Add #define CPU_STACK_ALIGNMENT to the ProcessorBind.h for each of the supported CPU architectures. This value is sizeof(UINTN) for IA-32, X64, and EBC. It is 16 bytes for IPF.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1920 6f19259b-4bc3-4df7-8a09-765794883524

MdePkg/Include/Ebc/ProcessorBind.h

@@ -61,6 +61,12 @@ typedef unsigned long         UINTN;
 // Maximum legal EBC address
 //
 #define MAX_ADDRESS   ((UINTN) ~0)
+
+//
+// The stack alignment required for EBC
+//
+#define CPU_STACK_ALIGNMENT   sizeof(UINTN)
+
 //
 // Modifier to ensure that all protocol member functions and EFI intrinsics
 // use the correct C calling convention. All protocol member functions and

MdePkg/Include/Ia32/ProcessorBind.h

@@ -146,6 +146,11 @@ typedef INT32   INTN;
 //
 #define MAX_ADDRESS   0xFFFFFFFF
 
+//
+// The stack alignment required for IA-32
+//
+#define CPU_STACK_ALIGNMENT   sizeof(UINTN)
+
 //
 // Modifier to ensure that all protocol member functions and EFI intrinsics
 // use the correct C calling convention. All protocol member functions and

MdePkg/Include/Ipf/ProcessorBind.h

@@ -171,6 +171,12 @@ typedef INT64   INTN;
 //
 #define MAX_ADDRESS   0xFFFFFFFFFFFFFFFFULL
 
+//
+// Per the Itanium Software Conventions and Runtime Architecture Guide,
+// section 3.3.4, IPF stack must always be 16-byte aligned.
+//
+#define CPU_STACK_ALIGNMENT   16
+
 //
 // Modifier to ensure that all protocol member functions and EFI intrinsics
 // use the correct C calling convention. All protocol member functions and

MdePkg/Include/x64/ProcessorBind.h

@@ -159,10 +159,15 @@ typedef INT64   INTN;
 #define MAX_2_BITS  0xC000000000000000
 
 //
-// Maximum legal Itanium-based address
+// Maximum legal X64 address
 //
 #define MAX_ADDRESS   0xFFFFFFFFFFFFFFFF
 
+//
+// The stack alignment required for X64
+//
+#define CPU_STACK_ALIGNMENT   sizeof(UINTN)
+
 //
 // Modifier to ensure that all protocol member functions and EFI intrinsics
 // use the correct C calling convention. All protocol member functions and