[Xen-changelog] Fix push/pop usage in tools/ioemu for x86/64.

[Xen patchbot -unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID c89d62e7015a25a48225daa929616a5ed44205b4
# Parent  4088dd0856a9cbc7ef050d7272e81666b7dfbcc7
Fix push/pop usage in tools/ioemu for x86/64.

Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>

diff -r 4088dd0856a9 -r c89d62e7015a tools/ioemu/hw/vga.c
--- a/tools/ioemu/hw/vga.c      Mon Apr 10 16:16:25 2006
+++ b/tools/ioemu/hw/vga.c      Mon Apr 10 16:25:42 2006
@@ -1369,10 +1369,16 @@
 {
     unsigned int eax, edx;
 
-    __asm__("pushl %%ebx; cpuid; popl %%ebx"
+#ifdef __x86_64__
+#define __bx "rbx"
+#else
+#define __bx "ebx"
+#endif
+    __asm__("push %%"__bx"; cpuid; pop %%"__bx
             : "=a" (eax), "=d" (edx)
             : "0" (op)
             : "cx");
+#undef __ebx
 
     return edx;
 }

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