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19 Commits

Author SHA1 Message Date
Marcin Kościelnicki 0ce22cea46 read_ilang: do bounds checking on bit indices 2019-11-27 22:24:39 +01:00
whitequark 93bc5affd3 Allow attributes on individual switch cases in RTLIL. 
The parser changes are slightly awkward. Consider the following IL:

    process $0
      <point 1>
      switch \foo
        <point 2>
        case 1'1
          assign \bar \baz
          <point 3>
          ...
        case
      end
    end

Before this commit, attributes are valid in <point 1>, and <point 3>
iff it is immediately followed by a `switch`. (They are essentially
attached to the switch.) But, after this commit, and because switch
cases do not have an ending delimiter, <point 3> becomes ambiguous:
the attribute could attach to either the following `case`, or to
the following `switch`. This isn't expressible in LALR(1) and results
in a reduce/reduce conflict.

To address this, attributes inside processes are now valid anywhere
inside the process: in <point 1> and <point 3> a part of case body,
and in <point 2> as a separate rule. As a consequence, attributes
can now precede `assign`s, which is made illegal in the same way it
is illegal to attach attributes to `connect`.

Attributes are tracked separately from the parser state, so this
does not affect collection of attributes at all, other than allowing
them on `case`s. The grammar change serves purely to allow attributes
in more syntactic places.
 2019-07-08 11:34:58 +00:00
Henner Zeller 8eb2798776 Make the generated *.tab.hh include all the headers needed to define the union. 2019-05-14 21:07:26 -07:00
Clifford Wolf 752553d8e9
Merge pull request #946 from YosysHQ/clifford/specify 
Add specify parser
 2019-05-06 20:57:15 +02:00
Clifford Wolf 20268d12a5 Fix the other bison warning in ilang_parser.y 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-05-06 15:38:43 +02:00
Clifford Wolf 1cd1b5fc1a Add "real" keyword to ilang format 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-05-06 12:00:40 +02:00
Clifford Wolf dfb242c905 Add "read_ilang -lib" 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-04-05 17:31:49 +02:00
Clifford Wolf 6dad191377 Add "read_ilang -[no]overwrite" 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-12-23 15:45:09 +01:00
whitequark 4effb38e6d read_ilang: allow slicing sigspecs. 2018-12-16 17:53:26 +00:00
Clifford Wolf aa72262330 Added avail params to ilang format, check module params in 'hierarchy -check' 2016-10-22 11:05:49 +02:00
Clifford Wolf 53655d173b Added $global_clock verilog syntax support for creating $ff cells 2016-10-14 12:33:56 +02:00
Clifford Wolf 4a697accd4 Fixed oom bug in ilang parser 2015-11-29 20:30:32 +01:00
Clifford Wolf 32f5ee117c Fixed performance bug in ilang parser 2015-11-27 19:46:47 +01:00
Clifford Wolf 207736b4ee Import more std:: stuff into Yosys namespace 2015-10-25 19:30:49 +01:00
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 eefe78be09 Fixed memory->start_offset handling 2015-01-01 12:56:01 +01:00
Clifford Wolf a6c96b986b Added Yosys::{dict,nodict,vector} container types 2014-12-26 10:53:21 +01:00
William Speirs fad0b0c506 Updated lexers & parsers to include prefixes 2014-10-15 00:48:19 +02:00