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Merge 3c48b4a8e2 into 314842d2a0

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Hans Baier 2025-03-30 18:44:36 +00:00 committed by GitHub
parent 314842d2a0 3c48b4a8e2
commit 4b0d3b933b
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43
frontends/verilog/verilog_parser.y
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@ -53,6 +53,8 @@ YOSYS_NAMESPACE_BEGIN
namespace VERILOG_FRONTEND {
int port_counter;
dict<std::string, int> port_stubs;
dict<std::string, std::string> port_alias_assigns;
std::vector<std::string> port_alias_wires;
dict<IdString, AstNode*> *attr_list, default_attr_list;
std::stack<dict<IdString, AstNode*> *> attr_list_stack;
dict<IdString, AstNode*> *albuf;
@ -585,6 +587,8 @@ module:
ast_stack.push_back(mod);
current_ast_mod = mod;
port_stubs.clear();
port_alias_wires.clear();
port_alias_assigns.clear();
port_counter = 0;
mod->str = *$4;
append_attr(mod, $1);
@ -592,6 +596,22 @@ module:
if (port_stubs.size() != 0)
frontend_verilog_yyerror("Missing details for module port `%s'.",
port_stubs.begin()->first.c_str());
AstNode *mod = ast_stack.back();
for (auto alias_wire: port_alias_wires) {
AstNode *wire = new AstNode(AST_WIRE);
wire->str = alias_wire;
mod->children.push_back(wire);
}
for (auto alias: port_alias_assigns) {
AstNode *assign = new AstNode(AST_ASSIGN);
AstNode *lhs = new AstNode(AST_IDENTIFIER);
lhs->str = alias.first;
assign->children.push_back(lhs);
AstNode *rhs = new AstNode(AST_IDENTIFIER);
rhs->str = alias.second;
assign->children.push_back(rhs);
mod->children.push_back(assign);
}
SET_AST_NODE_LOC(ast_stack.back(), @2, @$);
ast_stack.pop_back();
log_assert(ast_stack.size() == 1);
@ -669,6 +689,14 @@ module_arg:
}
delete $1;
} module_arg_opt_assignment |
'.' TOK_ID '(' TOK_ID {
port_alias_assigns[*$4] = *$2;
port_alias_wires.push_back(*$4);
port_stubs[*$2] = ++port_counter;
port_stubs[*$4] = port_counter;
delete $2;
delete $4;
} ')' |
TOK_ID {
astbuf1 = new AstNode(AST_INTERFACEPORT);
astbuf1->children.push_back(new AstNode(AST_INTERFACEPORTTYPE));
@ -2088,6 +2116,21 @@ wire_name:
frontend_verilog_yyerror("Input port `%s' is declared as register.", $1->c_str());
node->port_id = port_stubs[*$1];
port_stubs.erase(*$1);
// handle port aliases
for (auto port : port_stubs) {
if (port.second == node->port_id) {
// this port stub is the alias name, so set it
node->str = port.first.c_str();
port_stubs.erase(port.first);
// if the node is an output, we have to swap the
// left and right hand side of the alias wire assignment
if (node->is_output) {
auto rhs = port_alias_assigns[*$1];
port_alias_assigns.erase(*$1);
port_alias_assigns[rhs] = *$1;
}
}
}
} else {
if (node->is_input || node->is_output)
frontend_verilog_yyerror("Module port `%s' is not declared in module header.", $1->c_str());