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Synthesis support for SystemVerilog interfaces

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This time doing the changes mostly in AST before RTLIL generation
This commit is contained in:
Ruben Undheim 2018-10-11 23:33:31 +02:00
parent 9850de405a
commit 75009ada3c
10 changed files with 501 additions and 21 deletions
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60
frontends/verilog/verilog_parser.y
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@ -106,6 +106,7 @@ static void free_attr(std::map<std::string, AstNode*> *al)
%token ATTR_BEGIN ATTR_END DEFATTR_BEGIN DEFATTR_END
%token TOK_MODULE TOK_ENDMODULE TOK_PARAMETER TOK_LOCALPARAM TOK_DEFPARAM
%token TOK_PACKAGE TOK_ENDPACKAGE TOK_PACKAGESEP
%token TOK_INTERFACE TOK_ENDINTERFACE TOK_MODPORT
%token TOK_INPUT TOK_OUTPUT TOK_INOUT TOK_WIRE TOK_REG TOK_LOGIC
%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
@ -168,6 +169,7 @@ design:
param_decl design |
localparam_decl design |
package design |
interface design |
/* empty */;
attr:
@ -320,6 +322,21 @@ module_arg:
}
delete $1;
} module_arg_opt_assignment |
TOK_ID {
astbuf1 = new AstNode(AST_INTERFACEPORT);
astbuf1->children.push_back(new AstNode(AST_INTERFACEPORTTYPE));
astbuf1->children[0]->str = *$1;
delete $1;
} TOK_ID { /* SV interfaces */
if (!sv_mode)
frontend_verilog_yyerror("Interface found in port list (%s). This is not supported unless read_verilog is called with -sv!", $3->c_str());
astbuf2 = astbuf1->clone(); // really only needed if multiple instances of same type.
astbuf2->str = *$3;
delete $3;
astbuf2->port_id = ++port_counter;
ast_stack.back()->children.push_back(astbuf2);
delete astbuf1; // really only needed if multiple instances of same type.
} module_arg_opt_assignment |
attr wire_type range TOK_ID {
AstNode *node = $2;
node->str = *$4;
@ -357,6 +374,33 @@ package_body:
package_body_stmt:
localparam_decl;
interface:
TOK_INTERFACE TOK_ID {
do_not_require_port_stubs = false;
AstNode *intf = new AstNode(AST_INTERFACE);
ast_stack.back()->children.push_back(intf);
ast_stack.push_back(intf);
current_ast_mod = intf;
port_stubs.clear();
port_counter = 0;
intf->str = *$2;
delete $2;
} module_para_opt module_args_opt ';' interface_body TOK_ENDINTERFACE {
if (port_stubs.size() != 0)
frontend_verilog_yyerror("Missing details for module port `%s'.",
port_stubs.begin()->first.c_str());
ast_stack.pop_back();
log_assert(ast_stack.size() == 1);
current_ast_mod = NULL;
};
interface_body:
interface_body interface_body_stmt |;
interface_body_stmt:
param_decl | localparam_decl | defparam_decl | wire_decl | always_stmt | assign_stmt |
modport_stmt;
non_opt_delay:
'#' TOK_ID { delete $2; } |
'#' TOK_CONSTVAL { delete $2; } |
@ -1280,6 +1324,22 @@ opt_property:
opt_stmt_label:
TOK_ID ':' | /* empty */;
modport_stmt:
TOK_MODPORT TOK_ID modport_args_opt ';'
modport_args_opt:
'(' ')' | '(' modport_args optional_comma ')';
modport_args:
modport_arg | modport_args ',' modport_arg;
modport_arg:
modport_type_token TOK_ID |
TOK_ID
modport_type_token:
TOK_INPUT | TOK_OUTPUT
assert:
opt_stmt_label TOK_ASSERT opt_property '(' expr ')' ';' {
if (noassert_mode)