gdbserver/lynx-low.h

   1 /* Copyright (C) 2010-2020 Free Software Foundation, Inc.
   2
   3    This file is part of GDB.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #ifndef GDBSERVER_LYNX_LOW_H
  19 #define GDBSERVER_LYNX_LOW_H
  20
  21 struct regcache;
  22 struct target_desc;
  23
  24 /*  Some information relative to a given register set.   */
  25
  26 struct lynx_regset_info
  27 {
  28   /* The ptrace request needed to get/set registers of this set.  */
  29   int get_request, set_request;
  30   /* The size of the register set.  */
  31   int size;
  32   /* Fill the buffer BUF from the contents of the given REGCACHE.  */
  33   void (*fill_function) (struct regcache *regcache, char *buf);
  34   /* Store the register value in BUF in the given REGCACHE.  */
  35   void (*store_function) (struct regcache *regcache, const char *buf);
  36 };
  37
  38 /* A list of regsets for the target being debugged, terminated by an entry
  39    where the size is negative.
  40
  41    This list should be created by the target-specific code.  */
  42
  43 extern struct lynx_regset_info lynx_target_regsets[];
  44
  45 /* The target-specific operations for LynxOS support.  */
  46
  47 struct lynx_target_ops
  48 {
  49   /* Architecture-specific setup.  */
  50   void (*arch_setup) (void);
  51 };
  52
  53 extern struct lynx_target_ops the_low_target;
  54
  55 /* Target ops definitions for a LynxOS target.  */
  56
  57 class lynx_process_target : public process_stratum_target
  58 {
  59 public:
  60
  61   int create_inferior (const char *program,
  62                        const std::vector<char *> &program_args) override;
  63
  64   int attach (unsigned long pid) override;
  65
  66   int kill (process_info *proc) override;
  67
  68   int detach (process_info *proc) override;
  69
  70   void mourn (process_info *proc) override;
  71
  72   void join (int pid) override;
  73
  74   bool thread_alive (ptid_t pid) override;
  75
  76   void resume (thread_resume *resume_info, size_t n) override;
  77
  78   ptid_t wait (ptid_t ptid, target_waitstatus *status,
  79                int options) override;
  80
  81   void fetch_registers (regcache *regcache, int regno) override;
  82
  83   void store_registers (regcache *regcache, int regno) override;
  84
  85   int read_memory (CORE_ADDR memaddr, unsigned char *myaddr,
  86                    int len) override;
  87
  88   int write_memory (CORE_ADDR memaddr, const unsigned char *myaddr,
  89                     int len) override;
  90
  91   void request_interrupt () override;
  92
  93   bool supports_hardware_single_step () override;
  94
  95   const gdb_byte *sw_breakpoint_from_kind (int kind, int *size) override;
  96 };
  97
  98 /* The inferior's target description.  This is a global because the
  99    LynxOS ports support neither bi-arch nor multi-process.  */
 100 extern const struct target_desc *lynx_tdesc;
 101
 102 #endif /* GDBSERVER_LYNX_LOW_H */