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authorBalbir Singh <bsingharora@gmail.com>2016-02-01 17:03:25 +1100
committerMichael Ellerman <mpe@ellerman.id.au>2016-02-18 00:03:26 +1100
commit94e3d923592fcfe5585c18a0af9b196de0a13072 (patch)
treed00e6f829bbbdccb316e3b07801e20948b4f0a97 /arch
parente4f226b1580b36550727c324b404207f8d2f3b71 (diff)
powerpc: Fix kgdb on little endian ppc64le
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@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/kernel/kgdb.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/kgdb.c b/arch/powerpc/kernel/kgdb.c
index e77c3ccf8dcf..dbf098121ce6 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
};
static int kgdb_not_implemented(struct pt_regs *regs)