linux_nat_target: More low methods

This converts the remaining linux-nat.c hooks low_ methods like had
been started in a previous patch.  The linux_nat_set_foo routines are
all gone with this.

gdb/ChangeLog:
2018-05-02  Pedro Alves  <palves@redhat.com>

	* linux-nat.h (linux_nat_target) <low_new_thread,
	low_delete_thread, low_new_fork, low_forget_process,
	low_prepare_to_resume, low_siginfo_fixup, low_status_is_event>:
	New virtual methods.
	(linux_nat_set_new_thread, linux_nat_set_delete_thread)
	(linux_nat_new_fork_ftype, linux_nat_set_new_fork)
	(linux_nat_forget_process_ftype, linux_nat_set_forget_process)
	(linux_nat_forget_process, linux_nat_set_siginfo_fixup)
	(linux_nat_set_prepare_to_resume, linux_nat_set_status_is_event):
	Delete.
	* linux-fork.c (delete_fork): Adjust to call low method.
	* linux-nat.c (linux_nat_new_thread, linux_nat_delete_thread)
	(linux_nat_new_fork, linux_nat_forget_process_hook)
	(linux_nat_prepare_to_resume, linux_nat_siginfo_fixup)
	(linux_nat_status_is_event):
	(linux_nat_target::follow_fork, lwp_free, add_lwp, detach_one_lwp)
	(linux_resume_one_lwp_throw, linux_handle_extended_wait): Adjust
	to call low method.
	(sigtrap_is_event): Rename to ...
	(linux_nat_target::low_status_is_event): ... this.
	(linux_nat_set_status_is_event): Delete.
	(save_stop_reason, linux_nat_wait_1)
	(linux_nat_target::mourn_inferior, siginfo_fixup): Adjust to call
	low methods.
	(linux_nat_set_new_thread, linux_nat_set_delete_thread)
	(linux_nat_set_new_fork, linux_nat_set_forget_process)
	(linux_nat_forget_process, linux_nat_set_siginfo_fixup)
	(linux_nat_set_prepare_to_resume): Delete.
	* aarch64-linux-nat.c: All linux_nat_set_* callbacks converted to
	low virtual methods.
	* amd64-linux-nat.c: Likewise.
	* arm-linux-nat.c: Likewise.
	* i386-linux-nat.c: Likewise.
	* ia64-linux-nat.c: Likewise.
	* mips-linux-nat.c: Likewise.
	* ppc-linux-nat.c: Likewise.
	* s390-linux-nat.c: Likewise.
	* sparc64-linux-nat.c: Likewise.
	* x86-linux-nat.c: Likewise.
	* x86-linux-nat.h: Include "nat/x86-linux.h".
	(x86_linux_nat_target) <low_new_fork, low_forget_process,
	low_prepare_to_resume, low_new_thread, low_delete_thread>:
	Override methods.

1 files changed, 5 insertions, 4 deletions

diff --git a/gdb/ia64-linux-nat.c b/gdb/ia64-linux-nat.c
index 9f74bb7..64878ec 100644
--- a/gdb/ia64-linux-nat.c
+++ b/gdb/ia64-linux-nat.c
@@ -79,6 +79,9 @@ public:
 			 struct expression *) override;
   int remove_watchpoint (CORE_ADDR, int, enum target_hw_bp_type,
 			 struct expression *) override;
+  /* Override linux_nat_target low methods.  */
+  void low_new_thread (struct lwp_info *lp) override;
+  bool low_status_is_event (int status) override;
 };
 
 static ia64_linux_nat_target the_ia64_linux_nat_target;
@@ -916,8 +919,8 @@ ia64_linux_nat_target::xfer_partial (enum target_object object,
    ia64 does not use gdbarch_decr_pc_after_break so we do not have to make any
    difference for the signals here.  */
 
-static int
-ia64_linux_status_is_event (int status)
+bool
+ia64_linux_nat_target::low_status_is_event (int status)
 {
   return WIFSTOPPED (status) && (WSTOPSIG (status) == SIGTRAP
 				 || WSTOPSIG (status) == SIGILL);
@@ -931,6 +934,4 @@ _initialize_ia64_linux_nat (void)
   /* Register the target.  */
   linux_target = &the_ia64_linux_nat_target;
   add_target (t);
-  linux_nat_set_new_thread (t, ia64_linux_new_thread);
-  linux_nat_set_status_is_event (t, ia64_linux_status_is_event);
 }