/* Native-dependent code for FreeBSD.
- Copyright (C) 2004-2014 Free Software Foundation, Inc.
+ Copyright (C) 2004-2022 Free Software Foundation, Inc.
This file is part of GDB.
#ifndef FBSD_NAT_H
#define FBSD_NAT_H
-/* Return the name of a 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 (struct target_ops *self, 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 (struct target_ops *self,
- find_memory_region_ftype func, 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 */
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