RE: [Xen-devel] Definition of eax and rax

["Li, Xin B" <xin.b.li@xxxxxxxxx>]

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

Am I right?
-Xin 

>-----Original Message-----
>From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx 
>[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Li, Xin B
>Sent: 2006年12月13日 20:13
>To: Keir Fraser
>Cc: Xen Development Mailing List
>Subject: [Xen-devel] Definition of eax and rax
>
>Keir, just noticed the macro:
>#define __DECL_REG(name) union { uint64_t r ## name, e ## name; }
>So, rax and eax are both 64bit, but I think we'd better define eax to
>32bit, how do you think?
>-Xin
>
>_______________________________________________
>Xen-devel mailing list
>Xen-devel@xxxxxxxxxxxxxxxxxxx
>http://lists.xensource.com/xen-devel
>

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel