| #------------------------------------------------------------------------------- |
| # elftools: dwarf/callframe.py |
| # |
| # DWARF call frame information |
| # |
| # Eli Bendersky (eliben@gmail.com) |
| # This code is in the public domain |
| #------------------------------------------------------------------------------- |
| from ..common.utils import (struct_parse) |
| from .structs import DWARFStructs |
| |
| |
| class CallFrameInfo(object): |
| def __init__(self, stream, size, base_structs): |
| self.stream = stream |
| self.size = size |
| self.base_structs = base_structs |
| |
| def _parse_entries(self): |
| offset = 0 |
| while offset < self.size: |
| entry_length = struct_parse( |
| self.base_structs.Dwarf_uint32(''), self.stream, offset) |
| dwarf_format = 64 if entry_length == 0xFFFFFFFF else 32 |
| |
| entry_structs = DWARFStructs( |
| little_endian=self.base_structs.little_endian, |
| dwarf_format=dwarf_format, |
| address_size=self.base_structs.address_size) |
| |
| # ZZZ: it will be easier to split entry reading: |
| # header: what comes before the instructions |
| # the instructions are parsed separately (their length is computed |
| # from the length and the tell() after parsing the header) |
| |
