzger <markus.t.metzger@intel.com>
+
* target.h (target_ops) <to_insn_history, to_insn_history_from,
to_insn_history_range>: New fields.
(target_insn_history): New.
diff --git a/gdb/record.c b/gdb/record.c
index ea8e7df..6ac7a56 100644
--- a/gdb/record.c
+++ b/gdb/record.c
@@ -35,6 +35,9 @@ unsigned int record_debug = 0;
/* The number of instructions to print in "record instruction-history". */
static unsigned int record_insn_history_size = 10;
+/* The number of functions to print in "record function-call-history". */
+static unsigned int record_call_history_size = 10;
+
struct cmd_list_element *record_cmdlist = NULL;
struct cmd_list_element *set_record_cmdlist = NULL;
struct cmd_list_element *show_record_cmdlist = NULL;
@@ -491,6 +494,126 @@ cmd_record_insn_history (char *arg, int from_tty)
}
}
+/* Read function-call-history modifiers from an argument string. */
+
+static int
+get_call_history_modifiers (char **arg)
+{
+ int modifiers;
+ char *args;
+
+ modifiers = 0;
+ args = *arg;
+
+ if (args == NULL)
+ return modifiers;
+
+ while (*args == '/')
+ {
+ ++args;
+
+ if (*args == '\0')
+ error (_("Missing modifier."));
+
+ for (; *args; ++args)
+ {
+ if (isspace (*args))
+ break;
+
+ if (*args == '/')
+ continue;
+
+ switch (*args)
+ {
+ case 'l':
+ modifiers |= record_print_src_line;
+ break;
+ case 'i':
+ modifiers |= record_print_insn_range;
+ break;
+ default:
+ error (_("Invalid modifier: %c."), *args);
+ }
+ }
+
+ args = skip_spaces (args);
+ }
+
+ /* Update the argument string. */
+ *arg = args;
+
+ return modifiers;
+}
+
+/* The "record function-call-history" command. */
+
+static void
+cmd_record_call_history (char *arg, int from_tty)
+{
+ int flags, size;
+
+ require_record_target ();
+
+ flags = get_call_history_modifiers (&arg);
+
+ /* We use a signed size to also indicate the direction. Make sure that
+ unlimited remains unlimited. */
+ size = (int) record_call_history_size;
+ if (size < 0)
+ size = INT_MAX;
+
+ if (arg == NULL || *arg == 0 || strcmp (arg, "+") == 0)
+ target_call_history (size, flags);
+ else if (strcmp (arg, "-") == 0)
+ target_call_history (-size, flags);
+ else
+ {
+ ULONGEST begin, end;
+
+ begin = get_insn_number (&arg);
+
+ if (*arg == ',')
+ {
+ arg = skip_spaces (++arg);
+
+ if (*arg == '+')
+ {
+ arg += 1;
+ size = get_context_size (&arg);
+
+ no_chunk (arg);
+
+ target_call_history_from (begin, size, flags);
+ }
+ else if (*arg == '-')
+ {
+ arg += 1;
+ size = get_context_size (&arg);
+
+ no_chunk (arg);
+
+ target_call_history_from (begin, -size, flags);
+ }
+ else
+ {
+ end = get_insn_number (&arg);
+
+ no_chunk (arg);
+
+ target_call_history_range (begin, end, flags);
+ }
+ }
+ else
+ {
+ no_chunk (arg);
+
+ target_call_history_from (begin, size, flags);
+ }
+
+ dont_repeat ();
+ }
+}
+
/* Provide a prototype to silence -Wmissing-prototypes. */
extern initialize_file_ftype _initialize_record;
@@ -514,6 +637,13 @@ Show number of instructions to print in \"record instruction-history\"."),
NULL, NULL, NULL, &set_record_cmdlist,
&show_record_cmdlist);
+ add_setshow_uinteger_cmd ("function-call-history-size", no_class,
+ &record_call_history_size, _("\
+Set number of function to print in \"record function-call-history\"."), _("\
+Show number of functions to print in \"record function-call-history\"."),
+ NULL, NULL, NULL, &set_record_cmdlist,
+ &show_record_cmdlist);
+
c = add_prefix_cmd ("record", class_obscure, cmd_record_start,
_("Start recording."),
&record_cmdlist, "record ", 0, &cmdlist);
@@ -574,4 +704,23 @@ from the first argument.\n\
The number of instructions to disassemble can be defined with \"set record \
instruction-history-size\"."),
&record_cmdlist);
+
+ add_cmd ("function-call-history", class_obscure, cmd_record_call_history, _("\
+Prints the execution history at function granularity.\n\
+It prints one line for each sequence of instructions that belong to the same \
+function.\n\
+Without modifiers, it prints the function name.\n\
+With a /l modifier, the source file and line number range is included.\n\
+With a /i modifier, the instruction number range is included.\n\
+With no argument, prints ten more lines after the previous ten-line print.\n\
+\"record function-call-history -\" prints ten lines before a previous ten-line \
+print.\n\
+One argument specifies a function number as shown by 'info record', and \
+ten lines are printed after that function.\n\
+Two arguments with comma between them specify a range of functions to print.\n\
+If the second argument is preceded by '+' or '-', it specifies the distance \
+from the first argument.\n\
+The number of functions to print can be defined with \"set record \
+function-call-history-size\"."),
+ &record_cmdlist);
}
diff --git a/gdb/record.h b/gdb/record.h
index 04d6b4a..86e6bc6 100644
--- a/gdb/record.h
+++ b/gdb/record.h
@@ -32,6 +32,16 @@ extern struct cmd_list_element *set_record_cmdlist;
extern struct cmd_list_element *show_record_cmdlist;
extern struct cmd_list_element *info_record_cmdlist;
+/* A list of flags specifying what record target methods should print. */
+enum record_print_flag
+{
+ /* Print the source file and line (if applicable). */
+ record_print_src_line = (1 << 0),
+
+ /* Print the instruction number range (if applicable). */
+ record_print_insn_range = (1 << 1),
+};
+
/* Wrapper for target_read_memory that prints a debug message if
reading memory fails. */
extern int record_read_memory (struct gdbarch *gdbarch,
diff --git a/gdb/target.c b/gdb/target.c
index 4bf4574..0329da3 100644
--- a/gdb/target.c
+++ b/gdb/target.c
@@ -4439,6 +4439,57 @@ target_insn_history_range (ULONGEST begin, ULONGEST end, int flags)
tcomplain ();
}
+/* See target.h. */
+
+void
+target_call_history (int size, int flags)
+{
+ struct target_ops *t;
+
+ for (t = current_target.beneath; t != NULL; t = t->beneath)
+ if (t->to_call_history != NULL)
+ {
+ t->to_call_history (size, flags);
+ return;
+ }
+
+ tcomplain ();
+}
+
+/* See target.h. */
+
+void
+target_call_history_from (ULONGEST begin, int size, int flags)
+{
+ struct target_ops *t;
+
+ for (t = current_target.beneath; t != NULL; t = t->beneath)
+ if (t->to_call_history_from != NULL)
+ {
+ t->to_call_history_from (begin, size, flags);
+ return;
+ }
+
+ tcomplain ();
+}
+
+/* See target.h. */
+
+void
+target_call_history_range (ULONGEST begin, ULONGEST end, int flags)
+{
+ struct target_ops *t;
+
+ for (t = current_target.beneath; t != NULL; t = t->beneath)
+ if (t->to_call_history_range != NULL)
+ {
+ t->to_call_history_range (begin, end, flags);
+ return;
+ }
+
+ tcomplain ();
+}
+
static void
debug_to_prepare_to_store (struct regcache *regcache)
{
diff --git a/gdb/target.h b/gdb/target.h
index 32c434b..c030ee6 100644
--- a/gdb/target.h
+++ b/gdb/target.h
@@ -922,6 +922,21 @@ struct target_ops
BEGIN (inclusive) to instruction END (exclusive). */
void (*to_insn_history_range) (ULONGEST begin, ULONGEST end, int flags);
+ /* Print a function trace of the recorded execution trace.
+ If SIZE < 0, print abs (SIZE) preceding functions; otherwise, print SIZE
+ succeeding functions. */
+ void (*to_call_history) (int size, int flags);
+
+ /* Print a function trace of the recorded execution trace starting
+ at function FROM.
+ If SIZE < 0, print abs (SIZE) functions before FROM; otherwise, print
+ SIZE functions after FROM. */
+ void (*to_call_history_from) (ULONGEST begin, int size, int flags);
+
+ /* Print a function trace of an execution trace section from function BEGIN
+ (inclusive) to function END (exclusive). */
+ void (*to_call_history_range) (ULONGEST begin, ULONGEST end, int flags);
+
int to_magic;
/* Need sub-structure for target machine related rather than comm related?
*/
@@ -2022,4 +2037,13 @@ extern void target_insn_history_from (ULONGEST from, int size, int flags);
/* See to_insn_history_range. */
extern void target_insn_history_range (ULONGEST begin, ULONGEST end, int flags);
+/* See to_call_history. */
+extern void target_call_history (int size, int flags);
+
+/* See to_call_history_from. */
+extern void target_call_history_from (ULONGEST begin, int size, int flags);
+
+/* See to_call_history_range. */
+extern void target_call_history_range (ULONGEST begin, ULONGEST end, int flags);
+
#endif /* !defined (TARGET_H) */