From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Jan Beulich" <jbeulich@novell.com>
Subject: RE: Definition of eax and rax
Date: Wed, 13 Dec 2006 12:35:55 +0000
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To: Keir Fraser <Keir.Fraser@cl.cam.ac.uk>, Xin B Li <xin.b.li@intel.com>
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>>> "Li, Xin B" <xin.b.li@intel.com> 13.12.06 13:15 >>>
>And I don't think it can work for none GCC compiler, since we use eax from time to time :-(
>#ifdef __GNUC__
>/* Anonymous union includes both 32- and 64-bit names (e.g., eax/rax). */
>#define __DECL_REG(name) union { uint64_t r ## name, e ## name; }
>#else
>/* Non-gcc sources must always use the proper 64-bit name (e.g., rax). */
>#define __DECL_REG(name) uint64_t r ## name
>#endif

This is meant to help non-Xen sources including Xen headers. Xen itself is always
assumed to be compiled with gcc as I understand it.

Jan