/* Python frame unwinder interface.
- Copyright (C) 2015-2017 Free Software Foundation, Inc.
+ Copyright (C) 2015-2018 Free Software Foundation, Inc.
This file is part of GDB.
#include "gdb_obstack.h"
#include "gdbcmd.h"
#include "language.h"
-#include "observer.h"
+#include "observable.h"
#include "python-internal.h"
#include "regcache.h"
#include "valprint.h"
/* The data we keep for a frame we can unwind: frame ID and an array of
(register_number, register_value) pairs. */
-struct reg_info
-{
- /* Register number. */
- int number;
-
- /* Register data bytes pointer. */
- gdb_byte data[MAX_REGISTER_SIZE];
-};
-
typedef struct
{
/* Frame ID. */
/* Length of the `reg' array below. */
int reg_count;
- struct reg_info reg[];
+ cached_reg_t reg[];
} cached_frame_info;
extern PyTypeObject pending_frame_object_type
if (PyObject_HasAttrString (pyo, attr_name))
{
- gdbpy_ref pyo_value (PyObject_GetAttrString (pyo, attr_name));
+ gdbpy_ref<> pyo_value (PyObject_GetAttrString (pyo, attr_name));
if (pyo_value != NULL && pyo_value != Py_None)
{
static PyObject *
unwind_infopy_str (PyObject *self)
{
- struct ui_file *strfile = mem_fileopen ();
unwind_info_object *unwind_info = (unwind_info_object *) self;
- PyObject *result;
+ string_file stb;
- fprintf_unfiltered (strfile, "Frame ID: ");
- fprint_frame_id (strfile, unwind_info->frame_id);
+ stb.puts ("Frame ID: ");
+ fprint_frame_id (&stb, unwind_info->frame_id);
{
- char *sep = "";
+ const char *sep = "";
int i;
struct value_print_options opts;
saved_reg *reg;
get_user_print_options (&opts);
- fprintf_unfiltered (strfile, "\nSaved registers: (");
+ stb.printf ("\nSaved registers: (");
for (i = 0; VEC_iterate (saved_reg, unwind_info->saved_regs, i, reg); i++)
{
struct value *value = value_object_to_value (reg->value);
- fprintf_unfiltered (strfile, "%s(%d, ", sep, reg->number);
+ stb.printf ("%s(%d, ", sep, reg->number);
if (value != NULL)
{
TRY
{
- value_print (value, strfile, &opts);
- fprintf_unfiltered (strfile, ")");
+ value_print (value, &stb, &opts);
+ stb.puts (")");
}
CATCH (except, RETURN_MASK_ALL)
{
END_CATCH
}
else
- fprintf_unfiltered (strfile, "<BAD>)");
+ stb.puts ("<BAD>)");
sep = ", ";
}
- fprintf_unfiltered (strfile, ")");
+ stb.puts (")");
}
- std::string s = ui_file_as_string (strfile);
- result = PyString_FromString (s.c_str ());
- ui_file_delete (strfile);
- return result;
+ return PyString_FromString (stb.c_str ());
}
/* Create UnwindInfo instance for given PendingFrame and frame ID.
int regnum)
{
cached_frame_info *cached_frame = (cached_frame_info *) *cache_ptr;
- struct reg_info *reg_info = cached_frame->reg;
- struct reg_info *reg_info_end = reg_info + cached_frame->reg_count;
+ cached_reg_t *reg_info = cached_frame->reg;
+ cached_reg_t *reg_info_end = reg_info + cached_frame->reg_count;
TRACE_PY_UNWIND (1, "%s (frame=%p,...,reg=%d)\n", __FUNCTION__, this_frame,
regnum);
for (; reg_info < reg_info_end; ++reg_info)
{
- if (regnum == reg_info->number)
+ if (regnum == reg_info->num)
return frame_unwind_got_bytes (this_frame, regnum, reg_info->data);
}
/* Create PendingFrame instance to pass to sniffers. */
pending_frame_object *pfo = PyObject_New (pending_frame_object,
&pending_frame_object_type);
- gdbpy_ref pyo_pending_frame ((PyObject *) pfo);
+ gdbpy_ref<> pyo_pending_frame ((PyObject *) pfo);
if (pyo_pending_frame == NULL)
{
gdbpy_print_stack ();
gdbpy_print_stack ();
return 0;
}
- gdbpy_ref pyo_execute (PyObject_GetAttrString (gdb_python_module,
- "execute_unwinders"));
+ gdbpy_ref<> pyo_execute (PyObject_GetAttrString (gdb_python_module,
+ "execute_unwinders"));
if (pyo_execute == NULL)
{
gdbpy_print_stack ();
return 0;
}
- gdbpy_ref pyo_unwind_info
+ gdbpy_ref<> pyo_unwind_info
(PyObject_CallFunctionObjArgs (pyo_execute.get (),
pyo_pending_frame.get (), NULL));
if (pyo_unwind_info == NULL)
{
+ /* If the unwinder is cancelled due to a Ctrl-C, then propagate
+ the Ctrl-C as a GDB exception instead of swallowing it. */
+ if (PyErr_ExceptionMatches (PyExc_KeyboardInterrupt))
+ {
+ PyErr_Clear ();
+ quit ();
+ }
gdbpy_print_stack ();
return 0;
}
struct value *value = value_object_to_value (reg->value);
size_t data_size = register_size (gdbarch, reg->number);
- cached_frame->reg[i].number = reg->number;
+ cached_frame->reg[i].num = reg->number;
/* `value' validation was done before, just assert. */
gdb_assert (value != NULL);
gdb_assert (data_size == TYPE_LENGTH (value_type (value)));
- gdb_assert (data_size <= MAX_REGISTER_SIZE);
+ cached_frame->reg[i].data = (gdb_byte *) xmalloc (data_size);
memcpy (cached_frame->reg[i].data, value_contents (value), data_size);
}
}
pyuw_dealloc_cache (struct frame_info *this_frame, void *cache)
{
TRACE_PY_UNWIND (3, "%s: enter", __FUNCTION__);
+ cached_frame_info *cached_frame = (cached_frame_info *) cache;
+
+ for (int i = 0; i < cached_frame->reg_count; i++)
+ xfree (cached_frame->reg[i].data);
+
xfree (cache);
}
&setdebuglist, &showdebuglist);
pyuw_gdbarch_data
= gdbarch_data_register_post_init (pyuw_gdbarch_data_init);
- observer_attach_architecture_changed (pyuw_on_new_gdbarch);
+ gdb::observers::architecture_changed.attach (pyuw_on_new_gdbarch);
if (PyType_Ready (&pending_frame_object_type) < 0)
return -1;