From 3e7c7039680f80f3fa90cf357e5448d42397ea16 Mon Sep 17 00:00:00 2001
From: Benoit Giannangeli <benoit.giannangeli@boursorama.fr>
Date: Fri, 3 Feb 2017 11:24:18 +0100
Subject: VM Tests, OP_MOVE, OP_LOAK, partial OP_RETURN

---
 src/lstate.js | 11 ++++++++---
 src/lvm.js    | 27 +++++++++++++++++++++------
 2 files changed, 29 insertions(+), 9 deletions(-)

(limited to 'src')

diff --git a/src/lstate.js b/src/lstate.js
index 9c7eec3..15dedcb 100644
--- a/src/lstate.js
+++ b/src/lstate.js
@@ -21,14 +21,19 @@ class lua_State {
     constructor(cl) {
         this.top = 1;
         this.ci = [
-            new CallInfo(0, 1, 1, null, null);
+            new CallInfo(0, 1, 1, null, null)
         ];
         this.ci[0].savedpc = cl.p.code;
         this.ciOff = 0;
         this.stack = [
-            closure
+            cl
         ];
         this.openupval = [];
     }
 
-}
\ No newline at end of file
+}
+
+module.exports = {
+    lua_State: lua_State,
+    CallInfo: CallInfo
+};
\ No newline at end of file
diff --git a/src/lvm.js b/src/lvm.js
index 349cccf..7a65d74 100644
--- a/src/lvm.js
+++ b/src/lvm.js
@@ -14,7 +14,7 @@ class LuaVM {
        return base + a;
     }
 
-    RB(base, opcode, base, b) {
+    RB(base, opcode, b) {
        return base + b;
     }
 
@@ -35,18 +35,21 @@ class LuaVM {
         let ci = L.ci[this.L.ciOff];
 
         newframe:
-        let cl = ci.func;
-        let k = cl.p.k;
-        let base = ci.base;
-
         for (;;) {
+            var cl = L.stack[ci.func];
+            let k = cl.p.k;
+            let base = ci.base;
+
             let i = ci.savedpc[ci.pcOff++];
-            let ra = this.RA(base, i.a);
+            let ra = this.RA(base, i.A);
 
+            console.log(OC.OpCodes[i.opcode]);
             switch (OC.OpCodes[i.opcode]) {
                 case "OP_MOVE":
+                    L.stack[ra] = RB(base, i.opcode, i.B);
                     break;
                 case "OP_LOADK":
+                    L.stack[ra] = k[i.Bx];
                     break;
                 case "OP_LOADKX":
                     break;
@@ -121,6 +124,18 @@ class LuaVM {
                 case "OP_TAILCALL":
                     break;
                 case "OP_RETURN":
+                    if (i.B >= 2) {
+                        for (let j = 0; j <= i.B-2; j++) {
+                            L.stack[L.ciOff + j] = L.stack[ra + j];
+                        }
+                    }
+                    L.ci = ci.previous;
+
+                    if (L.ci === null) return;
+
+                    if (i.B !== 0) L.top = ci.top;
+
+                    continue newframe;
                     break;
                 case "OP_FORLOOP":
                     break;
-- 
cgit v1.2.3-70-g09d2