[PATCH] Fix kgdb on little endian ppc64le

[Balbir Singh]

From: Balbir Singh <bsingharora at gmail.com>

I spent some time trying to use kgdb and debugged my inability to
resume from kgdb_handle_breakpoint(). NIP is not incremented
and that leads to a loop in the debugger.

I've tested this lightly on a virtual instance with KDB enabled.
After the patch, I am able to get the "go" command to work as
expected

Signed-off-by: Balbir Singh <bsingharora at gmail.com>
---
 arch/powerpc/kernel/kgdb.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/powerpc/kernel/kgdb.c b/arch/powerpc/kernel/kgdb.c
index e77c3cc..92c8f80 100644
--- a/arch/powerpc/kernel/kgdb.c
+++ b/arch/powerpc/kernel/kgdb.c
@@ -445,7 +445,11 @@ int kgdb_arch_handle_exception(int vector, int signo, int err_code,
  * Global data
  */
 struct kgdb_arch arch_kgdb_ops = {
+#ifdef __LITTLE_ENDIAN__
+	.gdb_bpt_instr = {0x08, 0x10, 0x82, 0x7d},
+#else
 	.gdb_bpt_instr = {0x7d, 0x82, 0x10, 0x08},
+#endif /* __LITTLE_ENDIAN__ */
 };
 
 static int kgdb_not_implemented(struct pt_regs *regs)
-- 
2.5.0