gdb/fbsd-nat.h

   1 /* Native-dependent code for FreeBSD.
   2
   3    Copyright (C) 2004-2020 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef FBSD_NAT_H
  21 #define FBSD_NAT_H
  22
  23 #include "inf-ptrace.h"
  24 #include <osreldate.h>
  25 #include <sys/proc.h>
  26
  27 /* FreeBSD kernels 11.3 and later report valid si_code values for
  28    SIGTRAP on all architectures.  Older FreeBSD kernels that supported
  29    TRAP_BRKPT did not report valid values for MIPS and sparc64.  Even
  30    older kernels without TRAP_BRKPT support did not report valid
  31    values on any architecture.  */
  32 #if (__FreeBSD_kernel_version >= 1102502) || (__FreeBSD_version >= 1102502)
  33 # define USE_SIGTRAP_SIGINFO
  34 #elif defined(TRAP_BRKPT)
  35 # if !defined(__mips__) && !defined(__sparc64__)
  36 #  define USE_SIGTRAP_SIGINFO
  37 # endif
  38 #endif
  39
  40 /* A prototype FreeBSD target.  */
  41
  42 class fbsd_nat_target : public inf_ptrace_target
  43 {
  44 public:
  45   char *pid_to_exec_file (int pid) override;
  46
  47   int find_memory_regions (find_memory_region_ftype func, void *data) override;
  48
  49   bool info_proc (const char *, enum info_proc_what) override;
  50
  51   enum target_xfer_status xfer_partial (enum target_object object,
  52                                         const char *annex,
  53                                         gdb_byte *readbuf,
  54                                         const gdb_byte *writebuf,
  55                                         ULONGEST offset, ULONGEST len,
  56                                         ULONGEST *xfered_len) override;
  57
  58 #ifdef PT_LWPINFO
  59   bool thread_alive (ptid_t ptid) override;
  60   std::string pid_to_str (ptid_t) override;
  61
  62 #ifdef HAVE_STRUCT_PTRACE_LWPINFO_PL_TDNAME
  63   const char *thread_name (struct thread_info *) override;
  64 #endif
  65
  66   void update_thread_list () override;
  67
  68   thread_control_capabilities get_thread_control_capabilities () override
  69   { return tc_schedlock; }
  70
  71   void resume (ptid_t, int, enum gdb_signal) override;
  72
  73   ptid_t wait (ptid_t, struct target_waitstatus *, int) override;
  74
  75   void post_startup_inferior (ptid_t) override;
  76   void post_attach (int) override;
  77
  78 #ifdef USE_SIGTRAP_SIGINFO
  79   bool supports_stopped_by_sw_breakpoint () override;
  80   bool stopped_by_sw_breakpoint () override;
  81 #endif
  82
  83 #ifdef TDP_RFPPWAIT
  84   bool follow_fork (bool, bool) override;
  85
  86   int insert_fork_catchpoint (int) override;
  87   int remove_fork_catchpoint (int) override;
  88
  89   int insert_vfork_catchpoint (int) override;
  90   int remove_vfork_catchpoint (int) override;
  91 #endif
  92
  93 #ifdef PL_FLAG_EXEC
  94   int insert_exec_catchpoint (int) override;
  95   int remove_exec_catchpoint (int) override;
  96 #endif
  97
  98 #ifdef HAVE_STRUCT_PTRACE_LWPINFO_PL_SYSCALL_CODE
  99   int set_syscall_catchpoint (int, bool, int, gdb::array_view<const int>)
 100     override;
 101 #endif
 102 #endif /* PT_LWPINFO */
 103
 104   bool supports_multi_process () override;
 105 };
 106
 107 #endif /* fbsd-nat.h */