/* Native-dependent code for FreeBSD.
- Copyright (C) 2004-2020 Free Software Foundation, Inc.
+ Copyright (C) 2004-2022 Free Software Foundation, Inc.
This file is part of GDB.
#define FBSD_NAT_H
#include "inf-ptrace.h"
+#include "regcache.h"
+#include "regset.h"
+#include <osreldate.h>
#include <sys/proc.h>
-#ifdef TRAP_BRKPT
-/* MIPS does not set si_code for SIGTRAP. sparc64 reports
- non-standard values in si_code for SIGTRAP. */
+/* 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
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;
ULONGEST offset, ULONGEST len,
ULONGEST *xfered_len) override;
-#ifdef PT_LWPINFO
bool thread_alive (ptid_t ptid) override;
std::string pid_to_str (ptid_t) override;
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 *, int) 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
#endif
#ifdef TDP_RFPPWAIT
- int follow_fork (int, int) override;
+ void follow_fork (inferior *, ptid_t, target_waitkind, bool, bool) override;
int insert_fork_catchpoint (int) override;
int remove_fork_catchpoint (int) override;
int remove_vfork_catchpoint (int) override;
#endif
-#ifdef PL_FLAG_EXEC
int insert_exec_catchpoint (int) override;
int remove_exec_catchpoint (int) override;
-#endif
#ifdef HAVE_STRUCT_PTRACE_LWPINFO_PL_SYSCALL_CODE
int set_syscall_catchpoint (int, bool, int, gdb::array_view<const int>)
override;
#endif
-#endif /* PT_LWPINFO */
+
+ 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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