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82 Commits

Author SHA1 Message Date
Udi Finkelstein 6378e2cd46 First draft of Verilog parser support for specify blocks and parameters. 
The only functionality of this code at the moment is to accept correct specify syntax and ignore it.
No part of the specify block is added to the AST
 2018-03-27 14:34:00 +02:00
Udi Finkelstein 2b9c75f8e3 This PR should be the base for discussion, do not merge it yet! 
It correctly detects reg/wire mix and incorrect use on blocking,nonblocking assignments within blocks and assign statements.

What it DOES'T do:
Detect registers connected to output ports of instances.

Where it FAILS:
memorty nonblocking assignments causes spurious (I assume??) errors on yosys-generated "_ADDR", "_DATA", "EN" signals.

You can test it with tests/simple/reg_wire_error.v (look inside for the comments to enable/disable specific lines)
 2018-03-11 23:09:34 +02:00
Clifford Wolf 777f2881d8 Add Verilog "automatic" keyword (ignored in synthesis) 2017-11-23 08:51:38 +01:00
Clifford Wolf 2cc09161ff Fix ignoring of simulation timings so that invalid module parameters cause syntax errors 2017-09-26 01:52:59 +02:00
Clifford Wolf 5f1d0b1024 Add $live and $fair cell types, add support for s_eventually keyword 2017-02-25 10:36:39 +01:00
Clifford Wolf 00dba4c197 Add support for SystemVerilog unique, unique0, and priority case 2017-02-23 16:33:19 +01:00
Clifford Wolf 34d4e72132 Added SystemVerilog support for ++ and -- 2017-02-23 11:21:33 +01:00
Clifford Wolf 848062088c Add checker support to verilog front-end 2017-02-09 13:51:44 +01:00
Clifford Wolf ef4a28e112 Add SV "rand" and "const rand" support 2017-02-08 14:38:15 +01:00
Clifford Wolf 3928482a3c Add $cover cell type and SVA cover() support 2017-02-04 14:14:26 +01:00
Clifford Wolf fea528280b Add "enum" and "typedef" lexer support 2017-01-17 17:33:52 +01:00
Clifford Wolf eae390ae17 Removed $predict again 2016-08-28 21:35:33 +02:00
Clifford Wolf 1276c87a56 Added read_verilog -norestrict -assume-asserts 2016-08-26 23:35:27 +02:00
Clifford Wolf cd18235f30 Added SV "restrict" keyword 2016-08-24 15:30:08 +02:00
Clifford Wolf d7763634b6 After reading the SV spec, using non-standard predict() instead of expect() 2016-07-21 13:34:33 +02:00
Clifford Wolf 721f1f5ecf Added basic support for $expect cells 2016-07-13 16:56:17 +02:00
Ruben Undheim 178ff3e7f6 Added support for SystemVerilog packages with localparam definitions 2016-06-18 10:53:55 +02:00
Clifford Wolf f13e387321 SystemVerilog also has assume(), added implicit -D FORMAL 2015-10-13 14:21:20 +02:00
Clifford Wolf b845b77f86 Fixed support for $write system task 2015-09-23 07:10:56 +02:00
Larry Doolittle 6c00704a5e Another block of spelling fixes 
Smaller this time
 2015-08-14 23:27:05 +02:00
Clifford Wolf e4ef000b70 Adjust makefiles to work with out-of-tree builds 
This is based on work done by Larry Doolittle
 2015-08-12 15:04:44 +02:00
Clifford Wolf 6c84341f22 Fixed trailing whitespaces 2015-07-02 11:14:30 +02:00
Clifford Wolf a923a63a89 Ignore celldefine directive in verilog front-end 2015-03-25 19:46:12 +01:00
Clifford Wolf 1f1deda888 Added non-std verilog assume() statement 2015-02-26 18:47:39 +01:00
Clifford Wolf ef151b0b30 Fixed handling of "//" in filenames in verilog pre-processor 2015-02-14 08:41:03 +01:00
Clifford Wolf df9d096a7d Ignoring more system task and functions 2015-01-15 13:08:19 +01:00
Clifford Wolf 7751c491fb Improved some warning messages 2014-12-27 03:40:27 +01:00
Clifford Wolf 76c83283c4 Fixed minor bug in parsing delays 2014-11-24 14:48:07 +01:00
Clifford Wolf 56c7d1e266 Fixed two minor bugs in constant parsing 2014-11-24 14:39:24 +01:00
Clifford Wolf fe829bdbdc Added log_warning() API 2014-11-09 10:44:23 +01:00
Clifford Wolf c5eb5e56b8 Re-introduced Yosys::readsome() helper function 
(f.read() + f.gcount() made problems with lines > 16kB)
 2014-10-23 10:58:36 +02:00
William Speirs fad0b0c506 Updated lexers & parsers to include prefixes 2014-10-15 00:48:19 +02:00