| #if 0 | |
| ifneq ($(shell grep -a -h -i microsoft /proc/version),) | |
| # // For use on Windows (WSL) with cygwinX | |
| # // Requires xinit, xauth and xhost probably | |
| # // Start the X11 server with `path\to\cygwin64\bin\run.exe --quote /usr/bin/bash.exe -l -c "cd; exec /usr/bin/startxwin -- +iglx -listen tcp"` | |
| # // If you get "Authorization required, but no authorization protocol specified" | |
| # // then try running `DISPLAY=:0.0 xhost +` in the cygwin terminal after | |
| # // starting the X11 server. | |
| DISPLAY = "`cat /etc/resolv.conf | grep nameserver | awk '{ print $$2 }'`:0.0" | |
| LIBGLARGS = LIBGL_ALWAYS_INDIRECT=1 LIBGL_ALWAYS_SOFTWARE=1 |
flowmap pass.
This document was originally written several years ago. At the time I was working as an execution core verification engineer at Arm. The following points are coloured heavily by working in and around the execution cores of various processors. Apply a pinch of salt; points contain varying degrees of opinion.
It is still my opinion that RISC-V could be much better designed; though I will also say that if I was building a 32 or 64-bit CPU today I'd likely implement the architecture to benefit from the existing tooling.
Mostly based upon the RISC-V ISA spec v2.0. Some updates have been made for v2.2
The RISC-V ISA has pursued minimalism to a fault. There is a large emphasis on minimizing instruction count, normalizing encoding, etc. This pursuit of minimalism has resulted in false orthogonalities (such as reusing the same instruction for branches, calls and returns) and a requirement for superfluous instructions which impacts code density both in terms of size and
| import contextlib | |
| @contextlib.contextmanager | |
| def lennyface(): | |
| global print | |
| oldprint = print | |
| def new_print(*args, **kwargs): | |
| #newargs = [a.replace(' ', '( ͡° ͜ʖ ͡°)') for a in args] | |
| args = list(args) |