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 */ 108