GNU / Newlib C/C++ Toolchain build for PSX

This repository contains scripts that build:

Binutils (as, ld, binary utilities, etc.)
GCC Stage 1
Newlib
GCC Stage 2
PSn00bSDK with newlib (instead of its own libc)

targeting the Sony PlayStation (PSX / PSone, etc...) by default. This is early / in-progress work. Initially I started putting it together because I planned to port a C++ GDB RSP server to the playstation, but found the existing toolchains don't have good coverage of C++ support. I'm not sure I'll do that now, but I still think that a Newlib-based C/C++ (or Fortran, and other GCC frontends, if of interest in future) could be interesting.

Current status

All toolchain components build successfully, and the hello world example from PSn00bSDK builds and appears to execute correctly on ePSXe. The hello world example converted to C++ and using the STL (creating and traversing a vector) also works correctly.

Further testing is needed to establish what does and doesn't work more fully.

Cloning and building

To clone:

export PSX_TOOLCHAIN_DIR=`pwd`/psx-toolchain
git clone git@github.com:gmarkall/psx-toolchain.git
cd ${PSX_TOOLCHAIN_DIR}
./clone-all.sh

To build:

./build-psx.sh

Once building is completed, add ${PSX_TOOLCHAIN_DIR}/../install-psx/bin to your PATH.

Building the hello example from PSn00bSDK

Run make in PSn00bSDK/examples/beginner/hello. The resulting hello.exe should be executable in the normal way.

To do

An unsorted wishlist of ideas:

Test the toolchain / debug any issues preventing execution of generated code on hardware or an emulator.
Add PlayStation-specific linker script and configure GCC to automatically use it (psx.ld from impiaaa).
Add support for PlayStation-specific instructions to binutils.
Setup testsuite runs (Binutils, GCC compilation, Newlib)
Setup execution tests (either using emulator or PSX serial)
Add build of the Bristol / Embecosm Embedded Benchmark Suite (BEEBS) for code size evaluation / optimization.

Origin of this repository

This is forked from The Embecosm RISC-V toolchain repository. The original README can be found in [README.original].