1119 lines
42 KiB
Python
Executable file
1119 lines
42 KiB
Python
Executable file
#!/usr/bin/env python
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#
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# ESP32 core dump Utility
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import sys
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import os
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import argparse
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import subprocess
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import tempfile
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import struct
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import array
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import errno
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import base64
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idf_path = os.getenv('IDF_PATH')
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if idf_path:
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sys.path.insert(0, os.path.join(idf_path, 'components', 'esptool_py', 'esptool'))
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try:
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import esptool
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except ImportError:
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print "Esptool is not found! Set proper $IDF_PATH in environment."
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sys.exit(2)
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__version__ = "0.1-dev"
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if os.name == 'nt':
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CLOSE_FDS = False
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else:
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CLOSE_FDS = True
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class ESPCoreDumpError(RuntimeError):
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"""Core dump runtime error class
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"""
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def __init__(self, message):
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"""Constructor for core dump error
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"""
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super(ESPCoreDumpError, self).__init__(message)
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class BinStruct(object):
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"""Binary structure representation
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Subclasses must specify actual structure layout using 'fields' and 'format' members.
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For example, the following subclass represents structure with two fields:
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f1 of size 2 bytes and 4 bytes f2. Little endian.
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class SomeStruct(BinStruct):
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fields = ("f1",
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"f2")
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format = "<HL"
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Then subclass can be used to initialize fields of underlaying structure and convert it to binary representation:
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f = open('some_struct.bin', 'wb')
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s = SomeStruct()
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s.f1 = 1
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s.f2 = 10
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f.write(s.dump())
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f.close()
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"""
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def __init__(self, buf=None):
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"""Base constructor for binary structure objects
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"""
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if buf is None:
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buf = b'\0' * self.sizeof()
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fields = struct.unpack(self.__class__.format, buf[:self.sizeof()])
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self.__dict__.update(zip(self.__class__.fields, fields))
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def sizeof(self):
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"""Returns the size of the structure represented by specific subclass
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"""
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return struct.calcsize(self.__class__.format)
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def dump(self):
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"""Returns binary representation of structure
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"""
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keys = self.__class__.fields
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return struct.pack(self.__class__.format, *(self.__dict__[k] for k in keys))
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# def __str__(self):
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# keys = self.__class__.fields
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# return (self.__class__.__name__ + "({" +
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# ", ".join("%s:%r" % (k, self.__dict__[k]) for k in keys) +
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# "})")
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class Elf32FileHeader(BinStruct):
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"""ELF32 file header
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"""
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fields = ("e_ident",
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"e_type",
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"e_machine",
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"e_version",
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"e_entry",
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"e_phoff",
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"e_shoff",
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"e_flags",
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"e_ehsize",
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"e_phentsize",
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"e_phnum",
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"e_shentsize",
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"e_shnum",
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"e_shstrndx")
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format = "<16sHHLLLLLHHHHHH"
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def __init__(self, buf=None):
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"""Constructor for ELF32 file header structure
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"""
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super(Elf32FileHeader, self).__init__(buf)
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if buf is None:
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# Fill in sane ELF header for LSB32
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self.e_ident = "\x7fELF\1\1\1\0\0\0\0\0\0\0\0\0"
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self.e_version = ESPCoreDumpElfFile.EV_CURRENT
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self.e_ehsize = self.sizeof()
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class Elf32ProgramHeader(BinStruct):
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"""ELF32 program header
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"""
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fields = ("p_type",
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"p_offset",
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"p_vaddr",
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"p_paddr",
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"p_filesz",
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"p_memsz",
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"p_flags",
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"p_align")
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format = "<LLLLLLLL"
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class Elf32NoteDesc(object):
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"""ELF32 note descriptor
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"""
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def __init__(self, name, type, desc):
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"""Constructor for ELF32 note descriptor
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"""
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self.name = bytearray(name, encoding='ascii') + b'\0'
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self.type = type
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self.desc = desc
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def dump(self):
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"""Returns binary representation of ELF32 note descriptor
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"""
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hdr = struct.pack("<LLL", len(self.name), len(self.desc), self.type)
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# pad for 4 byte alignment
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name = self.name + ((4 - len(self.name)) % 4) * b'\0'
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desc = self.desc + ((4 - len(self.desc)) % 4) * b'\0'
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return hdr + name + desc
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class XtensaPrStatus(BinStruct):
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"""Xtensa program status structure"""
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fields = ("si_signo", "si_code", "si_errno",
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"pr_cursig",
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"pr_pad0",
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"pr_sigpend",
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"pr_sighold",
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"pr_pid",
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"pr_ppid",
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"pr_pgrp",
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"pr_sid",
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"pr_utime",
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"pr_stime",
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"pr_cutime",
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"pr_cstime")
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format = "<3LHHLLLLLLQQQQ"
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class ESPCoreDumpSegment(esptool.ImageSegment):
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""" Wrapper class for a program segment in core ELF file, has a segment
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type and flags as well as the common properties of an ImageSegment.
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"""
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# segment flags
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PF_X = 0x1 # Execute
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PF_W = 0x2 # Write
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PF_R = 0x4 # Read
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def __init__(self, addr, data, type, flags):
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"""Constructor for program segment
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"""
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super(ESPCoreDumpSegment, self).__init__(addr, data)
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self.flags = flags
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self.type = type
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def __repr__(self):
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"""Returns string representation of program segment
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"""
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return "%s %s %s" % (self.type, self.attr_str(), super(ESPCoreDumpSegment, self).__repr__())
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def attr_str(self):
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"""Returns string representation of program segment attributes
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"""
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str = ''
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if self.flags & self.PF_R:
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str += 'R'
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else:
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str += ' '
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if self.flags & self.PF_W:
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str += 'W'
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else:
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str += ' '
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if self.flags & self.PF_X:
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str += 'X'
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else:
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str += ' '
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return str
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class ESPCoreDumpSection(esptool.ELFSection):
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""" Wrapper class for a section in core ELF file, has a section
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flags as well as the common properties of an esptool.ELFSection.
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"""
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# section flags
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SHF_WRITE = 0x1
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SHF_ALLOC = 0x2
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SHF_EXECINSTR = 0x4
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def __init__(self, name, addr, data, flags):
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"""Constructor for section
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"""
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super(ESPCoreDumpSection, self).__init__(name, addr, data)
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self.flags = flags
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def __repr__(self):
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"""Returns string representation of section
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"""
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return "%s %s" % (super(ESPCoreDumpSection, self).__repr__(), self.attr_str())
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def attr_str(self):
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"""Returns string representation of section attributes
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"""
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str = "R"
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if self.flags & self.SHF_WRITE:
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str += 'W'
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else:
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str += ' '
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if self.flags & self.SHF_EXECINSTR:
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str += 'X'
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else:
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str += ' '
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if self.flags & self.SHF_ALLOC:
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str += 'A'
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else:
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str += ' '
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return str
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class ESPCoreDumpElfFile(esptool.ELFFile):
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""" Wrapper class for core dump ELF file
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"""
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# ELF file type
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ET_NONE = 0x0 # No file type
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ET_REL = 0x1 # Relocatable file
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ET_EXEC = 0x2 # Executable file
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ET_DYN = 0x3 # Shared object file
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ET_CORE = 0x4 # Core file
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# ELF file version
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EV_NONE = 0x0
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EV_CURRENT = 0x1
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# ELF file machine type
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EM_NONE = 0x0
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EM_XTENSA = 0x5E
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# section types
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SEC_TYPE_PROGBITS = 0x01
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SEC_TYPE_STRTAB = 0x03
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# special section index
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SHN_UNDEF = 0x0
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# program segment types
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PT_NULL = 0x0
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PT_LOAD = 0x1
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PT_DYNAMIC = 0x2
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PT_INTERP = 0x3
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PT_NOTE = 0x4
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PT_SHLIB = 0x5
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PT_PHDR = 0x6
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def __init__(self, name=None):
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"""Constructor for core dump ELF file
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"""
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if name:
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super(ESPCoreDumpElfFile, self).__init__(name)
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else:
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self.sections = []
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self.program_segments = []
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self.e_type = self.ET_NONE
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self.e_machine = self.EM_NONE
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def _read_elf_file(self, f):
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"""Reads core dump from ELF file
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"""
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# read the ELF file header
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LEN_FILE_HEADER = 0x34
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try:
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(ident,type,machine,_version,
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self.entrypoint,phoff,shoff,_flags,
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_ehsize, phentsize,phnum,_shentsize,
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shnum,shstrndx) = struct.unpack("<16sHHLLLLLHHHHHH", f.read(LEN_FILE_HEADER))
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except struct.error as e:
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raise ESPCoreDumpError("Failed to read a valid ELF header from %s: %s" % (self.name, e))
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if ident[0] != '\x7f' or ident[1:4] != 'ELF':
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raise ESPCoreDumpError("%s has invalid ELF magic header" % self.name)
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if machine != self.EM_XTENSA:
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raise ESPCoreDumpError("%s does not appear to be an Xtensa ELF file. e_machine=%04x" % (self.name, machine))
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self.e_type = type
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self.e_machine = machine
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if shnum > 0:
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self._read_sections(f, shoff, shstrndx)
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else:
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self.sections = []
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if phnum > 0:
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self._read_program_segments(f, phoff, phentsize, phnum)
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else:
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self.program_segments = []
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def _read_sections(self, f, section_header_offs, shstrndx):
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"""Reads core dump sections from ELF file
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"""
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f.seek(section_header_offs)
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section_header = f.read()
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LEN_SEC_HEADER = 0x28
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if len(section_header) == 0:
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raise ESPCoreDumpError("No section header found at offset %04x in ELF file." % section_header_offs)
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if len(section_header) % LEN_SEC_HEADER != 0:
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print 'WARNING: Unexpected ELF section header length %04x is not mod-%02x' % (len(section_header),LEN_SEC_HEADER)
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# walk through the section header and extract all sections
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section_header_offsets = range(0, len(section_header), LEN_SEC_HEADER)
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def read_section_header(offs):
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name_offs,sec_type,flags,lma,sec_offs,size = struct.unpack_from("<LLLLLL", section_header[offs:])
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return (name_offs, sec_type, flags, lma, size, sec_offs)
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all_sections = [read_section_header(offs) for offs in section_header_offsets]
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prog_sections = [s for s in all_sections if s[1] == esptool.ELFFile.SEC_TYPE_PROGBITS]
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# search for the string table section
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if not shstrndx * LEN_SEC_HEADER in section_header_offsets:
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raise ESPCoreDumpError("ELF file has no STRTAB section at shstrndx %d" % shstrndx)
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_,sec_type,_,_,sec_size,sec_offs = read_section_header(shstrndx * LEN_SEC_HEADER)
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if sec_type != esptool.ELFFile.SEC_TYPE_STRTAB:
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print 'WARNING: ELF file has incorrect STRTAB section type 0x%02x' % sec_type
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f.seek(sec_offs)
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string_table = f.read(sec_size)
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# build the real list of ELFSections by reading the actual section names from the
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# string table section, and actual data for each section from the ELF file itself
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def lookup_string(offs):
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raw = string_table[offs:]
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return raw[:raw.index('\x00')]
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def read_data(offs,size):
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f.seek(offs)
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return f.read(size)
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prog_sections = [ESPCoreDumpSection(lookup_string(n_offs), lma, read_data(offs, size), flags) for (n_offs, _type, flags, lma, size, offs) in prog_sections
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if lma != 0]
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self.sections = prog_sections
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def _read_program_segments(self, f, seg_table_offs, entsz, num):
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"""Reads core dump program segments from ELF file
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"""
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f.seek(seg_table_offs)
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seg_table = f.read(entsz*num)
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LEN_SEG_HEADER = 0x20
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if len(seg_table) == 0:
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raise ESPCoreDumpError("No program header table found at offset %04x in ELF file." % seg_table_offs)
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if len(seg_table) % LEN_SEG_HEADER != 0:
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print 'WARNING: Unexpected ELF program header table length %04x is not mod-%02x' % (len(seg_table),LEN_SEG_HEADER)
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# walk through the program segment table and extract all segments
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seg_table_offs = range(0, len(seg_table), LEN_SEG_HEADER)
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def read_program_header(offs):
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type,offset,vaddr,_paddr,filesz,_memsz,flags,_align = struct.unpack_from("<LLLLLLLL", seg_table[offs:])
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return (type,offset,vaddr,filesz,flags)
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all_segments = [read_program_header(offs) for offs in seg_table_offs]
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prog_segments = [s for s in all_segments if s[0] == self.PT_LOAD]
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# build the real list of ImageSegment by reading actual data for each segment from the ELF file itself
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def read_data(offs,size):
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f.seek(offs)
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return f.read(size)
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prog_segments = [ESPCoreDumpSegment(vaddr, read_data(offset, filesz), type, flags) for (type, offset, vaddr, filesz,flags) in prog_segments
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if vaddr != 0]
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self.program_segments = prog_segments
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def add_program_segment(self, addr, data, type, flags):
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"""Adds new program segment
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"""
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# TODO: currently merging with existing segments is not supported
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data_sz = len(data)
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# check for overlapping and merge if needed
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if addr != 0 and data_sz != 0:
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for ps in self.program_segments:
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seg_len = len(ps.data)
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if addr >= ps.addr and addr < (ps.addr + seg_len):
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raise ESPCoreDumpError("Can not add overlapping region [%x..%x] to ELF file. Conflict with existing [%x..%x]." %
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(addr, addr + data_sz - 1, ps.addr, ps.addr + seg_len - 1))
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if (addr + data_sz) > ps.addr and (addr + data_sz) <= (ps.addr + seg_len):
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raise ESPCoreDumpError("Can not add overlapping region [%x..%x] to ELF file. Conflict with existing [%x..%x]." %
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(addr, addr + data_sz - 1, ps.addr, ps.addr + seg_len - 1))
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# append
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self.program_segments.append(ESPCoreDumpSegment(addr, data, type, flags))
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def dump(self, f):
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"""Write core dump contents to file
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"""
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# TODO: currently dumps only program segments.
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# dumping sections is not supported yet
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# write ELF header
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ehdr = Elf32FileHeader()
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ehdr.e_type = self.e_type
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ehdr.e_machine = self.e_machine
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ehdr.e_entry = 0
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ehdr.e_phoff = ehdr.sizeof()
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ehdr.e_shoff = 0
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ehdr.e_flags = 0
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ehdr.e_phentsize = Elf32ProgramHeader().sizeof()
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ehdr.e_phnum = len(self.program_segments)
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ehdr.e_shentsize = 0
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ehdr.e_shnum = 0
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ehdr.e_shstrndx = self.SHN_UNDEF
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f.write(ehdr.dump())
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# write program header table
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cur_off = ehdr.e_ehsize + ehdr.e_phnum * ehdr.e_phentsize
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for i in range(len(self.program_segments)):
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phdr = Elf32ProgramHeader()
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phdr.p_type = self.program_segments[i].type
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phdr.p_offset = cur_off
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phdr.p_vaddr = self.program_segments[i].addr
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phdr.p_paddr = phdr.p_vaddr # TODO
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phdr.p_filesz = len(self.program_segments[i].data)
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phdr.p_memsz = phdr.p_filesz # TODO
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phdr.p_flags = self.program_segments[i].flags
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phdr.p_align = 0 # TODO
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f.write(phdr.dump())
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cur_off += phdr.p_filesz
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# write program segments
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for i in range(len(self.program_segments)):
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f.write(self.program_segments[i].data)
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|
|
|
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class ESPCoreDumpLoaderError(ESPCoreDumpError):
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"""Core dump loader error class
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"""
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def __init__(self, message):
|
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"""Constructor for core dump loader error
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"""
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super(ESPCoreDumpLoaderError, self).__init__(message)
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|
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class ESPCoreDumpLoader(object):
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"""Core dump loader base class
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"""
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ESP32_COREDUMP_HDR_FMT = '<3L'
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ESP32_COREDUMP_HDR_SZ = struct.calcsize(ESP32_COREDUMP_HDR_FMT)
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ESP32_COREDUMP_TSK_HDR_FMT = '<3L'
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ESP32_COREDUMP_TSK_HDR_SZ = struct.calcsize(ESP32_COREDUMP_TSK_HDR_FMT)
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|
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def __init__(self):
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"""Base constructor for core dump loader
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"""
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self.fcore = None
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|
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def _get_registers_from_stack(self, data, grows_down):
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"""Returns list of registers (in GDB format) from xtensa stack frame
|
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"""
|
|
# from "gdb/xtensa-tdep.h"
|
|
# typedef struct
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# {
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#0 xtensa_elf_greg_t pc;
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#1 xtensa_elf_greg_t ps;
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#2 xtensa_elf_greg_t lbeg;
|
|
#3 xtensa_elf_greg_t lend;
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|
#4 xtensa_elf_greg_t lcount;
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|
#5 xtensa_elf_greg_t sar;
|
|
#6 xtensa_elf_greg_t windowstart;
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|
#7 xtensa_elf_greg_t windowbase;
|
|
#8..63 xtensa_elf_greg_t reserved[8+48];
|
|
#64 xtensa_elf_greg_t ar[64];
|
|
# } xtensa_elf_gregset_t;
|
|
REG_PC_IDX=0
|
|
REG_PS_IDX=1
|
|
REG_LB_IDX=2
|
|
REG_LE_IDX=3
|
|
REG_LC_IDX=4
|
|
REG_SAR_IDX=5
|
|
REG_WS_IDX=6
|
|
REG_WB_IDX=7
|
|
REG_AR_START_IDX=64
|
|
REG_AR_NUM=64
|
|
# FIXME: acc to xtensa_elf_gregset_t number of regs must be 128,
|
|
# but gdb complanis when it less then 129
|
|
REG_NUM=129
|
|
|
|
XT_SOL_EXIT=0
|
|
XT_SOL_PC=1
|
|
XT_SOL_PS=2
|
|
XT_SOL_NEXT=3
|
|
XT_SOL_AR_START=4
|
|
XT_SOL_AR_NUM=4
|
|
XT_SOL_FRMSZ=8
|
|
|
|
XT_STK_EXIT=0
|
|
XT_STK_PC=1
|
|
XT_STK_PS=2
|
|
XT_STK_AR_START=3
|
|
XT_STK_AR_NUM=16
|
|
XT_STK_SAR=19
|
|
XT_STK_EXCCAUSE=20
|
|
XT_STK_EXCVADDR=21
|
|
XT_STK_LBEG=22
|
|
XT_STK_LEND=23
|
|
XT_STK_LCOUNT=24
|
|
XT_STK_FRMSZ=25
|
|
|
|
regs = [0] * REG_NUM
|
|
# TODO: support for growing up stacks
|
|
if not grows_down:
|
|
raise ESPCoreDumpLoaderError("Growing up stacks are not supported for now!")
|
|
ex_struct = "<%dL" % XT_STK_FRMSZ
|
|
if len(data) < struct.calcsize(ex_struct):
|
|
raise ESPCoreDumpLoaderError("Too small stack to keep frame: %d bytes!" % len(data))
|
|
|
|
stack = struct.unpack(ex_struct, data[:struct.calcsize(ex_struct)])
|
|
# Stack frame type indicator is always the first item
|
|
rc = stack[XT_STK_EXIT]
|
|
if rc != 0:
|
|
regs[REG_PC_IDX] = stack[XT_STK_PC]
|
|
regs[REG_PS_IDX] = stack[XT_STK_PS]
|
|
for i in range(XT_STK_AR_NUM):
|
|
regs[REG_AR_START_IDX + i] = stack[XT_STK_AR_START + i]
|
|
regs[REG_SAR_IDX] = stack[XT_STK_SAR]
|
|
regs[REG_LB_IDX] = stack[XT_STK_LBEG]
|
|
regs[REG_LE_IDX] = stack[XT_STK_LEND]
|
|
regs[REG_LC_IDX] = stack[XT_STK_LCOUNT]
|
|
# FIXME: crashed and some running tasks (e.g. prvIdleTask) have EXCM bit set
|
|
# and GDB can not unwind callstack properly (it implies not windowed call0)
|
|
if regs[REG_PS_IDX] & (1 << 5):
|
|
regs[REG_PS_IDX] &= ~(1 << 4)
|
|
else:
|
|
regs[REG_PC_IDX] = stack[XT_SOL_PC]
|
|
regs[REG_PS_IDX] = stack[XT_SOL_PS]
|
|
for i in range(XT_SOL_AR_NUM):
|
|
regs[REG_AR_START_IDX + i] = stack[XT_SOL_AR_START + i]
|
|
nxt = stack[XT_SOL_NEXT]
|
|
|
|
# TODO: remove magic hack with saved PC to get proper value
|
|
regs[REG_PC_IDX] = ((regs[REG_PC_IDX] & 0x3FFFFFFF) | 0x40000000)
|
|
if regs[REG_PC_IDX] & 0x80000000:
|
|
regs[REG_PC_IDX] = (regs[REG_PC_IDX] & 0x3fffffff) | 0x40000000;
|
|
if regs[REG_AR_START_IDX + 0] & 0x80000000:
|
|
regs[REG_AR_START_IDX + 0] = (regs[REG_AR_START_IDX + 0] & 0x3fffffff) | 0x40000000;
|
|
return regs
|
|
|
|
def remove_tmp_file(self, fname):
|
|
"""Silently removes temporary file
|
|
"""
|
|
try:
|
|
os.remove(fname)
|
|
except OSError as e:
|
|
if e.errno != errno.ENOENT:
|
|
print "Warning failed to remove temp file '%s' (%d)!" % (fname, e.errno)
|
|
|
|
def cleanup(self):
|
|
"""Cleans up loader resources
|
|
"""
|
|
if self.fcore:
|
|
self.fcore.close()
|
|
if self.fcore_name:
|
|
self.remove_tmp_file(self.fcore_name)
|
|
|
|
def create_corefile(self, core_fname=None, off=0):
|
|
"""Creates core dump ELF file
|
|
"""
|
|
core_off = off
|
|
data = self.read_data(core_off, self.ESP32_COREDUMP_HDR_SZ)
|
|
tot_len,task_num,tcbsz = struct.unpack_from(self.ESP32_COREDUMP_HDR_FMT, data)
|
|
tcbsz_aligned = tcbsz
|
|
if tcbsz_aligned % 4:
|
|
tcbsz_aligned = 4*(tcbsz_aligned/4 + 1)
|
|
core_off += self.ESP32_COREDUMP_HDR_SZ
|
|
core_elf = ESPCoreDumpElfFile()
|
|
notes = b''
|
|
for i in range(task_num):
|
|
data = self.read_data(core_off, self.ESP32_COREDUMP_TSK_HDR_SZ)
|
|
tcb_addr,stack_top,stack_end = struct.unpack_from(self.ESP32_COREDUMP_TSK_HDR_FMT, data)
|
|
if stack_end > stack_top:
|
|
stack_len = stack_end - stack_top
|
|
stack_base = stack_top
|
|
else:
|
|
stack_len = stack_top - stack_end
|
|
stack_base = stack_end
|
|
|
|
stack_len_aligned = stack_len
|
|
if stack_len_aligned % 4:
|
|
stack_len_aligned = 4*(stack_len_aligned/4 + 1)
|
|
|
|
core_off += self.ESP32_COREDUMP_TSK_HDR_SZ
|
|
data = self.read_data(core_off, tcbsz_aligned)
|
|
if tcbsz != tcbsz_aligned:
|
|
core_elf.add_program_segment(tcb_addr, data[:tcbsz - tcbsz_aligned], ESPCoreDumpElfFile.PT_LOAD, ESPCoreDumpSegment.PF_R | ESPCoreDumpSegment.PF_W)
|
|
else:
|
|
core_elf.add_program_segment(tcb_addr, data, ESPCoreDumpElfFile.PT_LOAD, ESPCoreDumpSegment.PF_R | ESPCoreDumpSegment.PF_W)
|
|
core_off += tcbsz_aligned
|
|
data = self.read_data(core_off, stack_len_aligned)
|
|
if stack_len != stack_len_aligned:
|
|
data = data[:stack_len - stack_len_aligned]
|
|
core_elf.add_program_segment(stack_base, data, ESPCoreDumpElfFile.PT_LOAD, ESPCoreDumpSegment.PF_R | ESPCoreDumpSegment.PF_W)
|
|
core_off += stack_len_aligned
|
|
try:
|
|
task_regs = self._get_registers_from_stack(data, stack_end > stack_top)
|
|
except Exception as e:
|
|
print e
|
|
return None
|
|
prstatus = XtensaPrStatus()
|
|
prstatus.pr_cursig = 0 # TODO: set sig only for current/failed task
|
|
prstatus.pr_pid = i # TODO: use pid assigned by OS
|
|
note = Elf32NoteDesc("CORE", 1, prstatus.dump() + struct.pack("<%dL" % len(task_regs), *task_regs)).dump()
|
|
notes += note
|
|
|
|
# add notes
|
|
core_elf.add_program_segment(0, notes, ESPCoreDumpElfFile.PT_NOTE, 0)
|
|
|
|
core_elf.e_type = ESPCoreDumpElfFile.ET_CORE
|
|
core_elf.e_machine = ESPCoreDumpElfFile.EM_XTENSA
|
|
if core_fname:
|
|
fce = open(core_fname, 'wb')
|
|
else:
|
|
fhnd,core_fname = tempfile.mkstemp()
|
|
fce = os.fdopen(fhnd, 'wb')
|
|
core_elf.dump(fce)
|
|
fce.close()
|
|
return core_fname
|
|
|
|
def read_data(self, off, sz):
|
|
"""Reads data from raw core dump got from flash or UART
|
|
"""
|
|
self.fcore.seek(off)
|
|
data = self.fcore.read(sz)
|
|
return data
|
|
|
|
|
|
class ESPCoreDumpFileLoader(ESPCoreDumpLoader):
|
|
"""Core dump file loader class
|
|
"""
|
|
def __init__(self, path, b64 = False):
|
|
"""Constructor for core dump file loader
|
|
"""
|
|
super(ESPCoreDumpFileLoader, self).__init__()
|
|
self.fcore = self._load_coredump(path, b64)
|
|
|
|
def _load_coredump(self, path, b64):
|
|
"""Loads core dump from (raw binary or base64-encoded) file
|
|
"""
|
|
self.fcore_name = None
|
|
if b64:
|
|
fhnd,self.fcore_name = tempfile.mkstemp()
|
|
fcore = os.fdopen(fhnd, 'wb')
|
|
fb64 = open(path, 'rb')
|
|
try:
|
|
while True:
|
|
line = fb64.readline()
|
|
if len(line) == 0:
|
|
break
|
|
data = base64.standard_b64decode(line.rstrip('\r\n'))
|
|
fcore.write(data)
|
|
fcore.close()
|
|
fcore = open(self.fcore_name, 'rb')
|
|
except Exception as e:
|
|
if self.fcore_name:
|
|
self.remove_tmp_file(self.fcore_name)
|
|
raise e
|
|
finally:
|
|
fb64.close()
|
|
else:
|
|
fcore = open(path, 'rb')
|
|
return fcore
|
|
|
|
|
|
class ESPCoreDumpFlashLoader(ESPCoreDumpLoader):
|
|
"""Core dump flash loader class
|
|
"""
|
|
ESP32_COREDUMP_FLASH_MAGIC_START = 0xE32C04ED
|
|
ESP32_COREDUMP_FLASH_MAGIC_END = 0xE32C04ED
|
|
ESP32_COREDUMP_FLASH_MAGIC_FMT = '<L'
|
|
ESP32_COREDUMP_FLASH_MAGIC_SZ = struct.calcsize(ESP32_COREDUMP_FLASH_MAGIC_FMT)
|
|
ESP32_COREDUMP_FLASH_HDR_FMT = '<4L'
|
|
ESP32_COREDUMP_FLASH_HDR_SZ = struct.calcsize(ESP32_COREDUMP_FLASH_HDR_FMT)
|
|
|
|
def __init__(self, off, tool_path=None, chip='esp32', port=None, baud=None):
|
|
"""Constructor for core dump flash loader
|
|
"""
|
|
super(ESPCoreDumpFlashLoader, self).__init__()
|
|
if not tool_path:
|
|
self.path = esptool.__file__
|
|
_,e = os.path.splitext(self.path)
|
|
if e == '.pyc':
|
|
self.path = self.path[:-1]
|
|
else:
|
|
self.path = tool_path
|
|
self.port = port
|
|
self.baud = baud
|
|
self.chip = chip
|
|
self.dump_sz = 0
|
|
self.fcore = self._load_coredump(off)
|
|
|
|
def _load_coredump(self, off):
|
|
"""Loads core dump from flash
|
|
"""
|
|
tool_args = [sys.executable, self.path, '-c', self.chip]
|
|
if self.port:
|
|
tool_args.extend(['-p', self.port])
|
|
if self.baud:
|
|
tool_args.extend(['-b', str(self.baud)])
|
|
tool_args.extend(['read_flash', str(off), str(self.ESP32_COREDUMP_FLASH_HDR_SZ), ''])
|
|
|
|
self.fcore_name = None
|
|
try:
|
|
fhnd,self.fcore_name = tempfile.mkstemp()
|
|
tool_args[-1] = self.fcore_name
|
|
# read core dump length
|
|
et_out = subprocess.check_output(tool_args)
|
|
print et_out
|
|
f = os.fdopen(fhnd, 'rb')
|
|
self.dump_sz = self._read_core_dump_length(f)
|
|
# read core dump
|
|
tool_args[-2] = str(self. dump_sz)
|
|
et_out = subprocess.check_output(tool_args)
|
|
print et_out
|
|
except subprocess.CalledProcessError as e:
|
|
print "esptool script execution failed with err %d" % e.returncode
|
|
print "Command ran: '%s'" % e.cmd
|
|
print "Command out:"
|
|
print e.output
|
|
if self.fcore_name:
|
|
self.remove_tmp_file(self.fcore_name)
|
|
raise e
|
|
return f
|
|
|
|
def _read_core_dump_length(self, f):
|
|
"""Reads core dump length
|
|
"""
|
|
data = f.read(4*4)
|
|
mag1,tot_len,task_num,tcbsz = struct.unpack_from(self.ESP32_COREDUMP_FLASH_HDR_FMT, data)
|
|
if mag1 != self.ESP32_COREDUMP_FLASH_MAGIC_START:
|
|
raise ESPCoreDumpLoaderError("Invalid start magic number!")
|
|
return tot_len
|
|
|
|
def create_corefile(self, core_fname=None):
|
|
"""Checks flash coredump data integrity and creates ELF file
|
|
"""
|
|
data = self.read_data(0, self.ESP32_COREDUMP_FLASH_MAGIC_SZ)
|
|
mag1, = struct.unpack_from(self.ESP32_COREDUMP_FLASH_MAGIC_FMT, data)
|
|
if mag1 != self.ESP32_COREDUMP_FLASH_MAGIC_START:
|
|
raise ESPCoreDumpLoaderError("Invalid start marker %x" % mag1)
|
|
|
|
data = self.read_data(self.dump_sz-self.ESP32_COREDUMP_FLASH_MAGIC_SZ, self.ESP32_COREDUMP_FLASH_MAGIC_SZ)
|
|
mag2, = struct.unpack_from(self.ESP32_COREDUMP_FLASH_MAGIC_FMT, data)
|
|
if mag2 != self.ESP32_COREDUMP_FLASH_MAGIC_END:
|
|
raise ESPCoreDumpLoaderError("Invalid end marker %x" % mag2)
|
|
|
|
return super(ESPCoreDumpFlashLoader, self).create_corefile(core_fname, off=self.ESP32_COREDUMP_FLASH_MAGIC_SZ)
|
|
|
|
|
|
class GDBMIOutRecordHandler(object):
|
|
"""GDB/MI output record handler base class
|
|
"""
|
|
TAG = ''
|
|
|
|
def __init__(self, f, verbose=False):
|
|
"""Base constructor for GDB/MI output record handler
|
|
"""
|
|
self.verbose = verbose
|
|
|
|
def execute(self, ln):
|
|
"""Base method to execute GDB/MI output record handler function
|
|
"""
|
|
if self.verbose:
|
|
print "%s.execute: [[%s]]" % (self.__class__.__name__, ln)
|
|
|
|
|
|
class GDBMIOutStreamHandler(GDBMIOutRecordHandler):
|
|
"""GDB/MI output stream handler class
|
|
"""
|
|
def __init__(self, f, verbose=False):
|
|
"""Constructor for GDB/MI output stream handler
|
|
"""
|
|
super(GDBMIOutStreamHandler, self).__init__(None, verbose)
|
|
self.func = f
|
|
|
|
def execute(self, ln):
|
|
"""Executes GDB/MI output stream handler function
|
|
"""
|
|
GDBMIOutRecordHandler.execute(self, ln)
|
|
if self.func:
|
|
# remove TAG / quotes and replace c-string \n with actual NL
|
|
self.func(ln[1:].strip('"').replace('\\n', '\n').replace('\\t', '\t'))
|
|
|
|
|
|
class GDBMIResultHandler(GDBMIOutRecordHandler):
|
|
"""GDB/MI result handler class
|
|
"""
|
|
TAG = '^'
|
|
RC_DONE = 'done'
|
|
RC_RUNNING = 'running'
|
|
RC_CONNECTED = 'connected'
|
|
RC_ERROR = 'error'
|
|
RC_EXIT = 'exit'
|
|
|
|
def __init__(self, verbose=False):
|
|
"""Constructor for GDB/MI result handler
|
|
"""
|
|
super(GDBMIResultHandler, self).__init__(None, verbose)
|
|
self.result_class = None
|
|
self.result_str = None
|
|
|
|
def _parse_rc(self, ln, rc):
|
|
"""Parses result code
|
|
"""
|
|
rc_str = "{0}{1}".format(self.TAG, rc)
|
|
if ln.startswith(rc_str):
|
|
self.result_class = rc
|
|
sl = len(rc_str)
|
|
if len(ln) > sl:
|
|
self.result_str = ln[sl:]
|
|
if self.result_str.startswith(','):
|
|
self.result_str = self.result_str[1:]
|
|
else:
|
|
print "Invalid result format: '%s'" % ln
|
|
else:
|
|
self.result_str = ''
|
|
return True
|
|
return False
|
|
|
|
def execute(self, ln):
|
|
"""Executes GDB/MI result handler function
|
|
"""
|
|
GDBMIOutRecordHandler.execute(self, ln)
|
|
if self._parse_rc(ln, self.RC_DONE):
|
|
return
|
|
if self._parse_rc(ln, self.RC_RUNNING):
|
|
return
|
|
if self._parse_rc(ln, self.RC_CONNECTED):
|
|
return
|
|
if self._parse_rc(ln, self.RC_ERROR):
|
|
return
|
|
if self._parse_rc(ln, self.RC_EXIT):
|
|
return
|
|
print "Unknown GDB/MI result: '%s'" % ln
|
|
|
|
|
|
class GDBMIStreamConsoleHandler(GDBMIOutStreamHandler):
|
|
"""GDB/MI console stream handler class
|
|
"""
|
|
TAG = '~'
|
|
|
|
|
|
def dbg_corefile(args):
|
|
""" Command to load core dump from file or flash and run GDB debug session with it
|
|
"""
|
|
global CLOSE_FDS
|
|
loader = None
|
|
if not args.core:
|
|
loader = ESPCoreDumpFlashLoader(args.off, port=args.port)
|
|
core_fname = loader.create_corefile(args.save_core)
|
|
if not core_fname:
|
|
print "Failed to create corefile!"
|
|
loader.cleanup()
|
|
return
|
|
else:
|
|
core_fname = args.core
|
|
if args.core_format and args.core_format != 'elf':
|
|
loader = ESPCoreDumpFileLoader(core_fname, args.core_format == 'b64')
|
|
core_fname = loader.create_corefile(args.save_core)
|
|
if not core_fname:
|
|
print "Failed to create corefile!"
|
|
loader.cleanup()
|
|
return
|
|
|
|
p = subprocess.Popen(
|
|
bufsize = 0,
|
|
args = [args.gdb,
|
|
'--nw', # ignore .gdbinit
|
|
'--core=%s' % core_fname, # core file
|
|
args.prog],
|
|
stdin = None, stdout = None, stderr = None,
|
|
close_fds = CLOSE_FDS
|
|
)
|
|
p.wait()
|
|
|
|
if loader:
|
|
if not args.core and not args.save_core:
|
|
loader.remove_tmp_file(core_fname)
|
|
loader.cleanup()
|
|
print 'Done!'
|
|
|
|
|
|
def info_corefile(args):
|
|
""" Command to load core dump from file or flash and print it's data in user friendly form
|
|
"""
|
|
global CLOSE_FDS
|
|
def gdbmi_console_stream_handler(ln):
|
|
sys.stdout.write(ln)
|
|
sys.stdout.flush()
|
|
|
|
def gdbmi_read2prompt(f, out_handlers=None):
|
|
while True:
|
|
ln = f.readline().rstrip(' \r\n')
|
|
if ln == '(gdb)':
|
|
break
|
|
elif len(ln) == 0:
|
|
break
|
|
elif out_handlers:
|
|
for h in out_handlers:
|
|
if ln.startswith(out_handlers[h].TAG):
|
|
out_handlers[h].execute(ln)
|
|
break
|
|
|
|
def gdbmi_start(handlers):
|
|
p = subprocess.Popen(
|
|
bufsize = 0,
|
|
args = [args.gdb,
|
|
'--quiet', # inhibit dumping info at start-up
|
|
'--nx', # inhibit window interface
|
|
'--nw', # ignore .gdbinit
|
|
'--interpreter=mi2', # use GDB/MI v2
|
|
'--core=%s' % core_fname, # core file
|
|
args.prog],
|
|
stdin = subprocess.PIPE, stdout = subprocess.PIPE, stderr = subprocess.STDOUT,
|
|
close_fds = CLOSE_FDS
|
|
)
|
|
gdbmi_read2prompt(p.stdout, handlers)
|
|
return p
|
|
|
|
def gdbmi_getinfo(p, handlers, gdb_cmd):
|
|
for t in handlers:
|
|
handlers[t].result_class = None
|
|
p.stdin.write("-interpreter-exec console \"%s\"\n" % gdb_cmd)
|
|
gdbmi_read2prompt(p.stdout, handlers)
|
|
if not handlers[GDBMIResultHandler.TAG].result_class or handlers[GDBMIResultHandler.TAG].result_class == GDBMIResultHandler.RC_EXIT:
|
|
print "GDB exited (%s / %s)!" % (handlers[GDBMIResultHandler.TAG].result_class, handlers[GDBMIResultHandler.TAG].result_str)
|
|
p.wait()
|
|
print "Problem occured! GDB exited, restart it."
|
|
p = gdbmi_start(handlers)
|
|
elif handlers[GDBMIResultHandler.TAG].result_class != GDBMIResultHandler.RC_DONE:
|
|
print "GDB/MI command failed (%s / %s)!" % (handlers[GDBMIResultHandler.TAG].result_class, handlers[GDBMIResultHandler.TAG].result_str)
|
|
return p
|
|
|
|
|
|
loader = None
|
|
if not args.core:
|
|
loader = ESPCoreDumpFlashLoader(args.off, port=args.port)
|
|
core_fname = loader.create_corefile(args.save_core)
|
|
if not core_fname:
|
|
print "Failed to create corefile!"
|
|
loader.cleanup()
|
|
return
|
|
else:
|
|
core_fname = args.core
|
|
if args.core_format and args.core_format != 'elf':
|
|
loader = ESPCoreDumpFileLoader(core_fname, args.core_format == 'b64')
|
|
core_fname = loader.create_corefile(args.save_core)
|
|
if not core_fname:
|
|
print "Failed to create corefile!"
|
|
loader.cleanup()
|
|
return
|
|
|
|
exe_elf = ESPCoreDumpElfFile(args.prog)
|
|
core_elf = ESPCoreDumpElfFile(core_fname)
|
|
merged_segs = []
|
|
core_segs = core_elf.program_segments
|
|
for s in exe_elf.sections:
|
|
merged = False
|
|
for ps in core_segs:
|
|
if ps.addr <= s.addr and ps.addr + len(ps.data) >= s.addr:
|
|
# sec: |XXXXXXXXXX|
|
|
# seg: |...XXX.............|
|
|
seg_addr = ps.addr
|
|
if ps.addr + len(ps.data) <= s.addr + len(s.data):
|
|
# sec: |XXXXXXXXXX|
|
|
# seg: |XXXXXXXXXXX...|
|
|
# merged: |XXXXXXXXXXXXXX|
|
|
seg_len = len(s.data) + (s.addr - ps.addr)
|
|
else:
|
|
# sec: |XXXXXXXXXX|
|
|
# seg: |XXXXXXXXXXXXXXXXX|
|
|
# merged: |XXXXXXXXXXXXXXXXX|
|
|
seg_len = len(ps.data)
|
|
merged_segs.append((s.name, seg_addr, seg_len, s.attr_str(), True))
|
|
core_segs.remove(ps)
|
|
merged = True
|
|
elif ps.addr >= s.addr and ps.addr <= s.addr + len(s.data):
|
|
# sec: |XXXXXXXXXX|
|
|
# seg: |...XXX.............|
|
|
seg_addr = s.addr
|
|
if (ps.addr + len(ps.data)) >= (s.addr + len(s.data)):
|
|
# sec: |XXXXXXXXXX|
|
|
# seg: |..XXXXXXXXXXX|
|
|
# merged: |XXXXXXXXXXXXX|
|
|
seg_len = len(s.data) + (ps.addr + len(ps.data)) - (s.addr + len(s.data))
|
|
else:
|
|
# sec: |XXXXXXXXXX|
|
|
# seg: |XXXXXX|
|
|
# merged: |XXXXXXXXXX|
|
|
seg_len = len(s.data)
|
|
merged_segs.append((s.name, seg_addr, seg_len, s.attr_str(), True))
|
|
core_segs.remove(ps)
|
|
merged = True
|
|
|
|
if not merged:
|
|
merged_segs.append((s.name, s.addr, len(s.data), s.attr_str(), False))
|
|
|
|
handlers = {}
|
|
handlers[GDBMIResultHandler.TAG] = GDBMIResultHandler(verbose=False)
|
|
handlers[GDBMIStreamConsoleHandler.TAG] = GDBMIStreamConsoleHandler(None, verbose=False)
|
|
p = gdbmi_start(handlers)
|
|
|
|
print "==============================================================="
|
|
print "==================== ESP32 CORE DUMP START ===================="
|
|
|
|
handlers[GDBMIResultHandler.TAG].result_class = None
|
|
handlers[GDBMIStreamConsoleHandler.TAG].func = gdbmi_console_stream_handler
|
|
print "\n================== CURRENT THREAD REGISTERS ==================="
|
|
p = gdbmi_getinfo(p, handlers, "info registers")
|
|
print "\n==================== CURRENT THREAD STACK ====================="
|
|
p = gdbmi_getinfo(p, handlers, "bt")
|
|
print "\n======================== THREADS INFO ========================="
|
|
p = gdbmi_getinfo(p, handlers, "info threads")
|
|
print "\n======================= ALL MEMORY REGIONS ========================"
|
|
print "Name Address Size Attrs"
|
|
for ms in merged_segs:
|
|
print "%s 0x%x 0x%x %s" % (ms[0], ms[1], ms[2], ms[3])
|
|
for cs in core_segs:
|
|
print ".coredump.tasks 0x%x 0x%x %s" % (cs.addr, len(cs.data), cs.attr_str())
|
|
if args.print_mem:
|
|
print "\n====================== CORE DUMP MEMORY CONTENTS ========================"
|
|
for cs in core_elf.program_segments:
|
|
print ".coredump.tasks 0x%x 0x%x %s" % (cs.addr, len(cs.data), cs.attr_str())
|
|
p = gdbmi_getinfo(p, handlers, "x/%dx 0x%x" % (len(cs.data)/4, cs.addr))
|
|
|
|
print "\n===================== ESP32 CORE DUMP END ====================="
|
|
print "==============================================================="
|
|
|
|
p.stdin.write('q\n')
|
|
p.wait()
|
|
p.stdin.close()
|
|
p.stdout.close()
|
|
|
|
if loader:
|
|
if not args.core and not args.save_core:
|
|
loader.remove_tmp_file(core_fname)
|
|
loader.cleanup()
|
|
print 'Done!'
|
|
|
|
|
|
def main():
|
|
parser = argparse.ArgumentParser(description='espcoredump.py v%s - ESP32 Core Dump Utility' % __version__, prog='espcoredump')
|
|
|
|
parser.add_argument('--chip', '-c',
|
|
help='Target chip type',
|
|
choices=['auto', 'esp32'],
|
|
default=os.environ.get('ESPTOOL_CHIP', 'auto'))
|
|
|
|
parser.add_argument(
|
|
'--port', '-p',
|
|
help='Serial port device',
|
|
default=os.environ.get('ESPTOOL_PORT', esptool.ESPLoader.DEFAULT_PORT))
|
|
|
|
parser.add_argument(
|
|
'--baud', '-b',
|
|
help='Serial port baud rate used when flashing/reading',
|
|
type=int,
|
|
default=os.environ.get('ESPTOOL_BAUD', esptool.ESPLoader.ESP_ROM_BAUD))
|
|
|
|
subparsers = parser.add_subparsers(
|
|
dest='operation',
|
|
help='Run coredumper {command} -h for additional help')
|
|
|
|
parser_debug_coredump = subparsers.add_parser(
|
|
'dbg_corefile',
|
|
help='Starts GDB debugging session with specified corefile')
|
|
parser_debug_coredump.add_argument('--gdb', '-g', help='Path to gdb', default='xtensa-esp32-elf-gdb')
|
|
parser_debug_coredump.add_argument('--core', '-c', help='Path to core dump file (if skipped core dump will be read from flash)', type=str)
|
|
parser_debug_coredump.add_argument('--core-format', '-t', help='(elf, raw or b64). File specified with "-c" is an ELF ("elf"), raw (raw) or base64-encoded (b64) binary', type=str, default='elf')
|
|
parser_debug_coredump.add_argument('--off', '-o', help='Ofsset of coredump partition in flash (type "make partition_table" to see).', type=int, default=0x110000)
|
|
parser_debug_coredump.add_argument('--save-core', '-s', help='Save core to file. Othwerwise temporary core file will be deleted. Ignored with "-c"', type=str)
|
|
parser_debug_coredump.add_argument('prog', help='Path to program\'s ELF binary', type=str)
|
|
|
|
parser_info_coredump = subparsers.add_parser(
|
|
'info_corefile',
|
|
help='Print core dump info from file')
|
|
parser_info_coredump.add_argument('--gdb', '-g', help='Path to gdb', default='xtensa-esp32-elf-gdb')
|
|
parser_info_coredump.add_argument('--core', '-c', help='Path to core dump file (if skipped core dump will be read from flash)', type=str)
|
|
parser_info_coredump.add_argument('--core-format', '-t', help='(elf, raw or b64). File specified with "-c" is an ELF ("elf"), raw (raw) or base64-encoded (b64) binary', type=str, default='elf')
|
|
parser_info_coredump.add_argument('--off', '-o', help='Ofsset of coredump partition in flash (type "make partition_table" to see).', type=int, default=0x110000)
|
|
parser_info_coredump.add_argument('--save-core', '-s', help='Save core to file. Othwerwise temporary core file will be deleted. Does not work with "-c"', type=str)
|
|
parser_info_coredump.add_argument('--print-mem', '-m', help='Print memory dump', action='store_true')
|
|
parser_info_coredump.add_argument('prog', help='Path to program\'s ELF binary', type=str)
|
|
|
|
# internal sanity check - every operation matches a module function of the same name
|
|
for operation in subparsers.choices.keys():
|
|
assert operation in globals(), "%s should be a module function" % operation
|
|
|
|
args = parser.parse_args()
|
|
|
|
print 'espcoredump.py v%s' % __version__
|
|
|
|
operation_func = globals()[args.operation]
|
|
operation_func(args)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
try:
|
|
main()
|
|
except ESPCoreDumpError as e:
|
|
print '\nA fatal error occurred: %s' % e
|
|
sys.exit(2)
|