From: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Modern glibcs seem to have a working 6 argument syscall, so
use the glibc syscall stub if possible.
---
syscall.c | 10 +++++++++-
1 files changed, 9 insertions(+), 1 deletions(-)
diff --git a/syscall.c b/syscall.c
index 7b3fe9e..6d0f788 100755
--- a/syscall.c
+++ b/syscall.c
@@ -115,7 +115,15 @@
#endif
-#if defined(__x86_64__)
+#if defined(__GLIBC__) && __GLIBC_PREREQ(2, 11)
+
+/* glibc 2.11 seems to have working 6 argument sycall. Use the
+ glibc supplied syscall in this case.
+ The version cut-off is rather arbitary and could be probably
+ earlier. */
+
+#define syscall6 syscall
+#elif defined(__x86_64__)
/* 6 argument calls on x86-64 are often buggy in both glibc and
asm/unistd.h. Add a working version here. */
long syscall6(long call, long a, long b, long c, long d, long e, long f)
--
1.7.5.4
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