Author: Kai-Chung Yan <seamlikok@gmail.com>

Last-Update: 2016-08-24

Description: Manual definition of struct user_pt_regs

 On ARM64, libunwind uses struct user_pt_regs which is not defined in

 anywhere, which causes FTBFS.

--- a/src/ptrace/_UPT_access_reg.c

+++ b/src/ptrace/_UPT_access_reg.c

@@ -26,6 +26,15 @@

 #include "_UPT_internal.h"

+#if defined(__aarch64__)

+  struct user_pt_regs {

+    __u64		regs[31];

+    __u64		sp;

+    __u64		pc;

+    __u64		pstate;

+  };

+#endif

+

 #if UNW_TARGET_IA64

 # include <elf.h>

 # ifdef HAVE_ASM_PTRACE_OFFSETS_H