From 39db17f164e21473d839272db2271791259666d7 Mon Sep 17 00:00:00 2001
From: Alon Zakai <alonzakai@gmail.com>
Date: Sat, 31 Oct 2015 13:45:03 -0700
Subject: load and store in interpreter/js

---
 src/wasm-js.cpp | 52 +++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 51 insertions(+), 1 deletion(-)

(limited to 'src/wasm-js.cpp')

diff --git a/src/wasm-js.cpp b/src/wasm-js.cpp
index 2bea09a16..c0b2aadc2 100644
--- a/src/wasm-js.cpp
+++ b/src/wasm-js.cpp
@@ -59,9 +59,59 @@ extern "C" ModuleInstance* EMSCRIPTEN_KEEPALIVE load_asm(char *input) {
     }
 
     Literal load(Load* load, Literal ptr) override {
+      size_t addr = ptr.geti32();
+      assert(load->align == load->bytes);
+      if (!load->float_) {
+        if (load->bytes == 1) {
+          if (load->signed_) {
+            return Literal(EM_ASM_INT({ return Module['instance'].parent['HEAP8'][$0] }, addr));
+          } else {
+            return Literal(EM_ASM_INT({ return Module['instance'].parent['HEAPU8'][$0] }, addr));
+          }
+        } else if (load->bytes == 2) {
+          if (load->signed_) {
+            return Literal(EM_ASM_INT({ return Module['instance'].parent['HEAP16'][$0] }, addr));
+          } else {
+            return Literal(EM_ASM_INT({ return Module['instance'].parent['HEAPU16'][$0] }, addr));
+          }
+        } else if (load->bytes == 4) {
+          if (load->signed_) {
+            return Literal(EM_ASM_INT({ return Module['instance'].parent['HEAP32'][$0] }, addr));
+          } else {
+            return Literal(EM_ASM_INT({ return Module['instance'].parent['HEAPU32'][$0] }, addr));
+          }
+        }
+        abort();
+      } else {
+        if (load->bytes == 4) {
+          return Literal(EM_ASM_DOUBLE({ return Module['instance'].parent['HEAPF32'][$0] }, addr));
+        } else if (load->bytes == 8) {
+          return Literal(EM_ASM_DOUBLE({ return Module['instance'].parent['HEAPF64'][$0] }, addr));
+        }
+        abort();
+      }
     }
 
-    Literal store(Store* store, Literal ptr, Literal value) override {
+    void store(Store* store, Literal ptr, Literal value) override {
+      size_t addr = ptr.geti32();
+      assert(store->align == store->bytes);
+      if (!store->float_) {
+        if (store->bytes == 1) {
+          EM_ASM_INT({ Module['instance'].parent['HEAP8'][$0] = $1 }, addr, value.geti32());
+        } else if (store->bytes == 2) {
+          EM_ASM_INT({ Module['instance'].parent['HEAP16'][$0] = $1 }, addr, value.geti32());
+        } else if (store->bytes == 4) {
+          EM_ASM_INT({ Module['instance'].parent['HEAP32'][$0] = $1 }, addr, value.geti32());
+        }
+        abort();
+      } else {
+        if (store->bytes == 4) {
+          EM_ASM_DOUBLE({ Module['instance'].parent['HEAPF32'][$0] = $1 }, addr, value.getf64());
+        } else if (store->bytes == 8) {
+          EM_ASM_DOUBLE({ Module['instance'].parent['HEAPF64'][$0] = $1 }, addr, value.getf64());
+        }
+        abort();
+      }
     }
   };
 
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