add XML writer for simulation setting object

libopenfpga/libarchopenfpga/arch/sample_arch.xml

@@ -278,12 +278,12 @@
   </measurement_setting>
   <stimulus>
     <clock>
-      <rise slew_time="20e-12" slew_type="abs"/>
+      <rise slew_type="abs" slew_time="20e-12" />
-      <fall slew_time="20e-12" slew_type="abs"/>
+      <fall slew_type="abs" slew_time="20e-12" />
     </clock>
     <input>
-      <rise slew_time="25e-12" slew_type="abs"/>
+      <rise slew_type="abs" slew_time="25e-12" />
-      <fall slew_time="25e-12" slew_type="abs"/>
+      <fall slew_type="abs" slew_time="25e-12" />
     </input>
   </stimulus>
 </openfpga_simulation_setting>

libopenfpga/libarchopenfpga/src/simulation_setting.cpp

@@ -53,10 +53,6 @@ e_sim_accuracy_type SimulationSetting::simulation_accuracy_type() const {
 }
 
 float SimulationSetting::simulation_accuracy() const {
-  /* If fractional accuracy is selected, we give a zero accuracy */
-  if (SIM_ACCURACY_FRAC == simulation_accuracy_type()) {
-    return 0.;
-  }
   return simulation_accuracy_;
 }
 
@@ -97,10 +93,6 @@ e_sim_accuracy_type SimulationSetting::stimuli_clock_slew_type(const e_sim_signa
 }
 
 float SimulationSetting::stimuli_clock_slew(const e_sim_signal_type& signal_type) const {
-  /* If fractional accuracy is selected, we give a zero accuracy */
-  if (SIM_ACCURACY_FRAC == stimuli_clock_slew_type(signal_type)) {
-    return 0.;
-  }
   return clock_slews_[signal_type];
 }
 
@@ -109,10 +101,6 @@ e_sim_accuracy_type SimulationSetting::stimuli_input_slew_type(const e_sim_signa
 }
 
 float SimulationSetting::stimuli_input_slew(const e_sim_signal_type& signal_type) const {
-  /* If fractional accuracy is selected, we give a zero accuracy */
-  if (SIM_ACCURACY_FRAC == stimuli_input_slew_type(signal_type)) {
-    return 0.;
-  }
   return input_slews_[signal_type];
 }
 
@@ -153,10 +141,6 @@ void SimulationSetting::set_simulation_accuracy_type(const e_sim_accuracy_type&
 }
 
 void SimulationSetting::set_simulation_accuracy(const float& accuracy) {
-  /* If fractional accuracy is selected, we do nothing */
-  if (SIM_ACCURACY_FRAC == simulation_accuracy_type()) {
-    return;
-  }
   simulation_accuracy_ = accuracy;
 }
 
@@ -204,10 +188,6 @@ void SimulationSetting::set_stimuli_clock_slew_type(const e_sim_signal_type& sig
 
 void SimulationSetting::set_stimuli_clock_slew(const e_sim_signal_type& signal_type,
                                                const float& clock_slew) {
-  /* If fractional accuracy is selected, we do nothing */
-  if (SIM_ACCURACY_FRAC == stimuli_clock_slew_type(signal_type)) {
-    return;
-  }
   clock_slews_[signal_type] = clock_slew;
 }
 
@@ -219,10 +199,6 @@ void SimulationSetting::set_stimuli_input_slew_type(const e_sim_signal_type& sig
 
 void SimulationSetting::set_stimuli_input_slew(const e_sim_signal_type& signal_type,
                                                const float& input_slew) {
-  /* If fractional accuracy is selected, we do nothing */
-  if (SIM_ACCURACY_FRAC == stimuli_input_slew_type(signal_type)) {
-    return;
-  }
   input_slews_[signal_type] = input_slew;
 }
 

libopenfpga/libarchopenfpga/src/simulation_setting.h

@@ -32,7 +32,7 @@ enum e_sim_accuracy_type {
   NUM_SIM_ACCURACY_TYPES
 };
 /* Strings correspond to each accuracy type */
-constexpr std::array<const char*, NUM_SIM_ACCURACY_TYPES> SIM_ACCUARCY_TYPE_STRING = {{"frac", "abs"}};
+constexpr std::array<const char*, NUM_SIM_ACCURACY_TYPES> SIM_ACCURACY_TYPE_STRING = {{"frac", "abs"}};
 
 /********************************************************************
  * A data structure to describe simulation settings

libopenfpga/libarchopenfpga/src/write_xml_openfpga_arch.cpp

@@ -10,6 +10,7 @@
 /* Headers from readarchopenfpga library */
 #include "write_xml_circuit_library.h"
 #include "write_xml_technology_library.h"
+#include "write_xml_simulation_setting.h"
 #include "write_xml_openfpga_arch.h"
 
 /********************************************************************
@@ -34,5 +35,8 @@ void write_xml_openfpga_arch(const char* fname,
   /* Write the circuit library */
   write_xml_circuit_library(fp, fname, openfpga_arch.circuit_lib);
 
+  /* Write the simulation */
+  write_xml_simulation_setting(fp, fname, openfpga_arch.sim_setting);
+
   fp << "</openfpga_architecture>" << "\n";
 }

libopenfpga/libarchopenfpga/src/write_xml_simulation_setting.cpp

@@ -0,0 +1,244 @@
+/********************************************************************
+ * This file includes functions that outputs a simulation setting to XML format
+ *******************************************************************/
+/* Headers from system goes first */
+#include <string>
+#include <algorithm>
+
+/* Headers from vtr util library */
+#include "vtr_assert.h"
+#include "vtr_log.h"
+#include "openfpga_digest.h"
+
+/* Headers from readarchopenfpga library */
+#include "write_xml_utils.h" 
+#include "write_xml_simulation_setting.h"
+
+/********************************************************************
+ * A writer to output a clock setting in a simulation setting to XML format
+ *******************************************************************/
+static 
+void write_xml_clock_setting(std::fstream& fp,
+                             const char* fname,
+                             const SimulationSetting& sim_setting) {
+  /* Validate the file stream */
+  openfpga::check_file_stream(fname, fp);
+
+  fp << "\t" << "<clock_setting>" << "\n";
+
+  fp << "\t\t" << "<operating";
+  write_xml_attribute(fp, "frequency", sim_setting.operating_clock_frequency());
+
+  if (true == sim_setting.auto_select_num_clock_cycles()) {
+    write_xml_attribute(fp, "num_cycles", "auto");
+  } else {
+    VTR_ASSERT_SAFE(false == sim_setting.auto_select_num_clock_cycles());
+    write_xml_attribute(fp, "num_cycles", std::to_string(sim_setting.num_clock_cycles()).c_str());
+  }
+
+  write_xml_attribute(fp, "slack", std::to_string(sim_setting.operating_clock_frequency_slack()).c_str());
+  
+  fp << "/>" << "\n";
+
+  fp << "\t\t" << "<operating";
+  write_xml_attribute(fp, "frequency", sim_setting.programming_clock_frequency());
+  fp << "/>" << "\n";
+
+  fp << "\t" << "</clock_setting>" << "\n";
+}
+
+/********************************************************************
+ * A writer to output a simulator option in a simulation setting to XML format
+ *******************************************************************/
+static 
+void write_xml_simulator_option(std::fstream& fp,
+                                const char* fname,
+                                const SimulationSetting& sim_setting) {
+  /* Validate the file stream */
+  openfpga::check_file_stream(fname, fp);
+
+  fp << "\t" << "<simulator_option>" << "\n";
+
+  fp << "\t\t" << "<operating_condition";
+  write_xml_attribute(fp, "temperature", sim_setting.simulation_temperature());
+  fp << "/>" << "\n";
+
+  fp << "\t\t" << "<output_log";
+  write_xml_attribute(fp, "verbose", sim_setting.verbose_output());
+  write_xml_attribute(fp, "captab", sim_setting.capacitance_output());
+  fp << "/>" << "\n";
+
+  fp << "\t\t" << "<accuracy";
+  write_xml_attribute(fp, "type", SIM_ACCURACY_TYPE_STRING[sim_setting.simulation_accuracy_type()]);
+  write_xml_attribute(fp, "value", sim_setting.simulation_accuracy());
+  fp << "/>" << "\n";
+
+  fp << "\t\t" << "<runtime";
+  write_xml_attribute(fp, "fast_simulation", sim_setting.fast_simulation());
+  fp << "/>" << "\n";
+
+  fp << "\t" << "</simulator_option>" << "\n";
+}
+
+/********************************************************************
+ * A writer to output a monte carlo simulation setting
+ * in a simulation setting to XML format
+ *******************************************************************/
+static 
+void write_xml_monte_carlo(std::fstream& fp,
+                           const char* fname,
+                           const SimulationSetting& sim_setting) {
+  /* Validate the file stream */
+  openfpga::check_file_stream(fname, fp);
+
+  /* This is an optional setting,
+   * If defined, we will output the monte carlo simulation
+   */
+  if (false == sim_setting.run_monte_carlo_simulation()) {
+    return;
+  }
+
+  fp << "\t\t" << "<monte_carlo";
+
+  write_xml_attribute(fp, "num_simulation_points", std::to_string(sim_setting.monte_carlo_simulation_points()).c_str());
+  
+  fp << "/>" << "\n";
+}
+
+/********************************************************************
+ * A writer to output the slew measurement setting in a simulation setting to XML format
+ *******************************************************************/
+static 
+void write_xml_slew_measurement(std::fstream& fp,
+                                const char* fname,
+                                const SimulationSetting& sim_setting,
+                                const e_sim_signal_type& signal_type) {
+  /* Validate the file stream */
+  openfpga::check_file_stream(fname, fp);
+
+  fp << "\t\t\t" << "<" << SIM_SIGNAL_TYPE_STRING[signal_type];
+
+  write_xml_attribute(fp, "upper_thres_pct", sim_setting.measure_slew_upper_threshold(signal_type));
+  write_xml_attribute(fp, "lower_thres_pct", sim_setting.measure_slew_lower_threshold(signal_type));
+  
+  fp << "/>" << "\n";
+}
+
+/********************************************************************
+ * A writer to output the delay measurement setting in a simulation setting to XML format
+ *******************************************************************/
+static 
+void write_xml_delay_measurement(std::fstream& fp,
+                                const char* fname,
+                                const SimulationSetting& sim_setting,
+                                const e_sim_signal_type& signal_type) {
+  /* Validate the file stream */
+  openfpga::check_file_stream(fname, fp);
+
+  fp << "\t\t\t" << "<" << SIM_SIGNAL_TYPE_STRING[signal_type];
+
+  write_xml_attribute(fp, "input_thres_pct", sim_setting.measure_delay_input_threshold(signal_type));
+  write_xml_attribute(fp, "output_thres_pct", sim_setting.measure_delay_output_threshold(signal_type));
+  
+  fp << "/>" << "\n";
+}
+
+/********************************************************************
+ * A writer to output a measurement setting in a simulation setting to XML format
+ *******************************************************************/
+static 
+void write_xml_measurement(std::fstream& fp,
+                           const char* fname,
+                           const SimulationSetting& sim_setting) {
+  /* Validate the file stream */
+  openfpga::check_file_stream(fname, fp);
+
+  fp << "\t" << "<measurement_setting>" << "\n";
+
+  fp << "\t\t" << "<slew>" << "\n";
+  write_xml_slew_measurement(fp, fname, sim_setting, SIM_SIGNAL_RISE);
+  write_xml_slew_measurement(fp, fname, sim_setting, SIM_SIGNAL_FALL);
+  fp << "\t\t" << "</slew>" << "\n";
+
+  fp << "\t\t" << "<delay>" << "\n";
+  write_xml_delay_measurement(fp, fname, sim_setting, SIM_SIGNAL_RISE);
+  write_xml_delay_measurement(fp, fname, sim_setting, SIM_SIGNAL_FALL);
+  fp << "\t\t" << "</delay>" << "\n";
+
+  fp << "\t" << "</measurement_setting>" << "\n";
+}
+
+/********************************************************************
+ * A writer to output a stimulus setting in a simulation setting to XML format
+ *******************************************************************/
+static 
+void write_xml_stimulus(std::fstream& fp,
+                        const char* fname,
+                        const SimulationSetting& sim_setting) {
+  /* Validate the file stream */
+  openfpga::check_file_stream(fname, fp);
+
+  fp << "\t" << "<stimulus>" << "\n";
+
+  fp << "\t\t" << "<clock>" << "\n";
+
+  fp << "\t\t\t" << "<rise";
+  write_xml_attribute(fp, "slew_type", SIM_ACCURACY_TYPE_STRING[sim_setting.stimuli_clock_slew_type(SIM_SIGNAL_RISE)]);
+  write_xml_attribute(fp, "slew_time", sim_setting.stimuli_clock_slew(SIM_SIGNAL_RISE));
+  fp << "/>" << "\n";
+
+  fp << "\t\t\t" << "<fall";
+  write_xml_attribute(fp, "slew_type", SIM_ACCURACY_TYPE_STRING[sim_setting.stimuli_clock_slew_type(SIM_SIGNAL_FALL)]);
+  write_xml_attribute(fp, "slew_time", sim_setting.stimuli_clock_slew(SIM_SIGNAL_FALL));
+  fp << "/>" << "\n";
+
+  fp << "\t\t" << "</clock>" << "\n";
+
+  fp << "\t\t" << "<input>" << "\n";
+
+  fp << "\t\t\t" << "<rise";
+  write_xml_attribute(fp, "slew_type", SIM_ACCURACY_TYPE_STRING[sim_setting.stimuli_input_slew_type(SIM_SIGNAL_RISE)]);
+  write_xml_attribute(fp, "slew_time", sim_setting.stimuli_input_slew(SIM_SIGNAL_RISE));
+  fp << "/>" << "\n";
+
+  fp << "\t\t\t" << "<fall";
+  write_xml_attribute(fp, "slew_type", SIM_ACCURACY_TYPE_STRING[sim_setting.stimuli_input_slew_type(SIM_SIGNAL_FALL)]);
+  write_xml_attribute(fp, "slew_time", sim_setting.stimuli_input_slew(SIM_SIGNAL_FALL));
+  fp << "/>" << "\n";
+
+  fp << "\t\t" << "</input>" << "\n";
+
+  fp << "\t" << "</stimulus>" << "\n";
+}
+
+/********************************************************************
+ * A writer to output a simulation setting to XML format
+ *******************************************************************/
+void write_xml_simulation_setting(std::fstream& fp,
+                                  const char* fname,
+                                  const SimulationSetting& sim_setting) {
+  /* Validate the file stream */
+  openfpga::check_file_stream(fname, fp);
+  
+  /* Write the root node <openfpga_simulation_setting>
+   */
+  fp << "<openfpga_simulation_setting>" << "\n";
+
+  /* Write clock settings */ 
+  write_xml_clock_setting(fp, fname, sim_setting);
+
+  /* Write simulator option */ 
+  write_xml_simulator_option(fp, fname, sim_setting);
+
+  /* Write monte carlo simulation setting */ 
+  write_xml_monte_carlo(fp, fname, sim_setting);
+
+  /* Write measurement setting */ 
+  write_xml_measurement(fp, fname, sim_setting);
+
+  /* Write stimuli setting */ 
+  write_xml_stimulus(fp, fname, sim_setting);
+
+  /* Write the root node <openfpga_simulation_setting> */
+  fp << "</openfpga_simulation_setting>" << "\n";
+}

libopenfpga/libarchopenfpga/src/write_xml_simulation_setting.h

@@ -0,0 +1,17 @@
+#ifndef WRITE_XML_SIMULATION_SETTING_H
+#define WRITE_XML_SIMULATION_SETTING_H
+
+/********************************************************************
+ * Include header files that are required by function declaration
+ *******************************************************************/
+#include <fstream>
+#include "simulation_setting.h"
+
+/********************************************************************
+ * Function declaration
+ *******************************************************************/
+void write_xml_simulation_setting(std::fstream& fp,
+                                  const char* fname,
+                                  const SimulationSetting& sim_setting);
+
+#endif