readme.md

The Depth Programming Language

a Toy Infrastructure of executable program from scratch.
Depth can compile depth-lang, assemble x86_64 assembly,
link a object file, load virtual memory by --run.

Details

compile package

• translate AST to three-address code
• depth-lang -> lex -> parse -> sema -> transIR -> liveness -> codegen -> x86_64 asm
• can emit LLVM-IR with --emit-llvm flag.

assemble package

• a assembler which can assemble x86_64 assembly and generate ET_REL object file.

link package

• a static linker
• can link a objectfile
• this linker can resolve symbols, determine entry point.

load package

• a loader implemented in user space.
• execute a static-linked binary with --run flag.
• don't use execve(2) syscall.

readelf

• a analyzer which can be used as GNU readelf.
• --readelf [-a/-h/-r/-l/-S/-s/-d/--debug]
• can analyze self-desined debug informations with --debug flag

checksec

• a checker which can detect some security-mechanisms are in a binary.
  • RELRO
  • NX-bit( stack execution )
  • stack protector( canary )
  • PIE
  • DT_RPATH
  • DT_RUNPATH

Author's Profile

Profile

• screenName: Drumato
• Team: IPFactory / OtakuAssembly
• Language: Rust/C/Haskell/Zen
• Editor: Neovim
• Occupation: Student
• Interests: compiler/assembler/linker/OS/binary analysis(esp ELF)/ all low-level programming