Serge Lamikhov-Center committed [bb3a08] on Code

Relate TLS sections to TLS segments only

Serge Lamikhov-Center committed [5dd192] on Code

Output Section to Segment mapping

Serge Lamikhov-Center committed [a872f7] on Code

Add test that verifies that get_symbols_num() returns increased value after add_symbol()

Serge Lamikhov-Center committed [92b9b6] on Code

check that stream is big enough, accounting for overflow

Serge Lamikhov-Center committed [3bc66a] on Code

Add arm relocation types

Serge Lamikhov-Center committed [d33fad] on Code

Just reformatting

Serge Lamikhov-Center committed [e2a3d0] on Code

Add test for segment size change bug

Serge Lamikhov-Center committed [45af83] on Code

Add yet another "Elf in a library" image

Serge Lamikhov-Center committed [730207] on Code

Fix: 32 typos

Serge Lamikhov-Center committed [8a08b5] on Code

Upgrade GitHub actions

Serge Lamikhov-Center committed [a428b7] on Code

Check file offset doesn't exceed file size

Serge Lamikhov-Center committed [e36131] on Code

Add RISC-V relocation types

Serge Lamikhov-Center committed [182248] on Code

Validate size of entries before accessing members

Serge Lamikhov-Center committed [9814ea] on Code

Fix warning shown up with clang compiler

Serge Lamikhov-Center committed [2b457d] on Code

Change a comment

Serge Lamikhov-Center committed [1a92db] on Code

Proper ignore resource files for CPack

Serge Lamikhov-Center committed [c5e56b] on Code

Unused images are moved to a separate folder

Serge Lamikhov-Center committed [87d64f] on Code

Move artworks folder to 'doc' directory

GitHub committed [36c453] on Code

Increase the library version number

GitHub committed [1a6eb4] on Code

The workflow is used by another project

GitHub committed [80f721] on Code

Add workflow_dispatch

GitHub committed [4834f7] on Code

Permit workflow_call

GitHub committed [332c14] on Code

Move to actions/checkout@v4

GitHub committed [aa2dbf] on Code

Add Windows-2019

GitHub committed [7e6359] on Code

Add 2 Mac OSes

GitHub committed [70345f] on Code

Add Mac builds

GitHub committed [480a39] on Code

Add c_compiler

GitHub committed [4c4e77] on Code

Advance Google Test commit #

GitHub committed [6a94d4] on Code

Remove C compiler settings

GitHub committed [05a0f3] on Code

Exclude cl.exe build from Ubuntu-20-04

GitHub committed [da52b0] on Code

Add older Ubuntu OS version

GitHub committed [418e97] on Code

Update c-cpp.yml

Serge Lamikhov-Center committed [4bc17b] on Code

Green title

Serge Lamikhov-Center committed [a528c2] on Code

Fix formatting

Serge Lamikhov-Center committed [d950dd] on Code

The library artwork added

Serge Lamikhov-Center committed [eb6882] on Code

Remove unnecessary files in 'test' directory

Serge Lamikhov-Center committed [5b2a6c] on Code

Change relocation type to R_X86_64_32

Serge Lamikhov-Center committed [e07864] on Code

Experimental change of section table alignment to 16

Serge Lamikhov-Center committed [47af3a] on Code

Rename 'free_data' test

Serge Lamikhov-Center modified ticket #6

Best way to overlay segment/section data

Serge Lamikhov-Center modified ticket #6

Best way to overlay segment/section data

Serge Lamikhov-Center posted a comment on ticket #6

I have applied the changes in commit #e078644. The tests are still passing and "write" examples are functional. So, let it be the new default value

Serge Lamikhov-Center posted a comment on ticket #6

I do see the changes inside the correspondence above. Changing the alignment from 4 to 16 did the work. I am wondering why this value is chosen and on base of what information the library can select appropriate value. I have modified the value to 16 and all tests are still passing. The question is whether it should be the default value

Serge Lamikhov-Center posted a comment on ticket #6

Hi Steve, Unfortunately, I didn't find your Push Request and/or user name in GitHub. So, I could not review the submission

Serge Lamikhov-Center committed [c86883] on Code

Implement free_data() for sections too

Serge Lamikhov-Center committed [0399b9] on Code

Add segment's free_data() description to the doc

Serge Lamikhov-Center committed [73a241] on Code

Refactor the last commit

Serge Lamikhov-Center committed [089160] on Code

Use more portable function memchr()

Serge Lamikhov-Center committed [8ae6ce] on Code

C++17 refactoring

Serge Lamikhov-Center committed [5a9297] on Code

Use c++17 standard

ELFIO released /Release_3.12/elfio-3.12.zip

ELFIO released /Release_3.12/elfio-3.12.tar.gz

Steve Clevenger posted a comment on ticket #6

I've merged my ELFIO Release 3.11 work to a local ELFIO clone of https://github.com/serge1/ELFIO and created a branch. Unfortunately, I couldn't compile the new source base with my compiler and cmake settings. My inexperience with cmake made my early builds of ELFIO problematic. As I recall, there were a number of changes required to get it to work. I used the headers only and didn't even try to build a library. Also, do you need to add a permission for me to push a branch to https://github.com/serge1/ELFIO?...

Serge Lamikhov-Center posted a comment on ticket #6

Hi, it looks like I missed all the action. Please submit your changes. If possible, please do it as a GitHub pull request: https://github.com/serge1/ELFIO

Steve Clevenger posted a comment on ticket #6

The problem is the alignmentError calculated in layout_section_table(). My ELFCLASS64 file requires a 16 byte alignment. The following implementation (hack) will provide the expected result. The ELF specification states the the section header alignment is based off the sh_addralign value. "Only 0 and positive integral powers of 2 are currently allowed. A value of 0 or 1 indicates no address alignment constraints." As I understand it, the first section is SHT_NULL. The first (code) section in my file...

Steve Clevenger posted a comment on ticket #6

Hi Serge, I narrowed this down to a single load/save operation without any patching. If a vmlinux ELF file is loaded with ELFIO load, then immediately saved with ELFIO save, the vmlinux copy is shorter by 4 bytes with the other differences attributable only to the save operation. The host system is AARCH64 Fedora Linux. How can I help? I have only GDB command-line debug available to me (decades old technology), and this C++ is heavily templated.

Steve Clevenger modified a comment on ticket #6

Here's another data point. It may/may not be meaningful. If I dump the ELF header on each file after the patch operation, the first difference I see is the value of the e_shoff field (section header table offset) has shifted 4 bytes in the patched file. I would expect no difference here. [root@sut01sys-b212 build]# hexdump -C -n 64 ~/linux/vmlinux 00000000 7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00 |.ELF............| 00000010 03 00 b7 00 01 00 00 00 00 00 00 08 00 80 ff ff |................|...

Steve Clevenger posted a comment on ticket #6

Here's another data point. It may/may not be meaningful. If I dump the ELF header on each file after the patch operation, the first difference I see is the value of the e_shoff filed (section header table offset) has shifted 4 bytes in the patched file. I would expect no difference here. [root@sut01sys-b212 build]# hexdump -C -n 64 ~/linux/vmlinux 00000000 7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00 |.ELF............| 00000010 03 00 b7 00 01 00 00 00 00 00 00 08 00 80 ff ff |................|...

Steve Clevenger modified a comment on ticket #6

Here's a code snippet. I loop through the executable sections of the file to be patched, then read the corresponding segment code. The challenge is patching (overlaying) the code correctly. bool b_patched = false; for (int i = 0; i < writer.sections.size(); ++i) { section* p_sec = writer.sections[i]; Elf64_Addr section_addr = p_sec->get_address(); Elf_Xword section_sz = p_sec->get_size(); if ((p_sec->get_type() & SHT_PROGBITS) && (p_sec->get_flags() & SHF_EXECINSTR)) { Elf_Half seg_num = reader.segments.size();...

Anonymous posted a comment on ticket #6

Thank you. My utility takes 2 file arguments. As a self test, I specified an exact copy of the reader vmlinux file for the writer. Interestingly, the writer (patched) file is written 4 bytes shorter than the original vmlinux. There are a number of diffs. I would expect the patched file to be the same as the original since it was an exact copy.

Serge Lamikhov-Center posted a comment on ticket #6

Thank you for your enquiry. Please let me couple of days to look at this

Steve Clevenger modified a comment on ticket #6

Here's a code snippet. I loop through the executable sections of the file to be patched, then read the corresponding segment code. The challenge is patching (overlaying) the code correctly. bool b_patched = false; for (int i = 0; i < writer.sections.size(); ++i) { section* p_sec = writer.sections[i]; Elf64_Addr section_addr = p_sec->get_address(); Elf_Xword section_sz = p_sec->get_size(); if ((p_sec->get_type() & SHT_PROGBITS) && (p_sec->get_flags() & SHF_EXECINSTR)) { Elf_Half seg_num = reader.segments.size();...

Steve Clevenger posted a comment on ticket #6

Here's a code snippet. I loop through the executable sections of the file to be patched, then read the corresponding segment code. The challenge is patching (overlaying) the code correctly. bool b_patched = false; for (int i = 0; i < writer.sections.size(); ++i) { section* p_sec = writer.sections[i]; Elf64_Addr section_addr = p_sec->get_address(); Elf_Xword section_sz = p_sec->get_size(); if ((p_sec->get_type() & SHT_PROGBITS) && (p_sec->get_flags() & SHF_EXECINSTR)) { Elf_Half seg_num = reader.segments.size();...

Steve Clevenger created ticket #6

Best way to overlay segment/section data

Serge Lamikhov-Center committed [d251da] on Code

Remove unnecessary initialization that causes GCC warning

Serge Lamikhov-Center committed [aecc19] on Code

Use CodeQL Actions v2

Serge Lamikhov-Center committed [be202e] on Code

Minor refactoring

Serge Lamikhov-Center committed [5be0f9] on Code

Update elfio.hpp

Serge Lamikhov-Center committed [6fc23e] on Code

Increase version number for future release

Serge Lamikhov-Center committed [974e12] on Code

Rewrite append_data() to call insert_data()

Serge Lamikhov-Center committed [b2901a] on Code

Add missed implementation function for insert_data()

Serge Lamikhov-Center committed [e53398] on Code

Add insert_data() to section

Serge Lamikhov-Center committed [d00cc3] on Code

Switch to a newer 'googletest' archive

Serge Lamikhov-Center committed [c7cba1] on Code

VSCode settings update

Serge Lamikhov-Center committed [a62b29] on Code

Generate output of compile commands during generation

Serge Lamikhov-Center committed [259da3] on Code

Remove dispersed 'noexcept' specifier

Serge Lamikhov-Center committed [413b13]

Revert the change of the previous commit

Serge Lamikhov-Center committed [a52ccc]

tests: allow using system gtest copy

Serge Lamikhov-Center committed [a04810]

Don't build tests by default. Set ELFIO_BUILD_TESTS=ON

ELFIO released /ELFIO-sources/ELFIO-3.11/elfio-3.11.zip

ELFIO released /ELFIO-sources/ELFIO-3.11/elfio-3.11.tar.gz

ELFIO released /Release_3.11/elfio-3.11.zip

ELFIO released /Release_3.11/Release 3.11.zip

ELFIO released /Release_3.11/elfio-3.11.tar.gz

ELFIO released /Release_3.11/Release 3.11.tar.gz

Serge Lamikhov-Center committed [d8b71e]

Make more const variables

Serge Lamikhov-Center committed [6c5f34]

Add tests for lazy load

Serge Lamikhov-Center committed [9827ea]

Implement 'lazy' load for sections

Serge Lamikhov-Center committed [4320ea]

'noexept' added to upper level API members

Serge Lamikhov-Center committed [94505d]

Add 'lazy' load for own opened streams

Serge Lamikhov-Center committed [eeb00b]

Initial attempt for lazy load - segment loading

Serge Lamikhov-Center committed [ad8b64]

Lazy load segment data - load data upon request

Serge Lamikhov-Center committed [ef56f3]

Remove redundant member initialization

Serge Lamikhov-Center committed [705a91]

Use const referencies in set_xxx arguments

Serge Lamikhov-Center committed [8409f2]

Remove output to std::cerr

Serge Lamikhov-Center committed [755f81]

Generilize the section compression calls

Serge Lamikhov-Center committed [760826]

Externalize zlib dependency

Serge Lamikhov-Center committed [ac542c]

Add support for writing RPL/RPX

Serge Lamikhov-Center committed [049858]

fix mismatched allocator warning

Serge Lamikhov-Center committed [582d92]

Add support for reading Wii U RPX/RPL