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Activity

From 09/07/2019 to 10/06/2019

10/06/2019

05:25 PM Issue #1521 (Resolved): Add --protect-ids to enhance --protect-lib obfuscation
Pushed to git towards 4.022.
Todd, you'll want to presumably make this new option also turn on when --protect-lib ...
Wilson Snyder
01:30 PM Issue #1521: Add --protect-ids to enhance --protect-lib obfuscation
Calling it --protect-ids; nearly there.
Wilson Snyder
02:56 PM Issue #1535 (Assigned): Double quotes in -f option file
Great, awaiting next patch.
Wilson Snyder
02:36 PM Issue #1544 (Confirmed): Improve readme
The existing readme document is really an install document.
Readme should be more modern, github-like. This probab...
Wilson Snyder
02:33 PM Issue #1489: Python support for Verilated designs
Note examples have been renamed, see last msg in bug1363.
Wilson Snyder
02:32 PM Issue #1363 (Assigned): CMake support
I renamed the old examples to have "make" in the name so users can tell make vs cmake. Can you please rename yours t... Wilson Snyder
02:08 PM Issue #1469 (Closed): VPI module
In 4.020. Thanks for reporting this; if there are additional related problems, please open a new issue.
Wilson Snyder
02:08 PM Issue #1536 (Closed): Misoptimization of case with string compares
In 4.020. Thanks for reporting this; if there are additional related problems, please open a new issue.
Wilson Snyder
02:08 PM Issue #1528 (Closed): VPI: Let port vars return variable type, not vpiPort
In 4.020. Thanks for reporting this; if there are additional related problems, please open a new issue.
Wilson Snyder
02:07 PM Issue #1525 (Closed): Improve error report when erroneously using interface in expression
In 4.020. Thanks for reporting this; if there are additional related problems, please open a new issue.
Wilson Snyder
02:07 PM Issue #1512 (Closed): Make callCbs public (again) and return if callbacks were called
In 4.020. Thanks for reporting this; if there are additional related problems, please open a new issue.
Wilson Snyder
02:07 PM Issue #1511 (Closed): Add --public-flat-rw flag
In 4.020. Thanks for reporting this; if there are additional related problems, please open a new issue.
Wilson Snyder
02:07 PM Issue #1510 (Closed): VPI: Get vpiType string
In 4.020. Thanks for reporting this; if there are additional related problems, please open a new issue.
Wilson Snyder
02:07 PM Issue #1509 (Closed): Fix variable cast in VPI
In 4.020. Thanks for reporting this; if there are additional related problems, please open a new issue.
Wilson Snyder
02:07 PM Issue #1507 (Closed): Linting error: backward indexing
In 4.020. Thanks for reporting this; if there are additional related problems, please open a new issue.
Wilson Snyder
02:07 PM Issue #1499 (Closed): Have V3EmitC::emitcSyms honor --output-split-cfuncs
In 4.020. Thanks for reporting this; if there are additional related problems, please open a new issue.
Wilson Snyder
02:07 PM Issue #1496 (Closed): Support additional file I/O functions $fseek, $ftell, $frewind
In 4.020. Thanks for reporting this; if there are additional related problems, please open a new issue.
Wilson Snyder
02:06 PM Issue #1494 (Closed): verilator 4.018 build fails at 'make test' in examples/hello_world_c
In 4.020. Thanks for reporting this; if there are additional related problems, please open a new issue.
Wilson Snyder
02:05 PM Verilator 4.020 Released
Verilator 4.020 2019-10-06
*** Support $fseek, $ftell, $frewind, bug1496. [Howard Su]
*** Add --public-flat...
Wilson Snyder
01:23 PM Issue #1543 (Feature): Improve performance of icache
Wilson Snyder
01:14 PM Issue #1543 (Feature): Improve performance of icache
Feature tracking bug.
The biggest performance cost presently is icache pressure. We should figure out techniques ...
Wilson Snyder
01:05 PM Issue #1542 (Feature): Improve performance of bit operations by vectorizing
Feature tracking bug.
Verilator at present only vectorizes some very simple assignments of the form
assign a...
Wilson Snyder
01:01 PM Issue #1541 (Feature): Support unpacked structs
Feature tracking bug.
As a step towards class support (bug377), support unpacked structures.
Wilson Snyder
01:00 PM Issue #1540 (Feature): Improve internal elaboration algorithm
Feature tracking bug.
Verilator implements elaboration using an algorithm that goes back to its birth and predates...
Wilson Snyder
12:54 PM Issue #1539 (Feature): Improve internals of inliner
Feature tracking bug.
The current module inliner code works by operating on modules before the complete scoped hie...
Wilson Snyder
12:34 PM Issue #1538 (Feature): Support full UVM parsing and XML dump
Feature tracking bug.
Currently Verilator parses a subset of SystemVerilog and reports many unsupported errors at ...
Wilson Snyder
12:31 PM Issue #1537 (Feature): Support FST structure tracing w/GTKwave
Feature tracking bug.
Currently Verilator dumps structs as packed values in FST. Ideally it would allow the user ...
Wilson Snyder

10/05/2019

05:40 PM Issue #1536: Misoptimization of case with string compares
Confirmed fixed. Thanks Wilson for the quick fix! Philipp Wagner
01:13 AM Issue #1489: Python support for Verilated designs
I'm getting confused by all the layers. Do you propose
1. cmake goes to master, 2. everything in pydpi?
Or 1. ...
Wilson Snyder

10/04/2019

11:42 PM Issue #1363: CMake support
Ok, thanks for rebasing. Looked through this again and a few things:
examples/cmake -> rename to examples/c...
Wilson Snyder
11:20 PM Issue #1363: CMake support
Note to self - this is: https://github.com/verilator/verilator/pull/2
Wilson Snyder
07:40 PM Issue #1363: CMake support
I've added a rebased version as a pull request on your new(?) github repo. I'm hoping we can get the CMake in at leas... Patrick Stewart
11:20 PM Issue #1489: Python support for Verilated designs
Note to self this is also https://github.com/verilator/verilator/pull/3 Wilson Snyder
11:03 PM Issue #1489: Python support for Verilated designs
I have added DPI support for Python in a pydpi branch.
These commits should go on top of the python branch.
(which ...
Maarten De Braekeleer
07:47 PM Issue #1489: Python support for Verilated designs
I've rebased this work onto master, added a couple of minor fixes and added coverage support here: https://github.com... Patrick Stewart
11:14 PM Issue #1536 (Resolved): Misoptimization of case with string compares
Thanks for the good test case. What's going on is when the case statement is getting optimized it treated the differ... Wilson Snyder
09:32 AM Issue #1536 (Closed): Misoptimization of case with string compares
I have (simplified) code like this:... Philipp Wagner

10/03/2019

09:38 AM Issue #1521: Add --protect-ids to enhance --protect-lib obfuscation
#4 makes sense to me. Naively, it seems that s/name()/nameHashed()/ in V3EmitC would be pretty close to what we need... Todd Strader

10/02/2019

10:48 PM Issue #1469: VPI module
bug1469-1 pushed.
Wilson Snyder
01:59 PM Issue #1469: VPI module
Hi,
sorry, even worse, I deleted the branch and the comment because I realized it could be done more elegantly: I ...
Stefan Wallentowitz
11:16 AM Issue #1469: VPI module
I suspect you forgot to push bug1469-1.
Wilson Snyder
01:58 AM Issue #1469 (Resolved): VPI module
Great, looks good now thanks for taking all the feedback.
Pushed to git towards eventual 4.020 release.
Wilson Snyder
04:15 PM Issue #1535: Double quotes in -f option file
Hi Wilson,
As for big-3 simulators, i have tested the following cases:...
Yves Mathieu
04:01 PM Issue #1535: Double quotes in -f option file
I acknowledge this and future contributions are made under the Developer Certificate of Origin (https://developercert... Yves Mathieu
03:07 PM Issue #1535 (AskedReporter): Double quotes in -f option file
Thanks for your issue & looking at how to fix this.
As the old comment noted, most other simulators don't support ...
Wilson Snyder
02:50 PM Issue #1535 (Assigned): Double quotes in -f option file
SystemVerilog allows string parameters.
Using -f option file should support quoted strings.
Please find, attached...
Yves Mathieu
02:04 AM Issue #1501: Support bind statements within generate blocks
Thanks!! It's not a show-stopper for us. Our workaround for anyone watching is to clock-gate based on the bind param... Dan Petrisko
01:59 AM Issue #1501: Support bind statements within generate blocks
Haven't forgotten about this. Got the exact case provided working, but based on where in the tree the bind is there's... Wilson Snyder

10/01/2019

10:51 AM Issue #1521: Add --protect-ids to enhance --protect-lib obfuscation
Got an experiment in place and realized changing v3Name to make this work
doesn't really work, as it currently adds ...
Wilson Snyder
10:45 AM Issue #1513 (Closed): CONTRIBUTING file, internals, and FAQ cleanup
Thanks all.
Wilson Snyder
10:06 AM Issue #1513: CONTRIBUTING file, internals, and FAQ cleanup
I've added a blurb in internals.adoc about the CI setup. Todd Strader
05:16 AM Issue #1469: VPI module
Hi again,
sorry, I shouldn't develop, test and prepare patches while running ORConf, branches got mixed up. Everyt...
Stefan Wallentowitz
01:53 AM Issue #1534 (Feature): Fuzzer script
This is much appreciated.
1. First legal stuff, do you agree what you attach and future contributions are open sou...
Wilson Snyder
12:50 AM Issue #1534: Fuzzer script
As far as I know there isn't an option to keep the inputs ASCII.
There is an option to use a collection of inter...
Eric Rippey
12:09 AM Issue #1534: Fuzzer script
Sweet. Always wanted to try AFL but never got to it.
Ran it for 2 minutes (which know is nothing the the grand sch...
Wilson Snyder
12:09 AM Issue #1533 (Closed): Fuzzer: buffer overflow detected
Fixed in git. As this is unlikely to be hit by users, closing immediately rather than waiting for a release.
Wilson Snyder

09/30/2019

11:48 PM Issue #1530 (Closed): Fuzzer: terminate called after throwing an instance of 'std::length_error'
Fixed in git. As this is unlikely to be hit by users, closing immediately rather than waiting for a release.
Wilson Snyder
08:06 PM Issue #1530 (Closed): Fuzzer: terminate called after throwing an instance of 'std::length_error'
Running the attached test case with "verilator_bin --cc 2.v" produces:... Eric Rippey
11:36 PM Issue #1531 (Duplicate): Fuzzer: Hang on short testcase
Same problem/solution as bug1530.
Wilson Snyder
08:16 PM Issue #1531 (Duplicate): Fuzzer: Hang on short testcase
Running "verilator_bin --cc 3.v" with the attaced testcase does not terminate in a reasonable amount of time. It doe... Eric Rippey
11:22 PM Issue #1529 (Closed): Fuzzer: Sefault on pattern testcase
Fixed in git. As this is unlikely to be hit by users, closing immediately rather than waiting for a release. Wilson Snyder
10:47 PM Issue #1529: Fuzzer: Sefault on pattern testcase
I have filed a bug with instructions on how to run the fuzzer here:
https://www.veripool.org/issues/1534-Verilator...
Eric Rippey
09:21 PM Issue #1529: Fuzzer: Sefault on pattern testcase
I take it this and the other issues are from a fuzzer? Which one? Would you be willing to contribute the configurat... Wilson Snyder
07:59 PM Issue #1529 (Closed): Fuzzer: Sefault on pattern testcase
Running "verilator_bin --cc 1.v" with the attached testcase produces:... Eric Rippey
10:50 PM Issue #1532 (Closed): Fuzzer: fatal flex scanner internal error--end of buffer missed
Thanks for the testcase. Flex EOF detection wasn't properly handled.
Fixed in git. As this is unlikely to be hit b...
Wilson Snyder
08:32 PM Issue #1532 (Closed): Fuzzer: fatal flex scanner internal error--end of buffer missed
Running "verilator_bin --cc 5.v" produces:... Eric Rippey
10:47 PM Issue #1534 (Closed): Fuzzer script
In this bug: https://www.veripool.org/issues/1529-Verilator-Sefault-on-short-testcase
There was a request to file ...
Eric Rippey
08:43 PM Issue #1533 (Closed): Fuzzer: buffer overflow detected
Running the attached testcase with "verilator_bin --cc 6.v" produces:... Eric Rippey

09/29/2019

09:14 PM Issue #1513 (Assigned): CONTRIBUTING file, internals, and FAQ cleanup
Sigh. Keeping this open as a reminder.
Wilson Snyder
09:14 PM Issue #1513 (Closed): CONTRIBUTING file, internals, and FAQ cleanup
Committed CONTRIBUTING.adoc and conversion of internals.pod to internals.adoc.
Switched to asciidoc over markdown ...
Wilson Snyder
06:49 PM Issue #1469: VPI module
Wilson Snyder wrote:
> Before, and worse after. I thought my small changes might have done it, but seemed to get th...
Stefan Wallentowitz
06:44 PM Issue #1469: VPI module
Before, and worse after. I thought my small changes might have done it, but seemed to get the same with the patch yo... Wilson Snyder
06:25 PM Issue #1469: VPI module
Thanks, Wilson. Just to confirm: The tests are broken with the dangling pointer check in and not before, right? Stefan Wallentowitz
06:01 PM Issue #1469: VPI module
If you want to post github links the easiest thing to do is make a personal branch (e.g. called bug1469) and point to... Wilson Snyder
03:11 PM Issue #1469: VPI module
Hi,
thanks, I was thinking the same, but not sure about the impact. As people probably rely on name() returning th...
Stefan Wallentowitz
03:25 PM Issue #1528: VPI: Let port vars return variable type, not vpiPort
Just for completeness. When it return vpiPort, the proper sequence would be something like:... Stefan Wallentowitz

09/28/2019

10:58 PM Issue #1513: CONTRIBUTING file, internals, and FAQ cleanup
Todd, Good point, I agree we should mention Travis, can you please suggest what we should add? I suggest at bullet p... Wilson Snyder
10:34 PM Issue #1513: CONTRIBUTING file, internals, and FAQ cleanup
This all looks good to me. I run perldoc on the .pod files, but agree that it is probably best to move them to .md t... Todd Strader
03:42 PM Issue #1513: CONTRIBUTING file, internals, and FAQ cleanup
FAQ cleanup seemed obvious improvement, wiki now points at most recent release's bin/verilator FAQ.
Wilson Snyder
03:08 PM Issue #1513 (Assigned): CONTRIBUTING file, internals, and FAQ cleanup
1. Currently the internals.pod file is used to make HTML/PDF/etc files. I doubt these are useful, is anyone using th... Wilson Snyder
04:11 PM Issue #1469: VPI module
Ok, only remaining problem I think is the new decodeName function by doing a strdup will leak more on each call. One... Wilson Snyder
03:18 PM Issue #1469: VPI module
Hi,
thanks a lot for pointing it out. I discovered that icarus (and other simulators I assume) actually return the...
Stefan Wallentowitz
01:11 AM Issue #1469: VPI module
Thanks, very close.
+++ b/test_regress/t/t_vpi_module.cpp
+ CHECK_RESULT_CSTR(name, "t.mod_a.mod_c__02E"...
Wilson Snyder

09/27/2019

04:45 PM Issue #1469: VPI module
Hi,
thanks for your input. I have updated the patch with your input and also test the escaped identifier.
Best,...
Stefan Wallentowitz
12:36 PM Issue #1490: Add an option to create a DPI protected library
Since you're neutral on lib vs library, if we use --protect-lib I believe your paper/this feature will be top google ... Wilson Snyder
08:37 AM Issue #1490: Add an option to create a DPI protected library
As discussed, I sliced of the XSim support and new AST nodes as two separate commits and pushed them.
> Multitop s...
Todd Strader
03:36 AM Issue #1490: Add an option to create a DPI protected library
Multitop should make just one top V/Mk file, I still think this will work fine.
Wilson Snyder
04:02 AM Issue #1528 (Resolved): VPI: Let port vars return variable type, not vpiPort
Not sure I follow what this helps, but don't see what it breaks either and tests don't cover it, so will assume it he... Wilson Snyder

09/26/2019

08:18 PM Issue #1490: Add an option to create a DPI protected library
I'm ambivalent towards the choice between --dpi-lib and --dpi-library but I do think one of those would be better tha... Todd Strader
12:12 PM Issue #1490: Add an option to create a DPI protected library
>I'm going to suggest --protect-lib.
Like that, let's sleep on it.
Is protect-library better or worse? I'm alwa...
Wilson Snyder
11:17 AM Issue #1490: Add an option to create a DPI protected library
Also, re: testing this specific error:... Todd Strader
07:34 AM Issue #1490: Add an option to create a DPI protected library
> perhaps the makefile by default should make both versions?
Yeah, the only reason I have this as two separate Ver...
Todd Strader
04:51 AM Issue #1490: Add an option to create a DPI protected library
Also . . .
> The generated code seems wrongly indented (not indented) for some reason.
Isn't this because I'm u...
Todd Strader
04:25 AM Issue #1490: Add an option to create a DPI protected library
Thanks again. Also, regarding names, I hate naming things. And yeah, I'm already pretty sure that --dpi-protect is ... Todd Strader
01:41 AM Issue #1490: Add an option to create a DPI protected library
>Is dpiProtectLibName() the same thing as the new v3Global.opt function you're suggesting? Does >dpiProtectLibName() ... Wilson Snyder
01:00 PM Issue #1528 (Closed): VPI: Let port vars return variable type, not vpiPort
VerilatedVpioVar does not provide any of the other properties of the vpiPort, but those of the referenced "vpiLowConn... Stefan Wallentowitz
12:39 PM Issue #1470: VPI systemtf
The first part is much easier than I thought, because @Verilated::fatalOnVpiError(false);@ does the job. Now I need t... Stefan Wallentowitz
11:55 AM Issue #1521: Add --protect-ids to enhance --protect-lib obfuscation
Ease of use is a good point so agree --dpi-protect (or whatever renamed) should set --protect-symbols by default; if ... Wilson Snyder
04:09 AM Issue #1521: Add --protect-ids to enhance --protect-lib obfuscation
Do you see uses for this beyond --dpi-protect? I'd imagine, but of course can't say for sure, that IP vendors wouldn... Todd Strader
02:44 AM Issue #1521: Add --protect-ids to enhance --protect-lib obfuscation
Proposed new flags to implement this feature for discussion:
--protect-symbols = When specified, Verilator wi...
Wilson Snyder
01:54 AM Issue #1525 (Resolved): Improve error report when erroneously using interface in expression
Thanks for your issue. I was unable to get the exact error message you did, but got other ugly messages when misusin... Wilson Snyder

09/25/2019

08:21 PM Issue #1490: Add an option to create a DPI protected library
Thanks for all the feedback. I've got a bunch of the items cleaned up and posted to my branch. But I've got a coupl... Todd Strader
12:15 AM Issue #1490: Add an option to create a DPI protected library
... think noe that you have AstText you can just hash those in the SV to fingerprint. Wilson Snyder
12:09 AM Issue #1490: Add an option to create a DPI protected library
Forgot another. The generated V should pass a fingerprint of the info used to make the V to the DPI create for checki... Wilson Snyder
07:04 AM Issue #1525 (Closed): Improve error report when erroneously using interface in expression
When an interface ("din" in this example) is erroneously used in an expression like this:... Bogdan Vukobratovic

09/24/2019

11:53 PM Issue #1490: Add an option to create a DPI protected library
Forgot one of your questions, it's "DESCR" "IPTION" as I have personal scripts that check every source file has a des... Wilson Snyder
11:51 PM Issue #1490: Add an option to create a DPI protected library
Good stuff. Review comments attached.
Main comment would be we should heave sensitivity lists based on what's need...
Wilson Snyder
04:05 PM Issue #1490: Add an option to create a DPI protected library
I believe this is ready to go now:
https://github.com/toddstrader/verilator-dev/tree/dpi-compile-ast2
A couple no...
Todd Strader
02:44 PM Issue #1522 (Feature): Support mutable top-level parameters for --protect-lib
Parameters that create data types or generate if/for subcells are unlikely to ever be "wire"able, but perhaps others ... Wilson Snyder
12:47 PM Issue #1522 (Feature): Support mutable top-level parameters for --protect-lib
This may also have applications outside of --dpi-protect. Possible solutions:
* Automatically convert parameters to...
Todd Strader
02:42 PM Issue #1521 (Feature): Add --protect-ids to enhance --protect-lib obfuscation
If anyone starts on this let me know, as I at some point might also take a look at it.
Wilson Snyder
12:41 PM Issue #1521 (Resolved): Add --protect-ids to enhance --protect-lib obfuscation
Signal names and some other design details are visible via library symbols and possibly strings. We can have Verilat... Todd Strader
02:41 PM Issue #1520 (Feature): Improve --protect-lib performance
Wilson Snyder
12:37 PM Issue #1520 (Feature): Improve --protect-lib performance
Some possibilities:
* Detect cones of logic and only fetch the outputs that are affected by a given input
* Detect ...
Todd Strader
02:41 PM Issue #1519 (Feature): Benchmark --protect-lib runtime
Wilson Snyder
12:34 PM Issue #1519 (Feature): Benchmark --protect-lib runtime
There's obviously overhead in shuttling data back and forth with --dpi-protect. We should use some large-ish design ... Todd Strader
02:41 PM Issue #1518 (Feature): Protect against --protect-lib Verilator runtime incompatibility
Wilson Snyder
12:16 PM Issue #1518: Protect against --protect-lib Verilator runtime incompatibility
Some items such as the mutexes for multithreading, tracing, VPI name lookup, and coverage are assumed to be common ac... Wilson Snyder
12:08 PM Issue #1518 (Feature): Protect against --protect-lib Verilator runtime incompatibility
Currently all --dpi-protect'ed modules and the top-level design share the same Verilator runtime symbols. Some optio... Todd Strader
02:40 PM Issue #1517 (Feature): Add support for additional simulators in --protect-lib
Wilson Snyder
12:02 PM Issue #1517 (Feature): Add support for additional simulators in --protect-lib
So far XSim has been tested and works with a shared library. We need to determine what we need to be able to build l... Todd Strader
02:40 PM Issue #1523 (Feature): Add waveform replay tool for --protect-lib
Would ideally like to see something that works on an arbitrary design without requiring --dpi-protect, and ideally us... Wilson Snyder
12:51 PM Issue #1523 (Feature): Add waveform replay tool for --protect-lib
When simulating with a --dpi-protect'ed module, the end user cannot see the internals and therefore a waveform captur... Todd Strader
02:24 PM Issue #1524 (New): Support sensitivity to DPI function outputs
I need to look into this more, but I believe that Verilator does schedule processes based on the outputs of DPI funct... Todd Strader

09/23/2019

11:27 PM Issue #1469: VPI module
Thanks for working on this. I think your general approach is fine.
I suggest you add a test where there's some bac...
Wilson Snyder
09:55 PM Issue #1469: VPI module
This has been more complicated than I hoped. Attached I am sending you my proposal for review. It is probably not the... Stefan Wallentowitz
10:44 PM Issue #1490: Add an option to create a DPI protected library
Thanks, I think this looks much better & reasonable. I'd suggest using AstComment where you can instead of text with... Wilson Snyder
06:35 PM Issue #1490: Add an option to create a DPI protected library
This is very much a WIP, but I want to make sure we're on the same page:
https://github.com/toddstrader/verilator-de...
Todd Strader
12:04 PM Issue #1511 (Resolved): Add --public-flat-rw flag
Thanks all.
Pushed to git towards eventual 4.020 release.
Wilson Snyder

09/21/2019

06:36 PM Issue #1514 (Feature): Switch for file to read public signals from
Agreed, and suggest this should be handled by adding a config file parse rule to the bottom of verilog.y.
Ideally ...
Wilson Snyder
05:47 PM Issue #1514 (Feature): Switch for file to read public signals from
We should have a switch that lets the user give a file with names of signals (including whitespaces) that are treated... Stefan Wallentowitz
06:26 PM Issue #1515 (Feature): VPI: Log all variables that were accessed
Wilson Snyder
05:49 PM Issue #1515 (Feature): VPI: Log all variables that were accessed
The idea is to add the capability to the VPI runtime to log all variable accesses in a format compatible with #1514. ... Stefan Wallentowitz
05:43 PM Issue #1513 (Closed): CONTRIBUTING file, internals, and FAQ cleanup
We should add a CONTRIBUTING file on toplevel that describes the required technical and legal steps to submit patches... Stefan Wallentowitz
05:41 PM Issue #1511: Add --public-flat-rw flag
Wilson Snyder wrote:
> Ok, given the trade-offs seems reasonable.
>
> If this starts getting a lot of use we migh...
Stefan Wallentowitz
12:51 PM Issue #1511: Add --public-flat-rw flag
Ok, given the trade-offs seems reasonable.
If this starts getting a lot of use we might want an option to at runti...
Wilson Snyder
01:24 PM Issue #1490: Add an option to create a DPI protected library
>It also slightly modifies the emitted Makefile, but I'm going to assume we're not going to represent the Makefile in... Wilson Snyder
11:45 AM Issue #1512 (Resolved): Make callCbs public (again) and return if callbacks were called
Your description seems reasonable. One reason why I was asking was if this should be documented in the main docs, bu... Wilson Snyder

09/20/2019

03:40 PM Issue #1470: VPI systemtf
Wilson Snyder wrote:
> Perhaps when suppressed this should be setting the error return code so vpi_chk_error returns...
Stefan Wallentowitz
03:32 PM Issue #1470: VPI systemtf
Perhaps when suppressed this should be setting the error return code so vpi_chk_error returns something sane e.g. lev... Wilson Snyder
02:30 PM Issue #1470: VPI systemtf
Okay, here is one that is equally hacky and elegant on both sides. Instead of making the symbol weak, how about just ... Stefan Wallentowitz
04:25 AM Issue #1470: VPI systemtf
Thanks, Wilson, I was already thinking about the issue with other compilers but only came up with LLVM :) I think it ... Stefan Wallentowitz
01:47 PM Issue #1512: Make callCbs public (again) and return if callbacks were called
Hi,
conceptually the VPI library is generic in cocotb and it used some init hooks to install the callbacks. But Ve...
Stefan Wallentowitz
01:30 PM Issue #1490: Add an option to create a DPI protected library
More questions about the in-AST refactor:
Currently "--dpi-protect secret" creates foo.sv and foo.cpp. It also sl...
Todd Strader
05:01 AM Issue #1511: Add --public-flat-rw flag
Thanks for your insights, I am a bit torn apart on this one. But I believe overall the usability wins in this case. T... Stefan Wallentowitz

09/19/2019

11:01 PM Issue #1512 (Assigned): Make callCbs public (again) and return if callbacks were called
I'm ok applying this conceptually, but do you think this is the API you really want to use instead of abstracting thr... Wilson Snyder
08:17 PM Issue #1512 (Closed): Make callCbs public (again) and return if callbacks were called
For the cocotb support we need VPI callbacks of all sorts. The access to callCbs() was public before but has not been... Stefan Wallentowitz
10:52 PM Issue #1511 (Assigned): Add --public-flat-rw flag
I really don't like expanding the userfullness use of public. There's two problems:
1. Users will probably set it...
Wilson Snyder
05:16 AM Issue #1511: Add --public-flat-rw flag
This is a compromise between --public (deprecated) and requiring the designer to add the comments. By restricting it ... Stefan Wallentowitz
05:04 AM Issue #1511 (Closed): Add --public-flat-rw flag
Hi,
the purpose of these patches is to add a new switch --public-flat-rw that changes the behavior as if /*verilat...
Stefan Wallentowitz
10:21 PM Issue #1470: VPI systemtf
Weak seems somewhat hacky, but I can live with hacky. You do however need to do not break non-GCC compilers e.g. MSV... Wilson Snyder
09:00 PM Issue #1470: VPI systemtf
Hi,
sorry, took much longer as I hoped to even look into it. Attached please find a first, rather trivial patch, t...
Stefan Wallentowitz

09/18/2019

04:24 PM Issue #1510 (Resolved): VPI: Get vpiType string
Great. Pushed to git for eventual release 4.020.
Wilson Snyder
11:45 AM Issue #1510: VPI: Get vpiType string
Patch updated with test. Actually I found vpi_var the better test as it tests vpi_get_str too. Stefan Wallentowitz
11:19 AM Issue #1510: VPI: Get vpiType string
Yes, I am at it right now. Sorry, slipped me :) Stefan Wallentowitz
11:18 AM Issue #1510 (Assigned): VPI: Get vpiType string
Thanks for the patch, makes sense, could you also please add a test to t_vpi_get.cpp or one of the other tests? If n... Wilson Snyder
11:09 AM Issue #1510 (Closed): VPI: Get vpiType string
vpi_get_str: Get vpiType string Stefan Wallentowitz
11:25 AM Issue #1509 (Resolved): Fix variable cast in VPI
Thanks for the good patch. Applied & pushed to git for eventual 4.016 release.
Wilson Snyder
11:14 AM Issue #1509: Fix variable cast in VPI
Updated patch for current HEAD Stefan Wallentowitz
10:00 AM Issue #1509 (Closed): Fix variable cast in VPI
Fix cast from Var to base type when getting handle in VPI Stefan Wallentowitz

09/17/2019

08:09 PM Issue #1507: Linting error: backward indexing
It worked fine. Thanks!
Hao Shi
07:17 PM Issue #1507: Linting error: backward indexing
Sorry, not having it in master was my fault, try again.
Wilson Snyder
06:55 PM Issue #1507: Linting error: backward indexing
Let me know if it is better to open a new issue, since it is unrelated topic.
I am on the master branch right now,...
Hao Shi
06:15 PM Issue #1507: Linting error: backward indexing
It's not released (until next monthish), use master branch, that is don't use any tag. Wilson Snyder
06:02 PM Issue #1507: Linting error: backward indexing
Wilson Snyder wrote:
> You can get it now from git, see the Install section. Typically releases (tarballs) are ever...
Hao Shi
05:25 PM Issue #1507: Linting error: backward indexing
You can get it now from git, see the Install section. Typically releases (tarballs) are every month or so. Wilson Snyder
04:45 PM Issue #1507: Linting error: backward indexing
Wilson Snyder wrote:
> Thanks for the report, simple enough to fix.
>
> Fixed in git towards 4.420.
Thanks for...
Hao Shi
01:18 AM Issue #1507 (Resolved): Linting error: backward indexing
Thanks for the report, simple enough to fix.
Fixed in git towards 4.420.
Wilson Snyder
12:58 AM Issue #1507 (Closed): Linting error: backward indexing
I think I met a false error in linting:
Slice selection '[2:2]' has backward indexing versus data type's '[0:3]'
Sl...
Hao Shi
02:53 PM Issue #1508 (NoFixNeeded): CI is failing on CPAN installs
OK, great. I didn't look closely enough at the log before, but now I see:... Todd Strader
01:28 PM Issue #1508: CI is failing on CPAN installs
Note CPAN listed Parallel::Forker but it didn't seem to find it in Travis. This morning I tried pushing a new Parall... Wilson Snyder
01:13 PM Issue #1508 (NoFixNeeded): CI is failing on CPAN installs
Travis jobs are failing while installing CPAN modules:... Todd Strader

09/15/2019

09:09 PM Issue #1506 (NoFixNeeded): Compile with uvm-systemc
UVM-SystemC as I understand it is just another library which should not care about regular SystemC verilated modules.... Wilson Snyder
07:15 PM Issue #1506 (NoFixNeeded): Compile with uvm-systemc
Is there any way or example to compile the verilator with uvm-systemc? SKY LAI

09/12/2019

11:14 PM Issue #1505 (WillNotFix): [Bug] cannot understand multi-dimensional array interfaces
Thanks for the report.
I created a test case and this is not supported in the two commercial simulators I could ch...
Wilson Snyder
10:24 PM Issue #1505: [Bug] cannot understand multi-dimensional array interfaces
Verilog-Perl fixed in version 3.468.
Wilson Snyder
02:45 PM Issue #1505 (Confirmed): [Bug] cannot understand multi-dimensional array interfaces
Agreed this is a mistake in translation of the IEEE grammar. Also applies to Verilog-Perl which will get fixed first.
Wilson Snyder
02:06 PM Issue #1505 (WillNotFix): [Bug] cannot understand multi-dimensional array interfaces
Verilator 4.018 cannot parse understand multi-dimensional array using interfaces structures from system verilog. The ... Ânderson Ignacio Da Silva

09/11/2019

07:11 PM Issue #1503: [VerilogAMS]: Unknown Language Specified
Thanks for the response. I apologize, since it was mentioned in the options, I thought may be it is supported, althou... Rohit Yadav
11:19 AM Issue #1503 (WillNotFix): [VerilogAMS]: Unknown Language Specified
Verilator supports almost no AMS, basically wreal and one or two functions, and this is unlikely to be improved even ... Wilson Snyder
02:17 PM Issue #1504 (Closed): Produce man files during 'make all'
./nodist/install_test runs cleanly:... Todd Strader
12:59 PM Issue #1504: Produce man files during 'make all'
To test installation run ./nodist/install_test
This isn't part of the regression as builds differently.
If that...
Wilson Snyder
12:01 PM Issue #1504: Produce man files during 'make all'
Yeah, on that note I didn't have latex installed until just now. I tried to 'make dist' but failed to make README.pd... Todd Strader
11:22 AM Issue #1504: Produce man files during 'make all'
I think the original thinking was most people won't want to install tex. They do have to have perl. So I'd suggest .... Wilson Snyder

09/10/2019

12:31 PM Issue #1504: Produce man files during 'make all'
t_dist_manifest is failing now because the .1 files are both in the DISTFILES list and in MANIFEST.SKIP. I was just ... Todd Strader
11:06 AM Issue #1504 (Closed): Produce man files during 'make all'
It appears the intention is to build the man files when building the 'all' target:... Todd Strader
01:55 AM Issue #1503 (WillNotFix): [VerilogAMS]: Unknown Language Specified
Hi,
I am new to Verilator. I am interested in simulating several verilogams test cases with Verilator. I ran the f...
Rohit Yadav
 

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