Re: [edk2-devel] [PATCH v1 1/1] ArmPlatformPkg/Scripts: Create add-symbol-file commands from UEFI console

["Artem Kopotev" <Artem.Kopotev@arm.com>]

Hello,

This is the second email, which originally didn't have CC to maintainers.

Best regards, Artem.

-----Original Message-----
From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Artem Kopotev via groups.io
Sent: 15 June 2021 16:11
To: devel@edk2.groups.io
Subject: [edk2-devel] [PATCH v1 1/1] ArmPlatformPkg/Scripts: Create add-symbol-file commands from UEFI console

cmd_load_symbols.py can only load symbols from FV. Add the possibility to use UEFI console output to calculate dll load address and send add-symbol-file commands directly to ArmDS debugger

dll load address can't be used directly from UEFI output, see comment in
DebugPeCoffExtraActionLib: "This may not work correctly if you generate PE/COFF directly as then the Offset would not be required".

1) Use objdump -S module.dll | grep <_ModuleEntryPoint> to get offset in dll (offset)
2) Use Entrypoint=<address> from UEFI console output (entrypoint)
3) dll load address is (entrypoint)-(offset)

Signed-off-by: Artem Kopotev <artem.kopotev@arm.com>
Change-Id: I3ac5ea761254a346bbb5806fb089b0979419bc01
---
 ArmPlatformPkg/Scripts/Ds5/cmd_load_symbols.py | 17 ++++-
 ArmPlatformPkg/Scripts/Ds5/console_loader.py   | 68 ++++++++++++++++++++
 2 files changed, 83 insertions(+), 2 deletions(-)

diff --git a/ArmPlatformPkg/Scripts/Ds5/cmd_load_symbols.py b/ArmPlatformPkg/Scripts/Ds5/cmd_load_symbols.py
index de4332edc7d4..89d2f28ba27d 100644
--- a/ArmPlatformPkg/Scripts/Ds5/cmd_load_symbols.py
+++ b/ArmPlatformPkg/Scripts/Ds5/cmd_load_symbols.py
@@ -1,5 +1,5 @@
 #
-#  Copyright (c) 2011-2013, ARM Limited. All rights reserved.
+#  Copyright (c) 2011-2021, Arm Limited. All rights reserved.
 #
 #  SPDX-License-Identifier: BSD-2-Clause-Patent  # @@ -7,6 +7,8 @@  from arm_ds.debugger_v1 import Debugger  from arm_ds.debugger_v1 import DebugException

+from console_loader import load_symbol_from_console
+
 import re, sys, getopt

 import edk2_debugger
@@ -21,12 +23,16 @@ def usage():
     print "-m,--sysmem=(base,size): System Memory region"
     print "-f,--fv=(base,size): Firmware region"
     print "-r,--rom=(base,size): ROM region"
+    print "-i,--input=: Filename for the EDK2 console output"
+    print "-o,--objdump=: Path to the objdump tool"

 verbose = False
 load_all = False
 report_file = None
+input_file = None
+objdump = None
 regions = []
-opts,args = getopt.getopt(sys.argv[1:], "hvar:vm:vr:vf:v", ["help","verbose","all","report=","sysmem=","rom=","fv="])
+opts,args = getopt.getopt(sys.argv[1:], "hvar:i:o:vm:vr:vf:v",
+["help","verbose","all","report=","sysmem=","rom=","fv=","input=","objd
+ump="])
 if (opts is None) or (not opts):
     report_file = '../../../report.log'
 else:
@@ -55,6 +61,10 @@ else:
         elif o in ("-r","--rom"):
             region_type = edk2_debugger.ArmPlatformDebugger.REGION_TYPE_ROM
             regex = region_reg
+        elif o in ("-i","--input"):
+            input_file = a
+        elif o in ("-o", "--objdump"):
+            objdump = a
         else:
             assert False, "Unhandled option (%s)" % o

@@ -94,3 +104,6 @@ except Exception, (ErrorClass, ErrorMessage):
     print "Error(%s): %s" % (ErrorClass, ErrorMessage)  except DebugException, de:
     print "DebugError: %s" % (de.getMessage())
+
+if input_file:
+    load_symbol_from_console(ec, input_file, objdump, verbose)
diff --git a/ArmPlatformPkg/Scripts/Ds5/console_loader.py b/ArmPlatformPkg/Scripts/Ds5/console_loader.py
new file mode 100644
index 000000000000..0ce217876d95
--- /dev/null
+++ b/ArmPlatformPkg/Scripts/Ds5/console_loader.py
@@ -0,0 +1,68 @@
+#
+#  Copyright (c) 2021, Arm Limited. All rights reserved.
+#
+#  SPDX-License-Identifier: BSD-2-Clause-Patent #
+
+from arm_ds.debugger_v1 import DebugException
+
+import subprocess, os, edk2_debugger, re
+
+def get_module_name(line):
+    path = line.rsplit(' ')[1]
+    return os.path.splitext(os.path.basename(path))[0]
+
+def get_module_path(line):
+    return line.rsplit(' ')[1]
+
+def get_module_entrypoint(list, module_name):
+    line = [i for i in list if module_name in i and re.search(r'\b'+module_name+r'\b', i)]
+    if len(line) == 0:
+        # Module was not loaded using DxeDispatcher or PeiDispatcher. It is a SEC module
+        # Symbols for these modules are loaded from FV, not from console log
+        return None
+
+    entrypoint_str =  line[0].rsplit(' ')[4]
+    return entrypoint_str.rsplit('=')[1]
+
+def load_symbol_from_console(ec, console_file, objdump, verbose):
+    if objdump is None:
+        print "Error: A path to objdump tool is not specified, but -i parameter is provided"
+    elif not os.path.exists(objdump):
+        print "Error: Provided path to objdump is invalid: %s" % objdump
+    elif not os.path.exists(console_file):
+        print "Error: UEFI console file is not found: %s" % console_file
+    else:
+
+        full_list = open(console_file).read().splitlines()
+
+        efi_list = [i for i in full_list if "EntryPoint=" in i]
+
+        full_list = dict.fromkeys(full_list)
+        full_list = [i for i in full_list if "add-symbol-file" in i]
+
+        module_dict = {}
+
+        for line in full_list:
+            name = get_module_name(line)
+            module_dict[name] = (get_module_path(line),
+ get_module_entrypoint(efi_list, name))
+
+        for module in module_dict:
+            entrypoint_addr = module_dict[module][1]
+
+            if entrypoint_addr is not None:
+                path = module_dict[module][0]
+                if not os.path.exists(path):
+                    print "Module not found: " + path + ". Skipping..."
+                    continue
+
+                sp = subprocess.Popen([objdump,'-S', path], stdout =
+ subprocess.PIPE)
+
+                objdump_out = sp.stdout.readlines()
+                entrypoint_record = [i for i in objdump_out if
+ "<_ModuleEntryPoint>" in i]
+
+                entrypoint_offset = entrypoint_record[0].split(' ')[0]
+
+                load_addr = int(entrypoint_addr, 16) -
+ int(entrypoint_offset, 16)
+
+                edk2_debugger.load_symbol_from_file(ec, path,
+ load_addr, verbose)
--
2.17.1






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