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sdc: collect design objects
This commit is contained in:
Emil J. Tywoniak
parent
83ff7e0f9e
commit
56e0da9d17
2 changed files with 166 additions and 42 deletions
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@ -3,6 +3,7 @@
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#include "kernel/rtlil.h"
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#include "kernel/log.h"
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#include <tcl.h>
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#include <list>
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USING_YOSYS_NAMESPACE
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@ -10,17 +11,20 @@ PRIVATE_NAMESPACE_BEGIN
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template<typename T>
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static bool parse_flag(char* arg, const char* flag_name, T& flag_var) {
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std::string expected = std::string("-") + flag_name;
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if (expected == arg) {
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flag_var = true;
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return true;
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}
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return false;
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std::string expected = std::string("-") + flag_name;
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if (expected == arg) {
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flag_var = true;
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return true;
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}
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return false;
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}
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// TODO return values like json_to_tcl on result.json
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static int sdc_get_pins_cmd(ClientData, Tcl_Interp *interp, int objc, Tcl_Obj* const objv[])
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{
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(void)interp;
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// When this flag is present, the search for the pattern is made in all positions in the hierarchy.
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bool hierarchical_flag = false;
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bool regexp_flag = false;
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bool nocase_flag = false;
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@ -29,9 +33,10 @@ static int sdc_get_pins_cmd(ClientData, Tcl_Interp *interp, int objc, Tcl_Obj* c
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std::vector<std::string> patterns;
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int i = 1;
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for (; i < objc; i++) {
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if (parse_flag(Tcl_GetString(objv[i]), "hierarchical", hierarchical_flag))
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if (parse_flag(Tcl_GetString(objv[i]), "regexp", regexp_flag)) continue;
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if (parse_flag(Tcl_GetString(objv[i]), "nocase", nocase_flag)) continue;
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if (parse_flag(Tcl_GetString(objv[i]), "hierarchical", hierarchical_flag)) continue;
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if (parse_flag(Tcl_GetString(objv[i]), "hier", hierarchical_flag)) continue;
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if (parse_flag(Tcl_GetString(objv[i]), "regexp", regexp_flag)) continue;
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if (parse_flag(Tcl_GetString(objv[i]), "nocase", nocase_flag)) continue;
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if (!strcmp(Tcl_GetString(objv[i]), "-hsc")) {
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separator = Tcl_GetString(objv[++i]);
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continue;
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@ -53,56 +58,166 @@ static int sdc_get_pins_cmd(ClientData, Tcl_Interp *interp, int objc, Tcl_Obj* c
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(void)hierarchical_flag;
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(void)regexp_flag;
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(void)nocase_flag;
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(void)separator;
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(void)of_objects;
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if (separator != "/") {
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Tcl_SetObjResult(interp, Tcl_NewStringObj("Only '/' accepted as separator", -1));
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return TCL_ERROR;
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}
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return TCL_OK;
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}
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static int sdc_get_ports_cmd(ClientData, Tcl_Interp *interp, int objc, Tcl_Obj* const objv[])
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{
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(void)interp;
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bool regexp_flag = false;
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bool nocase_flag = false;
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std::vector<std::string> patterns;
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int i = 1;
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for (; i < objc; i++) {
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if (parse_flag(Tcl_GetString(objv[i]), "regexp", regexp_flag)) continue;
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if (parse_flag(Tcl_GetString(objv[i]), "nocase", nocase_flag)) continue;
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// Onto the next loop
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break;
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}
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for (; i < objc; i++) {
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patterns.push_back(Tcl_GetString(objv[i]));
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}
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log("get_pins patterns:\n");
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for (auto pat : patterns) {
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log("\t%s\n", pat.c_str());
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}
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(void)regexp_flag;
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(void)nocase_flag;
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return TCL_OK;
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}
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class SDCInterpreter
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{
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private:
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Tcl_Interp* interp = nullptr;
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Tcl_Interp* interp = nullptr;
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public:
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~SDCInterpreter() {
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if (interp)
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Tcl_DeleteInterp(interp);
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}
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static SDCInterpreter& get() {
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static SDCInterpreter instance;
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return instance;
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}
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Tcl_Interp* fresh_interp() {
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if (interp)
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Tcl_DeleteInterp(interp);
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interp = Tcl_CreateInterp();
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if (Tcl_Init(interp)!=TCL_OK)
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log_warning("Tcl_Init() call failed - %s\n",Tcl_ErrnoMsg(Tcl_GetErrno()));
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Tcl_CreateObjCommand(interp, "get_pins", sdc_get_pins_cmd, NULL, NULL);
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return interp;
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}
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~SDCInterpreter() {
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if (interp)
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Tcl_DeleteInterp(interp);
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}
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static SDCInterpreter& get() {
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static SDCInterpreter instance;
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return instance;
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}
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Tcl_Interp* fresh_interp() {
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if (interp)
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Tcl_DeleteInterp(interp);
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interp = Tcl_CreateInterp();
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if (Tcl_Init(interp)!=TCL_OK)
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log_warning("Tcl_Init() call failed - %s\n",Tcl_ErrnoMsg(Tcl_GetErrno()));
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Tcl_CreateObjCommand(interp, "get_pins", sdc_get_pins_cmd, NULL, NULL);
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Tcl_CreateObjCommand(interp, "get_ports", sdc_get_ports_cmd, NULL, NULL);
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return interp;
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}
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};
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struct SdcObjects {
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std::vector<std::string> ports;
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std::vector<std::pair<std::string, Cell*>> cells;
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std::vector<std::pair<std::string, Cell*>> pins;
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std::vector<std::pair<std::string, Wire*>> nets;
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void sniff_module(std::list<std::string>& hierarchy, Module* mod) {
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log_debug("sniffing module %s\n", mod->name.c_str());
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std::string prefix;
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for (auto mod_name : hierarchy) {
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if (prefix.length())
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prefix += "/"; // TODO seperator?
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prefix += mod_name;
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}
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for (auto* wire : mod->wires()) {
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std::string name = wire->name.str();
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log_assert(name.length());
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// TODO: really skip internal wires?
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if (name[0] == '$')
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continue;
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name = name.substr(1);
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std::string path = prefix;
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if (path.length())
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path += "/";
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path += name;
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nets.push_back(std::make_pair(path, wire));
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}
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for (auto* cell : mod->cells()) {
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std::string name = cell->name.str();
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// TODO: really skip internal cells?
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if (name[0] == '$')
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continue;
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name = name.substr(1);
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std::string path = prefix;
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if (path.length())
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path += "/";
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path += name;
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cells.push_back(std::make_pair(path, cell));
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for (auto pin : cell->connections()) {
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std::string pin_name = path + "/" + pin.first.str().substr(1);
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pins.push_back(std::make_pair(pin_name, cell));
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}
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if (auto sub_mod = mod->design->module(cell->type)) {
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hierarchy.push_back(name);
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sniff_module(hierarchy, sub_mod);
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hierarchy.pop_back();
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}
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}
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}
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SdcObjects(Design* design) {
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Module* top = design->top_module();
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if (!top)
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log_error("Top module couldn't be determined. Check 'top' attribute usage");
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for (auto port : top->ports) {
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ports.push_back(port.str().substr(1));
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}
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std::list<std::string> hierarchy{};
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sniff_module(hierarchy, top);
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}
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void dump() {
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log("Ports:\n");
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for (auto name : ports) {
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log("\t%s\n", name.c_str());
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}
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log("Cells:\n");
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for (auto [name, cell] : cells) {
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(void)cell;
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log("\t%s\n", name.c_str());
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}
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log("Pins:\n");
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for (auto [name, pin] : pins) {
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(void)pin;
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log("\t%s\n", name.c_str());
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}
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log("Nets:\n");
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for (auto [name, net] : nets) {
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(void)net;
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log("\t%s\n", name.c_str());
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}
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log("\n");
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}
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};
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// Also see TclPass
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struct SdcPass : public Pass {
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// TODO help
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SdcPass() : Pass("sdc", "sniff at some SDC") { }
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void execute(std::vector<std::string> args, RTLIL::Design *) override {
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void execute(std::vector<std::string> args, RTLIL::Design *design) override {
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if (args.size() < 2)
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log_cmd_error("Missing script file.\n");
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std::vector<Tcl_Obj*> script_args;
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for (auto it = args.begin() + 2; it != args.end(); ++it)
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script_args.push_back(Tcl_NewStringObj((*it).c_str(), (*it).size()));
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log_cmd_error("Missing SDC file.\n");
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// TODO optional extra stub file
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Tcl_Interp *interp = SDCInterpreter::get().fresh_interp();
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Tcl_Preserve(interp);
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Tcl_ObjSetVar2(interp, Tcl_NewStringObj("argc", 4), NULL, Tcl_NewIntObj(script_args.size()), 0);
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Tcl_ObjSetVar2(interp, Tcl_NewStringObj("argv", 4), NULL, Tcl_NewListObj(script_args.size(), script_args.data()), 0);
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Tcl_ObjSetVar2(interp, Tcl_NewStringObj("argv0", 5), NULL, Tcl_NewStringObj(args[1].c_str(), args[1].size()), 0);
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std::string stub_path = "+/sdc/stubs.sdc";
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rewrite_filename(stub_path);
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std::string stub_path = "+/sdc/stubs.sdc";
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rewrite_filename(stub_path);
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SdcObjects objects(design);
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objects.dump();
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if (Tcl_EvalFile(interp, stub_path.c_str()) != TCL_OK)
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log_cmd_error("SDC interpreter returned an error in stub file: %s\n", Tcl_GetStringResult(interp));
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log_cmd_error("SDC interpreter returned an error in stub file: %s\n", Tcl_GetStringResult(interp));
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if (Tcl_EvalFile(interp, args[1].c_str()) != TCL_OK)
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log_cmd_error("SDC interpreter returned an error: %s\n", Tcl_GetStringResult(interp));
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Tcl_Release(interp);
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@ -1,7 +1,16 @@
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# with Tcl's eager evaluation, we will still eval args if they're unused by a stub
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proc stub {function_name} {
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proc $function_name {args} {}
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}
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# OpenROAD
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proc get_name {thing} {
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return thing
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}
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proc get_full_name {thing} {
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return thing
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}
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# Vivado UG903
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stub add_cells_to_pblock
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stub add_to_power_rail
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