1 files changed, 6 insertions, 6 deletions

diff --git a/src/lj_mcode.c b/src/lj_mcode.c
index 5ea89f66..64b0ca90 100644
--- a/src/lj_mcode.c
+++ b/src/lj_mcode.c
@@ -66,8 +66,8 @@ void lj_mcode_sync(void *start, void *end)
 
 static void *mcode_alloc_at(jit_State *J, uintptr_t hint, size_t sz, DWORD prot)
 {
-  void *p = VirtualAlloc((void *)hint, sz,
-                         MEM_RESERVE|MEM_COMMIT|MEM_TOP_DOWN, prot);
+  void *p = LJ_WIN_VALLOC((void *)hint, sz,
+                          MEM_RESERVE|MEM_COMMIT|MEM_TOP_DOWN, prot);
   if (!p && !hint)
     lj_trace_err(J, LJ_TRERR_MCODEAL);
   return p;
@@ -82,7 +82,7 @@ static void mcode_free(jit_State *J, void *p, size_t sz)
 static int mcode_setprot(void *p, size_t sz, DWORD prot)
 {
   DWORD oprot;
-  return !VirtualProtect(p, sz, prot, &oprot);
+  return !LJ_WIN_VPROTECT(p, sz, prot, &oprot);
 }
 
 #elif LJ_TARGET_POSIX
@@ -221,8 +221,8 @@ static void *mcode_alloc(jit_State *J, size_t sz)
   */
 #if LJ_TARGET_MIPS
   /* Use the middle of the 256MB-aligned region. */
-  uintptr_t target = ((uintptr_t)(void *)lj_vm_exit_handler & 0xf0000000u) +
-                     0x08000000u;
+  uintptr_t target = ((uintptr_t)(void *)lj_vm_exit_handler &
+                      ~(uintptr_t)0x0fffffffu) + 0x08000000u;
 #else
   uintptr_t target = (uintptr_t)(void *)lj_vm_exit_handler & ~(uintptr_t)0xffff;
 #endif
@@ -255,7 +255,7 @@ static void *mcode_alloc(jit_State *J, size_t sz)
 /* All memory addresses are reachable by relative jumps. */
 static void *mcode_alloc(jit_State *J, size_t sz)
 {
-#ifdef __OpenBSD__
+#if defined(__OpenBSD__) || LJ_TARGET_UWP
   /* Allow better executable memory allocation for OpenBSD W^X mode. */
   void *p = mcode_alloc_at(J, 0, sz, MCPROT_RUN);
   if (p && mcode_setprot(p, sz, MCPROT_GEN)) {