dxddlmZddlmZmZmZddlmZmZddl Z dZ dZ d Z dd Z dd Zdd Zdd ZedZdZdZdZdZddZdZy))contextmanager) ELFParseErrorELFError DWARFError)ConstructErrorULInt8Nc:i}|D]}|j||S)z6Given any number of dicts, merges them into a new one.)update)dictsresultds 7/usr/lib/python3/dist-packages/elftools/common/utils.py merge_dictsrs' F  a Mc$|jdS)z$Decode a bytes object into a string.zlatin-1)decode)bs r bytes2strrs 88I rc2djd|DS)zd Convert a list of byte values (e.g. [0x10 0x20 0x00]) to a bytes object (e.g. b' '). rc34K|]}t|fywN)bytes).0rs r z"bytelist2string..s2AE1$K2s)join)bytelists rbytelist2stringrs 8822 22rc ||j||j|S#t$r}tt |d}~wwxYw)a4 Convenience function for using the given struct to parse a stream. If stream_pos is provided, the stream is seeked to this position before the parsing is done. Otherwise, the current position of the stream is used. Wraps the error thrown by construct with ELFParseError. N)seek parse_streamr rstr)structstream stream_poses r struct_parser(!sI$  ! KK #""6** $CF##$s#& AAAc||j|d}g}d} |j|}|jd}|dk\r|j|d|d}n!|j|t ||krn_|rdj |SdS)a Parse a C-string from the given stream. The string is returned without the terminating byte. If the terminating byte wasn't found, None is returned (the stream is exhausted). If stream_pos is provided, the stream is seeked to this position before the parsing is done. Otherwise, the current position of the stream is used. Note: a bytes object is returned here, because this is what's read from the binary file. N@FTrr)r!readfindappendlenr)r%r& CHUNKSIZEchunksfoundchunk end_indexs rparse_cstring_from_streamr50s JI F E  I&JJw' > MM% + ,E  MM% u: !   %388F .$.rc&t||ty)z= Assert that cond is True, otherwise raise ELFError(msg) N)_assert_with_exceptionrcondmsgs r elf_assertr;Ms4h/rc&t||ty)z? Assert that cond is True, otherwise raise DWARFError(msg) N)r7rr8s r dwarf_assertr=Ss4j1rc#VK|j}d|j|yw)z Usage: # stream has some position FOO (return value of stream.tell()) with preserve_stream_pos(stream): # do stuff that manipulates the stream # stream still has position FOO N)tellr!)r% saved_poss rpreserve_stream_posrAYs" I  KK s')c$|dz d|zdz zdzS)z Round up a number to nearest multiple of 2^bits. The result is a number where the least significant bits passed in bits are 0. r)numbitss rrounduprFfs  !GqDyAo % **rcdt|Dcgc]}ttd|c}Scc}w)z9Read length bytes from stream, return a list of ints )ranger(r )r%lengthis r read_blobrLls'7rgsl&;;. 3 $/:0 2   + E "-"r