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Added Verilog/AST support for DPI functions (dpi_call() still unimplemented)

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This commit is contained in:
Clifford Wolf 2014-08-21 12:43:51 +02:00
parent 38addd4c67
commit 7bfc4ae120
8 changed files with 135 additions and 3 deletions
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22
frontends/verilog/lexer.l
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@ -74,6 +74,7 @@ YOSYS_NAMESPACE_END
%x STRING
%x SYNOPSYS_TRANSLATE_OFF
%x SYNOPSYS_FLAGS
%x IMPORT_DPI
%%
@ -274,6 +275,27 @@ supply1 { return TOK_SUPPLY1; }
<SYNOPSYS_FLAGS>. /* ignore everything else */
<SYNOPSYS_FLAGS>"*/" { BEGIN(0); }
import[ \t\r\n]+\"(DPI|DPI-C)\"[ \t\r\n]+function[ \t\r\n]+ {
BEGIN(IMPORT_DPI);
return TOK_DPI_FUNCTION;
}
<IMPORT_DPI>[(),] {
return *yytext;
}
<IMPORT_DPI>[a-zA-Z_$][a-zA-Z0-9_$]* {
frontend_verilog_yylval.string = new std::string(std::string("\\") + yytext);
return TOK_ID;
}
<IMPORT_DPI>[ \t\r\n] /* ignore whitespaces */
<IMPORT_DPI>";" {
BEGIN(0);
return *yytext;
}
"\\"[^ \t\r\n]+ {
frontend_verilog_yylval.string = new std::string(yytext);
return TOK_ID;