diff options
| author | jackkoenig | 2016-09-22 19:10:40 -0700 |
|---|---|---|
| committer | Jack Koenig | 2016-10-26 15:15:37 -0700 |
| commit | 4b8a0d2af52ceeb3ff5d05082af53bac76744361 (patch) | |
| tree | 3c416fe2532c504cff18efc8b6d0dccab207802a /src/main/antlr4 | |
| parent | e25c6f7a5e4e1bfbfcb8345288be478caa469525 (diff) | |
Add Support for Parameterized ExtModules and Name Override
Adds support for Integer, Double/Real, and String parameters in external
modules. Also add name field to extmodules so that emitted name can be
different from Firrtl name. This is important because parameterized extmodules
will frequently have differing IO even though they need to be emitted as
instantiating the same Verilog module.
Diffstat (limited to 'src/main/antlr4')
| -rw-r--r-- | src/main/antlr4/FIRRTL.g4 | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/src/main/antlr4/FIRRTL.g4 b/src/main/antlr4/FIRRTL.g4 index 4ceed9f0..f4d9d3f8 100644 --- a/src/main/antlr4/FIRRTL.g4 +++ b/src/main/antlr4/FIRRTL.g4 @@ -63,7 +63,7 @@ circuit module : 'module' id ':' info? INDENT port* moduleBlock DEDENT - | 'extmodule' id ':' info? INDENT port* DEDENT + | 'extmodule' id ':' info? INDENT port* defname? parameter* DEDENT ; port @@ -89,6 +89,16 @@ field : 'flip'? id ':' type ; +defname + : 'defname' '=' id NEWLINE + ; + +parameter + : 'parameter' id '=' IntLit NEWLINE + | 'parameter' id '=' StringLit NEWLINE + | 'parameter' id '=' DoubleLit NEWLINE + ; + moduleBlock : simple_stmt* ; @@ -291,6 +301,10 @@ IntLit | '"' 'h' ( HexDigit )+ '"' ; +DoubleLit + : ( '+' | '-' )? Digit+ '.' Digit+ ( 'E' Digit+ )? + ; + fragment Nondigit : [a-zA-Z_] |