'luaV_execute' gets call info as extra argument (it is always

available on call sites)

ldo.c

@@ -1,5 +1,5 @@
 /*
-** $Id: ldo.c,v 2.174 2017/11/23 16:35:54 roberto Exp roberto $
+** $Id: ldo.c,v 2.175 2017/11/23 18:29:41 roberto Exp roberto $
 ** Stack and Call structure of Lua
 ** See Copyright Notice in lua.h
 */
@@ -468,7 +468,7 @@ void luaD_call (lua_State *L, StkId func, int nresults) {
       ci->callstatus = CIST_LUA;
       if (L->hookmask)
         callhook(L, ci, 0);
-      luaV_execute(L);  /* run the function */
+      luaV_execute(L, ci);  /* run the function */
       break;
     }
     default: {  /* not a function */
@@ -525,14 +525,15 @@ static void finishCcall (lua_State *L, int status) {
 ** status is LUA_YIELD).
 */
 static void unroll (lua_State *L, void *ud) {
+  CallInfo *ci;
   if (ud != NULL)  /* error status? */
     finishCcall(L, *(int *)ud);  /* finish 'lua_pcallk' callee */
-  while (L->ci != &L->base_ci) {  /* something in the stack */
-    if (!isLua(L->ci))  /* C function? */
+  while ((ci = L->ci) != &L->base_ci) {  /* something in the stack */
+    if (!isLua(ci))  /* C function? */
       finishCcall(L, LUA_YIELD);  /* complete its execution */
     else {  /* Lua function */
       luaV_finishOp(L);  /* finish interrupted instruction */
-      luaV_execute(L);  /* execute down to higher C 'boundary' */
+      luaV_execute(L, ci);  /* execute down to higher C 'boundary' */
     }
   }
 }
@@ -606,7 +607,7 @@ static void resume (lua_State *L, void *ud) {
     lua_assert(L->status == LUA_YIELD);
     L->status = LUA_OK;  /* mark that it is running (again) */
     if (isLua(ci))  /* yielded inside a hook? */
-      luaV_execute(L);  /* just continue running Lua code */
+      luaV_execute(L, ci);  /* just continue running Lua code */
     else {  /* 'common' yield */
       if (ci->u.c.k != NULL) {  /* does it have a continuation function? */
         lua_unlock(L);

lvm.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lvm.c,v 2.319 2017/11/28 12:58:18 roberto Exp roberto $
+** $Id: lvm.c,v 2.320 2017/11/28 14:51:00 roberto Exp roberto $
 ** Lua virtual machine
 ** See Copyright Notice in lua.h
 */
@@ -823,8 +823,7 @@ void luaV_finishOp (lua_State *L) {
 #define vmbreak		break
 
 
-void luaV_execute (lua_State *L) {
-  CallInfo *ci = L->ci;
+void luaV_execute (lua_State *L, CallInfo *ci) {
   LClosure *cl = clLvalue(s2v(ci->func));
   TValue *k = cl->p->k;
   StkId base = ci->func + 1;

lvm.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lvm.h,v 2.46 2017/07/07 16:34:32 roberto Exp roberto $
+** $Id: lvm.h,v 2.47 2017/11/08 14:50:23 roberto Exp roberto $
 ** Lua virtual machine
 ** See Copyright Notice in lua.h
 */
@@ -112,7 +112,7 @@ LUAI_FUNC void luaV_finishget (lua_State *L, const TValue *t, TValue *key,
 LUAI_FUNC void luaV_finishset (lua_State *L, const TValue *t, TValue *key,
                                TValue *val, const TValue *slot);
 LUAI_FUNC void luaV_finishOp (lua_State *L);
-LUAI_FUNC void luaV_execute (lua_State *L);
+LUAI_FUNC void luaV_execute (lua_State *L, CallInfo *ci);
 LUAI_FUNC void luaV_concat (lua_State *L, int total);
 LUAI_FUNC lua_Integer luaV_div (lua_State *L, lua_Integer x, lua_Integer y);
 LUAI_FUNC lua_Integer luaV_mod (lua_State *L, lua_Integer x, lua_Integer y);