arch/loongarch/include/asm/uprobes.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 #ifndef __ASM_LOONGARCH_UPROBES_H
   3 #define __ASM_LOONGARCH_UPROBES_H
   4
   5 #include <asm/inst.h>
   6
   7 typedef u32 uprobe_opcode_t;
   8
   9 #define MAX_UINSN_BYTES         8
  10 #define UPROBE_XOL_SLOT_BYTES   MAX_UINSN_BYTES
  11
  12 #define UPROBE_SWBP_INSN        __emit_break(BRK_UPROBE_BP)
  13 #define UPROBE_SWBP_INSN_SIZE   LOONGARCH_INSN_SIZE
  14
  15 #define UPROBE_XOLBP_INSN       __emit_break(BRK_UPROBE_XOLBP)
  16
  17 struct arch_uprobe {
  18         unsigned long   resume_era;
  19         u32     insn[2];
  20         u32     ixol[2];
  21         bool    simulate;
  22 };
  23
  24 struct arch_uprobe_task {
  25         unsigned long saved_trap_nr;
  26 };
  27
  28 #ifdef CONFIG_UPROBES
  29 bool uprobe_breakpoint_handler(struct pt_regs *regs);
  30 bool uprobe_singlestep_handler(struct pt_regs *regs);
  31 #else /* !CONFIG_UPROBES */
  32 static inline bool uprobe_breakpoint_handler(struct pt_regs *regs) { return false; }
  33 static inline bool uprobe_singlestep_handler(struct pt_regs *regs) { return false; }
  34 #endif /* CONFIG_UPROBES */
  35
  36 #endif /* __ASM_LOONGARCH_UPROBES_H */