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sdc: add initial stubbed demo

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This commit is contained in:
Emil Jiří Tywoniak 2025-05-02 17:48:33 +02:00
parent 11f2348246
commit b7dcdec745
3 changed files with 93 additions and 5 deletions
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4
kernel/driver.cc
View file

@ -180,7 +180,7 @@ extern char yosys_path[PATH_MAX];
#endif
#ifdef YOSYS_ENABLE_TCL
namespace Yosys {
extern int yosys_tcl_iterp_init(Tcl_Interp *interp);
extern int yosys_tcl_interp_init(Tcl_Interp *interp);
extern void yosys_tcl_activate_repl();
};
#endif
@ -602,7 +602,7 @@ int main(int argc, char **argv)
if (run_tcl_shell) {
#ifdef YOSYS_ENABLE_TCL
yosys_tcl_activate_repl();
Tcl_Main(argc, argv, yosys_tcl_iterp_init);
Tcl_Main(argc, argv, yosys_tcl_interp_init);
#else
log_error("Can't exectue TCL shell: this version of yosys is not built with TCL support enabled.\n");
#endif

60
kernel/tclapi.cc
View file

@ -532,7 +532,65 @@ static int tcl_set_param(ClientData, Tcl_Interp *interp, int objc, Tcl_Obj *cons
return TCL_OK;
}
int yosys_tcl_iterp_init(Tcl_Interp *interp)
static int sdc_get_pins_cmd(ClientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[])
{
(void)interp;
bool hierarchical_flag = false;
bool regexp_flag = false;
bool nocase_flag = false;
std::string separator = "/";
Tcl_Obj* of_objects;
std::vector<std::string> patterns;
int i = 1;
for (; i < objc; i++) {
FLAG2(hierarchical)
FLAG2(regexp)
FLAG2(nocase)
if (!strcmp(Tcl_GetString(objv[i]), "-hsc")) {
i++;
separator = Tcl_GetString(objv[i]);
continue;
}
if (!strcmp(Tcl_GetString(objv[i]), "-of_objects")) {
i++;
of_objects = objv[i];
continue;
}
// Onto the next loop
break;
}
for (; i < objc; i++) {
patterns.push_back(Tcl_GetString(objv[i]));
}
log("get_pins patterns:\n");
for (auto pat : patterns) {
log("\t%s\n", pat.c_str());
}
(void)hierarchical_flag;
(void)regexp_flag;
(void)nocase_flag;
(void)separator;
(void)of_objects;
return TCL_OK;
}
static int sdc_dummy_cmd(ClientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[])
{
(void)interp;
(void)objc;
log("Ignoring known SDC command %s\n", Tcl_GetString(objv[0]));
return TCL_OK;
}
int yosys_sdc_interp_init(Tcl_Interp *interp)
{
if (Tcl_Init(interp)!=TCL_OK)
log_warning("Tcl_Init() call failed - %s\n",Tcl_ErrnoMsg(Tcl_GetErrno()));
Tcl_CreateObjCommand(interp, "set_false_path", sdc_dummy_cmd, NULL, NULL);
Tcl_CreateObjCommand(interp, "get_pins", sdc_get_pins_cmd, NULL, NULL);
return TCL_OK;
}
int yosys_tcl_interp_init(Tcl_Interp *interp)
{
if (Tcl_Init(interp)!=TCL_OK)
log_warning("Tcl_Init() call failed - %s\n",Tcl_ErrnoMsg(Tcl_GetErrno()));

34
kernel/yosys.cc
View file

@ -86,6 +86,7 @@ CellTypes yosys_celltypes;
#ifdef YOSYS_ENABLE_TCL
Tcl_Interp *yosys_tcl_interp = NULL;
Tcl_Interp *yosys_sdc_interp = NULL;
#endif
std::set<std::string> yosys_input_files, yosys_output_files;
@ -361,16 +362,25 @@ void rewrite_filename(std::string &filename)
#ifdef YOSYS_ENABLE_TCL
// defined in tclapi.cc
extern int yosys_tcl_iterp_init(Tcl_Interp *interp);
extern int yosys_tcl_interp_init(Tcl_Interp *interp);
extern int yosys_sdc_interp_init(Tcl_Interp *interp);
extern Tcl_Interp *yosys_get_tcl_interp()
{
if (yosys_tcl_interp == NULL) {
yosys_tcl_interp = Tcl_CreateInterp();
yosys_tcl_iterp_init(yosys_tcl_interp);
yosys_tcl_interp_init(yosys_tcl_interp);
}
return yosys_tcl_interp;
}
extern Tcl_Interp *yosys_get_sdc_interp()
{
if (yosys_sdc_interp == NULL) {
yosys_sdc_interp = Tcl_CreateInterp();
yosys_sdc_interp_init(yosys_sdc_interp);
}
return yosys_sdc_interp;
}
struct TclPass : public Pass {
TclPass() : Pass("tcl", "execute a TCL script file") { }
@ -414,6 +424,26 @@ struct TclPass : public Pass {
Tcl_Release(interp);
}
} TclPass;
struct SdcPass : public Pass {
SdcPass() : Pass("sdc", "sniff at some SDC") { }
void execute(std::vector<std::string> args, RTLIL::Design *) override {
if (args.size() < 2)
log_cmd_error("Missing script file.\n");
std::vector<Tcl_Obj*> script_args;
for (auto it = args.begin() + 2; it != args.end(); ++it)
script_args.push_back(Tcl_NewStringObj((*it).c_str(), (*it).size()));
Tcl_Interp *interp = yosys_get_sdc_interp();
Tcl_Preserve(interp);
Tcl_ObjSetVar2(interp, Tcl_NewStringObj("argc", 4), NULL, Tcl_NewIntObj(script_args.size()), 0);
Tcl_ObjSetVar2(interp, Tcl_NewStringObj("argv", 4), NULL, Tcl_NewListObj(script_args.size(), script_args.data()), 0);
Tcl_ObjSetVar2(interp, Tcl_NewStringObj("argv0", 5), NULL, Tcl_NewStringObj(args[1].c_str(), args[1].size()), 0);
if (Tcl_EvalFile(interp, args[1].c_str()) != TCL_OK)
log_cmd_error("SDC interpreter returned an error: %s\n", Tcl_GetStringResult(interp));
Tcl_Release(interp);
}
} SdcPass;
#endif
#if defined(__linux__) || defined(__CYGWIN__)