Hopefully this stops .depends.mk from being generated more than
necessary, as presumably the fact that compile and simulator both add
new files to build_dir (and Verilog_RTL for Verilator) causes the
timestamp to change and thus make to think .depends.mk is stale.
The default was erroneously changed, causing P3 builds to have smaller
caches, so switch it back. The RVFI-DII builds override this with a TEST
configuration anyway now.
This one has the advantage of being able to be called with the same
flags as bsc, rather than needing to pass things through special
environment variables. As a result, revert all our changes to dealing
with BSC_COMPILATION_FLAGS (some of this diff therefore looks strangely
formatted, but it's to match upstream verbatim, and should be left that
way to minimise diffs and avoid conflicts).
lint_off -rule is a very new feature that requires Verilator v4.026
released in Jan 2020, and is thus not in Ubuntu 18.04. Any breakage with
newer versions should be fixed in some other backwards-compatible way.
This includes renaming Fifo.bsv to Fifos.bsv to account for a case insensitive file system which confuses this library with FIFO.bsv.
Also this includes an update of the verilator flags that are needed for modern verilator.
Finally, some verilator flag changes for building with LLVM.
Previously, the request went out into the fabric, and we were relying
on the fabric returning an error response. Some fabrics don't do this
reliably, so this removes that reliance on the fabric.
Now able to run multiple ISA tests in a single simulation run
connected to remote debugger DSharp, using either hart_reset or
ndm_reset between tests to bring the system back into reset state.
All Debug Module commands working:
- dm_reset, hart_reset, ndm_reset
- break (set breakpoint)
- step
- continue (until breakpoint of 'halt' command)
- halt
- read/write GPR, FPR, CSR, memory
- elf_load
