/* Native-dependent code for FreeBSD.
- Copyright (C) 2004-2021 Free Software Foundation, Inc.
+ Copyright (C) 2004-2023 Free Software Foundation, Inc.
This file is part of GDB.
#ifndef FBSD_NAT_H
#define FBSD_NAT_H
+#include "gdbsupport/gdb_optional.h"
#include "inf-ptrace.h"
+#include "regcache.h"
+#include "regset.h"
#include <osreldate.h>
#include <sys/proc.h>
+#include <list>
+
/* 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
class fbsd_nat_target : public inf_ptrace_target
{
public:
- char *pid_to_exec_file (int pid) override;
+ const char *pid_to_exec_file (int pid) override;
int find_memory_regions (find_memory_region_ftype func, void *data) override;
void update_thread_list () override;
+ bool can_async_p () override;
+
+ void async (bool) override;
+
thread_control_capabilities get_thread_control_capabilities () override
{ return tc_schedlock; }
void create_inferior (const char *, const std::string &,
char **, int) override;
+ void attach (const char *, int) override;
+
+ void detach (inferior *, int) override;
+
+ void kill () override;
+
+ void mourn_inferior () 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 stopped_by_sw_breakpoint () override;
#endif
+ void follow_exec (inferior *, ptid_t, const char *) override;
+
#ifdef TDP_RFPPWAIT
- void follow_fork (bool, bool) override;
+ void follow_fork (inferior *, ptid_t, target_waitkind, bool, bool) override;
int insert_fork_catchpoint (int) override;
int remove_fork_catchpoint (int) override;
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);
+
+ void resume_one_process (ptid_t, int, enum gdb_signal);
+
+ void stop_process (inferior *);
+
+ /* 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'. The valid
+ register numbers in the register map are relative to REGBASE.
+
+ 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, int regbase, void *regs,
+ size_t size);
+
+ bool store_register_set (struct regcache *regcache, int regnum, int fetch_op,
+ int store_op, const struct regset *regset,
+ int regbase, 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, int regbase, void *regs,
+ size_t size);
+
+ bool store_regset (struct regcache *regcache, int regnum, int note,
+ const struct regset *regset, int regbase, 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, int regbase = 0)
+ {
+ Regset regs;
+ return fetch_register_set (regcache, regnum, fetch_op, regset, regbase,
+ ®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,
+ int regbase = 0)
+ {
+ Regset regs;
+ return store_register_set (regcache, regnum, fetch_op, store_op, regset,
+ regbase, ®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. */
+
+ size_t 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, int regbase = 0)
+ {
+ Regset regs;
+ return fetch_regset (regcache, regnum, note, regset, regbase, ®s,
+ sizeof (regs));
+ }
+
+ template <class Regset>
+ bool store_regset (struct regcache *regcache, int regnum, int note,
+ const struct regset *regset, int regbase = 0)
+ {
+ Regset regs;
+ return store_regset (regcache, regnum, note, regset, regbase, ®s,
+ sizeof (regs));
+ }
+
+private:
+ /* If an event is triggered asynchronously (fake vfork_done events)
+ or occurs when the core is not expecting it, a pending event is
+ created. This event is then returned by a future call to the
+ target wait method. */
+
+ struct pending_event
+ {
+ pending_event (const ptid_t &_ptid, const target_waitstatus &_status) :
+ ptid (_ptid), status (_status) {}
+
+ ptid_t ptid;
+ target_waitstatus status;
+ };
+
+ /* Add a new pending event to the list. */
+
+ void add_pending_event (const ptid_t &ptid, const target_waitstatus &status);
+
+ /* Return true if there is a pending event matching FILTER. */
+
+ bool have_pending_event (ptid_t filter);
+
+ /* Check if there is a pending event for a resumed process matching
+ FILTER. If there is a matching event, the event is removed from
+ the pending list and returned. */
+
+ gdb::optional<pending_event> take_pending_event (ptid_t filter);
+
+ /* List of pending events. */
+
+ std::list<pending_event> m_pending_events;
+
+ /* If this thread has a pending fork event, there is a child process
+ GDB is attached to that the core of GDB doesn't know about.
+ Detach from it. */
+
+ void detach_fork_children (thread_info *tp);
+
+ /* Detach from any child processes associated with pending fork events
+ for a stopped process. Returns true if the process has terminated
+ and false if it is still alive. */
+
+ bool detach_fork_children (inferior *inf);
};
+/* 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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