From eed6c10b0c3669684d5c0186c95b92c734789a3f Mon Sep 17 00:00:00 2001
From: tangxifan <tangxifan@gmail.com>
Date: Thu, 28 Jul 2022 09:20:28 -0700
Subject: [PATCH] [lib] now io_net_place can output .place file

---
 libopenfpga/libpcf/src/base/io_net_place.cpp | 62 ++++++++++++++++++++
 libopenfpga/libpcf/src/base/io_net_place.h   |  4 ++
 2 files changed, 66 insertions(+)

diff --git a/libopenfpga/libpcf/src/base/io_net_place.cpp b/libopenfpga/libpcf/src/base/io_net_place.cpp
index f6383d14f..902103f29 100644
--- a/libopenfpga/libpcf/src/base/io_net_place.cpp
+++ b/libopenfpga/libpcf/src/base/io_net_place.cpp
@@ -61,4 +61,66 @@ void IoNetPlace::set_net_coord(const std::string& net,
   io_coords_[net][2] = z;
 }
 
+int IoNetPlace::write_to_place_file(const std::string& fname,
+                                    const bool& include_time_stamp,
+                                    const bool& verbose) const {
+  std::string timer_message = std::string("Write I/O coordinates to a place file '") + fname + std::string("'");
+
+  std::string dir_path = format_dir_path(find_path_dir_name(fname));
+
+  /* Create directories */
+  create_directory(dir_path);
+
+  /* Start time count */
+  vtr::ScopedStartFinishTimer timer(timer_message);
+
+  /* Use default name if user does not provide one */
+  VTR_ASSERT(true != fname.empty());
+
+  /* Create a file handler*/
+  std::fstream fp;
+  /* Open a file */
+  fp.open(fname, std::fstream::out | std::fstream::trunc);
+
+  /* Validate the file stream */
+  check_file_stream(fname.c_str(), fp);
+
+  int err_code = 0;
+
+  /* Write XML head */
+  fp << "# FPGA Fixed I/O placement file" << std::endl;
+  fp << "# Generated by OpenFPGA" << std::endl;
+
+  auto end = std::chrono::system_clock::now(); 
+  std::time_t end_time = std::chrono::system_clock::to_time_t(end);
+  if (include_time_stamp) {
+    fp << "# Date: " << std::ctime(&end_time) ;
+  }
+
+  fp << "#Block Name\tx\ty\tz" << std::endl;
+  fp << "#----------\t-\t-\t-" << std::endl;
+
+  size_t io_cnt = 0;
+
+  /* Walk through the fabric I/O location map data structure */
+  for (auto pair : io_coords_) {
+    fp << pair.first.c_str() << "\t";
+    fp << pair.second[0] << "\t";
+    fp << pair.second[1] << "\t";
+    fp << pair.second[2] << "\n";
+    io_cnt++;
+  } 
+
+  /* close a file */
+  fp.close();
+
+  VTR_LOGV(verbose,
+           "Outputted %lu I/Os to place file: %s\n",
+           io_cnt,
+           fname.c_str());
+
+  return err_code;
+}
+
+
 } /* end namespace openfpga */
diff --git a/libopenfpga/libpcf/src/base/io_net_place.h b/libopenfpga/libpcf/src/base/io_net_place.h
index acfe93d9f..e99e3775d 100644
--- a/libopenfpga/libpcf/src/base/io_net_place.h
+++ b/libopenfpga/libpcf/src/base/io_net_place.h
@@ -34,6 +34,10 @@ class IoNetPlace {
     size_t io_x(const std::string& net) const;
     size_t io_y(const std::string& net) const;
     size_t io_z(const std::string& net) const;
+  public: /* Writers */
+    int write_to_place_file(const std::string& fname,
+                            const bool& include_time_stamp,
+                            const bool& verbose) const;
   public: /* Public mutators */
     void set_net_coord(const std::string& net,
                       const size_t& x,