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* [binutils-gdb] [gdb/cli] Add maint info frame-unwinders
@ 2023-02-10 12:07 Tom de Vries
0 siblings, 0 replies; only message in thread
From: Tom de Vries @ 2023-02-10 12:07 UTC (permalink / raw)
To: gdb-cvs
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=be01687991aa6c8517b3e635b8f13b0bac6a851a
commit be01687991aa6c8517b3e635b8f13b0bac6a851a
Author: Tom de Vries <tdevries@suse.de>
Date: Fri Feb 10 13:07:14 2023 +0100
[gdb/cli] Add maint info frame-unwinders
Add a new command "maint info frame-unwinders":
...
(gdb) help maint info frame-unwinders
List the frame unwinders currently in effect, starting with the highest \
priority.
...
Output for i386:
...
$ gdb -q -batch -ex "set arch i386" -ex "maint info frame-unwinders"
The target architecture is set to "i386".
dummy DUMMY_FRAME
dwarf2 tailcall TAILCALL_FRAME
inline INLINE_FRAME
i386 epilogue NORMAL_FRAME
dwarf2 NORMAL_FRAME
dwarf2 signal SIGTRAMP_FRAME
i386 stack tramp NORMAL_FRAME
i386 sigtramp SIGTRAMP_FRAME
i386 prologue NORMAL_FRAME
...
Output for x86_64:
...
$ gdb -q -batch -ex "set arch i386:x86-64" -ex "maint info frame-unwinders"
The target architecture is set to "i386:x86-64".
dummy DUMMY_FRAME
dwarf2 tailcall TAILCALL_FRAME
inline INLINE_FRAME
python NORMAL_FRAME
amd64 epilogue NORMAL_FRAME
i386 epilogue NORMAL_FRAME
dwarf2 NORMAL_FRAME
dwarf2 signal SIGTRAMP_FRAME
amd64 sigtramp SIGTRAMP_FRAME
amd64 prologue NORMAL_FRAME
i386 stack tramp NORMAL_FRAME
i386 sigtramp SIGTRAMP_FRAME
i386 prologue NORMAL_FRAME
...
Tested on x86_64-linux.
Reviewed-By: Tom Tromey <tom@tromey.com>
Reviewed-By: Eli Zaretskii <eliz@gnu.org>
Diff:
---
gdb/NEWS | 4 ++++
gdb/doc/gdb.texinfo | 4 ++++
gdb/frame-unwind.c | 32 ++++++++++++++++++++++++++++++++
gdb/frame.c | 4 ++--
gdb/frame.h | 4 ++++
5 files changed, 46 insertions(+), 2 deletions(-)
diff --git a/gdb/NEWS b/gdb/NEWS
index 1567cbea9bd..b85923cf80d 100644
--- a/gdb/NEWS
+++ b/gdb/NEWS
@@ -52,6 +52,10 @@ maintenance print record-instruction [ N ]
prints how GDB would undo the N-th previous instruction, and if N is
positive, it prints how GDB will redo the N-th following instruction.
+maintenance info frame-unwinders
+ List the frame unwinders currently in effect, starting with the highest
+ priority.
+
* MI changes
** mi now reports 'no-history' as a stop reason when hitting the end of the
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index eebb6dd422a..7b128053b5a 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -40986,6 +40986,10 @@ with the DWARF frame unwinders enabled.
If DWARF frame unwinders are not supported for a particular target
architecture, then enabling this flag does not cause them to be used.
+@kindex maint info frame-unwinders
+@item maint info frame-unwinders
+List the frame unwinders currently in effect, starting with the highest priority.
+
@kindex maint set worker-threads
@kindex maint show worker-threads
@item maint set worker-threads
diff --git a/gdb/frame-unwind.c b/gdb/frame-unwind.c
index b708c64f967..76601faa479 100644
--- a/gdb/frame-unwind.c
+++ b/gdb/frame-unwind.c
@@ -28,6 +28,7 @@
#include "target.h"
#include "gdbarch.h"
#include "dwarf2/frame-tailcall.h"
+#include "cli/cli-cmds.h"
struct frame_unwind_table_entry
{
@@ -337,3 +338,34 @@ frame_unwind_got_address (frame_info_ptr frame, int regnum,
register_type (gdbarch, regnum), addr);
return reg_val;
}
+
+/* Implement "maintenance info frame-unwinders" command. */
+
+static void
+maintenance_info_frame_unwinders (const char *args, int from_tty)
+{
+ struct gdbarch *gdbarch = target_gdbarch ();
+ struct frame_unwind_table *table = get_frame_unwind_table (gdbarch);
+
+ for (struct frame_unwind_table_entry *entry = table->list; entry != NULL;
+ entry = entry->next)
+ {
+ const char *name = entry->unwinder->name;
+ const char *type = frame_type_str (entry->unwinder->type);
+
+ gdb_printf (gdb_stdout, "%-16s\t%-16s\n", name, type);
+ }
+}
+
+void _initialize_frame_unwind ();
+void
+_initialize_frame_unwind ()
+{
+ /* Add "maint info frame-unwinders". */
+ add_cmd ("frame-unwinders",
+ class_maintenance,
+ maintenance_info_frame_unwinders,
+ _("List the frame unwinders currently in effect, "
+ "starting with the highest priority."),
+ &maintenanceinfolist);
+}
diff --git a/gdb/frame.c b/gdb/frame.c
index 9235a2ceb38..c69a3ea0cb0 100644
--- a/gdb/frame.c
+++ b/gdb/frame.c
@@ -439,9 +439,9 @@ frame_id::to_string () const
return res;
}
-/* Return a string representation of TYPE. */
+/* See frame.h. */
-static const char *
+const char *
frame_type_str (frame_type type)
{
switch (type)
diff --git a/gdb/frame.h b/gdb/frame.h
index 4a99bd660df..6ed8db0af56 100644
--- a/gdb/frame.h
+++ b/gdb/frame.h
@@ -203,6 +203,10 @@ enum frame_type
SENTINEL_FRAME
};
+/* Return a string representation of TYPE. */
+
+extern const char *frame_type_str (frame_type type);
+
/* A wrapper for "frame_info *". frame_info objects are invalidated
whenever reinit_frame_cache is called. This class arranges to
invalidate the pointer when appropriate. This is done to help
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