gdbserver/win32-low.h

   1 /* Internal interfaces for the Win32 specific target code for gdbserver.
   2    Copyright (C) 2007-2020 Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef GDBSERVER_WIN32_LOW_H
  20 #define GDBSERVER_WIN32_LOW_H
  21
  22 #include <windows.h>
  23 #include "nat/windows-nat.h"
  24
  25 struct target_desc;
  26
  27 /* The inferior's target description.  This is a global because the
  28    Windows ports support neither bi-arch nor multi-process.  */
  29 extern const struct target_desc *win32_tdesc;
  30
  31 struct win32_target_ops
  32 {
  33   /* Architecture-specific setup.  */
  34   void (*arch_setup) (void);
  35
  36   /* The number of target registers.  */
  37   int num_regs;
  38
  39   /* Perform initializations on startup.  */
  40   void (*initial_stuff) (void);
  41
  42   /* Fetch the context from the inferior.  */
  43   void (*get_thread_context) (windows_nat::windows_thread_info *th);
  44
  45   /* Called just before resuming the thread.  */
  46   void (*prepare_to_resume) (windows_nat::windows_thread_info *th);
  47
  48   /* Called when a thread was added.  */
  49   void (*thread_added) (windows_nat::windows_thread_info *th);
  50
  51   /* Fetch register from gdbserver regcache data.  */
  52   void (*fetch_inferior_register) (struct regcache *regcache,
  53                                    windows_nat::windows_thread_info *th,
  54                                    int r);
  55
  56   /* Store a new register value into the thread context of TH.  */
  57   void (*store_inferior_register) (struct regcache *regcache,
  58                                    windows_nat::windows_thread_info *th,
  59                                    int r);
  60
  61   void (*single_step) (windows_nat::windows_thread_info *th);
  62
  63   const unsigned char *breakpoint;
  64   int breakpoint_len;
  65
  66   /* Breakpoint/Watchpoint related functions.  See target.h for comments.  */
  67   int (*supports_z_point_type) (char z_type);
  68   int (*insert_point) (enum raw_bkpt_type type, CORE_ADDR addr,
  69                        int size, struct raw_breakpoint *bp);
  70   int (*remove_point) (enum raw_bkpt_type type, CORE_ADDR addr,
  71                        int size, struct raw_breakpoint *bp);
  72   int (*stopped_by_watchpoint) (void);
  73   CORE_ADDR (*stopped_data_address) (void);
  74 };
  75
  76 extern struct win32_target_ops the_low_target;
  77
  78 /* Target ops definitions for a Win32 target.  */
  79
  80 class win32_process_target : public process_stratum_target
  81 {
  82 public:
  83
  84   int create_inferior (const char *program,
  85                        const std::vector<char *> &program_args) override;
  86
  87   int attach (unsigned long pid) override;
  88
  89   int kill (process_info *proc) override;
  90
  91   int detach (process_info *proc) override;
  92
  93   void mourn (process_info *proc) override;
  94
  95   void join (int pid) override;
  96
  97   bool thread_alive (ptid_t pid) override;
  98
  99   void resume (thread_resume *resume_info, size_t n) override;
 100
 101   ptid_t wait (ptid_t ptid, target_waitstatus *status,
 102                int options) override;
 103
 104   void fetch_registers (regcache *regcache, int regno) override;
 105
 106   void store_registers (regcache *regcache, int regno) override;
 107
 108   int read_memory (CORE_ADDR memaddr, unsigned char *myaddr,
 109                    int len) override;
 110
 111   int write_memory (CORE_ADDR memaddr, const unsigned char *myaddr,
 112                     int len) override;
 113
 114   void request_interrupt () override;
 115
 116   bool supports_z_point_type (char z_type) override;
 117
 118   int insert_point (enum raw_bkpt_type type, CORE_ADDR addr,
 119                     int size, raw_breakpoint *bp) override;
 120
 121   int remove_point (enum raw_bkpt_type type, CORE_ADDR addr,
 122                     int size, raw_breakpoint *bp) override;
 123
 124   bool supports_hardware_single_step () override;
 125
 126   bool stopped_by_watchpoint () override;
 127
 128   CORE_ADDR stopped_data_address () override;
 129
 130 #ifdef _WIN32_WCE
 131   void hostio_last_error (char *buf) override;
 132 #endif
 133
 134   bool supports_qxfer_siginfo () override;
 135
 136   int qxfer_siginfo (const char *annex, unsigned char *readbuf,
 137                      unsigned const char *writebuf,
 138                      CORE_ADDR offset, int len) override;
 139
 140   bool supports_get_tib_address () override;
 141
 142   int get_tib_address (ptid_t ptid, CORE_ADDR *addr) override;
 143
 144   const gdb_byte *sw_breakpoint_from_kind (int kind, int *size) override;
 145 };
 146
 147 /* Retrieve the context for this thread, if not already retrieved.  */
 148 extern void win32_require_context (windows_nat::windows_thread_info *th);
 149
 150 /* Map the Windows error number in ERROR to a locale-dependent error
 151    message string and return a pointer to it.  Typically, the values
 152    for ERROR come from GetLastError.
 153
 154    The string pointed to shall not be modified by the application,
 155    but may be overwritten by a subsequent call to strwinerror
 156
 157    The strwinerror function does not change the current setting
 158    of GetLastError.  */
 159 extern char * strwinerror (DWORD error);
 160
 161 /* in wincecompat.c */
 162
 163 extern void to_back_slashes (char *);
 164
 165 #endif /* GDBSERVER_WIN32_LOW_H */