1 ToDo list for elfutils -*-outline-*-
4 Time-stamp: <2009-02-05 22:08:01 drepper>
8 Remove everywhere. Use mkdir -p.
14 Currently the elf_update function trusts the user blindly if the
15 ELF_F_LAYOUT flag is set. This is OK if the data is prepared by a
16 ELF_C_NULL call but not if the user prepared the data herself
18 ** break out archive handling from elf_begin
20 The handling of archives (especially of the symbol tables) must be
21 broken out of elf_begin. There are several different forms of
22 archives and only when having the archive handling separately this
25 ** shdrs in read-only files
27 When reading (ELF_C_READ*) then there is no need to malloc Shdr
28 structure in elfXX_getshdr if file is mmaped and unaligned access
29 is allowed or the structure is aligned. Use ELF_F_MALLOCED flag
32 ** shdrs after elf_cntl (ELF_C_FDREAD)
34 Similar to the above. After ELF_C_FDREAD the file is completely
35 in memory. See also this mailing list thread:
36 https://fedorahosted.org/pipermail/elfutils-devel/2012-July/002368.html
40 ** More memory access checks needed
42 All accesses to the debug sections should make sure the offsets are
43 valid. This is currently especially a problem with leb128 accesses.
45 ** Low level macro information operations
47 in 5.11.3 are not implemented. gcc currently does not emit this
48 information so I cannot test it.
50 ** Rename dwarf_getabbrev
69 ** add demangler support
71 Use demangler from libiberty.
73 ** add support to read debugging symbols
75 Implement -l option for BSD and POSIX format
80 ** support SHT_SYMTAB_SHNDX
82 should be removed if not needed anymore
86 ** sanity check .rel sh_info content
88 the sh_info of all .rel sections with the same name must point to
89 sections which also have the same name
93 to locate shared libraries also use /etc/ld.so.conf
95 ** handle object files for different architectures
97 ld.so is expected to ignore object files for different architectures and
98 continue looking for a matching file (e.g., ignore 32-bit binaries on
99 64-bit platforms and vice versa). We probably need the same in ld.
101 ** reuse after elf_end
103 Some files are closed using elf_end. They are removed from memory only
104 if no reference is left (especially for archives this is a problem).
105 The old mapping should be reused in that case. The problem is worse
106 for files which are not mapped read-only (archives again).
108 ** size for STT_SECTION entries
110 The STT_SECTION entries have zero for the size but can easily get
111 the size of the section.
115 Not implemented at all in the moment except for recognition of the option
118 ** variables with aliases in executables
120 When linking an executable with a references against a variable in a
121 DSO, create symbol table entries for all the aliases of the variable
122 in the DSO and create a relocation for one of them (a non-weak
129 1st GOT entry == _DYNAMIC
131 check versioning info:
133 always BASE in verdef
134 sh_size/sh_entsize matches last offset != 0
136 check whether any relocation is for a merge-able section
138 check TLS relocation depencies
140 Check content of .eh_frame_hdr, .eh_frame, .gcc_except_table
144 check that R_386_TLS_GD is followed by R_386_PLT32 for __tls_get_addr
148 prelink generated files
152 ** treat relocation sections special
154 Differences in the relocation sections can be ignored if all
155 the same symbols with the same targets are present and the order
156 of overlapping relocations doesn't change. There really never
157 should be overlapping relocations but who knows.
161 Sun has it. Can modify sections which are not in segments.
164 Append string to the comment section of the ELF object
165 files. If string contains embedded blanks, it must be
166 enclosed in quotation marks.
168 -c Compress the contents of the comment section of the
169 ELF object files. All duplicate entries are removed.
170 The ordering of the remaining entries is not dis-
173 -d Delete the contents of the comment section from the
174 ELF object files. The section header for the comment
175 section is also removed.
178 Specify the name of the comment section to access if
179 other than .comment. By default, mcs deals with the
180 section named .comment. This option can be used to
181 specify another section. mcs can take multiple -n
182 options to allow for specification of multiple sec-
185 -p Print the contents of the comment section on the stan-
186 dard output. Each section printed is tagged by the
187 name of the file from which it was extracted, using
188 the format file[member_name]: for archive files and
189 file: for other files.
191 -V Print on standard error the version number of mcs.
194 eval:(hide-sublevels 3)