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Introduce gdb.FinishBreakpoint in Python

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* Makefile.in (SUBDIR_PYTHON_OBS): Add py-finishbreakpoint.o.
	(SUBDIR_PYTHON_SRCS): Add python/py-finishbreakpoint.c.
	Add build rule for this file.
	* infcmd.c (print_return_value): Split to create get_return_value.
	(get_return_value): New function based on print_return_value. Handle
	case where stop_registers are not set.
	* inferior.h (get_return_value): New prototype.
	* python/py-breakpoint.c (bppy_pending_object): Make non-static.
	(gdbpy_breakpoint_created): Set is_py_finish_bp is necessary.
	(struct breakpoint_object): Move to python-internal.h
	(BPPY_REQUIRE_VALID): Likewise.
	(BPPY_SET_REQUIRE_VALID): Likewise.
	(gdbpy_breakpoint_created): Initialize is_finish_bp.
	(gdbpy_should_stop): Add  pre/post hooks before/after calling stop
	method.
	* python/python-internal.h (breakpoint_object_type): Add as extern.
	(bppy_pending_object): Likewise.
	(typedef struct breakpoint_object) Removed.
	(struct breakpoint_object): Moved from py-breakpoint.c.
	Add field is_finish_bp.
	(BPPY_REQUIRE_VALID): Moved from py-breakpoint.c.
	(BPPY_SET_REQUIRE_VALID): Likewise.
	(frame_object_to_frame_info): New prototype.
	(gdbpy_initialize_finishbreakpoints): New prototype.
	(bpfinishpy_is_finish_bp): Likewise.
	(bpfinishpy_pre_stop_hook): Likewise.
	(bpfinishpy_post_stop_hook): Likewise.
	* python/py-finishbreakpoint.c: New file.
	* python/py-frame.c(frame_object_to_frame_info): Make non-static and
	accept PyObject instead of frame_object.
	(frapy_is_valid): Don't cast to frame_object.
	(frapy_name): Likewise.
	(frapy_type): Likewise.
	(frapy_unwind_stop_reason): Likewise.
	(frapy_pc): Likewise.
	(frapy_block): Likewise.
	(frapy_function): Likewise.
	(frapy_older): Likewise.
	(frapy_newer): Likewise.
	(frapy_find_sal): Likewise.
	(frapy_read_var): Likewise.
	(frapy_select): Likewise.
	* python/python.c (gdbpy_is_stopped_at_finish_bp): New noop function.
	(_initialize_python): Add gdbpy_initialize_finishbreakpoints.
	* python/python.h: Include breakpoint.h
	(gdbpy_is_stopped_at_finish_bp): New prototype.

doc/
	* gdb.texinfo (Finish Breakpoints in Python): New subsection.
	(Python API): Add menu entry for Finish Breakpoints.

testsuite/
	* Makefile.in (EXECUTABLES): Add py-finish-breakpoint and
	py-finish-breakpoint2
	(MISCALLANEOUS): Add py-events-shlib.so and py-events-shlib-nodebug.so
	* gdb.python/py-breakpoint.exp (mult_line): Define and use variable
	instead of line number.
	* gdb.python/py-finish-breakpoint.c: New file.
	* gdb.python/py-finish-breakpoint.exp: New file.
	* gdb.python/py-finish-breakpoint.py: New file.
	* gdb.python/py-finish-breakpoint2.cc: New file.
	* gdb.python/py-finish-breakpoint2.exp: New file.
	* gdb.python/py-finish-breakpoint2.py: New file.
This commit is contained in:
Kevin Pouget 2011-12-23 17:06:16 +00:00
parent 6538471c25
commit cc72b2a2da
23 changed files with 1329 additions and 69 deletions
Download patch file Download diff file Expand all files Collapse all files

39
gdb/infcmd.c
View file

@ -1414,16 +1414,26 @@ advance_command (char *arg, int from_tty)
until_break_command (arg, from_tty, 1);
}
/* Print the result of a function at the end of a 'finish' command. */
/* Return the value of the result of a function at the end of a 'finish'
command/BP. */
static void
print_return_value (struct type *func_type, struct type *value_type)
struct value *
get_return_value (struct type *func_type, struct type *value_type)
{
struct gdbarch *gdbarch = get_regcache_arch (stop_registers);
struct cleanup *old_chain;
struct ui_stream *stb;
struct regcache *stop_regs = stop_registers;
struct gdbarch *gdbarch;
struct value *value;
struct ui_out *uiout = current_uiout;
struct cleanup *cleanup = make_cleanup (null_cleanup, NULL);
/* If stop_registers were not saved, use the current registers. */
if (!stop_regs)
{
stop_regs = regcache_dup (get_current_regcache ());
cleanup = make_cleanup_regcache_xfree (stop_regs);
}
gdbarch = get_regcache_arch (stop_regs);
CHECK_TYPEDEF (value_type);
gdb_assert (TYPE_CODE (value_type) != TYPE_CODE_VOID);
@ -1442,7 +1452,7 @@ print_return_value (struct type *func_type, struct type *value_type)
case RETURN_VALUE_ABI_RETURNS_ADDRESS:
case RETURN_VALUE_ABI_PRESERVES_ADDRESS:
value = allocate_value (value_type);
gdbarch_return_value (gdbarch, func_type, value_type, stop_registers,
gdbarch_return_value (gdbarch, func_type, value_type, stop_regs,
value_contents_raw (value), NULL);
break;
case RETURN_VALUE_STRUCT_CONVENTION:
@ -1452,6 +1462,21 @@ print_return_value (struct type *func_type, struct type *value_type)
internal_error (__FILE__, __LINE__, _("bad switch"));
}
do_cleanups (cleanup);
return value;
}
/* Print the result of a function at the end of a 'finish' command. */
static void
print_return_value (struct type *func_type, struct type *value_type)
{
struct value *value = get_return_value (func_type, value_type);
struct cleanup *old_chain;
struct ui_stream *stb;
struct ui_out *uiout = current_uiout;
if (value)
{
struct value_print_options opts;