[Lldb-commits] [lldb] r356416 - A target definition file that may work for
Jason Molenda via lldb-commits
lldb-commits at lists.llvm.org
Mon Mar 18 14:39:55 PDT 2019
Author: jmolenda
Date: Mon Mar 18 14:39:54 2019
New Revision: 356416
URL: http://llvm.org/viewvc/llvm-project?rev=356416&view=rev
Log:
A target definition file that may work for
Aarch32 Cortex-M target processor debugging.
<rdar://problem/48448564>
Added:
lldb/trunk/examples/python/armv7_cortex_m_target_defintion.py (with props)
Added: lldb/trunk/examples/python/armv7_cortex_m_target_defintion.py
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/examples/python/armv7_cortex_m_target_defintion.py?rev=356416&view=auto
==============================================================================
--- lldb/trunk/examples/python/armv7_cortex_m_target_defintion.py (added)
+++ lldb/trunk/examples/python/armv7_cortex_m_target_defintion.py Mon Mar 18 14:39:54 2019
@@ -0,0 +1,140 @@
+#!/usr/bin/python
+#===-- armv7_cortex_m_target_definition.py.py ------------------*- C++ -*-===//
+#
+# The LLVM Compiler Infrastructure
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===//
+
+#----------------------------------------------------------------------
+# DESCRIPTION
+#
+# This file can be used with the following setting:
+# plugin.process.gdb-remote.target-definition-file
+# This setting should be used when you are trying to connect to a
+# remote GDB server that doesn't support any of the register discovery
+# packets that LLDB normally uses.
+#
+# Why is this necessary? LLDB doesn't require a new build of LLDB that
+# targets each new architecture you will debug with. Instead, all
+# architectures are supported and LLDB relies on extra GDB server
+# packets to discover the target we are connecting to so that is can
+# show the right registers for each target. This allows the GDB server
+# to change and add new registers without requiring a new LLDB build
+# just so we can see new registers.
+#
+# This file implements the x86_64 registers for the darwin version of
+# GDB and allows you to connect to servers that use this register set.
+#
+# USAGE
+#
+# (lldb) settings set plugin.process.gdb-remote.target-definition-file /path/to/armv7_cortex_m_target_defintion.py
+# (lldb) gdb-remote other.baz.com:1234
+#
+# The target definition file will get used if and only if the
+# qRegisterInfo packets are not supported when connecting to a remote
+# GDB server.
+#----------------------------------------------------------------------
+
+from lldb import *
+
+# DWARF register numbers
+name_to_dwarf_regnum = {
+ 'r0' : 0 ,
+ 'r1' : 1 ,
+ 'r2' : 2 ,
+ 'r3' : 3 ,
+ 'r4' : 4 ,
+ 'r5' : 5 ,
+ 'r6' : 6 ,
+ 'r7' : 7 ,
+ 'r9' : 8 ,
+ 'r10' : 9 ,
+ 'r11' : 10,
+ 'r12' : 11,
+ 'sp' : 12,
+ 'lr' : 13,
+ 'pc' : 14,
+ 'r15' : 15,
+ 'xpsr' : 16,
+};
+
+name_to_generic_regnum = {
+ 'pc' : LLDB_REGNUM_GENERIC_PC,
+ 'sp' : LLDB_REGNUM_GENERIC_SP,
+ 'r7' : LLDB_REGNUM_GENERIC_FP,
+ 'lr' : LLDB_REGNUM_GENERIC_RA,
+ 'r0' : LLDB_REGNUM_GENERIC_ARG1,
+ 'r1' : LLDB_REGNUM_GENERIC_ARG2,
+ 'r2' : LLDB_REGNUM_GENERIC_ARG3,
+ 'r3' : LLDB_REGNUM_GENERIC_ARG4
+};
+
+
+def get_reg_num (reg_num_dict, reg_name):
+ if reg_name in reg_num_dict:
+ return reg_num_dict[reg_name]
+ return LLDB_INVALID_REGNUM
+
+def get_reg_num (reg_num_dict, reg_name):
+ if reg_name in reg_num_dict:
+ return reg_num_dict[reg_name]
+ return LLDB_INVALID_REGNUM
+
+armv7_register_infos = [
+{ 'name':'r0' , 'set':0, 'bitsize':32 , 'encoding':eEncodingUint , 'format':eFormatAddressInfo, 'alt-name':'arg1' },
+{ 'name':'r1' , 'set':0, 'bitsize':32 , 'encoding':eEncodingUint , 'format':eFormatAddressInfo, 'alt-name':'arg2' },
+{ 'name':'r2' , 'set':0, 'bitsize':32 , 'encoding':eEncodingUint , 'format':eFormatAddressInfo, 'alt-name':'arg3' },
+{ 'name':'r3' , 'set':0, 'bitsize':32 , 'encoding':eEncodingUint , 'format':eFormatAddressInfo, 'alt-name':'arg4' },
+{ 'name':'r4' , 'set':0, 'bitsize':32 , 'encoding':eEncodingUint , 'format':eFormatAddressInfo },
+{ 'name':'r5' , 'set':0, 'bitsize':32 , 'encoding':eEncodingUint , 'format':eFormatAddressInfo },
+{ 'name':'r6' , 'set':0, 'bitsize':32 , 'encoding':eEncodingUint , 'format':eFormatAddressInfo },
+{ 'name':'r7' , 'set':0, 'bitsize':32 , 'encoding':eEncodingUint , 'format':eFormatAddressInfo, 'alt-name':'fp' },
+{ 'name':'r8' , 'set':0, 'bitsize':32 , 'encoding':eEncodingUint , 'format':eFormatAddressInfo },
+{ 'name':'r9' , 'set':0, 'bitsize':32 , 'encoding':eEncodingUint , 'format':eFormatAddressInfo },
+{ 'name':'r10' , 'set':0, 'bitsize':32 , 'encoding':eEncodingUint , 'format':eFormatAddressInfo },
+{ 'name':'r11' , 'set':0, 'bitsize':32 , 'encoding':eEncodingUint , 'format':eFormatAddressInfo },
+{ 'name':'r12' , 'set':0, 'bitsize':32 , 'encoding':eEncodingUint , 'format':eFormatAddressInfo },
+{ 'name':'sp' , 'set':0, 'bitsize':32 , 'encoding':eEncodingUint , 'format':eFormatAddressInfo, 'alt-name':'r13' },
+{ 'name':'lr' , 'set':0, 'bitsize':32 , 'encoding':eEncodingUint , 'format':eFormatAddressInfo, 'alt-name':'r14' },
+{ 'name':'pc' , 'set':0, 'bitsize':32 , 'encoding':eEncodingUint , 'format':eFormatAddressInfo, 'alt-name':'r15' },
+{ 'name':'xpsr' , 'set':0, 'bitsize':32 , 'encoding':eEncodingUint , 'format':eFormatAddressInfo, 'alt-name':'cpsr' },
+];
+
+g_target_definition = None
+
+def get_target_definition ():
+ global g_target_definition
+ if g_target_definition == None:
+ g_target_definition = {}
+ offset = 0
+ for reg_info in armv7_register_infos:
+ reg_name = reg_info['name']
+
+ if 'slice' not in reg_info and 'composite' not in reg_info:
+ reg_info['offset'] = offset
+ offset += reg_info['bitsize'] / 8
+
+ # Set the DWARF/eh_frame register number for this register if it has one
+ reg_num = get_reg_num(name_to_dwarf_regnum, reg_name)
+ if reg_num != LLDB_INVALID_REGNUM:
+ reg_info['gcc'] = reg_num
+ reg_info['ehframe'] = reg_num
+
+ # Set the generic register number for this register if it has one
+ reg_num = get_reg_num(name_to_generic_regnum, reg_name)
+ if reg_num != LLDB_INVALID_REGNUM:
+ reg_info['generic'] = reg_num
+
+ g_target_definition['sets'] = ['General Purpose Registers']
+ g_target_definition['registers'] = armv7_register_infos
+ g_target_definition['host-info'] = { 'triple' : 'armv7em--', 'endian': eByteOrderLittle }
+ g_target_definition['g-packet-size'] = offset
+ return g_target_definition
+
+def get_dynamic_setting(target, setting_name):
+ if setting_name == 'gdb-server-target-definition':
+ return get_target_definition()
Propchange: lldb/trunk/examples/python/armv7_cortex_m_target_defintion.py
------------------------------------------------------------------------------
svn:executable = *
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