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kernel: Add RTLIL::PortDir for a combined input and output flag

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This commit is contained in:
Jannis Harder 2025-08-14 16:13:43 +02:00
parent 6466b15367
commit 22423b97c1
3 changed files with 34 additions and 0 deletions
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10
kernel/celltypes.h
View file

@ -320,6 +320,16 @@ struct CellTypes
return it != cell_types.end() && it->second.inputs.count(port) != 0;
}
RTLIL::PortDir cell_port_dir(RTLIL::IdString type, RTLIL::IdString port) const
{
auto it = cell_types.find(type);
if (it == cell_types.end())
return RTLIL::PD_UNKNOWN;
bool is_input = it->second.inputs.count(port);
bool is_output = it->second.outputs.count(port);
return RTLIL::PortDir(is_input + is_output * 2);
}
bool cell_evaluable(const RTLIL::IdString &type) const
{
auto it = cell_types.find(type);

16
kernel/rtlil.cc
View file

@ -4376,6 +4376,22 @@ bool RTLIL::Cell::output(const RTLIL::IdString& portname) const
return false;
}
RTLIL::PortDir RTLIL::Cell::port_dir(const RTLIL::IdString& portname) const
{
if (yosys_celltypes.cell_known(type))
return yosys_celltypes.cell_port_dir(type, portname);
if (module && module->design) {
RTLIL::Module *m = module->design->module(type);
if (m == nullptr)
return PortDir::PD_UNKNOWN;
RTLIL::Wire *w = m->wire(portname);
if (w == nullptr)
return PortDir::PD_UNKNOWN;
return PortDir(w->port_input + w->port_output * 2);
}
return PortDir::PD_UNKNOWN;
}
bool RTLIL::Cell::hasParam(const RTLIL::IdString& paramname) const
{
return parameters.count(paramname) != 0;

8
kernel/rtlil.h
View file

@ -91,6 +91,13 @@ namespace RTLIL
STATIC_ID_END,
};
enum PortDir : unsigned char {
PD_UNKNOWN = 0,
PD_INPUT = 1,
PD_OUTPUT = 2,
PD_INOUT = 3
};
struct Const;
struct AttrObject;
struct NamedObject;
@ -2123,6 +2130,7 @@ public:
bool known() const;
bool input(const RTLIL::IdString &portname) const;
bool output(const RTLIL::IdString &portname) const;
PortDir port_dir(const RTLIL::IdString &portname) const;
// access cell parameters
bool hasParam(const RTLIL::IdString &paramname) const;