arch/tile: Fix a couple of issues with the COMPAT code for TILE-Gx.
First, the siginfo preamble wasn't quite right; we need to indicate
that we are padding up to 4 ints of preamble for 64-bit code, and
then for compat mode we need to pad differently, using only 3 ints.
Second, the C ABI requires a save area of two registers, not two
pointers, since in compat mode we have 64-bit registers all of which
we need to save, even though we only have 32-bit VAs.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
diff --git a/arch/tile/include/asm/siginfo.h b/arch/tile/include/asm/siginfo.h
index 0c12d1b..56d661b 100644
--- a/arch/tile/include/asm/siginfo.h
+++ b/arch/tile/include/asm/siginfo.h
@@ -17,6 +17,10 @@
#define __ARCH_SI_TRAPNO
+#ifdef __LP64__
+# define __ARCH_SI_PREAMBLE_SIZE (4 * sizeof(int))
+#endif
+
#include <asm-generic/siginfo.h>
/*