linux-user: Fix s390x safe-syscall for z900

The LT instruction was added in the extended immediate facility
introduced with the z9-109 processor.

Cc: Riku Voipio <riku.voipio@iki.fi>
Reported-by: Michael Tokarev <mjt@tls.msk.ru>
Fixes: c9bc3437a905b660561a26cd4ecc64579843267b
Suggested-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
(cherry picked from commit 6cde51769e75d41cade0a5b3755da0c20a96309a)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

diff --git a/linux-user/host/s390x/safe-syscall.inc.S b/linux-user/host/s390x/safe-syscall.inc.S
index f1b446abf653486aec455322d3d5d05b1a5ce1ff..414b44ad38c0758ca72e1ffeccb6d7339e5fcfdd 100644 (file)
--- a/linux-user/host/s390x/safe-syscall.inc.S
+++ b/linux-user/host/s390x/safe-syscall.inc.S
@@ -72,7 +72,7 @@ safe_syscall_base:
         */
 safe_syscall_start:
        /* if signal_pending is non-zero, don't do the call */
-       lt      %r0,0(%r8)
+       icm     %r0,15,0(%r8)
        jne     2f
        svc     0
 safe_syscall_end: