# Vortex Codebase

The directory/file layout of the Vortex codebase is as followed:

- `hw`:     
  - `rtl`: hardware rtl sources    
    - `core`: core pipeline
    - `cache`: cache subsystem
    - `mem`: memory subsystem
    - `fpu`: floating point unit
    - `interfaces`: interfaces for inter-module communication
    - `libs`: general-purpose RTL modules    
  - `syn`: synthesis directory
    - `altera`: Altera synthesis scripts
    - `xilinx`: Xilinx synthesis scripts    
    - `synopsys`: Synopsys synthesis scripts
    - `modelsim`: Modelsim synthesis scripts
    - `yosys`: Yosys synthesis scripts
  - `unit_tests`: unit tests for some hardware components
- `runtime`: host runtime software APIs
  - `include`: Vortex driver public headers
  - `stub`: Vortex stub driver library
  - `opae`: software driver that uses Intel OPAE API with device targets=fpga|asesim|opaesim
  - `xrt`: software driver that uses Xilinx XRT API with device targets=hw|hw_emu|sw_emu
  - `rtlsim`: software driver that uses rtlsim simulator
  - `simx`: software driver that uses simX simulator
- `kernel`: GPU kernel software APIs
  - `include`: Vortex runtime public headers
  - `linker`: linker file for compiling kernels
  - `src`: runtime implementation
- `sim`: 
  - `opaesim`: Intel OPAE AFU RTL simulator
  - `rtlsim`: processor RTL simulator
  - `simX`: cycle approximate simulator for vortex
- `tests`: tests repository.
  - `riscv`: RISC-V conformance tests
  - `kernel`: kernel tests
  - `regression`: regression tests  
  - `opencl`: opencl benchmarks and tests
- `ci`: continuous integration scripts
- `miscs`: miscellaneous resources.