/* Python interface to symbols.
- Copyright (C) 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
+ Copyright (C) 2008-2015 Free Software Foundation, Inc.
This file is part of GDB.
#include "defs.h"
#include "block.h"
-#include "exceptions.h"
#include "frame.h"
#include "symtab.h"
#include "python-internal.h"
return result;
}
+static PyObject *
+sympy_get_type (PyObject *self, void *closure)
+{
+ struct symbol *symbol = NULL;
+
+ SYMPY_REQUIRE_VALID (self, symbol);
+
+ if (SYMBOL_TYPE (symbol) == NULL)
+ {
+ Py_INCREF (Py_None);
+ return Py_None;
+ }
+
+ return type_to_type_object (SYMBOL_TYPE (symbol));
+}
+
static PyObject *
sympy_get_symtab (PyObject *self, void *closure)
{
SYMPY_REQUIRE_VALID (self, symbol);
- return symtab_to_symtab_object (SYMBOL_SYMTAB (symbol));
+ if (!SYMBOL_OBJFILE_OWNED (symbol))
+ Py_RETURN_NONE;
+
+ return symtab_to_symtab_object (symbol_symtab (symbol));
}
static PyObject *
sympy_is_constant (PyObject *self, void *closure)
{
struct symbol *symbol = NULL;
- enum address_class class;
+ enum address_class theclass;
SYMPY_REQUIRE_VALID (self, symbol);
- class = SYMBOL_CLASS (symbol);
+ theclass = SYMBOL_CLASS (symbol);
- return PyBool_FromLong (class == LOC_CONST || class == LOC_CONST_BYTES);
+ return PyBool_FromLong (theclass == LOC_CONST || theclass == LOC_CONST_BYTES);
}
static PyObject *
sympy_is_function (PyObject *self, void *closure)
{
struct symbol *symbol = NULL;
- enum address_class class;
+ enum address_class theclass;
SYMPY_REQUIRE_VALID (self, symbol);
- class = SYMBOL_CLASS (symbol);
+ theclass = SYMBOL_CLASS (symbol);
- return PyBool_FromLong (class == LOC_BLOCK);
+ return PyBool_FromLong (theclass == LOC_BLOCK);
}
static PyObject *
sympy_is_variable (PyObject *self, void *closure)
{
struct symbol *symbol = NULL;
- enum address_class class;
+ enum address_class theclass;
SYMPY_REQUIRE_VALID (self, symbol);
- class = SYMBOL_CLASS (symbol);
+ theclass = SYMBOL_CLASS (symbol);
return PyBool_FromLong (!SYMBOL_IS_ARGUMENT (symbol)
- && (class == LOC_LOCAL || class == LOC_REGISTER
- || class == LOC_STATIC || class == LOC_COMPUTED
- || class == LOC_OPTIMIZED_OUT));
+ && (theclass == LOC_LOCAL || theclass == LOC_REGISTER
+ || theclass == LOC_STATIC || theclass == LOC_COMPUTED
+ || theclass == LOC_OPTIMIZED_OUT));
+}
+
+/* Implementation of gdb.Symbol.needs_frame -> Boolean.
+ Returns true iff the symbol needs a frame for evaluation. */
+
+static PyObject *
+sympy_needs_frame (PyObject *self, void *closure)
+{
+ struct symbol *symbol = NULL;
+ int result = 0;
+
+ SYMPY_REQUIRE_VALID (self, symbol);
+
+ TRY
+ {
+ result = symbol_read_needs_frame (symbol);
+ }
+ CATCH (except, RETURN_MASK_ALL)
+ {
+ GDB_PY_HANDLE_EXCEPTION (except);
+ }
+ END_CATCH
+
+ if (result)
+ Py_RETURN_TRUE;
+ Py_RETURN_FALSE;
+}
+
+/* Implementation of gdb.Symbol.line -> int.
+ Returns the line number at which the symbol was defined. */
+
+static PyObject *
+sympy_line (PyObject *self, void *closure)
+{
+ struct symbol *symbol = NULL;
+
+ SYMPY_REQUIRE_VALID (self, symbol);
+
+ return PyInt_FromLong (SYMBOL_LINE (symbol));
}
/* Implementation of gdb.Symbol.is_valid (self) -> Boolean.
Py_RETURN_TRUE;
}
+/* Implementation of gdb.Symbol.value (self[, frame]) -> gdb.Value. Returns
+ the value of the symbol, or an error in various circumstances. */
+
+static PyObject *
+sympy_value (PyObject *self, PyObject *args)
+{
+ struct symbol *symbol = NULL;
+ struct frame_info *frame_info = NULL;
+ PyObject *frame_obj = NULL;
+ struct value *value = NULL;
+
+ if (!PyArg_ParseTuple (args, "|O", &frame_obj))
+ return NULL;
+
+ if (frame_obj != NULL && !PyObject_TypeCheck (frame_obj, &frame_object_type))
+ {
+ PyErr_SetString (PyExc_TypeError, "argument is not a frame");
+ return NULL;
+ }
+
+ SYMPY_REQUIRE_VALID (self, symbol);
+ if (SYMBOL_CLASS (symbol) == LOC_TYPEDEF)
+ {
+ PyErr_SetString (PyExc_TypeError, "cannot get the value of a typedef");
+ return NULL;
+ }
+
+ TRY
+ {
+ if (frame_obj != NULL)
+ {
+ frame_info = frame_object_to_frame_info (frame_obj);
+ if (frame_info == NULL)
+ error (_("invalid frame"));
+ }
+
+ if (symbol_read_needs_frame (symbol) && frame_info == NULL)
+ error (_("symbol requires a frame to compute its value"));
+
+ /* TODO: currently, we have no way to recover the block in which SYMBOL
+ was found, so we have no block to pass to read_var_value. This will
+ yield an incorrect value when symbol is not local to FRAME_INFO (this
+ can happen with nested functions). */
+ value = read_var_value (symbol, NULL, frame_info);
+ }
+ CATCH (except, RETURN_MASK_ALL)
+ {
+ GDB_PY_HANDLE_EXCEPTION (except);
+ }
+ END_CATCH
+
+ return value_to_value_object (value);
+}
+
/* Given a symbol, and a symbol_object that has previously been
allocated and initialized, populate the symbol_object with the
struct symbol data. Also, register the symbol_object life-cycle
{
obj->symbol = symbol;
obj->prev = NULL;
- if (SYMBOL_SYMTAB (symbol))
+ if (SYMBOL_OBJFILE_OWNED (symbol)
+ && symbol_symtab (symbol) != NULL)
{
- obj->next = objfile_data (SYMBOL_SYMTAB (symbol)->objfile,
- sympy_objfile_data_key);
+ struct objfile *objfile = symbol_objfile (symbol);
+ obj->next = objfile_data (objfile, sympy_objfile_data_key);
if (obj->next)
obj->next->prev = obj;
- set_objfile_data (SYMBOL_SYMTAB (symbol)->objfile,
- sympy_objfile_data_key, obj);
+ set_objfile_data (objfile, sympy_objfile_data_key, obj);
}
else
obj->next = NULL;
if (sym_obj->prev)
sym_obj->prev->next = sym_obj->next;
- else if (SYMBOL_SYMTAB (sym_obj->symbol))
+ else if (sym_obj->symbol != NULL
+ && SYMBOL_OBJFILE_OWNED (sym_obj->symbol)
+ && symbol_symtab (sym_obj->symbol) != NULL)
{
- set_objfile_data (SYMBOL_SYMTAB (sym_obj->symbol)->objfile,
+ set_objfile_data (symbol_objfile (sym_obj->symbol),
sympy_objfile_data_key, sym_obj->next);
}
if (sym_obj->next)
PyObject *
gdbpy_lookup_symbol (PyObject *self, PyObject *args, PyObject *kw)
{
- int domain = VAR_DOMAIN, is_a_field_of_this = 0;
+ int domain = VAR_DOMAIN;
+ struct field_of_this_result is_a_field_of_this;
const char *name;
static char *keywords[] = { "name", "block", "domain", NULL };
- struct symbol *symbol;
+ struct symbol *symbol = NULL;
PyObject *block_obj = NULL, *ret_tuple, *sym_obj, *bool_obj;
- struct block *block = NULL;
+ const struct block *block = NULL;
if (! PyArg_ParseTupleAndKeywords (args, kw, "s|O!i", keywords, &name,
&block_object_type, &block_obj, &domain))
else
{
struct frame_info *selected_frame;
- volatile struct gdb_exception except;
- TRY_CATCH (except, RETURN_MASK_ALL)
+ TRY
{
- selected_frame = get_selected_frame (_("No frame selected."));
- block = block_for_pc (get_frame_address_in_block (selected_frame));
+ selected_frame = get_selected_frame (_("No frame selected."));
+ block = get_frame_block (selected_frame, NULL);
}
- GDB_PY_HANDLE_EXCEPTION (except);
+ CATCH (except, RETURN_MASK_ALL)
+ {
+ GDB_PY_HANDLE_EXCEPTION (except);
+ }
+ END_CATCH
}
- symbol = lookup_symbol (name, block, domain, &is_a_field_of_this);
+ TRY
+ {
+ symbol = lookup_symbol (name, block, (domain_enum) domain,
+ &is_a_field_of_this).symbol;
+ }
+ CATCH (except, RETURN_MASK_ALL)
+ {
+ GDB_PY_HANDLE_EXCEPTION (except);
+ }
+ END_CATCH
ret_tuple = PyTuple_New (2);
if (!ret_tuple)
}
PyTuple_SET_ITEM (ret_tuple, 0, sym_obj);
- bool_obj = is_a_field_of_this? Py_True : Py_False;
+ bool_obj = (is_a_field_of_this.type != NULL) ? Py_True : Py_False;
Py_INCREF (bool_obj);
PyTuple_SET_ITEM (ret_tuple, 1, bool_obj);
int domain = VAR_DOMAIN;
const char *name;
static char *keywords[] = { "name", "domain", NULL };
- struct symbol *symbol;
+ struct symbol *symbol = NULL;
PyObject *sym_obj;
if (! PyArg_ParseTupleAndKeywords (args, kw, "s|i", keywords, &name,
&domain))
return NULL;
- symbol = lookup_symbol_global (name, NULL, domain);
+ TRY
+ {
+ symbol = lookup_global_symbol (name, NULL, (domain_enum) domain).symbol;
+ }
+ CATCH (except, RETURN_MASK_ALL)
+ {
+ GDB_PY_HANDLE_EXCEPTION (except);
+ }
+ END_CATCH
if (symbol)
{
}
}
-void
+int
gdbpy_initialize_symbols (void)
{
if (PyType_Ready (&symbol_object_type) < 0)
- return;
+ return -1;
/* Register an objfile "free" callback so we can properly
invalidate symbol when an object file that is about to be
sympy_objfile_data_key
= register_objfile_data_with_cleanup (NULL, del_objfile_symbols);
- PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_UNDEF", LOC_UNDEF);
- PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_CONST", LOC_CONST);
- PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_STATIC", LOC_STATIC);
- PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_REGISTER", LOC_REGISTER);
- PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_ARG", LOC_ARG);
- PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_REF_ARG", LOC_REF_ARG);
- PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_LOCAL", LOC_LOCAL);
- PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_TYPEDEF", LOC_TYPEDEF);
- PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_LABEL", LOC_LABEL);
- PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_BLOCK", LOC_BLOCK);
- PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_CONST_BYTES",
- LOC_CONST_BYTES);
- PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_UNRESOLVED",
- LOC_UNRESOLVED);
- PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_OPTIMIZED_OUT",
- LOC_OPTIMIZED_OUT);
- PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_COMPUTED", LOC_COMPUTED);
- PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_REGPARM_ADDR",
- LOC_REGPARM_ADDR);
- PyModule_AddIntConstant (gdb_module, "SYMBOL_UNDEF_DOMAIN", UNDEF_DOMAIN);
- PyModule_AddIntConstant (gdb_module, "SYMBOL_VAR_DOMAIN", VAR_DOMAIN);
- PyModule_AddIntConstant (gdb_module, "SYMBOL_STRUCT_DOMAIN", STRUCT_DOMAIN);
- PyModule_AddIntConstant (gdb_module, "SYMBOL_LABEL_DOMAIN", LABEL_DOMAIN);
- PyModule_AddIntConstant (gdb_module, "SYMBOL_VARIABLES_DOMAIN",
- VARIABLES_DOMAIN);
- PyModule_AddIntConstant (gdb_module, "SYMBOL_FUNCTIONS_DOMAIN",
- FUNCTIONS_DOMAIN);
- PyModule_AddIntConstant (gdb_module, "SYMBOL_TYPES_DOMAIN", TYPES_DOMAIN);
-
- Py_INCREF (&symbol_object_type);
- PyModule_AddObject (gdb_module, "Symbol", (PyObject *) &symbol_object_type);
+ if (PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_UNDEF", LOC_UNDEF) < 0
+ || PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_CONST",
+ LOC_CONST) < 0
+ || PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_STATIC",
+ LOC_STATIC) < 0
+ || PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_REGISTER",
+ LOC_REGISTER) < 0
+ || PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_ARG",
+ LOC_ARG) < 0
+ || PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_REF_ARG",
+ LOC_REF_ARG) < 0
+ || PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_LOCAL",
+ LOC_LOCAL) < 0
+ || PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_TYPEDEF",
+ LOC_TYPEDEF) < 0
+ || PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_LABEL",
+ LOC_LABEL) < 0
+ || PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_BLOCK",
+ LOC_BLOCK) < 0
+ || PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_CONST_BYTES",
+ LOC_CONST_BYTES) < 0
+ || PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_UNRESOLVED",
+ LOC_UNRESOLVED) < 0
+ || PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_OPTIMIZED_OUT",
+ LOC_OPTIMIZED_OUT) < 0
+ || PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_COMPUTED",
+ LOC_COMPUTED) < 0
+ || PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_REGPARM_ADDR",
+ LOC_REGPARM_ADDR) < 0
+ || PyModule_AddIntConstant (gdb_module, "SYMBOL_UNDEF_DOMAIN",
+ UNDEF_DOMAIN) < 0
+ || PyModule_AddIntConstant (gdb_module, "SYMBOL_VAR_DOMAIN",
+ VAR_DOMAIN) < 0
+ || PyModule_AddIntConstant (gdb_module, "SYMBOL_STRUCT_DOMAIN",
+ STRUCT_DOMAIN) < 0
+ || PyModule_AddIntConstant (gdb_module, "SYMBOL_LABEL_DOMAIN",
+ LABEL_DOMAIN) < 0
+ || PyModule_AddIntConstant (gdb_module, "SYMBOL_VARIABLES_DOMAIN",
+ VARIABLES_DOMAIN) < 0
+ || PyModule_AddIntConstant (gdb_module, "SYMBOL_FUNCTIONS_DOMAIN",
+ FUNCTIONS_DOMAIN) < 0
+ || PyModule_AddIntConstant (gdb_module, "SYMBOL_TYPES_DOMAIN",
+ TYPES_DOMAIN) < 0)
+ return -1;
+
+ return gdb_pymodule_addobject (gdb_module, "Symbol",
+ (PyObject *) &symbol_object_type);
}
\f
static PyGetSetDef symbol_object_getset[] = {
+ { "type", sympy_get_type, NULL,
+ "Type of the symbol.", NULL },
{ "symtab", sympy_get_symtab, NULL,
"Symbol table in which the symbol appears.", NULL },
{ "name", sympy_get_name, NULL,
"True if the symbol is a function or method." },
{ "is_variable", sympy_is_variable, NULL,
"True if the symbol is a variable." },
+ { "needs_frame", sympy_needs_frame, NULL,
+ "True if the symbol requires a frame for evaluation." },
+ { "line", sympy_line, NULL,
+ "The source line number at which the symbol was defined." },
{ NULL } /* Sentinel */
};
{ "is_valid", sympy_is_valid, METH_NOARGS,
"is_valid () -> Boolean.\n\
Return true if this symbol is valid, false if not." },
+ { "value", sympy_value, METH_VARARGS,
+ "value ([frame]) -> gdb.Value\n\
+Return the value of the symbol." },
{NULL} /* Sentinel */
};
PyTypeObject symbol_object_type = {
- PyObject_HEAD_INIT (NULL)
- 0, /*ob_size*/
+ PyVarObject_HEAD_INIT (NULL, 0)
"gdb.Symbol", /*tp_name*/
sizeof (symbol_object), /*tp_basicsize*/
0, /*tp_itemsize*/
projects / deliverable / binutils-gdb.git / blobdiff