[PATCH 1/5] Assume that PT_LWPINFO is always defined on FreeBSD hosts.

[John Baldwin <jhb@FreeBSD.org>]

FreeBSD kernels have included support for this since 5.0 release.
The most recent release without support is 4.11 which was released
in January of 2005.

gdb/ChangeLog:

	* fbsd-nat.c: Assume PT_LWPINFO is always defined.
	* fbsd-nat.h: Likewise.
---
 gdb/ChangeLog  | 5 +++++
 gdb/fbsd-nat.c | 4 ----
 gdb/fbsd-nat.h | 2 --
 3 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index fad4608002..687d9aede5 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2020-07-20  John Baldwin  <jhb@FreeBSD.org>
+
+	* fbsd-nat.c: Assume PT_LWPINFO is always defined.
+	* fbsd-nat.h: Likewise.
+
 2020-07-20  John Baldwin  <jhb@FreeBSD.org>
 
 	* fbsd-tdep.c (fbsd_skip_solib_resolver): New function.
diff --git a/gdb/fbsd-nat.c b/gdb/fbsd-nat.c
index a355ebe438..fc7136a97c 100644
--- a/gdb/fbsd-nat.c
+++ b/gdb/fbsd-nat.c
@@ -831,7 +831,6 @@ fbsd_nat_target::xfer_partial (enum target_object object,
     }
 }
 
-#ifdef PT_LWPINFO
 static bool debug_fbsd_lwp;
 static bool debug_fbsd_nat;
 
@@ -1667,7 +1666,6 @@ fbsd_nat_target::set_syscall_catchpoint (int pid, bool needed,
   return 0;
 }
 #endif
-#endif
 
 bool
 fbsd_nat_target::supports_multi_process ()
@@ -1679,7 +1677,6 @@ void _initialize_fbsd_nat ();
 void
 _initialize_fbsd_nat ()
 {
-#ifdef PT_LWPINFO
   add_setshow_boolean_cmd ("fbsd-lwp", class_maintenance,
 			   &debug_fbsd_lwp, _("\
 Set debugging of FreeBSD lwp module."), _("\
@@ -1696,5 +1693,4 @@ Enables printf debugging output."),
 			   NULL,
 			   &show_fbsd_nat_debug,
 			   &setdebuglist, &showdebuglist);
-#endif
 }
diff --git a/gdb/fbsd-nat.h b/gdb/fbsd-nat.h
index b5a62b9212..b49bf8cbaf 100644
--- a/gdb/fbsd-nat.h
+++ b/gdb/fbsd-nat.h
@@ -49,7 +49,6 @@ class fbsd_nat_target : public inf_ptrace_target
 					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;
 
@@ -93,7 +92,6 @@ class fbsd_nat_target : public inf_ptrace_target
   int set_syscall_catchpoint (int, bool, int, gdb::array_view<const int>)
     override;
 #endif
-#endif /* PT_LWPINFO */
 
   bool supports_multi_process () override;
 };
-- 
2.25.1