/* Native-dependent code for FreeBSD.
- Copyright 2004 Free Software Foundation, Inc.
+ 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 2 of the License, or
+ 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,
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, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef FBSD_NAT_H
#define FBSD_NAT_H
-/* Return a the name of file that can be opened to get the symbols for
- the child process identified by PID. */
+#include "inf-ptrace.h"
+#include "regcache.h"
+#include "regset.h"
+#include <osreldate.h>
+#include <sys/proc.h>
-extern char *fbsd_pid_to_exec_file (int pid);
+/* 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
-/* Iterate over all the memory regions in the current inferior,
- calling FUNC for each memory region. OBFD is passed as the last
- argument to FUNC. */
+/* A prototype FreeBSD target. */
-extern int fbsd_find_memory_regions (int (*func) (CORE_ADDR, unsigned long,
- int, int, int, void *),
- void *obfd);
+class fbsd_nat_target : public inf_ptrace_target
+{
+public:
+ const char *pid_to_exec_file (int pid) override;
-/* Create appropriate note sections for a corefile, returning them in
- allocated memory. */
+ int find_memory_regions (find_memory_region_ftype func, void *data) override;
-extern char *fbsd_make_corefile_notes (bfd *obfd, int *note_size);
+ 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);
+
+ /* Helper routines which use PT_GETREGSET and PT_SETREGSET for the
+ specified NOTE instead of regset-specific fetch and store
+ ops. */
+
+ bool fetch_regset (struct regcache *regcache, int regnum, int note,
+ const struct regset *regset, void *regs, size_t size);
+
+ bool store_regset (struct regcache *regcache, int regnum, int note,
+ 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));
+ }
+
+ /* Helper routine for use in read_description in subclasses. This
+ routine checks if the register set for the specified NOTE is
+ present for a given PTID. If the register set is present, the
+ the size of the register set is returned. If the register set is
+ not present, zero is returned. */
+
+ bool have_regset (ptid_t ptid, int note);
+
+ /* Wrapper versions of the PT_GETREGSET and PT_REGSET helpers which
+ accept a register set type. */
+
+ template <class Regset>
+ bool fetch_regset (struct regcache *regcache, int regnum, int note,
+ const struct regset *regset)
+ {
+ Regset regs;
+ return fetch_regset (regcache, regnum, note, regset, ®s, sizeof (regs));
+ }
+
+ template <class Regset>
+ bool store_regset (struct regcache *regcache, int regnum, int note,
+ const struct regset *regset)
+ {
+ Regset regs;
+ return store_regset (regcache, regnum, note, 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 */
projects / binutils-gdb.git / blobdiff