* [PATCH v3 0/5] Modernize frame unwinders and add disable feature
@ 2024-05-08 14:54 Guinevere Larsen
2024-05-08 14:54 ` [PATCH v3 1/5] gdb: make gdbarch store a vector of frame unwinders Guinevere Larsen
` (5 more replies)
0 siblings, 6 replies; 9+ messages in thread
From: Guinevere Larsen @ 2024-05-08 14:54 UTC (permalink / raw)
To: gdb-patches; +Cc: Guinevere Larsen
This patch series started with me trying to make it easier to test GDB's
ability to unwind using CFI data, to improve a previous patch I sent to
the list.
The first patch is just a minor change, storing frame unwinders in a
vector instead of through an unwinder table accessible using the
registry system. This isn't required (like I originally thought it was),
but it does make the whole system more readable in my opinion.
Patch 3 has the real meat of the modernization, making GDB use
polymorphism to handle frame unwinders. This is slightly slower than
using function pointers, but much more readable in my opinion.
As for the unwinder classes, they were chosen somewhat arbitrarily,
mostly based on where I found an unwinder and its name.
Despite sending it now, I don't think this patch series should be merged before gdb 15 is branched.
Changes for v3:
* Fixed Linaro CI issue in 32 bit arm
* Fixed the few comments from Eli.
* Documented addition of unwinder class in the oatch that adds it.
Changes for v2:
* Added back the test that checks if GDB can handle a mix of CUs with
and without debuginfo in a single backtrace.
* Fixed all the nitpicks for style.
* Removed FRAME_UNWIND_ prefix when talking about classes
* Thoroughly changed the documentation, to be more readable
Guinevere Larsen (5):
gdb: make gdbarch store a vector of frame unwinders
gdb: add "unwinder class" to frame unwinders
gdb: Migrate frame unwinders to use C++ classes
gdb: introduce ability to disable frame unwinders
gdb/testsuite: Test for a backtrace through object without debuginfo
gdb/NEWS | 11 +
gdb/aarch64-tdep.c | 12 +-
gdb/alpha-mdebug-tdep.c | 6 +-
gdb/alpha-tdep.c | 12 +-
gdb/amd64-obsd-tdep.c | 6 +-
gdb/amd64-tdep.c | 24 +-
gdb/amd64-windows-tdep.c | 6 +-
gdb/amdgpu-tdep.c | 7 +-
gdb/arc-tdep.c | 10 +-
gdb/arch-utils.c | 8 +
gdb/arm-tdep.c | 29 +-
gdb/avr-tdep.c | 5 +-
gdb/bfin-tdep.c | 6 +-
gdb/bpf-tdep.c | 6 +-
gdb/cris-tdep.c | 12 +-
gdb/csky-tdep.c | 10 +-
gdb/doc/gdb.texinfo | 26 +-
gdb/dummy-frame.c | 8 +-
gdb/dummy-frame.h | 2 +-
gdb/dwarf2/frame-tailcall.c | 6 +-
gdb/dwarf2/frame-tailcall.h | 2 +-
gdb/dwarf2/frame.c | 16 +-
gdb/frame-unwind.c | 335 ++++++++++++++----
gdb/frame-unwind.h | 178 +++++++++-
gdb/frame.c | 28 +-
gdb/frv-linux-tdep.c | 6 +-
gdb/frv-tdep.c | 5 +-
gdb/ft32-tdep.c | 6 +-
gdb/gdbarch.c | 3 +
gdb/gdbarch.h | 5 +
gdb/gdbarch.py | 3 +
gdb/h8300-tdep.c | 5 +-
gdb/hppa-linux-tdep.c | 5 +-
gdb/hppa-tdep.c | 17 +-
gdb/i386-obsd-tdep.c | 5 +-
gdb/i386-tdep.c | 30 +-
gdb/ia64-tdep.c | 24 +-
gdb/inline-frame.c | 5 +-
gdb/inline-frame.h | 2 +-
gdb/iq2000-tdep.c | 5 +-
gdb/jit.c | 6 +-
gdb/lm32-tdep.c | 5 +-
gdb/loongarch-tdep.c | 7 +-
gdb/m32c-tdep.c | 5 +-
gdb/m32r-linux-tdep.c | 5 +-
gdb/m32r-tdep.c | 5 +-
gdb/m68hc11-tdep.c | 5 +-
gdb/m68k-linux-tdep.c | 6 +-
gdb/m68k-tdep.c | 6 +-
gdb/mep-tdep.c | 5 +-
gdb/microblaze-tdep.c | 6 +-
gdb/mips-sde-tdep.c | 6 +-
gdb/mips-tdep.c | 24 +-
gdb/mn10300-tdep.c | 5 +-
gdb/moxie-tdep.c | 5 +-
gdb/msp430-tdep.c | 5 +-
gdb/nds32-tdep.c | 14 +-
gdb/nios2-tdep.c | 12 +-
gdb/or1k-tdep.c | 7 +-
gdb/ppc-fbsd-tdep.c | 5 +-
gdb/ppc-obsd-tdep.c | 5 +-
gdb/python/py-unwind.c | 50 ++-
gdb/record-btrace.c | 12 +-
gdb/record.h | 4 +-
gdb/riscv-tdep.c | 8 +-
gdb/rl78-tdep.c | 6 +-
gdb/rs6000-aix-tdep.c | 5 +-
gdb/rs6000-tdep.c | 12 +-
gdb/rx-tdep.c | 10 +-
gdb/s12z-tdep.c | 7 +-
gdb/s390-linux-tdep.c | 5 +-
gdb/s390-tdep.c | 10 +-
gdb/sentinel-frame.c | 8 +-
gdb/sentinel-frame.h | 2 +-
gdb/sh-tdep.c | 11 +-
gdb/sparc-netbsd-tdep.c | 6 +-
gdb/sparc-obsd-tdep.c | 6 +-
gdb/sparc-sol2-tdep.c | 6 +-
gdb/sparc-tdep.c | 6 +-
gdb/sparc64-fbsd-tdep.c | 6 +-
gdb/sparc64-netbsd-tdep.c | 6 +-
gdb/sparc64-obsd-tdep.c | 12 +-
gdb/sparc64-sol2-tdep.c | 6 +-
gdb/sparc64-tdep.c | 6 +-
.../backtrace-through-cu-nodebug-caller.c | 28 ++
.../backtrace-through-cu-nodebug-main.c | 32 ++
.../gdb.base/backtrace-through-cu-nodebug.exp | 87 +++++
gdb/testsuite/gdb.base/frame-unwind-disable.c | 21 ++
.../gdb.base/frame-unwind-disable.exp | 114 ++++++
gdb/tic6x-tdep.c | 12 +-
gdb/tilegx-tdep.c | 5 +-
gdb/tramp-frame.c | 58 ++-
gdb/v850-tdep.c | 5 +-
gdb/vax-tdep.c | 6 +-
gdb/windows-tdep.c | 33 +-
gdb/windows-tdep.h | 16 +-
gdb/xstormy16-tdep.c | 5 +-
gdb/xtensa-tdep.c | 7 +-
gdb/z80-tdep.c | 7 +-
99 files changed, 1247 insertions(+), 445 deletions(-)
create mode 100644 gdb/testsuite/gdb.base/backtrace-through-cu-nodebug-caller.c
create mode 100644 gdb/testsuite/gdb.base/backtrace-through-cu-nodebug-main.c
create mode 100644 gdb/testsuite/gdb.base/backtrace-through-cu-nodebug.exp
create mode 100644 gdb/testsuite/gdb.base/frame-unwind-disable.c
create mode 100644 gdb/testsuite/gdb.base/frame-unwind-disable.exp
--
2.45.0
^ permalink raw reply [flat|nested] 9+ messages in thread
* [PATCH v3 1/5] gdb: make gdbarch store a vector of frame unwinders
2024-05-08 14:54 [PATCH v3 0/5] Modernize frame unwinders and add disable feature Guinevere Larsen
@ 2024-05-08 14:54 ` Guinevere Larsen
2024-05-08 14:54 ` [PATCH v3 2/5] gdb: add "unwinder class" to " Guinevere Larsen
` (4 subsequent siblings)
5 siblings, 0 replies; 9+ messages in thread
From: Guinevere Larsen @ 2024-05-08 14:54 UTC (permalink / raw)
To: gdb-patches; +Cc: Guinevere Larsen
Before this commit, all frame unwinders would be stored in the obstack
of a gdbarch and accessed by using the registry system. This made for
unwieldy code, and unnecessarily complex logic in the frame_unwinder
implementation, along with making frame_unwind structs be unable to have
non-trivial destructors.
Seeing as a future patch of this series wants to refactor the
frame_unwind struct to use inheritance, and we'd like to not restrict
the future derived classes on what destructors are allowed. In
preparation for that change, this commit adds an std::vector to gdbarch
to store the unwinders in.
There should be no user-visible changes.
---
gdb/arch-utils.c | 8 ++++
gdb/frame-unwind.c | 111 +++++++++++++++++----------------------------
gdb/gdbarch.c | 3 ++
gdb/gdbarch.h | 5 ++
gdb/gdbarch.py | 3 ++
5 files changed, 61 insertions(+), 69 deletions(-)
diff --git a/gdb/arch-utils.c b/gdb/arch-utils.c
index 78145656b8d..bbb1edf5592 100644
--- a/gdb/arch-utils.c
+++ b/gdb/arch-utils.c
@@ -1219,6 +1219,14 @@ obstack *gdbarch_obstack (gdbarch *arch)
/* See gdbarch.h. */
+std::vector<const frame_unwind *>&
+gdbarch_get_unwinder_list (struct gdbarch *arch)
+{
+ return arch->unwinders;
+}
+
+/* See gdbarch.h. */
+
char *
gdbarch_obstack_strdup (struct gdbarch *arch, const char *string)
{
diff --git a/gdb/frame-unwind.c b/gdb/frame-unwind.c
index e5f108d3257..0bb47deea3a 100644
--- a/gdb/frame-unwind.c
+++ b/gdb/frame-unwind.c
@@ -31,49 +31,16 @@
#include "cli/cli-cmds.h"
#include "inferior.h"
-struct frame_unwind_table_entry
-{
- const struct frame_unwind *unwinder;
- struct frame_unwind_table_entry *next;
-};
-
-struct frame_unwind_table
-{
- struct frame_unwind_table_entry *list = nullptr;
- /* The head of the OSABI part of the search list. */
- struct frame_unwind_table_entry **osabi_head = nullptr;
-};
+/* If an unwinder should be prepended to the list, this is the
+ index in which it should be inserted. */
+static int osabi_start = -1;
-static const registry<gdbarch>::key<struct frame_unwind_table>
- frame_unwind_data;
-
-/* A helper function to add an unwinder to a list. LINK says where to
- install the new unwinder. The new link is returned. */
-
-static struct frame_unwind_table_entry **
-add_unwinder (struct obstack *obstack, const struct frame_unwind *unwinder,
- struct frame_unwind_table_entry **link)
-{
- *link = OBSTACK_ZALLOC (obstack, struct frame_unwind_table_entry);
- (*link)->unwinder = unwinder;
- return &(*link)->next;
-}
-
-static struct frame_unwind_table *
-get_frame_unwind_table (struct gdbarch *gdbarch)
+/* Start the table out with a few default sniffers. OSABI code
+ can't override this. */
+static void
+initialize_frame_unwind_table (std::vector<const frame_unwind *>& table)
{
- struct frame_unwind_table *table = frame_unwind_data.get (gdbarch);
- if (table != nullptr)
- return table;
-
- table = new frame_unwind_table;
-
- /* Start the table out with a few default sniffers. OSABI code
- can't override this. */
- struct frame_unwind_table_entry **link = &table->list;
-
- struct obstack *obstack = gdbarch_obstack (gdbarch);
- link = add_unwinder (obstack, &dummy_frame_unwind, link);
+ table.push_back (&dummy_frame_unwind);
/* The DWARF tailcall sniffer must come before the inline sniffer.
Otherwise, we can end up in a situation where a DWARF frame finds
tailcall information, but then the inline sniffer claims a frame
@@ -81,12 +48,22 @@ get_frame_unwind_table (struct gdbarch *gdbarch)
safe to do always because the tailcall sniffer can only ever be
activated if the newer frame was created using the DWARF
unwinder, and it also found tailcall information. */
- link = add_unwinder (obstack, &dwarf2_tailcall_frame_unwind, link);
- link = add_unwinder (obstack, &inline_frame_unwind, link);
+ table.push_back (&dwarf2_tailcall_frame_unwind);
+ table.push_back (&inline_frame_unwind);
/* The insertion point for OSABI sniffers. */
- table->osabi_head = link;
- frame_unwind_data.set (gdbarch, table);
+ osabi_start = table.size ();
+}
+
+/* This function call retrieves the list of frame unwinders available in
+ GDBARCH. If this list is empty, it is initialized before being
+ returned. */
+static std::vector<const frame_unwind *>&
+get_frame_unwind_table (struct gdbarch *gdbarch)
+{
+ std::vector<const frame_unwind *>& table = gdbarch_get_unwinder_list (gdbarch);
+ if (table.size () == 0)
+ initialize_frame_unwind_table (table);
return table;
}
@@ -95,27 +72,25 @@ void
frame_unwind_prepend_unwinder (struct gdbarch *gdbarch,
const struct frame_unwind *unwinder)
{
- struct frame_unwind_table *table = get_frame_unwind_table (gdbarch);
- struct frame_unwind_table_entry *entry;
-
- /* Insert the new entry at the start of the list. */
- entry = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct frame_unwind_table_entry);
- entry->unwinder = unwinder;
- entry->next = (*table->osabi_head);
- (*table->osabi_head) = entry;
+ std::vector<const frame_unwind *>& table = get_frame_unwind_table (gdbarch);
+
+ gdb_assert (osabi_start >= 0);
+
+ table.push_back (unwinder);
+
+ /* Bubble the new entry up to where new unwinders are allowed to be
+ inserterd. */
+ for (int i = table.size() - 1; i > osabi_start; i--)
+ std::swap(table[i], table[i-1]);
}
void
frame_unwind_append_unwinder (struct gdbarch *gdbarch,
const struct frame_unwind *unwinder)
{
- struct frame_unwind_table *table = get_frame_unwind_table (gdbarch);
- struct frame_unwind_table_entry **ip;
+ std::vector<const frame_unwind *>& table = get_frame_unwind_table (gdbarch);
- /* Find the end of the list and insert the new entry there. */
- for (ip = table->osabi_head; (*ip) != NULL; ip = &(*ip)->next);
- (*ip) = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct frame_unwind_table_entry);
- (*ip)->unwinder = unwinder;
+ table.push_back (unwinder);
}
/* Call SNIFFER from UNWINDER. If it succeeded set UNWINDER for
@@ -188,9 +163,6 @@ frame_unwind_find_by_frame (const frame_info_ptr &this_frame, void **this_cache)
FRAME_SCOPED_DEBUG_ENTER_EXIT;
frame_debug_printf ("this_frame=%d", frame_relative_level (this_frame));
- struct gdbarch *gdbarch = get_frame_arch (this_frame);
- struct frame_unwind_table *table = get_frame_unwind_table (gdbarch);
- struct frame_unwind_table_entry *entry;
const struct frame_unwind *unwinder_from_target;
unwinder_from_target = target_get_unwinder ();
@@ -205,8 +177,10 @@ frame_unwind_find_by_frame (const frame_info_ptr &this_frame, void **this_cache)
unwinder_from_target))
return;
- for (entry = table->list; entry != NULL; entry = entry->next)
- if (frame_unwind_try_unwinder (this_frame, this_cache, entry->unwinder))
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
+ std::vector<const frame_unwind *> table = get_frame_unwind_table (gdbarch);
+ for (auto unwinder: table)
+ if (frame_unwind_try_unwinder (this_frame, this_cache, unwinder))
return;
internal_error (_("frame_unwind_find_by_frame failed"));
@@ -347,7 +321,7 @@ static void
maintenance_info_frame_unwinders (const char *args, int from_tty)
{
gdbarch *gdbarch = current_inferior ()->arch ();
- struct frame_unwind_table *table = get_frame_unwind_table (gdbarch);
+ std::vector<const frame_unwind *> table = get_frame_unwind_table (gdbarch);
ui_out *uiout = current_uiout;
ui_out_emit_table table_emitter (uiout, 2, -1, "FrameUnwinders");
@@ -355,11 +329,10 @@ maintenance_info_frame_unwinders (const char *args, int from_tty)
uiout->table_header (25, ui_left, "type", "Type");
uiout->table_body ();
- for (struct frame_unwind_table_entry *entry = table->list; entry != NULL;
- entry = entry->next)
+ for (const struct frame_unwind *unwinder: table)
{
- const char *name = entry->unwinder->name;
- const char *type = frame_type_str (entry->unwinder->type);
+ const char *name = unwinder->name;
+ const char *type = frame_type_str (unwinder->type);
ui_out_emit_list tuple_emitter (uiout, nullptr);
uiout->field_string ("name", name);
diff --git a/gdb/gdbarch.c b/gdb/gdbarch.c
index 2d92f604c49..e5d35f33826 100644
--- a/gdb/gdbarch.c
+++ b/gdb/gdbarch.c
@@ -27,6 +27,7 @@
/* Maintain the struct gdbarch object. */
+#include <vector>
struct gdbarch
{
/* Has this architecture been fully initialized? */
@@ -36,6 +37,8 @@ struct gdbarch
auto_obstack obstack;
/* Registry. */
registry<gdbarch> registry_fields;
+ /* list of frame unwinders. */
+ std::vector<const frame_unwind *> unwinders;
/* basic architectural information. */
const struct bfd_arch_info * bfd_arch_info;
diff --git a/gdb/gdbarch.h b/gdb/gdbarch.h
index 77d3406779f..1434d61e600 100644
--- a/gdb/gdbarch.h
+++ b/gdb/gdbarch.h
@@ -30,6 +30,7 @@
#include "displaced-stepping.h"
#include "gdbsupport/gdb-checked-static-cast.h"
#include "registry.h"
+#include "frame-unwind.h"
struct floatformat;
struct ui_file;
@@ -310,6 +311,10 @@ extern obstack *gdbarch_obstack (gdbarch *arch);
#define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) obstack_zalloc<TYPE> (gdbarch_obstack ((GDBARCH)))
+/* Return the vector of unwinders stored in a gdbarch object. */
+
+std::vector<const frame_unwind*>& gdbarch_get_unwinder_list (struct gdbarch *arch);
+
/* Duplicate STRING, returning an equivalent string that's allocated on the
obstack associated with GDBARCH. The string is freed when the corresponding
architecture is also freed. */
diff --git a/gdb/gdbarch.py b/gdb/gdbarch.py
index 4b4db667ca4..bff66cc39d3 100755
--- a/gdb/gdbarch.py
+++ b/gdb/gdbarch.py
@@ -125,6 +125,7 @@ with open("gdbarch.c", "w") as f:
print(file=f)
print("/* Maintain the struct gdbarch object. */", file=f)
print(file=f)
+ print("#include <vector>", file=f)
#
# The struct definition body.
#
@@ -137,6 +138,8 @@ with open("gdbarch.c", "w") as f:
print(" auto_obstack obstack;", file=f)
print(" /* Registry. */", file=f)
print(" registry<gdbarch> registry_fields;", file=f)
+ print(" /* list of frame unwinders. */", file=f)
+ print(" std::vector<const frame_unwind *> unwinders;", file=f)
print(file=f)
print(" /* basic architectural information. */", file=f)
for c in filter(info, components):
--
2.45.0
^ permalink raw reply [flat|nested] 9+ messages in thread
* [PATCH v3 2/5] gdb: add "unwinder class" to frame unwinders
2024-05-08 14:54 [PATCH v3 0/5] Modernize frame unwinders and add disable feature Guinevere Larsen
2024-05-08 14:54 ` [PATCH v3 1/5] gdb: make gdbarch store a vector of frame unwinders Guinevere Larsen
@ 2024-05-08 14:54 ` Guinevere Larsen
[not found] ` <86zft088sm.fsf@gnu.org>
2024-05-08 14:54 ` [PATCH v3 3/5] gdb: Migrate frame unwinders to use C++ classes Guinevere Larsen
` (3 subsequent siblings)
5 siblings, 1 reply; 9+ messages in thread
From: Guinevere Larsen @ 2024-05-08 14:54 UTC (permalink / raw)
To: gdb-patches; +Cc: Guinevere Larsen
A future patch will add a way to disable certain unwinders based on
different characteristics. This patch aims to make it more convenient
to disable related unwinders in bulk, such as architecture specific
ones, by indentifying all unwinders by which part of the code adds it.
The classes, and explanations, are as follows:
* GDB: An internal unwinder, added by GDB core, such as the unwinder
for dummy frames;
* EXTENSION: Unwinders added by extension languages;
* DEBUGINFO: Unwinders installed by the debug info reader;
* ARCH: Unwinders installed by the architecture specific code.
---
gdb/NEWS | 4 ++++
gdb/aarch64-tdep.c | 2 ++
gdb/alpha-mdebug-tdep.c | 1 +
gdb/alpha-tdep.c | 2 ++
gdb/amd64-obsd-tdep.c | 1 +
gdb/amd64-tdep.c | 4 ++++
gdb/amd64-windows-tdep.c | 1 +
gdb/amdgpu-tdep.c | 1 +
gdb/arc-tdep.c | 2 ++
gdb/arm-tdep.c | 5 +++++
gdb/avr-tdep.c | 1 +
gdb/bfin-tdep.c | 1 +
gdb/bpf-tdep.c | 1 +
gdb/cris-tdep.c | 2 ++
gdb/csky-tdep.c | 2 ++
gdb/doc/gdb.texinfo | 2 +-
gdb/dummy-frame.c | 1 +
gdb/dwarf2/frame-tailcall.c | 1 +
gdb/dwarf2/frame.c | 2 ++
gdb/frame-unwind.c | 25 ++++++++++++++++++++++++-
gdb/frame-unwind.h | 17 +++++++++++++++++
gdb/frv-linux-tdep.c | 1 +
gdb/frv-tdep.c | 1 +
gdb/ft32-tdep.c | 1 +
gdb/h8300-tdep.c | 1 +
gdb/hppa-linux-tdep.c | 1 +
gdb/hppa-tdep.c | 3 +++
gdb/i386-obsd-tdep.c | 1 +
gdb/i386-tdep.c | 5 +++++
gdb/ia64-tdep.c | 4 ++++
gdb/inline-frame.c | 1 +
gdb/iq2000-tdep.c | 1 +
gdb/jit.c | 1 +
gdb/lm32-tdep.c | 1 +
gdb/loongarch-tdep.c | 1 +
gdb/m32c-tdep.c | 1 +
gdb/m32r-linux-tdep.c | 1 +
gdb/m32r-tdep.c | 1 +
gdb/m68hc11-tdep.c | 1 +
gdb/m68k-linux-tdep.c | 1 +
gdb/m68k-tdep.c | 1 +
gdb/mep-tdep.c | 1 +
gdb/microblaze-tdep.c | 1 +
gdb/mips-sde-tdep.c | 1 +
gdb/mips-tdep.c | 4 ++++
gdb/mn10300-tdep.c | 1 +
gdb/moxie-tdep.c | 1 +
gdb/msp430-tdep.c | 1 +
gdb/nds32-tdep.c | 2 ++
gdb/nios2-tdep.c | 2 ++
gdb/or1k-tdep.c | 1 +
gdb/ppc-fbsd-tdep.c | 1 +
gdb/ppc-obsd-tdep.c | 1 +
gdb/python/py-unwind.c | 1 +
gdb/record-btrace.c | 2 ++
gdb/riscv-tdep.c | 1 +
gdb/rl78-tdep.c | 1 +
gdb/rs6000-aix-tdep.c | 1 +
gdb/rs6000-tdep.c | 2 ++
gdb/rx-tdep.c | 2 ++
gdb/s12z-tdep.c | 1 +
gdb/s390-linux-tdep.c | 1 +
gdb/s390-tdep.c | 2 ++
gdb/sentinel-frame.c | 1 +
gdb/sh-tdep.c | 2 ++
gdb/sparc-netbsd-tdep.c | 1 +
gdb/sparc-obsd-tdep.c | 1 +
gdb/sparc-sol2-tdep.c | 1 +
gdb/sparc-tdep.c | 1 +
gdb/sparc64-fbsd-tdep.c | 1 +
gdb/sparc64-netbsd-tdep.c | 1 +
gdb/sparc64-obsd-tdep.c | 2 ++
gdb/sparc64-sol2-tdep.c | 1 +
gdb/sparc64-tdep.c | 1 +
gdb/tic6x-tdep.c | 2 ++
gdb/tilegx-tdep.c | 1 +
gdb/tramp-frame.c | 1 +
gdb/v850-tdep.c | 1 +
gdb/vax-tdep.c | 1 +
gdb/xstormy16-tdep.c | 1 +
gdb/xtensa-tdep.c | 1 +
gdb/z80-tdep.c | 1 +
82 files changed, 158 insertions(+), 2 deletions(-)
diff --git a/gdb/NEWS b/gdb/NEWS
index 050f6f96e62..679295f0507 100644
--- a/gdb/NEWS
+++ b/gdb/NEWS
@@ -32,6 +32,10 @@ maintenance info line-table
if the line is considered the start of the epilgoue, and thus a point at
which the frame can be considered destroyed.
+mainenance info frame-unwinders
+ Add a CLASS column to the output. This class is a somewhat arbitrary
+ grouping of unwinders, based on which area of GDB adds the unwinder.
+
set unwindonsignal on|off
show unwindonsignal
These commands are now aliases for the new set/show unwind-on-signal.
diff --git a/gdb/aarch64-tdep.c b/gdb/aarch64-tdep.c
index 8d0553f3d7c..fb431b15334 100644
--- a/gdb/aarch64-tdep.c
+++ b/gdb/aarch64-tdep.c
@@ -1208,6 +1208,7 @@ static frame_unwind aarch64_prologue_unwind =
{
"aarch64 prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
aarch64_prologue_frame_unwind_stop_reason,
aarch64_prologue_this_id,
aarch64_prologue_prev_register,
@@ -1303,6 +1304,7 @@ static frame_unwind aarch64_stub_unwind =
{
"aarch64 stub",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
aarch64_stub_frame_unwind_stop_reason,
aarch64_stub_this_id,
aarch64_prologue_prev_register,
diff --git a/gdb/alpha-mdebug-tdep.c b/gdb/alpha-mdebug-tdep.c
index abded2ac192..b087afabae7 100644
--- a/gdb/alpha-mdebug-tdep.c
+++ b/gdb/alpha-mdebug-tdep.c
@@ -334,6 +334,7 @@ static const struct frame_unwind alpha_mdebug_frame_unwind =
{
"alpha mdebug",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
alpha_mdebug_frame_this_id,
alpha_mdebug_frame_prev_register,
diff --git a/gdb/alpha-tdep.c b/gdb/alpha-tdep.c
index fa042b252b0..f55bf2c8661 100644
--- a/gdb/alpha-tdep.c
+++ b/gdb/alpha-tdep.c
@@ -1011,6 +1011,7 @@ static const struct frame_unwind alpha_sigtramp_frame_unwind =
{
"alpha sigtramp",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
alpha_sigtramp_frame_this_id,
alpha_sigtramp_frame_prev_register,
@@ -1430,6 +1431,7 @@ static const struct frame_unwind alpha_heuristic_frame_unwind =
{
"alpha prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
alpha_heuristic_frame_this_id,
alpha_heuristic_frame_prev_register,
diff --git a/gdb/amd64-obsd-tdep.c b/gdb/amd64-obsd-tdep.c
index 5b1e77b3e86..5359959e3bb 100644
--- a/gdb/amd64-obsd-tdep.c
+++ b/gdb/amd64-obsd-tdep.c
@@ -409,6 +409,7 @@ static const struct frame_unwind amd64obsd_trapframe_unwind =
which really is not what we want here. */
"amd64 openbsd trap",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
amd64obsd_trapframe_this_id,
amd64obsd_trapframe_prev_register,
diff --git a/gdb/amd64-tdep.c b/gdb/amd64-tdep.c
index df6b882a3fb..d839335d9fa 100644
--- a/gdb/amd64-tdep.c
+++ b/gdb/amd64-tdep.c
@@ -2682,6 +2682,7 @@ static const struct frame_unwind amd64_frame_unwind =
{
"amd64 prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
amd64_frame_unwind_stop_reason,
amd64_frame_this_id,
amd64_frame_prev_register,
@@ -2828,6 +2829,7 @@ static const struct frame_unwind amd64_sigtramp_frame_unwind =
{
"amd64 sigtramp",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_ARCH,
amd64_sigtramp_frame_unwind_stop_reason,
amd64_sigtramp_frame_this_id,
amd64_sigtramp_frame_prev_register,
@@ -3020,6 +3022,7 @@ static const struct frame_unwind amd64_epilogue_override_frame_unwind =
{
"amd64 epilogue override",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
amd64_epilogue_frame_unwind_stop_reason,
amd64_epilogue_frame_this_id,
amd64_frame_prev_register,
@@ -3031,6 +3034,7 @@ static const struct frame_unwind amd64_epilogue_frame_unwind =
{
"amd64 epilogue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
amd64_epilogue_frame_unwind_stop_reason,
amd64_epilogue_frame_this_id,
amd64_frame_prev_register,
diff --git a/gdb/amd64-windows-tdep.c b/gdb/amd64-windows-tdep.c
index 9636201d13a..74bea7370fe 100644
--- a/gdb/amd64-windows-tdep.c
+++ b/gdb/amd64-windows-tdep.c
@@ -1186,6 +1186,7 @@ static const struct frame_unwind amd64_windows_frame_unwind =
{
"amd64 windows",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
&amd64_windows_frame_this_id,
&amd64_windows_frame_prev_register,
diff --git a/gdb/amdgpu-tdep.c b/gdb/amdgpu-tdep.c
index 49996aeefc3..679098a778f 100644
--- a/gdb/amdgpu-tdep.c
+++ b/gdb/amdgpu-tdep.c
@@ -894,6 +894,7 @@ amdgpu_frame_prev_register (const frame_info_ptr &this_frame, void **this_cache,
static const frame_unwind amdgpu_frame_unwind = {
"amdgpu",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
amdgpu_frame_this_id,
amdgpu_frame_prev_register,
diff --git a/gdb/arc-tdep.c b/gdb/arc-tdep.c
index 9491107ecff..e96d186246f 100644
--- a/gdb/arc-tdep.c
+++ b/gdb/arc-tdep.c
@@ -1913,6 +1913,7 @@ arc_sigtramp_frame_sniffer (const struct frame_unwind *self,
static const struct frame_unwind arc_frame_unwind = {
"arc prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
arc_frame_this_id,
arc_frame_prev_register,
@@ -1929,6 +1930,7 @@ static const struct frame_unwind arc_frame_unwind = {
static const struct frame_unwind arc_sigtramp_frame_unwind = {
"arc sigtramp",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
arc_sigtramp_frame_this_id,
arc_sigtramp_frame_prev_register,
diff --git a/gdb/arm-tdep.c b/gdb/arm-tdep.c
index f36ce631a08..5c1f50cd0b8 100644
--- a/gdb/arm-tdep.c
+++ b/gdb/arm-tdep.c
@@ -2472,6 +2472,7 @@ arm_prologue_prev_register (const frame_info_ptr &this_frame,
static frame_unwind arm_prologue_unwind = {
"arm prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
arm_prologue_unwind_stop_reason,
arm_prologue_this_id,
arm_prologue_prev_register,
@@ -3191,6 +3192,7 @@ arm_exidx_unwind_sniffer (const struct frame_unwind *self,
struct frame_unwind arm_exidx_unwind = {
"arm exidx",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
arm_prologue_this_id,
arm_prologue_prev_register,
@@ -3301,6 +3303,7 @@ static const struct frame_unwind arm_epilogue_frame_unwind =
{
"arm epilogue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
arm_epilogue_frame_this_id,
arm_epilogue_frame_prev_register,
@@ -3430,6 +3433,7 @@ arm_stub_unwind_sniffer (const struct frame_unwind *self,
struct frame_unwind arm_stub_unwind = {
"arm stub",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
arm_stub_this_id,
arm_prologue_prev_register,
@@ -3956,6 +3960,7 @@ struct frame_unwind arm_m_exception_unwind =
{
"arm m exception lockup sec_fnc",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_ARCH,
arm_m_exception_frame_unwind_stop_reason,
arm_m_exception_this_id,
arm_m_exception_prev_register,
diff --git a/gdb/avr-tdep.c b/gdb/avr-tdep.c
index 1e39f851bac..569ca94abaa 100644
--- a/gdb/avr-tdep.c
+++ b/gdb/avr-tdep.c
@@ -1158,6 +1158,7 @@ avr_frame_prev_register (const frame_info_ptr &this_frame,
static const struct frame_unwind avr_frame_unwind = {
"avr prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
avr_frame_this_id,
avr_frame_prev_register,
diff --git a/gdb/bfin-tdep.c b/gdb/bfin-tdep.c
index b89b7dfa6d8..739d13ff6c9 100644
--- a/gdb/bfin-tdep.c
+++ b/gdb/bfin-tdep.c
@@ -376,6 +376,7 @@ static const struct frame_unwind bfin_frame_unwind =
{
"bfin prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
bfin_frame_this_id,
bfin_frame_prev_register,
diff --git a/gdb/bpf-tdep.c b/gdb/bpf-tdep.c
index 79a442068b5..1f53d63c982 100644
--- a/gdb/bpf-tdep.c
+++ b/gdb/bpf-tdep.c
@@ -185,6 +185,7 @@ static const struct frame_unwind bpf_frame_unwind =
{
"bpf prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
bpf_frame_unwind_stop_reason,
bpf_frame_this_id,
bpf_frame_prev_register,
diff --git a/gdb/cris-tdep.c b/gdb/cris-tdep.c
index 4c8ae77cc86..6af9f52d6af 100644
--- a/gdb/cris-tdep.c
+++ b/gdb/cris-tdep.c
@@ -439,6 +439,7 @@ static const struct frame_unwind cris_sigtramp_frame_unwind =
{
"cris sigtramp",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
cris_sigtramp_frame_this_id,
cris_sigtramp_frame_prev_register,
@@ -904,6 +905,7 @@ static const struct frame_unwind cris_frame_unwind =
{
"cris prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
cris_frame_this_id,
cris_frame_prev_register,
diff --git a/gdb/csky-tdep.c b/gdb/csky-tdep.c
index 1b6c08eb730..57a07a3c36b 100644
--- a/gdb/csky-tdep.c
+++ b/gdb/csky-tdep.c
@@ -2162,6 +2162,7 @@ csky_frame_prev_register (const frame_info_ptr &this_frame,
static const struct frame_unwind csky_unwind_cache = {
"cski prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
csky_frame_this_id,
csky_frame_prev_register,
@@ -2296,6 +2297,7 @@ csky_stub_prev_register (const frame_info_ptr &this_frame,
static frame_unwind csky_stub_unwind = {
"csky stub",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
csky_stub_this_id,
csky_stub_prev_register,
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index 61f91ef4ad6..3fc0fafa3cd 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -42094,7 +42094,7 @@ 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.
+List the frame unwinders currently in effect, starting with the highest priority. This also lists the unwinder class, which is mostly defined by which area of @value{GDBN} uses it.
@kindex maint set worker-threads
@kindex maint show worker-threads
diff --git a/gdb/dummy-frame.c b/gdb/dummy-frame.c
index 9f540d02f1a..e7de15b5c4d 100644
--- a/gdb/dummy-frame.c
+++ b/gdb/dummy-frame.c
@@ -379,6 +379,7 @@ const struct frame_unwind dummy_frame_unwind =
{
"dummy",
DUMMY_FRAME,
+ FRAME_UNWIND_GDB,
default_frame_unwind_stop_reason,
dummy_frame_this_id,
dummy_frame_prev_register,
diff --git a/gdb/dwarf2/frame-tailcall.c b/gdb/dwarf2/frame-tailcall.c
index bcbe41f7933..45ba3a70262 100644
--- a/gdb/dwarf2/frame-tailcall.c
+++ b/gdb/dwarf2/frame-tailcall.c
@@ -473,6 +473,7 @@ const struct frame_unwind dwarf2_tailcall_frame_unwind =
{
"dwarf2 tailcall",
TAILCALL_FRAME,
+ FRAME_UNWIND_DEBUGINFO,
default_frame_unwind_stop_reason,
tailcall_frame_this_id,
tailcall_frame_prev_register,
diff --git a/gdb/dwarf2/frame.c b/gdb/dwarf2/frame.c
index 9ebf3ac4ac4..7bbe6cab22d 100644
--- a/gdb/dwarf2/frame.c
+++ b/gdb/dwarf2/frame.c
@@ -1343,6 +1343,7 @@ static const struct frame_unwind dwarf2_frame_unwind =
{
"dwarf2",
NORMAL_FRAME,
+ FRAME_UNWIND_DEBUGINFO,
dwarf2_frame_unwind_stop_reason,
dwarf2_frame_this_id,
dwarf2_frame_prev_register,
@@ -1355,6 +1356,7 @@ static const struct frame_unwind dwarf2_signal_frame_unwind =
{
"dwarf2 signal",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_DEBUGINFO,
dwarf2_frame_unwind_stop_reason,
dwarf2_frame_this_id,
dwarf2_frame_prev_register,
diff --git a/gdb/frame-unwind.c b/gdb/frame-unwind.c
index 0bb47deea3a..d867f0e152d 100644
--- a/gdb/frame-unwind.c
+++ b/gdb/frame-unwind.c
@@ -31,10 +31,22 @@
#include "cli/cli-cmds.h"
#include "inferior.h"
+#include <map>
+
/* If an unwinder should be prepended to the list, this is the
index in which it should be inserted. */
static int osabi_start = -1;
+/* Conversion list between the enum for frame_unwind_class and
+ string. */
+static std::map<enum frame_unwind_class, const char *> unwind_class_conversion =
+{
+ {FRAME_UNWIND_GDB, "GDB"},
+ {FRAME_UNWIND_ARCH, "ARCH"},
+ {FRAME_UNWIND_EXTENSION, "EXTENSION"},
+ {FRAME_UNWIND_DEBUGINFO, "DEBUGINFO"},
+};
+
/* Start the table out with a few default sniffers. OSABI code
can't override this. */
static void
@@ -68,6 +80,14 @@ get_frame_unwind_table (struct gdbarch *gdbarch)
return table;
}
+static const char *
+frame_unwinder_class_str (frame_unwind_class uclass)
+{
+ auto location = unwind_class_conversion.find (uclass);
+ gdb_assert (location != unwind_class_conversion.end ());
+ return location->second;
+}
+
void
frame_unwind_prepend_unwinder (struct gdbarch *gdbarch,
const struct frame_unwind *unwinder)
@@ -324,19 +344,22 @@ maintenance_info_frame_unwinders (const char *args, int from_tty)
std::vector<const frame_unwind *> table = get_frame_unwind_table (gdbarch);
ui_out *uiout = current_uiout;
- ui_out_emit_table table_emitter (uiout, 2, -1, "FrameUnwinders");
+ ui_out_emit_table table_emitter (uiout, 3, -1, "FrameUnwinders");
uiout->table_header (27, ui_left, "name", "Name");
uiout->table_header (25, ui_left, "type", "Type");
+ uiout->table_header (9, ui_left, "class", "Class");
uiout->table_body ();
for (const struct frame_unwind *unwinder: table)
{
const char *name = unwinder->name;
const char *type = frame_type_str (unwinder->type);
+ const char *uclass = frame_unwinder_class_str (unwinder->unwinder_class);
ui_out_emit_list tuple_emitter (uiout, nullptr);
uiout->field_string ("name", name);
uiout->field_string ("type", type);
+ uiout->field_string ("class", uclass);
uiout->text ("\n");
}
}
diff --git a/gdb/frame-unwind.h b/gdb/frame-unwind.h
index 53fcd6869e9..deab4f7dbfb 100644
--- a/gdb/frame-unwind.h
+++ b/gdb/frame-unwind.h
@@ -156,12 +156,29 @@ typedef void (frame_dealloc_cache_ftype) (frame_info *self,
typedef gdbarch *(frame_prev_arch_ftype) (const frame_info_ptr &this_frame,
void **this_prologue_cache);
+/* Unwinders are classified by what part of GDB code created it. */
+enum frame_unwind_class
+{
+ /* This is mostly handled by core GDB code. */
+ FRAME_UNWIND_GDB,
+ /* This unwinder was added by one of GDB's extension languages. */
+ FRAME_UNWIND_EXTENSION,
+ /* The unwinder was created and mostly handles debug information. */
+ FRAME_UNWIND_DEBUGINFO,
+ /* The unwinder was created and handles target dependent things. */
+ FRAME_UNWIND_ARCH,
+};
+
struct frame_unwind
{
const char *name;
/* The frame's type. Should this instead be a collection of
predicates that test the frame for various attributes? */
enum frame_type type;
+ /* What kind of unwinder is this. It generally follows from where
+ the unwinder was added or where it looks for information to do the
+ unwinding. */
+ enum frame_unwind_class unwinder_class;
/* Should an attribute indicating the frame's address-in-block go
here? */
frame_unwind_stop_reason_ftype *stop_reason;
diff --git a/gdb/frv-linux-tdep.c b/gdb/frv-linux-tdep.c
index 46424453ef0..7a7c4904475 100644
--- a/gdb/frv-linux-tdep.c
+++ b/gdb/frv-linux-tdep.c
@@ -336,6 +336,7 @@ static const struct frame_unwind frv_linux_sigtramp_frame_unwind =
{
"frv linux sigtramp",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
frv_linux_sigtramp_frame_this_id,
frv_linux_sigtramp_frame_prev_register,
diff --git a/gdb/frv-tdep.c b/gdb/frv-tdep.c
index 1b5e15f831b..889397e56cb 100644
--- a/gdb/frv-tdep.c
+++ b/gdb/frv-tdep.c
@@ -1408,6 +1408,7 @@ frv_frame_prev_register (const frame_info_ptr &this_frame,
static const struct frame_unwind frv_frame_unwind = {
"frv prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
frv_frame_this_id,
frv_frame_prev_register,
diff --git a/gdb/ft32-tdep.c b/gdb/ft32-tdep.c
index 647c5844151..485253d2baf 100644
--- a/gdb/ft32-tdep.c
+++ b/gdb/ft32-tdep.c
@@ -528,6 +528,7 @@ static const struct frame_unwind ft32_frame_unwind =
{
"ft32 prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
ft32_frame_this_id,
ft32_frame_prev_register,
diff --git a/gdb/h8300-tdep.c b/gdb/h8300-tdep.c
index e91d664ffa3..5b4466ed316 100644
--- a/gdb/h8300-tdep.c
+++ b/gdb/h8300-tdep.c
@@ -503,6 +503,7 @@ h8300_frame_prev_register (const frame_info_ptr &this_frame, void **this_cache,
static const struct frame_unwind h8300_frame_unwind = {
"h8300 prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
h8300_frame_this_id,
h8300_frame_prev_register,
diff --git a/gdb/hppa-linux-tdep.c b/gdb/hppa-linux-tdep.c
index 8f73f8d2374..2619b60655a 100644
--- a/gdb/hppa-linux-tdep.c
+++ b/gdb/hppa-linux-tdep.c
@@ -311,6 +311,7 @@ hppa_linux_sigtramp_frame_sniffer (const struct frame_unwind *self,
static const struct frame_unwind hppa_linux_sigtramp_frame_unwind = {
"hppa linux sigtramp",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
hppa_linux_sigtramp_frame_this_id,
hppa_linux_sigtramp_frame_prev_register,
diff --git a/gdb/hppa-tdep.c b/gdb/hppa-tdep.c
index c15a9fcc03f..93765060127 100644
--- a/gdb/hppa-tdep.c
+++ b/gdb/hppa-tdep.c
@@ -2287,6 +2287,7 @@ static const struct frame_unwind hppa_frame_unwind =
{
"hppa unwind table",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
hppa_frame_this_id,
hppa_frame_prev_register,
@@ -2400,6 +2401,7 @@ static const struct frame_unwind hppa_fallback_frame_unwind =
{
"hppa prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
hppa_fallback_frame_this_id,
hppa_fallback_frame_prev_register,
@@ -2481,6 +2483,7 @@ hppa_stub_unwind_sniffer (const struct frame_unwind *self,
static const struct frame_unwind hppa_stub_frame_unwind = {
"hppa stub",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
hppa_stub_frame_this_id,
hppa_stub_frame_prev_register,
diff --git a/gdb/i386-obsd-tdep.c b/gdb/i386-obsd-tdep.c
index 3539c6599a0..1d2b1a09d16 100644
--- a/gdb/i386-obsd-tdep.c
+++ b/gdb/i386-obsd-tdep.c
@@ -396,6 +396,7 @@ static const struct frame_unwind i386obsd_trapframe_unwind = {
frame, but SIGTRAMP_FRAME would print <signal handler called>,
which really is not what we want here. */
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
i386obsd_trapframe_this_id,
i386obsd_trapframe_prev_register,
diff --git a/gdb/i386-tdep.c b/gdb/i386-tdep.c
index f1f909e1616..3df778d6048 100644
--- a/gdb/i386-tdep.c
+++ b/gdb/i386-tdep.c
@@ -2200,6 +2200,7 @@ static const struct frame_unwind i386_frame_unwind =
{
"i386 prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
i386_frame_unwind_stop_reason,
i386_frame_this_id,
i386_frame_prev_register,
@@ -2355,6 +2356,7 @@ static const struct frame_unwind i386_epilogue_override_frame_unwind =
{
"i386 epilogue override",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
i386_epilogue_frame_unwind_stop_reason,
i386_epilogue_frame_this_id,
i386_epilogue_frame_prev_register,
@@ -2366,6 +2368,7 @@ static const struct frame_unwind i386_epilogue_frame_unwind =
{
"i386 epilogue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
i386_epilogue_frame_unwind_stop_reason,
i386_epilogue_frame_this_id,
i386_epilogue_frame_prev_register,
@@ -2448,6 +2451,7 @@ static const struct frame_unwind i386_stack_tramp_frame_unwind =
{
"i386 stack tramp",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
i386_epilogue_frame_unwind_stop_reason,
i386_epilogue_frame_this_id,
i386_epilogue_frame_prev_register,
@@ -2597,6 +2601,7 @@ static const struct frame_unwind i386_sigtramp_frame_unwind =
{
"i386 sigtramp",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_ARCH,
i386_sigtramp_frame_unwind_stop_reason,
i386_sigtramp_frame_this_id,
i386_sigtramp_frame_prev_register,
diff --git a/gdb/ia64-tdep.c b/gdb/ia64-tdep.c
index 6376cf8d069..8c054c304bd 100644
--- a/gdb/ia64-tdep.c
+++ b/gdb/ia64-tdep.c
@@ -2166,6 +2166,7 @@ static const struct frame_unwind ia64_frame_unwind =
{
"ia64 prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
&ia64_frame_this_id,
&ia64_frame_prev_register,
@@ -2355,6 +2356,7 @@ static const struct frame_unwind ia64_sigtramp_frame_unwind =
{
"ia64 sigtramp",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
ia64_sigtramp_frame_this_id,
ia64_sigtramp_frame_prev_register,
@@ -3015,6 +3017,7 @@ static const struct frame_unwind ia64_libunwind_frame_unwind =
{
"ia64 libunwind",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
ia64_libunwind_frame_this_id,
ia64_libunwind_frame_prev_register,
@@ -3104,6 +3107,7 @@ static const struct frame_unwind ia64_libunwind_sigtramp_frame_unwind =
{
"ia64 libunwind sigtramp",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
ia64_libunwind_sigtramp_frame_this_id,
ia64_libunwind_sigtramp_frame_prev_register,
diff --git a/gdb/inline-frame.c b/gdb/inline-frame.c
index f65f39be40d..2da4cad5f9d 100644
--- a/gdb/inline-frame.c
+++ b/gdb/inline-frame.c
@@ -267,6 +267,7 @@ inline_frame_sniffer (const struct frame_unwind *self,
const struct frame_unwind inline_frame_unwind = {
"inline",
INLINE_FRAME,
+ FRAME_UNWIND_GDB,
default_frame_unwind_stop_reason,
inline_frame_this_id,
inline_frame_prev_register,
diff --git a/gdb/iq2000-tdep.c b/gdb/iq2000-tdep.c
index 5776c66f78a..e0db1b0de4e 100644
--- a/gdb/iq2000-tdep.c
+++ b/gdb/iq2000-tdep.c
@@ -427,6 +427,7 @@ iq2000_frame_this_id (const frame_info_ptr &this_frame, void **this_cache,
static const struct frame_unwind iq2000_frame_unwind = {
"iq2000 prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
iq2000_frame_this_id,
iq2000_frame_prev_register,
diff --git a/gdb/jit.c b/gdb/jit.c
index 797be95a8da..8f08f75620a 100644
--- a/gdb/jit.c
+++ b/gdb/jit.c
@@ -1108,6 +1108,7 @@ static const struct frame_unwind jit_frame_unwind =
{
"jit",
NORMAL_FRAME,
+ FRAME_UNWIND_EXTENSION,
default_frame_unwind_stop_reason,
jit_frame_this_id,
jit_frame_prev_register,
diff --git a/gdb/lm32-tdep.c b/gdb/lm32-tdep.c
index 98a07281051..4eb5f2ad426 100644
--- a/gdb/lm32-tdep.c
+++ b/gdb/lm32-tdep.c
@@ -450,6 +450,7 @@ lm32_frame_prev_register (const frame_info_ptr &this_frame,
static const struct frame_unwind lm32_frame_unwind = {
"lm32 prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
lm32_frame_this_id,
lm32_frame_prev_register,
diff --git a/gdb/loongarch-tdep.c b/gdb/loongarch-tdep.c
index af0d6896143..891da6a3b78 100644
--- a/gdb/loongarch-tdep.c
+++ b/gdb/loongarch-tdep.c
@@ -453,6 +453,7 @@ loongarch_frame_prev_register (const frame_info_ptr &this_frame,
static const struct frame_unwind loongarch_frame_unwind = {
"loongarch prologue",
/*.type =*/NORMAL_FRAME,
+ /*.unwinder_class=*/FRAME_UNWIND_ARCH,
/*.stop_reason =*/default_frame_unwind_stop_reason,
/*.this_id =*/loongarch_frame_this_id,
/*.prev_register =*/loongarch_frame_prev_register,
diff --git a/gdb/m32c-tdep.c b/gdb/m32c-tdep.c
index d9890d0e464..77c109607d7 100644
--- a/gdb/m32c-tdep.c
+++ b/gdb/m32c-tdep.c
@@ -1958,6 +1958,7 @@ m32c_prev_register (const frame_info_ptr &this_frame,
static const struct frame_unwind m32c_unwind = {
"m32c prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
m32c_this_id,
m32c_prev_register,
diff --git a/gdb/m32r-linux-tdep.c b/gdb/m32r-linux-tdep.c
index 8eea6620df9..11a150a92b8 100644
--- a/gdb/m32r-linux-tdep.c
+++ b/gdb/m32r-linux-tdep.c
@@ -304,6 +304,7 @@ m32r_linux_sigtramp_frame_sniffer (const struct frame_unwind *self,
static const struct frame_unwind m32r_linux_sigtramp_frame_unwind = {
"m32r linux sigtramp",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
m32r_linux_sigtramp_frame_this_id,
m32r_linux_sigtramp_frame_prev_register,
diff --git a/gdb/m32r-tdep.c b/gdb/m32r-tdep.c
index f2f8602f23c..1c1130431d4 100644
--- a/gdb/m32r-tdep.c
+++ b/gdb/m32r-tdep.c
@@ -834,6 +834,7 @@ m32r_frame_prev_register (const frame_info_ptr &this_frame,
static const struct frame_unwind m32r_frame_unwind = {
"m32r prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
m32r_frame_this_id,
m32r_frame_prev_register,
diff --git a/gdb/m68hc11-tdep.c b/gdb/m68hc11-tdep.c
index e58e44b7fd2..909600da2ec 100644
--- a/gdb/m68hc11-tdep.c
+++ b/gdb/m68hc11-tdep.c
@@ -939,6 +939,7 @@ m68hc11_frame_prev_register (const frame_info_ptr &this_frame,
static const struct frame_unwind m68hc11_frame_unwind = {
"m68hc11 prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
m68hc11_frame_this_id,
m68hc11_frame_prev_register,
diff --git a/gdb/m68k-linux-tdep.c b/gdb/m68k-linux-tdep.c
index 7250ce09826..7cca4f86394 100644
--- a/gdb/m68k-linux-tdep.c
+++ b/gdb/m68k-linux-tdep.c
@@ -318,6 +318,7 @@ static const struct frame_unwind m68k_linux_sigtramp_frame_unwind =
{
"m68k linux sigtramp",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
m68k_linux_sigtramp_frame_this_id,
m68k_linux_sigtramp_frame_prev_register,
diff --git a/gdb/m68k-tdep.c b/gdb/m68k-tdep.c
index 1b8cc927e0c..329e197a868 100644
--- a/gdb/m68k-tdep.c
+++ b/gdb/m68k-tdep.c
@@ -1011,6 +1011,7 @@ static const struct frame_unwind m68k_frame_unwind =
{
"m68k prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
m68k_frame_this_id,
m68k_frame_prev_register,
diff --git a/gdb/mep-tdep.c b/gdb/mep-tdep.c
index 913889ecfb2..71f37e80680 100644
--- a/gdb/mep-tdep.c
+++ b/gdb/mep-tdep.c
@@ -2064,6 +2064,7 @@ mep_frame_prev_register (const frame_info_ptr &this_frame,
static const struct frame_unwind mep_frame_unwind = {
"mep prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
mep_frame_this_id,
mep_frame_prev_register,
diff --git a/gdb/microblaze-tdep.c b/gdb/microblaze-tdep.c
index 3d768d7e161..94e8b0cee53 100644
--- a/gdb/microblaze-tdep.c
+++ b/gdb/microblaze-tdep.c
@@ -482,6 +482,7 @@ static const struct frame_unwind microblaze_frame_unwind =
{
"microblaze prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
microblaze_frame_this_id,
microblaze_frame_prev_register,
diff --git a/gdb/mips-sde-tdep.c b/gdb/mips-sde-tdep.c
index 90988cdfdac..18cb9485639 100644
--- a/gdb/mips-sde-tdep.c
+++ b/gdb/mips-sde-tdep.c
@@ -164,6 +164,7 @@ static const struct frame_unwind mips_sde_frame_unwind =
{
"mips sde sigtramp",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
mips_sde_frame_this_id,
mips_sde_frame_prev_register,
diff --git a/gdb/mips-tdep.c b/gdb/mips-tdep.c
index ae58d7c8720..6b43f08b1dc 100644
--- a/gdb/mips-tdep.c
+++ b/gdb/mips-tdep.c
@@ -2933,6 +2933,7 @@ static const struct frame_unwind mips_insn16_frame_unwind =
{
"mips insn16 prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
mips_insn16_frame_this_id,
mips_insn16_frame_prev_register,
@@ -3369,6 +3370,7 @@ static const struct frame_unwind mips_micro_frame_unwind =
{
"mips micro prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
mips_micro_frame_this_id,
mips_micro_frame_prev_register,
@@ -3748,6 +3750,7 @@ static const struct frame_unwind mips_insn32_frame_unwind =
{
"mips insn32 prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
mips_insn32_frame_this_id,
mips_insn32_frame_prev_register,
@@ -3865,6 +3868,7 @@ static const struct frame_unwind mips_stub_frame_unwind =
{
"mips stub",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
mips_stub_frame_this_id,
mips_stub_frame_prev_register,
diff --git a/gdb/mn10300-tdep.c b/gdb/mn10300-tdep.c
index d44eebfcb17..565300afd3c 100644
--- a/gdb/mn10300-tdep.c
+++ b/gdb/mn10300-tdep.c
@@ -1130,6 +1130,7 @@ mn10300_frame_prev_register (const frame_info_ptr &this_frame,
static const struct frame_unwind mn10300_frame_unwind = {
"mn10300 prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
mn10300_frame_this_id,
mn10300_frame_prev_register,
diff --git a/gdb/moxie-tdep.c b/gdb/moxie-tdep.c
index 29ad1f2bb2e..82d3478ed68 100644
--- a/gdb/moxie-tdep.c
+++ b/gdb/moxie-tdep.c
@@ -588,6 +588,7 @@ moxie_frame_prev_register (const frame_info_ptr &this_frame,
static const struct frame_unwind moxie_frame_unwind = {
"moxie prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
moxie_frame_this_id,
moxie_frame_prev_register,
diff --git a/gdb/msp430-tdep.c b/gdb/msp430-tdep.c
index 017ebb432d4..7fb5aee5bbe 100644
--- a/gdb/msp430-tdep.c
+++ b/gdb/msp430-tdep.c
@@ -545,6 +545,7 @@ msp430_prev_register (const frame_info_ptr &this_frame,
static const struct frame_unwind msp430_unwind = {
"msp430 prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
msp430_this_id,
msp430_prev_register,
diff --git a/gdb/nds32-tdep.c b/gdb/nds32-tdep.c
index 8ad51d0798b..910a6f7a1d0 100644
--- a/gdb/nds32-tdep.c
+++ b/gdb/nds32-tdep.c
@@ -992,6 +992,7 @@ static const struct frame_unwind nds32_frame_unwind =
{
"nds32 prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
nds32_frame_this_id,
nds32_frame_prev_register,
@@ -1376,6 +1377,7 @@ static const struct frame_unwind nds32_epilogue_frame_unwind =
{
"nds32 epilogue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
nds32_epilogue_frame_this_id,
nds32_epilogue_frame_prev_register,
diff --git a/gdb/nios2-tdep.c b/gdb/nios2-tdep.c
index 130c0154a60..5e68764bd6a 100644
--- a/gdb/nios2-tdep.c
+++ b/gdb/nios2-tdep.c
@@ -1981,6 +1981,7 @@ static const struct frame_unwind nios2_frame_unwind =
{
"nios2 prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
nios2_frame_this_id,
nios2_frame_prev_register,
@@ -2082,6 +2083,7 @@ static const struct frame_unwind nios2_stub_frame_unwind =
{
"nios2 stub",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
nios2_stub_frame_this_id,
nios2_stub_frame_prev_register,
diff --git a/gdb/or1k-tdep.c b/gdb/or1k-tdep.c
index 290f748cc56..6e0466c3408 100644
--- a/gdb/or1k-tdep.c
+++ b/gdb/or1k-tdep.c
@@ -1128,6 +1128,7 @@ or1k_frame_prev_register (const frame_info_ptr &this_frame,
static const struct frame_unwind or1k_frame_unwind = {
"or1k prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
or1k_frame_this_id,
or1k_frame_prev_register,
diff --git a/gdb/ppc-fbsd-tdep.c b/gdb/ppc-fbsd-tdep.c
index 3f0f93f1ac0..12eb396a0e3 100644
--- a/gdb/ppc-fbsd-tdep.c
+++ b/gdb/ppc-fbsd-tdep.c
@@ -265,6 +265,7 @@ ppcfbsd_sigtramp_frame_prev_register (const frame_info_ptr &this_frame,
static const struct frame_unwind ppcfbsd_sigtramp_frame_unwind = {
"ppc freebsd sigtramp",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
ppcfbsd_sigtramp_frame_this_id,
ppcfbsd_sigtramp_frame_prev_register,
diff --git a/gdb/ppc-obsd-tdep.c b/gdb/ppc-obsd-tdep.c
index 1bd79b3b3e1..ceb8b5d85db 100644
--- a/gdb/ppc-obsd-tdep.c
+++ b/gdb/ppc-obsd-tdep.c
@@ -234,6 +234,7 @@ ppcobsd_sigtramp_frame_prev_register (const frame_info_ptr &this_frame,
static const struct frame_unwind ppcobsd_sigtramp_frame_unwind = {
"ppc openbsd sigtramp",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
ppcobsd_sigtramp_frame_this_id,
ppcobsd_sigtramp_frame_prev_register,
diff --git a/gdb/python/py-unwind.c b/gdb/python/py-unwind.c
index a86ccd2c94e..68da62decec 100644
--- a/gdb/python/py-unwind.c
+++ b/gdb/python/py-unwind.c
@@ -964,6 +964,7 @@ pyuw_on_new_gdbarch (gdbarch *newarch)
unwinder->name = "python";
unwinder->type = NORMAL_FRAME;
+ unwinder->unwinder_class = FRAME_UNWIND_EXTENSION;
unwinder->stop_reason = default_frame_unwind_stop_reason;
unwinder->this_id = pyuw_this_id;
unwinder->prev_register = pyuw_prev_register;
diff --git a/gdb/record-btrace.c b/gdb/record-btrace.c
index 9fec6112755..45f6870bdb6 100644
--- a/gdb/record-btrace.c
+++ b/gdb/record-btrace.c
@@ -1898,6 +1898,7 @@ const struct frame_unwind record_btrace_frame_unwind =
{
"record-btrace",
NORMAL_FRAME,
+ FRAME_UNWIND_GDB,
record_btrace_frame_unwind_stop_reason,
record_btrace_frame_this_id,
record_btrace_frame_prev_register,
@@ -1910,6 +1911,7 @@ const struct frame_unwind record_btrace_tailcall_frame_unwind =
{
"record-btrace tailcall",
TAILCALL_FRAME,
+ FRAME_UNWIND_GDB,
record_btrace_frame_unwind_stop_reason,
record_btrace_frame_this_id,
record_btrace_frame_prev_register,
diff --git a/gdb/riscv-tdep.c b/gdb/riscv-tdep.c
index d592d2dc0c4..29b31dcedcc 100644
--- a/gdb/riscv-tdep.c
+++ b/gdb/riscv-tdep.c
@@ -3904,6 +3904,7 @@ static const struct frame_unwind riscv_frame_unwind =
{
/*.name =*/ "riscv prologue",
/*.type =*/ NORMAL_FRAME,
+ /*.unwinder_class=*/FRAME_UNWIND_ARCH,
/*.stop_reason =*/ default_frame_unwind_stop_reason,
/*.this_id =*/ riscv_frame_this_id,
/*.prev_register =*/ riscv_frame_prev_register,
diff --git a/gdb/rl78-tdep.c b/gdb/rl78-tdep.c
index 46a7ee9c3d4..0fcd5f9f1f3 100644
--- a/gdb/rl78-tdep.c
+++ b/gdb/rl78-tdep.c
@@ -1187,6 +1187,7 @@ static const struct frame_unwind rl78_unwind =
{
"rl78 prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
rl78_this_id,
rl78_prev_register,
diff --git a/gdb/rs6000-aix-tdep.c b/gdb/rs6000-aix-tdep.c
index 3faefe58ceb..3e5c8acff21 100644
--- a/gdb/rs6000-aix-tdep.c
+++ b/gdb/rs6000-aix-tdep.c
@@ -331,6 +331,7 @@ aix_sighandle_frame_sniffer (const struct frame_unwind *self,
static const struct frame_unwind aix_sighandle_frame_unwind = {
"rs6000 aix sighandle",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
aix_sighandle_frame_this_id,
aix_sighandle_frame_prev_register,
diff --git a/gdb/rs6000-tdep.c b/gdb/rs6000-tdep.c
index 2edb8234e6b..198703734aa 100644
--- a/gdb/rs6000-tdep.c
+++ b/gdb/rs6000-tdep.c
@@ -3842,6 +3842,7 @@ static const struct frame_unwind rs6000_frame_unwind =
{
"rs6000 prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
rs6000_frame_this_id,
rs6000_frame_prev_register,
@@ -3983,6 +3984,7 @@ static const struct frame_unwind rs6000_epilogue_frame_unwind =
{
"rs6000 epilogue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
rs6000_epilogue_frame_this_id, rs6000_epilogue_frame_prev_register,
NULL,
diff --git a/gdb/rx-tdep.c b/gdb/rx-tdep.c
index 6b12fe0a314..6cb74c23a3c 100644
--- a/gdb/rx-tdep.c
+++ b/gdb/rx-tdep.c
@@ -634,6 +634,7 @@ rx_exception_sniffer (const struct frame_unwind *self,
static const struct frame_unwind rx_frame_unwind = {
"rx prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
rx_frame_this_id,
rx_frame_prev_register,
@@ -648,6 +649,7 @@ static const struct frame_unwind rx_exception_unwind = {
"rx exception",
/* SIGTRAMP_FRAME could be used here, but backtraces are less informative. */
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
rx_frame_this_id,
rx_frame_prev_register,
diff --git a/gdb/s12z-tdep.c b/gdb/s12z-tdep.c
index c24c75665ed..7fa73cf6b8c 100644
--- a/gdb/s12z-tdep.c
+++ b/gdb/s12z-tdep.c
@@ -444,6 +444,7 @@ s12z_frame_prev_register (const frame_info_ptr &this_frame,
static const struct frame_unwind s12z_frame_unwind = {
"s12z prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
s12z_frame_this_id,
s12z_frame_prev_register,
diff --git a/gdb/s390-linux-tdep.c b/gdb/s390-linux-tdep.c
index bc1db550d2e..556fad64926 100644
--- a/gdb/s390-linux-tdep.c
+++ b/gdb/s390-linux-tdep.c
@@ -544,6 +544,7 @@ s390_sigtramp_frame_sniffer (const struct frame_unwind *self,
static const struct frame_unwind s390_sigtramp_frame_unwind = {
"s390 linux sigtramp",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
s390_sigtramp_frame_this_id,
s390_sigtramp_frame_prev_register,
diff --git a/gdb/s390-tdep.c b/gdb/s390-tdep.c
index 6687127d0aa..bbf88dbcab1 100644
--- a/gdb/s390-tdep.c
+++ b/gdb/s390-tdep.c
@@ -2649,6 +2649,7 @@ s390_frame_prev_register (const frame_info_ptr &this_frame,
static const struct frame_unwind s390_frame_unwind = {
"s390 prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
s390_frame_this_id,
s390_frame_prev_register,
@@ -2743,6 +2744,7 @@ s390_stub_frame_sniffer (const struct frame_unwind *self,
static const struct frame_unwind s390_stub_frame_unwind = {
"s390 stub",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
s390_stub_frame_this_id,
s390_stub_frame_prev_register,
diff --git a/gdb/sentinel-frame.c b/gdb/sentinel-frame.c
index 4eaeae0d254..9fe4036dbbe 100644
--- a/gdb/sentinel-frame.c
+++ b/gdb/sentinel-frame.c
@@ -82,6 +82,7 @@ const struct frame_unwind sentinel_frame_unwind =
{
"sentinel",
SENTINEL_FRAME,
+ FRAME_UNWIND_GDB,
default_frame_unwind_stop_reason,
sentinel_frame_this_id,
sentinel_frame_prev_register,
diff --git a/gdb/sh-tdep.c b/gdb/sh-tdep.c
index 0dbb905f1db..f87f0aa27c3 100644
--- a/gdb/sh-tdep.c
+++ b/gdb/sh-tdep.c
@@ -1953,6 +1953,7 @@ sh_frame_this_id (const frame_info_ptr &this_frame, void **this_cache,
static const struct frame_unwind sh_frame_unwind = {
"sh prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
sh_frame_this_id,
sh_frame_prev_register,
@@ -2020,6 +2021,7 @@ static const struct frame_unwind sh_stub_unwind =
{
"sh stub",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
sh_stub_this_id,
sh_frame_prev_register,
diff --git a/gdb/sparc-netbsd-tdep.c b/gdb/sparc-netbsd-tdep.c
index fc22e66826f..5b3dd067375 100644
--- a/gdb/sparc-netbsd-tdep.c
+++ b/gdb/sparc-netbsd-tdep.c
@@ -252,6 +252,7 @@ static const struct frame_unwind sparc32nbsd_sigcontext_frame_unwind =
{
"sparc32 netbsd sigcontext",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
sparc32nbsd_sigcontext_frame_this_id,
sparc32nbsd_sigcontext_frame_prev_register,
diff --git a/gdb/sparc-obsd-tdep.c b/gdb/sparc-obsd-tdep.c
index 3182a7778d3..049c315fa14 100644
--- a/gdb/sparc-obsd-tdep.c
+++ b/gdb/sparc-obsd-tdep.c
@@ -138,6 +138,7 @@ static const struct frame_unwind sparc32obsd_sigtramp_frame_unwind =
{
"sparc32 openbsd sigtramp",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
sparc32obsd_sigtramp_frame_this_id,
sparc32obsd_sigtramp_frame_prev_register,
diff --git a/gdb/sparc-sol2-tdep.c b/gdb/sparc-sol2-tdep.c
index aea3766d9b5..bb9c8a549b1 100644
--- a/gdb/sparc-sol2-tdep.c
+++ b/gdb/sparc-sol2-tdep.c
@@ -183,6 +183,7 @@ static const struct frame_unwind sparc32_sol2_sigtramp_frame_unwind =
{
"sparc32 solaris sigtramp",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
sparc32_sol2_sigtramp_frame_this_id,
sparc32_sol2_sigtramp_frame_prev_register,
diff --git a/gdb/sparc-tdep.c b/gdb/sparc-tdep.c
index edbc03878dc..30dd061d8c9 100644
--- a/gdb/sparc-tdep.c
+++ b/gdb/sparc-tdep.c
@@ -1350,6 +1350,7 @@ static const struct frame_unwind sparc32_frame_unwind =
{
"sparc32 prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
sparc32_frame_this_id,
sparc32_frame_prev_register,
diff --git a/gdb/sparc64-fbsd-tdep.c b/gdb/sparc64-fbsd-tdep.c
index a30c7c448e5..1d4c075a961 100644
--- a/gdb/sparc64-fbsd-tdep.c
+++ b/gdb/sparc64-fbsd-tdep.c
@@ -200,6 +200,7 @@ static const struct frame_unwind sparc64fbsd_sigtramp_frame_unwind =
{
"sparc64 freebsd sigtramp",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
sparc64fbsd_sigtramp_frame_this_id,
sparc64fbsd_sigtramp_frame_prev_register,
diff --git a/gdb/sparc64-netbsd-tdep.c b/gdb/sparc64-netbsd-tdep.c
index b101f4970d9..82eb99f57c1 100644
--- a/gdb/sparc64-netbsd-tdep.c
+++ b/gdb/sparc64-netbsd-tdep.c
@@ -226,6 +226,7 @@ static const struct frame_unwind sparc64nbsd_sigcontext_frame_unwind =
{
"sparc64 netbsd sigcontext",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
sparc64nbsd_sigcontext_frame_this_id,
sparc64nbsd_sigcontext_frame_prev_register,
diff --git a/gdb/sparc64-obsd-tdep.c b/gdb/sparc64-obsd-tdep.c
index cef6efd3379..e81afa604e7 100644
--- a/gdb/sparc64-obsd-tdep.c
+++ b/gdb/sparc64-obsd-tdep.c
@@ -224,6 +224,7 @@ static const struct frame_unwind sparc64obsd_frame_unwind =
{
"sparc64 openbsd sigtramp",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
sparc64obsd_frame_this_id,
sparc64obsd_frame_prev_register,
@@ -308,6 +309,7 @@ static const struct frame_unwind sparc64obsd_trapframe_unwind =
{
"sparc64 openbsd trap",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
sparc64obsd_trapframe_this_id,
sparc64obsd_trapframe_prev_register,
diff --git a/gdb/sparc64-sol2-tdep.c b/gdb/sparc64-sol2-tdep.c
index b7ca4ca1f5b..e8d09e2516e 100644
--- a/gdb/sparc64-sol2-tdep.c
+++ b/gdb/sparc64-sol2-tdep.c
@@ -186,6 +186,7 @@ static const struct frame_unwind sparc64_sol2_sigtramp_frame_unwind =
{
"sparc64 solaris sigtramp",
SIGTRAMP_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
sparc64_sol2_sigtramp_frame_this_id,
sparc64_sol2_sigtramp_frame_prev_register,
diff --git a/gdb/sparc64-tdep.c b/gdb/sparc64-tdep.c
index 7d44b1e16a0..09774ebcee6 100644
--- a/gdb/sparc64-tdep.c
+++ b/gdb/sparc64-tdep.c
@@ -1139,6 +1139,7 @@ static const struct frame_unwind sparc64_frame_unwind =
{
"sparc64 prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
sparc64_frame_this_id,
sparc64_frame_prev_register,
diff --git a/gdb/tic6x-tdep.c b/gdb/tic6x-tdep.c
index 6732478eb09..bac8ba84ed0 100644
--- a/gdb/tic6x-tdep.c
+++ b/gdb/tic6x-tdep.c
@@ -456,6 +456,7 @@ static const struct frame_unwind tic6x_frame_unwind =
{
"tic6x prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
tic6x_frame_this_id,
tic6x_frame_prev_register,
@@ -519,6 +520,7 @@ static const struct frame_unwind tic6x_stub_unwind =
{
"tic6x stub",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
tic6x_stub_this_id,
tic6x_frame_prev_register,
diff --git a/gdb/tilegx-tdep.c b/gdb/tilegx-tdep.c
index 92f2be0b208..16cd25f4635 100644
--- a/gdb/tilegx-tdep.c
+++ b/gdb/tilegx-tdep.c
@@ -903,6 +903,7 @@ tilegx_frame_base_address (const frame_info_ptr &this_frame, void **this_cache)
static const struct frame_unwind tilegx_frame_unwind = {
"tilegx prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
tilegx_frame_this_id,
tilegx_frame_prev_register,
diff --git a/gdb/tramp-frame.c b/gdb/tramp-frame.c
index 4f7c62d11fa..6368f67a2e7 100644
--- a/gdb/tramp-frame.c
+++ b/gdb/tramp-frame.c
@@ -166,6 +166,7 @@ tramp_frame_prepend_unwinder (struct gdbarch *gdbarch,
data->tramp_frame = tramp_frame;
unwinder->type = tramp_frame->frame_type;
unwinder->unwind_data = data;
+ unwinder->unwinder_class = FRAME_UNWIND_GDB;
unwinder->sniffer = tramp_frame_sniffer;
unwinder->stop_reason = default_frame_unwind_stop_reason;
unwinder->this_id = tramp_frame_this_id;
diff --git a/gdb/v850-tdep.c b/gdb/v850-tdep.c
index 531fdb48ab0..9300aeccf6f 100644
--- a/gdb/v850-tdep.c
+++ b/gdb/v850-tdep.c
@@ -1323,6 +1323,7 @@ v850_frame_this_id (const frame_info_ptr &this_frame, void **this_cache,
static const struct frame_unwind v850_frame_unwind = {
"v850 prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
v850_frame_this_id,
v850_frame_prev_register,
diff --git a/gdb/vax-tdep.c b/gdb/vax-tdep.c
index a42c872feff..25d07c59376 100644
--- a/gdb/vax-tdep.c
+++ b/gdb/vax-tdep.c
@@ -390,6 +390,7 @@ static const struct frame_unwind vax_frame_unwind =
{
"vax prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
vax_frame_this_id,
vax_frame_prev_register,
diff --git a/gdb/xstormy16-tdep.c b/gdb/xstormy16-tdep.c
index 766d1d144be..e01da4ecab4 100644
--- a/gdb/xstormy16-tdep.c
+++ b/gdb/xstormy16-tdep.c
@@ -731,6 +731,7 @@ xstormy16_frame_base_address (const frame_info_ptr &this_frame, void **this_cach
static const struct frame_unwind xstormy16_frame_unwind = {
"xstormy16 prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
xstormy16_frame_this_id,
xstormy16_frame_prev_register,
diff --git a/gdb/xtensa-tdep.c b/gdb/xtensa-tdep.c
index 840768b65c7..b8b7efb38b0 100644
--- a/gdb/xtensa-tdep.c
+++ b/gdb/xtensa-tdep.c
@@ -1501,6 +1501,7 @@ xtensa_unwind =
{
"xtensa prologue",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
xtensa_frame_this_id,
xtensa_frame_prev_register,
diff --git a/gdb/z80-tdep.c b/gdb/z80-tdep.c
index 23cdb68e190..fc42d77fa0f 100644
--- a/gdb/z80-tdep.c
+++ b/gdb/z80-tdep.c
@@ -1068,6 +1068,7 @@ z80_frame_unwind =
{
"z80",
NORMAL_FRAME,
+ FRAME_UNWIND_ARCH,
default_frame_unwind_stop_reason,
z80_frame_this_id,
z80_frame_prev_register,
--
2.45.0
^ permalink raw reply [flat|nested] 9+ messages in thread
* [PATCH v3 3/5] gdb: Migrate frame unwinders to use C++ classes
2024-05-08 14:54 [PATCH v3 0/5] Modernize frame unwinders and add disable feature Guinevere Larsen
2024-05-08 14:54 ` [PATCH v3 1/5] gdb: make gdbarch store a vector of frame unwinders Guinevere Larsen
2024-05-08 14:54 ` [PATCH v3 2/5] gdb: add "unwinder class" to " Guinevere Larsen
@ 2024-05-08 14:54 ` Guinevere Larsen
2024-05-08 14:54 ` [PATCH v3 4/5] gdb: introduce ability to disable frame unwinders Guinevere Larsen
` (2 subsequent siblings)
5 siblings, 0 replies; 9+ messages in thread
From: Guinevere Larsen @ 2024-05-08 14:54 UTC (permalink / raw)
To: gdb-patches; +Cc: Guinevere Larsen
Frame unwinders have historically been a structure populated with
callback pointers, so that architectures (or other specific unwinders)
could install their own way to handle the inferior. However, since
moving to c++, we could use polymorphism to get the same functionality
in a more readable way. Polymorphism also makes it simpler to add new
functionality to all frame unwinders, since all that's required is
adding it to the base class.
As part of the changes to add support to disabling frame unwinders,
this commit makes the first baby step in using polymorphism for the
frame unwinders, by making frame_unwind a virtual class, and adds a
couple of new classes. The main class added is frame_unwind_legacy,
which works the same as the previous structs, using function pointers
as callbacks. This class was added to allow the transition to happen
piecemeal. New unwinders should instead follow the lead of the other
classes implemented.
2 of the others, frame_unwind_python and frame_unwind_trampoline, were added
because it seemed simpler at the moment to do that instead of reworking
the dynamic allocation to work with the legacy class, and can be used as
an example to future implementations.
Finally, the cygwin unwinder was converted to a class since it was most
of the way there already.
---
gdb/aarch64-tdep.c | 10 +--
gdb/alpha-mdebug-tdep.c | 5 +-
gdb/alpha-tdep.c | 10 +--
gdb/amd64-obsd-tdep.c | 5 +-
gdb/amd64-tdep.c | 20 ++---
gdb/amd64-windows-tdep.c | 5 +-
gdb/amdgpu-tdep.c | 6 +-
gdb/arc-tdep.c | 8 +-
gdb/arm-tdep.c | 24 +++---
gdb/avr-tdep.c | 4 +-
gdb/bfin-tdep.c | 5 +-
gdb/bpf-tdep.c | 5 +-
gdb/cris-tdep.c | 10 +--
gdb/csky-tdep.c | 8 +-
gdb/dummy-frame.c | 7 +-
gdb/dummy-frame.h | 2 +-
gdb/dwarf2/frame-tailcall.c | 5 +-
gdb/dwarf2/frame-tailcall.h | 2 +-
gdb/dwarf2/frame.c | 14 ++--
gdb/frame-unwind.c | 61 ++++++++++++++-
gdb/frame-unwind.h | 150 +++++++++++++++++++++++++++++++++---
gdb/frame.c | 28 +++----
gdb/frv-linux-tdep.c | 5 +-
gdb/frv-tdep.c | 4 +-
gdb/ft32-tdep.c | 5 +-
gdb/h8300-tdep.c | 4 +-
gdb/hppa-linux-tdep.c | 4 +-
gdb/hppa-tdep.c | 14 ++--
gdb/i386-obsd-tdep.c | 4 +-
gdb/i386-tdep.c | 25 +++---
gdb/ia64-tdep.c | 20 ++---
gdb/inline-frame.c | 4 +-
gdb/inline-frame.h | 2 +-
gdb/iq2000-tdep.c | 4 +-
gdb/jit.c | 5 +-
gdb/lm32-tdep.c | 4 +-
gdb/loongarch-tdep.c | 6 +-
gdb/m32c-tdep.c | 4 +-
gdb/m32r-linux-tdep.c | 4 +-
gdb/m32r-tdep.c | 4 +-
gdb/m68hc11-tdep.c | 4 +-
gdb/m68k-linux-tdep.c | 5 +-
gdb/m68k-tdep.c | 5 +-
gdb/mep-tdep.c | 4 +-
gdb/microblaze-tdep.c | 5 +-
gdb/mips-sde-tdep.c | 5 +-
gdb/mips-tdep.c | 20 ++---
gdb/mn10300-tdep.c | 4 +-
gdb/moxie-tdep.c | 4 +-
gdb/msp430-tdep.c | 4 +-
gdb/nds32-tdep.c | 12 ++-
gdb/nios2-tdep.c | 10 +--
gdb/or1k-tdep.c | 6 +-
gdb/ppc-fbsd-tdep.c | 4 +-
gdb/ppc-obsd-tdep.c | 4 +-
gdb/python/py-unwind.c | 51 +++++++++---
gdb/record-btrace.c | 10 +--
gdb/record.h | 4 +-
gdb/riscv-tdep.c | 7 +-
gdb/rl78-tdep.c | 5 +-
gdb/rs6000-aix-tdep.c | 4 +-
gdb/rs6000-tdep.c | 10 +--
gdb/rx-tdep.c | 8 +-
gdb/s12z-tdep.c | 6 +-
gdb/s390-linux-tdep.c | 4 +-
gdb/s390-tdep.c | 8 +-
gdb/sentinel-frame.c | 7 +-
gdb/sentinel-frame.h | 2 +-
gdb/sh-tdep.c | 9 +--
gdb/sparc-netbsd-tdep.c | 5 +-
gdb/sparc-obsd-tdep.c | 5 +-
gdb/sparc-sol2-tdep.c | 5 +-
gdb/sparc-tdep.c | 5 +-
gdb/sparc64-fbsd-tdep.c | 5 +-
gdb/sparc64-netbsd-tdep.c | 5 +-
gdb/sparc64-obsd-tdep.c | 10 +--
gdb/sparc64-sol2-tdep.c | 5 +-
gdb/sparc64-tdep.c | 5 +-
gdb/tic6x-tdep.c | 10 +--
gdb/tilegx-tdep.c | 4 +-
gdb/tramp-frame.c | 59 +++++++++++---
gdb/v850-tdep.c | 4 +-
gdb/vax-tdep.c | 5 +-
gdb/windows-tdep.c | 33 ++++----
gdb/windows-tdep.h | 16 +++-
gdb/xstormy16-tdep.c | 4 +-
gdb/xtensa-tdep.c | 6 +-
gdb/z80-tdep.c | 6 +-
88 files changed, 563 insertions(+), 381 deletions(-)
diff --git a/gdb/aarch64-tdep.c b/gdb/aarch64-tdep.c
index fb431b15334..75c98c40291 100644
--- a/gdb/aarch64-tdep.c
+++ b/gdb/aarch64-tdep.c
@@ -1204,8 +1204,7 @@ aarch64_prologue_prev_register (const frame_info_ptr &this_frame,
}
/* AArch64 prologue unwinder. */
-static frame_unwind aarch64_prologue_unwind =
-{
+static const frame_unwind_legacy aarch64_prologue_unwind (
"aarch64 prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -1214,7 +1213,7 @@ static frame_unwind aarch64_prologue_unwind =
aarch64_prologue_prev_register,
NULL,
default_frame_sniffer
-};
+);
/* Allocate and fill in *THIS_CACHE with information about the prologue of
*THIS_FRAME. Do not do this is if *THIS_CACHE was already allocated.
@@ -1300,8 +1299,7 @@ aarch64_stub_unwind_sniffer (const struct frame_unwind *self,
}
/* AArch64 stub unwinder. */
-static frame_unwind aarch64_stub_unwind =
-{
+static const frame_unwind_legacy aarch64_stub_unwind (
"aarch64 stub",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -1310,7 +1308,7 @@ static frame_unwind aarch64_stub_unwind =
aarch64_prologue_prev_register,
NULL,
aarch64_stub_unwind_sniffer
-};
+);
/* Return the frame base address of *THIS_FRAME. */
diff --git a/gdb/alpha-mdebug-tdep.c b/gdb/alpha-mdebug-tdep.c
index b087afabae7..b43849c203d 100644
--- a/gdb/alpha-mdebug-tdep.c
+++ b/gdb/alpha-mdebug-tdep.c
@@ -330,8 +330,7 @@ alpha_mdebug_frame_sniffer (const struct frame_unwind *self,
return 1;
}
-static const struct frame_unwind alpha_mdebug_frame_unwind =
-{
+static const struct frame_unwind_legacy alpha_mdebug_frame_unwind (
"alpha mdebug",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -340,7 +339,7 @@ static const struct frame_unwind alpha_mdebug_frame_unwind =
alpha_mdebug_frame_prev_register,
NULL,
alpha_mdebug_frame_sniffer
-};
+);
static CORE_ADDR
alpha_mdebug_frame_base_address (const frame_info_ptr &this_frame,
diff --git a/gdb/alpha-tdep.c b/gdb/alpha-tdep.c
index f55bf2c8661..d719a575a86 100644
--- a/gdb/alpha-tdep.c
+++ b/gdb/alpha-tdep.c
@@ -1007,8 +1007,7 @@ alpha_sigtramp_frame_sniffer (const struct frame_unwind *self,
return 0;
}
-static const struct frame_unwind alpha_sigtramp_frame_unwind =
-{
+static const struct frame_unwind_legacy alpha_sigtramp_frame_unwind (
"alpha sigtramp",
SIGTRAMP_FRAME,
FRAME_UNWIND_ARCH,
@@ -1017,7 +1016,7 @@ static const struct frame_unwind alpha_sigtramp_frame_unwind =
alpha_sigtramp_frame_prev_register,
NULL,
alpha_sigtramp_frame_sniffer
-};
+);
\f
@@ -1427,8 +1426,7 @@ alpha_heuristic_frame_prev_register (const frame_info_ptr &this_frame,
return trad_frame_get_prev_register (this_frame, info->saved_regs, regnum);
}
-static const struct frame_unwind alpha_heuristic_frame_unwind =
-{
+static const struct frame_unwind_legacy alpha_heuristic_frame_unwind (
"alpha prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -1437,7 +1435,7 @@ static const struct frame_unwind alpha_heuristic_frame_unwind =
alpha_heuristic_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
static CORE_ADDR
alpha_heuristic_frame_base_address (const frame_info_ptr &this_frame,
diff --git a/gdb/amd64-obsd-tdep.c b/gdb/amd64-obsd-tdep.c
index 5359959e3bb..d1ebb0693e6 100644
--- a/gdb/amd64-obsd-tdep.c
+++ b/gdb/amd64-obsd-tdep.c
@@ -402,8 +402,7 @@ amd64obsd_trapframe_sniffer (const struct frame_unwind *self,
|| (startswith (name, "Xintr"))));
}
-static const struct frame_unwind amd64obsd_trapframe_unwind =
-{
+static const struct frame_unwind_legacy amd64obsd_trapframe_unwind (
/* FIXME: kettenis/20051219: This really is more like an interrupt
frame, but SIGTRAMP_FRAME would print <signal handler called>,
which really is not what we want here. */
@@ -415,7 +414,7 @@ static const struct frame_unwind amd64obsd_trapframe_unwind =
amd64obsd_trapframe_prev_register,
NULL,
amd64obsd_trapframe_sniffer
-};
+);
\f
static void
diff --git a/gdb/amd64-tdep.c b/gdb/amd64-tdep.c
index d839335d9fa..057bf6e47e2 100644
--- a/gdb/amd64-tdep.c
+++ b/gdb/amd64-tdep.c
@@ -2678,8 +2678,7 @@ amd64_frame_prev_register (const frame_info_ptr &this_frame, void **this_cache,
return frame_unwind_got_register (this_frame, regnum, regnum);
}
-static const struct frame_unwind amd64_frame_unwind =
-{
+static const struct frame_unwind_legacy amd64_frame_unwind (
"amd64 prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -2688,7 +2687,7 @@ static const struct frame_unwind amd64_frame_unwind =
amd64_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
\f
/* Generate a bytecode expression to get the value of the saved PC. */
@@ -2825,8 +2824,7 @@ amd64_sigtramp_frame_sniffer (const struct frame_unwind *self,
return 0;
}
-static const struct frame_unwind amd64_sigtramp_frame_unwind =
-{
+static const struct frame_unwind_legacy amd64_sigtramp_frame_unwind (
"amd64 sigtramp",
SIGTRAMP_FRAME,
FRAME_UNWIND_ARCH,
@@ -2835,7 +2833,7 @@ static const struct frame_unwind amd64_sigtramp_frame_unwind =
amd64_sigtramp_frame_prev_register,
NULL,
amd64_sigtramp_frame_sniffer
-};
+);
\f
static CORE_ADDR
@@ -3018,8 +3016,7 @@ amd64_epilogue_frame_this_id (const frame_info_ptr &this_frame,
(*this_id) = frame_id_build (cache->base + 16, cache->pc);
}
-static const struct frame_unwind amd64_epilogue_override_frame_unwind =
-{
+static const struct frame_unwind_legacy amd64_epilogue_override_frame_unwind (
"amd64 epilogue override",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -3028,10 +3025,9 @@ static const struct frame_unwind amd64_epilogue_override_frame_unwind =
amd64_frame_prev_register,
NULL,
amd64_epilogue_override_frame_sniffer
-};
+);
-static const struct frame_unwind amd64_epilogue_frame_unwind =
-{
+static const struct frame_unwind_legacy amd64_epilogue_frame_unwind (
"amd64 epilogue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -3040,7 +3036,7 @@ static const struct frame_unwind amd64_epilogue_frame_unwind =
amd64_frame_prev_register,
NULL,
amd64_epilogue_frame_sniffer
-};
+);
static struct frame_id
amd64_dummy_id (struct gdbarch *gdbarch, const frame_info_ptr &this_frame)
diff --git a/gdb/amd64-windows-tdep.c b/gdb/amd64-windows-tdep.c
index 74bea7370fe..cb74aea50ec 100644
--- a/gdb/amd64-windows-tdep.c
+++ b/gdb/amd64-windows-tdep.c
@@ -1182,8 +1182,7 @@ amd64_windows_frame_this_id (const frame_info_ptr &this_frame, void **this_cache
/* Windows x64 SEH unwinder. */
-static const struct frame_unwind amd64_windows_frame_unwind =
-{
+static const struct frame_unwind_legacy amd64_windows_frame_unwind (
"amd64 windows",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -1192,7 +1191,7 @@ static const struct frame_unwind amd64_windows_frame_unwind =
&amd64_windows_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
/* Implement the "skip_prologue" gdbarch method. */
diff --git a/gdb/amdgpu-tdep.c b/gdb/amdgpu-tdep.c
index 679098a778f..4f02a7efd63 100644
--- a/gdb/amdgpu-tdep.c
+++ b/gdb/amdgpu-tdep.c
@@ -891,7 +891,7 @@ amdgpu_frame_prev_register (const frame_info_ptr &this_frame, void **this_cache,
return frame_unwind_got_register (this_frame, regnum, regnum);
}
-static const frame_unwind amdgpu_frame_unwind = {
+static const frame_unwind_legacy amdgpu_frame_unwind (
"amdgpu",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -901,8 +901,8 @@ static const frame_unwind amdgpu_frame_unwind = {
nullptr,
default_frame_sniffer,
nullptr,
- nullptr,
-};
+ nullptr
+);
static int
print_insn_amdgpu (bfd_vma memaddr, struct disassemble_info *info)
diff --git a/gdb/arc-tdep.c b/gdb/arc-tdep.c
index e96d186246f..d57d614f5c5 100644
--- a/gdb/arc-tdep.c
+++ b/gdb/arc-tdep.c
@@ -1910,7 +1910,7 @@ arc_sigtramp_frame_sniffer (const struct frame_unwind *self,
the fallback unwinder, we use the default frame sniffer, which always
accepts the frame. */
-static const struct frame_unwind arc_frame_unwind = {
+static const struct frame_unwind_legacy arc_frame_unwind (
"arc prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -1921,13 +1921,13 @@ static const struct frame_unwind arc_frame_unwind = {
default_frame_sniffer,
NULL,
NULL
-};
+);
/* Structure defining the ARC signal frame unwind functions. Custom
sniffer is used, because this frame must be accepted only in the right
context. */
-static const struct frame_unwind arc_sigtramp_frame_unwind = {
+static const struct frame_unwind_legacy arc_sigtramp_frame_unwind (
"arc sigtramp",
SIGTRAMP_FRAME,
FRAME_UNWIND_ARCH,
@@ -1938,7 +1938,7 @@ static const struct frame_unwind arc_sigtramp_frame_unwind = {
arc_sigtramp_frame_sniffer,
NULL,
NULL
-};
+);
static const struct frame_base arc_normal_base = {
diff --git a/gdb/arm-tdep.c b/gdb/arm-tdep.c
index 5c1f50cd0b8..08b5f9320b0 100644
--- a/gdb/arm-tdep.c
+++ b/gdb/arm-tdep.c
@@ -2469,7 +2469,7 @@ arm_prologue_prev_register (const frame_info_ptr &this_frame,
prev_regnum);
}
-static frame_unwind arm_prologue_unwind = {
+static const frame_unwind_legacy arm_prologue_unwind (
"arm prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -2478,7 +2478,7 @@ static frame_unwind arm_prologue_unwind = {
arm_prologue_prev_register,
NULL,
default_frame_sniffer
-};
+);
/* Maintain a list of ARM exception table entries per objfile, similar to the
list of mapping symbols. We only cache entries for standard ARM-defined
@@ -3189,7 +3189,7 @@ arm_exidx_unwind_sniffer (const struct frame_unwind *self,
return 1;
}
-struct frame_unwind arm_exidx_unwind = {
+struct frame_unwind_legacy arm_exidx_unwind (
"arm exidx",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -3198,7 +3198,7 @@ struct frame_unwind arm_exidx_unwind = {
arm_prologue_prev_register,
NULL,
arm_exidx_unwind_sniffer
-};
+);
static struct arm_prologue_cache *
arm_make_epilogue_frame_cache (const frame_info_ptr &this_frame)
@@ -3299,8 +3299,7 @@ arm_epilogue_frame_sniffer (const struct frame_unwind *self,
/* Frame unwinder from epilogue. */
-static const struct frame_unwind arm_epilogue_frame_unwind =
-{
+static const struct frame_unwind_legacy arm_epilogue_frame_unwind (
"arm epilogue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -3308,8 +3307,8 @@ static const struct frame_unwind arm_epilogue_frame_unwind =
arm_epilogue_frame_this_id,
arm_epilogue_frame_prev_register,
NULL,
- arm_epilogue_frame_sniffer,
-};
+ arm_epilogue_frame_sniffer
+);
/* Recognize GCC's trampoline for thumb call-indirect. If we are in a
trampoline, return the target PC. Otherwise return 0.
@@ -3430,7 +3429,7 @@ arm_stub_unwind_sniffer (const struct frame_unwind *self,
return 0;
}
-struct frame_unwind arm_stub_unwind = {
+struct frame_unwind_legacy arm_stub_unwind (
"arm stub",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -3439,7 +3438,7 @@ struct frame_unwind arm_stub_unwind = {
arm_prologue_prev_register,
NULL,
arm_stub_unwind_sniffer
-};
+);
/* Put here the code to store, into CACHE->saved_regs, the addresses
of the saved registers of frame described by THIS_FRAME. CACHE is
@@ -3956,8 +3955,7 @@ arm_m_exception_unwind_sniffer (const struct frame_unwind *self,
/* Frame unwinder for M-profile exceptions (EXC_RETURN on stack),
lockup and secure/nonsecure interstate function calls (FNC_RETURN). */
-struct frame_unwind arm_m_exception_unwind =
-{
+struct frame_unwind_legacy arm_m_exception_unwind (
"arm m exception lockup sec_fnc",
SIGTRAMP_FRAME,
FRAME_UNWIND_ARCH,
@@ -3966,7 +3964,7 @@ struct frame_unwind arm_m_exception_unwind =
arm_m_exception_prev_register,
NULL,
arm_m_exception_unwind_sniffer
-};
+);
static CORE_ADDR
arm_normal_frame_base (const frame_info_ptr &this_frame, void **this_cache)
diff --git a/gdb/avr-tdep.c b/gdb/avr-tdep.c
index 569ca94abaa..b852d37115d 100644
--- a/gdb/avr-tdep.c
+++ b/gdb/avr-tdep.c
@@ -1155,7 +1155,7 @@ avr_frame_prev_register (const frame_info_ptr &this_frame,
return trad_frame_get_prev_register (this_frame, info->saved_regs, regnum);
}
-static const struct frame_unwind avr_frame_unwind = {
+static const struct frame_unwind_legacy avr_frame_unwind (
"avr prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -1164,7 +1164,7 @@ static const struct frame_unwind avr_frame_unwind = {
avr_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
static CORE_ADDR
avr_frame_base_address (const frame_info_ptr &this_frame, void **this_cache)
diff --git a/gdb/bfin-tdep.c b/gdb/bfin-tdep.c
index 739d13ff6c9..1f12169ec79 100644
--- a/gdb/bfin-tdep.c
+++ b/gdb/bfin-tdep.c
@@ -372,8 +372,7 @@ bfin_frame_prev_register (const frame_info_ptr &this_frame,
return frame_unwind_got_register (this_frame, regnum, regnum);
}
-static const struct frame_unwind bfin_frame_unwind =
-{
+static const struct frame_unwind_legacy bfin_frame_unwind (
"bfin prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -382,7 +381,7 @@ static const struct frame_unwind bfin_frame_unwind =
bfin_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
/* Check for "[--SP] = <reg>;" insns. These are appear in function
prologues to save misc registers onto the stack. */
diff --git a/gdb/bpf-tdep.c b/gdb/bpf-tdep.c
index 1f53d63c982..8f3e50d86c1 100644
--- a/gdb/bpf-tdep.c
+++ b/gdb/bpf-tdep.c
@@ -181,8 +181,7 @@ bpf_frame_prev_register (const frame_info_ptr &this_frame,
/* Frame unwinder machinery for BPF. */
-static const struct frame_unwind bpf_frame_unwind =
-{
+static const struct frame_unwind_legacy bpf_frame_unwind (
"bpf prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -191,7 +190,7 @@ static const struct frame_unwind bpf_frame_unwind =
bpf_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
\f
/* Breakpoints. */
diff --git a/gdb/cris-tdep.c b/gdb/cris-tdep.c
index 6af9f52d6af..813bcd2e435 100644
--- a/gdb/cris-tdep.c
+++ b/gdb/cris-tdep.c
@@ -435,8 +435,7 @@ cris_sigtramp_frame_sniffer (const struct frame_unwind *self,
return 0;
}
-static const struct frame_unwind cris_sigtramp_frame_unwind =
-{
+static const struct frame_unwind_legacy cris_sigtramp_frame_unwind (
"cris sigtramp",
SIGTRAMP_FRAME,
FRAME_UNWIND_ARCH,
@@ -445,7 +444,7 @@ static const struct frame_unwind cris_sigtramp_frame_unwind =
cris_sigtramp_frame_prev_register,
NULL,
cris_sigtramp_frame_sniffer
-};
+);
static int
crisv32_single_step_through_delay (struct gdbarch *gdbarch,
@@ -901,8 +900,7 @@ cris_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
return sp;
}
-static const struct frame_unwind cris_frame_unwind =
-{
+static const struct frame_unwind_legacy cris_frame_unwind (
"cris prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -911,7 +909,7 @@ static const struct frame_unwind cris_frame_unwind =
cris_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
static CORE_ADDR
cris_frame_base_address (const frame_info_ptr &this_frame, void **this_cache)
diff --git a/gdb/csky-tdep.c b/gdb/csky-tdep.c
index 57a07a3c36b..188b790579a 100644
--- a/gdb/csky-tdep.c
+++ b/gdb/csky-tdep.c
@@ -2159,7 +2159,7 @@ csky_frame_prev_register (const frame_info_ptr &this_frame,
/* Data structures for the normal prologue-analysis-based
unwinder. */
-static const struct frame_unwind csky_unwind_cache = {
+static const struct frame_unwind_legacy csky_unwind_cache (
"cski prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -2170,7 +2170,7 @@ static const struct frame_unwind csky_unwind_cache = {
default_frame_sniffer,
NULL,
NULL
-};
+);
static CORE_ADDR
csky_check_long_branch (const frame_info_ptr &frame, CORE_ADDR pc)
@@ -2294,7 +2294,7 @@ csky_stub_prev_register (const frame_info_ptr &this_frame,
prev_regnum);
}
-static frame_unwind csky_stub_unwind = {
+static const frame_unwind_legacy csky_stub_unwind (
"csky stub",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -2303,7 +2303,7 @@ static frame_unwind csky_stub_unwind = {
csky_stub_prev_register,
NULL,
csky_stub_unwind_sniffer
-};
+);
/* Implement the this_base, this_locals, and this_args hooks
for the normal unwinder. */
diff --git a/gdb/dummy-frame.c b/gdb/dummy-frame.c
index e7de15b5c4d..697cc11a184 100644
--- a/gdb/dummy-frame.c
+++ b/gdb/dummy-frame.c
@@ -375,8 +375,7 @@ dummy_frame_this_id (const frame_info_ptr &this_frame,
(*this_id) = cache->this_id;
}
-const struct frame_unwind dummy_frame_unwind =
-{
+const struct frame_unwind_legacy dummy_frame_unwind (
"dummy",
DUMMY_FRAME,
FRAME_UNWIND_GDB,
@@ -384,8 +383,8 @@ const struct frame_unwind dummy_frame_unwind =
dummy_frame_this_id,
dummy_frame_prev_register,
NULL,
- dummy_frame_sniffer,
-};
+ dummy_frame_sniffer
+);
/* See dummy-frame.h. */
diff --git a/gdb/dummy-frame.h b/gdb/dummy-frame.h
index 7d963ad9beb..a1341797acd 100644
--- a/gdb/dummy-frame.h
+++ b/gdb/dummy-frame.h
@@ -54,7 +54,7 @@ extern void dummy_frame_discard (frame_id dummy_id, thread_info *thread);
/* If the PC falls in a dummy frame, return a dummy frame
unwinder. */
-extern const struct frame_unwind dummy_frame_unwind;
+extern const struct frame_unwind_legacy dummy_frame_unwind;
/* Destructor for dummy_frame. DATA is supplied by registrant.
REGISTERS_VALID is 1 for dummy_frame_pop, 0 for dummy_frame_discard. */
diff --git a/gdb/dwarf2/frame-tailcall.c b/gdb/dwarf2/frame-tailcall.c
index 45ba3a70262..20a98f436aa 100644
--- a/gdb/dwarf2/frame-tailcall.c
+++ b/gdb/dwarf2/frame-tailcall.c
@@ -469,8 +469,7 @@ tailcall_frame_prev_arch (const frame_info_ptr &this_frame,
/* Virtual tail call frame unwinder if dwarf2_tailcall_sniffer_first finds
a chain to create. */
-const struct frame_unwind dwarf2_tailcall_frame_unwind =
-{
+const struct frame_unwind_legacy dwarf2_tailcall_frame_unwind (
"dwarf2 tailcall",
TAILCALL_FRAME,
FRAME_UNWIND_DEBUGINFO,
@@ -481,7 +480,7 @@ const struct frame_unwind dwarf2_tailcall_frame_unwind =
tailcall_frame_sniffer,
tailcall_frame_dealloc_cache,
tailcall_frame_prev_arch
-};
+);
void _initialize_tailcall_frame ();
void
diff --git a/gdb/dwarf2/frame-tailcall.h b/gdb/dwarf2/frame-tailcall.h
index 3f49487ac2a..3569c7dd3e2 100644
--- a/gdb/dwarf2/frame-tailcall.h
+++ b/gdb/dwarf2/frame-tailcall.h
@@ -34,6 +34,6 @@ extern struct value *
dwarf2_tailcall_prev_register_first (const frame_info_ptr &this_frame,
void **tailcall_cachep, int regnum);
-extern const struct frame_unwind dwarf2_tailcall_frame_unwind;
+extern const struct frame_unwind_legacy dwarf2_tailcall_frame_unwind;
#endif /* !DWARF2_FRAME_TAILCALL_H */
diff --git a/gdb/dwarf2/frame.c b/gdb/dwarf2/frame.c
index 7bbe6cab22d..6386ac20899 100644
--- a/gdb/dwarf2/frame.c
+++ b/gdb/dwarf2/frame.c
@@ -1331,16 +1331,15 @@ dwarf2_frame_sniffer (const struct frame_unwind *self,
if (fde->cie->signal_frame
|| dwarf2_frame_signal_frame_p (get_frame_arch (this_frame),
this_frame))
- return self->type == SIGTRAMP_FRAME;
+ return self->type () == SIGTRAMP_FRAME;
- if (self->type != NORMAL_FRAME)
+ if (self->type () != NORMAL_FRAME)
return 0;
return 1;
}
-static const struct frame_unwind dwarf2_frame_unwind =
-{
+static const struct frame_unwind_legacy dwarf2_frame_unwind (
"dwarf2",
NORMAL_FRAME,
FRAME_UNWIND_DEBUGINFO,
@@ -1350,10 +1349,9 @@ static const struct frame_unwind dwarf2_frame_unwind =
NULL,
dwarf2_frame_sniffer,
dwarf2_frame_dealloc_cache
-};
+);
-static const struct frame_unwind dwarf2_signal_frame_unwind =
-{
+static const struct frame_unwind_legacy dwarf2_signal_frame_unwind (
"dwarf2 signal",
SIGTRAMP_FRAME,
FRAME_UNWIND_DEBUGINFO,
@@ -1365,7 +1363,7 @@ static const struct frame_unwind dwarf2_signal_frame_unwind =
/* TAILCALL_CACHE can never be in such frame to need dealloc_cache. */
NULL
-};
+);
/* Append the DWARF-2 frame unwinders to GDBARCH's list. */
diff --git a/gdb/frame-unwind.c b/gdb/frame-unwind.c
index d867f0e152d..b79caffbd2d 100644
--- a/gdb/frame-unwind.c
+++ b/gdb/frame-unwind.c
@@ -129,7 +129,7 @@ frame_unwind_try_unwinder (const frame_info_ptr &this_frame, void **this_cache,
try
{
- frame_debug_printf ("trying unwinder \"%s\"", unwinder->name);
+ frame_debug_printf ("trying unwinder \"%s\"", unwinder->name ());
res = unwinder->sniffer (unwinder, this_frame, this_cache);
}
catch (const gdb_exception &ex)
@@ -335,6 +335,59 @@ frame_unwind_got_address (const frame_info_ptr &frame, int regnum,
return reg_val;
}
+/* This method just passes the parameters to the callback pointer. */
+enum unwind_stop_reason
+frame_unwind_legacy::stop_reason (const frame_info_ptr &this_frame,
+ void **this_prologue_cache) const
+{
+ return stop_reason_p (this_frame, this_prologue_cache);
+}
+
+/* This method just passes the parameters to the callback pointer. */
+void
+frame_unwind_legacy::this_id (const frame_info_ptr &this_frame,
+ void **this_prologue_cache,
+ struct frame_id *id) const
+{
+ return this_id_p (this_frame, this_prologue_cache, id);
+}
+
+/* This method just passes the parameters to the callback pointer. */
+struct value *
+frame_unwind_legacy::prev_register (const frame_info_ptr &this_frame,
+ void **this_prologue_cache,
+ int regnum) const
+{
+ return prev_register_p (this_frame, this_prologue_cache, regnum);
+}
+
+/* This method just passes the parameters to the callback pointer. */
+int
+frame_unwind_legacy::sniffer (const struct frame_unwind *self,
+ const frame_info_ptr &this_frame,
+ void **this_prologue_cache) const
+{
+ return sniffer_p (self, this_frame, this_prologue_cache);
+}
+
+/* This method just passes the parameters to the callback pointer. */
+void
+frame_unwind_legacy::dealloc_cache (frame_info *self, void *this_cache) const
+{
+ if (dealloc_cache_p != nullptr)
+ dealloc_cache_p (self, this_cache);
+}
+
+/* This method just passes the parameters to the callback pointer. */
+struct gdbarch *
+frame_unwind_legacy::prev_arch (const frame_info_ptr &this_frame,
+ void **this_prologue_cache) const
+{
+ if (prev_arch_p == nullptr)
+ error (_("No prev_arch callback installed"));
+ return prev_arch_p (this_frame, this_prologue_cache);
+}
+
/* Implement "maintenance info frame-unwinders" command. */
static void
@@ -352,9 +405,9 @@ maintenance_info_frame_unwinders (const char *args, int from_tty)
for (const struct frame_unwind *unwinder: table)
{
- const char *name = unwinder->name;
- const char *type = frame_type_str (unwinder->type);
- const char *uclass = frame_unwinder_class_str (unwinder->unwinder_class);
+ const char *name = unwinder->name ();
+ const char *type = frame_type_str (unwinder->type ());
+ const char *uclass = frame_unwinder_class_str (unwinder->unwinder_class ());
ui_out_emit_list tuple_emitter (uiout, nullptr);
uiout->field_string ("name", name);
diff --git a/gdb/frame-unwind.h b/gdb/frame-unwind.h
index deab4f7dbfb..62da34b6ee8 100644
--- a/gdb/frame-unwind.h
+++ b/gdb/frame-unwind.h
@@ -169,25 +169,153 @@ enum frame_unwind_class
FRAME_UNWIND_ARCH,
};
-struct frame_unwind
+class frame_unwind
{
- const char *name;
+ const char *m_name;
/* The frame's type. Should this instead be a collection of
predicates that test the frame for various attributes? */
- enum frame_type type;
+ enum frame_type m_type;
/* What kind of unwinder is this. It generally follows from where
the unwinder was added or where it looks for information to do the
unwinding. */
- enum frame_unwind_class unwinder_class;
+ enum frame_unwind_class m_unwinder_class;
+ const struct frame_data *m_unwind_data;
+public:
+ frame_unwind (const char *name, frame_type type, frame_unwind_class uclass,
+ const struct frame_data *data)
+ : m_name (name), m_type (type), m_unwinder_class (uclass),
+ m_unwind_data (data)
+ { }
+
+ const char *name () const
+ {
+ return m_name;
+ }
+
+ enum frame_type type () const
+ {
+ return m_type;
+ }
+
+ enum frame_unwind_class unwinder_class () const
+ {
+ return m_unwinder_class;
+ }
+
+ const struct frame_data *unwind_data () const
+ {
+ return m_unwind_data;
+ }
+
+ /* Default stop_reason function. It reports NO_REASON, unless the
+ frame is the outermost. */
+ virtual enum unwind_stop_reason stop_reason (const frame_info_ptr &this_frame,
+ void **this_prologue_cache) const
+ {
+ return default_frame_unwind_stop_reason (this_frame, this_prologue_cache);
+ }
+
+ /* Default frame sniffer. Will always return that the unwinder
+ is able to unwind the frame. */
+ virtual int sniffer (const frame_unwind *self,
+ const frame_info_ptr &this_frame,
+ void **this_prologue_cache) const
+ {
+ return 1;
+ }
+
+ /* The following methods are here mostly for interface functionality. They
+ all throw an error when called, as a safe way to check if an unwinder has
+ implemented the desired functionality. */
+
+ /* Calculate the ID of the given frame using this unwinder. */
+ virtual void this_id (const frame_info_ptr &this_frame,
+ void **this_prologue_cache,
+ struct frame_id *id) const
+ {
+ error (_("No method this_id implemented for unwinder %s"), m_name);
+ }
+
+ /* Get the value of a register in a previous frame. */
+ virtual struct value *prev_register (const frame_info_ptr &this_frame,
+ void **this_prologue_cache,
+ int regnum) const
+ {
+ error (_("No method prev_register implemented for unwinder %s"), m_name);
+ }
+
+ /* Properly deallocate the cache. */
+ virtual void dealloc_cache (frame_info *self, void *this_cache) const
+ {
+ error (_("No method dealloc_cache implemented for unwinder %s"), m_name);
+ }
+
+ /* Get the previous architecture. */
+ virtual struct gdbarch *prev_arch (const frame_info_ptr &this_frame,
+ void **this_prologue_cache) const
+ {
+ error (_("No method prev_arch implemented for unwinder %s"), m_name);
+ }
+};
+
+/* This is a legacy version of the frame unwinder. The original struct
+ used function pointers for callbacks, this updated version has a
+ method that just passes the parameters along to the callback
+ pointer.
+ Do not use this class for new unwinders. Instead, see other classes
+ that inherit from frame_unwind, such as the python unwinder. */
+class frame_unwind_legacy : public frame_unwind
+{
+private:
/* Should an attribute indicating the frame's address-in-block go
here? */
- frame_unwind_stop_reason_ftype *stop_reason;
- frame_this_id_ftype *this_id;
- frame_prev_register_ftype *prev_register;
- const struct frame_data *unwind_data;
- frame_sniffer_ftype *sniffer;
- frame_dealloc_cache_ftype *dealloc_cache;
- frame_prev_arch_ftype *prev_arch;
+ frame_unwind_stop_reason_ftype *stop_reason_p;
+ frame_this_id_ftype *this_id_p;
+ frame_prev_register_ftype *prev_register_p;
+ frame_sniffer_ftype *sniffer_p;
+ frame_dealloc_cache_ftype *dealloc_cache_p;
+ frame_prev_arch_ftype *prev_arch_p;
+public:
+ frame_unwind_legacy (const char *n, frame_type t, frame_unwind_class c,
+ frame_unwind_stop_reason_ftype *sr,
+ frame_this_id_ftype *ti,
+ frame_prev_register_ftype *pr,
+ const struct frame_data *ud,
+ frame_sniffer_ftype *s,
+ frame_dealloc_cache_ftype *dc = nullptr,
+ frame_prev_arch_ftype *pa = nullptr)
+ : frame_unwind (n, t, c, ud), stop_reason_p (sr),
+ this_id_p (ti), prev_register_p (pr), sniffer_p (s),
+ dealloc_cache_p (dc), prev_arch_p (pa) { }
+
+ /* This method just passes the parameters to the callback pointer. */
+ enum unwind_stop_reason stop_reason (const frame_info_ptr &this_frame,
+ void **this_prologue_cache) const override;
+
+ /* This method just passes the parameters to the callback pointer. */
+ void this_id (const frame_info_ptr &this_frame, void **this_prologue_cache,
+ struct frame_id *id) const override;
+
+ /* This method just passes the parameters to the callback pointer. */
+ struct value *prev_register (const frame_info_ptr &this_frame,
+ void **this_prologue_cache,
+ int regnum) const override;
+
+ /* This method just passes the parameters to the callback pointer. */
+ int sniffer (const frame_unwind *self,
+ const frame_info_ptr &this_frame,
+ void **this_prologue_cache) const override;
+
+ /* This method just passes the parameters to the callback pointer.
+ It is safe to call this method if no callback is installed, it
+ just turns into a noop. */
+ void dealloc_cache (frame_info *self, void *this_cache) const override;
+
+ /* This method just passes the parameters to the callback pointer.
+ If this function is called with no installed callback, this method
+ will error out. Wrap calls in try-catch blocks. */
+ struct gdbarch *prev_arch (const frame_info_ptr &this_frame,
+ void **this_prologue_cache) const override;
};
/* Register a frame unwinder, _prepending_ it to the front of the
diff --git a/gdb/frame.c b/gdb/frame.c
index 43efac07d95..8e4475dd7ef 100644
--- a/gdb/frame.c
+++ b/gdb/frame.c
@@ -269,12 +269,10 @@ frame_addr_hash_eq (const void *a, const void *b)
static void
frame_info_del (frame_info *frame)
{
- if (frame->prologue_cache != nullptr
- && frame->unwind->dealloc_cache != nullptr)
+ if (frame->prologue_cache != nullptr)
frame->unwind->dealloc_cache (frame, frame->prologue_cache);
- if (frame->base_cache != nullptr
- && frame->base->unwind->dealloc_cache != nullptr)
+ if (frame->base_cache != nullptr)
frame->base->unwind->dealloc_cache (frame, frame->base_cache);
}
@@ -487,12 +485,12 @@ frame_info::to_string () const
res += string_printf ("{level=%d,", fi->level);
if (fi->unwind != NULL)
- res += string_printf ("type=%s,", frame_type_str (fi->unwind->type));
+ res += string_printf ("type=%s,", frame_type_str (fi->unwind->type ()));
else
res += "type=<unknown>,";
if (fi->unwind != NULL)
- res += string_printf ("unwinder=\"%s\",", fi->unwind->name);
+ res += string_printf ("unwinder=\"%s\",", fi->unwind->name ());
else
res += "unwinder=<unknown>,";
@@ -2363,7 +2361,7 @@ get_prev_frame_always_1 (const frame_info_ptr &this_frame)
This check is valid only if this frame and the next frame are NORMAL.
See the comment at frame_id_inner for details. */
if (get_frame_type (this_frame) == NORMAL_FRAME
- && this_frame->next->unwind->type == NORMAL_FRAME
+ && this_frame->next->unwind->type () == NORMAL_FRAME
&& frame_id_inner (get_frame_arch (frame_info_ptr (this_frame->next)),
get_frame_id (this_frame),
get_frame_id (frame_info_ptr (this_frame->next))))
@@ -2991,7 +2989,7 @@ get_frame_type (const frame_info_ptr &frame)
/* Initialize the frame's unwinder because that's what
provides the frame's type. */
frame_unwind_find_by_frame (frame, &frame->prologue_cache);
- return frame->unwind->type;
+ return frame->unwind->type ();
}
struct program_space *
@@ -3072,11 +3070,15 @@ frame_unwind_arch (const frame_info_ptr &next_frame)
if (next_frame->unwind == NULL)
frame_unwind_find_by_frame (next_frame, &next_frame->prologue_cache);
- if (next_frame->unwind->prev_arch != NULL)
- arch = next_frame->unwind->prev_arch (next_frame,
- &next_frame->prologue_cache);
- else
- arch = get_frame_arch (next_frame);
+ try
+ {
+ arch = next_frame->unwind->prev_arch (next_frame,
+ &next_frame->prologue_cache);
+ }
+ catch (gdb_exception &e)
+ {
+ arch = get_frame_arch (next_frame);
+ }
next_frame->prev_arch.arch = arch;
next_frame->prev_arch.p = true;
diff --git a/gdb/frv-linux-tdep.c b/gdb/frv-linux-tdep.c
index 7a7c4904475..4941e4a0741 100644
--- a/gdb/frv-linux-tdep.c
+++ b/gdb/frv-linux-tdep.c
@@ -332,8 +332,7 @@ frv_linux_sigtramp_frame_sniffer (const struct frame_unwind *self,
return 0;
}
-static const struct frame_unwind frv_linux_sigtramp_frame_unwind =
-{
+static const struct frame_unwind_legacy frv_linux_sigtramp_frame_unwind (
"frv linux sigtramp",
SIGTRAMP_FRAME,
FRAME_UNWIND_ARCH,
@@ -342,7 +341,7 @@ static const struct frame_unwind frv_linux_sigtramp_frame_unwind =
frv_linux_sigtramp_frame_prev_register,
NULL,
frv_linux_sigtramp_frame_sniffer
-};
+);
\f
/* The FRV kernel defines ELF_NGREG as 46. We add 2 in order to include
the loadmap addresses in the register set. (See below for more info.) */
diff --git a/gdb/frv-tdep.c b/gdb/frv-tdep.c
index 889397e56cb..3af8e7a4f0e 100644
--- a/gdb/frv-tdep.c
+++ b/gdb/frv-tdep.c
@@ -1405,7 +1405,7 @@ frv_frame_prev_register (const frame_info_ptr &this_frame,
return trad_frame_get_prev_register (this_frame, info->saved_regs, regnum);
}
-static const struct frame_unwind frv_frame_unwind = {
+static const struct frame_unwind_legacy frv_frame_unwind (
"frv prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -1414,7 +1414,7 @@ static const struct frame_unwind frv_frame_unwind = {
frv_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
static CORE_ADDR
frv_frame_base_address (const frame_info_ptr &this_frame, void **this_cache)
diff --git a/gdb/ft32-tdep.c b/gdb/ft32-tdep.c
index 485253d2baf..a2425470e50 100644
--- a/gdb/ft32-tdep.c
+++ b/gdb/ft32-tdep.c
@@ -524,8 +524,7 @@ ft32_frame_prev_register (const frame_info_ptr &this_frame,
return frame_unwind_got_register (this_frame, regnum, regnum);
}
-static const struct frame_unwind ft32_frame_unwind =
-{
+static const struct frame_unwind_legacy ft32_frame_unwind (
"ft32 prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -534,7 +533,7 @@ static const struct frame_unwind ft32_frame_unwind =
ft32_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
/* Return the base address of this_frame. */
diff --git a/gdb/h8300-tdep.c b/gdb/h8300-tdep.c
index 5b4466ed316..a845900d299 100644
--- a/gdb/h8300-tdep.c
+++ b/gdb/h8300-tdep.c
@@ -500,7 +500,7 @@ h8300_frame_prev_register (const frame_info_ptr &this_frame, void **this_cache,
return frame_unwind_got_register (this_frame, regnum, regnum);
}
-static const struct frame_unwind h8300_frame_unwind = {
+static const struct frame_unwind_legacy h8300_frame_unwind (
"h8300 prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -509,7 +509,7 @@ static const struct frame_unwind h8300_frame_unwind = {
h8300_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
static CORE_ADDR
h8300_frame_base_address (const frame_info_ptr &this_frame, void **this_cache)
diff --git a/gdb/hppa-linux-tdep.c b/gdb/hppa-linux-tdep.c
index 2619b60655a..f43a5e73856 100644
--- a/gdb/hppa-linux-tdep.c
+++ b/gdb/hppa-linux-tdep.c
@@ -308,7 +308,7 @@ hppa_linux_sigtramp_frame_sniffer (const struct frame_unwind *self,
return 0;
}
-static const struct frame_unwind hppa_linux_sigtramp_frame_unwind = {
+static const struct frame_unwind_legacy hppa_linux_sigtramp_frame_unwind (
"hppa linux sigtramp",
SIGTRAMP_FRAME,
FRAME_UNWIND_ARCH,
@@ -317,7 +317,7 @@ static const struct frame_unwind hppa_linux_sigtramp_frame_unwind = {
hppa_linux_sigtramp_frame_prev_register,
NULL,
hppa_linux_sigtramp_frame_sniffer
-};
+);
/* Attempt to find (and return) the global pointer for the given
function.
diff --git a/gdb/hppa-tdep.c b/gdb/hppa-tdep.c
index 93765060127..430a18db6e6 100644
--- a/gdb/hppa-tdep.c
+++ b/gdb/hppa-tdep.c
@@ -2283,8 +2283,7 @@ hppa_frame_unwind_sniffer (const struct frame_unwind *self,
return 0;
}
-static const struct frame_unwind hppa_frame_unwind =
-{
+static const struct frame_unwind_legacy hppa_frame_unwind (
"hppa unwind table",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -2293,7 +2292,7 @@ static const struct frame_unwind hppa_frame_unwind =
hppa_frame_prev_register,
NULL,
hppa_frame_unwind_sniffer
-};
+);
/* This is a generic fallback frame unwinder that kicks in if we fail all
the other ones. Normally we would expect the stub and regular unwinder
@@ -2397,8 +2396,7 @@ hppa_fallback_frame_prev_register (const frame_info_ptr &this_frame,
info->saved_regs, regnum);
}
-static const struct frame_unwind hppa_fallback_frame_unwind =
-{
+static const struct frame_unwind_legacy hppa_fallback_frame_unwind (
"hppa prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -2407,7 +2405,7 @@ static const struct frame_unwind hppa_fallback_frame_unwind =
hppa_fallback_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
/* Stub frames, used for all kinds of call stubs. */
struct hppa_stub_unwind_cache
@@ -2480,7 +2478,7 @@ hppa_stub_unwind_sniffer (const struct frame_unwind *self,
return 0;
}
-static const struct frame_unwind hppa_stub_frame_unwind = {
+static const struct frame_unwind_legacy hppa_stub_frame_unwind (
"hppa stub",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -2489,7 +2487,7 @@ static const struct frame_unwind hppa_stub_frame_unwind = {
hppa_stub_frame_prev_register,
NULL,
hppa_stub_unwind_sniffer
-};
+);
CORE_ADDR
hppa_unwind_pc (struct gdbarch *gdbarch, const frame_info_ptr &next_frame)
diff --git a/gdb/i386-obsd-tdep.c b/gdb/i386-obsd-tdep.c
index 1d2b1a09d16..ea8addce599 100644
--- a/gdb/i386-obsd-tdep.c
+++ b/gdb/i386-obsd-tdep.c
@@ -390,7 +390,7 @@ i386obsd_trapframe_sniffer (const struct frame_unwind *self,
|| startswith (name, "Xsoft")));
}
-static const struct frame_unwind i386obsd_trapframe_unwind = {
+static const struct frame_unwind_legacy i386obsd_trapframe_unwind (
"i386 openbsd trap",
/* FIXME: kettenis/20051219: This really is more like an interrupt
frame, but SIGTRAMP_FRAME would print <signal handler called>,
@@ -402,7 +402,7 @@ static const struct frame_unwind i386obsd_trapframe_unwind = {
i386obsd_trapframe_prev_register,
NULL,
i386obsd_trapframe_sniffer
-};
+);
\f
static void
diff --git a/gdb/i386-tdep.c b/gdb/i386-tdep.c
index 3df778d6048..06f3b54fb34 100644
--- a/gdb/i386-tdep.c
+++ b/gdb/i386-tdep.c
@@ -2196,8 +2196,7 @@ i386_frame_prev_register (const frame_info_ptr &this_frame, void **this_cache,
return frame_unwind_got_register (this_frame, regnum, regnum);
}
-static const struct frame_unwind i386_frame_unwind =
-{
+static const struct frame_unwind_legacy i386_frame_unwind (
"i386 prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -2206,7 +2205,7 @@ static const struct frame_unwind i386_frame_unwind =
i386_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
/* Normal frames, but in a function epilogue. */
@@ -2352,8 +2351,7 @@ i386_epilogue_frame_prev_register (const frame_info_ptr &this_frame,
return i386_frame_prev_register (this_frame, this_cache, regnum);
}
-static const struct frame_unwind i386_epilogue_override_frame_unwind =
-{
+static const struct frame_unwind_legacy i386_epilogue_override_frame_unwind (
"i386 epilogue override",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -2362,10 +2360,9 @@ static const struct frame_unwind i386_epilogue_override_frame_unwind =
i386_epilogue_frame_prev_register,
NULL,
i386_epilogue_override_frame_sniffer
-};
+);
-static const struct frame_unwind i386_epilogue_frame_unwind =
-{
+static const struct frame_unwind_legacy i386_epilogue_frame_unwind (
"i386 epilogue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -2374,7 +2371,7 @@ static const struct frame_unwind i386_epilogue_frame_unwind =
i386_epilogue_frame_prev_register,
NULL,
i386_epilogue_frame_sniffer
-};
+);
\f
/* Stack-based trampolines. */
@@ -2447,8 +2444,7 @@ i386_stack_tramp_frame_sniffer (const struct frame_unwind *self,
return 0;
}
-static const struct frame_unwind i386_stack_tramp_frame_unwind =
-{
+static const struct frame_unwind_legacy i386_stack_tramp_frame_unwind (
"i386 stack tramp",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -2457,7 +2453,7 @@ static const struct frame_unwind i386_stack_tramp_frame_unwind =
i386_epilogue_frame_prev_register,
NULL,
i386_stack_tramp_frame_sniffer
-};
+);
\f
/* Generate a bytecode expression to get the value of the saved PC. */
@@ -2597,8 +2593,7 @@ i386_sigtramp_frame_sniffer (const struct frame_unwind *self,
return 0;
}
-static const struct frame_unwind i386_sigtramp_frame_unwind =
-{
+static const struct frame_unwind_legacy i386_sigtramp_frame_unwind (
"i386 sigtramp",
SIGTRAMP_FRAME,
FRAME_UNWIND_ARCH,
@@ -2607,7 +2602,7 @@ static const struct frame_unwind i386_sigtramp_frame_unwind =
i386_sigtramp_frame_prev_register,
NULL,
i386_sigtramp_frame_sniffer
-};
+);
\f
static CORE_ADDR
diff --git a/gdb/ia64-tdep.c b/gdb/ia64-tdep.c
index 8c054c304bd..315db0ad405 100644
--- a/gdb/ia64-tdep.c
+++ b/gdb/ia64-tdep.c
@@ -2162,8 +2162,7 @@ ia64_frame_prev_register (const frame_info_ptr &this_frame, void **this_cache,
}
}
-static const struct frame_unwind ia64_frame_unwind =
-{
+static const struct frame_unwind_legacy ia64_frame_unwind (
"ia64 prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -2172,7 +2171,7 @@ static const struct frame_unwind ia64_frame_unwind =
&ia64_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
/* Signal trampolines. */
@@ -2352,8 +2351,7 @@ ia64_sigtramp_frame_sniffer (const struct frame_unwind *self,
return 0;
}
-static const struct frame_unwind ia64_sigtramp_frame_unwind =
-{
+static const struct frame_unwind_legacy ia64_sigtramp_frame_unwind (
"ia64 sigtramp",
SIGTRAMP_FRAME,
FRAME_UNWIND_ARCH,
@@ -2362,7 +2360,7 @@ static const struct frame_unwind ia64_sigtramp_frame_unwind =
ia64_sigtramp_frame_prev_register,
NULL,
ia64_sigtramp_frame_sniffer
-};
+);
\f
@@ -3013,8 +3011,7 @@ ia64_libunwind_frame_sniffer (const struct frame_unwind *self,
return 0;
}
-static const struct frame_unwind ia64_libunwind_frame_unwind =
-{
+static const struct frame_unwind_legacy ia64_libunwind_frame_unwind (
"ia64 libunwind",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -3024,7 +3021,7 @@ static const struct frame_unwind ia64_libunwind_frame_unwind =
NULL,
ia64_libunwind_frame_sniffer,
libunwind_frame_dealloc_cache
-};
+);
static void
ia64_libunwind_sigtramp_frame_this_id (const frame_info_ptr &this_frame,
@@ -3103,8 +3100,7 @@ ia64_libunwind_sigtramp_frame_sniffer (const struct frame_unwind *self,
return ia64_sigtramp_frame_sniffer (self, this_frame, this_cache);
}
-static const struct frame_unwind ia64_libunwind_sigtramp_frame_unwind =
-{
+static const struct frame_unwind_legacy ia64_libunwind_sigtramp_frame_unwind (
"ia64 libunwind sigtramp",
SIGTRAMP_FRAME,
FRAME_UNWIND_ARCH,
@@ -3113,7 +3109,7 @@ static const struct frame_unwind ia64_libunwind_sigtramp_frame_unwind =
ia64_libunwind_sigtramp_frame_prev_register,
NULL,
ia64_libunwind_sigtramp_frame_sniffer
-};
+);
/* Set of libunwind callback acccessor functions. */
unw_accessors_t ia64_unw_accessors =
diff --git a/gdb/inline-frame.c b/gdb/inline-frame.c
index 2da4cad5f9d..b274ab23125 100644
--- a/gdb/inline-frame.c
+++ b/gdb/inline-frame.c
@@ -264,7 +264,7 @@ inline_frame_sniffer (const struct frame_unwind *self,
return 1;
}
-const struct frame_unwind inline_frame_unwind = {
+const struct frame_unwind_legacy inline_frame_unwind (
"inline",
INLINE_FRAME,
FRAME_UNWIND_GDB,
@@ -273,7 +273,7 @@ const struct frame_unwind inline_frame_unwind = {
inline_frame_prev_register,
NULL,
inline_frame_sniffer
-};
+);
/* Return non-zero if BLOCK, an inlined function block containing PC,
has a group of contiguous instructions starting at PC (but not
diff --git a/gdb/inline-frame.h b/gdb/inline-frame.h
index bbe617c7c5b..a8bd9b07414 100644
--- a/gdb/inline-frame.h
+++ b/gdb/inline-frame.h
@@ -27,7 +27,7 @@ struct process_stratum_target;
/* The inline frame unwinder. */
-extern const struct frame_unwind inline_frame_unwind;
+extern const struct frame_unwind_legacy inline_frame_unwind;
/* Skip all inlined functions whose call sites are at the current PC.
diff --git a/gdb/iq2000-tdep.c b/gdb/iq2000-tdep.c
index e0db1b0de4e..094f627e37b 100644
--- a/gdb/iq2000-tdep.c
+++ b/gdb/iq2000-tdep.c
@@ -424,7 +424,7 @@ iq2000_frame_this_id (const frame_info_ptr &this_frame, void **this_cache,
*this_id = frame_id_build (cache->saved_sp, cache->pc);
}
-static const struct frame_unwind iq2000_frame_unwind = {
+static const struct frame_unwind_legacy iq2000_frame_unwind (
"iq2000 prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -433,7 +433,7 @@ static const struct frame_unwind iq2000_frame_unwind = {
iq2000_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
static CORE_ADDR
iq2000_frame_base_address (const frame_info_ptr &this_frame, void **this_cache)
diff --git a/gdb/jit.c b/gdb/jit.c
index 8f08f75620a..7ac292feed5 100644
--- a/gdb/jit.c
+++ b/gdb/jit.c
@@ -1104,8 +1104,7 @@ jit_frame_prev_register (const frame_info_ptr &this_frame, void **cache, int reg
/* Relay everything back to the unwinder registered by the JIT debug
info reader.*/
-static const struct frame_unwind jit_frame_unwind =
-{
+static const struct frame_unwind_legacy jit_frame_unwind (
"jit",
NORMAL_FRAME,
FRAME_UNWIND_EXTENSION,
@@ -1115,7 +1114,7 @@ static const struct frame_unwind jit_frame_unwind =
NULL,
jit_frame_sniffer,
jit_dealloc_cache
-};
+);
/* This is the information that is stored at jit_gdbarch_data for each
diff --git a/gdb/lm32-tdep.c b/gdb/lm32-tdep.c
index 4eb5f2ad426..c94aef4d839 100644
--- a/gdb/lm32-tdep.c
+++ b/gdb/lm32-tdep.c
@@ -447,7 +447,7 @@ lm32_frame_prev_register (const frame_info_ptr &this_frame,
return trad_frame_get_prev_register (this_frame, info->saved_regs, regnum);
}
-static const struct frame_unwind lm32_frame_unwind = {
+static const struct frame_unwind_legacy lm32_frame_unwind (
"lm32 prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -456,7 +456,7 @@ static const struct frame_unwind lm32_frame_unwind = {
lm32_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
static CORE_ADDR
lm32_frame_base_address (const frame_info_ptr &this_frame, void **this_cache)
diff --git a/gdb/loongarch-tdep.c b/gdb/loongarch-tdep.c
index 891da6a3b78..af6c90c529b 100644
--- a/gdb/loongarch-tdep.c
+++ b/gdb/loongarch-tdep.c
@@ -450,7 +450,7 @@ loongarch_frame_prev_register (const frame_info_ptr &this_frame,
return trad_frame_get_register (info, this_frame, regnum);
}
-static const struct frame_unwind loongarch_frame_unwind = {
+static const struct frame_unwind_legacy loongarch_frame_unwind (
"loongarch prologue",
/*.type =*/NORMAL_FRAME,
/*.unwinder_class=*/FRAME_UNWIND_ARCH,
@@ -460,8 +460,8 @@ static const struct frame_unwind loongarch_frame_unwind = {
/*.unwind_data =*/nullptr,
/*.sniffer =*/default_frame_sniffer,
/*.dealloc_cache =*/nullptr,
- /*.prev_arch =*/nullptr,
-};
+ /*.prev_arch =*/nullptr
+);
/* Write the contents of buffer VAL into the general-purpose argument
register defined by GAR in REGCACHE. GAR indicates the available
diff --git a/gdb/m32c-tdep.c b/gdb/m32c-tdep.c
index 77c109607d7..4d3e0e9c11d 100644
--- a/gdb/m32c-tdep.c
+++ b/gdb/m32c-tdep.c
@@ -1955,7 +1955,7 @@ m32c_prev_register (const frame_info_ptr &this_frame,
}
-static const struct frame_unwind m32c_unwind = {
+static const struct frame_unwind_legacy m32c_unwind (
"m32c prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -1964,7 +1964,7 @@ static const struct frame_unwind m32c_unwind = {
m32c_prev_register,
NULL,
default_frame_sniffer
-};
+);
\f
/* Inferior calls. */
diff --git a/gdb/m32r-linux-tdep.c b/gdb/m32r-linux-tdep.c
index 11a150a92b8..72c18337c4a 100644
--- a/gdb/m32r-linux-tdep.c
+++ b/gdb/m32r-linux-tdep.c
@@ -301,7 +301,7 @@ m32r_linux_sigtramp_frame_sniffer (const struct frame_unwind *self,
return 0;
}
-static const struct frame_unwind m32r_linux_sigtramp_frame_unwind = {
+static const struct frame_unwind_legacy m32r_linux_sigtramp_frame_unwind (
"m32r linux sigtramp",
SIGTRAMP_FRAME,
FRAME_UNWIND_ARCH,
@@ -310,7 +310,7 @@ static const struct frame_unwind m32r_linux_sigtramp_frame_unwind = {
m32r_linux_sigtramp_frame_prev_register,
NULL,
m32r_linux_sigtramp_frame_sniffer
-};
+);
/* Mapping between the registers in `struct pt_regs'
format and GDB's register array layout. */
diff --git a/gdb/m32r-tdep.c b/gdb/m32r-tdep.c
index 1c1130431d4..523ddca14d4 100644
--- a/gdb/m32r-tdep.c
+++ b/gdb/m32r-tdep.c
@@ -831,7 +831,7 @@ m32r_frame_prev_register (const frame_info_ptr &this_frame,
return trad_frame_get_prev_register (this_frame, info->saved_regs, regnum);
}
-static const struct frame_unwind m32r_frame_unwind = {
+static const struct frame_unwind_legacy m32r_frame_unwind (
"m32r prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -840,7 +840,7 @@ static const struct frame_unwind m32r_frame_unwind = {
m32r_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
static CORE_ADDR
m32r_frame_base_address (const frame_info_ptr &this_frame, void **this_cache)
diff --git a/gdb/m68hc11-tdep.c b/gdb/m68hc11-tdep.c
index 909600da2ec..049a4defe54 100644
--- a/gdb/m68hc11-tdep.c
+++ b/gdb/m68hc11-tdep.c
@@ -936,7 +936,7 @@ m68hc11_frame_prev_register (const frame_info_ptr &this_frame,
return value;
}
-static const struct frame_unwind m68hc11_frame_unwind = {
+static const struct frame_unwind_legacy m68hc11_frame_unwind (
"m68hc11 prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -945,7 +945,7 @@ static const struct frame_unwind m68hc11_frame_unwind = {
m68hc11_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
static CORE_ADDR
m68hc11_frame_base_address (const frame_info_ptr &this_frame, void **this_cache)
diff --git a/gdb/m68k-linux-tdep.c b/gdb/m68k-linux-tdep.c
index 7cca4f86394..f7388d952e9 100644
--- a/gdb/m68k-linux-tdep.c
+++ b/gdb/m68k-linux-tdep.c
@@ -314,8 +314,7 @@ m68k_linux_sigtramp_frame_sniffer (const struct frame_unwind *self,
return m68k_linux_pc_in_sigtramp (this_frame);
}
-static const struct frame_unwind m68k_linux_sigtramp_frame_unwind =
-{
+static const struct frame_unwind_legacy m68k_linux_sigtramp_frame_unwind (
"m68k linux sigtramp",
SIGTRAMP_FRAME,
FRAME_UNWIND_ARCH,
@@ -324,7 +323,7 @@ static const struct frame_unwind m68k_linux_sigtramp_frame_unwind =
m68k_linux_sigtramp_frame_prev_register,
NULL,
m68k_linux_sigtramp_frame_sniffer
-};
+);
/* Register maps for supply/collect regset functions. */
diff --git a/gdb/m68k-tdep.c b/gdb/m68k-tdep.c
index 329e197a868..4bcf260dbdb 100644
--- a/gdb/m68k-tdep.c
+++ b/gdb/m68k-tdep.c
@@ -1007,8 +1007,7 @@ m68k_frame_prev_register (const frame_info_ptr &this_frame, void **this_cache,
return frame_unwind_got_register (this_frame, regnum, regnum);
}
-static const struct frame_unwind m68k_frame_unwind =
-{
+static const struct frame_unwind_legacy m68k_frame_unwind (
"m68k prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -1017,7 +1016,7 @@ static const struct frame_unwind m68k_frame_unwind =
m68k_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
\f
static CORE_ADDR
m68k_frame_base_address (const frame_info_ptr &this_frame, void **this_cache)
diff --git a/gdb/mep-tdep.c b/gdb/mep-tdep.c
index 71f37e80680..ce661bc3582 100644
--- a/gdb/mep-tdep.c
+++ b/gdb/mep-tdep.c
@@ -2061,7 +2061,7 @@ mep_frame_prev_register (const frame_info_ptr &this_frame,
}
-static const struct frame_unwind mep_frame_unwind = {
+static const struct frame_unwind_legacy mep_frame_unwind (
"mep prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -2070,7 +2070,7 @@ static const struct frame_unwind mep_frame_unwind = {
mep_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
\f
/* Return values. */
diff --git a/gdb/microblaze-tdep.c b/gdb/microblaze-tdep.c
index 94e8b0cee53..f2df0743c8c 100644
--- a/gdb/microblaze-tdep.c
+++ b/gdb/microblaze-tdep.c
@@ -478,8 +478,7 @@ microblaze_frame_prev_register (const frame_info_ptr &this_frame,
}
-static const struct frame_unwind microblaze_frame_unwind =
-{
+static const struct frame_unwind_legacy microblaze_frame_unwind (
"microblaze prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -488,7 +487,7 @@ static const struct frame_unwind microblaze_frame_unwind =
microblaze_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
\f
static CORE_ADDR
microblaze_frame_base_address (const frame_info_ptr &next_frame,
diff --git a/gdb/mips-sde-tdep.c b/gdb/mips-sde-tdep.c
index 18cb9485639..783e6fd35ab 100644
--- a/gdb/mips-sde-tdep.c
+++ b/gdb/mips-sde-tdep.c
@@ -160,8 +160,7 @@ mips_sde_frame_sniffer (const struct frame_unwind *self,
/* Data structure for the SDE frame unwinder. */
-static const struct frame_unwind mips_sde_frame_unwind =
-{
+static const struct frame_unwind_legacy mips_sde_frame_unwind (
"mips sde sigtramp",
SIGTRAMP_FRAME,
FRAME_UNWIND_ARCH,
@@ -170,7 +169,7 @@ static const struct frame_unwind mips_sde_frame_unwind =
mips_sde_frame_prev_register,
NULL,
mips_sde_frame_sniffer
-};
+);
/* Implement the this_base, this_locals, and this_args hooks
for the normal unwinder. */
diff --git a/gdb/mips-tdep.c b/gdb/mips-tdep.c
index 6b43f08b1dc..bcd2c2c9784 100644
--- a/gdb/mips-tdep.c
+++ b/gdb/mips-tdep.c
@@ -2929,8 +2929,7 @@ mips_insn16_frame_sniffer (const struct frame_unwind *self,
return 0;
}
-static const struct frame_unwind mips_insn16_frame_unwind =
-{
+static const struct frame_unwind_legacy mips_insn16_frame_unwind (
"mips insn16 prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -2939,7 +2938,7 @@ static const struct frame_unwind mips_insn16_frame_unwind =
mips_insn16_frame_prev_register,
NULL,
mips_insn16_frame_sniffer
-};
+);
static CORE_ADDR
mips_insn16_frame_base_address (const frame_info_ptr &this_frame,
@@ -3366,8 +3365,7 @@ mips_micro_frame_sniffer (const struct frame_unwind *self,
return 0;
}
-static const struct frame_unwind mips_micro_frame_unwind =
-{
+static const struct frame_unwind_legacy mips_micro_frame_unwind (
"mips micro prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -3376,7 +3374,7 @@ static const struct frame_unwind mips_micro_frame_unwind =
mips_micro_frame_prev_register,
NULL,
mips_micro_frame_sniffer
-};
+);
static CORE_ADDR
mips_micro_frame_base_address (const frame_info_ptr &this_frame,
@@ -3746,8 +3744,7 @@ mips_insn32_frame_sniffer (const struct frame_unwind *self,
return 0;
}
-static const struct frame_unwind mips_insn32_frame_unwind =
-{
+static const struct frame_unwind_legacy mips_insn32_frame_unwind (
"mips insn32 prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -3756,7 +3753,7 @@ static const struct frame_unwind mips_insn32_frame_unwind =
mips_insn32_frame_prev_register,
NULL,
mips_insn32_frame_sniffer
-};
+);
static CORE_ADDR
mips_insn32_frame_base_address (const frame_info_ptr &this_frame,
@@ -3864,8 +3861,7 @@ mips_stub_frame_sniffer (const struct frame_unwind *self,
return 0;
}
-static const struct frame_unwind mips_stub_frame_unwind =
-{
+static const struct frame_unwind_legacy mips_stub_frame_unwind (
"mips stub",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -3874,7 +3870,7 @@ static const struct frame_unwind mips_stub_frame_unwind =
mips_stub_frame_prev_register,
NULL,
mips_stub_frame_sniffer
-};
+);
static CORE_ADDR
mips_stub_frame_base_address (const frame_info_ptr &this_frame,
diff --git a/gdb/mn10300-tdep.c b/gdb/mn10300-tdep.c
index 565300afd3c..f989bd6c75b 100644
--- a/gdb/mn10300-tdep.c
+++ b/gdb/mn10300-tdep.c
@@ -1127,7 +1127,7 @@ mn10300_frame_prev_register (const frame_info_ptr &this_frame,
return frame_unwind_got_register (this_frame, regnum, regnum);
}
-static const struct frame_unwind mn10300_frame_unwind = {
+static const struct frame_unwind_legacy mn10300_frame_unwind (
"mn10300 prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -1136,7 +1136,7 @@ static const struct frame_unwind mn10300_frame_unwind = {
mn10300_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
static void
mn10300_frame_unwind_init (struct gdbarch *gdbarch)
diff --git a/gdb/moxie-tdep.c b/gdb/moxie-tdep.c
index 82d3478ed68..f69810f83c3 100644
--- a/gdb/moxie-tdep.c
+++ b/gdb/moxie-tdep.c
@@ -585,7 +585,7 @@ moxie_frame_prev_register (const frame_info_ptr &this_frame,
return frame_unwind_got_register (this_frame, regnum, regnum);
}
-static const struct frame_unwind moxie_frame_unwind = {
+static const struct frame_unwind_legacy moxie_frame_unwind (
"moxie prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -594,7 +594,7 @@ static const struct frame_unwind moxie_frame_unwind = {
moxie_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
/* Return the base address of this_frame. */
diff --git a/gdb/msp430-tdep.c b/gdb/msp430-tdep.c
index 7fb5aee5bbe..925e71becc5 100644
--- a/gdb/msp430-tdep.c
+++ b/gdb/msp430-tdep.c
@@ -542,7 +542,7 @@ msp430_prev_register (const frame_info_ptr &this_frame,
return frame_unwind_got_register (this_frame, regnum, regnum);
}
-static const struct frame_unwind msp430_unwind = {
+static const struct frame_unwind_legacy msp430_unwind (
"msp430 prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -551,7 +551,7 @@ static const struct frame_unwind msp430_unwind = {
msp430_prev_register,
NULL,
default_frame_sniffer
-};
+);
/* Implement the "dwarf2_reg_to_regnum" gdbarch method. */
diff --git a/gdb/nds32-tdep.c b/gdb/nds32-tdep.c
index 910a6f7a1d0..e08ead24b4f 100644
--- a/gdb/nds32-tdep.c
+++ b/gdb/nds32-tdep.c
@@ -988,8 +988,7 @@ nds32_frame_prev_register (const frame_info_ptr &this_frame, void **this_cache,
return frame_unwind_got_register (this_frame, regnum, regnum);
}
-static const struct frame_unwind nds32_frame_unwind =
-{
+static const struct frame_unwind_legacy nds32_frame_unwind (
"nds32 prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -997,8 +996,8 @@ static const struct frame_unwind nds32_frame_unwind =
nds32_frame_this_id,
nds32_frame_prev_register,
NULL,
- default_frame_sniffer,
-};
+ default_frame_sniffer
+);
/* Return the frame base address of *THIS_FRAME. */
@@ -1373,8 +1372,7 @@ nds32_epilogue_frame_prev_register (const frame_info_ptr &this_frame,
return frame_unwind_got_register (this_frame, regnum, regnum);
}
-static const struct frame_unwind nds32_epilogue_frame_unwind =
-{
+static const struct frame_unwind_legacy nds32_epilogue_frame_unwind (
"nds32 epilogue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -1383,7 +1381,7 @@ static const struct frame_unwind nds32_epilogue_frame_unwind =
nds32_epilogue_frame_prev_register,
NULL,
nds32_epilogue_frame_sniffer
-};
+);
\f
/* Floating type and struct type that has only one floating type member
diff --git a/gdb/nios2-tdep.c b/gdb/nios2-tdep.c
index 5e68764bd6a..7bb0d5a973f 100644
--- a/gdb/nios2-tdep.c
+++ b/gdb/nios2-tdep.c
@@ -1977,8 +1977,7 @@ nios2_frame_base_address (const frame_info_ptr &this_frame, void **this_cache)
/* Data structures for the normal prologue-analysis-based
unwinder. */
-static const struct frame_unwind nios2_frame_unwind =
-{
+static const struct frame_unwind_legacy nios2_frame_unwind (
"nios2 prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -1987,7 +1986,7 @@ static const struct frame_unwind nios2_frame_unwind =
nios2_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
static const struct frame_base nios2_frame_base =
{
@@ -2079,8 +2078,7 @@ nios2_stub_frame_sniffer (const struct frame_unwind *self,
/* Define the data structures for the stub unwinder. */
-static const struct frame_unwind nios2_stub_frame_unwind =
-{
+static const struct frame_unwind_legacy nios2_stub_frame_unwind (
"nios2 stub",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -2089,7 +2087,7 @@ static const struct frame_unwind nios2_stub_frame_unwind =
nios2_stub_frame_prev_register,
NULL,
nios2_stub_frame_sniffer
-};
+);
diff --git a/gdb/or1k-tdep.c b/gdb/or1k-tdep.c
index 6e0466c3408..bdfad9bfb03 100644
--- a/gdb/or1k-tdep.c
+++ b/gdb/or1k-tdep.c
@@ -1125,7 +1125,7 @@ or1k_frame_prev_register (const frame_info_ptr &this_frame,
/* Data structures for the normal prologue-analysis-based unwinder. */
-static const struct frame_unwind or1k_frame_unwind = {
+static const struct frame_unwind_legacy or1k_frame_unwind (
"or1k prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -1134,8 +1134,8 @@ static const struct frame_unwind or1k_frame_unwind = {
or1k_frame_prev_register,
NULL,
default_frame_sniffer,
- NULL,
-};
+ NULL
+);
/* Architecture initialization for OpenRISC 1000. */
diff --git a/gdb/ppc-fbsd-tdep.c b/gdb/ppc-fbsd-tdep.c
index 12eb396a0e3..0403b5662b8 100644
--- a/gdb/ppc-fbsd-tdep.c
+++ b/gdb/ppc-fbsd-tdep.c
@@ -262,7 +262,7 @@ ppcfbsd_sigtramp_frame_prev_register (const frame_info_ptr &this_frame,
return trad_frame_get_register (cache, this_frame, regnum);
}
-static const struct frame_unwind ppcfbsd_sigtramp_frame_unwind = {
+static const struct frame_unwind_legacy ppcfbsd_sigtramp_frame_unwind (
"ppc freebsd sigtramp",
SIGTRAMP_FRAME,
FRAME_UNWIND_ARCH,
@@ -271,7 +271,7 @@ static const struct frame_unwind ppcfbsd_sigtramp_frame_unwind = {
ppcfbsd_sigtramp_frame_prev_register,
NULL,
ppcfbsd_sigtramp_frame_sniffer
-};
+);
static enum return_value_convention
ppcfbsd_return_value (struct gdbarch *gdbarch, struct value *function,
diff --git a/gdb/ppc-obsd-tdep.c b/gdb/ppc-obsd-tdep.c
index ceb8b5d85db..37be2d18032 100644
--- a/gdb/ppc-obsd-tdep.c
+++ b/gdb/ppc-obsd-tdep.c
@@ -231,7 +231,7 @@ ppcobsd_sigtramp_frame_prev_register (const frame_info_ptr &this_frame,
return trad_frame_get_register (cache, this_frame, regnum);
}
-static const struct frame_unwind ppcobsd_sigtramp_frame_unwind = {
+static const struct frame_unwind_legacy ppcobsd_sigtramp_frame_unwind (
"ppc openbsd sigtramp",
SIGTRAMP_FRAME,
FRAME_UNWIND_ARCH,
@@ -240,7 +240,7 @@ static const struct frame_unwind ppcobsd_sigtramp_frame_unwind = {
ppcobsd_sigtramp_frame_prev_register,
NULL,
ppcobsd_sigtramp_frame_sniffer
-};
+);
\f
static void
diff --git a/gdb/python/py-unwind.c b/gdb/python/py-unwind.c
index 68da62decec..6742c2ca251 100644
--- a/gdb/python/py-unwind.c
+++ b/gdb/python/py-unwind.c
@@ -806,7 +806,7 @@ pyuw_sniffer (const struct frame_unwind *self, const frame_info_ptr &this_frame,
{
PYUW_SCOPED_DEBUG_ENTER_EXIT;
- struct gdbarch *gdbarch = (struct gdbarch *) (self->unwind_data);
+ struct gdbarch *gdbarch = (struct gdbarch *) (self->unwind_data ());
cached_frame_info *cached_frame;
gdbpy_enter enter_py (gdbarch);
@@ -947,6 +947,41 @@ struct pyuw_gdbarch_data_type
static const registry<gdbarch>::key<pyuw_gdbarch_data_type> pyuw_gdbarch_data;
+/* Class for frame unwinders registered by the Python architecture callback. */
+class frame_unwind_python : public frame_unwind
+{
+public:
+ frame_unwind_python (const struct frame_data *newarch)
+ : frame_unwind ("python", NORMAL_FRAME, FRAME_UNWIND_EXTENSION, newarch)
+ { }
+
+ /* No need to override stop_reason, we want the default. */
+
+ int sniffer (const frame_unwind *self, const frame_info_ptr &this_frame,
+ void **this_prologue_cache) const override
+ {
+ return pyuw_sniffer (self, this_frame, this_prologue_cache);
+ }
+
+ void this_id (const frame_info_ptr &this_frame, void **this_prologue_cache,
+ struct frame_id *id) const override
+ {
+ pyuw_this_id (this_frame, this_prologue_cache, id);
+ }
+
+ struct value *prev_register (const frame_info_ptr &this_frame,
+ void **this_prologue_cache,
+ int regnum) const override
+ {
+ return pyuw_prev_register (this_frame, this_prologue_cache, regnum);
+ }
+
+ void dealloc_cache (frame_info *self, void *this_cache) const override
+ {
+ pyuw_dealloc_cache (self, this_cache);
+ }
+};
+
/* New inferior architecture callback: register the Python unwinders
intermediary. */
@@ -960,17 +995,9 @@ pyuw_on_new_gdbarch (gdbarch *newarch)
if (!data->unwinder_registered)
{
struct frame_unwind *unwinder
- = GDBARCH_OBSTACK_ZALLOC (newarch, struct frame_unwind);
-
- unwinder->name = "python";
- unwinder->type = NORMAL_FRAME;
- unwinder->unwinder_class = FRAME_UNWIND_EXTENSION;
- unwinder->stop_reason = default_frame_unwind_stop_reason;
- unwinder->this_id = pyuw_this_id;
- unwinder->prev_register = pyuw_prev_register;
- unwinder->unwind_data = (const struct frame_data *) newarch;
- unwinder->sniffer = pyuw_sniffer;
- unwinder->dealloc_cache = pyuw_dealloc_cache;
+ = obstack_new<frame_unwind_python>
+ (gdbarch_obstack (newarch), (const struct frame_data *) newarch);
+
frame_unwind_prepend_unwinder (newarch, unwinder);
data->unwinder_registered = 1;
}
diff --git a/gdb/record-btrace.c b/gdb/record-btrace.c
index 45f6870bdb6..82ce2a975a1 100644
--- a/gdb/record-btrace.c
+++ b/gdb/record-btrace.c
@@ -1894,8 +1894,7 @@ record_btrace_frame_dealloc_cache (frame_info *self, void *this_cache)
Therefore this unwinder reports any possibly unwound registers as
<unavailable>. */
-const struct frame_unwind record_btrace_frame_unwind =
-{
+const struct frame_unwind_legacy record_btrace_frame_unwind (
"record-btrace",
NORMAL_FRAME,
FRAME_UNWIND_GDB,
@@ -1905,10 +1904,9 @@ const struct frame_unwind record_btrace_frame_unwind =
NULL,
record_btrace_frame_sniffer,
record_btrace_frame_dealloc_cache
-};
+);
-const struct frame_unwind record_btrace_tailcall_frame_unwind =
-{
+const struct frame_unwind_legacy record_btrace_tailcall_frame_unwind (
"record-btrace tailcall",
TAILCALL_FRAME,
FRAME_UNWIND_GDB,
@@ -1918,7 +1916,7 @@ const struct frame_unwind record_btrace_tailcall_frame_unwind =
NULL,
record_btrace_tailcall_frame_sniffer,
record_btrace_frame_dealloc_cache
-};
+);
/* Implement the get_unwinder method. */
diff --git a/gdb/record.h b/gdb/record.h
index f44b3952943..44918ef4242 100644
--- a/gdb/record.h
+++ b/gdb/record.h
@@ -36,8 +36,8 @@ extern struct cmd_list_element *show_record_cmdlist;
extern struct cmd_list_element *info_record_cmdlist;
/* Unwinders for some record targets. */
-extern const struct frame_unwind record_btrace_frame_unwind;
-extern const struct frame_unwind record_btrace_tailcall_frame_unwind;
+extern const struct frame_unwind_legacy record_btrace_frame_unwind;
+extern const struct frame_unwind_legacy record_btrace_tailcall_frame_unwind;
/* A list of different recording methods. */
enum record_method
diff --git a/gdb/riscv-tdep.c b/gdb/riscv-tdep.c
index 29b31dcedcc..9a9cb2cdf5c 100644
--- a/gdb/riscv-tdep.c
+++ b/gdb/riscv-tdep.c
@@ -3900,8 +3900,7 @@ riscv_frame_prev_register (const frame_info_ptr &this_frame,
are the fallback unwinder (DWARF unwinder is used first), we use the
default frame sniffer, which always accepts the frame. */
-static const struct frame_unwind riscv_frame_unwind =
-{
+static const struct frame_unwind_legacy riscv_frame_unwind (
/*.name =*/ "riscv prologue",
/*.type =*/ NORMAL_FRAME,
/*.unwinder_class=*/FRAME_UNWIND_ARCH,
@@ -3911,8 +3910,8 @@ static const struct frame_unwind riscv_frame_unwind =
/*.unwind_data =*/ NULL,
/*.sniffer =*/ default_frame_sniffer,
/*.dealloc_cache =*/ NULL,
- /*.prev_arch =*/ NULL,
-};
+ /*.prev_arch =*/ NULL
+);
/* Extract a set of required target features out of ABFD. If ABFD is
nullptr then a RISCV_GDBARCH_FEATURES is returned in its default state. */
diff --git a/gdb/rl78-tdep.c b/gdb/rl78-tdep.c
index 0fcd5f9f1f3..f4aecce055b 100644
--- a/gdb/rl78-tdep.c
+++ b/gdb/rl78-tdep.c
@@ -1183,8 +1183,7 @@ rl78_prev_register (const frame_info_ptr &this_frame,
return frame_unwind_got_register (this_frame, regnum, regnum);
}
-static const struct frame_unwind rl78_unwind =
-{
+static const struct frame_unwind_legacy rl78_unwind (
"rl78 prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -1193,7 +1192,7 @@ static const struct frame_unwind rl78_unwind =
rl78_prev_register,
NULL,
default_frame_sniffer
-};
+);
/* Implement the "dwarf_reg_to_regnum" gdbarch method. */
diff --git a/gdb/rs6000-aix-tdep.c b/gdb/rs6000-aix-tdep.c
index 3e5c8acff21..d161e2b6eae 100644
--- a/gdb/rs6000-aix-tdep.c
+++ b/gdb/rs6000-aix-tdep.c
@@ -328,7 +328,7 @@ aix_sighandle_frame_sniffer (const struct frame_unwind *self,
/* AIX signal handler frame unwinder */
-static const struct frame_unwind aix_sighandle_frame_unwind = {
+static const struct frame_unwind_legacy aix_sighandle_frame_unwind (
"rs6000 aix sighandle",
SIGTRAMP_FRAME,
FRAME_UNWIND_ARCH,
@@ -337,7 +337,7 @@ static const struct frame_unwind aix_sighandle_frame_unwind = {
aix_sighandle_frame_prev_register,
NULL,
aix_sighandle_frame_sniffer
-};
+);
/* Core file support. */
diff --git a/gdb/rs6000-tdep.c b/gdb/rs6000-tdep.c
index 198703734aa..b841e7fe82c 100644
--- a/gdb/rs6000-tdep.c
+++ b/gdb/rs6000-tdep.c
@@ -3838,8 +3838,7 @@ rs6000_frame_prev_register (const frame_info_ptr &this_frame,
return trad_frame_get_prev_register (this_frame, info->saved_regs, regnum);
}
-static const struct frame_unwind rs6000_frame_unwind =
-{
+static const struct frame_unwind_legacy rs6000_frame_unwind (
"rs6000 prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -3848,7 +3847,7 @@ static const struct frame_unwind rs6000_frame_unwind =
rs6000_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
/* Allocate and initialize a frame cache for an epilogue frame.
SP is restored and prev-PC is stored in LR. */
@@ -3980,8 +3979,7 @@ rs6000_epilogue_frame_sniffer (const struct frame_unwind *self,
/* Frame unwinder for epilogue frame. This is required for reverse step-over
a function without debug information. */
-static const struct frame_unwind rs6000_epilogue_frame_unwind =
-{
+static const struct frame_unwind_legacy rs6000_epilogue_frame_unwind (
"rs6000 epilogue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -3989,7 +3987,7 @@ static const struct frame_unwind rs6000_epilogue_frame_unwind =
rs6000_epilogue_frame_this_id, rs6000_epilogue_frame_prev_register,
NULL,
rs6000_epilogue_frame_sniffer
-};
+);
\f
static CORE_ADDR
diff --git a/gdb/rx-tdep.c b/gdb/rx-tdep.c
index 6cb74c23a3c..18d184851cb 100644
--- a/gdb/rx-tdep.c
+++ b/gdb/rx-tdep.c
@@ -631,7 +631,7 @@ rx_exception_sniffer (const struct frame_unwind *self,
/* Data structure for normal code using instruction-based prologue
analyzer. */
-static const struct frame_unwind rx_frame_unwind = {
+static const struct frame_unwind_legacy rx_frame_unwind (
"rx prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -640,12 +640,12 @@ static const struct frame_unwind rx_frame_unwind = {
rx_frame_prev_register,
NULL,
rx_frame_sniffer
-};
+);
/* Data structure for exception code using instruction-based prologue
analyzer. */
-static const struct frame_unwind rx_exception_unwind = {
+static const struct frame_unwind_legacy rx_exception_unwind (
"rx exception",
/* SIGTRAMP_FRAME could be used here, but backtraces are less informative. */
NORMAL_FRAME,
@@ -655,7 +655,7 @@ static const struct frame_unwind rx_exception_unwind = {
rx_frame_prev_register,
NULL,
rx_exception_sniffer
-};
+);
/* Implement the "push_dummy_call" gdbarch method. */
static CORE_ADDR
diff --git a/gdb/s12z-tdep.c b/gdb/s12z-tdep.c
index 7fa73cf6b8c..faef1a42601 100644
--- a/gdb/s12z-tdep.c
+++ b/gdb/s12z-tdep.c
@@ -441,7 +441,7 @@ s12z_frame_prev_register (const frame_info_ptr &this_frame,
}
/* Data structures for the normal prologue-analysis-based unwinder. */
-static const struct frame_unwind s12z_frame_unwind = {
+static const struct frame_unwind_legacy s12z_frame_unwind (
"s12z prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -450,8 +450,8 @@ static const struct frame_unwind s12z_frame_unwind = {
s12z_frame_prev_register,
NULL,
default_frame_sniffer,
- NULL,
-};
+ NULL
+);
constexpr gdb_byte s12z_break_insn[] = {0x00};
diff --git a/gdb/s390-linux-tdep.c b/gdb/s390-linux-tdep.c
index 556fad64926..96d6d446219 100644
--- a/gdb/s390-linux-tdep.c
+++ b/gdb/s390-linux-tdep.c
@@ -541,7 +541,7 @@ s390_sigtramp_frame_sniffer (const struct frame_unwind *self,
/* S390 sigtramp frame unwinder. */
-static const struct frame_unwind s390_sigtramp_frame_unwind = {
+static const struct frame_unwind_legacy s390_sigtramp_frame_unwind (
"s390 linux sigtramp",
SIGTRAMP_FRAME,
FRAME_UNWIND_ARCH,
@@ -550,7 +550,7 @@ static const struct frame_unwind s390_sigtramp_frame_unwind = {
s390_sigtramp_frame_prev_register,
NULL,
s390_sigtramp_frame_sniffer
-};
+);
/* Syscall handling. */
diff --git a/gdb/s390-tdep.c b/gdb/s390-tdep.c
index bbf88dbcab1..55ce87d66a6 100644
--- a/gdb/s390-tdep.c
+++ b/gdb/s390-tdep.c
@@ -2646,7 +2646,7 @@ s390_frame_prev_register (const frame_info_ptr &this_frame,
/* Default S390 frame unwinder. */
-static const struct frame_unwind s390_frame_unwind = {
+static const struct frame_unwind_legacy s390_frame_unwind (
"s390 prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -2655,7 +2655,7 @@ static const struct frame_unwind s390_frame_unwind = {
s390_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
/* Code stubs and their stack frames. For things like PLTs and NULL
function calls (where there is no true frame and the return address
@@ -2741,7 +2741,7 @@ s390_stub_frame_sniffer (const struct frame_unwind *self,
/* S390 stub frame unwinder. */
-static const struct frame_unwind s390_stub_frame_unwind = {
+static const struct frame_unwind_legacy s390_stub_frame_unwind (
"s390 stub",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -2750,7 +2750,7 @@ static const struct frame_unwind s390_stub_frame_unwind = {
s390_stub_frame_prev_register,
NULL,
s390_stub_frame_sniffer
-};
+);
/* Frame base handling. */
diff --git a/gdb/sentinel-frame.c b/gdb/sentinel-frame.c
index 9fe4036dbbe..c809259920d 100644
--- a/gdb/sentinel-frame.c
+++ b/gdb/sentinel-frame.c
@@ -78,8 +78,7 @@ sentinel_frame_prev_arch (const frame_info_ptr &this_frame,
return cache->regcache->arch ();
}
-const struct frame_unwind sentinel_frame_unwind =
-{
+const struct frame_unwind_legacy sentinel_frame_unwind (
"sentinel",
SENTINEL_FRAME,
FRAME_UNWIND_GDB,
@@ -89,5 +88,5 @@ const struct frame_unwind sentinel_frame_unwind =
NULL,
NULL,
NULL,
- sentinel_frame_prev_arch,
-};
+ sentinel_frame_prev_arch
+);
diff --git a/gdb/sentinel-frame.h b/gdb/sentinel-frame.h
index 1a37ff1f49a..4b498f18940 100644
--- a/gdb/sentinel-frame.h
+++ b/gdb/sentinel-frame.h
@@ -34,6 +34,6 @@ extern void *sentinel_frame_cache (struct regcache *regcache);
/* At present there is only one type of sentinel frame. */
-extern const struct frame_unwind sentinel_frame_unwind;
+extern const struct frame_unwind_legacy sentinel_frame_unwind;
#endif /* !defined (SENTINEL_FRAME_H) */
diff --git a/gdb/sh-tdep.c b/gdb/sh-tdep.c
index f87f0aa27c3..22a19e5dd82 100644
--- a/gdb/sh-tdep.c
+++ b/gdb/sh-tdep.c
@@ -1950,7 +1950,7 @@ sh_frame_this_id (const frame_info_ptr &this_frame, void **this_cache,
*this_id = frame_id_build (cache->saved_sp, cache->pc);
}
-static const struct frame_unwind sh_frame_unwind = {
+static const struct frame_unwind_legacy sh_frame_unwind (
"sh prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -1959,7 +1959,7 @@ static const struct frame_unwind sh_frame_unwind = {
sh_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
static CORE_ADDR
sh_frame_base_address (const frame_info_ptr &this_frame, void **this_cache)
@@ -2017,8 +2017,7 @@ sh_stub_unwind_sniffer (const struct frame_unwind *self,
return 0;
}
-static const struct frame_unwind sh_stub_unwind =
-{
+static const struct frame_unwind_legacy sh_stub_unwind (
"sh stub",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -2027,7 +2026,7 @@ static const struct frame_unwind sh_stub_unwind =
sh_frame_prev_register,
NULL,
sh_stub_unwind_sniffer
-};
+);
/* Implement the stack_frame_destroyed_p gdbarch method.
diff --git a/gdb/sparc-netbsd-tdep.c b/gdb/sparc-netbsd-tdep.c
index 5b3dd067375..bc058dcbf63 100644
--- a/gdb/sparc-netbsd-tdep.c
+++ b/gdb/sparc-netbsd-tdep.c
@@ -248,8 +248,7 @@ sparc32nbsd_sigcontext_frame_sniffer (const struct frame_unwind *self,
return 0;
}
-static const struct frame_unwind sparc32nbsd_sigcontext_frame_unwind =
-{
+static const struct frame_unwind_legacy sparc32nbsd_sigcontext_frame_unwind (
"sparc32 netbsd sigcontext",
SIGTRAMP_FRAME,
FRAME_UNWIND_ARCH,
@@ -258,7 +257,7 @@ static const struct frame_unwind sparc32nbsd_sigcontext_frame_unwind =
sparc32nbsd_sigcontext_frame_prev_register,
NULL,
sparc32nbsd_sigcontext_frame_sniffer
-};
+);
\f
/* Return the address of a system call's alternative return
address. */
diff --git a/gdb/sparc-obsd-tdep.c b/gdb/sparc-obsd-tdep.c
index 049c315fa14..2bc944efca0 100644
--- a/gdb/sparc-obsd-tdep.c
+++ b/gdb/sparc-obsd-tdep.c
@@ -134,8 +134,7 @@ sparc32obsd_sigtramp_frame_sniffer (const struct frame_unwind *self,
return 0;
}
-static const struct frame_unwind sparc32obsd_sigtramp_frame_unwind =
-{
+static const struct frame_unwind_legacy sparc32obsd_sigtramp_frame_unwind (
"sparc32 openbsd sigtramp",
SIGTRAMP_FRAME,
FRAME_UNWIND_ARCH,
@@ -144,7 +143,7 @@ static const struct frame_unwind sparc32obsd_sigtramp_frame_unwind =
sparc32obsd_sigtramp_frame_prev_register,
NULL,
sparc32obsd_sigtramp_frame_sniffer
-};
+);
\f
diff --git a/gdb/sparc-sol2-tdep.c b/gdb/sparc-sol2-tdep.c
index bb9c8a549b1..b6ac8011b7b 100644
--- a/gdb/sparc-sol2-tdep.c
+++ b/gdb/sparc-sol2-tdep.c
@@ -179,8 +179,7 @@ sparc32_sol2_sigtramp_frame_sniffer (const struct frame_unwind *self,
return sol2_sigtramp_p (this_frame);
}
-static const struct frame_unwind sparc32_sol2_sigtramp_frame_unwind =
-{
+static const struct frame_unwind_legacy sparc32_sol2_sigtramp_frame_unwind (
"sparc32 solaris sigtramp",
SIGTRAMP_FRAME,
FRAME_UNWIND_ARCH,
@@ -189,7 +188,7 @@ static const struct frame_unwind sparc32_sol2_sigtramp_frame_unwind =
sparc32_sol2_sigtramp_frame_prev_register,
NULL,
sparc32_sol2_sigtramp_frame_sniffer
-};
+);
\f
diff --git a/gdb/sparc-tdep.c b/gdb/sparc-tdep.c
index 30dd061d8c9..307426ec25b 100644
--- a/gdb/sparc-tdep.c
+++ b/gdb/sparc-tdep.c
@@ -1346,8 +1346,7 @@ sparc32_frame_prev_register (const frame_info_ptr &this_frame,
return frame_unwind_got_register (this_frame, regnum, regnum);
}
-static const struct frame_unwind sparc32_frame_unwind =
-{
+static const struct frame_unwind_legacy sparc32_frame_unwind (
"sparc32 prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -1356,7 +1355,7 @@ static const struct frame_unwind sparc32_frame_unwind =
sparc32_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
\f
static CORE_ADDR
diff --git a/gdb/sparc64-fbsd-tdep.c b/gdb/sparc64-fbsd-tdep.c
index 1d4c075a961..6630a9b51b0 100644
--- a/gdb/sparc64-fbsd-tdep.c
+++ b/gdb/sparc64-fbsd-tdep.c
@@ -196,8 +196,7 @@ sparc64fbsd_sigtramp_frame_sniffer (const struct frame_unwind *self,
return 0;
}
-static const struct frame_unwind sparc64fbsd_sigtramp_frame_unwind =
-{
+static const struct frame_unwind_legacy sparc64fbsd_sigtramp_frame_unwind (
"sparc64 freebsd sigtramp",
SIGTRAMP_FRAME,
FRAME_UNWIND_ARCH,
@@ -206,7 +205,7 @@ static const struct frame_unwind sparc64fbsd_sigtramp_frame_unwind =
sparc64fbsd_sigtramp_frame_prev_register,
NULL,
sparc64fbsd_sigtramp_frame_sniffer
-};
+);
\f
static const struct regset sparc64fbsd_gregset =
diff --git a/gdb/sparc64-netbsd-tdep.c b/gdb/sparc64-netbsd-tdep.c
index 82eb99f57c1..53c49fe1130 100644
--- a/gdb/sparc64-netbsd-tdep.c
+++ b/gdb/sparc64-netbsd-tdep.c
@@ -222,8 +222,7 @@ sparc64nbsd_sigtramp_frame_sniffer (const struct frame_unwind *self,
return 0;
}
-static const struct frame_unwind sparc64nbsd_sigcontext_frame_unwind =
-{
+static const struct frame_unwind_legacy sparc64nbsd_sigcontext_frame_unwind (
"sparc64 netbsd sigcontext",
SIGTRAMP_FRAME,
FRAME_UNWIND_ARCH,
@@ -232,7 +231,7 @@ static const struct frame_unwind sparc64nbsd_sigcontext_frame_unwind =
sparc64nbsd_sigcontext_frame_prev_register,
NULL,
sparc64nbsd_sigtramp_frame_sniffer
-};
+);
\f
static const struct regset sparc64nbsd_gregset =
diff --git a/gdb/sparc64-obsd-tdep.c b/gdb/sparc64-obsd-tdep.c
index e81afa604e7..8596d2fa069 100644
--- a/gdb/sparc64-obsd-tdep.c
+++ b/gdb/sparc64-obsd-tdep.c
@@ -220,8 +220,7 @@ sparc64obsd_sigtramp_frame_sniffer (const struct frame_unwind *self,
return 0;
}
-static const struct frame_unwind sparc64obsd_frame_unwind =
-{
+static const struct frame_unwind_legacy sparc64obsd_frame_unwind (
"sparc64 openbsd sigtramp",
SIGTRAMP_FRAME,
FRAME_UNWIND_ARCH,
@@ -230,7 +229,7 @@ static const struct frame_unwind sparc64obsd_frame_unwind =
sparc64obsd_frame_prev_register,
NULL,
sparc64obsd_sigtramp_frame_sniffer
-};
+);
\f
/* Kernel debugging support. */
@@ -305,8 +304,7 @@ sparc64obsd_trapframe_sniffer (const struct frame_unwind *self,
return 0;
}
-static const struct frame_unwind sparc64obsd_trapframe_unwind =
-{
+static const struct frame_unwind_legacy sparc64obsd_trapframe_unwind (
"sparc64 openbsd trap",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -315,7 +313,7 @@ static const struct frame_unwind sparc64obsd_trapframe_unwind =
sparc64obsd_trapframe_prev_register,
NULL,
sparc64obsd_trapframe_sniffer
-};
+);
\f
/* Threads support. */
diff --git a/gdb/sparc64-sol2-tdep.c b/gdb/sparc64-sol2-tdep.c
index e8d09e2516e..cadbf49788c 100644
--- a/gdb/sparc64-sol2-tdep.c
+++ b/gdb/sparc64-sol2-tdep.c
@@ -182,8 +182,7 @@ sparc64_sol2_sigtramp_frame_sniffer (const struct frame_unwind *self,
return sol2_sigtramp_p (this_frame);
}
-static const struct frame_unwind sparc64_sol2_sigtramp_frame_unwind =
-{
+static const struct frame_unwind_legacy sparc64_sol2_sigtramp_frame_unwind (
"sparc64 solaris sigtramp",
SIGTRAMP_FRAME,
FRAME_UNWIND_ARCH,
@@ -192,7 +191,7 @@ static const struct frame_unwind sparc64_sol2_sigtramp_frame_unwind =
sparc64_sol2_sigtramp_frame_prev_register,
NULL,
sparc64_sol2_sigtramp_frame_sniffer
-};
+);
\f
diff --git a/gdb/sparc64-tdep.c b/gdb/sparc64-tdep.c
index 09774ebcee6..6ad65f0b4b2 100644
--- a/gdb/sparc64-tdep.c
+++ b/gdb/sparc64-tdep.c
@@ -1135,8 +1135,7 @@ sparc64_frame_prev_register (const frame_info_ptr &this_frame, void **this_cache
return frame_unwind_got_register (this_frame, regnum, regnum);
}
-static const struct frame_unwind sparc64_frame_unwind =
-{
+static const struct frame_unwind_legacy sparc64_frame_unwind (
"sparc64 prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -1145,7 +1144,7 @@ static const struct frame_unwind sparc64_frame_unwind =
sparc64_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
\f
static CORE_ADDR
diff --git a/gdb/tic6x-tdep.c b/gdb/tic6x-tdep.c
index bac8ba84ed0..c7e42b154db 100644
--- a/gdb/tic6x-tdep.c
+++ b/gdb/tic6x-tdep.c
@@ -452,8 +452,7 @@ tic6x_frame_base_address (const frame_info_ptr &this_frame, void **this_cache)
return info->base;
}
-static const struct frame_unwind tic6x_frame_unwind =
-{
+static const struct frame_unwind_legacy tic6x_frame_unwind (
"tic6x prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -462,7 +461,7 @@ static const struct frame_unwind tic6x_frame_unwind =
tic6x_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
static const struct frame_base tic6x_frame_base =
{
@@ -516,8 +515,7 @@ tic6x_stub_unwind_sniffer (const struct frame_unwind *self,
return 0;
}
-static const struct frame_unwind tic6x_stub_unwind =
-{
+static const struct frame_unwind_legacy tic6x_stub_unwind (
"tic6x stub",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -526,7 +524,7 @@ static const struct frame_unwind tic6x_stub_unwind =
tic6x_frame_prev_register,
NULL,
tic6x_stub_unwind_sniffer
-};
+);
/* Return the instruction on address PC. */
diff --git a/gdb/tilegx-tdep.c b/gdb/tilegx-tdep.c
index 16cd25f4635..e2247d769df 100644
--- a/gdb/tilegx-tdep.c
+++ b/gdb/tilegx-tdep.c
@@ -900,7 +900,7 @@ tilegx_frame_base_address (const frame_info_ptr &this_frame, void **this_cache)
return cache->base;
}
-static const struct frame_unwind tilegx_frame_unwind = {
+static const struct frame_unwind_legacy tilegx_frame_unwind (
"tilegx prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -910,7 +910,7 @@ static const struct frame_unwind tilegx_frame_unwind = {
NULL, /* const struct frame_data *unwind_data */
default_frame_sniffer, /* frame_sniffer_ftype *sniffer */
NULL /* frame_prev_pc_ftype *prev_pc */
-};
+);
static const struct frame_base tilegx_frame_base = {
&tilegx_frame_unwind,
diff --git a/gdb/tramp-frame.c b/gdb/tramp-frame.c
index 6368f67a2e7..94ca85df007 100644
--- a/gdb/tramp-frame.c
+++ b/gdb/tramp-frame.c
@@ -124,7 +124,7 @@ tramp_frame_sniffer (const struct frame_unwind *self,
const frame_info_ptr &this_frame,
void **this_cache)
{
- const struct tramp_frame *tramp = self->unwind_data->tramp_frame;
+ const struct tramp_frame *tramp = self->unwind_data ()->tramp_frame;
CORE_ADDR pc = get_frame_pc (this_frame);
CORE_ADDR func;
struct tramp_frame_cache *tramp_cache;
@@ -143,6 +143,48 @@ tramp_frame_sniffer (const struct frame_unwind *self,
return 1;
}
+class frame_unwind_trampoline : public frame_unwind
+{
+private:
+ frame_prev_arch_ftype *prev_arch_p;
+public:
+ frame_unwind_trampoline (enum frame_type t, const struct frame_data *d,
+ frame_prev_arch_ftype *pa)
+ : frame_unwind ("trampoline", t, FRAME_UNWIND_GDB, d), prev_arch_p (pa)
+ { }
+
+ int sniffer(const frame_unwind *self, const frame_info_ptr &this_frame,
+ void **this_prologue_cache) const override
+ {
+ return tramp_frame_sniffer (self, this_frame, this_prologue_cache);
+ }
+ void this_id (const frame_info_ptr &this_frame, void **this_prologue_cache,
+ struct frame_id *id) const override
+ {
+ tramp_frame_this_id (this_frame, this_prologue_cache, id);
+ }
+ struct value *prev_register (const frame_info_ptr &this_frame,
+ void **this_prologue_cache,
+ int regnum) const override
+ {
+ return tramp_frame_prev_register (this_frame, this_prologue_cache, regnum);
+ }
+
+ struct gdbarch *prev_arch (const frame_info_ptr &this_frame,
+ void **this_prologue_cache) const override
+ {
+ if (prev_arch_p == nullptr)
+ error (_("No prev_arch callback installed"));
+ return prev_arch_p (this_frame, this_prologue_cache);
+ }
+
+ /* FIXME: This should have a proper algorithm to deallocate the cache,
+ otherwise memory is leaked. This method is empty here just so the
+ migration to c++ classes doesn't add regressions. */
+ void dealloc_cache (frame_info *self, void *this_cache) const override
+ { }
+};
+
void
tramp_frame_prepend_unwinder (struct gdbarch *gdbarch,
const struct tramp_frame *tramp_frame)
@@ -161,16 +203,11 @@ tramp_frame_prepend_unwinder (struct gdbarch *gdbarch,
gdb_assert (tramp_frame->insn_size <= sizeof (tramp_frame->insn[0].bytes));
data = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct frame_data);
- unwinder = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct frame_unwind);
-
data->tramp_frame = tramp_frame;
- unwinder->type = tramp_frame->frame_type;
- unwinder->unwind_data = data;
- unwinder->unwinder_class = FRAME_UNWIND_GDB;
- unwinder->sniffer = tramp_frame_sniffer;
- unwinder->stop_reason = default_frame_unwind_stop_reason;
- unwinder->this_id = tramp_frame_this_id;
- unwinder->prev_register = tramp_frame_prev_register;
- unwinder->prev_arch = tramp_frame->prev_arch;
+
+ unwinder = obstack_new <frame_unwind_trampoline> (gdbarch_obstack (gdbarch),
+ tramp_frame->frame_type,
+ data,
+ tramp_frame->prev_arch);
frame_unwind_prepend_unwinder (gdbarch, unwinder);
}
diff --git a/gdb/v850-tdep.c b/gdb/v850-tdep.c
index 9300aeccf6f..17f7ee07e43 100644
--- a/gdb/v850-tdep.c
+++ b/gdb/v850-tdep.c
@@ -1320,7 +1320,7 @@ v850_frame_this_id (const frame_info_ptr &this_frame, void **this_cache,
*this_id = frame_id_build (cache->saved_regs[E_SP_REGNUM].addr (), cache->pc);
}
-static const struct frame_unwind v850_frame_unwind = {
+static const struct frame_unwind_legacy v850_frame_unwind (
"v850 prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -1329,7 +1329,7 @@ static const struct frame_unwind v850_frame_unwind = {
v850_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
static CORE_ADDR
v850_frame_base_address (const frame_info_ptr &this_frame, void **this_cache)
diff --git a/gdb/vax-tdep.c b/gdb/vax-tdep.c
index 25d07c59376..4660979928c 100644
--- a/gdb/vax-tdep.c
+++ b/gdb/vax-tdep.c
@@ -386,8 +386,7 @@ vax_frame_prev_register (const frame_info_ptr &this_frame,
return trad_frame_get_prev_register (this_frame, cache->saved_regs, regnum);
}
-static const struct frame_unwind vax_frame_unwind =
-{
+static const struct frame_unwind_legacy vax_frame_unwind (
"vax prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -396,7 +395,7 @@ static const struct frame_unwind vax_frame_unwind =
vax_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
\f
static CORE_ADDR
diff --git a/gdb/windows-tdep.c b/gdb/windows-tdep.c
index 8a29a33042f..6d3b835ab36 100644
--- a/gdb/windows-tdep.c
+++ b/gdb/windows-tdep.c
@@ -1321,10 +1321,9 @@ cygwin_sigwrapper_frame_cache (frame_info_ptr this_frame, void **this_cache)
return cache;
}
-static struct value *
-cygwin_sigwrapper_frame_prev_register (const frame_info_ptr &this_frame,
- void **this_cache,
- int regnum)
+struct value *
+cygwin_sigwrapper_frame_unwind::prev_register
+ (const frame_info_ptr &this_frame, void **this_cache, int regnum) const
{
struct gdbarch *gdbarch = get_frame_arch (this_frame);
struct cygwin_sigwrapper_frame_cache *cache
@@ -1340,18 +1339,18 @@ cygwin_sigwrapper_frame_prev_register (const frame_info_ptr &this_frame,
return frame_unwind_got_register (this_frame, regnum, regnum);
}
-static void
-cygwin_sigwrapper_frame_this_id (const frame_info_ptr &this_frame,
- void **this_cache,
- struct frame_id *this_id)
+void
+cygwin_sigwrapper_frame_unwind::this_id (const frame_info_ptr &this_frame,
+ void **this_cache,
+ struct frame_id *this_id) const
{
*this_id = frame_id_build_unavailable_stack (get_frame_func (this_frame));
}
-static int
-cygwin_sigwrapper_frame_sniffer (const struct frame_unwind *self_,
- const frame_info_ptr &this_frame,
- void **this_cache)
+int
+cygwin_sigwrapper_frame_unwind::sniffer (const struct frame_unwind *self_,
+ const frame_info_ptr &this_frame,
+ void **this_cache) const
{
const auto *self = (const struct cygwin_sigwrapper_frame_unwind *) self_;
struct gdbarch *gdbarch = get_frame_arch (this_frame);
@@ -1396,13 +1395,7 @@ cygwin_sigwrapper_frame_sniffer (const struct frame_unwind *self_,
cygwin_sigwrapper_frame_unwind::cygwin_sigwrapper_frame_unwind
(gdb::array_view<const gdb::array_view<const gdb_byte>> patterns_list)
- : frame_unwind (),
- patterns_list (patterns_list)
+ : frame_unwind ("cygwin sigwrapper", NORMAL_FRAME, FRAME_UNWIND_GDB,
+ nullptr), patterns_list (patterns_list)
{
- name = "cygwin sigwrapper";
- type = NORMAL_FRAME;
- stop_reason = default_frame_unwind_stop_reason;
- this_id = cygwin_sigwrapper_frame_this_id;
- prev_register = cygwin_sigwrapper_frame_prev_register;
- sniffer = cygwin_sigwrapper_frame_sniffer;
}
diff --git a/gdb/windows-tdep.h b/gdb/windows-tdep.h
index f122f7aaa61..bdab0962ede 100644
--- a/gdb/windows-tdep.h
+++ b/gdb/windows-tdep.h
@@ -60,8 +60,9 @@ extern bool is_linked_with_cygwin_dll (bfd *abfd);
/* Cygwin sigwapper unwinder. Unwinds signal frames over
sigbe/sigdelayed. */
-struct cygwin_sigwrapper_frame_unwind : public frame_unwind
+class cygwin_sigwrapper_frame_unwind : public frame_unwind
{
+public:
explicit cygwin_sigwrapper_frame_unwind
(gdb::array_view<const gdb::array_view<const gdb_byte>> patterns_list);
@@ -73,6 +74,19 @@ struct cygwin_sigwrapper_frame_unwind : public frame_unwind
If any pattern in the list matches, then the frame is assumed to
be a sigwrapper frame. */
gdb::array_view<const gdb::array_view<const gdb_byte>> patterns_list;
+
+ /* Calculate the frame ID of a cygwin wrapper. */
+ void this_id (const frame_info_ptr &this_frame, void **this_prologue_cache,
+ struct frame_id *id) const override;
+
+ /* Sniff the frame to tell if this unwinder should be used. */
+ int sniffer (const frame_unwind *self, const frame_info_ptr &this_frame,
+ void **this_prologue_cache) const override;
+
+ /* Calculate the value of a given register in the previous frame. */
+ struct value *prev_register (const frame_info_ptr &this_frame,
+ void **this_cache,
+ int regnum) const override;
};
#endif
diff --git a/gdb/xstormy16-tdep.c b/gdb/xstormy16-tdep.c
index e01da4ecab4..e7f4e6fe600 100644
--- a/gdb/xstormy16-tdep.c
+++ b/gdb/xstormy16-tdep.c
@@ -728,7 +728,7 @@ xstormy16_frame_base_address (const frame_info_ptr &this_frame, void **this_cach
return cache->base;
}
-static const struct frame_unwind xstormy16_frame_unwind = {
+static const struct frame_unwind_legacy xstormy16_frame_unwind (
"xstormy16 prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -737,7 +737,7 @@ static const struct frame_unwind xstormy16_frame_unwind = {
xstormy16_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
static const struct frame_base xstormy16_frame_base = {
&xstormy16_frame_unwind,
diff --git a/gdb/xtensa-tdep.c b/gdb/xtensa-tdep.c
index b8b7efb38b0..98624f2be3c 100644
--- a/gdb/xtensa-tdep.c
+++ b/gdb/xtensa-tdep.c
@@ -1496,9 +1496,7 @@ xtensa_frame_prev_register (const frame_info_ptr &this_frame,
}
-static const struct frame_unwind
-xtensa_unwind =
-{
+static const struct frame_unwind_legacy xtensa_unwind (
"xtensa prologue",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -1507,7 +1505,7 @@ xtensa_unwind =
xtensa_frame_prev_register,
NULL,
default_frame_sniffer
-};
+);
static CORE_ADDR
xtensa_frame_base_address (const frame_info_ptr &this_frame, void **this_cache)
diff --git a/gdb/z80-tdep.c b/gdb/z80-tdep.c
index fc42d77fa0f..c71fe5c818b 100644
--- a/gdb/z80-tdep.c
+++ b/gdb/z80-tdep.c
@@ -1063,9 +1063,7 @@ z80_insn_is_jump (struct gdbarch *gdbarch, CORE_ADDR addr)
return 0;
}
-static const struct frame_unwind
-z80_frame_unwind =
-{
+static const struct frame_unwind_legacy z80_frame_unwind (
"z80",
NORMAL_FRAME,
FRAME_UNWIND_ARCH,
@@ -1076,7 +1074,7 @@ z80_frame_unwind =
default_frame_sniffer
/*dealloc_cache*/
/*prev_arch*/
-};
+);
/* Initialize the gdbarch struct for the Z80 arch */
static struct gdbarch *
--
2.45.0
^ permalink raw reply [flat|nested] 9+ messages in thread
* [PATCH v3 4/5] gdb: introduce ability to disable frame unwinders
2024-05-08 14:54 [PATCH v3 0/5] Modernize frame unwinders and add disable feature Guinevere Larsen
` (2 preceding siblings ...)
2024-05-08 14:54 ` [PATCH v3 3/5] gdb: Migrate frame unwinders to use C++ classes Guinevere Larsen
@ 2024-05-08 14:54 ` Guinevere Larsen
2024-05-08 14:54 ` [PATCH v3 5/5] gdb/testsuite: Test for a backtrace through object without debuginfo Guinevere Larsen
2024-05-27 13:40 ` [PATCH v3 0/5] Modernize frame unwinders and add disable feature Guinevere Larsen
5 siblings, 0 replies; 9+ messages in thread
From: Guinevere Larsen @ 2024-05-08 14:54 UTC (permalink / raw)
To: gdb-patches; +Cc: Guinevere Larsen, Eli Zaretskii
Sometimes, in the GDB testsuite, we want to test the ability of specific
unwinders to handle some piece of code. Usually this is done by trying
to outsmart GDB, or by coercing the compiler to remove information that
GDB would rely on. Both approaches have problems as GDB gets smarter
with time, and that compilers might differ in version and behavior, or
simply introduce new useful information. This was requested back in 2003
in PR backtrace/8434.
To improve our ability to thoroughly test GDB, this patch introduces a
new maintenance command that allows a user to disable some unwinders,
based on either the name of the unwinder or on its class. With this
change, it will now be possible for GDB to not find any frame unwinders
for a given frame, which would previously cause GDB to assert. GDB will
now check if any frame unwinder has been disabled, and if some has, it
will just error out instead of asserting.
Unwinders can be disabled or re-enabled in 3 different ways:
* Disabling/enabling all at once (using '-all').
* By specifying an unwinder class to be disabled (option '-class').
* By specifying the name of an unwinder (option '-name').
If you give no options to the command, GDB assumes the input is an
unwinder class. '-class' would make no difference if used, is just here
for completeness.
This command is meant to be used once the inferior is already at the
desired location for the test. An example session would be:
(gdb) start
Temporary breakpoint 1, main () at omp.c:17
17 func();
(gdb) maint frame-unwinder disable ARCH
(gdb) bt
\#0 main () at omp.c:17
(gdb) maint frame-unwinder enable ARCH
(gdb) cont
Continuing.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=8434
Reviewed-By: Eli Zaretskii <eliz@gnu.org>
---
gdb/NEWS | 7 +
gdb/doc/gdb.texinfo | 24 +++
gdb/frame-unwind.c | 154 +++++++++++++++++-
gdb/frame-unwind.h | 13 ++
gdb/testsuite/gdb.base/frame-unwind-disable.c | 21 +++
.../gdb.base/frame-unwind-disable.exp | 114 +++++++++++++
6 files changed, 329 insertions(+), 4 deletions(-)
create mode 100644 gdb/testsuite/gdb.base/frame-unwind-disable.c
create mode 100644 gdb/testsuite/gdb.base/frame-unwind-disable.exp
diff --git a/gdb/NEWS b/gdb/NEWS
index 679295f0507..58dcf262b63 100644
--- a/gdb/NEWS
+++ b/gdb/NEWS
@@ -62,6 +62,13 @@ disable missing-debug-handler LOCUS HANDLER
maintenance info linux-lwps
List all LWPs under control of the linux-nat target.
+maintenance frame-unwinder disable [-all | -name NAME | [-class] CLASS]
+maintenance frame-unwinder enable [-all | -name NAME | [-class] CLASS]
+ Enable or disable frame unwinders. This is only meant to be used when
+ testing unwinders themselves, and you want to ensure that a fallback
+ algorithm won't obscure a regression. GDB is not expected to behave
+ well if you try to execute the inferior with unwinders disabled.
+
set remote thread-options-packet
show remote thread-options-packet
Set/show the use of the thread options packet.
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index 3fc0fafa3cd..a3226d98ff6 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -42096,6 +42096,30 @@ architecture, then enabling this flag does not cause them to be used.
@item maint info frame-unwinders
List the frame unwinders currently in effect, starting with the highest priority. This also lists the unwinder class, which is mostly defined by which area of @value{GDBN} uses it.
+@kindex maint frame-unwinder disable
+@kindex maint frame-unwinder enable
+@item maint frame-unwinder disable [@code{-all} | @code{-name} @var{name} | [@code{-class}] @var{class}]
+@item maint frame-unwinder enable [@code{-all} | @code{-name} @var{name} | [@code{-class}] @var{class}]
+Disable or enable frame unwinders. This is meant only as a testing tool, and
+@value{GDBN} is not guaranteed to work properly if it is unable to find
+valid frame unwinders.
+
+The meaning of each of the invocations are as follows:
+
+@table @samp
+@item @code{-all}
+Disable or enable all unwinders.
+@item @code{-name} @var{name}
+@var{name} is the exact name of the unwinder to be disabled or enabled.
+@item [@code{-class}] @var{class}
+@var{class} is the class of frame unwinders to be disabled or enabled.
+The class may include the prefix @code{FRAME_UNWINDER_}, but it is not
+required.
+@end table
+
+@var{name} and @var{class} are always case insensitive. If no option
+starting wth @code{-} is given, @value{GDBN} assumes @code{-class}.
+
@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 b79caffbd2d..94d6760cd3b 100644
--- a/gdb/frame-unwind.c
+++ b/gdb/frame-unwind.c
@@ -88,6 +88,23 @@ frame_unwinder_class_str (frame_unwind_class uclass)
return location->second;
}
+/* Case insensitive search for a frame_unwind_class based on the given
+ string. */
+static enum frame_unwind_class
+str_to_frame_unwind_class (const char *class_str)
+{
+ const char *prefix = "FRAME_UNWIND_";
+ /* Skip the prefix if present. */
+ if (strncasecmp (class_str, prefix, strlen(prefix)) == 0)
+ class_str += strlen(prefix);
+ for (const auto& it : unwind_class_conversion)
+ {
+ if (strcasecmp(it.second, class_str) == 0)
+ return it.first;
+ }
+ error (_("Unknown frame unwind class: %s"), class_str);
+}
+
void
frame_unwind_prepend_unwinder (struct gdbarch *gdbarch,
const struct frame_unwind *unwinder)
@@ -185,25 +202,47 @@ frame_unwind_find_by_frame (const frame_info_ptr &this_frame, void **this_cache)
const struct frame_unwind *unwinder_from_target;
+ /* If we see a disabled unwinder, we assume some test is being run on
+ GDB, and we don't want to assert at the end of this function. */
+ bool seen_disabled_unwinder = false;
+
unwinder_from_target = target_get_unwinder ();
if (unwinder_from_target != NULL
+ && unwinder_from_target->enabled ()
&& frame_unwind_try_unwinder (this_frame, this_cache,
unwinder_from_target))
return;
+ else if (unwinder_from_target != nullptr
+ && !unwinder_from_target->enabled ())
+ seen_disabled_unwinder = true;
unwinder_from_target = target_get_tailcall_unwinder ();
if (unwinder_from_target != NULL
+ && unwinder_from_target->enabled ()
&& frame_unwind_try_unwinder (this_frame, this_cache,
unwinder_from_target))
return;
+ else if (unwinder_from_target != nullptr
+ && !unwinder_from_target->enabled ())
+ seen_disabled_unwinder |= true;
struct gdbarch *gdbarch = get_frame_arch (this_frame);
std::vector<const frame_unwind *> table = get_frame_unwind_table (gdbarch);
for (auto unwinder: table)
- if (frame_unwind_try_unwinder (this_frame, this_cache, unwinder))
- return;
+ {
+ if (!unwinder->enabled ())
+ {
+ seen_disabled_unwinder |= true;
+ continue;
+ }
+ if (frame_unwind_try_unwinder (this_frame, this_cache, unwinder))
+ return;
+ }
- internal_error (_("frame_unwind_find_by_frame failed"));
+ if (seen_disabled_unwinder)
+ error (_("frame_unwind_find_by_frame failed"));
+ else
+ internal_error (_("frame_unwind_find_by_frame failed"));
}
/* A default frame sniffer which always accepts the frame. Used by
@@ -397,10 +436,11 @@ maintenance_info_frame_unwinders (const char *args, int from_tty)
std::vector<const frame_unwind *> table = get_frame_unwind_table (gdbarch);
ui_out *uiout = current_uiout;
- ui_out_emit_table table_emitter (uiout, 3, -1, "FrameUnwinders");
+ ui_out_emit_table table_emitter (uiout, 4, -1, "FrameUnwinders");
uiout->table_header (27, ui_left, "name", "Name");
uiout->table_header (25, ui_left, "type", "Type");
uiout->table_header (9, ui_left, "class", "Class");
+ uiout->table_header (8, ui_left, "enabled", "Enabled");
uiout->table_body ();
for (const struct frame_unwind *unwinder: table)
@@ -408,15 +448,88 @@ maintenance_info_frame_unwinders (const char *args, int from_tty)
const char *name = unwinder->name ();
const char *type = frame_type_str (unwinder->type ());
const char *uclass = frame_unwinder_class_str (unwinder->unwinder_class ());
+ const char *enabled = (unwinder->enabled ()) ? "Y" : "N";
ui_out_emit_list tuple_emitter (uiout, nullptr);
uiout->field_string ("name", name);
uiout->field_string ("type", type);
uiout->field_string ("class", uclass);
+ uiout->field_string ("enabled", enabled);
uiout->text ("\n");
}
}
+/* Helper function to both enable and disable frame unwinders.
+ if ENABLE is true, this call will be enabling unwinders,
+ otherwise the unwinders will be disabled. */
+static void
+enable_disable_frame_unwinders (const char *args, int from_tty, bool enable)
+{
+ reinit_frame_cache ();
+ if (args == nullptr)
+ error (_("specify which frame unwinder(s) should be %s"),
+ (enable)? "enabled" : "disabled");
+ struct gdbarch* gdbarch = current_inferior ()->arch ();
+ std::vector<const frame_unwind *> unwinder_list
+ = gdbarch_get_unwinder_list (gdbarch);
+
+ /* First see if the user wants to change all unwinders. */
+ if (check_for_argument (&args, "-all"))
+ {
+ for (const frame_unwind *u : unwinder_list)
+ u->set_enabled (enable);
+ return;
+ }
+
+ /* If user entered a specific unwinder name, handle it here. If the
+ unwinder is already at the expected state, error out. */
+ if (check_for_argument (&args, "-name"))
+ {
+ bool did_something = false;
+ for (const frame_unwind *unwinder : unwinder_list)
+ {
+ if (strcasecmp (unwinder->name (), args) == 0)
+ {
+ if (unwinder->enabled () == enable)
+ error (_("unwinder %s is already %s"),
+ unwinder->name (),
+ (unwinder->enabled ()) ? ("enabled") : ("disabled"));
+ unwinder->set_enabled (enable);
+
+ did_something = true;
+ break;
+ }
+ }
+ if (!did_something)
+ error (_("couldn't find unwinder named %s"),args);
+ }
+ else
+ {
+ /* Discard '-class' argument, if provided. */
+ check_for_argument (&args, "-class");
+ enum frame_unwind_class dclass = str_to_frame_unwind_class (args);
+ for (auto unwinder: unwinder_list)
+ {
+ if (unwinder->unwinder_class () == dclass)
+ unwinder->set_enabled (enable);
+ }
+ }
+}
+
+/* Implement "maint frame-unwinders disable" command. */
+static void
+maintenance_disable_frame_unwinders (const char *args, int from_tty)
+{
+ enable_disable_frame_unwinders (args, from_tty, false);
+}
+
+/* Implement "maint frame-unwinders disable" command. */
+static void
+maintenance_enable_frame_unwinders (const char *args, int from_tty)
+{
+ enable_disable_frame_unwinders (args, from_tty, true);
+}
+
void _initialize_frame_unwind ();
void
_initialize_frame_unwind ()
@@ -428,4 +541,37 @@ _initialize_frame_unwind ()
_("List the frame unwinders currently in effect, "
"starting with the highest priority."),
&maintenanceinfolist);
+
+ /* Add "maint frame-unwinder disable/enable". */
+ static struct cmd_list_element *maint_frame_unwinder;
+
+ add_basic_prefix_cmd ("frame-unwinder", class_maintenance,
+ _("Commands handling frame unwinders."),
+ &maint_frame_unwinder, 0, &maintenancelist);
+
+ add_cmd ("disable", class_maintenance, maintenance_disable_frame_unwinders,
+ _("\
+Disable one or more frame unwinder(s).\n\
+Usage: maint frame-unwinder disable [-all | -name NAME | [-class] CLASS]\n\
+\n\
+These are the meanings of the options:\n\
+\t-all - All available unwinders will be disabled\n\
+\t-name - NAME is the exact name of the frame unwinder to be disabled\n\
+\t-class - CLASS is the class of unwinders to be disabled.\n\
+\n\
+UNWINDER and NAME are case insensitive."),
+ & maint_frame_unwinder);
+
+ add_cmd ("enable", class_maintenance, maintenance_enable_frame_unwinders,
+ _("\
+Enable one or more frame unwinder(s).\n\
+Usage: maint frame-unwinder enable [-all | -name NAME | [-class] CLASS]\n\
+\n\
+These are the meanings of the options:\n\
+\t-all - All available unwinders will be enabled\n\
+\t-name - NAME is the exact name of the frame unwinder to be enabled\n\
+\t-class - CLASS is the class of unwinders to be enabled.\n\
+\n\
+UNWINDER and NAME are case insensitive."),
+ & maint_frame_unwinder);
}
diff --git a/gdb/frame-unwind.h b/gdb/frame-unwind.h
index 62da34b6ee8..ffb131310dc 100644
--- a/gdb/frame-unwind.h
+++ b/gdb/frame-unwind.h
@@ -180,6 +180,9 @@ class frame_unwind
unwinding. */
enum frame_unwind_class m_unwinder_class;
const struct frame_data *m_unwind_data;
+
+ /* Whether this unwinder can be used when sniffing. */
+ mutable bool m_enabled = true;
public:
frame_unwind (const char *name, frame_type type, frame_unwind_class uclass,
const struct frame_data *data)
@@ -207,6 +210,16 @@ class frame_unwind
return m_unwind_data;
}
+ bool enabled () const
+ {
+ return m_enabled;
+ }
+
+ void set_enabled (bool state) const
+ {
+ m_enabled = state;
+ }
+
/* Default stop_reason function. It reports NO_REASON, unless the
frame is the outermost. */
virtual enum unwind_stop_reason stop_reason (const frame_info_ptr &this_frame,
diff --git a/gdb/testsuite/gdb.base/frame-unwind-disable.c b/gdb/testsuite/gdb.base/frame-unwind-disable.c
new file mode 100644
index 00000000000..078517c011e
--- /dev/null
+++ b/gdb/testsuite/gdb.base/frame-unwind-disable.c
@@ -0,0 +1,21 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2024 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+int main ()
+{
+ return 0;
+}
diff --git a/gdb/testsuite/gdb.base/frame-unwind-disable.exp b/gdb/testsuite/gdb.base/frame-unwind-disable.exp
new file mode 100644
index 00000000000..4efc87ccfcf
--- /dev/null
+++ b/gdb/testsuite/gdb.base/frame-unwind-disable.exp
@@ -0,0 +1,114 @@
+# Copyright 2024 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+# Test multiple situations in which we may use the maintenance command to
+# disable and enable frame unwinders, and check that they really are
+# disabled when they say the are.
+
+standard_testfile .c
+
+# Proc to check if the unwinder of the given name is in the desired state.
+# STATE can be either Y or N.
+proc check_unwinder_state { unwinder_name state {testname ""} } {
+ if {${testname} == ""} {
+ set testname "checking state ${state} for ${unwinder_name}"
+ }
+ gdb_test "maint info frame-unwinders" \
+ ".*${unwinder_name}\\s+\\w+\\s+\\w+.+${state}.*" \
+ "${testname}"
+}
+
+proc check_unwinder_class { unwinder_class state {testname ""} } {
+ set should_pass true
+ if {$testname == ""} {
+ set testname "checking if $unwinder_class state is $state"
+ }
+ gdb_test_multiple "maint info frame-unwinders" "collect for $testname" -lbl {
+ -re "^\\w+\\s+\\w+\\s+${unwinder_class}\\s+\(.\)\\s+" {
+ set cur_state $expec_out(1, string)
+ if {$cur_state != $state} {
+ set should_pass false
+ }
+ exp_continue
+ }
+ -re "${::gdb_prompt} $" {
+ pass $gdb_test_name
+ }
+ }
+
+ gdb_assert {$should_pass == true} "$testname"
+}
+
+if {[prepare_for_testing "failed to prepare" ${testfile} ${srcfile} ]} {
+ return -1
+}
+
+if {![runto_main]} {
+ untested "couldn't run to main"
+ return
+}
+
+# Test disabling all unwinders
+check_unwinder_class "FRAME_UNWIND_\\w+" "Y" \
+ "Checking all unwinders before any changes"
+gdb_test_no_output "maint frame-unwinder disable -all"
+check_unwinder_class "FRAME_UNWIND_\\w+" "N" \
+ "Checking all unwinders were properly disabled"
+
+# Test if GDB can still make a backtrace once all unwinders are disabled.
+# It should be impossible.
+gdb_test "backtrace" ".*frame_unwind_find_by_frame failed.*" \
+ "confirm that no suitable unwinders are found"
+
+# Reenable all unwinders
+gdb_test_no_output "maint frame-unwinder enable -all"
+check_unwinder_class "FRAME_UNWIND_\\w+" "Y" \
+ "Checking all unwinders after re-enabling them all"
+
+# Check that we are able to get backtraces once again.
+gdb_test "backtrace" ".0\\s+main .. at.*" \
+ "confirm we now get usable backtraces"
+
+# Check if we can disable an unwinder based on the name.
+check_unwinder_state "dummy" "Y"
+gdb_test_no_output "maint frame-unwinder disable -name dummy"
+check_unwinder_state "dummy" "N"
+# And verify what happens if you try to disable it again.
+gdb_test "maint frame-unwinder disable -name dummy" \
+ "unwinder dummy is already disabled" \
+ "disable already disabled unwinder"
+check_unwinder_state "dummy" "N" "check if dummy continues disabled"
+
+foreach class {GDB ARCH DEBUGINFO EXTENSION} {
+ # Disable all unwinders of type CLASS, and check that the command worked.
+ gdb_test_no_output "maint frame-unwinder disable ${class}"
+ check_unwinder_class "FRAME_UNWINDER_${class}" "N"
+}
+
+# Now check if we are able to enable a single unwinder, and what happens if we
+# enable it twice.
+gdb_test_no_output "maint frame-unwinder enable -name dummy"
+check_unwinder_state "dummy" "Y" "successfully enabled dummy unwinder"
+gdb_test "maint frame-unwinder enable -name dummy" \
+ "unwinder dummy is already enabled" \
+ "enable already enabled unwinder"
+check_unwinder_state "dummy" "Y" "check if dummy continues enabled"
+
+foreach class {GDB ARCH DEBUGINFO EXTENSION} {
+ # Enable all unwinders of type CLASS, and check that the command worked.
+ # using "-class" option to ensure it works. Should make no difference.
+ gdb_test_no_output "maint frame-unwinder enable -class ${class}"
+ check_unwinder_class "FRAME_UNWINDER_${class}" "Y"
+}
--
2.45.0
^ permalink raw reply [flat|nested] 9+ messages in thread
* [PATCH v3 5/5] gdb/testsuite: Test for a backtrace through object without debuginfo
2024-05-08 14:54 [PATCH v3 0/5] Modernize frame unwinders and add disable feature Guinevere Larsen
` (3 preceding siblings ...)
2024-05-08 14:54 ` [PATCH v3 4/5] gdb: introduce ability to disable frame unwinders Guinevere Larsen
@ 2024-05-08 14:54 ` Guinevere Larsen
2024-05-27 13:40 ` [PATCH v3 0/5] Modernize frame unwinders and add disable feature Guinevere Larsen
5 siblings, 0 replies; 9+ messages in thread
From: Guinevere Larsen @ 2024-05-08 14:54 UTC (permalink / raw)
To: gdb-patches; +Cc: Guinevere Larsen, Jan Kratochvil
Fedora has been carrying this test since back in the Project Archer
days. A change back then caused GDB to stop being able to backtrace when
only some of the object files had debug information. Even though the
changed code never seems to have made its way into the main GDB project,
I think it makes sense to bring the test along to ensure something like
this doesn't pass unnoticed.
Co-Authored-By: Jan Kratochvil <jan@jankratochvil.net>
---
.../backtrace-through-cu-nodebug-caller.c | 28 ++++++
.../backtrace-through-cu-nodebug-main.c | 32 +++++++
.../gdb.base/backtrace-through-cu-nodebug.exp | 87 +++++++++++++++++++
3 files changed, 147 insertions(+)
create mode 100644 gdb/testsuite/gdb.base/backtrace-through-cu-nodebug-caller.c
create mode 100644 gdb/testsuite/gdb.base/backtrace-through-cu-nodebug-main.c
create mode 100644 gdb/testsuite/gdb.base/backtrace-through-cu-nodebug.exp
diff --git a/gdb/testsuite/gdb.base/backtrace-through-cu-nodebug-caller.c b/gdb/testsuite/gdb.base/backtrace-through-cu-nodebug-caller.c
new file mode 100644
index 00000000000..a33f86d1ece
--- /dev/null
+++ b/gdb/testsuite/gdb.base/backtrace-through-cu-nodebug-caller.c
@@ -0,0 +1,28 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2005-2023 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+typedef int (*callback_t) (void);
+
+int
+caller (callback_t callback)
+{
+ /* Ensure some frame content to push away the return address. */
+ volatile const long one = 1;
+
+ /* Modify the return value to prevent any tail-call optimization. */
+ return (*callback) () - one;
+}
diff --git a/gdb/testsuite/gdb.base/backtrace-through-cu-nodebug-main.c b/gdb/testsuite/gdb.base/backtrace-through-cu-nodebug-main.c
new file mode 100644
index 00000000000..f958c0200c7
--- /dev/null
+++ b/gdb/testsuite/gdb.base/backtrace-through-cu-nodebug-main.c
@@ -0,0 +1,32 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2005-2023 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+typedef int (*callback_t) (void);
+
+extern int caller (callback_t callback);
+
+int
+callback (void)
+{
+ return 1;
+}
+
+int
+main (void)
+{
+ return caller (callback);
+}
diff --git a/gdb/testsuite/gdb.base/backtrace-through-cu-nodebug.exp b/gdb/testsuite/gdb.base/backtrace-through-cu-nodebug.exp
new file mode 100644
index 00000000000..89122c26138
--- /dev/null
+++ b/gdb/testsuite/gdb.base/backtrace-through-cu-nodebug.exp
@@ -0,0 +1,87 @@
+# Copyright 2010-2023 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+# Test that GDB can generate accurate backtraces even if some of the stack
+# trace goes through a function with no debug information.
+
+standard_testfile -caller.c -main.c
+set objmainfile ${testfile}-main.o
+set objcallerfile ${testfile}-caller.o
+
+# recompile the inferior with or without CFI information, then run the
+# inferior until the point where the important test starts
+# returns TRUE on an ERROR.
+proc prepare_test {has_cfi} {
+ global srcdir subdir srcfile srcfile2 objmainfile objcallerfile binfile
+ if {$has_cfi} {
+ set extension "cfi"
+ if {[gdb_compile "${srcdir}/${subdir}/${srcfile}" ${objcallerfile} \
+ object [list {additional_flags=-fomit-frame-pointer \
+ -funwind-tables -fasynchronous-unwind-tables}]] != "" } {
+ untested "couldn't compile without cfi"
+ return true
+ }
+ } else {
+ set extension "no-cfi"
+ if {[gdb_compile "${srcdir}/${subdir}/${srcfile}" ${objcallerfile} \
+ object [list {additional_flags=-fomit-frame-pointer \
+ -fno-unwind-tables \
+ -fno-asynchronous-unwind-tables}]] != "" } {
+ untested "couldn't compile with cfi"
+ return true
+ }
+ }
+ if {[gdb_compile "${objmainfile} ${objcallerfile}" \
+ "${binfile}-${extension}" binfile {}] != ""} {
+ untested "couldn't link object files"
+ return true
+ }
+
+ clean_restart "$binfile-${extension}"
+
+ with_test_prefix "${extension}" {
+
+ if ![runto callback] then {
+ fail "has_cfi=$has_cfi: Can't run to callback"
+ return true
+ }
+ gdb_test_no_output "main frame-unwinder disable ARCH"
+ return false
+ }
+}
+
+if {[gdb_compile "${srcdir}/${subdir}/${srcfile2}" ${objmainfile} \
+ object {debug}] != "" } {
+ untested "couldn't compile main file"
+ return
+}
+
+if { [prepare_test false] } {
+ untested ${testfile}.exp
+} else {
+ gdb_test "bt" "frame_unwind_find_by_frame failed.*" \
+ "verify unwind fail without CFI"
+}
+
+if { [prepare_test true] } {
+ untested ${testfile}.exp
+} else {
+ # #0 callback () at ...
+ # #1 0x00000000004004e9 in caller ()
+ # #2 0x00000000004004cd in main () at ...
+ gdb_test "bt" \
+ "#0 +callback \[^\r\n\]+\r\n#1 \[^\r\n\]+ in caller \[^\r\n\]+\r\n#2 \[^\r\n\]+ in main \[^\r\n\]+" \
+ "verify unwinding works for CFI without DIEs"
+}
--
2.45.0
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH v3 2/5] gdb: add "unwinder class" to frame unwinders
[not found] ` <86zft088sm.fsf@gnu.org>
@ 2024-05-08 19:40 ` Guinevere Larsen
2024-05-09 13:55 ` Tom Tromey
0 siblings, 1 reply; 9+ messages in thread
From: Guinevere Larsen @ 2024-05-08 19:40 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: gdb-patches
On 5/8/24 15:20, Eli Zaretskii wrote:
>> From: Guinevere Larsen <blarsen@redhat.com>
>> Cc: Guinevere Larsen <blarsen@redhat.com>
>> Date: Wed, 8 May 2024 11:54:52 -0300
>>
>> A future patch will add a way to disable certain unwinders based on
>> different characteristics. This patch aims to make it more convenient
>> to disable related unwinders in bulk, such as architecture specific
>> ones, by indentifying all unwinders by which part of the code adds it.
>> The classes, and explanations, are as follows:
>>
>> * GDB: An internal unwinder, added by GDB core, such as the unwinder
>> for dummy frames;
>> * EXTENSION: Unwinders added by extension languages;
>> * DEBUGINFO: Unwinders installed by the debug info reader;
>> * ARCH: Unwinders installed by the architecture specific code.
> Thanks. I wonder whether some of the above should in the manual as
> well.
>> diff --git a/gdb/NEWS b/gdb/NEWS
>> index 050f6f96e62..679295f0507 100644
>> --- a/gdb/NEWS
>> +++ b/gdb/NEWS
>> @@ -32,6 +32,10 @@ maintenance info line-table
>> if the line is considered the start of the epilgoue, and thus a point at
>> which the frame can be considered destroyed.
>>
>> +mainenance info frame-unwinders
>> + Add a CLASS column to the output. This class is a somewhat arbitrary
>> + grouping of unwinders, based on which area of GDB adds the unwinder.
> This part is okay.
>
>> diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
>> index 61f91ef4ad6..3fc0fafa3cd 100644
>> --- a/gdb/doc/gdb.texinfo
>> +++ b/gdb/doc/gdb.texinfo
>> @@ -42094,7 +42094,7 @@ 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.
>> +List the frame unwinders currently in effect, starting with the highest priority. This also lists the unwinder class, which is mostly defined by which area of @value{GDBN} uses it.
> This is also okay, but please split the long line into a few, so that
> each line is shorter than 79 characters. And also please consider
> adding the list of currently known classes to the above description.
>
> Reviewed-By: Eli Zaretskii <eliz@gnu.org>
>
Thanks for the quick review! I added the following diff to fix the comments:
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index a3226d98ff6..862dd152ab2 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -42094,7 +42094,16 @@ 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. This also lists the unwinder class, which is mostly defined
by which area of @value{GDBN} uses it.
+List the frame unwinders currently in effect, starting with the highest
+priority. This also lists the unwinder class, which is mostly defined by
+which area of @value{GDBN} uses it. The currently available classes are:
+
+@table @samp
+@item GDB: An internal unwinder, added by GDB core;
+@item EXTENSION: Unwinders added by extension languages;
+@item DEBUGINFO: Unwinders installed by debug information readers;
+@item ARCH: Unwinders isntalled by the architecture specific code.
+@end table
@kindex maint frame-unwinder disable
@kindex maint frame-unwinder enable
--
Cheers,
Guinevere Larsen
She/Her/Hers
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH v3 2/5] gdb: add "unwinder class" to frame unwinders
2024-05-08 19:40 ` Guinevere Larsen
@ 2024-05-09 13:55 ` Tom Tromey
0 siblings, 0 replies; 9+ messages in thread
From: Tom Tromey @ 2024-05-09 13:55 UTC (permalink / raw)
To: Guinevere Larsen; +Cc: Eli Zaretskii, gdb-patches
>>>>> "Guinevere" == Guinevere Larsen <blarsen@redhat.com> writes:
Guinevere> +@item ARCH: Unwinders isntalled by the architecture specific code.
I happened to notice that "installed" has a typo here.
Tom
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH v3 0/5] Modernize frame unwinders and add disable feature
2024-05-08 14:54 [PATCH v3 0/5] Modernize frame unwinders and add disable feature Guinevere Larsen
` (4 preceding siblings ...)
2024-05-08 14:54 ` [PATCH v3 5/5] gdb/testsuite: Test for a backtrace through object without debuginfo Guinevere Larsen
@ 2024-05-27 13:40 ` Guinevere Larsen
5 siblings, 0 replies; 9+ messages in thread
From: Guinevere Larsen @ 2024-05-27 13:40 UTC (permalink / raw)
To: Guinevere Larsen, gdb-patches
Now that we've branched, we should be safe to merge this change, so...
ping :)
--
Cheers,
Guinevere Larsen
She/Her/Hers
On 5/8/24 11:54, Guinevere Larsen wrote:
> This patch series started with me trying to make it easier to test GDB's
> ability to unwind using CFI data, to improve a previous patch I sent to
> the list.
>
> The first patch is just a minor change, storing frame unwinders in a
> vector instead of through an unwinder table accessible using the
> registry system. This isn't required (like I originally thought it was),
> but it does make the whole system more readable in my opinion.
>
> Patch 3 has the real meat of the modernization, making GDB use
> polymorphism to handle frame unwinders. This is slightly slower than
> using function pointers, but much more readable in my opinion.
>
> As for the unwinder classes, they were chosen somewhat arbitrarily,
> mostly based on where I found an unwinder and its name.
>
> Despite sending it now, I don't think this patch series should be merged before gdb 15 is branched.
>
> Changes for v3:
> * Fixed Linaro CI issue in 32 bit arm
> * Fixed the few comments from Eli.
> * Documented addition of unwinder class in the oatch that adds it.
>
> Changes for v2:
> * Added back the test that checks if GDB can handle a mix of CUs with
> and without debuginfo in a single backtrace.
> * Fixed all the nitpicks for style.
> * Removed FRAME_UNWIND_ prefix when talking about classes
> * Thoroughly changed the documentation, to be more readable
>
>
> Guinevere Larsen (5):
> gdb: make gdbarch store a vector of frame unwinders
> gdb: add "unwinder class" to frame unwinders
> gdb: Migrate frame unwinders to use C++ classes
> gdb: introduce ability to disable frame unwinders
> gdb/testsuite: Test for a backtrace through object without debuginfo
>
> gdb/NEWS | 11 +
> gdb/aarch64-tdep.c | 12 +-
> gdb/alpha-mdebug-tdep.c | 6 +-
> gdb/alpha-tdep.c | 12 +-
> gdb/amd64-obsd-tdep.c | 6 +-
> gdb/amd64-tdep.c | 24 +-
> gdb/amd64-windows-tdep.c | 6 +-
> gdb/amdgpu-tdep.c | 7 +-
> gdb/arc-tdep.c | 10 +-
> gdb/arch-utils.c | 8 +
> gdb/arm-tdep.c | 29 +-
> gdb/avr-tdep.c | 5 +-
> gdb/bfin-tdep.c | 6 +-
> gdb/bpf-tdep.c | 6 +-
> gdb/cris-tdep.c | 12 +-
> gdb/csky-tdep.c | 10 +-
> gdb/doc/gdb.texinfo | 26 +-
> gdb/dummy-frame.c | 8 +-
> gdb/dummy-frame.h | 2 +-
> gdb/dwarf2/frame-tailcall.c | 6 +-
> gdb/dwarf2/frame-tailcall.h | 2 +-
> gdb/dwarf2/frame.c | 16 +-
> gdb/frame-unwind.c | 335 ++++++++++++++----
> gdb/frame-unwind.h | 178 +++++++++-
> gdb/frame.c | 28 +-
> gdb/frv-linux-tdep.c | 6 +-
> gdb/frv-tdep.c | 5 +-
> gdb/ft32-tdep.c | 6 +-
> gdb/gdbarch.c | 3 +
> gdb/gdbarch.h | 5 +
> gdb/gdbarch.py | 3 +
> gdb/h8300-tdep.c | 5 +-
> gdb/hppa-linux-tdep.c | 5 +-
> gdb/hppa-tdep.c | 17 +-
> gdb/i386-obsd-tdep.c | 5 +-
> gdb/i386-tdep.c | 30 +-
> gdb/ia64-tdep.c | 24 +-
> gdb/inline-frame.c | 5 +-
> gdb/inline-frame.h | 2 +-
> gdb/iq2000-tdep.c | 5 +-
> gdb/jit.c | 6 +-
> gdb/lm32-tdep.c | 5 +-
> gdb/loongarch-tdep.c | 7 +-
> gdb/m32c-tdep.c | 5 +-
> gdb/m32r-linux-tdep.c | 5 +-
> gdb/m32r-tdep.c | 5 +-
> gdb/m68hc11-tdep.c | 5 +-
> gdb/m68k-linux-tdep.c | 6 +-
> gdb/m68k-tdep.c | 6 +-
> gdb/mep-tdep.c | 5 +-
> gdb/microblaze-tdep.c | 6 +-
> gdb/mips-sde-tdep.c | 6 +-
> gdb/mips-tdep.c | 24 +-
> gdb/mn10300-tdep.c | 5 +-
> gdb/moxie-tdep.c | 5 +-
> gdb/msp430-tdep.c | 5 +-
> gdb/nds32-tdep.c | 14 +-
> gdb/nios2-tdep.c | 12 +-
> gdb/or1k-tdep.c | 7 +-
> gdb/ppc-fbsd-tdep.c | 5 +-
> gdb/ppc-obsd-tdep.c | 5 +-
> gdb/python/py-unwind.c | 50 ++-
> gdb/record-btrace.c | 12 +-
> gdb/record.h | 4 +-
> gdb/riscv-tdep.c | 8 +-
> gdb/rl78-tdep.c | 6 +-
> gdb/rs6000-aix-tdep.c | 5 +-
> gdb/rs6000-tdep.c | 12 +-
> gdb/rx-tdep.c | 10 +-
> gdb/s12z-tdep.c | 7 +-
> gdb/s390-linux-tdep.c | 5 +-
> gdb/s390-tdep.c | 10 +-
> gdb/sentinel-frame.c | 8 +-
> gdb/sentinel-frame.h | 2 +-
> gdb/sh-tdep.c | 11 +-
> gdb/sparc-netbsd-tdep.c | 6 +-
> gdb/sparc-obsd-tdep.c | 6 +-
> gdb/sparc-sol2-tdep.c | 6 +-
> gdb/sparc-tdep.c | 6 +-
> gdb/sparc64-fbsd-tdep.c | 6 +-
> gdb/sparc64-netbsd-tdep.c | 6 +-
> gdb/sparc64-obsd-tdep.c | 12 +-
> gdb/sparc64-sol2-tdep.c | 6 +-
> gdb/sparc64-tdep.c | 6 +-
> .../backtrace-through-cu-nodebug-caller.c | 28 ++
> .../backtrace-through-cu-nodebug-main.c | 32 ++
> .../gdb.base/backtrace-through-cu-nodebug.exp | 87 +++++
> gdb/testsuite/gdb.base/frame-unwind-disable.c | 21 ++
> .../gdb.base/frame-unwind-disable.exp | 114 ++++++
> gdb/tic6x-tdep.c | 12 +-
> gdb/tilegx-tdep.c | 5 +-
> gdb/tramp-frame.c | 58 ++-
> gdb/v850-tdep.c | 5 +-
> gdb/vax-tdep.c | 6 +-
> gdb/windows-tdep.c | 33 +-
> gdb/windows-tdep.h | 16 +-
> gdb/xstormy16-tdep.c | 5 +-
> gdb/xtensa-tdep.c | 7 +-
> gdb/z80-tdep.c | 7 +-
> 99 files changed, 1247 insertions(+), 445 deletions(-)
> create mode 100644 gdb/testsuite/gdb.base/backtrace-through-cu-nodebug-caller.c
> create mode 100644 gdb/testsuite/gdb.base/backtrace-through-cu-nodebug-main.c
> create mode 100644 gdb/testsuite/gdb.base/backtrace-through-cu-nodebug.exp
> create mode 100644 gdb/testsuite/gdb.base/frame-unwind-disable.c
> create mode 100644 gdb/testsuite/gdb.base/frame-unwind-disable.exp
>
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2024-05-27 13:40 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
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2024-05-08 14:54 [PATCH v3 0/5] Modernize frame unwinders and add disable feature Guinevere Larsen
2024-05-08 14:54 ` [PATCH v3 1/5] gdb: make gdbarch store a vector of frame unwinders Guinevere Larsen
2024-05-08 14:54 ` [PATCH v3 2/5] gdb: add "unwinder class" to " Guinevere Larsen
[not found] ` <86zft088sm.fsf@gnu.org>
2024-05-08 19:40 ` Guinevere Larsen
2024-05-09 13:55 ` Tom Tromey
2024-05-08 14:54 ` [PATCH v3 3/5] gdb: Migrate frame unwinders to use C++ classes Guinevere Larsen
2024-05-08 14:54 ` [PATCH v3 4/5] gdb: introduce ability to disable frame unwinders Guinevere Larsen
2024-05-08 14:54 ` [PATCH v3 5/5] gdb/testsuite: Test for a backtrace through object without debuginfo Guinevere Larsen
2024-05-27 13:40 ` [PATCH v3 0/5] Modernize frame unwinders and add disable feature Guinevere Larsen
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