[PATCH RFC XEN v1 12/14] tools: libxc: implement modify_returncode for ARM.

[Ian Campbell <ian.campbell@citrix.com>]

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
---
 tools/libxc/xc_resume.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/tools/libxc/xc_resume.c b/tools/libxc/xc_resume.c
index 87d4324..fa16c3e 100644
--- a/tools/libxc/xc_resume.c
+++ b/tools/libxc/xc_resume.c
@@ -81,6 +81,24 @@ static int modify_returncode(xc_interface *xch, uint32_t domid)
     return 0;
 }
 
+#elif defined (__arm__) || defined(__aarch64__)
+
+static int modify_returncode(xc_interface *xch, uint32_t domid)
+{
+    vcpu_guest_context_any_t ctxt;
+    int rc;
+
+    if ( (rc = xc_vcpu_getcontext(xch, domid, 0, &ctxt)) != 0 )
+        return rc;
+
+    ctxt.c.user_regs.x0 = 1;
+
+    if ( (rc = xc_vcpu_setcontext(xch, domid, 0, &ctxt)) != 0 )
+        return rc;
+
+    return 0;
+}
+
 #else
 
 static int modify_returncode(xc_interface *xch, uint32_t domid)
-- 
2.6.1