rsas

• rsas is a toy assembler targeting x64 Linux

Usage

• rsas source.s will assemble source.s into a Linux ELF64 object file. The output path can be specied with the -o argument, defaulting to a.out

Trying it out

• Assemble, link and demo a simple cat implementation on a Linux x64 host

cargo install --path .

rsas as-examples/cat.s -o cat.o
ld -o rsas-cat cat.o

echo 'aaa' > a.txt
echo 'bbb' > b.txt
./rsas-cat a.txt b.txt
# Output:
# aaa
# bbb

Features

• AT&T assembly syntax
• No Cargo dependencies
• Supports global and local symbols
• Supports multiple types of relocations