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| author | Clifford Wolf <clifford@clifford.at> | 2017-11-23 08:48:17 +0100 |
|---|---|---|
| committer | Clifford Wolf <clifford@clifford.at> | 2017-11-23 08:51:38 +0100 |
| commit | 777f2881d880c7690c33821a90c990a8cebd275d (patch) | |
| tree | c0b06a2395d71403d670f6ae0ddbb3bf7e844a51 /frontends/verilog/verilog_parser.y | |
| parent | 5b6e52118c09bb5967efc2bc2ebe53b9608bad89 (diff) | |
| download | yosys-777f2881d880c7690c33821a90c990a8cebd275d.tar.gz yosys-777f2881d880c7690c33821a90c990a8cebd275d.tar.bz2 yosys-777f2881d880c7690c33821a90c990a8cebd275d.zip | |
Add Verilog "automatic" keyword (ignored in synthesis)
Diffstat (limited to 'frontends/verilog/verilog_parser.y')
| -rw-r--r-- | frontends/verilog/verilog_parser.y | 30 |
1 files changed, 17 insertions, 13 deletions
diff --git a/frontends/verilog/verilog_parser.y b/frontends/verilog/verilog_parser.y index 3b9134797..9aa01c9f0 100644 --- a/frontends/verilog/verilog_parser.y +++ b/frontends/verilog/verilog_parser.y @@ -108,7 +108,7 @@ static void free_attr(std::map<std::string, AstNode*> *al) %token TOK_INPUT TOK_OUTPUT TOK_INOUT TOK_WIRE TOK_REG %token TOK_INTEGER TOK_SIGNED TOK_ASSIGN TOK_ALWAYS TOK_INITIAL %token TOK_BEGIN TOK_END TOK_IF TOK_ELSE TOK_FOR TOK_WHILE TOK_REPEAT -%token TOK_DPI_FUNCTION TOK_POSEDGE TOK_NEGEDGE TOK_OR +%token TOK_DPI_FUNCTION TOK_POSEDGE TOK_NEGEDGE TOK_OR TOK_AUTOMATIC %token TOK_CASE TOK_CASEX TOK_CASEZ TOK_ENDCASE TOK_DEFAULT %token TOK_FUNCTION TOK_ENDFUNCTION TOK_TASK TOK_ENDTASK %token TOK_GENERATE TOK_ENDGENERATE TOK_GENVAR TOK_REAL @@ -524,35 +524,35 @@ task_func_decl: } opt_dpi_function_args ';' { current_function_or_task = NULL; } | - attr TOK_TASK TOK_ID { + attr TOK_TASK opt_automatic TOK_ID { current_function_or_task = new AstNode(AST_TASK); - current_function_or_task->str = *$3; + current_function_or_task->str = *$4; append_attr(current_function_or_task, $1); ast_stack.back()->children.push_back(current_function_or_task); ast_stack.push_back(current_function_or_task); current_function_or_task_port_id = 1; - delete $3; + delete $4; } task_func_args_opt ';' task_func_body TOK_ENDTASK { current_function_or_task = NULL; ast_stack.pop_back(); } | - attr TOK_FUNCTION opt_signed range_or_signed_int TOK_ID { + attr TOK_FUNCTION opt_automatic opt_signed range_or_signed_int TOK_ID { current_function_or_task = new AstNode(AST_FUNCTION); - current_function_or_task->str = *$5; + current_function_or_task->str = *$6; append_attr(current_function_or_task, $1); ast_stack.back()->children.push_back(current_function_or_task); ast_stack.push_back(current_function_or_task); AstNode *outreg = new AstNode(AST_WIRE); - outreg->str = *$5; - outreg->is_signed = $3; - if ($4 != NULL) { - outreg->children.push_back($4); - outreg->is_signed = $3 || $4->is_signed; - $4->is_signed = false; + outreg->str = *$6; + outreg->is_signed = $4; + if ($5 != NULL) { + outreg->children.push_back($5); + outreg->is_signed = $4 || $5->is_signed; + $5->is_signed = false; } current_function_or_task->children.push_back(outreg); current_function_or_task_port_id = 1; - delete $5; + delete $6; } task_func_args_opt ';' task_func_body TOK_ENDFUNCTION { current_function_or_task = NULL; ast_stack.pop_back(); @@ -579,6 +579,10 @@ dpi_function_args: dpi_function_arg | /* empty */; +opt_automatic: + TOK_AUTOMATIC | + /* empty */; + opt_signed: TOK_SIGNED { $$ = true; |