From 398a412707a79dc048cb9b24cfe0b66bb3fa8fbe Mon Sep 17 00:00:00 2001
From: "Dr. Chat" <arkolbed@gmail.com>
Date: Thu, 14 May 2015 00:58:57 -0500
Subject: [PATCH] Inherit exe stack size if user doesn't specify one

---
 src/xenia/kernel/xboxkrnl_threading.cc | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/xenia/kernel/xboxkrnl_threading.cc b/src/xenia/kernel/xboxkrnl_threading.cc
index a8dbaa8ae..a1c4f296e 100644
--- a/src/xenia/kernel/xboxkrnl_threading.cc
+++ b/src/xenia/kernel/xboxkrnl_threading.cc
@@ -18,6 +18,7 @@
 #include "xenia/kernel/objects/xsemaphore.h"
 #include "xenia/kernel/objects/xthread.h"
 #include "xenia/kernel/objects/xtimer.h"
+#include "xenia/kernel/objects/xuser_module.h"
 #include "xenia/kernel/util/shim_utils.h"
 #include "xenia/kernel/xboxkrnl_private.h"
 #include "xenia/xbox.h"
@@ -100,6 +101,14 @@ SHIM_CALL ExCreateThread_shim(PPCContext* ppc_state, KernelState* state) {
   // LPVOID   StartContext,
   // DWORD    CreationFlags // 0x80?
 
+  // Inherit default stack size
+  if (stack_size == 0) {
+    stack_size = state->GetExecutableModule()->xex_header()->exe_stack_size;
+  }
+
+  // Stack must be aligned to 16kb pages
+  stack_size = std::max((uint32_t)0x4000, ((stack_size + 0xFFF) & 0xFFFFF000));
+
   XThread* thread = new XThread(state, stack_size, xapi_thread_startup,
                                 start_address, start_context, creation_flags);