/elfloader

Primary LanguageRust

Elfloader library for the Rust programming language.

This library is going to help you load .o file into your system and make you easier to use the global functions and data in this ELF file.

Compile

1. rustup override set nightly
2. cargo -Z build-std=core,alloc build [--release]

OR

cargo build [--release]

Tip

We can just simply use cargo build [--release] because of rust-toolchain and .cargo/config.toml, then C-compatible static library libelfloader.a will be generated in directory target/<arch>/[debug|release] and I have also offered the C header file in include for detail.

How it do

Load

  1. load elf header and section headers into memory for Analyze
  2. get section size and alignment information from section headers for Allocation
  3. calculate the required size and align, and then Allocate memories
  4. load .text,.data,.bss,.rodata section into memory
  5. load symtab through section header and Resolve all symbols' value
  6. read relatab and then Relocate symbols which in target section
  7. now the code can be executed normaly