X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdePkg%2FInclude%2FIpf%2FProcessorBind.h;h=f3706a782a498952add1b18bb64139dccd6a27e8;hp=86374b2249a7344b8c44eab90aa68ebe7a9db223;hb=caae4de6b65ff0b232de942b52ece4cb4e6fbb90;hpb=22a8f52f8ee52afbe33c5e47ac8389be44944c7c

diff --git a/MdePkg/Include/Ipf/ProcessorBind.h b/MdePkg/Include/Ipf/ProcessorBind.h
index 86374b2249..f3706a782a 100644
--- a/MdePkg/Include/Ipf/ProcessorBind.h
+++ b/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