From 2b87386c7a1c0488bf2a27d7f4ac80aa84e22fb5 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Sun, 30 May 2021 22:23:07 +0300 Subject: perf scripting python: exported-sql-viewer.py: Factor out libxed.py Factor out libxed.py so it can be reused. Signed-off-by: Adrian Hunter Cc: Andi Kleen Cc: Jiri Olsa Link: https://lore.kernel.org/r/20210530192308.7382-13-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/scripts/python/exported-sql-viewer.py | 89 +------------------ tools/perf/scripts/python/libxed.py | 107 +++++++++++++++++++++++ 2 files changed, 108 insertions(+), 88 deletions(-) create mode 100644 tools/perf/scripts/python/libxed.py diff --git a/tools/perf/scripts/python/exported-sql-viewer.py b/tools/perf/scripts/python/exported-sql-viewer.py index 711d4f9f5645..13f2d8a81610 100755 --- a/tools/perf/scripts/python/exported-sql-viewer.py +++ b/tools/perf/scripts/python/exported-sql-viewer.py @@ -113,6 +113,7 @@ import os import random import copy import math +from libxed import LibXED pyside_version_1 = True if not "--pyside-version-1" in sys.argv: @@ -4747,94 +4748,6 @@ class MainWindow(QMainWindow): dialog = AboutDialog(self.glb, self) dialog.exec_() -# XED Disassembler - -class xed_state_t(Structure): - - _fields_ = [ - ("mode", c_int), - ("width", c_int) - ] - -class XEDInstruction(): - - def __init__(self, libxed): - # Current xed_decoded_inst_t structure is 192 bytes. Use 512 to allow for future expansion - xedd_t = c_byte * 512 - self.xedd = xedd_t() - self.xedp = addressof(self.xedd) - libxed.xed_decoded_inst_zero(self.xedp) - self.state = xed_state_t() - self.statep = addressof(self.state) - # Buffer for disassembled instruction text - self.buffer = create_string_buffer(256) - self.bufferp = addressof(self.buffer) - -class LibXED(): - - def __init__(self): - try: - self.libxed = CDLL("libxed.so") - except: - self.libxed = None - if not self.libxed: - self.libxed = CDLL("/usr/local/lib/libxed.so") - - self.xed_tables_init = self.libxed.xed_tables_init - self.xed_tables_init.restype = None - self.xed_tables_init.argtypes = [] - - self.xed_decoded_inst_zero = self.libxed.xed_decoded_inst_zero - self.xed_decoded_inst_zero.restype = None - self.xed_decoded_inst_zero.argtypes = [ c_void_p ] - - self.xed_operand_values_set_mode = self.libxed.xed_operand_values_set_mode - self.xed_operand_values_set_mode.restype = None - self.xed_operand_values_set_mode.argtypes = [ c_void_p, c_void_p ] - - self.xed_decoded_inst_zero_keep_mode = self.libxed.xed_decoded_inst_zero_keep_mode - self.xed_decoded_inst_zero_keep_mode.restype = None - self.xed_decoded_inst_zero_keep_mode.argtypes = [ c_void_p ] - - self.xed_decode = self.libxed.xed_decode - self.xed_decode.restype = c_int - self.xed_decode.argtypes = [ c_void_p, c_void_p, c_uint ] - - self.xed_format_context = self.libxed.xed_format_context - self.xed_format_context.restype = c_uint - self.xed_format_context.argtypes = [ c_int, c_void_p, c_void_p, c_int, c_ulonglong, c_void_p, c_void_p ] - - self.xed_tables_init() - - def Instruction(self): - return XEDInstruction(self) - - def SetMode(self, inst, mode): - if mode: - inst.state.mode = 4 # 32-bit - inst.state.width = 4 # 4 bytes - else: - inst.state.mode = 1 # 64-bit - inst.state.width = 8 # 8 bytes - self.xed_operand_values_set_mode(inst.xedp, inst.statep) - - def DisassembleOne(self, inst, bytes_ptr, bytes_cnt, ip): - self.xed_decoded_inst_zero_keep_mode(inst.xedp) - err = self.xed_decode(inst.xedp, bytes_ptr, bytes_cnt) - if err: - return 0, "" - # Use AT&T mode (2), alternative is Intel (3) - ok = self.xed_format_context(2, inst.xedp, inst.bufferp, sizeof(inst.buffer), ip, 0, 0) - if not ok: - return 0, "" - if sys.version_info[0] == 2: - result = inst.buffer.value - else: - result = inst.buffer.value.decode() - # Return instruction length and the disassembled instruction text - # For now, assume the length is in byte 166 - return inst.xedd[166], result - def TryOpen(file_name): try: return open(file_name, "rb") diff --git a/tools/perf/scripts/python/libxed.py b/tools/perf/scripts/python/libxed.py new file mode 100644 index 000000000000..2c70a5a7eb9c --- /dev/null +++ b/tools/perf/scripts/python/libxed.py @@ -0,0 +1,107 @@ +#!/usr/bin/env python +# SPDX-License-Identifier: GPL-2.0 +# libxed.py: Python wrapper for libxed.so +# Copyright (c) 2014-2021, Intel Corporation. + +# To use Intel XED, libxed.so must be present. To build and install +# libxed.so: +# git clone https://github.com/intelxed/mbuild.git mbuild +# git clone https://github.com/intelxed/xed +# cd xed +# ./mfile.py --share +# sudo ./mfile.py --prefix=/usr/local install +# sudo ldconfig +# + +import sys + +from ctypes import CDLL, Structure, create_string_buffer, addressof, sizeof, \ + c_void_p, c_bool, c_byte, c_char, c_int, c_uint, c_longlong, c_ulonglong + +# XED Disassembler + +class xed_state_t(Structure): + + _fields_ = [ + ("mode", c_int), + ("width", c_int) + ] + +class XEDInstruction(): + + def __init__(self, libxed): + # Current xed_decoded_inst_t structure is 192 bytes. Use 512 to allow for future expansion + xedd_t = c_byte * 512 + self.xedd = xedd_t() + self.xedp = addressof(self.xedd) + libxed.xed_decoded_inst_zero(self.xedp) + self.state = xed_state_t() + self.statep = addressof(self.state) + # Buffer for disassembled instruction text + self.buffer = create_string_buffer(256) + self.bufferp = addressof(self.buffer) + +class LibXED(): + + def __init__(self): + try: + self.libxed = CDLL("libxed.so") + except: + self.libxed = None + if not self.libxed: + self.libxed = CDLL("/usr/local/lib/libxed.so") + + self.xed_tables_init = self.libxed.xed_tables_init + self.xed_tables_init.restype = None + self.xed_tables_init.argtypes = [] + + self.xed_decoded_inst_zero = self.libxed.xed_decoded_inst_zero + self.xed_decoded_inst_zero.restype = None + self.xed_decoded_inst_zero.argtypes = [ c_void_p ] + + self.xed_operand_values_set_mode = self.libxed.xed_operand_values_set_mode + self.xed_operand_values_set_mode.restype = None + self.xed_operand_values_set_mode.argtypes = [ c_void_p, c_void_p ] + + self.xed_decoded_inst_zero_keep_mode = self.libxed.xed_decoded_inst_zero_keep_mode + self.xed_decoded_inst_zero_keep_mode.restype = None + self.xed_decoded_inst_zero_keep_mode.argtypes = [ c_void_p ] + + self.xed_decode = self.libxed.xed_decode + self.xed_decode.restype = c_int + self.xed_decode.argtypes = [ c_void_p, c_void_p, c_uint ] + + self.xed_format_context = self.libxed.xed_format_context + self.xed_format_context.restype = c_uint + self.xed_format_context.argtypes = [ c_int, c_void_p, c_void_p, c_int, c_ulonglong, c_void_p, c_void_p ] + + self.xed_tables_init() + + def Instruction(self): + return XEDInstruction(self) + + def SetMode(self, inst, mode): + if mode: + inst.state.mode = 4 # 32-bit + inst.state.width = 4 # 4 bytes + else: + inst.state.mode = 1 # 64-bit + inst.state.width = 8 # 8 bytes + self.xed_operand_values_set_mode(inst.xedp, inst.statep) + + def DisassembleOne(self, inst, bytes_ptr, bytes_cnt, ip): + self.xed_decoded_inst_zero_keep_mode(inst.xedp) + err = self.xed_decode(inst.xedp, bytes_ptr, bytes_cnt) + if err: + return 0, "" + # Use AT&T mode (2), alternative is Intel (3) + ok = self.xed_format_context(2, inst.xedp, inst.bufferp, sizeof(inst.buffer), ip, 0, 0) + if not ok: + return 0, "" + if sys.version_info[0] == 2: + result = inst.buffer.value + else: + result = inst.buffer.value.decode() + # Return instruction length and the disassembled instruction text + # For now, assume the length is in byte 166 + return inst.xedd[166], result -- cgit v1.2.3-59-g8ed1b