arch/tile: support backtracing on TILE-Gx

This functionality was stubbed out until recently.  Now we support our
normal backtracing API on TILE-Gx as well as on TILE64/TILEPro.
This change includes a tweak to the instruction encoding caused by
adding addxli for compat mode.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/arch/tile/kernel/traps.c b/arch/tile/kernel/traps.c
index 3870abbeeaa2..0f362dc2c57f 100644
--- a/arch/tile/kernel/traps.c
+++ b/arch/tile/kernel/traps.c
@@ -128,7 +128,9 @@ static int special_ill(bundle_bits bundle, int *sigp, int *codep)
 #ifdef __tilegx__
         if ((bundle & TILEGX_BUNDLE_MODE_MASK) != 0)
                 return 0;
-        if (get_Opcode_X1(bundle) != UNARY_OPCODE_X1)
+        if (get_Opcode_X1(bundle) != RRR_0_OPCODE_X1)
+                return 0;
+        if (get_RRROpcodeExtension_X1(bundle) != UNARY_RRR_0_OPCODE_X1)
                 return 0;
         if (get_UnaryOpcodeExtension_X1(bundle) != ILL_UNARY_OPCODE_X1)
                 return 0;