Error when used with VSCode and Teroshdl

[BharathS11]

Hi, When I use yowasp to generate netlist with Teroshdl and vscode I get the following error. Please take a look at the attached file. Thank you netlist_error.log

[whitequark]

Okay, there are several separate issues here:

• First, absolute paths currently don't work on Windows. I haven't used TerosHDL but check if you can get it to pass relative paths to YoWASP. (This is still a bug in YoWASP, just one that might not be trivial to address.)
• Second, there's infinite recursion in shutil.rmtree (called from tempfile.TemporaryDirectory destructor) that happens only when the first issue is triggered. This is Python bug #35144, fixed in https://github.com/python/cpython/pull/24793 (not in a release yet).

[BharathS11]

Hi, Thanks for responding. TerosHDL developers updated the tool to use relative path The following commands work

yowasp-yosys -p "read_verilog -sv dsp\rtl\dsp_xcc_v2.v; proc; opt; write_json .teroshdl_yosys_output.json; stat"
yowasp-yosys -p "read_verilog -sv .\dsp\rtl\dsp_xcc_v2.v; proc; opt; write_json .teroshdl_yosys_output.json; stat" 

but this is what TerosHDL calls and doesn't work yowasp-yosys -p "read_verilog -sv ..\..\..\Documents\Projects\test\frontend\dsp\rtl\dsp_xcc_v2.v; proc; opt; write_json C:\Users\bhara\.teroshdl_yosys_output.json; stat"

I think the doubles quotes cause the issue.

[whitequark]

Can you ask TerosHDL developers to contact me directly regarding this issue? (In this GitHub issue, by email, whichever is more convenient.) Then we can work something out.

[whitequark]

In commit 4ae03d98ee8175a65e9eb7eb736aa15120db9457 I've changed the path handling so that on Windows, absolute and relative paths with any components would work. (It also improves relative path handling on *nix.) Note that on Windows, paths must be delimited by forward slashes, /, rather than backward slashes, \\; this is due to the way WASI implements path handling.

You can install YoWASP Yosys built from this commit with:

pip install -i https://test.pypi.org/simple/ yowasp-yosys==0.9.post5623.dev232

[whitequark]

@BharathS11 Can you please confirm whether you were able to get the updated package to work?

[whitequark]

yowasp-yosys -p "read_verilog -sv ..\..\..\Documents\Projects\test\frontend\dsp\rtl\dsp_xcc_v2.v; proc; opt; write_json C:\Users\bhara\.teroshdl_yosys_output.json; stat"

Both of these paths should work since commit https://github.com/YoWASP/yosys/commit/4ae03d98ee8175a65e9eb7eb736aa15120db9457, closing. Please comment if there are still any issues.

[qarlosalberto]

I'm improving the support for yowasp-yosys in TerosHDL. Currently, is it possible to use absolute paths in Windows and Linux? Thanks.

[whitequark]

Sure. You have to use / instead of \ though.

[qarlosalberto]

Great!!

I'm doing some tests. This command works fine:

yowasp-yosys -p 'read_verilog -sv /home/carlos/repo/vscode-terosHDL/packages/colibri/tests/yosys/helpers/verilog/mylib/counter_logic.v; read_verilog -sv /home/carlos/repo/vscode-terosHDL/packages/colibri/tests/yosys/helpers/verilog/counter_top.v; ; hierarchy -top counter_top; proc; ; write_json /home/carlos/hola.json; stat'

But not this command:

yowasp-yosys -p 'read_verilog -sv /home/carlos/repo/vscode-terosHDL/packages/colibri/tests/yosys/helpers/verilog/mylib/counter_logic.v; read_verilog -sv /home/carlos/repo/vscode-terosHDL/packages/colibri/tests/yosys/helpers/verilog/counter_top.v; ; hierarchy -top counter_top; proc; ; write_json /tmp/hola.json; stat'

There aren't errors. But in the second command yowasp-yosys doesn't create the file /tmp/hola.json. I am doing something wrong?

[whitequark]

The /tmp subtree is internally mounted to a temporary directory created just for this purpose, as it is unconditionally used by Yosys for e.g. running abc. The /tmp directory is hardcoded in wasi-libc sources so you'll need to pick a different temporary location.

The same is true of /share, for different reasons.

[qarlosalberto]

Ahh okok, thanks!! I will choose other path.