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linux-next/tools/perf/util/libunwind/arm64.c
He Kuang 3bd03c9583 perf unwind: Fix wrongly used regs for aarch64 unwind
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@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ekaterina Tumanova <tumanova@linux.vnet.ibm.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1466578626-92406-4-git-send-email-hekuang@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-23 10:30:31 -03:00

41 lines
1.3 KiB
C

/*
* This file setups defines to compile arch specific binary from the
* generic one.
*
* The function 'LIBUNWIND__ARCH_REG_ID' name is set according to arch
* name and the defination of this function is included directly from
* 'arch/arm64/util/unwind-libunwind.c', to make sure that this function
* is defined no matter what arch the host is.
*
* Finally, the arch specific unwind methods are exported which will
* be assigned to each arm64 thread.
*/
#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"
#include "libunwind-aarch64.h"
#include <../../../../arch/arm64/include/uapi/asm/perf_regs.h>
#include "../../arch/arm64/util/unwind-libunwind.c"
/* NO_LIBUNWIND_DEBUG_FRAME is a feature flag for local libunwind,
* assign NO_LIBUNWIND_DEBUG_FRAME_AARCH64 to it for compiling arm64
* unwind methods.
*/
#undef NO_LIBUNWIND_DEBUG_FRAME
#ifdef NO_LIBUNWIND_DEBUG_FRAME_AARCH64
#define NO_LIBUNWIND_DEBUG_FRAME
#endif
#include "util/unwind-libunwind-local.c"
struct unwind_libunwind_ops *
arm64_unwind_libunwind_ops = &_unwind_libunwind_ops;