More procfs.c simplification

There are only two architectures using procfs.c (i386/SPARC), and none
of their corresponding nat files overrides any target method.  Move
the add_target calls to procfs.c directly.

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

	* i386-sol2-nat.c (_initialize_amd64_sol2_nat): Don't call
	procfs_target/add_target here.
	* procfs.c (procfs_target): Make static.
	(_initialize_procfs): Call add_target here.
	* procfs.h (struct target_ops): Remove forward declaration.
	(procfs_target): Remove declaration.
	* sparc-sol2-nat.c (_initialize_sparc_sol2_nat): Delete.

5 files changed, 15 insertions, 24 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index ae43d48..0d2624b 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,15 @@
 2018-05-02  Pedro Alves  <palves@redhat.com>
 
+	* i386-sol2-nat.c (_initialize_amd64_sol2_nat): Don't call
+	procfs_target/add_target here.
+	* procfs.c (procfs_target): Make static.
+	(_initialize_procfs): Call add_target here.
+	* procfs.h (struct target_ops): Remove forward declaration.
+	(procfs_target): Remove declaration.
+	* sparc-sol2-nat.c (_initialize_sparc_sol2_nat): Delete.
+
+2018-05-02  Pedro Alves  <palves@redhat.com>
+
 	* procfs.c (procfs_stopped_by_watchpoint)
 	(procfs_insert_watchpoint, procfs_remove_watchpoint)
 	(procfs_region_ok_for_hw_watchpoint, procfs_stopped_data_address):
diff --git a/gdb/i386-sol2-nat.c b/gdb/i386-sol2-nat.c
index 359fc32..992ecb7 100644
--- a/gdb/i386-sol2-nat.c
+++ b/gdb/i386-sol2-nat.c
@@ -133,11 +133,6 @@ fill_fpregset (const struct regcache *regcache,
 void
 _initialize_amd64_sol2_nat (void)
 {
-  struct target_ops *t;
-
-  /* Fill in the generic procfs methods.  */
-  t = procfs_target ();
-
 #if defined (PR_MODEL_NATIVE) && (PR_MODEL_NATIVE == PR_MODEL_LP64)
   amd64_native_gregset32_reg_offset = amd64_sol2_gregset32_reg_offset;
   amd64_native_gregset32_num_regs =
@@ -146,6 +141,4 @@ _initialize_amd64_sol2_nat (void)
   amd64_native_gregset64_num_regs =
     ARRAY_SIZE (amd64_sol2_gregset64_reg_offset);
 #endif
-
-  add_target (t);
 }
diff --git a/gdb/procfs.c b/gdb/procfs.c
index 0143f26..51c9ae8 100644
--- a/gdb/procfs.c
+++ b/gdb/procfs.c
@@ -171,7 +171,9 @@ procfs_auxv_parse (struct target_ops *ops, gdb_byte **readptr,
 }
 #endif
 
-struct target_ops *
+/* Create a procfs target.  */
+
+static struct target_ops *
 procfs_target (void)
 {
   struct target_ops *t = inf_child_target ();
@@ -3770,6 +3772,8 @@ _initialize_procfs (void)
 	   _("Cancel a trace of entries into the syscall."));
   add_com ("proc-untrace-exit", no_class, proc_untrace_sysexit_cmd,
 	   _("Cancel a trace of exits from the syscall."));
+
+  add_target (procfs_target ());
 }
 
 /* =================== END, GDB  "MODULE" =================== */
diff --git a/gdb/procfs.h b/gdb/procfs.h
index beeb876..e66c674 100644
--- a/gdb/procfs.h
+++ b/gdb/procfs.h
@@ -17,13 +17,6 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-struct target_ops;
-
-/* Create a prototype generic procfs target.  The client can override
-   it with local methods.  */
-
-extern struct target_ops *procfs_target (void);
-
 /* Return a ptid for which we guarantee we will be able to find a
    'live' procinfo.  */
 
diff --git a/gdb/sparc-sol2-nat.c b/gdb/sparc-sol2-nat.c
index 482050d..2c0d561 100644
--- a/gdb/sparc-sol2-nat.c
+++ b/gdb/sparc-sol2-nat.c
@@ -97,12 +97,3 @@ fill_fpregset (const struct regcache *regcache,
 {
   sparc_collect_fpregset (&sparc_sol2_fpregmap, regcache, regnum, fpregs);
 }
-
-void
-_initialize_sparc_sol2_nat (void)
-{
-  struct target_ops *t;
-
-  t = procfs_target ();
-  add_target (t);
-}