From c2882b96545eeabf16767c6effa836e6f9991018 Mon Sep 17 00:00:00 2001
From: Riku Voipio <riku.voipio@iki.fi>
Date: Wed, 12 Aug 2009 15:08:24 +0300
Subject: linux-user: add eventfd support

Straightforward implementation. This syscall is rare enough that we
don't need to support the odder cases, just disable it if host glibc
is too old.

Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
---
 linux-user/syscall.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'linux-user')

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 673eed4..603fec2 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -60,6 +60,9 @@
 #ifdef TARGET_GPROF
 #include <sys/gmon.h>
 #endif
+#ifdef CONFIG_EVENTFD
+#include <sys/eventfd.h>
+#endif
 
 #define termios host_termios
 #define winsize host_winsize
@@ -6974,6 +6977,18 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
         break;
 #endif
 #endif /* CONFIG_SPLICE */
+#ifdef CONFIG_EVENTFD
+#if defined(TARGET_NR_eventfd)
+    case TARGET_NR_eventfd:
+        ret = get_errno(eventfd(arg1, 0));
+        break;
+#endif
+#if defined(TARGET_NR_eventfd2)
+    case TARGET_NR_eventfd2:
+        ret = get_errno(eventfd(arg1, arg2));
+        break;
+#endif
+#endif /* CONFIG_EVENTFD  */
     default:
     unimplemented:
         gemu_log("qemu: Unsupported syscall: %d\n", num);
-- 
cgit v1.1