[PATCH 3/3] perf unwind: Fix wrongly used regs for aarch64 unwind

[He Kuang]

By default, "unwind-libunwind-local.c" gets SP/IP register number
according to the host platform, for remote unwind, we should use
register number for target platform. Fix this by define
LIBUNWIND_ARCH_REG_SP/IP in the wrapper file of aarch64 platform.

Signed-off-by: He Kuang <hekuang@xxxxxxxxxx>
---
 tools/perf/util/libunwind/arm64.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/perf/util/libunwind/arm64.c b/tools/perf/util/libunwind/arm64.c
index 4fb5395..6559bc5 100644
--- a/tools/perf/util/libunwind/arm64.c
+++ b/tools/perf/util/libunwind/arm64.c
@@ -13,7 +13,12 @@
 
 #define REMOTE_UNWIND_LIBUNWIND
 
+/* Define arch specific functions & regs for libunwind, should be
+ * defined before including "unwind.h"
+ */
 #define LIBUNWIND__ARCH_REG_ID(regnum) libunwind__arm64_reg_id(regnum)
+#define LIBUNWIND__ARCH_REG_IP PERF_REG_ARM64_PC
+#define LIBUNWIND__ARCH_REG_SP PERF_REG_ARM64_SP
 
 #include "unwind.h"
 #include "debug.h"
-- 
1.8.5.2