[sgen] Fix MS block size calculation.

[mono.git] / mono / sgen / sgen-archdep.h

diff --git a/mono/sgen/sgen-archdep.h b/mono/sgen/sgen-archdep.h
index da6aaf01823c56265c44967c7e78504ec1165670..9fa6e2141c2e620e4a9d7d6b5671030019407e8a 100644 (file)
--- a/mono/sgen/sgen-archdep.h
+++ b/mono/sgen/sgen-archdep.h
@@ -1,5 +1,6 @@
-/*
- * sgen-archdep.h: Architecture dependent parts of SGen.
+/**
+ * \file
+ * Architecture dependent parts of SGen.
  *
  * Copyright 2001-2003 Ximian, Inc
  * Copyright 2003-2010 Novell, Inc.
@@ -26,19 +27,18 @@
 
 #elif defined(TARGET_AMD64)
 
+#ifdef HOST_WIN32
+/* The Windows x64 ABI defines no "red zone". The ABI states:
+   "All memory beyond the current address of RSP is considered volatile" */
+#define REDZONE_SIZE   0
+#else
 #define REDZONE_SIZE   128
+#endif
 
 #elif defined(TARGET_POWERPC)
 
 #define REDZONE_SIZE   224
 
-/* MS_BLOCK_SIZE must be a multiple of the system pagesize, which for some
-   architectures is 64k.  */
-#if defined(TARGET_POWERPC) || defined(TARGET_POWERPC64)
-#define ARCH_MIN_MS_BLOCK_SIZE (64*1024)
-#define ARCH_MIN_MS_BLOCK_SIZE_SHIFT   16
-#endif
-
 #elif defined(TARGET_ARM)
 
 #define REDZONE_SIZE   0