emscripten_run_script API

3 files changed, 25 insertions, 0 deletions

diff --git a/src/include/emscripten.h b/src/include/emscripten.h
index 1974fc71..958bef98 100644
--- a/src/include/emscripten.h
+++ b/src/include/emscripten.h
@@ -9,6 +9,10 @@
 
 // ES_SIZEOF
 //
+// NOTE: As of now, ES_SIZEOF is not needed when using QUANTUM_SIZE
+//       of 4. We will use the same offsets as C/C++ does in that case.
+//       ES_SIZEOF is useful if QUANTUM_SIZE is 1.
+//
 // A 'safe' sizeof operator. Sadly llvm-gcc calculates sizeof's
 // and stores them hardcoded as raw values, unlike say offsets
 // within a structure which it nicely details using getelementptr.
@@ -40,3 +44,7 @@
   #define ES_SIZEOF(T) sizeof(T)
 #endif
 
+// Interface to the underlying JS engine. This function will
+// eval() the given script.
+extern void emscripten_run_script(const char *script);
+
diff --git a/src/library.js b/src/library.js
index cc8fe45f..f79de6c8 100644
--- a/src/library.js
+++ b/src/library.js
@@ -1147,6 +1147,11 @@ var Library = {
 
   opendir: function(pname) {
     return 0;
+  },
+
+  // ** emscripten.h **
+  _Z21emscripten_run_scriptPKc: function(ptr) {
+    eval(Pointer_stringify(ptr));
   }
 };
 
diff --git a/tests/runner.py b/tests/runner.py
index 2da9b9c9..d936f10d 100644
--- a/tests/runner.py
+++ b/tests/runner.py
@@ -1131,6 +1131,18 @@ if 'benchmark' not in sys.argv:
           '''
         self.do_test(src, '*2,2,5,8,8***8,8,5,8,8***7,2,6,990,7,2*', [], lambda x: x.replace('\n', '*'))
 
+    def test_emscripten_api(self):
+        src = '''
+          #include <stdio.h>
+          #include "emscripten.h"
+
+          int main() {
+            emscripten_run_script("print('hello world' + '!')");
+            return 0;
+          }
+          '''
+        self.do_test(src, 'hello world!')
+
     def test_tinyfuncstr(self):
         src = '''
           #include <stdio.h>