This patch is to get 
b37a6290 back again, which was removed by
d9311bfa by mistake.
gdb/gdbserver:
2015-12-21  Yao Qi  <yao.qi@linaro.org>
	* linux-aarch32-low.h [__aarch64__]: Use arm_abi_breakpoint
	arm breakpoint.
+2015-12-21  Yao Qi  <yao.qi@linaro.org>
+
+       * linux-aarch32-low.h [__aarch64__]: Use arm_abi_breakpoint
+       arm breakpoint.
+
 2015-12-18  Antoine Tremblay  <antoine.tremblay@ericsson.com>
 
        * server.c (handle_query): Call target_supports_software_single_step.
 
    ABI's breakpoint instruction.  For now at least.  */
 #define arm_eabi_breakpoint 0xe7f001f0UL
 
-#ifndef __ARM_EABI__
-static const unsigned long arm_breakpoint = arm_abi_breakpoint;
-#else
+#if (defined __ARM_EABI__ || defined __aarch64__)
 static const unsigned long arm_breakpoint = arm_eabi_breakpoint;
+#else
+static const unsigned long arm_breakpoint = arm_abi_breakpoint;
 #endif
 
 #define arm_breakpoint_len 4