tile: check error properly for vDSO calls

The tile vDSO vsyscalls were not properly setting the error value.
Conventionally, tile returns the same "non-negative success, negative
errno" value that x86 does (in r0), but it also returns "zero or positive
errno" in r1, which is what the regular syscall code checks.  This change
uses that convention for the vDSO calls as well.

1 files changed, 7 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 123b0b2..8482b88 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,12 @@
 2015-01-05  Chris Metcalf  <cmetcalf@ezchip.com>
 
+        * sysdeps/unix/sysv/linux/tile/bits/libc-vdso.h: Fix return type
+        for __vdso_* functions in declarations.
+        * sysdeps/unix/sysv/linux/tile/init-first.c: Likewise for
+        definitions.
+        * sysdeps/unix/sysv/linux/tile/sysdep.h (INLINE_VSYSCALL,
+        INTERNAL_VSYSCALL): Use struct return types to check for error.
+
 	* sysdeps/ieee754/dbl-64/wordsize-64/s_llround.c [!defined _LP64
 	&& REGISTER_CAST_INT32_TO_INT64]: Provide explicit lround()
 	function with cast from llround().