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// Copyright (c) Meta Platforms, Inc. and affiliates.
// SPDX-License-Identifier: LGPL-2.1-or-later
#include <inttypes.h>
#include "drgnpy.h"
PyObject *Symbol_wrap(struct drgn_symbol *sym, PyObject *name_obj)
{
Symbol *ret = call_tp_alloc(Symbol);
if (ret) {
ret->sym = sym;
ret->name_obj = name_obj;
Py_XINCREF(name_obj);
}
return (PyObject *)ret;
}
PyObject *Symbol_list_wrap(struct drgn_symbol **symbols, size_t count,
PyObject *name_obj)
{
_cleanup_pydecref_ PyObject *list = PyList_New(count);
if (!list) {
drgn_symbols_destroy(symbols, count);
return NULL;
}
for (size_t i = 0; i < count; i++) {
PyObject *pysym = Symbol_wrap(symbols[i], name_obj);
if (!pysym) {
/* Free symbols which aren't yet added to list. */
drgn_symbols_destroy(symbols, count);
/* Free list and all symbols already added. */
return NULL;
}
symbols[i] = NULL;
PyList_SET_ITEM(list, i, pysym);
}
free(symbols);
return_ptr(list);
}
static PyObject *Symbol_new(PyTypeObject *subtype, PyObject *args, PyObject *kwds)
{
struct drgn_symbol *sym;
static char *keywords[] = {"name", "address", "size", "binding", "kind", NULL};
PyObject *name_obj;
struct index_arg address = {}, size = {};
struct enum_arg binding = {
.type = SymbolBinding_class,
};
struct enum_arg kind = {
.type = SymbolKind_class,
};
if (!PyArg_ParseTupleAndKeywords(args, kwds, "O!O&O&O&O&:Symbol", keywords,
&PyUnicode_Type, &name_obj,
index_converter, &address,
index_converter, &size,
enum_converter, &binding,
enum_converter, &kind))
return NULL;
const char *name = PyUnicode_AsUTF8(name_obj);
if (!name)
return NULL;
struct drgn_error *err = drgn_symbol_create(
name, address.uvalue,size.uvalue, binding.value, kind.value,
DRGN_LIFETIME_EXTERNAL, &sym);
if (err)
return set_drgn_error(err);
PyObject *ret = Symbol_wrap(sym, name_obj);
if (!ret)
drgn_symbol_destroy(sym);
return ret;
}
static void Symbol_dealloc(Symbol *self)
{
drgn_symbol_destroy(self->sym);
Py_XDECREF(self->name_obj);
Py_TYPE(self)->tp_free((PyObject *)self);
}
static PyObject *Symbol_richcompare(Symbol *self, PyObject *other, int op)
{
if (!PyObject_TypeCheck(other, &Symbol_type) ||
(op != Py_EQ && op != Py_NE))
Py_RETURN_NOTIMPLEMENTED;
bool ret = drgn_symbol_eq(self->sym, ((Symbol *)other)->sym);
if (op == Py_NE)
ret = !ret;
Py_RETURN_BOOL(ret);
}
static PyObject *Symbol_get_name(Symbol *self, void *arg)
{
return PyUnicode_FromString(drgn_symbol_name(self->sym));
}
static PyObject *Symbol_get_address(Symbol *self, void *arg)
{
return PyLong_FromUint64(drgn_symbol_address(self->sym));
}
static PyObject *Symbol_get_size(Symbol *self, void *arg)
{
return PyLong_FromUint64(drgn_symbol_size(self->sym));
}
static PyObject *Symbol_get_binding(Symbol *self, void *arg)
{
return PyObject_CallFunction(SymbolBinding_class, "k",
(unsigned long)drgn_symbol_binding(self->sym));
}
static PyObject *Symbol_get_kind(Symbol *self, void *arg)
{
return PyObject_CallFunction(SymbolKind_class, "k",
(unsigned long)drgn_symbol_kind(self->sym));
}
static PyObject *Symbol_repr(Symbol *self)
{
_cleanup_pydecref_ PyObject *name =
PyUnicode_FromString(drgn_symbol_name(self->sym));
if (!name)
return NULL;
_cleanup_pydecref_ PyObject *binding = Symbol_get_binding(self, NULL);
if (!binding)
return NULL;
_cleanup_pydecref_ PyObject *kind = Symbol_get_kind(self, NULL);
if (!kind)
return NULL;
char address[19], size[19];
sprintf(address, "0x%" PRIx64, drgn_symbol_address(self->sym));
sprintf(size, "0x%" PRIx64, drgn_symbol_size(self->sym));
return PyUnicode_FromFormat("Symbol(name=%R, address=%s, size=%s, binding=%R, kind=%R)",
name, address, size, binding, kind);
}
static PyGetSetDef Symbol_getset[] = {
{"name", (getter)Symbol_get_name, NULL, drgn_Symbol_name_DOC},
{"address", (getter)Symbol_get_address, NULL, drgn_Symbol_address_DOC},
{"size", (getter)Symbol_get_size, NULL, drgn_Symbol_size_DOC},
{"binding", (getter)Symbol_get_binding, NULL, drgn_Symbol_binding_DOC},
{"kind", (getter)Symbol_get_kind, NULL, drgn_Symbol_kind_DOC},
{},
};
PyTypeObject Symbol_type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "_drgn.Symbol",
.tp_basicsize = sizeof(Symbol),
.tp_dealloc = (destructor)Symbol_dealloc,
.tp_repr = (reprfunc)Symbol_repr,
// Only references str objects, no GC needed.
.tp_flags = Py_TPFLAGS_DEFAULT,
.tp_doc = drgn_Symbol_DOC,
.tp_richcompare = (richcmpfunc)Symbol_richcompare,
.tp_getset = Symbol_getset,
.tp_new = Symbol_new,
};
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