123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181 |
- /* Native-dependent code for FreeBSD.
- Copyright (C) 2004-2022 Free Software Foundation, Inc.
- This file is part of GDB.
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
- #ifndef FBSD_NAT_H
- #define FBSD_NAT_H
- #include "inf-ptrace.h"
- #include "regcache.h"
- #include "regset.h"
- #include <osreldate.h>
- #include <sys/proc.h>
- /* FreeBSD kernels 11.3 and later report valid si_code values for
- SIGTRAP on all architectures. Older FreeBSD kernels that supported
- TRAP_BRKPT did not report valid values for MIPS and sparc64. Even
- older kernels without TRAP_BRKPT support did not report valid
- values on any architecture. */
- #if (__FreeBSD_kernel_version >= 1102502) || (__FreeBSD_version >= 1102502)
- # define USE_SIGTRAP_SIGINFO
- #elif defined(TRAP_BRKPT)
- # if !defined(__mips__) && !defined(__sparc64__)
- # define USE_SIGTRAP_SIGINFO
- # endif
- #endif
- /* A prototype FreeBSD target. */
- class fbsd_nat_target : public inf_ptrace_target
- {
- public:
- char *pid_to_exec_file (int pid) override;
- int find_memory_regions (find_memory_region_ftype func, void *data) override;
- bool info_proc (const char *, enum info_proc_what) override;
- enum target_xfer_status xfer_partial (enum target_object object,
- const char *annex,
- gdb_byte *readbuf,
- const gdb_byte *writebuf,
- ULONGEST offset, ULONGEST len,
- ULONGEST *xfered_len) override;
- bool thread_alive (ptid_t ptid) override;
- std::string pid_to_str (ptid_t) override;
- #ifdef HAVE_STRUCT_PTRACE_LWPINFO_PL_TDNAME
- const char *thread_name (struct thread_info *) override;
- #endif
- void update_thread_list () override;
- bool can_async_p () override;
- void async (int) override;
- thread_control_capabilities get_thread_control_capabilities () override
- { return tc_schedlock; }
- void create_inferior (const char *, const std::string &,
- char **, int) override;
- void resume (ptid_t, int, enum gdb_signal) override;
- ptid_t wait (ptid_t, struct target_waitstatus *, target_wait_flags) override;
- void post_attach (int) override;
- #ifdef USE_SIGTRAP_SIGINFO
- bool supports_stopped_by_sw_breakpoint () override;
- bool stopped_by_sw_breakpoint () override;
- #endif
- #ifdef TDP_RFPPWAIT
- void follow_fork (inferior *, ptid_t, target_waitkind, bool, bool) override;
- int insert_fork_catchpoint (int) override;
- int remove_fork_catchpoint (int) override;
- int insert_vfork_catchpoint (int) override;
- int remove_vfork_catchpoint (int) override;
- #endif
- int insert_exec_catchpoint (int) override;
- int remove_exec_catchpoint (int) override;
- #ifdef HAVE_STRUCT_PTRACE_LWPINFO_PL_SYSCALL_CODE
- int set_syscall_catchpoint (int, bool, int, gdb::array_view<const int>)
- override;
- #endif
- bool supports_multi_process () override;
- bool supports_disable_randomization () override;
- /* Methods meant to be overridden by arch-specific target
- classes. */
- virtual void low_new_fork (ptid_t parent, pid_t child)
- {}
- /* The method to call, if any, when a thread is destroyed. */
- virtual void low_delete_thread (thread_info *)
- {}
- /* Hook to call prior to resuming a thread. */
- virtual void low_prepare_to_resume (thread_info *)
- {}
- protected:
- void post_startup_inferior (ptid_t) override;
- private:
- ptid_t wait_1 (ptid_t, struct target_waitstatus *, target_wait_flags);
- /* Helper routines for use in fetch_registers and store_registers in
- subclasses. These routines fetch and store a single set of
- registers described by REGSET. The REGSET's 'regmap' field must
- point to an array of 'struct regcache_map_entry'.
- FETCH_OP is a ptrace operation to fetch the set of registers from
- a native thread. STORE_OP is a ptrace operation to store the set
- of registers to a native thread.
- The caller must provide storage for the set of registers in REGS,
- and SIZE is the size of the storage.
- Returns true if the register set was transferred due to a
- matching REGNUM.*/
- bool fetch_register_set (struct regcache *regcache, int regnum, int fetch_op,
- const struct regset *regset, void *regs, size_t size);
- bool store_register_set (struct regcache *regcache, int regnum, int fetch_op,
- int store_op, const struct regset *regset,
- void *regs, size_t size);
- protected:
- /* Wrapper versions of the above helpers which accept a register set
- type such as 'struct reg' or 'struct fpreg'. */
- template <class Regset>
- bool fetch_register_set (struct regcache *regcache, int regnum, int fetch_op,
- const struct regset *regset)
- {
- Regset regs;
- return fetch_register_set (regcache, regnum, fetch_op, regset, ®s,
- sizeof (regs));
- }
- template <class Regset>
- bool store_register_set (struct regcache *regcache, int regnum, int fetch_op,
- int store_op, const struct regset *regset)
- {
- Regset regs;
- return store_register_set (regcache, regnum, fetch_op, store_op, regset,
- ®s, sizeof (regs));
- }
- };
- /* Fetch the signal information for PTID and store it in *SIGINFO.
- Return true if successful. */
- bool fbsd_nat_get_siginfo (ptid_t ptid, siginfo_t *siginfo);
- #endif /* fbsd-nat.h */
|