1 files changed, 56 insertions, 0 deletions
diff --git a/riscv/riscv-isa-run.cc b/riscv/riscv-isa-run.cc
new file mode 100644
index 0000000..a0af8de
--- /dev/null
+++ b/riscv/riscv-isa-run.cc
@@ -0,0 +1,56 @@
+#include <stdio.h>
+#include "sim.h"
+#include "htif.h"
+
+static void help()
+{
+  fprintf(stderr, "usage: riscv-isa-run -f <fd> -t <fd> [additional options]\n");
+  fprintf(stderr, "Options:\n");
+  fprintf(stderr, "  -f <fd>    From-host pipe file descriptor\n");
+  fprintf(stderr, "  -t <fd>    To-host pipe file descriptor\n");
+  fprintf(stderr, "  -p <n>     Simulate <n> processors\n");
+  fprintf(stderr, "  -d         Interactive debug mode\n");
+  exit(1);
+}
+
+int main(int argc, char** argv)
+{
+  bool debug = false;
+  int nprocs = 1;
+  int fromhost_fd = -1, tohost_fd = -1;
+
+  // parse command-line arguments
+  for(int c; (c = getopt(argc,argv,"hdp:f:t:")) != -1; )
+  {
+    switch(c)
+    {
+      case 'd':
+        debug = true;
+        break;
+      case 'p':
+        nprocs = atoi(optarg);
+        break;
+      case 'f':
+        fromhost_fd = atoi(optarg);
+        break;
+      case 't':
+        tohost_fd = atoi(optarg);
+        break;
+      default:
+        fprintf(stderr, "unknown option: -%c", optopt);
+      case 'h':
+        help();
+    }
+  }
+
+  // we require -f and -t to be specified so we can communicate with the host
+  if(fromhost_fd == -1 || tohost_fd == -1)
+    help();
+
+  // initialize host-target interface
+  htif_t htif(tohost_fd, fromhost_fd);
+
+  // initalize simulator and run to completion
+  sim_t s(nprocs, &htif);
+  s.run(debug);
+}