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Add checker support to verilog front-end

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This commit is contained in:
Clifford Wolf 2017-02-09 13:51:44 +01:00
parent 2ca8d483dd
commit 848062088c
3 changed files with 33 additions and 14 deletions
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20
frontends/verilog/verilog_lexer.l
View file

@ -175,15 +175,17 @@ YOSYS_NAMESPACE_END
"always_ff" { SV_KEYWORD(TOK_ALWAYS); }
"always_latch" { SV_KEYWORD(TOK_ALWAYS); }
"assert" { if (formal_mode) return TOK_ASSERT; SV_KEYWORD(TOK_ASSERT); }
"assume" { if (formal_mode) return TOK_ASSUME; SV_KEYWORD(TOK_ASSUME); }
"cover" { if (formal_mode) return TOK_COVER; SV_KEYWORD(TOK_COVER); }
"restrict" { if (formal_mode) return TOK_RESTRICT; SV_KEYWORD(TOK_RESTRICT); }
"property" { if (formal_mode) return TOK_PROPERTY; SV_KEYWORD(TOK_PROPERTY); }
"rand" { if (formal_mode) return TOK_RAND; SV_KEYWORD(TOK_RAND); }
"const" { if (formal_mode) return TOK_CONST; SV_KEYWORD(TOK_CONST); }
"logic" { SV_KEYWORD(TOK_REG); }
"bit" { SV_KEYWORD(TOK_REG); }
"assert" { if (formal_mode) return TOK_ASSERT; SV_KEYWORD(TOK_ASSERT); }
"assume" { if (formal_mode) return TOK_ASSUME; SV_KEYWORD(TOK_ASSUME); }
"cover" { if (formal_mode) return TOK_COVER; SV_KEYWORD(TOK_COVER); }
"restrict" { if (formal_mode) return TOK_RESTRICT; SV_KEYWORD(TOK_RESTRICT); }
"property" { if (formal_mode) return TOK_PROPERTY; SV_KEYWORD(TOK_PROPERTY); }
"rand" { if (formal_mode) return TOK_RAND; SV_KEYWORD(TOK_RAND); }
"const" { if (formal_mode) return TOK_CONST; SV_KEYWORD(TOK_CONST); }
"checker" { if (formal_mode) return TOK_CHECKER; SV_KEYWORD(TOK_CHECKER); }
"endchecker" { if (formal_mode) return TOK_ENDCHECKER; SV_KEYWORD(TOK_ENDCHECKER); }
"logic" { SV_KEYWORD(TOK_REG); }
"bit" { SV_KEYWORD(TOK_REG); }
"input" { return TOK_INPUT; }
"output" { return TOK_OUTPUT; }

15
frontends/verilog/verilog_parser.y
View file

@ -116,7 +116,7 @@ static void free_attr(std::map<std::string, AstNode*> *al)
%token TOK_SUPPLY0 TOK_SUPPLY1 TOK_TO_SIGNED TOK_TO_UNSIGNED
%token TOK_POS_INDEXED TOK_NEG_INDEXED TOK_ASSERT TOK_ASSUME
%token TOK_RESTRICT TOK_COVER TOK_PROPERTY TOK_ENUM TOK_TYPEDEF
%token TOK_RAND TOK_CONST
%token TOK_RAND TOK_CONST TOK_CHECKER TOK_ENDCHECKER
%type <ast> range range_or_multirange non_opt_range non_opt_multirange range_or_signed_int
%type <ast> wire_type expr basic_expr concat_list rvalue lvalue lvalue_concat_list
@ -465,7 +465,18 @@ module_body:
module_body_stmt:
task_func_decl | param_decl | localparam_decl | defparam_decl | wire_decl | assign_stmt | cell_stmt |
always_stmt | TOK_GENERATE module_gen_body TOK_ENDGENERATE | defattr | assert_property;
always_stmt | TOK_GENERATE module_gen_body TOK_ENDGENERATE | defattr | assert_property | checker_decl;
checker_decl:
TOK_CHECKER TOK_ID ';' {
AstNode *node = new AstNode(AST_GENBLOCK);
node->str = *$2;
ast_stack.back()->children.push_back(node);
ast_stack.push_back(node);
} module_body TOK_ENDCHECKER {
delete $2;
ast_stack.pop_back();
};
task_func_decl:
attr TOK_DPI_FUNCTION TOK_ID TOK_ID {