/* Python frame filters
- Copyright (C) 2013-2015 Free Software Foundation, Inc.
+ Copyright (C) 2013-2018 Free Software Foundation, Inc.
This file is part of GDB.
#include "demangle.h"
#include "mi/mi-cmds.h"
#include "python-internal.h"
+#include "py-ref.h"
+#include "common/gdb_optional.h"
enum mi_print_types
{
NAME is a pass-through argument where the name of the symbol will
be written. NAME is allocated in this function, but the caller is
responsible for clean up. SYM is a pass-through argument where the
- symbol will be written. In the case of the API returning a string,
- this will be set to NULL. LANGUAGE is also a pass-through argument
- denoting the language attributed to the Symbol. In the case of SYM
- being NULL, this will be set to the current language. Returns
- EXT_LANG_BT_ERROR on error with the appropriate Python exception set, and
- EXT_LANG_BT_OK on success. */
+ symbol will be written and SYM_BLOCK is a pass-through argument to
+ write the block where the symbol lies in. In the case of the API
+ returning a string, this will be set to NULL. LANGUAGE is also a
+ pass-through argument denoting the language attributed to the
+ Symbol. In the case of SYM being NULL, this will be set to the
+ current language. Returns EXT_LANG_BT_ERROR on error with the
+ appropriate Python exception set, and EXT_LANG_BT_OK on success. */
static enum ext_lang_bt_status
-extract_sym (PyObject *obj, char **name, struct symbol **sym,
+extract_sym (PyObject *obj, gdb::unique_xmalloc_ptr<char> *name,
+ struct symbol **sym, struct block **sym_block,
const struct language_defn **language)
{
- PyObject *result = PyObject_CallMethod (obj, "symbol", NULL);
+ gdbpy_ref<> result (PyObject_CallMethod (obj, "symbol", NULL));
if (result == NULL)
return EXT_LANG_BT_ERROR;
/* For 'symbol' callback, the function can return a symbol or a
string. */
- if (gdbpy_is_string (result))
+ if (gdbpy_is_string (result.get ()))
{
- *name = python_string_to_host_string (result);
- Py_DECREF (result);
+ *name = python_string_to_host_string (result.get ());
if (*name == NULL)
return EXT_LANG_BT_ERROR;
python_language. */
*language = python_language;
*sym = NULL;
+ *sym_block = NULL;
}
else
{
/* This type checks 'result' during the conversion so we
just call it unconditionally and check the return. */
- *sym = symbol_object_to_symbol (result);
-
- Py_DECREF (result);
+ *sym = symbol_object_to_symbol (result.get ());
+ /* TODO: currently, we have no way to recover the block in which SYMBOL
+ was found, so we have no block to return. Trying to evaluate SYMBOL
+ will yield an incorrect value when it's located in a FRAME and
+ evaluated from another frame (as permitted in nested functions). */
+ *sym_block = NULL;
if (*sym == NULL)
{
/* Duplicate the symbol name, so the caller has consistency
in garbage collection. */
- *name = xstrdup (SYMBOL_PRINT_NAME (*sym));
+ name->reset (xstrdup (SYMBOL_PRINT_NAME (*sym)));
/* If a symbol is specified attempt to determine the language
from the symbol. If mode is not "auto", then the language
{
if (PyObject_HasAttrString (obj, "value"))
{
- PyObject *vresult = PyObject_CallMethod (obj, "value", NULL);
+ gdbpy_ref<> vresult (PyObject_CallMethod (obj, "value", NULL));
if (vresult == NULL)
return EXT_LANG_BT_ERROR;
value. */
if (vresult == Py_None)
{
- Py_DECREF (vresult);
*value = NULL;
return EXT_LANG_BT_OK;
}
else
{
- *value = convert_value_from_python (vresult);
- Py_DECREF (vresult);
+ *value = convert_value_from_python (vresult.get ());
if (*value == NULL)
return EXT_LANG_BT_ERROR;
TRY
{
- struct type *type;
- struct ui_file *stb;
- struct cleanup *cleanup;
-
- stb = mem_fileopen ();
- cleanup = make_cleanup_ui_file_delete (stb);
- type = check_typedef (value_type (val));
- type_print (value_type (val), "", stb, -1);
- ui_out_field_stream (out, "type", stb);
- do_cleanups (cleanup);
+ check_typedef (value_type (val));
+
+ string_file stb;
+ type_print (value_type (val), "", &stb, -1);
+ out->field_stream ("type", stb);
}
CATCH (except, RETURN_MASK_ALL)
{
const struct language_defn *language)
{
int should_print = 0;
- int local_indent = (4 * indent);
-
- /* Never set an indent level for common_val_print if MI. */
- if (ui_out_is_mi_like_p (out))
- local_indent = 0;
/* MI does not print certain values, differentiated by type,
depending on what ARGS_TYPE indicates. Test type against option.
{
TRY
{
- struct ui_file *stb;
- struct cleanup *cleanup;
-
- stb = mem_fileopen ();
- cleanup = make_cleanup_ui_file_delete (stb);
- common_val_print (val, stb, indent, opts, language);
- ui_out_field_stream (out, "value", stb);
- do_cleanups (cleanup);
+ string_file stb;
+
+ common_val_print (val, &stb, indent, opts, language);
+ out->field_stream ("value", stb);
}
CATCH (except, RETURN_MASK_ALL)
{
This function can return an iterator, or NULL. */
static PyObject *
-get_py_iter_from_func (PyObject *filter, char *func)
+get_py_iter_from_func (PyObject *filter, const char *func)
{
if (PyObject_HasAttrString (filter, func))
{
- PyObject *result = PyObject_CallMethod (filter, func, NULL);
+ gdbpy_ref<> result (PyObject_CallMethod (filter, func, NULL));
if (result != NULL)
{
if (result == Py_None)
{
- return result;
+ return result.release ();
}
else
{
- PyObject *iterator = PyObject_GetIter (result);
-
- Py_DECREF (result);
- return iterator;
+ return PyObject_GetIter (result.get ());
}
}
}
TRY
{
- struct cleanup *cleanups = make_cleanup (null_cleanup, NULL);
+ gdb::optional<ui_out_emit_tuple> maybe_tuple;
/* MI has varying rules for tuples, but generally if there is only
one element in each item in the list, do not start a tuple. The
if the value is a frame argument. This is denoted in this
function with PRINT_ARGS_FIELD which is flag from the caller to
emit the ARGS field. */
- if (ui_out_is_mi_like_p (out))
+ if (out->is_mi_like_p ())
{
if (print_args_field || args_type != NO_VALUES)
- make_cleanup_ui_out_tuple_begin_end (out, NULL);
+ maybe_tuple.emplace (out, nullptr);
}
annotate_arg_begin ();
entry value options. */
if (fa != NULL)
{
- struct ui_file *stb;
+ string_file stb;
- stb = mem_fileopen ();
- make_cleanup_ui_file_delete (stb);
- fprintf_symbol_filtered (stb, SYMBOL_PRINT_NAME (fa->sym),
+ fprintf_symbol_filtered (&stb, SYMBOL_PRINT_NAME (fa->sym),
SYMBOL_LANGUAGE (fa->sym),
DMGL_PARAMS | DMGL_ANSI);
if (fa->entry_kind == print_entry_values_compact)
{
- fputs_filtered ("=", stb);
+ stb.puts ("=");
- fprintf_symbol_filtered (stb, SYMBOL_PRINT_NAME (fa->sym),
+ fprintf_symbol_filtered (&stb, SYMBOL_PRINT_NAME (fa->sym),
SYMBOL_LANGUAGE (fa->sym),
DMGL_PARAMS | DMGL_ANSI);
}
if (fa->entry_kind == print_entry_values_only
|| fa->entry_kind == print_entry_values_compact)
- {
- fputs_filtered ("@entry", stb);
- }
- ui_out_field_stream (out, "name", stb);
+ stb.puts ("@entry");
+ out->field_stream ("name", stb);
}
else
/* Otherwise, just output the name. */
- ui_out_field_string (out, "name", sym_name);
+ out->field_string ("name", sym_name);
annotate_arg_name_end ();
- if (! ui_out_is_mi_like_p (out))
- ui_out_text (out, "=");
+ if (! out->is_mi_like_p ())
+ out->text ("=");
if (print_args_field)
- ui_out_field_int (out, "arg", 1);
+ out->field_int ("arg", 1);
/* For MI print the type, but only for simple values. This seems
weird, but this is how MI choose to format the various output
if (args_type == MI_PRINT_SIMPLE_VALUES && val != NULL)
{
if (py_print_type (out, val) == EXT_LANG_BT_ERROR)
- {
- retval = EXT_LANG_BT_ERROR;
- do_cleanups (cleanups);
- continue;
- }
+ retval = EXT_LANG_BT_ERROR;
}
- if (val != NULL)
- annotate_arg_value (value_type (val));
-
- /* If the output is to the CLI, and the user option "set print
- frame-arguments" is set to none, just output "...". */
- if (! ui_out_is_mi_like_p (out) && args_type == NO_VALUES)
- ui_out_field_string (out, "value", "...");
- else
+ if (retval != EXT_LANG_BT_ERROR)
{
- /* Otherwise, print the value for both MI and the CLI, except
- for the case of MI_PRINT_NO_VALUES. */
- if (args_type != NO_VALUES)
+ if (val != NULL)
+ annotate_arg_value (value_type (val));
+
+ /* If the output is to the CLI, and the user option "set print
+ frame-arguments" is set to none, just output "...". */
+ if (! out->is_mi_like_p () && args_type == NO_VALUES)
+ out->field_string ("value", "...");
+ else
{
- if (val == NULL)
+ /* Otherwise, print the value for both MI and the CLI, except
+ for the case of MI_PRINT_NO_VALUES. */
+ if (args_type != NO_VALUES)
{
- gdb_assert (fa != NULL && fa->error != NULL);
- ui_out_field_fmt (out, "value",
- _("<error reading variable: %s>"),
- fa->error);
+ if (val == NULL)
+ {
+ gdb_assert (fa != NULL && fa->error != NULL);
+ out->field_fmt ("value",
+ _("<error reading variable: %s>"),
+ fa->error);
+ }
+ else if (py_print_value (out, val, opts, 0, args_type, language)
+ == EXT_LANG_BT_ERROR)
+ retval = EXT_LANG_BT_ERROR;
}
- else if (py_print_value (out, val, opts, 0, args_type, language)
- == EXT_LANG_BT_ERROR)
- retval = EXT_LANG_BT_ERROR;
}
}
-
- do_cleanups (cleanups);
}
CATCH (except, RETURN_MASK_ERROR)
{
int print_args_field,
struct frame_info *frame)
{
- PyObject *item;
struct value_print_options opts;
get_user_print_options (&opts);
CATCH (except, RETURN_MASK_ALL)
{
gdbpy_convert_exception (except);
- goto error;
+ return EXT_LANG_BT_ERROR;
}
END_CATCH
commas in the argument output is correct. At the end of the
loop block collect another item from the iterator, and, if it is
not null emit a comma. */
- item = PyIter_Next (iter);
+ gdbpy_ref<> item (PyIter_Next (iter));
if (item == NULL && PyErr_Occurred ())
- goto error;
+ return EXT_LANG_BT_ERROR;
- while (item)
+ while (item != NULL)
{
const struct language_defn *language;
- char *sym_name;
+ gdb::unique_xmalloc_ptr<char> sym_name;
struct symbol *sym;
+ struct block *sym_block;
struct value *val;
enum ext_lang_bt_status success = EXT_LANG_BT_ERROR;
- success = extract_sym (item, &sym_name, &sym, &language);
+ success = extract_sym (item.get (), &sym_name, &sym, &sym_block,
+ &language);
if (success == EXT_LANG_BT_ERROR)
- {
- Py_DECREF (item);
- goto error;
- }
+ return EXT_LANG_BT_ERROR;
- success = extract_value (item, &val);
+ success = extract_value (item.get (), &val);
if (success == EXT_LANG_BT_ERROR)
- {
- xfree (sym_name);
- Py_DECREF (item);
- goto error;
- }
-
- Py_DECREF (item);
- item = NULL;
+ return EXT_LANG_BT_ERROR;
- if (sym && ui_out_is_mi_like_p (out)
+ if (sym && out->is_mi_like_p ()
&& ! mi_should_print (sym, MI_PRINT_ARGS))
- {
- xfree (sym_name);
- continue;
- }
+ continue;
/* If the object did not provide a value, read it using
read_frame_args and account for entry values, if any. */
{
PyErr_SetString (PyExc_RuntimeError,
_("No symbol or value provided."));
- xfree (sym_name);
- goto error;
+ return EXT_LANG_BT_ERROR;
}
TRY
}
CATCH (except, RETURN_MASK_ALL)
{
- xfree (sym_name);
gdbpy_convert_exception (except);
- goto error;
+ return EXT_LANG_BT_ERROR;
}
END_CATCH
{
xfree (arg.error);
xfree (entryarg.error);
- xfree (sym_name);
- goto error;
+ return EXT_LANG_BT_ERROR;
}
}
{
TRY
{
- ui_out_text (out, ", ");
- ui_out_wrap_hint (out, " ");
+ out->text (", ");
+ out->wrap_hint (" ");
}
CATCH (except, RETURN_MASK_ALL)
{
xfree (arg.error);
xfree (entryarg.error);
- xfree (sym_name);
gdbpy_convert_exception (except);
- goto error;
+ return EXT_LANG_BT_ERROR;
}
END_CATCH
}
args_type, print_args_field, NULL)
== EXT_LANG_BT_ERROR)
{
- xfree (arg.error);
- xfree (entryarg.error);
- xfree (sym_name);
- goto error;
+ xfree (arg.error);
+ xfree (entryarg.error);
+ return EXT_LANG_BT_ERROR;
}
}
/* If the object has provided a value, we just print that. */
if (val != NULL)
{
- if (py_print_single_arg (out, sym_name, NULL, val, &opts,
+ if (py_print_single_arg (out, sym_name.get (), NULL, val, &opts,
args_type, print_args_field,
language) == EXT_LANG_BT_ERROR)
- {
- xfree (sym_name);
- goto error;
- }
+ return EXT_LANG_BT_ERROR;
}
}
- xfree (sym_name);
-
/* Collect the next item from the iterator. If
this is the last item, do not print the
comma. */
- item = PyIter_Next (iter);
+ item.reset (PyIter_Next (iter));
if (item != NULL)
{
TRY
{
- ui_out_text (out, ", ");
+ out->text (", ");
}
CATCH (except, RETURN_MASK_ALL)
{
- Py_DECREF (item);
gdbpy_convert_exception (except);
- goto error;
+ return EXT_LANG_BT_ERROR;
}
END_CATCH
}
else if (PyErr_Occurred ())
- goto error;
+ return EXT_LANG_BT_ERROR;
TRY
{
}
CATCH (except, RETURN_MASK_ALL)
{
- Py_DECREF (item);
gdbpy_convert_exception (except);
- goto error;
+ return EXT_LANG_BT_ERROR;
}
END_CATCH
}
return EXT_LANG_BT_OK;
-
- error:
- return EXT_LANG_BT_ERROR;
}
int print_args_field,
struct frame_info *frame)
{
- PyObject *item;
struct value_print_options opts;
get_user_print_options (&opts);
opts.deref_ref = 1;
- while ((item = PyIter_Next (iter)))
+ while (true)
{
const struct language_defn *language;
- char *sym_name;
+ gdb::unique_xmalloc_ptr<char> sym_name;
struct value *val;
enum ext_lang_bt_status success = EXT_LANG_BT_ERROR;
struct symbol *sym;
+ struct block *sym_block;
int local_indent = 8 + (8 * indent);
- struct cleanup *locals_cleanups;
+ gdb::optional<ui_out_emit_tuple> tuple;
- locals_cleanups = make_cleanup_py_decref (item);
+ gdbpy_ref<> item (PyIter_Next (iter));
+ if (item == NULL)
+ break;
- success = extract_sym (item, &sym_name, &sym, &language);
+ success = extract_sym (item.get (), &sym_name, &sym, &sym_block,
+ &language);
if (success == EXT_LANG_BT_ERROR)
- {
- do_cleanups (locals_cleanups);
- goto error;
- }
-
- make_cleanup (xfree, sym_name);
+ return EXT_LANG_BT_ERROR;
- success = extract_value (item, &val);
+ success = extract_value (item.get (), &val);
if (success == EXT_LANG_BT_ERROR)
- {
- do_cleanups (locals_cleanups);
- goto error;
- }
+ return EXT_LANG_BT_ERROR;
- if (sym != NULL && ui_out_is_mi_like_p (out)
+ if (sym != NULL && out->is_mi_like_p ()
&& ! mi_should_print (sym, MI_PRINT_LOCALS))
- {
- do_cleanups (locals_cleanups);
- continue;
- }
+ continue;
/* If the object did not provide a value, read it. */
if (val == NULL)
{
TRY
{
- val = read_var_value (sym, frame);
+ val = read_var_value (sym, sym_block, frame);
}
CATCH (except, RETURN_MASK_ERROR)
{
gdbpy_convert_exception (except);
- do_cleanups (locals_cleanups);
- goto error;
+ return EXT_LANG_BT_ERROR;
}
END_CATCH
}
/* With PRINT_NO_VALUES, MI does not emit a tuple normally as
each output contains only one field. The exception is
-stack-list-variables, which always provides a tuple. */
- if (ui_out_is_mi_like_p (out))
+ if (out->is_mi_like_p ())
{
if (print_args_field || args_type != NO_VALUES)
- make_cleanup_ui_out_tuple_begin_end (out, NULL);
+ tuple.emplace (out, nullptr);
}
TRY
{
- if (! ui_out_is_mi_like_p (out))
+ if (! out->is_mi_like_p ())
{
/* If the output is not MI we indent locals. */
- ui_out_spaces (out, local_indent);
+ out->spaces (local_indent);
}
- ui_out_field_string (out, "name", sym_name);
+ out->field_string ("name", sym_name.get ());
- if (! ui_out_is_mi_like_p (out))
- ui_out_text (out, " = ");
+ if (! out->is_mi_like_p ())
+ out->text (" = ");
}
CATCH (except, RETURN_MASK_ERROR)
{
gdbpy_convert_exception (except);
- do_cleanups (locals_cleanups);
- goto error;
+ return EXT_LANG_BT_ERROR;
}
END_CATCH
if (args_type == MI_PRINT_SIMPLE_VALUES)
{
if (py_print_type (out, val) == EXT_LANG_BT_ERROR)
- {
- do_cleanups (locals_cleanups);
- goto error;
- }
+ return EXT_LANG_BT_ERROR;
}
/* CLI always prints values for locals. MI uses the
simple/no/all system. */
- if (! ui_out_is_mi_like_p (out))
+ if (! out->is_mi_like_p ())
{
int val_indent = (indent + 1) * 4;
if (py_print_value (out, val, &opts, val_indent, args_type,
language) == EXT_LANG_BT_ERROR)
- {
- do_cleanups (locals_cleanups);
- goto error;
- }
+ return EXT_LANG_BT_ERROR;
}
else
{
{
if (py_print_value (out, val, &opts, 0, args_type,
language) == EXT_LANG_BT_ERROR)
- {
- do_cleanups (locals_cleanups);
- goto error;
- }
+ return EXT_LANG_BT_ERROR;
}
}
- do_cleanups (locals_cleanups);
-
TRY
{
- ui_out_text (out, "\n");
+ out->text ("\n");
}
CATCH (except, RETURN_MASK_ERROR)
{
gdbpy_convert_exception (except);
- goto error;
+ return EXT_LANG_BT_ERROR;
}
END_CATCH
}
- if (item == NULL && PyErr_Occurred ())
- goto error;
-
- return EXT_LANG_BT_OK;
+ if (!PyErr_Occurred ())
+ return EXT_LANG_BT_OK;
- error:
return EXT_LANG_BT_ERROR;
}
enum ext_lang_frame_args args_type,
struct frame_info *frame)
{
- struct cleanup *old_chain;
- PyObject *args_iter;
- PyObject *locals_iter;
-
- args_iter = get_py_iter_from_func (filter, "frame_args");
- old_chain = make_cleanup_py_xdecref (args_iter);
+ gdbpy_ref<> args_iter (get_py_iter_from_func (filter, "frame_args"));
if (args_iter == NULL)
- goto error;
+ return EXT_LANG_BT_ERROR;
- locals_iter = get_py_iter_from_func (filter, "frame_locals");
+ gdbpy_ref<> locals_iter (get_py_iter_from_func (filter, "frame_locals"));
if (locals_iter == NULL)
- goto error;
+ return EXT_LANG_BT_ERROR;
- make_cleanup_py_decref (locals_iter);
- make_cleanup_ui_out_list_begin_end (out, "variables");
+ ui_out_emit_list list_emitter (out, "variables");
- if (args_iter != Py_None)
- if (enumerate_args (args_iter, out, args_type, 1, frame)
- == EXT_LANG_BT_ERROR)
- goto error;
+ if (args_iter != Py_None
+ && (enumerate_args (args_iter.get (), out, args_type, 1, frame)
+ == EXT_LANG_BT_ERROR))
+ return EXT_LANG_BT_ERROR;
- if (locals_iter != Py_None)
- if (enumerate_locals (locals_iter, out, 1, args_type, 1, frame)
- == EXT_LANG_BT_ERROR)
- goto error;
+ if (locals_iter != Py_None
+ && (enumerate_locals (locals_iter.get (), out, 1, args_type, 1, frame)
+ == EXT_LANG_BT_ERROR))
+ return EXT_LANG_BT_ERROR;
- do_cleanups (old_chain);
return EXT_LANG_BT_OK;
-
- error:
- do_cleanups (old_chain);
- return EXT_LANG_BT_ERROR;
}
/* Helper function for printing locals. This function largely just
int indent,
struct frame_info *frame)
{
- PyObject *locals_iter = get_py_iter_from_func (filter,
- "frame_locals");
- struct cleanup *old_chain = make_cleanup_py_xdecref (locals_iter);
-
+ gdbpy_ref<> locals_iter (get_py_iter_from_func (filter, "frame_locals"));
if (locals_iter == NULL)
- goto locals_error;
+ return EXT_LANG_BT_ERROR;
- make_cleanup_ui_out_list_begin_end (out, "locals");
+ ui_out_emit_list list_emitter (out, "locals");
- if (locals_iter != Py_None)
- if (enumerate_locals (locals_iter, out, indent, args_type,
- 0, frame) == EXT_LANG_BT_ERROR)
- goto locals_error;
+ if (locals_iter != Py_None
+ && (enumerate_locals (locals_iter.get (), out, indent, args_type,
+ 0, frame) == EXT_LANG_BT_ERROR))
+ return EXT_LANG_BT_ERROR;
- do_cleanups (old_chain);
return EXT_LANG_BT_OK;
-
- locals_error:
- do_cleanups (old_chain);
- return EXT_LANG_BT_ERROR;
}
/* Helper function for printing frame arguments. This function
enum ext_lang_frame_args args_type,
struct frame_info *frame)
{
- PyObject *args_iter = get_py_iter_from_func (filter, "frame_args");
- struct cleanup *old_chain = make_cleanup_py_xdecref (args_iter);
-
+ gdbpy_ref<> args_iter (get_py_iter_from_func (filter, "frame_args"));
if (args_iter == NULL)
- goto args_error;
+ return EXT_LANG_BT_ERROR;
- make_cleanup_ui_out_list_begin_end (out, "args");
+ ui_out_emit_list list_emitter (out, "args");
TRY
{
annotate_frame_args ();
- if (! ui_out_is_mi_like_p (out))
- ui_out_text (out, " (");
+ if (! out->is_mi_like_p ())
+ out->text (" (");
}
CATCH (except, RETURN_MASK_ALL)
{
gdbpy_convert_exception (except);
- goto args_error;
+ return EXT_LANG_BT_ERROR;
}
END_CATCH
- if (args_iter != Py_None)
- if (enumerate_args (args_iter, out, args_type, 0, frame)
- == EXT_LANG_BT_ERROR)
- goto args_error;
+ if (args_iter != Py_None
+ && (enumerate_args (args_iter.get (), out, args_type, 0, frame)
+ == EXT_LANG_BT_ERROR))
+ return EXT_LANG_BT_ERROR;
TRY
{
- if (! ui_out_is_mi_like_p (out))
- ui_out_text (out, ")");
+ if (! out->is_mi_like_p ())
+ out->text (")");
}
CATCH (except, RETURN_MASK_ALL)
{
gdbpy_convert_exception (except);
- goto args_error;
+ return EXT_LANG_BT_ERROR;
}
END_CATCH
- do_cleanups (old_chain);
return EXT_LANG_BT_OK;
-
- args_error:
- do_cleanups (old_chain);
- return EXT_LANG_BT_ERROR;
}
/* Print a single frame to the designated output stream, detecting
CORE_ADDR address = 0;
struct gdbarch *gdbarch = NULL;
struct frame_info *frame = NULL;
- struct cleanup *cleanup_stack;
struct value_print_options opts;
- PyObject *py_inf_frame;
int print_level, print_frame_info, print_args, print_locals;
+ gdb::unique_xmalloc_ptr<char> function_to_free;
/* Extract print settings from FLAGS. */
print_level = (flags & PRINT_LEVEL) ? 1 : 0;
/* Get the underlying frame. This is needed to determine GDB
architecture, and also, in the cases of frame variables/arguments to
read them if they returned filter object requires us to do so. */
- py_inf_frame = PyObject_CallMethod (filter, "inferior_frame", NULL);
+ gdbpy_ref<> py_inf_frame (PyObject_CallMethod (filter, "inferior_frame",
+ NULL));
if (py_inf_frame == NULL)
return EXT_LANG_BT_ERROR;
- frame = frame_object_to_frame_info (py_inf_frame);;
-
- Py_DECREF (py_inf_frame);
-
+ frame = frame_object_to_frame_info (py_inf_frame.get ());
if (frame == NULL)
return EXT_LANG_BT_ERROR;
return EXT_LANG_BT_COMPLETED;
}
- cleanup_stack = make_cleanup (null_cleanup, NULL);
+ gdb::optional<ui_out_emit_tuple> tuple;
/* -stack-list-locals does not require a
wrapping frame attribute. */
if (print_frame_info || (print_args && ! print_locals))
- make_cleanup_ui_out_tuple_begin_end (out, "frame");
+ tuple.emplace (out, "frame");
if (print_frame_info)
{
{
TRY
{
- ui_out_spaces (out, indent*4);
+ out->spaces (indent * 4);
}
CATCH (except, RETURN_MASK_ERROR)
{
gdbpy_convert_exception (except);
- do_cleanups (cleanup_stack);
return EXT_LANG_BT_ERROR;
}
END_CATCH
address printing. */
if (PyObject_HasAttrString (filter, "address"))
{
- PyObject *paddr = PyObject_CallMethod (filter, "address", NULL);
+ gdbpy_ref<> paddr (PyObject_CallMethod (filter, "address", NULL));
if (paddr == NULL)
- {
- do_cleanups (cleanup_stack);
- return EXT_LANG_BT_ERROR;
- }
+ return EXT_LANG_BT_ERROR;
if (paddr != Py_None)
{
- address = PyLong_AsLong (paddr);
+ if (get_addr_from_python (paddr.get (), &address) < 0)
+ return EXT_LANG_BT_ERROR;
+
has_addr = 1;
}
- Py_DECREF (paddr);
}
}
architecture from the eliding frame. If that is the case, do
not print 'level', but print spaces. */
if (*slot == frame)
- ui_out_field_skip (out, "level");
+ out->field_skip ("level");
else
{
*slot = frame;
annotate_frame_begin (print_level ? level : 0,
gdbarch, address);
- ui_out_text (out, "#");
- ui_out_field_fmt_int (out, 2, ui_left, "level",
+ out->text ("#");
+ out->field_fmt_int (2, ui_left, "level",
level);
}
}
CATCH (except, RETURN_MASK_ERROR)
{
gdbpy_convert_exception (except);
- do_cleanups (cleanup_stack);
return EXT_LANG_BT_ERROR;
}
END_CATCH
TRY
{
annotate_frame_address ();
- ui_out_field_core_addr (out, "addr", gdbarch, address);
+ out->field_core_addr ("addr", gdbarch, address);
annotate_frame_address_end ();
- ui_out_text (out, " in ");
+ out->text (" in ");
}
CATCH (except, RETURN_MASK_ERROR)
{
gdbpy_convert_exception (except);
- do_cleanups (cleanup_stack);
return EXT_LANG_BT_ERROR;
}
END_CATCH
/* Print frame function name. */
if (PyObject_HasAttrString (filter, "function"))
{
- PyObject *py_func = PyObject_CallMethod (filter, "function", NULL);
- struct cleanup *py_func_cleanup;
+ gdbpy_ref<> py_func (PyObject_CallMethod (filter, "function", NULL));
const char *function = NULL;
if (py_func == NULL)
- {
- do_cleanups (cleanup_stack);
- return EXT_LANG_BT_ERROR;
- }
- py_func_cleanup = make_cleanup_py_decref (py_func);
+ return EXT_LANG_BT_ERROR;
- if (gdbpy_is_string (py_func))
+ if (gdbpy_is_string (py_func.get ()))
{
- char *function_to_free;
+ function_to_free = python_string_to_host_string (py_func.get ());
- function = function_to_free =
- python_string_to_host_string (py_func);
+ if (function_to_free == NULL)
+ return EXT_LANG_BT_ERROR;
- if (function == NULL)
- {
- do_cleanups (cleanup_stack);
- return EXT_LANG_BT_ERROR;
- }
- make_cleanup (xfree, function_to_free);
+ function = function_to_free.get ();
}
- else if (PyLong_Check (py_func))
+ else if (PyLong_Check (py_func.get ()))
{
- CORE_ADDR addr = PyLong_AsUnsignedLongLong (py_func);
+ CORE_ADDR addr;
struct bound_minimal_symbol msymbol;
- if (PyErr_Occurred ())
- {
- do_cleanups (cleanup_stack);
- return EXT_LANG_BT_ERROR;
- }
+ if (get_addr_from_python (py_func.get (), &addr) < 0)
+ return EXT_LANG_BT_ERROR;
msymbol = lookup_minimal_symbol_by_pc (addr);
if (msymbol.minsym != NULL)
PyErr_SetString (PyExc_RuntimeError,
_("FrameDecorator.function: expecting a " \
"String, integer or None."));
- do_cleanups (cleanup_stack);
return EXT_LANG_BT_ERROR;
}
{
annotate_frame_function_name ();
if (function == NULL)
- ui_out_field_skip (out, "func");
+ out->field_skip ("func");
else
- ui_out_field_string (out, "func", function);
+ out->field_string ("func", function);
}
CATCH (except, RETURN_MASK_ERROR)
{
gdbpy_convert_exception (except);
- do_cleanups (cleanup_stack);
return EXT_LANG_BT_ERROR;
}
END_CATCH
-
- do_cleanups (py_func_cleanup);
}
}
if (print_args)
{
if (py_print_args (filter, out, args_type, frame) == EXT_LANG_BT_ERROR)
- {
- do_cleanups (cleanup_stack);
- return EXT_LANG_BT_ERROR;
- }
+ return EXT_LANG_BT_ERROR;
}
/* File name/source/line number information. */
CATCH (except, RETURN_MASK_ERROR)
{
gdbpy_convert_exception (except);
- do_cleanups (cleanup_stack);
return EXT_LANG_BT_ERROR;
}
END_CATCH
if (PyObject_HasAttrString (filter, "filename"))
{
- PyObject *py_fn = PyObject_CallMethod (filter, "filename", NULL);
- struct cleanup *py_fn_cleanup;
+ gdbpy_ref<> py_fn (PyObject_CallMethod (filter, "filename", NULL));
if (py_fn == NULL)
- {
- do_cleanups (cleanup_stack);
- return EXT_LANG_BT_ERROR;
- }
- py_fn_cleanup = make_cleanup_py_decref (py_fn);
+ return EXT_LANG_BT_ERROR;
if (py_fn != Py_None)
{
- char *filename = python_string_to_host_string (py_fn);
+ gdb::unique_xmalloc_ptr<char>
+ filename (python_string_to_host_string (py_fn.get ()));
if (filename == NULL)
- {
- do_cleanups (cleanup_stack);
- return EXT_LANG_BT_ERROR;
- }
+ return EXT_LANG_BT_ERROR;
- make_cleanup (xfree, filename);
TRY
{
- ui_out_wrap_hint (out, " ");
- ui_out_text (out, " at ");
+ out->wrap_hint (" ");
+ out->text (" at ");
annotate_frame_source_file ();
- ui_out_field_string (out, "file", filename);
+ out->field_string ("file", filename.get ());
annotate_frame_source_file_end ();
}
CATCH (except, RETURN_MASK_ERROR)
{
gdbpy_convert_exception (except);
- do_cleanups (cleanup_stack);
return EXT_LANG_BT_ERROR;
}
END_CATCH
}
- do_cleanups (py_fn_cleanup);
}
if (PyObject_HasAttrString (filter, "line"))
{
- PyObject *py_line = PyObject_CallMethod (filter, "line", NULL);
- struct cleanup *py_line_cleanup;
+ gdbpy_ref<> py_line (PyObject_CallMethod (filter, "line", NULL));
int line;
if (py_line == NULL)
- {
- do_cleanups (cleanup_stack);
- return EXT_LANG_BT_ERROR;
- }
- py_line_cleanup = make_cleanup_py_decref (py_line);
+ return EXT_LANG_BT_ERROR;
if (py_line != Py_None)
{
- line = PyLong_AsLong (py_line);
+ line = PyLong_AsLong (py_line.get ());
+ if (PyErr_Occurred ())
+ return EXT_LANG_BT_ERROR;
+
TRY
{
- ui_out_text (out, ":");
+ out->text (":");
annotate_frame_source_line ();
- ui_out_field_int (out, "line", line);
+ out->field_int ("line", line);
}
CATCH (except, RETURN_MASK_ERROR)
{
gdbpy_convert_exception (except);
- do_cleanups (cleanup_stack);
return EXT_LANG_BT_ERROR;
}
END_CATCH
}
- do_cleanups (py_line_cleanup);
}
}
/* For MI we need to deal with the "children" list population of
elided frames, so if MI output detected do not send newline. */
- if (! ui_out_is_mi_like_p (out))
+ if (! out->is_mi_like_p ())
{
TRY
{
annotate_frame_end ();
- ui_out_text (out, "\n");
+ out->text ("\n");
}
CATCH (except, RETURN_MASK_ERROR)
{
gdbpy_convert_exception (except);
- do_cleanups (cleanup_stack);
return EXT_LANG_BT_ERROR;
}
END_CATCH
{
if (py_print_locals (filter, out, args_type, indent,
frame) == EXT_LANG_BT_ERROR)
- {
- do_cleanups (cleanup_stack);
- return EXT_LANG_BT_ERROR;
- }
+ return EXT_LANG_BT_ERROR;
}
{
- PyObject *elided;
- struct cleanup *elided_cleanup;
-
/* Finally recursively print elided frames, if any. */
- elided = get_py_iter_from_func (filter, "elided");
+ gdbpy_ref<> elided (get_py_iter_from_func (filter, "elided"));
if (elided == NULL)
- {
- do_cleanups (cleanup_stack);
- return EXT_LANG_BT_ERROR;
- }
- elided_cleanup = make_cleanup_py_decref (elided);
+ return EXT_LANG_BT_ERROR;
if (elided != Py_None)
{
PyObject *item;
- make_cleanup_ui_out_list_begin_end (out, "children");
+ ui_out_emit_list inner_list_emiter (out, "children");
- if (! ui_out_is_mi_like_p (out))
+ if (! out->is_mi_like_p ())
indent++;
- while ((item = PyIter_Next (elided)))
+ while ((item = PyIter_Next (elided.get ())))
{
- struct cleanup *item_cleanup = make_cleanup_py_decref (item);
+ gdbpy_ref<> item_ref (item);
enum ext_lang_bt_status success = py_print_frame (item, flags,
args_type, out,
indent,
levels_printed);
- do_cleanups (item_cleanup);
-
if (success == EXT_LANG_BT_ERROR)
- {
- do_cleanups (cleanup_stack);
- return EXT_LANG_BT_ERROR;
- }
+ return EXT_LANG_BT_ERROR;
}
if (item == NULL && PyErr_Occurred ())
- {
- do_cleanups (cleanup_stack);
- return EXT_LANG_BT_ERROR;
- }
+ return EXT_LANG_BT_ERROR;
}
- do_cleanups (elided_cleanup);
}
- do_cleanups (cleanup_stack);
return EXT_LANG_BT_COMPLETED;
}
bootstrap_python_frame_filters (struct frame_info *frame,
int frame_low, int frame_high)
{
- struct cleanup *cleanups =
- make_cleanup (null_cleanup, NULL);
- PyObject *module, *sort_func, *iterable, *frame_obj, *iterator;
- PyObject *py_frame_low, *py_frame_high;
-
- frame_obj = frame_info_to_frame_object (frame);
+ gdbpy_ref<> frame_obj (frame_info_to_frame_object (frame));
if (frame_obj == NULL)
- goto error;
- make_cleanup_py_decref (frame_obj);
+ return NULL;
- module = PyImport_ImportModule ("gdb.frames");
+ gdbpy_ref<> module (PyImport_ImportModule ("gdb.frames"));
if (module == NULL)
- goto error;
- make_cleanup_py_decref (module);
+ return NULL;
- sort_func = PyObject_GetAttrString (module, "execute_frame_filters");
+ gdbpy_ref<> sort_func (PyObject_GetAttrString (module.get (),
+ "execute_frame_filters"));
if (sort_func == NULL)
- goto error;
- make_cleanup_py_decref (sort_func);
+ return NULL;
- py_frame_low = PyInt_FromLong (frame_low);
+ gdbpy_ref<> py_frame_low (PyInt_FromLong (frame_low));
if (py_frame_low == NULL)
- goto error;
- make_cleanup_py_decref (py_frame_low);
+ return NULL;
- py_frame_high = PyInt_FromLong (frame_high);
+ gdbpy_ref<> py_frame_high (PyInt_FromLong (frame_high));
if (py_frame_high == NULL)
- goto error;
- make_cleanup_py_decref (py_frame_high);
+ return NULL;
- iterable = PyObject_CallFunctionObjArgs (sort_func, frame_obj,
- py_frame_low,
- py_frame_high,
- NULL);
+ gdbpy_ref<> iterable (PyObject_CallFunctionObjArgs (sort_func.get (),
+ frame_obj.get (),
+ py_frame_low.get (),
+ py_frame_high.get (),
+ NULL));
if (iterable == NULL)
- goto error;
-
- do_cleanups (cleanups);
+ return NULL;
if (iterable != Py_None)
- {
- iterator = PyObject_GetIter (iterable);
- Py_DECREF (iterable);
- }
+ return PyObject_GetIter (iterable.get ());
else
- {
- return iterable;
- }
-
- return iterator;
-
- error:
- do_cleanups (cleanups);
- return NULL;
+ return iterable.release ();
}
/* This is the only publicly exported function in this file. FRAME
struct ui_out *out, int frame_low, int frame_high)
{
struct gdbarch *gdbarch = NULL;
- struct cleanup *cleanups;
enum ext_lang_bt_status success = EXT_LANG_BT_ERROR;
- PyObject *iterable;
- PyObject *item;
- htab_t levels_printed;
if (!gdb_python_initialized)
return EXT_LANG_BT_NO_FILTERS;
}
END_CATCH
- cleanups = ensure_python_env (gdbarch, current_language);
+ gdbpy_enter enter_py (gdbarch, current_language);
+
+ /* When we're limiting the number of frames, be careful to request
+ one extra frame, so that we can print a message if there are more
+ frames. */
+ int frame_countdown = -1;
+ if ((flags & PRINT_MORE_FRAMES) != 0 && frame_low >= 0 && frame_high >= 0)
+ {
+ ++frame_high;
+ /* This has an extra +1 because it is checked before a frame is
+ printed. */
+ frame_countdown = frame_high - frame_low + 1;
+ }
- iterable = bootstrap_python_frame_filters (frame, frame_low, frame_high);
+ gdbpy_ref<> iterable (bootstrap_python_frame_filters (frame, frame_low,
+ frame_high));
if (iterable == NULL)
{
default backtrace. */
gdbpy_print_stack ();
- do_cleanups (cleanups);
return EXT_LANG_BT_NO_FILTERS;
}
/* If iterable is None, then there are no frame filters registered.
If this is the case, defer to default GDB printing routines in MI
and CLI. */
- make_cleanup_py_decref (iterable);
if (iterable == Py_None)
- {
- success = EXT_LANG_BT_NO_FILTERS;
- goto done;
- }
+ return EXT_LANG_BT_NO_FILTERS;
- levels_printed = htab_create (20,
- htab_hash_pointer,
- htab_eq_pointer,
- NULL);
- make_cleanup_htab_delete (levels_printed);
+ htab_up levels_printed (htab_create (20,
+ htab_hash_pointer,
+ htab_eq_pointer,
+ NULL));
- while ((item = PyIter_Next (iterable)))
+ while (true)
{
- struct cleanup *item_cleanup = make_cleanup_py_decref (item);
+ gdbpy_ref<> item (PyIter_Next (iterable.get ()));
+
+ if (item == NULL)
+ {
+ if (PyErr_Occurred ())
+ {
+ gdbpy_print_stack ();
+ return EXT_LANG_BT_ERROR;
+ }
+ break;
+ }
- success = py_print_frame (item, flags, args_type, out, 0,
- levels_printed);
+ if (frame_countdown != -1)
+ {
+ gdb_assert ((flags & PRINT_MORE_FRAMES) != 0);
+ --frame_countdown;
+ if (frame_countdown == 0)
+ {
+ /* We've printed all the frames we were asked to
+ print, but more frames existed. */
+ printf_filtered (_("(More stack frames follow...)\n"));
+ break;
+ }
+ }
- do_cleanups (item_cleanup);
+ success = py_print_frame (item.get (), flags, args_type, out, 0,
+ levels_printed.get ());
/* Do not exit on error printing a single frame. Print the
error and continue with other frames. */
gdbpy_print_stack ();
}
- if (item == NULL && PyErr_Occurred ())
- goto error;
-
- done:
- do_cleanups (cleanups);
return success;
-
- /* Exit and abandon backtrace on error, printing the exception that
- is set. */
- error:
- gdbpy_print_stack ();
- do_cleanups (cleanups);
- return EXT_LANG_BT_ERROR;
}
projects / deliverable / binutils-gdb.git / blobdiff