{"id":15398617,"url":"https://github.com/cr0a3/formatic","last_synced_at":"2025-07-05T09:35:06.034Z","repository":{"id":232063293,"uuid":"782117431","full_name":"Cr0a3/Formatic","owner":"Cr0a3","description":"A easy to use Coff/Elf/Macho object file 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Formatic\n\nA libary for creating object files\n\n## Example\n\n```rust\nuse formatic::{Arch, BinFormat, Decl, Endian, Link, ObjectBuilder, Scope};\n\npub fn main() -\u003e Result\u003c(), Box\u003cdyn std::error::Error\u003e\u003e {\n let mut obj = ObjectBuilder::new(\"test.o\");\n\n obj.decls(vec![\n (\"callme\", Decl::Function(Scope::Import)),\n (\"call\", Decl::Function(Scope::Export)),\n (\"data\", Decl::Data(Scope::Export)),\n ]);\n\n obj.define(\n \"call\",\n vec![\n 0xF3, 0x0F, 0x1E, 0xFA, // endbr64\n 0x55, // push rbp\n 0x48, 0x89, 0xE5, // mov rbp, rsp\n 0xE8, 0x00, 0x00, 0x00, 0x00, // call callme\n 0x5D, // pop rbp\n 0xC3, // ret\n ],\n );\n\n obj.define(\"data\", \n b\"Hello World\".into()\n );\n\n obj.link(Link {\n from: \"call\".into(),\n to: \"callme\".into(),\n at: 9,\n });\n\n obj.write(BinFormat::host(), Arch::host(), Endian::host())?;\n\n Ok(())\n}\n```\n\nWhich gives the expected output:\n```bash\ncargo run --example simple\nbingrep test.o\n```\n\n```\nELF REL X86_64-little-endian @ 0x0:\n\ne_phoff: 0x0 e_shoff: 0x150 e_flags: 0x0 e_ehsize: 64 e_phentsize: 0 e_phnum: 0 e_shentsize: 64 e_shnum: 7 e_shstrndx: 6\n\nProgramHeaders(0):\n Idx Type Flags Offset Vaddr Paddr Filesz Memsz Align \n\nSectionHeaders(7):\n Idx Name Type Flags Offset Addr Size Link Entsize Align \n 0 SHT_NULL 0x0 0x0 0x0 0x0 0x0 \n 1 .text.call SHT_PROGBITS ALLOC EXECINSTR 0x40 0x0 0x10 0x0 0x10 \n 2 .rela.text.call SHT_RELA INFO_LINK 0xf8 0x0 0x18 .symtab(4) 0x18 0x8 \n 3 .rodata.value SHT_PROGBITS ALLOC 0x50 0x0 0xb 0x0 0x10 \n 4 .symtab SHT_SYMTAB 0x60 0x0 0x78 .strtab(5) 0x18 0x8 \n 5 .strtab SHT_STRTAB 0xd8 0x0 0x1a 0x0 0x1 \n 6 .shstrtab SHT_STRTAB 0x110 0x0 0x39 0x0 0x1 \n\nSyms(5):\n Addr Bind Type Symbol Size Section Other \n 0 LOCAL NOTYPE 0x0 0x0 \n 0 LOCAL FILE test.o 0x0 ABS 0x0 \n 0 GLOBAL NOTYPE callme 0x0 0x0 \n 0 GLOBAL FUNC call 0x10 .text.call(1) 0x2 \n 0 GLOBAL OBJECT value 0xb .rodata.value(3) 0x2 \n\nDyn Syms(0):\nDynamic Relas(0):\n\nDynamic Rel(0):\n\nPlt Relocations(0):\n\nShdr Relocations(1):\n .text.call(1)\n 9 X86_64_PLT32 callme+-4\n\n\nDynamic: None\n\n\nLibraries(0):\n\nSoname: None\nInterpreter: None\nis_64: true\nis_lib: false\nlittle_endian: true\nentry: 0\n\n```\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fcr0a3%2Fformatic","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fcr0a3%2Fformatic","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fcr0a3%2Fformatic/lists"}