From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 89223 invoked by alias); 4 Nov 2016 07:55:26 -0000 Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org Received: (qmail 88864 invoked by uid 89); 4 Nov 2016 07:55:24 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-3.1 required=5.0 tests=AWL,BAYES_00,KAM_LAZY_DOMAIN_SECURITY,RP_MATCHES_RCVD autolearn=ham version=3.3.2 spammy=2016-11-04, corp, Corp, Either X-HELO: mga14.intel.com Received: from mga14.intel.com (HELO mga14.intel.com) (192.55.52.115) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Fri, 04 Nov 2016 07:55:14 +0000 Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga103.fm.intel.com with ESMTP; 04 Nov 2016 00:55:12 -0700 X-ExtLoop1: 1 Received: from irvmail001.ir.intel.com ([163.33.26.43]) by orsmga004.jf.intel.com with ESMTP; 04 Nov 2016 00:55:11 -0700 Received: from ulvlx001.iul.intel.com (ulvlx001.iul.intel.com [172.28.207.17]) by irvmail001.ir.intel.com (8.14.3/8.13.6/MailSET/Hub) with ESMTP id uA47tA4N011386; Fri, 4 Nov 2016 07:55:10 GMT Received: from ulvlx001.iul.intel.com (localhost [127.0.0.1]) by ulvlx001.iul.intel.com with ESMTP id uA47tAO8014844; Fri, 4 Nov 2016 08:55:10 +0100 Received: (from twiederh@localhost) by ulvlx001.iul.intel.com with œ id uA47tArP014841; Fri, 4 Nov 2016 08:55:10 +0100 From: Tim Wiederhake To: gdb-patches@sourceware.org Cc: palves@redhat.com, markus.t.metzger@intel.com Subject: [PATCH v2 6/8] python: Implement btrace Python bindings for record history. Date: Fri, 04 Nov 2016 07:55:00 -0000 Message-Id: <1478246074-14526-7-git-send-email-tim.wiederhake@intel.com> In-Reply-To: <1478246074-14526-1-git-send-email-tim.wiederhake@intel.com> References: <1478246074-14526-1-git-send-email-tim.wiederhake@intel.com> X-IsSubscribed: yes X-SW-Source: 2016-11/txt/msg00089.txt.bz2 This patch implements the gdb.Record Python object methods and fields for record target btrace. Additionally, add a stub for record target full. 2016-11-04 Tim Wiederhake gdb/ChangeLog: * Makefile.in (SUBDIR_PYTHON_OBS): Add py-btrace.o. (SUBDIR_PYTHON_SRCS): Add py-btrace.c. (py-btrace.o): New rule. * python/py-btrace.c: New file. * python/py-btrace.h: New file. * python/python-internal.h (gdbpy_initialize_btrace): New export. * python/python.c (_initialize_python): Add gdbpy_initialize_btrace. * record-btrace.c: Add conditional includes for python/py-record.h and python/py-btrace.h (record_btrace_python_interface): New function. (init_record_btrace_ops): Add record_btrace_python_interface. * record-full.c: Add conditional include for python/py-record.h. (record_full_python_interface): New function. (init_record_full_ops): Add record_full_python_interface. --- gdb/Makefile.in | 6 + gdb/python/py-btrace.c | 996 +++++++++++++++++++++++++++++++++++++++++++ gdb/python/py-btrace.h | 32 ++ gdb/python/python-internal.h | 2 + gdb/python/python.c | 1 + gdb/record-btrace.c | 38 ++ gdb/record-full.c | 20 + 7 files changed, 1095 insertions(+) create mode 100644 gdb/python/py-btrace.c create mode 100644 gdb/python/py-btrace.h diff --git a/gdb/Makefile.in b/gdb/Makefile.in index 6fe69bf..70e3bb5 100644 --- a/gdb/Makefile.in +++ b/gdb/Makefile.in @@ -381,6 +381,7 @@ SUBDIR_PYTHON_OBS = \ py-block.o \ py-bpevent.o \ py-breakpoint.o \ + py-btrace.o \ py-cmd.o \ py-continueevent.o \ py-xmethods.o \ @@ -422,6 +423,7 @@ SUBDIR_PYTHON_SRCS = \ python/py-block.c \ python/py-bpevent.c \ python/py-breakpoint.c \ + python/py-btrace.c \ python/py-cmd.c \ python/py-continueevent.c \ python/py-xmethods.c \ @@ -2606,6 +2608,10 @@ py-breakpoint.o: $(srcdir)/python/py-breakpoint.c $(COMPILE) $(PYTHON_CFLAGS) $(srcdir)/python/py-breakpoint.c $(POSTCOMPILE) +py-btrace.o: $(srcdir)/python/py-btrace.c + $(COMPILE) $(PYTHON_CFLAGS) $(srcdir)/python/py-btrace.c + $(POSTCOMPILE) + py-cmd.o: $(srcdir)/python/py-cmd.c $(COMPILE) $(PYTHON_CFLAGS) $(srcdir)/python/py-cmd.c $(POSTCOMPILE) diff --git a/gdb/python/py-btrace.c b/gdb/python/py-btrace.c new file mode 100644 index 0000000..1ad22e0 --- /dev/null +++ b/gdb/python/py-btrace.c @@ -0,0 +1,996 @@ +/* Python interface to btrace instruction history. + + Copyright 2016 Free Software Foundation, Inc. + + Contributed by Intel Corp. + + This file is part of GDB. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . */ + +#include "defs.h" +#include "py-btrace.h" +#include "py-record.h" +#include "gdbcore.h" +#include "gdbcmd.h" +#include "gdbthread.h" +#include "btrace.h" +#include "disasm.h" + +#if defined (IS_PY3K) + +#define BTPY_PYSLICE(x) (x) +#define PyInt_FromSsize_t PyLong_FromSsize_t +#define PyInt_FromSize_t PyLong_FromSize_t +#define PyInt_AsSsize_t PyLong_AsSsize_t + +#else + +#define BTPY_PYSLICE(x) ((PySliceObject *) x) + +#endif + +#define BTPY_REQUIRE_VALID_INSN(obj, iter) \ + do { \ + struct thread_info *tinfo = find_thread_ptid (obj->ptid); \ + if (tinfo == NULL || btrace_is_empty (tinfo)) \ + return PyErr_Format (gdbpy_gdb_error, _("Empty branch trace."));\ + if (0 == btrace_find_insn_by_number (&iter, &tinfo->btrace, \ + obj->number)) \ + return PyErr_Format (gdbpy_gdb_error, _("No such instruction."));\ + } while (0) + +#define BTPY_REQUIRE_VALID_CALL(obj, iter) \ + do { \ + struct thread_info *tinfo = find_thread_ptid (obj->ptid); \ + if (tinfo == NULL || btrace_is_empty (tinfo)) \ + return PyErr_Format (gdbpy_gdb_error, _("Empty branch trace."));\ + if (0 == btrace_find_call_by_number (&iter, &tinfo->btrace, \ + obj->number)) \ + return PyErr_Format (gdbpy_gdb_error, _("No such call segment."));\ + } while (0) + +/* Python object for btrace records. This can either be an instruction or a + function call segment, depending on the chosen type. */ + +typedef struct { + PyObject_HEAD + + /* The thread this object belongs to. */ + ptid_t ptid; + + /* Instruction number or function call segment number, depending on the type + of this object. */ + Py_ssize_t number; +} btpy_object; + +/* Python object for btrace record lists. */ + +typedef struct { + PyObject_HEAD + + /* The thread this list belongs to. */ + ptid_t ptid; + + /* The first index being part of this list. */ + Py_ssize_t first; + + /* The last index begin part of this list. */ + Py_ssize_t last; + + /* Stride size. */ + Py_ssize_t step; + + /* Either &BTPY_CALL_TYPE or &BTPY_INSN_TYPE. */ + PyTypeObject* element_type; +} btpy_list_object; + +/* Python type for btrace instructions. */ + +static PyTypeObject btpy_insn_type = { + PyVarObject_HEAD_INIT (NULL, 0) +}; + +/* Python type for btrace function-calls. */ + +static PyTypeObject btpy_call_type = { + PyVarObject_HEAD_INIT (NULL, 0) +}; + +/* Python type for btrace lists. */ + +static PyTypeObject btpy_list_type = { + PyVarObject_HEAD_INIT (NULL, 0) +}; + +/* Create a new gdb.BtraceInstruction or gdb.BtraceFunctionCall object, + depending on TYPE. */ + +static PyObject * +btpy_new (ptid_t ptid, Py_ssize_t number, PyTypeObject* type) +{ + btpy_object * const obj = PyObject_New (btpy_object, type); + + if (obj == NULL) + return NULL; + + obj->ptid = ptid; + obj->number = number; + + return (PyObject *) obj; +} + +/* Create a new gdb.BtraceInstruction object. */ + +static PyObject * +btpy_insn_new (ptid_t ptid, Py_ssize_t number) +{ + return btpy_new (ptid, number, &btpy_insn_type); +} + +/* Create a new gdb.BtraceFunctionCall object. */ + +static PyObject * +btpy_call_new (ptid_t ptid, Py_ssize_t number) +{ + return btpy_new (ptid, number, &btpy_call_type); +} + +/* Create a new gdb.BtraceList object. */ + +static PyObject * +btpy_list_new (ptid_t ptid, Py_ssize_t first, Py_ssize_t last, Py_ssize_t step, + PyTypeObject *element_type) +{ + btpy_list_object * const obj = PyObject_New (btpy_list_object, + &btpy_list_type); + + if (obj == NULL) + return NULL; + + obj->ptid = ptid; + obj->first = first; + obj->last = last; + obj->step = step; + obj->element_type = element_type; + + return (PyObject *) obj; +} + +/* Implementation of BtraceInstruction.number [int] and + BtraceFunctionCall.number [int]. */ + +static PyObject * +btpy_number (PyObject *self, void *closure) +{ + const btpy_object * const obj = (btpy_object *) self; + + return PyInt_FromSsize_t (obj->number); +} + +/* Implementation of BtraceInstruction.__hash__ () -> int and + BtraceFunctionCall.__hash__ () -> int. */ + +static Py_hash_t +btpy_hash (PyObject *self) +{ + const btpy_object * const obj = (btpy_object *) self; + + return obj->number; +} + +/* Implementation of BtraceInstruction.error [int]. Returns the + error code for gaps. */ + +static PyObject * +btpy_insn_error (PyObject *self, void *closure) +{ + const btpy_object * const obj = (btpy_object *) self; + struct btrace_insn_iterator iter; + int error; + + BTPY_REQUIRE_VALID_INSN (obj, iter); + + error = btrace_insn_get_error (&iter); + + if (error == 0) + Py_RETURN_NONE; + + return PyInt_FromLong (error); +} + +/* Implementation of BtraceInstruction.symbol [gdb.Symtab_and_line]. + Return the symbol associated with this instruction. */ + +static PyObject * +btpy_insn_symbol (PyObject *self, void *closure) +{ + const btpy_object * const obj = (btpy_object *) self; + const struct btrace_insn *insn; + struct btrace_insn_iterator iter; + PyObject *result = NULL; + + BTPY_REQUIRE_VALID_INSN (obj, iter); + + insn = btrace_insn_get (&iter); + if (insn == NULL) + Py_RETURN_NONE; + + TRY + { + result = symtab_and_line_to_sal_object (find_pc_line (insn->pc, 0)); + } + CATCH (except, RETURN_MASK_ALL) + { + GDB_PY_HANDLE_EXCEPTION (except); + } + END_CATCH + + return result; +} + +/* Implementation of BtraceInstruction.pc [int]. Returns + the instruction address. */ + +static PyObject * +btpy_insn_pc (PyObject *self, void *closure) +{ + const btpy_object * const obj = (btpy_object *) self; + const struct btrace_insn *insn; + struct btrace_insn_iterator iter; + + BTPY_REQUIRE_VALID_INSN (obj, iter); + + insn = btrace_insn_get (&iter); + if (insn == NULL) + Py_RETURN_NONE; + + return PyInt_FromSize_t (insn->pc); +} + +/* Implementation of BtraceInstruction.size [int]. Returns + the instruction size. */ + +static PyObject * +btpy_insn_size (PyObject *self, void *closure) +{ + const btpy_object * const obj = (btpy_object *) self; + const struct btrace_insn *insn; + struct btrace_insn_iterator iter; + + BTPY_REQUIRE_VALID_INSN (obj, iter); + + insn = btrace_insn_get (&iter); + if (insn == NULL) + Py_RETURN_NONE; + + return PyInt_FromLong (insn->size); +} + +/* Implementation of BtraceInstruction.is_speculative [bool]. + Returns if this instruction was executed speculatively. */ + +static PyObject * +btpy_insn_is_speculative (PyObject *self, void *closure) +{ + const btpy_object * const obj = (btpy_object *) self; + const struct btrace_insn *insn; + struct btrace_insn_iterator iter; + + BTPY_REQUIRE_VALID_INSN (obj, iter); + + insn = btrace_insn_get (&iter); + if (insn == NULL) + Py_RETURN_NONE; + + if (insn->flags & BTRACE_INSN_FLAG_SPECULATIVE) + Py_RETURN_TRUE; + else + Py_RETURN_FALSE; +} + +/* Implementation of BtraceInstruction.data [buffer]. + Returns raw instruction data. */ + +static PyObject * +btpy_insn_data (PyObject *self, void *closure) +{ + const btpy_object * const obj = (btpy_object *) self; + const struct btrace_insn *insn; + struct btrace_insn_iterator iter; + gdb_byte *buffer = NULL; + PyObject *object; + + BTPY_REQUIRE_VALID_INSN (obj, iter); + + insn = btrace_insn_get (&iter); + if (insn == NULL) + Py_RETURN_NONE; + + TRY + { + buffer = (gdb_byte *) xmalloc (insn->size); + read_memory (insn->pc, buffer, insn->size); + } + CATCH (except, RETURN_MASK_ALL) + { + xfree (buffer); + GDB_PY_HANDLE_EXCEPTION (except); + } + END_CATCH + + object = PyBytes_FromStringAndSize ((const char*) buffer, insn->size); + xfree (buffer); + + if (object == NULL) + return NULL; + + return PyMemoryView_FromObject (object); +} + +/* Implementation of BtraceInstruction.decode [str]. Returns + the instruction as human readable string. */ + +static PyObject * +btpy_insn_decode (PyObject *self, void *closure) +{ + const btpy_object * const obj = (btpy_object *) self; + const struct btrace_insn *insn; + struct btrace_insn_iterator iter; + struct cleanup *cleanup; + struct ui_file *strfile; + char* buffer; + PyObject *object; + + BTPY_REQUIRE_VALID_INSN (obj, iter); + + insn = btrace_insn_get (&iter); + if (insn == NULL) + { + int error_code = btrace_insn_get_error (&iter); + const struct btrace_config *config; + + config = btrace_conf (&find_thread_ptid (obj->ptid)->btrace); + return PyBytes_FromString (btrace_decode_error (config->format, + error_code)); + } + + strfile = mem_fileopen (); + cleanup = make_cleanup_ui_file_delete (strfile); + + gdb_print_insn (target_gdbarch (), insn->pc, strfile, NULL); + + buffer = ui_file_xstrdup (strfile, NULL); + make_cleanup (xfree, buffer); + + object = PyBytes_FromString (buffer); + + do_cleanups (cleanup); + return object; +} + +/* Implementation of BtraceFunctionCall.level [int]. Returns the + call level. */ + +static PyObject * +btpy_call_level (PyObject *self, void *closure) +{ + const btpy_object * const obj = (btpy_object *) self; + const struct btrace_function *func; + struct btrace_call_iterator iter; + + BTPY_REQUIRE_VALID_CALL (obj, iter); + + func = btrace_call_get (&iter); + if (func == NULL) + Py_RETURN_NONE; + + return PyInt_FromLong (iter.btinfo->level + func->level); +} + +/* Implementation of BtraceFunctionCall.symbol [gdb.Symbol]. Returns + the symbol associated with this function call. */ + +static PyObject * +btpy_call_symbol (PyObject *self, void *closure) +{ + const btpy_object * const obj = (btpy_object *) self; + const struct btrace_function *func; + struct btrace_call_iterator iter; + + BTPY_REQUIRE_VALID_CALL (obj, iter); + + func = btrace_call_get (&iter); + if (func == NULL) + Py_RETURN_NONE; + + if (func->sym == NULL) + Py_RETURN_NONE; + + return symbol_to_symbol_object (func->sym); +} + +/* Implementation of BtraceFunctionCall.instructions [list]. + Return the list of instructions that belong to this function call. */ + +static PyObject * +btpy_call_instructions (PyObject *self, void *closure) +{ + const btpy_object * const obj = (btpy_object *) self; + const struct btrace_function *func; + struct btrace_call_iterator iter; + unsigned int len; + + BTPY_REQUIRE_VALID_CALL (obj, iter); + + func = btrace_call_get (&iter); + if (func == NULL) + Py_RETURN_NONE; + + len = VEC_length (btrace_insn_s, func->insn); + + /* Gaps count as one instruction. */ + if (len == 0) + len = 1; + + return btpy_list_new (obj->ptid, func->insn_offset, func->insn_offset + len, + 1, &btpy_insn_type); +} + +/* Implementation of BtraceFunctionCall.up [gdb.BtraceRecordCall]. + Return the caller / returnee of this function. */ + +static PyObject * +btpy_call_up (PyObject *self, void *closure) +{ + const btpy_object * const obj = (btpy_object *) self; + const struct btrace_function *func; + struct btrace_call_iterator iter; + + BTPY_REQUIRE_VALID_CALL (obj, iter); + + func = btrace_call_get (&iter); + if (func == NULL) + Py_RETURN_NONE; + + if (func->up == NULL) + Py_RETURN_NONE; + + return btpy_call_new (obj->ptid, func->up->number); +} + +/* Implementation of BtraceFunctionCall.prev_sibling [BtraceFunctionCall]. + Return a previous segment of this function. */ + +static PyObject * +btpy_call_prev_sibling (PyObject *self, void *closure) +{ + const btpy_object * const obj = (btpy_object *) self; + const struct btrace_function *func; + struct btrace_call_iterator iter; + + BTPY_REQUIRE_VALID_CALL (obj, iter); + + func = btrace_call_get (&iter); + if (func == NULL) + Py_RETURN_NONE; + + if (func->segment.prev == NULL) + Py_RETURN_NONE; + + return btpy_call_new (obj->ptid, func->segment.prev->number); +} + +/* Implementation of BtraceFunctionCall.next_sibling [BtraceFunctionCall]. + Return a following segment of this function. */ + +static PyObject * +btpy_call_next_sibling (PyObject *self, void *closure) +{ + const btpy_object * const obj = (btpy_object *) self; + const struct btrace_function *func; + struct btrace_call_iterator iter; + + BTPY_REQUIRE_VALID_CALL (obj, iter); + + func = btrace_call_get (&iter); + if (func == NULL) + Py_RETURN_NONE; + + if (func->segment.next == NULL) + Py_RETURN_NONE; + + return btpy_call_new (obj->ptid, func->segment.next->number); +} + +/* Python rich compare function to allow for equality and inequality checks + in Python. */ + +static PyObject * +btpy_richcompare (PyObject *self, PyObject *other, int op) +{ + const btpy_object * const obj1 = (btpy_object *) self; + const btpy_object * const obj2 = (btpy_object *) other; + + if (Py_TYPE (self) != Py_TYPE (other)) + { + Py_INCREF (Py_NotImplemented); + return Py_NotImplemented; + } + + switch (op) + { + case Py_EQ: + if (ptid_equal (obj1->ptid, obj2->ptid) && obj1->number == obj2->number) + Py_RETURN_TRUE; + else + Py_RETURN_FALSE; + + case Py_NE: + if (!ptid_equal (obj1->ptid, obj2->ptid) || obj1->number != obj2->number) + Py_RETURN_TRUE; + else + Py_RETURN_FALSE; + + default: + break; + } + + Py_INCREF (Py_NotImplemented); + return Py_NotImplemented; +} + +/* Implementation of BtraceList.__len__ (self) -> int. */ + +static Py_ssize_t +btpy_list_length (PyObject *self) +{ + const btpy_list_object * const obj = (btpy_list_object *) self; + const Py_ssize_t distance = obj->last - obj->first; + const Py_ssize_t result = distance / obj->step; + + if ((distance % obj->step) == 0) + return result; + + return result + 1; +} + +/* Implementation of + BtraceList.__getitem__ (self, key) -> BtraceInstruction and + BtraceList.__getitem__ (self, key) -> BtraceFunctionCall. */ + +static PyObject * +btpy_list_item (PyObject *self, Py_ssize_t index) +{ + const btpy_list_object * const obj = (btpy_list_object *) self; + struct thread_info * const tinfo = find_thread_ptid (obj->ptid); + + if (index < 0 || index >= btpy_list_length (self)) + return PyErr_Format (PyExc_IndexError, _("Index out of range: %zd."), + index); + + return btpy_new (obj->ptid, obj->first + (obj->step * index), + obj->element_type); +} + +/* Implementation of BtraceList.__getitem__ (self, slice) -> BtraceList. */ + +static PyObject * +btpy_list_slice (PyObject *self, PyObject *value) +{ + const btpy_list_object * const obj = (btpy_list_object *) self; + const Py_ssize_t length = btpy_list_length (self); + Py_ssize_t start, stop, step, slicelength; + + if (PyInt_Check (value)) + { + Py_ssize_t index = PyInt_AsSsize_t (value); + + /* Emulate Python behavior for negative indices. */ + if (index < 0) + index += length; + + return btpy_list_item (self, index); + } + + if (!PySlice_Check (value)) + return PyErr_Format (PyExc_TypeError, _("Index must be int or slice.")); + + if (0 != PySlice_GetIndicesEx (BTPY_PYSLICE (value), length, &start, &stop, + &step, &slicelength)) + return NULL; + + return btpy_list_new (obj->ptid, obj->first + obj->step * start, + obj->first + obj->step * stop, obj->step * step, + obj->element_type); +} + +/* Helper function that returns the position of an element in a BtraceList + or -1 if the element is not in the list. */ + +static LONGEST +btpy_list_position (PyObject *self, PyObject *value) +{ + const btpy_list_object * const list_obj = (btpy_list_object *) self; + const btpy_object * const obj = (btpy_object *) value; + Py_ssize_t index = obj->number; + + if (list_obj->element_type != Py_TYPE (value)) + return -1; + + if (!ptid_equal (list_obj->ptid, obj->ptid)) + return -1; + + if (index < list_obj->first || index > list_obj->last) + return -1; + + index -= list_obj->first; + + if (index % list_obj->step != 0) + return -1; + + return index / list_obj->step; +} + +/* Implementation of "in" operator for BtraceLists. */ + +static int +btpy_list_contains (PyObject *self, PyObject *value) +{ + if (btpy_list_position (self, value) < 0) + return 0; + + return 1; +} + +/* Implementation of BtraceLists.index (self, value) -> int. */ + +static PyObject * +btpy_list_index (PyObject *self, PyObject *value) +{ + const LONGEST index = btpy_list_position (self, value); + + if (index < 0) + return PyErr_Format (PyExc_ValueError, _("Not in list.")); + + return PyInt_FromSize_t (index); +} + +/* Implementation of BtraceList.count (self, value) -> int. */ + +static PyObject * +btpy_list_count (PyObject *self, PyObject *value) +{ + const LONGEST index = btpy_list_position (self, value); + + if (index < 0) + return PyInt_FromLong (0); + else + return PyInt_FromLong (1); +} + +/* Python rich compare function to allow for equality and inequality checks + in Python. */ + +static PyObject * +btpy_list_richcompare (PyObject *self, PyObject *other, int op) +{ + const btpy_list_object * const obj1 = (btpy_list_object *) self; + const btpy_list_object * const obj2 = (btpy_list_object *) other; + + if (Py_TYPE (self) != Py_TYPE (other)) + { + Py_INCREF (Py_NotImplemented); + return Py_NotImplemented; + } + + switch (op) + { + case Py_EQ: + if (ptid_equal (obj1->ptid, obj2->ptid) + && obj1->element_type == obj2->element_type + && obj1->first == obj2->first + && obj1->last == obj2->last + && obj1->step == obj2->step) + Py_RETURN_TRUE; + else + Py_RETURN_FALSE; + + case Py_NE: + if (!ptid_equal (obj1->ptid, obj2->ptid) + || obj1->element_type != obj2->element_type + || obj1->first != obj2->first + || obj1->last != obj2->last + || obj1->step != obj2->step) + Py_RETURN_TRUE; + else + Py_RETURN_FALSE; + + default: + break; + } + + Py_INCREF (Py_NotImplemented); + return Py_NotImplemented; +} + +/* Implementation of + BtraceRecord.replay_position [BtraceInstruction]. */ + +static PyObject * +recpy_bt_replay_position (PyObject* self, void* closure) +{ + const struct thread_info * const tinfo = find_thread_ptid (inferior_ptid); + + if (tinfo == NULL) + Py_RETURN_NONE; + + if (tinfo->btrace.replay == NULL) + Py_RETURN_NONE; + + return btpy_insn_new (inferior_ptid, + btrace_insn_number (tinfo->btrace.replay)); +} + +/* Implementation of + BtraceRecord.begin [BtraceInstruction]. */ + +static PyObject * +recpy_bt_begin (PyObject* self, void* closure) +{ + struct thread_info * const tinfo = find_thread_ptid (inferior_ptid); + struct btrace_insn_iterator iterator; + + if (tinfo == NULL) + Py_RETURN_NONE; + + btrace_fetch (tinfo); + + if (btrace_is_empty (tinfo)) + Py_RETURN_NONE; + + btrace_insn_begin (&iterator, &tinfo->btrace); + return btpy_insn_new (inferior_ptid, btrace_insn_number (&iterator)); +} + +/* Implementation of + BtraceRecord.end [BtraceInstruction]. */ + +static PyObject * +recpy_bt_end (PyObject* self, void* closure) +{ + struct thread_info * const tinfo = find_thread_ptid (inferior_ptid); + struct btrace_insn_iterator iterator; + + if (tinfo == NULL) + Py_RETURN_NONE; + + btrace_fetch (tinfo); + + if (btrace_is_empty (tinfo)) + Py_RETURN_NONE; + + btrace_insn_end (&iterator, &tinfo->btrace); + return btpy_insn_new (inferior_ptid, btrace_insn_number (&iterator)); +} + +/* Implementation of + BtraceRecord.instruction_history [list]. */ + +static PyObject * +recpy_bt_instruction_history (PyObject* self, void* closure) +{ + struct thread_info * const tinfo = find_thread_ptid (inferior_ptid); + struct btrace_insn_iterator iterator; + unsigned long first = 0; + unsigned long last = 0; + + if (tinfo == NULL) + Py_RETURN_NONE; + + btrace_fetch (tinfo); + + if (btrace_is_empty (tinfo)) + Py_RETURN_NONE; + + btrace_insn_begin (&iterator, &tinfo->btrace); + first = btrace_insn_number (&iterator); + + btrace_insn_end (&iterator, &tinfo->btrace); + last = btrace_insn_number (&iterator); + + return btpy_list_new (inferior_ptid, first, last, 1, &btpy_insn_type); +} + +/* Implementation of + BtraceRecord.function_call_history [list]. */ + +static PyObject * +recpy_bt_function_call_history (PyObject* self, void* closure) +{ + struct thread_info * const tinfo = find_thread_ptid (inferior_ptid); + struct btrace_call_iterator iterator; + unsigned long first = 0; + unsigned long last = 0; + + if (tinfo == NULL) + Py_RETURN_NONE; + + btrace_fetch (tinfo); + + if (btrace_is_empty (tinfo)) + Py_RETURN_NONE; + + btrace_call_begin (&iterator, &tinfo->btrace); + first = btrace_call_number (&iterator); + + btrace_call_end (&iterator, &tinfo->btrace); + last = btrace_call_number (&iterator); + + return btpy_list_new (inferior_ptid, first, last, 1, &btpy_call_type); +} + +/* Implementation of BtraceRecord.goto (self, BtraceInstruction) -> None. */ + +static PyObject * +recpy_bt_goto_position (PyObject* self, PyObject* args) +{ + struct thread_info * const tinfo = find_thread_ptid (inferior_ptid); + char *result = NULL; + const btpy_object *obj; + + if (tinfo == NULL || btrace_is_empty (tinfo)) + return PyErr_Format (gdbpy_gdb_error, _("Empty branch trace.")); + + if (!PyArg_ParseTuple (args, "O", &obj)) + return NULL; + + if (Py_TYPE (obj) != &btpy_insn_type) + return PyErr_Format (PyExc_TypeError, _("Argument must be instruction.")); + + TRY + { + struct btrace_insn_iterator iter; + char buffer[256] = { '\0' }; + + btrace_insn_end (&iter, &tinfo->btrace); + + if (btrace_insn_number (&iter) == obj->number) + result = execute_command_to_string ("record goto end", 0); + else + { + snprintf (buffer, sizeof (buffer), "record goto %zi", obj->number); + result = execute_command_to_string (buffer, 0); + } + } + CATCH (except, RETURN_MASK_ALL) + { + GDB_PY_HANDLE_EXCEPTION (except); + } + END_CATCH + + xfree (result); + Py_RETURN_NONE; +} + +/* See py-btrace.h. */ + +void +recpy_btrace_python_interface (struct record_python_interface *iface) +{ + iface->begin = recpy_bt_begin; + iface->end = recpy_bt_end; + iface->function_call_history = recpy_bt_function_call_history; + iface->instruction_history = recpy_bt_instruction_history; + iface->goto_position = recpy_bt_goto_position; + iface->replay_position = recpy_bt_replay_position; +} + +/* BtraceInstruction members. */ + +struct PyGetSetDef btpy_insn_getset[] = { + { "number", btpy_number, NULL, "instruction number", NULL}, + { "error", btpy_insn_error, NULL, "error number for gaps", NULL}, + { "symbol", btpy_insn_symbol, NULL, "associated symbol", NULL}, + { "pc", btpy_insn_pc, NULL, "instruction address", NULL}, + { "data", btpy_insn_data, NULL, "raw instruction data", NULL}, + { "decoded", btpy_insn_decode, NULL, "decoded instruction", NULL}, + { "size", btpy_insn_size, NULL, "instruction size in byte", NULL}, + { "is_speculative", btpy_insn_is_speculative, NULL, "if the instruction was \ +executed speculatively", NULL}, + {NULL} +}; + +/* BtraceFunctionCall members. */ + +static PyGetSetDef btpy_call_getset[] = { + { "number", btpy_number, NULL, "function call number", NULL}, + { "level", btpy_call_level, NULL, "call stack level", NULL}, + { "symbol", btpy_call_symbol, NULL, "associated line and symbol", NULL}, + { "instructions", btpy_call_instructions, NULL, "list of instructions in \ +this function call", NULL}, + { "up", btpy_call_up, NULL, "caller or returned-to function segment", NULL}, + { "prev_sibling", btpy_call_prev_sibling, NULL, "previous segment of this \ +function", NULL}, + { "next_sibling", btpy_call_next_sibling, NULL, "next segment of this \ +function", NULL}, + {NULL} +}; + +/* BtraceList methods. */ + +struct PyMethodDef btpy_list_methods[] = { + { "count", btpy_list_count, METH_O, "count number of occurences"}, + { "index", btpy_list_index, METH_O, "index of entry"}, + {NULL} +}; + +/* BtraceList sequence methods. */ + +static PySequenceMethods btpy_list_sequence_methods = { + NULL +}; + +/* BtraceList mapping methods. Necessary for slicing. */ + +static PyMappingMethods btpy_list_mapping_methods = { + NULL +}; + +/* Sets up the btrace record API. */ + +int +gdbpy_initialize_btrace (void) +{ + btpy_insn_type.tp_new = PyType_GenericNew; + btpy_insn_type.tp_flags = Py_TPFLAGS_DEFAULT; + btpy_insn_type.tp_basicsize = sizeof (btpy_object); + btpy_insn_type.tp_name = "gdb.BtraceInstruction"; + btpy_insn_type.tp_doc = "GDB btrace instruction object"; + btpy_insn_type.tp_getset = btpy_insn_getset; + btpy_insn_type.tp_richcompare = btpy_richcompare; + btpy_insn_type.tp_hash = btpy_hash; + + btpy_call_type.tp_new = PyType_GenericNew; + btpy_call_type.tp_flags = Py_TPFLAGS_DEFAULT; + btpy_call_type.tp_basicsize = sizeof (btpy_object); + btpy_call_type.tp_name = "gdb.BtraceFunctionCall"; + btpy_call_type.tp_doc = "GDB btrace call object"; + btpy_call_type.tp_getset = btpy_call_getset; + btpy_call_type.tp_richcompare = btpy_richcompare; + btpy_call_type.tp_hash = btpy_hash; + + btpy_list_type.tp_new = PyType_GenericNew; + btpy_list_type.tp_flags = Py_TPFLAGS_DEFAULT; + btpy_list_type.tp_basicsize = sizeof (btpy_list_object); + btpy_list_type.tp_name = "gdb.BtraceInstructionList"; + btpy_list_type.tp_doc = "GDB instruction list object"; + btpy_list_type.tp_methods = btpy_list_methods; + btpy_list_type.tp_as_sequence = &btpy_list_sequence_methods; + btpy_list_type.tp_as_mapping = &btpy_list_mapping_methods; + btpy_list_type.tp_richcompare = btpy_list_richcompare; + + btpy_list_sequence_methods.sq_item = btpy_list_item; + btpy_list_sequence_methods.sq_length = btpy_list_length; + btpy_list_sequence_methods.sq_contains = btpy_list_contains; + + btpy_list_mapping_methods.mp_subscript = btpy_list_slice; + + if (PyType_Ready (&btpy_insn_type) < 0 + || PyType_Ready (&btpy_call_type) < 0 + || PyType_Ready (&btpy_list_type) < 0) + return -1; + else + return 0; +} diff --git a/gdb/python/py-btrace.h b/gdb/python/py-btrace.h new file mode 100644 index 0000000..70e30a2 --- /dev/null +++ b/gdb/python/py-btrace.h @@ -0,0 +1,32 @@ +/* Python interface to btrace record targets. + + Copyright 2016 Free Software Foundation, Inc. + + Contributed by Intel Corp. + + This file is part of GDB. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . */ + +#ifndef GDB_PY_BTRACE_H +#define GDB_PY_BTRACE_H + +struct record_python_interface; + +/* Fill in the record btrace python interface object and return non-zero. + Return zero on failure or if no recording is active. */ + +extern void recpy_btrace_python_interface (struct record_python_interface *); + +#endif /* GDB_PY_BTRACE_H */ diff --git a/gdb/python/python-internal.h b/gdb/python/python-internal.h index 3828b4c..ffbb3dc 100644 --- a/gdb/python/python-internal.h +++ b/gdb/python/python-internal.h @@ -432,6 +432,8 @@ int gdbpy_initialize_values (void) CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION; int gdbpy_initialize_frames (void) CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION; +int gdbpy_initialize_btrace (void) + CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION; int gdbpy_initialize_record (void) CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION; int gdbpy_initialize_symtabs (void) diff --git a/gdb/python/python.c b/gdb/python/python.c index a80f189..5acd7a7 100644 --- a/gdb/python/python.c +++ b/gdb/python/python.c @@ -1794,6 +1794,7 @@ message == an error message without a stack will be printed."), || gdbpy_initialize_frames () < 0 || gdbpy_initialize_commands () < 0 || gdbpy_initialize_record () < 0 + || gdbpy_initialize_btrace () < 0 || gdbpy_initialize_symbols () < 0 || gdbpy_initialize_symtabs () < 0 || gdbpy_initialize_blocks () < 0 diff --git a/gdb/record-btrace.c b/gdb/record-btrace.c index 0576123..129a2ff 100644 --- a/gdb/record-btrace.c +++ b/gdb/record-btrace.c @@ -41,6 +41,11 @@ #include "vec.h" #include +#if HAVE_PYTHON +#include "python/py-record.h" +#include "python/py-btrace.h" +#endif + /* The target_ops of record-btrace. */ static struct target_ops record_btrace_ops; @@ -2783,6 +2788,38 @@ record_btrace_stop_replaying_all (struct target_ops *self) record_btrace_stop_replaying (tp); } +/* The to_record_python_interface method of target record-btrace. */ + +static int +record_btrace_python_interface (struct target_ops *self, + struct record_python_interface *iface) +{ +#if HAVE_PYTHON + struct thread_info *tp; + const struct btrace_config *conf; + int err; + + gdb_assert (iface != NULL); + + tp = find_thread_ptid (inferior_ptid); + if (tp == NULL) + return 0; + + btrace_fetch (tp); + + conf = btrace_conf (&tp->btrace); + + recpy_btrace_python_interface (iface); + + iface->format = btrace_format_short_string (conf->format); + iface->method = "btrace"; + + return 1; +#else + return 0; +#endif +} + /* The to_execution_direction target method. */ static enum exec_direction_kind @@ -2836,6 +2873,7 @@ init_record_btrace_ops (void) ops->to_record_is_replaying = record_btrace_is_replaying; ops->to_record_will_replay = record_btrace_will_replay; ops->to_record_stop_replaying = record_btrace_stop_replaying_all; + ops->to_record_python_interface = record_btrace_python_interface; ops->to_xfer_partial = record_btrace_xfer_partial; ops->to_remove_breakpoint = record_btrace_remove_breakpoint; ops->to_insert_breakpoint = record_btrace_insert_breakpoint; diff --git a/gdb/record-full.c b/gdb/record-full.c index 50f235d..cbd1103 100644 --- a/gdb/record-full.c +++ b/gdb/record-full.c @@ -38,6 +38,10 @@ #include +#if HAVE_PYTHON +#include "python/py-record.h" +#endif + /* This module implements "target record-full", also known as "process record and replay". This target sits on top of a "normal" target (a target that "has execution"), and provides a record and replay @@ -1974,6 +1978,21 @@ record_full_stop_replaying (struct target_ops *self) record_full_goto_end (self); } +/* The "to_record_python_interface" target method. */ + +static int +record_full_python_interface (struct target_ops *self, + struct record_python_interface *iface) +{ +#if HAVE_PYTHON + iface->method = "full"; + iface->format = "full"; + return 1; +#else + return 0; +#endif +} + static void init_record_full_ops (void) { @@ -2017,6 +2036,7 @@ init_record_full_ops (void) record_full_ops.to_record_is_replaying = record_full_is_replaying; record_full_ops.to_record_will_replay = record_full_will_replay; record_full_ops.to_record_stop_replaying = record_full_stop_replaying; + record_full_ops.to_record_python_interface = record_full_python_interface; record_full_ops.to_goto_record_begin = record_full_goto_begin; record_full_ops.to_goto_record_end = record_full_goto_end; record_full_ops.to_goto_record = record_full_goto; -- 2.7.4