Modify emscripten main to mount nodefs and to run arg as a script

diff --git a/kernel/driver.cc b/kernel/driver.cc
index bec872c246b546967cbb313fa4b75084474519e9..1786411019708fe8d78b0bb91140766bc1b37f07 100644 (file)
--- a/kernel/driver.cc
+++ b/kernel/driver.cc
@@ -85,20 +85,37 @@ USING_YOSYS_NAMESPACE
 #ifdef EMSCRIPTEN
 #  include <sys/stat.h>
 #  include <sys/types.h>
+#  include <emscripten.h>
 
 extern "C" int main(int, char**);
 extern "C" void run(const char*);
 extern "C" const char *errmsg();
 extern "C" const char *prompt();
 
-int main(int, char**)
+int main(int argc, char **argv)
 {
+       EM_ASM(
+               if (ENVIRONMENT_IS_NODE)
+               {
+                       FS.mkdir('/hostcwd');
+                       FS.mount(NODEFS, { root: '.' }, '/hostcwd');
+                       FS.mkdir('/hostfs');
+                       FS.mount(NODEFS, { root: '/' }, '/hostfs');
+               }
+       );
+
        mkdir("/work", 0777);
        chdir("/work");
        log_files.push_back(stdout);
        log_error_stderr = true;
        yosys_banner();
        yosys_setup();
+
+       if (argc == 2)
+       {
+               // Run the first argument as a script file
+               run_frontend(argv[1], "script", 0, 0, 0);
+       }
 }
 
 void run(const char *command)