From c0a332693eceec4171c4e2fef30924e4f22771fc Mon Sep 17 00:00:00 2001
From: Alon Zakai <alonzakai@gmail.com>
Date: Sun, 1 Nov 2015 19:13:02 -0800
Subject: handle float and void types in js<->wasm calls

---
 src/wasm-js.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/wasm-js.cpp b/src/wasm-js.cpp
index 6b5c014c2..4c8e27423 100644
--- a/src/wasm-js.cpp
+++ b/src/wasm-js.cpp
@@ -137,7 +137,7 @@ extern "C" void EMSCRIPTEN_KEEPALIVE load_asm(char *input) {
         abort();
       } else {
         if (load->bytes == 4) {
-          return Literal(EM_ASM_DOUBLE({ return Module['info'].parent['HEAPF32'][$0] }, addr));
+          return Literal(EM_ASM_DOUBLE({ return Module['info'].parent['HEAPF32'][$0] }, addr)); // XXX expands into double
         } else if (load->bytes == 8) {
           return Literal(EM_ASM_DOUBLE({ return Module['info'].parent['HEAPF64'][$0] }, addr));
         }
@@ -186,6 +186,8 @@ extern "C" double EMSCRIPTEN_KEEPALIVE call_from_js(const char *target) {
     // add the parameter, with a zero value if JS did not provide it.
     if (type == i32) {
       arguments.push_back(Literal(i < seen ? EM_ASM_INT({ return Module['tempArguments'][$0] }, i) : (int32_t)0));
+    } else if (type == f32) {
+      arguments.push_back(Literal(i < seen ? (float)EM_ASM_DOUBLE({ return Module['tempArguments'][$0] }, i) : (float)0.0));
     } else if (type == f64) {
       arguments.push_back(Literal(i < seen ? EM_ASM_DOUBLE({ return Module['tempArguments'][$0] }, i) : (double)0.0));
     } else {
@@ -194,7 +196,9 @@ extern "C" double EMSCRIPTEN_KEEPALIVE call_from_js(const char *target) {
   }
 
   Literal ret = instance->callFunction(name, arguments);
+  if (ret.type == none) return 0;
   if (ret.type == i32) return ret.i32;
+  if (ret.type == f32) return ret.f32;
   if (ret.type == f64) return ret.f64;
   abort();
 }
-- 
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