2 releases
0.0.2 | Oct 3, 2023 |
---|---|
0.0.1 | Oct 1, 2023 |
#662 in Build Utils
40KB
845 lines
Contains (ELF exe/lib, 1KB) test.o
Easy read/write ELF 32/64 relocatibles/executables/dynamics
This crate is designed to use with orecc-back. However it's completely standalone. It doesn't even have dependencies!
Work in progress: [x] Writing ELFs: segments [] Writing ELFs: sections [] Reading ELFs: segments [] Reading ELFs: sections
lib.rs
:
Easy read/write ELF 32/64 relocatibles/executables/dynamics
To read an elf file:
let mut file = std::fs::File::open("test.o").unwrap();
dbg!(orecc_elf::ELF::<u64>::read(&mut file));
To write an elf file (source: https://www.youtube.com/watch?v=XH6jDiKxod8):
let mut file = std::fs::File::create("test.o").unwrap();
// An x86 program that just exits
let data = [
0xB8, 0x01, 0x00, 0x00, 0x00,
0xBB, 0x00, 0x00, 0x00, 0x00,
0xCD, 0x80,
];
orecc_elf::ELF::<u32>::new(
orecc_elf::Ident::new(
orecc_elf::Class::ELF32,
orecc_elf::ByteOrder::LSB,
orecc_elf::ABI::None,
0,
),
orecc_elf::Type::Exec,
orecc_elf::Machine::X86,
true,
vec![
orecc_elf::SegmentTemplate::new(
orecc_elf::SegmentType::Load,
data.to_vec(),
data.len() as _,
orecc_elf::SegmentFlags::Readable as u32 | orecc_elf::SegmentFlags::Executable as u32,
)
],
Vec::new(),
)
.unwrap()
.write(&mut file)
.unwrap();
x86_64 version:
let mut file = std::fs::File::create("test.o").unwrap();
// An x86_64 program that just exits
let data = [
0x48, 0xC7, 0xC0, 0x3C, 0x00, 0x00, 0x00,
0x48, 0xC7, 0xC7, 0x2A, 0x00, 0x00, 0x00,
0x0F, 0x05,
];
orecc_elf::ELF::<u64>::new(
orecc_elf::Ident::default(),
orecc_elf::Type::Exec,
orecc_elf::Machine::X86_64,
true,
vec![
orecc_elf::SegmentTemplate::new(
orecc_elf::SegmentType::Load,
data.to_vec(),
data.len() as _,
orecc_elf::SegmentFlags::Readable as u32 | orecc_elf::SegmentFlags::Executable as u32,
)
],
Vec::new(),
)
.unwrap()
.write(&mut file)
.unwrap();
Dependencies
~25KB