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, 4 insertions, 13 deletions

diff --git a/gdb/x86-linux-nat.c b/gdb/x86-linux-nat.c
index 0910d00..90e5c19 100644
--- a/gdb/x86-linux-nat.c
+++ b/gdb/x86-linux-nat.c
@@ -42,10 +42,10 @@
 #include "nat/x86-linux-dregs.h"
 #include "nat/linux-ptrace.h"
 
-/* linux_nat_new_fork hook.   */
+/* linux_nat_target::low_new_fork implementation.  */
 
-static void
-x86_linux_new_fork (struct lwp_info *parent, pid_t child_pid)
+void
+x86_linux_nat_target::low_new_fork (struct lwp_info *parent, pid_t child_pid)
 {
   pid_t parent_pid;
   struct x86_debug_reg_state *parent_state;
@@ -311,10 +311,8 @@ x86_linux_get_thread_area (pid_t pid, void *addr, unsigned int *base_addr)
 }
 
 
-/* Add an x86 GNU/Linux target.  */
-
 void
-x86_linux_add_target (linux_nat_target *t)
+_initialize_x86_linux_nat ()
 {
   /* Initialize the debug register function vectors.  */
   x86_dr_low.set_control = x86_linux_dr_set_control;
@@ -323,11 +321,4 @@ x86_linux_add_target (linux_nat_target *t)
   x86_dr_low.get_status = x86_linux_dr_get_status;
   x86_dr_low.get_control = x86_linux_dr_get_control;
   x86_set_debug_register_length (sizeof (void *));
-
-  add_target (t);
-  linux_nat_set_new_thread (t, x86_linux_new_thread);
-  linux_nat_set_delete_thread (t, x86_linux_delete_thread);
-  linux_nat_set_new_fork (t, x86_linux_new_fork);
-  linux_nat_set_forget_process (t, x86_forget_process);
-  linux_nat_set_prepare_to_resume (t, x86_linux_prepare_to_resume);
 }