gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / gdbserver / lynx-low.h

/* Copyright (C) 2010-2020 Free Software Foundation, Inc.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#ifndef GDBSERVER_LYNX_LOW_H
#define GDBSERVER_LYNX_LOW_H

struct regcache;
struct target_desc;

/*  Some information relative to a given register set.   */

struct lynx_regset_info
{
  /* The ptrace request needed to get/set registers of this set.  */
  int get_request, set_request;
  /* The size of the register set.  */
  int size;
  /* Fill the buffer BUF from the contents of the given REGCACHE.  */
  void (*fill_function) (struct regcache *regcache, char *buf);
  /* Store the register value in BUF in the given REGCACHE.  */
  void (*store_function) (struct regcache *regcache, const char *buf);
};

/* A list of regsets for the target being debugged, terminated by an entry
   where the size is negative.

   This list should be created by the target-specific code.  */

extern struct lynx_regset_info lynx_target_regsets[];

/* The target-specific operations for LynxOS support.  */

struct lynx_target_ops
{
  /* Architecture-specific setup.  */
  void (*arch_setup) (void);
};

extern struct lynx_target_ops the_low_target;

/* Target ops definitions for a LynxOS target.  */

class lynx_process_target : public process_stratum_target
{
public:

  int create_inferior (const char *program,
		       const std::vector<char *> &program_args) override;

  int attach (unsigned long pid) override;

  int kill (process_info *proc) override;

  int detach (process_info *proc) override;

  void mourn (process_info *proc) override;

  void join (int pid) override;

  bool thread_alive (ptid_t pid) override;

  void resume (thread_resume *resume_info, size_t n) override;

  ptid_t wait (ptid_t ptid, target_waitstatus *status,
	       int options) override;

  void fetch_registers (regcache *regcache, int regno) override;

  void store_registers (regcache *regcache, int regno) override;

  int read_memory (CORE_ADDR memaddr, unsigned char *myaddr,
		   int len) override;

  int write_memory (CORE_ADDR memaddr, const unsigned char *myaddr,
		    int len) override;

  void request_interrupt () override;

  bool supports_hardware_single_step () override;

  const gdb_byte *sw_breakpoint_from_kind (int kind, int *size) override;
};

/* The inferior's target description.  This is a global because the
   LynxOS ports support neither bi-arch nor multi-process.  */
extern const struct target_desc *lynx_tdesc;

#endif /* GDBSERVER_LYNX_LOW_H */