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 <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: https://lore.kernel.org/r/20210530192308.7382-13-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

2 files changed, 108 insertions, 88 deletions

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