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
42class fbsd_nat_target : public inf_ptrace_target
43{
44public:
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 */
108