[Xen-changelog] [xen-unstable] stubdom: fix x86_32 compilation by __moddi3 from FreeBSD

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

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1204038667 0
# Node ID e6c3006fd9be7b5d16092b32b58920059ae1c6a6
# Parent  450be98ef36b1af40ab381d8e0aac647012a60a2
stubdom: fix x86_32 compilation by __moddi3 from FreeBSD
(like has been done previously for umoddi3 etc.)

Signed-off-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxxx>
---
 extras/mini-os/lib/math.c |   23 +++++++++++++++++++++++
 1 files changed, 23 insertions(+)

diff -r 450be98ef36b -r e6c3006fd9be extras/mini-os/lib/math.c
--- a/extras/mini-os/lib/math.c Tue Feb 26 15:02:26 2008 +0000
+++ b/extras/mini-os/lib/math.c Tue Feb 26 15:11:07 2008 +0000
@@ -388,6 +388,29 @@ __umoddi3(u_quad_t a, u_quad_t b)
         return (r);
 }
 
+/*
+ * Return remainder after dividing two signed quads.
+ *
+ * XXX
+ * If -1/2 should produce -1 on this machine, this code is wrong.
+ */
+quad_t
+__moddi3(quad_t a, quad_t b)
+{
+       u_quad_t ua, ub, ur;
+       int neg;
+
+       if (a < 0)
+               ua = -(u_quad_t)a, neg = 1;
+       else
+               ua = a, neg = 0;
+       if (b < 0)
+               ub = -(u_quad_t)b;
+       else
+               ub = b;
+       (void)__qdivrem(ua, ub, &ur);
+       return (neg ? -ur : ur);
+}
 #endif /* !defined(__ia64__) */
 
 #ifndef HAVE_LIBC

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