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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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33
frontends/verilog/parser.y
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@ -104,7 +104,7 @@ 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_POSEDGE TOK_NEGEDGE TOK_OR
%token TOK_DPI_FUNCTION TOK_POSEDGE TOK_NEGEDGE TOK_OR
%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
@ -415,6 +415,16 @@ module_body_stmt:
always_stmt | TOK_GENERATE module_gen_body TOK_ENDGENERATE | defattr | assert_property;
task_func_decl:
attr TOK_DPI_FUNCTION TOK_ID TOK_ID {
current_function_or_task = new AstNode(AST_DPI_FUNCTION, AstNode::mkconst_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);
delete $3;
delete $4;
} opt_dpi_function_args ';' {
current_function_or_task = NULL;
} |
attr TOK_TASK TOK_ID ';' {
current_function_or_task = new AstNode(AST_TASK);
current_function_or_task->str = *$3;
@ -449,6 +459,27 @@ task_func_decl:
ast_stack.pop_back();
};
dpi_function_arg:
TOK_ID TOK_ID {
current_function_or_task->children.push_back(AstNode::mkconst_str(*$1));
delete $1;
delete $2;
} |
TOK_ID {
current_function_or_task->children.push_back(AstNode::mkconst_str(*$1));
delete $1;
};
opt_dpi_function_args:
'(' dpi_function_args ')' |
/* empty */;
dpi_function_args:
dpi_function_args ',' dpi_function_arg |
dpi_function_args ',' |
dpi_function_arg |
/* empty */;
opt_signed:
TOK_SIGNED {
$$ = true;