arch/arm64/kernel/probes/kprobes_trampoline.S

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * trampoline entry and return code for kretprobes.
   4  */
   5
   6 #include <linux/linkage.h>
   7 #include <asm/asm-bug.h>
   8 #include <asm/assembler.h>
   9
  10         .text
  11
  12 SYM_CODE_START(__kretprobe_trampoline)
  13         /*
  14          * Trigger a breakpoint exception. The PC will be adjusted by
  15          * kretprobe_breakpoint_handler(), and no subsequent instructions will
  16          * be executed from the trampoline.
  17          */
  18         brk #KRETPROBES_BRK_IMM
  19         ASM_BUG()
  20 SYM_CODE_END(__kretprobe_trampoline)