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https://github.com/darlinghq/darling-gdb.git
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2003-08-09 Andrew Cagney <cagney@redhat.com>
Fix GDB PR cli/926.
* cli/cli-decode.c (add_setshow_uinteger_cmd): New function.
* command.h (add_setshow_uinteger_cmd): Declare.
* frame.c (set_backtrace_cmd): New function.
(show_backtrace_cmd): New function.
* frame.c (_initialize_frame): Replace "set/show
backtrace-below-main" with "set/show backtrace past-main". Add
command "set/show backtrace limit".
(backtrace_past_main): Rename "backtrace_below_main".
(backtrace_limit): New variable.
(get_prev_frame): Update. Check the backtrace_limit.
2003-08-09 Andrew Cagney <cagney@redhat.com>
* gdb.texinfo (Backtrace): Replace "set/show backtrace-below-main"
with "set/show backtrace past-main" and "set/show backtrace
limit".
Index: doc/gdb.texinfo
===================================================================
RCS file: /cvs/src/src/gdb/doc/gdb.texinfo,v
retrieving revision 1.174
diff -u -r1.174 gdb.texinfo
--- doc/gdb.texinfo 8 Aug 2003 01:58:00 -0000 1.174
+++ doc/gdb.texinfo 9 Aug 2003 14:57:10 -0000
@@ -3922,27 +3922,40 @@
value, indicating that your program has stopped at the beginning of the
code for line @code{993} of @code{builtin.c}.
-@kindex set backtrace-below-main
-@kindex show backtrace-below-main
+@kindex set backtrace past-main
+@kindex show backtrace past-main
+@kindex set backtrace limit
+@kindex show backtrace limit
-Most programs have a standard entry point---a place where system libraries
-and startup code transition into user code. For C this is @code{main}.
-When @value{GDBN} finds the entry function in a backtrace it will terminate
-the backtrace, to avoid tracing into highly system-specific (and generally
-uninteresting) code. If you need to examine the startup code, then you can
-change this behavior.
+Most programs have a standard user entry point---a place where system
+libraries and startup code transition into user code. For C this is
+@code{main}. When @value{GDBN} finds the entry function in a backtrace
+it will terminate the backtrace, to avoid tracing into highly
+system-specific (and generally uninteresting) code.
+
+If you need to examine the startup code, or limit the number of levels
+in a backtrace, you can change this behavior:
@table @code
-@item set backtrace-below-main off
+@item set backtrace past-main
+@itemx set backtrace past-main on
+Backtraces will continue past the user entry point.
+
+@item set backtrace past-main off
Backtraces will stop when they encounter the user entry point. This is the
default.
-@item set backtrace-below-main
-@itemx set backtrace-below-main on
-Backtraces will continue past the user entry point to the top of the stack.
+@item show backtrace past-main
+Display the current user entry point backtrace policy.
+
+@item set backtrace limit @var{n}
+@itemx set backtrace limit 0
+@cindex backtrace limit
+Limit the backtrace to @var{n} levels. A value of zero means
+unlimited.
-@item show backtrace-below-main
-Display the current backtrace policy.
+@item show backtrace limit
+Display the current limit on backtrace levels.
@end table
@node Selection
This commit is contained in:
Andrew Cagney
parent
9ebf4acf53
commit
25d29d7093
@ -1,3 +1,17 @@
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2003-08-09 Andrew Cagney <cagney@redhat.com>
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Fix GDB PR cli/926.
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* cli/cli-decode.c (add_setshow_uinteger_cmd): New function.
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* command.h (add_setshow_uinteger_cmd): Declare.
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* frame.c (set_backtrace_cmd): New function.
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(show_backtrace_cmd): New function.
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* frame.c (_initialize_frame): Replace "set/show
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backtrace-below-main" with "set/show backtrace past-main". Add
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command "set/show backtrace limit".
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(backtrace_past_main): Rename "backtrace_below_main".
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(backtrace_limit): New variable.
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(get_prev_frame): Update. Check the backtrace_limit.
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2003-08-09 Andrew Cagney <cagney@redhat.com>
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* defs.h (xstrprintf): Declare.
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@ -448,6 +448,26 @@ add_setshow_boolean_cmd (char *name,
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c->enums = boolean_enums;
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}
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/* Add element named NAME to both the set and show command LISTs (the
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list for set/show or some sublist thereof). CLASS is as in
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add_cmd. VAR is address of the variable which will contain the
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value. SET_DOC and SHOW_DOR are the documentation strings. */
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void
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add_setshow_uinteger_cmd (char *name,
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enum command_class class,
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unsigned int *var, char *set_doc, char *show_doc,
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cmd_sfunc_ftype *set_func,
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cmd_sfunc_ftype *show_func,
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struct cmd_list_element **set_list,
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struct cmd_list_element **show_list)
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{
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add_setshow_cmd_full (name, class, var_uinteger, var,
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set_doc, show_doc,
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set_func, show_func,
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set_list, show_list,
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NULL, NULL);
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}
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/* Where SETCMD has already been added, add the corresponding show
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command to LIST and return a pointer to the added command (not
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necessarily the head of LIST). */
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@ -262,6 +262,16 @@ extern void add_setshow_boolean_cmd (char *name,
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struct cmd_list_element **set_list,
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struct cmd_list_element **show_list);
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extern void add_setshow_uinteger_cmd (char *name,
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enum command_class class,
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unsigned int *var,
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char *set_doc,
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char *show_doc,
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cmd_sfunc_ftype *set_func,
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cmd_sfunc_ftype *show_func,
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struct cmd_list_element **set_list,
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struct cmd_list_element **show_list);
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extern struct cmd_list_element *add_show_from_set (struct cmd_list_element *,
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struct cmd_list_element
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**);
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@ -1,3 +1,9 @@
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2003-08-09 Andrew Cagney <cagney@redhat.com>
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* gdb.texinfo (Backtrace): Replace "set/show backtrace-below-main"
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with "set/show backtrace past-main" and "set/show backtrace
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limit".
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2003-08-08 H.J. Lu <hongjiu.lu@intel.com>
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* Makefile.in (install-info): Support DESTDIR.
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@ -3922,27 +3922,40 @@ The display for frame zero does not begin with a program counter
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value, indicating that your program has stopped at the beginning of the
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code for line @code{993} of @code{builtin.c}.
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@kindex set backtrace-below-main
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@kindex show backtrace-below-main
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@kindex set backtrace past-main
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@kindex show backtrace past-main
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@kindex set backtrace limit
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@kindex show backtrace limit
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Most programs have a standard entry point---a place where system libraries
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and startup code transition into user code. For C this is @code{main}.
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When @value{GDBN} finds the entry function in a backtrace it will terminate
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the backtrace, to avoid tracing into highly system-specific (and generally
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uninteresting) code. If you need to examine the startup code, then you can
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change this behavior.
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Most programs have a standard user entry point---a place where system
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libraries and startup code transition into user code. For C this is
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@code{main}. When @value{GDBN} finds the entry function in a backtrace
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it will terminate the backtrace, to avoid tracing into highly
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system-specific (and generally uninteresting) code.
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If you need to examine the startup code, or limit the number of levels
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in a backtrace, you can change this behavior:
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@table @code
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@item set backtrace-below-main off
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@item set backtrace past-main
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@itemx set backtrace past-main on
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Backtraces will continue past the user entry point.
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@item set backtrace past-main off
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Backtraces will stop when they encounter the user entry point. This is the
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default.
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@item set backtrace-below-main
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@itemx set backtrace-below-main on
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Backtraces will continue past the user entry point to the top of the stack.
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@item show backtrace past-main
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Display the current user entry point backtrace policy.
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@item show backtrace-below-main
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Display the current backtrace policy.
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@item set backtrace limit @var{n}
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@itemx set backtrace limit 0
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@cindex backtrace limit
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Limit the backtrace to @var{n} levels. A value of zero means
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unlimited.
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@item show backtrace limit
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Display the current limit on backtrace levels.
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@end table
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@node Selection
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57
gdb/frame.c
57
gdb/frame.c
@ -135,9 +135,11 @@ struct frame_info
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static int frame_debug;
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/* Flag to indicate whether backtraces should stop at main. */
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/* Flag to indicate whether backtraces should stop at main et.al. */
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static int backtrace_past_main;
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static unsigned int backtrace_limit = UINT_MAX;
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static int backtrace_below_main;
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void
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fprint_frame_id (struct ui_file *file, struct frame_id id)
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@ -1802,7 +1804,7 @@ get_prev_frame (struct frame_info *this_frame)
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gdb_assert (this_frame != NULL);
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if (this_frame->level >= 0
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&& !backtrace_below_main
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&& !backtrace_past_main
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&& inside_main_func (get_frame_pc (this_frame)))
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/* Don't unwind past main(), bug always unwind the sentinel frame.
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Note, this is done _before_ the frame has been marked as
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@ -1814,6 +1816,11 @@ get_prev_frame (struct frame_info *this_frame)
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return NULL;
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}
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if (this_frame->level > backtrace_limit)
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{
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error ("Backtrace limit of %d exceeded", backtrace_limit);
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}
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/* If we're already inside the entry function for the main objfile,
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then it isn't valid. Don't apply this test to a dummy frame -
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dummy frame PC's typically land in the entry func. Don't apply
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@ -2370,18 +2377,39 @@ legacy_frame_p (struct gdbarch *current_gdbarch)
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extern initialize_file_ftype _initialize_frame; /* -Wmissing-prototypes */
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static struct cmd_list_element *set_backtrace_cmdlist;
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static struct cmd_list_element *show_backtrace_cmdlist;
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static void
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set_backtrace_cmd (char *args, int from_tty)
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{
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help_list (set_backtrace_cmdlist, "set backtrace ", -1, gdb_stdout);
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}
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static void
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show_backtrace_cmd (char *args, int from_tty)
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{
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cmd_show_list (show_backtrace_cmdlist, from_tty, "");
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}
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void
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_initialize_frame (void)
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{
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obstack_init (&frame_cache_obstack);
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/* FIXME: cagney/2003-01-19: This command needs a rename. Suggest
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`set backtrace {past,beyond,...}-main'. Also suggest adding `set
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backtrace ...-start' to control backtraces past start. The
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problem with `below' is that it stops the `up' command. */
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add_prefix_cmd ("backtrace", class_maintenance, set_backtrace_cmd, "\
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Set backtrace specific variables.\n\
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Configure backtrace variables such as the backtrace limit",
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&set_backtrace_cmdlist, "set backtrace ",
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0/*allow-unknown*/, &setlist);
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add_prefix_cmd ("backtrace", class_maintenance, show_backtrace_cmd, "\
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Show backtrace specific variables\n\
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Show backtrace variables such as the backtrace limit",
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&show_backtrace_cmdlist, "show backtrace ",
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0/*allow-unknown*/, &showlist);
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add_setshow_boolean_cmd ("backtrace-below-main", class_obscure,
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&backtrace_below_main, "\
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add_setshow_boolean_cmd ("past-main", class_obscure,
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&backtrace_past_main, "\
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Set whether backtraces should continue past \"main\".\n\
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Normally the caller of \"main\" is not of interest, so GDB will terminate\n\
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the backtrace at \"main\". Set this variable if you need to see the rest\n\
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@ -2390,8 +2418,17 @@ Show whether backtraces should continue past \"main\".\n\
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Normally the caller of \"main\" is not of interest, so GDB will terminate\n\
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the backtrace at \"main\". Set this variable if you need to see the rest\n\
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of the stack trace.",
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NULL, NULL, &setlist, &showlist);
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NULL, NULL, &set_backtrace_cmdlist,
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&show_backtrace_cmdlist);
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add_setshow_uinteger_cmd ("limit", class_obscure,
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&backtrace_limit, "\
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Set an upper bound on the number of backtrace levels.\n\
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No more than the specified number of frames can be displayed or examined.\n
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Zero is unlimited.", "\
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Show the upper bound on the number of backtrace levels.",
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NULL, NULL, &set_backtrace_cmdlist,
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&show_backtrace_cmdlist);
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/* Debug this files internals. */
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add_show_from_set (add_set_cmd ("frame", class_maintenance, var_zinteger,
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