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/* Native-dependent code for FreeBSD.
Copyright (C) 2004-2021 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;
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_startup_inferior (ptid_t) 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;
private:
/* 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. */
void fetch_register_set (struct regcache *regcache, int regnum, int fetch_op,
const struct regset *regset, void *regs, size_t size);
void 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>
void fetch_register_set (struct regcache *regcache, int regnum, int fetch_op,
const struct regset *regset)
{
Regset regs;
fetch_register_set (regcache, regnum, fetch_op, regset, ®s,
sizeof (regs));
}
template <class Regset>
void store_register_set (struct regcache *regcache, int regnum, int fetch_op,
int store_op, const struct regset *regset)
{
Regset regs;
store_register_set (regcache, regnum, fetch_op, store_op, regset, ®s,
sizeof (regs));
}
};
#endif /* fbsd-nat.h */
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