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Subject[PATCH 2/3] perf unwind: Fix wrongly used regs for x86_32 unwind
Date
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 x86_32 platform.

Signed-off-by: He Kuang <hekuang@huawei.com>
---
tools/perf/util/libunwind/x86_32.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/tools/perf/util/libunwind/x86_32.c b/tools/perf/util/libunwind/x86_32.c
index d98c17e..957ffff 100644
--- a/tools/perf/util/libunwind/x86_32.c
+++ b/tools/perf/util/libunwind/x86_32.c
@@ -12,7 +12,13 @@
*/

#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__x86_reg_id(regnum)
+#define LIBUNWIND__ARCH_REG_IP PERF_REG_X86_IP
+#define LIBUNWIND__ARCH_REG_SP PERF_REG_X86_SP

#include "unwind.h"
#include "debug.h"
--
1.8.5.2
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