Convert default_child_has_foo functions to process_stratum_target methods

This patch converts the default_child_has_foo functions to
process_stratum_target methods.  This simplifies "regular"
non-inf_child process_stratum targets, since they no longer have to
override the target_ops::has_foo methods to call the default_child_foo
functions.  A couple targets need to override the new defaults
(corelow and tracefiles), but it still seems like a good tradeoff,
since those are expected to be little different (target doesn't run).

gdb/ChangeLog:
2018-11-30  Pedro Alves  <palves@redhat.com>

	* corelow.c (core_target) <has_all_memory, has_execution>: New
	overrides.
	* inf-child.c (inf_child_target::has_all_memory)
	(inf_child_target::has_memory, inf_child_target::has_stack)
	(inf_child_target::has_registers)
	(inf_child_target::has_execution): Delete.
	* inf-child.h (inf_child_target) <has_all_memory, has_memory,
	has_stack, has_registers, has_execution>: Delete.
	* process-stratum-target.c
	(process_stratum_target::has_all_memory)
	(process_stratum_target::has_memory)
	(process_stratum_target::has_stack)
	(process_stratum_target::has_registers)
	(process_stratum_target::has_execution): New.
	* process-stratum-target.h (process_stratum_target)
	<has_all_memory, has_memory, has_stack, has_registers,
	has_execution>: New method overrides.
	* ravenscar-thread.c (ravenscar_thread_target) <has_all_memory,
	has_memory, has_stack, has_registers, has_execution>: Delete.
	* remote-sim.c (gdbsim_target) <has_stack, has_registers,
	has_execution>: Delete.
	* remote.c (remote_target) <has_all_memory, has_memory, has_stack,
	has_registers, has_execution>: Delete.
	* target.c (default_child_has_all_memory)
	(default_child_has_memory, default_child_has_stack)
	(default_child_has_registers, default_child_has_execution):
	Delete.
	* target.h (default_child_has_all_memory)
	(default_child_has_memory, default_child_has_stack)
	(default_child_has_registers, default_child_has_execution):
	Delete.
	* tracefile.h (tracefile_target) <has_execution>: New override.

1 files changed, 0 insertions, 54 deletions

diff --git a/gdb/target.c b/gdb/target.c
index 8905ce3..ecfdde9 100644
--- a/gdb/target.c
+++ b/gdb/target.c
@@ -186,60 +186,6 @@ target_command (const char *arg, int from_tty)
 		  gdb_stdout);
 }
 
-/* Default target_has_* methods for process_stratum targets.  */
-
-int
-default_child_has_all_memory ()
-{
-  /* If no inferior selected, then we can't read memory here.  */
-  if (inferior_ptid == null_ptid)
-    return 0;
-
-  return 1;
-}
-
-int
-default_child_has_memory ()
-{
-  /* If no inferior selected, then we can't read memory here.  */
-  if (inferior_ptid == null_ptid)
-    return 0;
-
-  return 1;
-}
-
-int
-default_child_has_stack ()
-{
-  /* If no inferior selected, there's no stack.  */
-  if (inferior_ptid == null_ptid)
-    return 0;
-
-  return 1;
-}
-
-int
-default_child_has_registers ()
-{
-  /* Can't read registers from no inferior.  */
-  if (inferior_ptid == null_ptid)
-    return 0;
-
-  return 1;
-}
-
-int
-default_child_has_execution (ptid_t the_ptid)
-{
-  /* If there's no thread selected, then we can't make it run through
-     hoops.  */
-  if (the_ptid == null_ptid)
-    return 0;
-
-  return 1;
-}
-
-
 int
 target_has_all_memory_1 (void)
 {