[1/4] target_stack -> current_top_target() throughout

Message ID 20180528161041.32497-2-palves@redhat.com
State New
Headers show
Series
  • Change target stack representation
Related show

Commit Message

Pedro Alves May 28, 2018, 4:10 p.m.
The recent C++ification of target_ops replaced references to the old
"current_target" squashed target throughout with references to a
"target_stack" pointer.  I had picked the "target_stack" name very
early in the multi-target work, and managed to stick with it, even
though it's a bit of a misnomer, since it isn't really a "target
stack" object, but a pointer into the current top target in the stack.
As I'm splitting more pieces off of the multi-target branch, I've come
to think that it's better to rename it now.  A following patch will
introduce a new class to represent a target stack, and "target_stack"
would be _its_ ideal name.  (In the branch, the class is called
a_target_stack to work around the clash.)

Thus this commit renames target_target to current_top_target and
replaces all references throughout.  Also, while at it,
current_top_target is made a function instead of a pointer, to make it
possible to change its internal implementation without leaking
implementation details out.  In a couple patches, the implementation
of the function will change to refer to a target stack object, and
then further down the multi-target work, it'll change again to find
the right target stack for the current inferior.

gdb/ChangeLog:
yyyy-mm-dd  Pedro Alves  <palves@redhat.com>

	* target.h (target_stack): Delete.
	(current_top_target): Declare function.
	* target.c (target_stack): Delete.
	(g_current_top_target): New.
	(current_top_target): New function.
	* auxv.c: Use current_top_target instead of target_stack
	throughout.
	* avr-tdep.c: Likewise.
	* breakpoint.c: Likewise.
	* corefile.c: Likewise.
	* elfread.c: Likewise.
	* eval.c: Likewise.
	* exceptions.c: Likewise.
	* frame.c: Likewise.
	* gdbarch-selftests.c: Likewise.
	* gnu-v3-abi.c: Likewise.
	* ia64-tdep.c: Likewise.
	* ia64-vms-tdep.c: Likewise.
	* infcall.c: Likewise.
	* infcmd.c: Likewise.
	* infrun.c: Likewise.
	* linespec.c: Likewise.
	* linux-tdep.c: Likewise.
	* minsyms.c: Likewise.
	* ppc-linux-nat.c: Likewise.
	* ppc-linux-tdep.c: Likewise.
	* procfs.c: Likewise.
	* regcache.c: Likewise.
	* remote.c: Likewise.
	* rs6000-tdep.c: Likewise.
	* s390-linux-nat.c: Likewise.
	* s390-tdep.c: Likewise.
	* solib-aix.c: Likewise.
	* solib-darwin.c: Likewise.
	* solib-dsbt.c: Likewise.
	* solib-spu.c: Likewise.
	* solib-svr4.c: Likewise.
	* solib-target.c: Likewise.
	* sparc-tdep.c: Likewise.
	* sparc64-tdep.c: Likewise.
	* spu-tdep.c: Likewise.
	* symfile.c: Likewise.
	* symtab.c: Likewise.
	* target-descriptions.c: Likewise.
	* target-memory.c: Likewise.
	* target.c: Likewise.
	* target.h: Likewise.
	* tracefile-tfile.c: Likewise.
	* tracepoint.c: Likewise.
	* valops.c: Likewise.
	* valprint.c: Likewise.
	* value.c: Likewise.
	* windows-tdep.c: Likewise.
	* mi/mi-main.c: Likewise.
---
 gdb/auxv.c                |   4 +-
 gdb/avr-tdep.c            |   4 +-
 gdb/breakpoint.c          |   7 +-
 gdb/corefile.c            |   2 +-
 gdb/elfread.c             |   9 +-
 gdb/eval.c                |   2 +-
 gdb/exceptions.c          |   2 +-
 gdb/frame.c               |   2 +-
 gdb/gdbarch-selftests.c   |   2 +-
 gdb/gnu-v3-abi.c          |   2 +-
 gdb/ia64-tdep.c           |   2 +-
 gdb/ia64-vms-tdep.c       |   2 +-
 gdb/infcall.c             |   7 +-
 gdb/infcmd.c              |  18 ++--
 gdb/infrun.c              |  12 +--
 gdb/linespec.c            |   2 +-
 gdb/linux-tdep.c          |  19 ++--
 gdb/mi/mi-main.c          |   8 +-
 gdb/minsyms.c             |   5 +-
 gdb/ppc-linux-nat.c       |   2 +-
 gdb/ppc-linux-tdep.c      |   4 +-
 gdb/procfs.c              |   2 +-
 gdb/regcache.c            |   4 +-
 gdb/remote.c              |  12 +--
 gdb/rs6000-tdep.c         |   2 +-
 gdb/s390-linux-nat.c      |   2 +-
 gdb/s390-tdep.c           |   2 +-
 gdb/solib-aix.c           |   2 +-
 gdb/solib-darwin.c        |   4 +-
 gdb/solib-dsbt.c          |   4 +-
 gdb/solib-spu.c           |   6 +-
 gdb/solib-svr4.c          |  23 ++---
 gdb/solib-target.c        |   3 +-
 gdb/sparc-tdep.c          |   2 +-
 gdb/sparc64-tdep.c        |   4 +-
 gdb/spu-tdep.c            |  32 +++----
 gdb/symfile.c             |   2 +-
 gdb/symtab.c              |   7 +-
 gdb/target-descriptions.c |   4 +-
 gdb/target-memory.c       |   4 +-
 gdb/target.c              | 214 ++++++++++++++++++++++++----------------------
 gdb/target.h              | 160 +++++++++++++++++-----------------
 gdb/tracefile-tfile.c     |   2 +-
 gdb/tracepoint.c          |   2 +-
 gdb/valops.c              |   4 +-
 gdb/valprint.c            |   2 +-
 gdb/value.c               |   2 +-
 gdb/windows-tdep.c        |   2 +-
 48 files changed, 321 insertions(+), 305 deletions(-)

-- 
2.14.3

Comments

Tom Tromey May 28, 2018, 10:19 p.m. | #1
>>>>> "Pedro" == Pedro Alves <palves@redhat.com> writes:


I didn't really read this patch, since after a few glances it looked
mechanical.  But I did see a typo in the commit message

Pedro> Thus this commit renames target_target to current_top_target and

I think target_target -> target_stack here.

Tom
Pedro Alves May 29, 2018, 2:58 p.m. | #2
On 05/28/2018 11:19 PM, Tom Tromey wrote:
>>>>>> "Pedro" == Pedro Alves <palves@redhat.com> writes:

> 

> I didn't really read this patch, since after a few glances it looked

> mechanical.  But I did see a typo in the commit message

> 

> Pedro> Thus this commit renames target_target to current_top_target and

> 

> I think target_target -> target_stack here.


Whoops, thanks.  Fixed locally.

Pedro Alves

Patch

diff --git a/gdb/auxv.c b/gdb/auxv.c
index 86a1ba88a6..2afa136efe 100644
--- a/gdb/auxv.c
+++ b/gdb/auxv.c
@@ -291,7 +291,7 @@  target_auxv_parse (gdb_byte **readptr,
   if (gdbarch_auxv_parse_p (gdbarch))
     return gdbarch_auxv_parse (gdbarch, readptr, endptr, typep, valp);
 
-  return target_stack->auxv_parse (readptr, endptr, typep, valp);
+  return current_top_target ()->auxv_parse (readptr, endptr, typep, valp);
 }
 
 
@@ -549,7 +549,7 @@  info_auxv_command (const char *cmd, int from_tty)
     error (_("The program has no auxiliary information now."));
   else
     {
-      int ents = fprint_target_auxv (gdb_stdout, target_stack);
+      int ents = fprint_target_auxv (gdb_stdout, current_top_target ());
 
       if (ents < 0)
 	error (_("No auxiliary vector found, or failed reading it."));
diff --git a/gdb/avr-tdep.c b/gdb/avr-tdep.c
index 5aa61ba2d9..74602c13ec 100644
--- a/gdb/avr-tdep.c
+++ b/gdb/avr-tdep.c
@@ -1555,7 +1555,7 @@  avr_io_reg_read_command (const char *args, int from_tty)
 
   /* Find out how many io registers the target has.  */
   gdb::optional<gdb::byte_vector> buf
-    = target_read_alloc (target_stack, TARGET_OBJECT_AVR, "avr.io_reg");
+    = target_read_alloc (current_top_target (), TARGET_OBJECT_AVR, "avr.io_reg");
 
   if (!buf)
     {
@@ -1589,7 +1589,7 @@  avr_io_reg_read_command (const char *args, int from_tty)
         j = nreg - i;           /* last block is less than 8 registers */
 
       snprintf (query, sizeof (query) - 1, "avr.io_reg:%x,%x", i, j);
-      buf = target_read_alloc (target_stack, TARGET_OBJECT_AVR, query);
+      buf = target_read_alloc (current_top_target (), TARGET_OBJECT_AVR, query);
 
       if (!buf)
         {
diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c
index 721afd2c04..4fbf118ecd 100644
--- a/gdb/breakpoint.c
+++ b/gdb/breakpoint.c
@@ -3489,7 +3489,8 @@  create_exception_master_breakpoint (void)
 	}
 
       addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym);
-      addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, target_stack);
+      addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr,
+						 current_top_target ());
       b = create_internal_breakpoint (gdbarch, addr, bp_exception_master,
 				      &internal_breakpoint_ops);
       initialize_explicit_location (&explicit_loc);
@@ -4748,7 +4749,7 @@  watchpoints_triggered (struct target_waitstatus *ws)
       return 0;
     }
 
-  if (!target_stopped_data_address (target_stack, &addr))
+  if (!target_stopped_data_address (current_top_target (), &addr))
     {
       /* We were stopped by a watchpoint, but we don't know where.
 	 Mark all watchpoints as unknown.  */
@@ -4788,7 +4789,7 @@  watchpoints_triggered (struct target_waitstatus *ws)
 		  }
 	      }
 	    /* Exact match not required.  Within range is sufficient.  */
-	    else if (target_watchpoint_addr_within_range (target_stack,
+	    else if (target_watchpoint_addr_within_range (current_top_target (),
 							 addr, loc->address,
 							 loc->length))
 	      {
diff --git a/gdb/corefile.c b/gdb/corefile.c
index 5f66ead897..0e348938fa 100644
--- a/gdb/corefile.c
+++ b/gdb/corefile.c
@@ -214,7 +214,7 @@  read_memory_object (enum target_object object, CORE_ADDR memaddr,
       enum target_xfer_status status;
       ULONGEST xfered_len;
 
-      status = target_xfer_partial (target_stack, object, NULL,
+      status = target_xfer_partial (current_top_target (), object, NULL,
 				    myaddr + xfered, NULL,
 				    memaddr + xfered, len - xfered,
 				    &xfered_len);
diff --git a/gdb/elfread.c b/gdb/elfread.c
index b4b4a1b24c..c253b5a039 100644
--- a/gdb/elfread.c
+++ b/gdb/elfread.c
@@ -836,7 +836,8 @@  elf_gnu_ifunc_resolve_by_got (const char *name, CORE_ADDR *addr_p)
       if (target_read_memory (pointer_address, buf, ptr_size) != 0)
 	continue;
       addr = extract_typed_address (buf, ptr_type);
-      addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, target_stack);
+      addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr,
+						 current_top_target ());
       addr = gdbarch_addr_bits_remove (gdbarch, addr);
 
       if (elf_gnu_ifunc_record_cache (name, addr))
@@ -903,12 +904,12 @@  elf_gnu_ifunc_resolve_addr (struct gdbarch *gdbarch, CORE_ADDR pc)
      parameter.  FUNCTION is the function entry address.  ADDRESS may be a
      function descriptor.  */
 
-  target_auxv_search (target_stack, AT_HWCAP, &hwcap);
+  target_auxv_search (current_top_target (), AT_HWCAP, &hwcap);
   hwcap_val = value_from_longest (builtin_type (gdbarch)
 				  ->builtin_unsigned_long, hwcap);
   address_val = call_function_by_hand (function, NULL, 1, &hwcap_val);
   address = value_as_address (address_val);
-  address = gdbarch_convert_from_func_ptr_addr (gdbarch, address, target_stack);
+  address = gdbarch_convert_from_func_ptr_addr (gdbarch, address, current_top_target ());
   address = gdbarch_addr_bits_remove (gdbarch, address);
 
   if (name_at_pc)
@@ -1015,7 +1016,7 @@  elf_gnu_ifunc_resolver_return_stop (struct breakpoint *b)
   resolved_address = value_as_address (value);
   resolved_pc = gdbarch_convert_from_func_ptr_addr (gdbarch,
 						    resolved_address,
-						    target_stack);
+						    current_top_target ());
   resolved_pc = gdbarch_addr_bits_remove (gdbarch, resolved_pc);
 
   gdb_assert (current_program_space == b->pspace || b->pspace == NULL);
diff --git a/gdb/eval.c b/gdb/eval.c
index 5bd6e2cbfe..4b90d2f6b7 100644
--- a/gdb/eval.c
+++ b/gdb/eval.c
@@ -1748,7 +1748,7 @@  evaluate_subexp_standard (struct type *expect_type,
 	    /* The address might point to a function descriptor;
 	       resolve it to the actual code address instead.  */
 	    addr = gdbarch_convert_from_func_ptr_addr (exp->gdbarch, addr,
-						       target_stack);
+						       current_top_target ());
 
 	    /* Is it a high_level symbol?  */
 	    sym = find_pc_function (addr);
diff --git a/gdb/exceptions.c b/gdb/exceptions.c
index 5abbaf2137..54aab704b7 100644
--- a/gdb/exceptions.c
+++ b/gdb/exceptions.c
@@ -43,7 +43,7 @@  print_flush (void)
      stack, the NULL check is needed here because we can get here very
      early during startup, before the target stack is first
      initialized.  */
-  if (target_stack != NULL && target_supports_terminal_ours ())
+  if (current_top_target () != NULL && target_supports_terminal_ours ())
     {
       term_state.emplace ();
       target_terminal::ours_for_output ();
diff --git a/gdb/frame.c b/gdb/frame.c
index c0f6e64dfc..9d4546edcf 100644
--- a/gdb/frame.c
+++ b/gdb/frame.c
@@ -2222,7 +2222,7 @@  inside_main_func (struct frame_info *this_frame)
      returned.  */
   maddr = gdbarch_convert_from_func_ptr_addr (get_frame_arch (this_frame),
 					      BMSYMBOL_VALUE_ADDRESS (msymbol),
-					      target_stack);
+					      current_top_target ());
   return maddr == get_frame_func (this_frame);
 }
 
diff --git a/gdb/gdbarch-selftests.c b/gdb/gdbarch-selftests.c
index 23afe3d75e..73a31244b4 100644
--- a/gdb/gdbarch-selftests.c
+++ b/gdb/gdbarch-selftests.c
@@ -71,7 +71,7 @@  register_to_value_test (struct gdbarch *gdbarch)
 
   /* Error out if debugging something, because we're going to push the
      test target, which would pop any existing target.  */
-  if (target_stack->to_stratum >= process_stratum)
+  if (current_top_target ()->to_stratum >= process_stratum)
    error (_("target already pushed"));
 
   /* Create a mock environment.  An inferior with a thread, with a
diff --git a/gdb/gnu-v3-abi.c b/gdb/gnu-v3-abi.c
index ddbec13891..3cef80c1ec 100644
--- a/gdb/gnu-v3-abi.c
+++ b/gdb/gnu-v3-abi.c
@@ -1217,7 +1217,7 @@  gnuv3_skip_trampoline (struct frame_info *frame, CORE_ADDR stop_pc)
      of the real function from the function descriptor before passing on
      the address to other layers of GDB.  */
   func_addr = gdbarch_convert_from_func_ptr_addr (gdbarch, method_stop_pc,
-						  target_stack);
+						  current_top_target ());
   if (func_addr != 0)
     method_stop_pc = func_addr;
 
diff --git a/gdb/ia64-tdep.c b/gdb/ia64-tdep.c
index 26e112e7bc..bf10eae92e 100644
--- a/gdb/ia64-tdep.c
+++ b/gdb/ia64-tdep.c
@@ -2660,7 +2660,7 @@  getunwind_table (gdb_byte **buf_p)
      we should find a way to override the corefile layer's
      xfer_partial method.  */
 
-  x = target_read_alloc (target_stack, TARGET_OBJECT_UNWIND_TABLE,
+  x = target_read_alloc (current_top_target (), TARGET_OBJECT_UNWIND_TABLE,
 			 NULL, buf_p);
 
   return x;
diff --git a/gdb/ia64-vms-tdep.c b/gdb/ia64-vms-tdep.c
index 9b78576608..e2d40e2079 100644
--- a/gdb/ia64-vms-tdep.c
+++ b/gdb/ia64-vms-tdep.c
@@ -42,7 +42,7 @@  ia64_vms_find_proc_info_x (unw_addr_space_t as, unw_word_t ip,
   CORE_ADDR table_addr;
   unsigned int info_len;
 
-  res = target_read (target_stack, TARGET_OBJECT_OPENVMS_UIB,
+  res = target_read (current_top_target (), TARGET_OBJECT_OPENVMS_UIB,
                      annex + 2, buf, 0, sizeof (buf));
 
   if (res != sizeof (buf))
diff --git a/gdb/infcall.c b/gdb/infcall.c
index b13f5b61d9..c20ab6f877 100644
--- a/gdb/infcall.c
+++ b/gdb/infcall.c
@@ -256,7 +256,7 @@  find_function_addr (struct value *function,
       if (TYPE_CODE (ftype) == TYPE_CODE_FUNC
 	  || TYPE_CODE (ftype) == TYPE_CODE_METHOD)
 	funaddr = gdbarch_convert_from_func_ptr_addr (gdbarch, funaddr,
-						      target_stack);
+						      current_top_target ());
     }
   if (TYPE_CODE (ftype) == TYPE_CODE_FUNC
       || TYPE_CODE (ftype) == TYPE_CODE_METHOD)
@@ -307,8 +307,9 @@  find_function_addr (struct value *function,
 
 	      funaddr = value_as_address (value_addr (function));
 	      nfunaddr = funaddr;
-	      funaddr = gdbarch_convert_from_func_ptr_addr (gdbarch, funaddr,
-							    target_stack);
+	      funaddr
+		= gdbarch_convert_from_func_ptr_addr (gdbarch, funaddr,
+						      current_top_target ());
 	      if (funaddr != nfunaddr)
 		found_descriptor = 1;
 	    }
diff --git a/gdb/infcmd.c b/gdb/infcmd.c
index af3fa5fd1a..b3f0238eba 100644
--- a/gdb/infcmd.c
+++ b/gdb/infcmd.c
@@ -660,7 +660,7 @@  run_command_1 (const char *args, int from_tty, enum run_how run_how)
 
   /* Pass zero for FROM_TTY, because at this point the "run" command
      has done its thing; now we are setting up the running program.  */
-  post_create_inferior (target_stack, 0);
+  post_create_inferior (current_top_target (), 0);
 
   /* Queue a pending event so that the program stops immediately.  */
   if (run_how == RUN_STOP_AT_FIRST_INSN)
@@ -896,7 +896,7 @@  continue_command (const char *args, int from_tty)
       ensure_not_running ();
     }
 
-  prepare_execution_command (target_stack, async_exec);
+  prepare_execution_command (current_top_target (), async_exec);
 
   if (from_tty)
     printf_filtered (_("Continuing.\n"));
@@ -1043,7 +1043,7 @@  step_1 (int skip_subroutines, int single_inst, const char *count_string)
     = strip_bg_char (count_string, &async_exec);
   count_string = stripped.get ();
 
-  prepare_execution_command (target_stack, async_exec);
+  prepare_execution_command (current_top_target (), async_exec);
 
   count = count_string ? parse_and_eval_long (count_string) : 1;
 
@@ -1232,7 +1232,7 @@  jump_command (const char *arg, int from_tty)
   gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec);
   arg = stripped.get ();
 
-  prepare_execution_command (target_stack, async_exec);
+  prepare_execution_command (current_top_target (), async_exec);
 
   if (!arg)
     error_no_arg (_("starting address"));
@@ -1312,7 +1312,7 @@  signal_command (const char *signum_exp, int from_tty)
     = strip_bg_char (signum_exp, &async_exec);
   signum_exp = stripped.get ();
 
-  prepare_execution_command (target_stack, async_exec);
+  prepare_execution_command (current_top_target (), async_exec);
 
   if (!signum_exp)
     error_no_arg (_("signal number"));
@@ -1585,7 +1585,7 @@  until_command (const char *arg, int from_tty)
   gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec);
   arg = stripped.get ();
 
-  prepare_execution_command (target_stack, async_exec);
+  prepare_execution_command (current_top_target (), async_exec);
 
   if (arg)
     until_break_command (arg, from_tty, 0);
@@ -1610,7 +1610,7 @@  advance_command (const char *arg, int from_tty)
   gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec);
   arg = stripped.get ();
 
-  prepare_execution_command (target_stack, async_exec);
+  prepare_execution_command (current_top_target (), async_exec);
 
   until_break_command (arg, from_tty, 1);
 }
@@ -1990,7 +1990,7 @@  finish_command (const char *arg, int from_tty)
   gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec);
   arg = stripped.get ();
 
-  prepare_execution_command (target_stack, async_exec);
+  prepare_execution_command (current_top_target (), async_exec);
 
   if (arg)
     error (_("The \"finish\" command does not take any arguments."));
@@ -2686,7 +2686,7 @@  setup_inferior (int from_tty)
   /* Take any necessary post-attaching actions for this platform.  */
   target_post_attach (ptid_get_pid (inferior_ptid));
 
-  post_create_inferior (target_stack, from_tty);
+  post_create_inferior (current_top_target (), from_tty);
 }
 
 /* What to do after the first program stops after attaching.  */
diff --git a/gdb/infrun.c b/gdb/infrun.c
index df19478ef3..94a88c13d7 100644
--- a/gdb/infrun.c
+++ b/gdb/infrun.c
@@ -3240,7 +3240,7 @@  start_remote (int from_tty)
   /* Now that the inferior has stopped, do any bookkeeping like
      loading shared libraries.  We want to do this before normal_stop,
      so that the displayed frame is up to date.  */
-  post_create_inferior (target_stack, from_tty);
+  post_create_inferior (current_top_target (), from_tty);
 
   normal_stop ();
 }
@@ -5697,7 +5697,7 @@  handle_signal_stop (struct execution_control_state *ecs)
 
 	  fprintf_unfiltered (gdb_stdlog, "infrun: stopped by watchpoint\n");
 
-	  if (target_stopped_data_address (target_stack, &addr))
+	  if (target_stopped_data_address (current_top_target (), &addr))
             fprintf_unfiltered (gdb_stdlog,
                                 "infrun: stopped data address = %s\n",
                                 paddress (gdbarch, addr));
@@ -8744,7 +8744,7 @@  siginfo_value_read (struct value *v)
   validate_registers_access ();
 
   transferred =
-    target_read (target_stack, TARGET_OBJECT_SIGNAL_INFO,
+    target_read (current_top_target (), TARGET_OBJECT_SIGNAL_INFO,
 		 NULL,
 		 value_contents_all_raw (v),
 		 value_offset (v),
@@ -8766,7 +8766,7 @@  siginfo_value_write (struct value *v, struct value *fromval)
      vice versa.  */
   validate_registers_access ();
 
-  transferred = target_write (target_stack,
+  transferred = target_write (current_top_target (),
 			      TARGET_OBJECT_SIGNAL_INFO,
 			      NULL,
 			      value_contents_all_raw (fromval),
@@ -8845,7 +8845,7 @@  save_infcall_suspend_state (void)
       siginfo_data = (gdb_byte *) xmalloc (len);
       back_to = make_cleanup (xfree, siginfo_data);
 
-      if (target_read (target_stack, TARGET_OBJECT_SIGNAL_INFO, NULL,
+      if (target_read (current_top_target (), TARGET_OBJECT_SIGNAL_INFO, NULL,
 		       siginfo_data, 0, len) == len)
 	discard_cleanups (back_to);
       else
@@ -8895,7 +8895,7 @@  restore_infcall_suspend_state (struct infcall_suspend_state *inf_state)
       struct type *type = gdbarch_get_siginfo_type (gdbarch);
 
       /* Errors ignored.  */
-      target_write (target_stack, TARGET_OBJECT_SIGNAL_INFO, NULL,
+      target_write (current_top_target (), TARGET_OBJECT_SIGNAL_INFO, NULL,
 		    inf_state->siginfo_data, 0, TYPE_LENGTH (type));
     }
 
diff --git a/gdb/linespec.c b/gdb/linespec.c
index 835650750c..763f4ed4a5 100644
--- a/gdb/linespec.c
+++ b/gdb/linespec.c
@@ -2303,7 +2303,7 @@  convert_linespec_to_sals (struct linespec_state *state, linespec_p ls)
 				= (gdbarch_convert_from_func_ptr_addr
 				   (gdbarch,
 				    msym_addr,
-				    target_stack));
+				    current_top_target ()));
 			    }
 
 			  if (msym_addr == addr)
diff --git a/gdb/linux-tdep.c b/gdb/linux-tdep.c
index 4d3919df31..5a40a6802a 100644
--- a/gdb/linux-tdep.c
+++ b/gdb/linux-tdep.c
@@ -402,8 +402,8 @@  linux_is_uclinux (void)
 {
   CORE_ADDR dummy;
 
-  return (target_auxv_search (target_stack, AT_NULL, &dummy) > 0
-	  && target_auxv_search (target_stack, AT_PAGESZ, &dummy) == 0);
+  return (target_auxv_search (current_top_target (), AT_NULL, &dummy) > 0
+	  && target_auxv_search (current_top_target (), AT_PAGESZ, &dummy) == 0);
 }
 
 static int
@@ -1423,7 +1423,8 @@  linux_spu_make_corefile_notes (bfd *obfd, char *note_data, int *note_size)
 
   /* Determine list of SPU ids.  */
   gdb::optional<gdb::byte_vector>
-    spu_ids = target_read_alloc (target_stack, TARGET_OBJECT_SPU, NULL);
+    spu_ids = target_read_alloc (current_top_target (),
+				 TARGET_OBJECT_SPU, NULL);
 
   if (!spu_ids)
     return note_data;
@@ -1439,7 +1440,7 @@  linux_spu_make_corefile_notes (bfd *obfd, char *note_data, int *note_size)
 
 	  xsnprintf (annex, sizeof annex, "%d/%s", fd, spu_files[j]);
 	  gdb::optional<gdb::byte_vector> spu_data
-	    = target_read_alloc (target_stack, TARGET_OBJECT_SPU, annex);
+	    = target_read_alloc (current_top_target (), TARGET_OBJECT_SPU, annex);
 
 	  if (spu_data && !spu_data->empty ())
 	    {
@@ -1661,7 +1662,7 @@  linux_get_siginfo_data (thread_info *thread, struct gdbarch *gdbarch)
 
   gdb::byte_vector buf (TYPE_LENGTH (siginfo_type));
 
-  bytes_read = target_read (target_stack, TARGET_OBJECT_SIGNAL_INFO, NULL,
+  bytes_read = target_read (current_top_target (), TARGET_OBJECT_SIGNAL_INFO, NULL,
 			    buf.data (), 0, TYPE_LENGTH (siginfo_type));
   if (bytes_read != TYPE_LENGTH (siginfo_type))
     buf.clear ();
@@ -1970,7 +1971,7 @@  linux_make_corefile_notes (struct gdbarch *gdbarch, bfd *obfd, int *note_size)
 
   /* Auxillary vector.  */
   gdb::optional<gdb::byte_vector> auxv =
-    target_read_alloc (target_stack, TARGET_OBJECT_AUXV, NULL);
+    target_read_alloc (current_top_target (), TARGET_OBJECT_AUXV, NULL);
   if (auxv && !auxv->empty ())
     {
       note_data = elfcore_write_note (obfd, note_data, note_size,
@@ -2253,7 +2254,7 @@  linux_vsyscall_range_raw (struct gdbarch *gdbarch, struct mem_range *range)
   char filename[100];
   long pid;
 
-  if (target_auxv_search (target_stack, AT_SYSINFO_EHDR, &range->start) <= 0)
+  if (target_auxv_search (current_top_target (), AT_SYSINFO_EHDR, &range->start) <= 0)
     return 0;
 
   /* It doesn't make sense to access the host's /proc when debugging a
@@ -2443,14 +2444,14 @@  linux_displaced_step_location (struct gdbarch *gdbarch)
      local-store address and is thus not usable as displaced stepping
      location.  The auxiliary vector gets us the PowerPC-side entry
      point address instead.  */
-  if (target_auxv_search (target_stack, AT_ENTRY, &addr) <= 0)
+  if (target_auxv_search (current_top_target (), AT_ENTRY, &addr) <= 0)
     throw_error (NOT_SUPPORTED_ERROR,
 		 _("Cannot find AT_ENTRY auxiliary vector entry."));
 
   /* Make certain that the address points at real code, and not a
      function descriptor.  */
   addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr,
-					     target_stack);
+					     current_top_target ());
 
   /* Inferior calls also use the entry point as a breakpoint location.
      We don't want displaced stepping to interfere with those
diff --git a/gdb/mi/mi-main.c b/gdb/mi/mi-main.c
index 76e783daf9..14b3e6853a 100644
--- a/gdb/mi/mi-main.c
+++ b/gdb/mi/mi-main.c
@@ -266,7 +266,7 @@  proceed_thread_callback (struct thread_info *thread, void *arg)
 static void
 exec_continue (char **argv, int argc)
 {
-  prepare_execution_command (target_stack, mi_async_p ());
+  prepare_execution_command (current_top_target (), mi_async_p ());
 
   if (non_stop)
     {
@@ -1353,8 +1353,8 @@  mi_cmd_data_read_memory (const char *command, char **argv, int argc)
 
   gdb::byte_vector mbuf (total_bytes);
 
-  nr_bytes = target_read (target_stack, TARGET_OBJECT_MEMORY, NULL, mbuf.data (),
-			  addr, total_bytes);
+  nr_bytes = target_read (current_top_target (), TARGET_OBJECT_MEMORY, NULL,
+			  mbuf.data (), addr, total_bytes);
   if (nr_bytes <= 0)
     error (_("Unable to read memory."));
 
@@ -1473,7 +1473,7 @@  mi_cmd_data_read_memory_bytes (const char *command, char **argv, int argc)
   length = atol (argv[1]);
 
   std::vector<memory_read_result> result
-    = read_memory_robust (target_stack, addr, length);
+    = read_memory_robust (current_top_target (), addr, length);
 
   if (result.size () == 0)
     error (_("Unable to read memory."));
diff --git a/gdb/minsyms.c b/gdb/minsyms.c
index b98f121d5f..46d6d09153 100644
--- a/gdb/minsyms.c
+++ b/gdb/minsyms.c
@@ -73,8 +73,9 @@  msymbol_is_function (struct objfile *objfile, minimal_symbol *minsym,
     case mst_data_gnu_ifunc:
       {
 	struct gdbarch *gdbarch = get_objfile_arch (objfile);
-	CORE_ADDR pc = gdbarch_convert_from_func_ptr_addr (gdbarch, msym_addr,
-							   target_stack);
+	CORE_ADDR pc
+	  = gdbarch_convert_from_func_ptr_addr (gdbarch, msym_addr,
+						current_top_target ());
 	if (pc != msym_addr)
 	  {
 	    if (func_address_p != NULL)
diff --git a/gdb/ppc-linux-nat.c b/gdb/ppc-linux-nat.c
index eb21f91c13..a5984dfba3 100644
--- a/gdb/ppc-linux-nat.c
+++ b/gdb/ppc-linux-nat.c
@@ -1170,7 +1170,7 @@  ppc_linux_get_hwcap (void)
 {
   CORE_ADDR field;
 
-  if (target_auxv_search (target_stack, AT_HWCAP, &field) != 1)
+  if (target_auxv_search (current_top_target (), AT_HWCAP, &field) != 1)
     return 0;
 
   return field;
diff --git a/gdb/ppc-linux-tdep.c b/gdb/ppc-linux-tdep.c
index 5716f82810..bf111b9d2c 100644
--- a/gdb/ppc-linux-tdep.c
+++ b/gdb/ppc-linux-tdep.c
@@ -1271,7 +1271,7 @@  ppc_linux_spe_context (int wordsize, enum bfd_endian byte_order,
   /* Look up cached address of thread-local variable.  */
   if (!ptid_equal (spe_context_cache_ptid, inferior_ptid))
     {
-      struct target_ops *target = target_stack;
+      struct target_ops *target = current_top_target ();
 
       TRY
 	{
@@ -1431,7 +1431,7 @@  ppu2spu_sniffer (const struct frame_unwind *self,
 	return 0;
 
       xsnprintf (annex, sizeof annex, "%d/regs", data.id);
-      if (target_read (target_stack, TARGET_OBJECT_SPU, annex,
+      if (target_read (current_top_target (), TARGET_OBJECT_SPU, annex,
 		       data.gprs, 0, sizeof data.gprs)
 	  == sizeof data.gprs)
 	{
diff --git a/gdb/procfs.c b/gdb/procfs.c
index 70619f1c15..6c76b4e82c 100644
--- a/gdb/procfs.c
+++ b/gdb/procfs.c
@@ -3894,7 +3894,7 @@  procfs_target::make_corefile_notes (bfd *obfd, int *note_size)
 			     &thread_args);
   note_data = thread_args.note_data;
 
-  auxv_len = target_read_alloc (target_stack, TARGET_OBJECT_AUXV,
+  auxv_len = target_read_alloc (current_top_target (), TARGET_OBJECT_AUXV,
 				NULL, &auxv);
   if (auxv_len > 0)
     {
diff --git a/gdb/regcache.c b/gdb/regcache.c
index 83bcbd22a3..24627c96f7 100644
--- a/gdb/regcache.c
+++ b/gdb/regcache.c
@@ -1554,7 +1554,7 @@  cooked_read_test (struct gdbarch *gdbarch)
 {
   /* Error out if debugging something, because we're going to push the
      test target, which would pop any existing target.  */
-  if (target_stack->to_stratum >= process_stratum)
+  if (current_top_target ()->to_stratum >= process_stratum)
     error (_("target already pushed"));
 
   /* Create a mock environment.  An inferior with a thread, with a
@@ -1728,7 +1728,7 @@  cooked_write_test (struct gdbarch *gdbarch)
 {
   /* Error out if debugging something, because we're going to push the
      test target, which would pop any existing target.  */
-  if (target_stack->to_stratum >= process_stratum)
+  if (current_top_target ()->to_stratum >= process_stratum)
     error (_("target already pushed"));
 
   /* Create a mock environment.  A process_stratum target pushed.  */
diff --git a/gdb/remote.c b/gdb/remote.c
index e7ade41c34..bc0c8e1292 100644
--- a/gdb/remote.c
+++ b/gdb/remote.c
@@ -4924,7 +4924,7 @@  remote_target::remote_check_symbols ()
 	     instead of any data function descriptor.  */
 	  sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
 							 sym_addr,
-							 target_stack);
+							 current_top_target ());
 
 	  xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s",
 		     phex_nz (sym_addr, addr_size), &reply[8]);
@@ -11392,7 +11392,7 @@  remote_target::memory_map ()
 {
   std::vector<mem_region> result;
   gdb::optional<gdb::char_vector> text
-    = target_read_stralloc (target_stack, TARGET_OBJECT_MEMORY_MAP, NULL);
+    = target_read_stralloc (current_top_target (), TARGET_OBJECT_MEMORY_MAP, NULL);
 
   if (text)
     result = parse_memory_map (text->data ());
@@ -13581,7 +13581,7 @@  traceframe_info_up
 remote_target::traceframe_info ()
 {
   gdb::optional<gdb::char_vector> text
-    = target_read_stralloc (target_stack, TARGET_OBJECT_TRACEFRAME_INFO,
+    = target_read_stralloc (current_top_target (), TARGET_OBJECT_TRACEFRAME_INFO,
 			    NULL);
   if (text)
     return parse_traceframe_info (text->data ());
@@ -13810,7 +13810,7 @@  static void
 btrace_read_config (struct btrace_config *conf)
 {
   gdb::optional<gdb::char_vector> xml
-    = target_read_stralloc (target_stack, TARGET_OBJECT_BTRACE_CONF, "");
+    = target_read_stralloc (current_top_target (), TARGET_OBJECT_BTRACE_CONF, "");
   if (xml)
     parse_xml_btrace_conf (conf, xml->data ());
 }
@@ -14006,7 +14006,7 @@  remote_target::read_btrace (struct btrace_data *btrace,
     }
 
   gdb::optional<gdb::char_vector> xml
-    = target_read_stralloc (target_stack, TARGET_OBJECT_BTRACE, annex);
+    = target_read_stralloc (current_top_target (), TARGET_OBJECT_BTRACE, annex);
   if (!xml)
     return BTRACE_ERR_UNKNOWN;
 
@@ -14063,7 +14063,7 @@  remote_target::pid_to_exec_file (int pid)
       xsnprintf (annex, annex_size, "%x", pid);
     }
 
-  filename = target_read_stralloc (target_stack,
+  filename = target_read_stralloc (current_top_target (),
 				   TARGET_OBJECT_EXEC_FILE, annex);
 
   return filename ? filename->data () : nullptr;
diff --git a/gdb/rs6000-tdep.c b/gdb/rs6000-tdep.c
index ff4699c191..c73dc0e1cb 100644
--- a/gdb/rs6000-tdep.c
+++ b/gdb/rs6000-tdep.c
@@ -4702,7 +4702,7 @@  ppc_process_record_op31 (struct gdbarch *gdbarch, struct regcache *regcache,
       return 0;
 
     case 1014:		/* Data Cache Block set to Zero */
-      if (target_auxv_search (target_stack, AT_DCACHEBSIZE, &at_dcsz) <= 0
+      if (target_auxv_search (current_top_target (), AT_DCACHEBSIZE, &at_dcsz) <= 0
 	  || at_dcsz == 0)
 	at_dcsz = 128; /* Assume 128-byte cache line size (POWER8)  */
 
diff --git a/gdb/s390-linux-nat.c b/gdb/s390-linux-nat.c
index 3c65c5eaa5..2168a2a503 100644
--- a/gdb/s390-linux-nat.c
+++ b/gdb/s390-linux-nat.c
@@ -1019,7 +1019,7 @@  s390_linux_nat_target::read_description ()
   {
     CORE_ADDR hwcap = 0;
 
-    target_auxv_search (target_stack, AT_HWCAP, &hwcap);
+    target_auxv_search (current_top_target (), AT_HWCAP, &hwcap);
     have_regset_tdb = (hwcap & HWCAP_S390_TE)
       && check_regset (tid, NT_S390_TDB, s390_sizeof_tdbregset);
 
diff --git a/gdb/s390-tdep.c b/gdb/s390-tdep.c
index 4af035fbfc..4f1e12a96e 100644
--- a/gdb/s390-tdep.c
+++ b/gdb/s390-tdep.c
@@ -661,7 +661,7 @@  s390_load (struct s390_prologue_data *data,
   if (pv_is_constant (addr))
     {
       struct target_section *secp;
-      secp = target_section_by_addr (target_stack, addr.k);
+      secp = target_section_by_addr (current_top_target (), addr.k);
       if (secp != NULL
 	  && (bfd_get_section_flags (secp->the_bfd_section->owner,
 				     secp->the_bfd_section)
diff --git a/gdb/solib-aix.c b/gdb/solib-aix.c
index f3dfdb577c..6e5b8b1326 100644
--- a/gdb/solib-aix.c
+++ b/gdb/solib-aix.c
@@ -280,7 +280,7 @@  solib_aix_get_library_list (struct inferior *inf, const char *warning_msg)
     return data->library_list;
 
   gdb::optional<gdb::char_vector> library_document
-    = target_read_stralloc (target_stack, TARGET_OBJECT_LIBRARIES_AIX,
+    = target_read_stralloc (current_top_target (), TARGET_OBJECT_LIBRARIES_AIX,
 			    NULL);
   if (!library_document && warning_msg != NULL)
     {
diff --git a/gdb/solib-darwin.c b/gdb/solib-darwin.c
index 557fb156b2..e655110d2d 100644
--- a/gdb/solib-darwin.c
+++ b/gdb/solib-darwin.c
@@ -497,8 +497,8 @@  darwin_solib_read_all_image_info_addr (struct darwin_info *info)
   if (TYPE_LENGTH (ptr_type) > sizeof (buf))
     return;
 
-  len = target_read (target_stack, TARGET_OBJECT_DARWIN_DYLD_INFO, NULL,
-		     buf, 0, TYPE_LENGTH (ptr_type));
+  len = target_read (current_top_target (), TARGET_OBJECT_DARWIN_DYLD_INFO,
+		     NULL, buf, 0, TYPE_LENGTH (ptr_type));
   if (len <= 0)
     return;
 
diff --git a/gdb/solib-dsbt.c b/gdb/solib-dsbt.c
index 9868606249..bf643febf8 100644
--- a/gdb/solib-dsbt.c
+++ b/gdb/solib-dsbt.c
@@ -293,7 +293,7 @@  dsbt_get_initial_loadmaps (void)
 {
   struct dsbt_info *info = get_dsbt_info ();
   gdb::optional<gdb::byte_vector> buf
-    = target_read_alloc (target_stack, TARGET_OBJECT_FDPIC, "exec");
+    = target_read_alloc (current_top_target (), TARGET_OBJECT_FDPIC, "exec");
 
   if (!buf || buf->empty ())
     {
@@ -304,7 +304,7 @@  dsbt_get_initial_loadmaps (void)
   if (solib_dsbt_debug)
     dsbt_print_loadmap (info->exec_loadmap);
 
-  buf = target_read_alloc (target_stack, TARGET_OBJECT_FDPIC, "exec");
+  buf = target_read_alloc (current_top_target (), TARGET_OBJECT_FDPIC, "exec");
   if (!buf || buf->empty ())
     {
       info->interp_loadmap = NULL;
diff --git a/gdb/solib-spu.c b/gdb/solib-spu.c
index a0fe8965bf..8419c2c139 100644
--- a/gdb/solib-spu.c
+++ b/gdb/solib-spu.c
@@ -171,7 +171,7 @@  spu_current_sos (void)
     ;
 
   /* Determine list of SPU ids.  */
-  size = target_read (target_stack, TARGET_OBJECT_SPU, NULL,
+  size = target_read (current_top_target (), TARGET_OBJECT_SPU, NULL,
 		      buf, 0, sizeof buf);
 
   /* Do not add stand-alone SPE executable context as shared library,
@@ -206,7 +206,7 @@  spu_current_sos (void)
 	 already created the SPE context, but not installed the object-id
 	 yet.  Skip such entries; we'll be back for them later.  */
       xsnprintf (annex, sizeof annex, "%d/object-id", fd);
-      len = target_read (target_stack, TARGET_OBJECT_SPU, annex,
+      len = target_read (current_top_target (), TARGET_OBJECT_SPU, annex,
 			 (gdb_byte *) id, 0, sizeof id);
       if (len <= 0 || len >= sizeof id)
 	continue;
@@ -418,7 +418,7 @@  spu_enable_break (struct objfile *objfile)
       CORE_ADDR addr = BMSYMBOL_VALUE_ADDRESS (spe_event_sym);
 
       addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), addr,
-						 target_stack);
+						 current_top_target ());
       create_solib_event_breakpoint (target_gdbarch (), addr);
       return 1;
     }
diff --git a/gdb/solib-svr4.c b/gdb/solib-svr4.c
index f9936b36de..d012f082b8 100644
--- a/gdb/solib-svr4.c
+++ b/gdb/solib-svr4.c
@@ -432,11 +432,11 @@  read_program_header (int type, int *p_sect_size, int *p_arch_size,
   int pt_phdr_p = 0;
 
   /* Get required auxv elements from target.  */
-  if (target_auxv_search (target_stack, AT_PHDR, &at_phdr) <= 0)
+  if (target_auxv_search (current_top_target (), AT_PHDR, &at_phdr) <= 0)
     return 0;
-  if (target_auxv_search (target_stack, AT_PHENT, &at_phent) <= 0)
+  if (target_auxv_search (current_top_target (), AT_PHENT, &at_phent) <= 0)
     return 0;
-  if (target_auxv_search (target_stack, AT_PHNUM, &at_phnum) <= 0)
+  if (target_auxv_search (current_top_target (), AT_PHNUM, &at_phnum) <= 0)
     return 0;
   if (!at_phdr || !at_phnum)
     return 0;
@@ -1244,7 +1244,7 @@  svr4_current_sos_via_xfer_libraries (struct svr4_library_list *list,
 
   /* Fetch the list of shared libraries.  */
   gdb::optional<gdb::char_vector> svr4_library_document
-    = target_read_stralloc (target_stack, TARGET_OBJECT_LIBRARIES_SVR4,
+    = target_read_stralloc (current_top_target (), TARGET_OBJECT_LIBRARIES_SVR4,
 			    annex);
   if (!svr4_library_document)
     return 0;
@@ -2217,9 +2217,10 @@  enable_break (struct svr4_info *info, int from_tty)
       struct obj_section *os;
 
       sym_addr = gdbarch_addr_bits_remove
-	(target_gdbarch (), gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
-							     sym_addr,
-							     target_stack));
+	(target_gdbarch (),
+	 gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
+					     sym_addr,
+					     current_top_target ()));
 
       /* On at least some versions of Solaris there's a dynamic relocation
 	 on _r_debug.r_brk and SYM_ADDR may not be relocated yet, e.g., if
@@ -2334,7 +2335,7 @@  enable_break (struct svr4_info *info, int from_tty)
       /* If we were not able to find the base address of the loader
          from our so_list, then try using the AT_BASE auxilliary entry.  */
       if (!load_addr_found)
-	if (target_auxv_search (target_stack, AT_BASE, &load_addr) > 0)
+	if (target_auxv_search (current_top_target (), AT_BASE, &load_addr) > 0)
 	  {
 	    int addr_bit = gdbarch_addr_bit (target_gdbarch ());
 
@@ -2459,7 +2460,7 @@  enable_break (struct svr4_info *info, int from_tty)
 	  sym_addr = BMSYMBOL_VALUE_ADDRESS (msymbol);
 	  sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
 							 sym_addr,
-							 target_stack);
+							 current_top_target ());
 	  svr4_create_solib_event_breakpoints (target_gdbarch (), sym_addr);
 	  return 1;
 	}
@@ -2476,7 +2477,7 @@  enable_break (struct svr4_info *info, int from_tty)
 	      sym_addr = BMSYMBOL_VALUE_ADDRESS (msymbol);
 	      sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
 							     sym_addr,
-							     target_stack);
+							     current_top_target ());
 	      svr4_create_solib_event_breakpoints (target_gdbarch (), sym_addr);
 	      return 1;
 	    }
@@ -2571,7 +2572,7 @@  svr4_exec_displacement (CORE_ADDR *displacementp)
   if ((bfd_get_file_flags (exec_bfd) & DYNAMIC) == 0)
     return 0;
 
-  if (target_auxv_search (target_stack, AT_ENTRY, &entry_point) <= 0)
+  if (target_auxv_search (current_top_target (), AT_ENTRY, &entry_point) <= 0)
     return 0;
 
   exec_displacement = entry_point - bfd_get_start_address (exec_bfd);
diff --git a/gdb/solib-target.c b/gdb/solib-target.c
index adbab7ea32..3c9872c116 100644
--- a/gdb/solib-target.c
+++ b/gdb/solib-target.c
@@ -258,7 +258,8 @@  solib_target_current_sos (void)
 
   /* Fetch the list of shared libraries.  */
   gdb::optional<gdb::char_vector> library_document
-    = target_read_stralloc (target_stack, TARGET_OBJECT_LIBRARIES, NULL);
+    = target_read_stralloc (current_top_target (), TARGET_OBJECT_LIBRARIES,
+			    NULL);
   if (!library_document)
     return NULL;
 
diff --git a/gdb/sparc-tdep.c b/gdb/sparc-tdep.c
index 7300080d8d..0e177734d0 100644
--- a/gdb/sparc-tdep.c
+++ b/gdb/sparc-tdep.c
@@ -189,7 +189,7 @@  ULONGEST
 sparc_fetch_wcookie (struct gdbarch *gdbarch)
 {
   enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
-  struct target_ops *ops = target_stack;
+  struct target_ops *ops = current_top_target ();
   gdb_byte buf[8];
   int len;
 
diff --git a/gdb/sparc64-tdep.c b/gdb/sparc64-tdep.c
index 9fd6a66199..1a7a952867 100644
--- a/gdb/sparc64-tdep.c
+++ b/gdb/sparc64-tdep.c
@@ -222,10 +222,10 @@  adi_available (void)
     return proc->stat.is_avail;
 
   proc->stat.checked_avail = true;
-  if (target_auxv_search (target_stack, AT_ADI_BLKSZ, &value) <= 0)
+  if (target_auxv_search (current_top_target (), AT_ADI_BLKSZ, &value) <= 0)
     return false;
   proc->stat.blksize = value;
-  target_auxv_search (target_stack, AT_ADI_NBITS, &value);
+  target_auxv_search (current_top_target (), AT_ADI_NBITS, &value);
   proc->stat.nbits = value;
   proc->stat.max_version = (1 << proc->stat.nbits) - 2;
   proc->stat.is_avail = true;
diff --git a/gdb/spu-tdep.c b/gdb/spu-tdep.c
index 2567c240d4..409e2c2336 100644
--- a/gdb/spu-tdep.c
+++ b/gdb/spu-tdep.c
@@ -198,7 +198,7 @@  spu_pseudo_register_read_spu (readable_regcache *regcache, const char *regname,
     return status;
   xsnprintf (annex, sizeof annex, "%d/%s", (int) id, regname);
   memset (reg, 0, sizeof reg);
-  target_read (target_stack, TARGET_OBJECT_SPU, annex,
+  target_read (current_top_target (), TARGET_OBJECT_SPU, annex,
 	       reg, 0, sizeof reg);
 
   ul = strtoulst ((char *) reg, NULL, 16);
@@ -229,7 +229,7 @@  spu_pseudo_register_read (struct gdbarch *gdbarch, readable_regcache *regcache,
       if (status != REG_VALID)
 	return status;
       xsnprintf (annex, sizeof annex, "%d/fpcr", (int) id);
-      target_read (target_stack, TARGET_OBJECT_SPU, annex, buf, 0, 16);
+      target_read (current_top_target (), TARGET_OBJECT_SPU, annex, buf, 0, 16);
       return status;
 
     case SPU_SRR0_REGNUM:
@@ -263,7 +263,7 @@  spu_pseudo_register_write_spu (struct regcache *regcache, const char *regname,
   xsnprintf (annex, sizeof annex, "%d/%s", (int) id, regname);
   xsnprintf (reg, sizeof reg, "0x%s",
 	     phex_nz (extract_unsigned_integer (buf, 4, byte_order), 4));
-  target_write (target_stack, TARGET_OBJECT_SPU, annex,
+  target_write (current_top_target (), TARGET_OBJECT_SPU, annex,
 		(gdb_byte *) reg, 0, strlen (reg));
 }
 
@@ -286,7 +286,7 @@  spu_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache,
     case SPU_FPSCR_REGNUM:
       regcache_raw_read_unsigned (regcache, SPU_ID_REGNUM, &id);
       xsnprintf (annex, sizeof annex, "%d/fpcr", (int) id);
-      target_write (target_stack, TARGET_OBJECT_SPU, annex, buf, 0, 16);
+      target_write (current_top_target (), TARGET_OBJECT_SPU, annex, buf, 0, 16);
       break;
 
     case SPU_SRR0_REGNUM:
@@ -2079,7 +2079,7 @@  info_spu_event_command (const char *args, int from_tty)
   id = get_frame_register_unsigned (frame, SPU_ID_REGNUM);
 
   xsnprintf (annex, sizeof annex, "%d/event_status", id);
-  len = target_read (target_stack, TARGET_OBJECT_SPU, annex,
+  len = target_read (current_top_target (), TARGET_OBJECT_SPU, annex,
 		     buf, 0, (sizeof (buf) - 1));
   if (len <= 0)
     error (_("Could not read event_status."));
@@ -2087,7 +2087,7 @@  info_spu_event_command (const char *args, int from_tty)
   event_status = strtoulst ((char *) buf, NULL, 16);
  
   xsnprintf (annex, sizeof annex, "%d/event_mask", id);
-  len = target_read (target_stack, TARGET_OBJECT_SPU, annex,
+  len = target_read (current_top_target (), TARGET_OBJECT_SPU, annex,
 		     buf, 0, (sizeof (buf) - 1));
   if (len <= 0)
     error (_("Could not read event_mask."));
@@ -2127,7 +2127,8 @@  info_spu_signal_command (const char *args, int from_tty)
   id = get_frame_register_unsigned (frame, SPU_ID_REGNUM);
 
   xsnprintf (annex, sizeof annex, "%d/signal1", id);
-  len = target_read (target_stack, TARGET_OBJECT_SPU, annex, buf, 0, 4);
+  len = target_read (current_top_target (), TARGET_OBJECT_SPU,
+		     annex, buf, 0, 4);
   if (len < 0)
     error (_("Could not read signal1."));
   else if (len == 4)
@@ -2137,7 +2138,7 @@  info_spu_signal_command (const char *args, int from_tty)
     }
     
   xsnprintf (annex, sizeof annex, "%d/signal1_type", id);
-  len = target_read (target_stack, TARGET_OBJECT_SPU, annex,
+  len = target_read (current_top_target (), TARGET_OBJECT_SPU, annex,
 		     buf, 0, (sizeof (buf) - 1));
   if (len <= 0)
     error (_("Could not read signal1_type."));
@@ -2145,7 +2146,8 @@  info_spu_signal_command (const char *args, int from_tty)
   signal1_type = strtoulst ((char *) buf, NULL, 16);
 
   xsnprintf (annex, sizeof annex, "%d/signal2", id);
-  len = target_read (target_stack, TARGET_OBJECT_SPU, annex, buf, 0, 4);
+  len = target_read (current_top_target (), TARGET_OBJECT_SPU,
+		     annex, buf, 0, 4);
   if (len < 0)
     error (_("Could not read signal2."));
   else if (len == 4)
@@ -2155,7 +2157,7 @@  info_spu_signal_command (const char *args, int from_tty)
     }
     
   xsnprintf (annex, sizeof annex, "%d/signal2_type", id);
-  len = target_read (target_stack, TARGET_OBJECT_SPU, annex,
+  len = target_read (current_top_target (), TARGET_OBJECT_SPU, annex,
 		     buf, 0, (sizeof (buf) - 1));
   if (len <= 0)
     error (_("Could not read signal2_type."));
@@ -2243,7 +2245,7 @@  info_spu_mailbox_command (const char *args, int from_tty)
   ui_out_emit_tuple tuple_emitter (current_uiout, "SPUInfoMailbox");
 
   xsnprintf (annex, sizeof annex, "%d/mbox_info", id);
-  len = target_read (target_stack, TARGET_OBJECT_SPU, annex,
+  len = target_read (current_top_target (), TARGET_OBJECT_SPU, annex,
 		     buf, 0, sizeof buf);
   if (len < 0)
     error (_("Could not read mbox_info."));
@@ -2252,7 +2254,7 @@  info_spu_mailbox_command (const char *args, int from_tty)
 			 "mbox", "SPU Outbound Mailbox");
 
   xsnprintf (annex, sizeof annex, "%d/ibox_info", id);
-  len = target_read (target_stack, TARGET_OBJECT_SPU, annex,
+  len = target_read (current_top_target (), TARGET_OBJECT_SPU, annex,
 		     buf, 0, sizeof buf);
   if (len < 0)
     error (_("Could not read ibox_info."));
@@ -2261,7 +2263,7 @@  info_spu_mailbox_command (const char *args, int from_tty)
 			 "ibox", "SPU Outbound Interrupt Mailbox");
 
   xsnprintf (annex, sizeof annex, "%d/wbox_info", id);
-  len = target_read (target_stack, TARGET_OBJECT_SPU, annex,
+  len = target_read (current_top_target (), TARGET_OBJECT_SPU, annex,
 		     buf, 0, sizeof buf);
   if (len < 0)
     error (_("Could not read wbox_info."));
@@ -2473,7 +2475,7 @@  info_spu_dma_command (const char *args, int from_tty)
   id = get_frame_register_unsigned (frame, SPU_ID_REGNUM);
 
   xsnprintf (annex, sizeof annex, "%d/dma_info", id);
-  len = target_read (target_stack, TARGET_OBJECT_SPU, annex,
+  len = target_read (current_top_target (), TARGET_OBJECT_SPU, annex,
 		     buf, 0, 40 + 16 * 32);
   if (len <= 0)
     error (_("Could not read dma_info."));
@@ -2550,7 +2552,7 @@  info_spu_proxydma_command (const char *args, int from_tty)
   id = get_frame_register_unsigned (frame, SPU_ID_REGNUM);
 
   xsnprintf (annex, sizeof annex, "%d/proxydma_info", id);
-  len = target_read (target_stack, TARGET_OBJECT_SPU, annex,
+  len = target_read (current_top_target (), TARGET_OBJECT_SPU, annex,
 		     buf, 0, 24 + 8 * 32);
   if (len <= 0)
     error (_("Could not read proxydma_info."));
diff --git a/gdb/symfile.c b/gdb/symfile.c
index a57bd6a593..6555eb23d6 100644
--- a/gdb/symfile.c
+++ b/gdb/symfile.c
@@ -864,7 +864,7 @@  init_entry_point_info (struct objfile *objfile)
       entry_point
 	= gdbarch_convert_from_func_ptr_addr (get_objfile_arch (objfile),
 					      entry_point,
-					      target_stack);
+					      current_top_target ());
 
       /* Remove any ISA markers, so that this matches entries in the
 	 symbol table.  */
diff --git a/gdb/symtab.c b/gdb/symtab.c
index e1f033d1d8..d02909d551 100644
--- a/gdb/symtab.c
+++ b/gdb/symtab.c
@@ -4983,9 +4983,10 @@  find_gnu_ifunc (const symbol *sym)
 	  if (MSYMBOL_TYPE (minsym) == mst_data_gnu_ifunc)
 	    {
 	      struct gdbarch *gdbarch = get_objfile_arch (objfile);
-	      msym_addr = gdbarch_convert_from_func_ptr_addr (gdbarch,
-							      msym_addr,
-							      target_stack);
+	      msym_addr
+		= gdbarch_convert_from_func_ptr_addr (gdbarch,
+						      msym_addr,
+						      current_top_target ());
 	    }
 	  if (msym_addr == address)
 	    {
diff --git a/gdb/target-descriptions.c b/gdb/target-descriptions.c
index 83a6f6cafc..3076d79a13 100644
--- a/gdb/target-descriptions.c
+++ b/gdb/target-descriptions.c
@@ -521,11 +521,11 @@  target_find_description (void)
   /* Next try to read the description from the current target using
      target objects.  */
   if (current_target_desc == NULL)
-    current_target_desc = target_read_description_xml (target_stack);
+    current_target_desc = target_read_description_xml (current_top_target ());
 
   /* If that failed try a target-specific hook.  */
   if (current_target_desc == NULL)
-    current_target_desc = target_read_description (target_stack);
+    current_target_desc = target_read_description (current_top_target ());
 
   /* If a non-NULL description was returned, then update the current
      architecture.  */
diff --git a/gdb/target-memory.c b/gdb/target-memory.c
index 8db64d7284..783e59dd55 100644
--- a/gdb/target-memory.c
+++ b/gdb/target-memory.c
@@ -338,7 +338,7 @@  target_write_memory_blocks (const std::vector<memory_write_request> &requests,
     {
       LONGEST len;
 
-      len = target_write_with_progress (target_stack,
+      len = target_write_with_progress (current_top_target (),
 					TARGET_OBJECT_MEMORY, NULL,
 					iter.data, iter.begin,
 					iter.end - iter.begin,
@@ -361,7 +361,7 @@  target_write_memory_blocks (const std::vector<memory_write_request> &requests,
 	{
 	  LONGEST len;
 
-	  len = target_write_with_progress (target_stack,
+	  len = target_write_with_progress (current_top_target (),
 					    TARGET_OBJECT_FLASH, NULL,
 					    iter.data, iter.begin,
 					    iter.end - iter.begin,
diff --git a/gdb/target.c b/gdb/target.c
index d96cdec418..13f7e68fdf 100644
--- a/gdb/target.c
+++ b/gdb/target.c
@@ -123,7 +123,13 @@  static struct target_ops *the_debug_target;
 /* The target structure we are currently using to talk to a process
    or file or whatever "inferior" we have.  */
 
-struct target_ops *target_stack;
+static target_ops *g_current_top_target;
+
+target_ops *
+current_top_target ()
+{
+  return g_current_top_target;
+}
 
 /* Command list for target.  */
 
@@ -264,7 +270,7 @@  target_has_all_memory_1 (void)
 {
   struct target_ops *t;
 
-  for (t = target_stack; t != NULL; t = t->beneath)
+  for (t = current_top_target (); t != NULL; t = t->beneath)
     if (t->has_all_memory ())
       return 1;
 
@@ -276,7 +282,7 @@  target_has_memory_1 (void)
 {
   struct target_ops *t;
 
-  for (t = target_stack; t != NULL; t = t->beneath)
+  for (t = current_top_target (); t != NULL; t = t->beneath)
     if (t->has_memory ())
       return 1;
 
@@ -288,7 +294,7 @@  target_has_stack_1 (void)
 {
   struct target_ops *t;
 
-  for (t = target_stack; t != NULL; t = t->beneath)
+  for (t = current_top_target (); t != NULL; t = t->beneath)
     if (t->has_stack ())
       return 1;
 
@@ -300,7 +306,7 @@  target_has_registers_1 (void)
 {
   struct target_ops *t;
 
-  for (t = target_stack; t != NULL; t = t->beneath)
+  for (t = current_top_target (); t != NULL; t = t->beneath)
     if (t->has_registers ())
       return 1;
 
@@ -312,7 +318,7 @@  target_has_execution_1 (ptid_t the_ptid)
 {
   struct target_ops *t;
 
-  for (t = target_stack; t != NULL; t = t->beneath)
+  for (t = current_top_target (); t != NULL; t = t->beneath)
     if (t->has_execution (the_ptid))
       return 1;
 
@@ -395,14 +401,14 @@  add_deprecated_target_alias (const target_info &tinfo, const char *alias)
 void
 target_kill (void)
 {
-  target_stack->kill ();
+  current_top_target ()->kill ();
 }
 
 void
 target_load (const char *arg, int from_tty)
 {
   target_dcache_invalidate ();
-  target_stack->load (arg, from_tty);
+  current_top_target ()->load (arg, from_tty);
 }
 
 /* Define it.  */
@@ -415,7 +421,7 @@  target_terminal_state target_terminal::m_terminal_state
 void
 target_terminal::init (void)
 {
-  target_stack->terminal_init ();
+  current_top_target ()->terminal_init ();
 
   m_terminal_state = target_terminal_state::is_ours;
 }
@@ -446,7 +452,7 @@  target_terminal::inferior (void)
 
   if (inf->terminal_state != target_terminal_state::is_inferior)
     {
-      target_stack->terminal_inferior ();
+      current_top_target ()->terminal_inferior ();
       inf->terminal_state = target_terminal_state::is_inferior;
     }
 
@@ -482,7 +488,7 @@  target_terminal::restore_inferior (void)
 	if (inf->terminal_state == target_terminal_state::is_ours_for_output)
 	  {
 	    set_current_inferior (inf);
-	    target_stack->terminal_inferior ();
+	    current_top_target ()->terminal_inferior ();
 	    inf->terminal_state = target_terminal_state::is_inferior;
 	  }
       }
@@ -515,7 +521,7 @@  target_terminal_is_ours_kind (target_terminal_state desired_state)
       if (inf->terminal_state == target_terminal_state::is_inferior)
 	{
 	  set_current_inferior (inf);
-	  target_stack->terminal_save_inferior ();
+	  current_top_target ()->terminal_save_inferior ();
 	}
     }
 
@@ -530,9 +536,9 @@  target_terminal_is_ours_kind (target_terminal_state desired_state)
 	{
 	  set_current_inferior (inf);
 	  if (desired_state == target_terminal_state::is_ours)
-	    target_stack->terminal_ours ();
+	    current_top_target ()->terminal_ours ();
 	  else if (desired_state == target_terminal_state::is_ours_for_output)
-	    target_stack->terminal_ours_for_output ();
+	    current_top_target ()->terminal_ours_for_output ();
 	  else
 	    gdb_assert_not_reached ("unhandled desired state");
 	  inf->terminal_state = desired_state;
@@ -581,7 +587,7 @@  target_terminal::ours_for_output ()
 void
 target_terminal::info (const char *arg, int from_tty)
 {
-  target_stack->terminal_info (arg, from_tty);
+  current_top_target ()->terminal_info (arg, from_tty);
 }
 
 /* See target.h.  */
@@ -589,14 +595,14 @@  target_terminal::info (const char *arg, int from_tty)
 int
 target_supports_terminal_ours (void)
 {
-  return target_stack->supports_terminal_ours ();
+  return current_top_target ()->supports_terminal_ours ();
 }
 
 static void
 tcomplain (void)
 {
   error (_("You can't do that when your target is `%s'"),
-	 target_stack->shortname ());
+	 current_top_target ()->shortname ());
 }
 
 void
@@ -648,7 +654,7 @@  push_target (struct target_ops *t)
   struct target_ops **cur;
 
   /* Find the proper stratum to install this target in.  */
-  for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
+  for (cur = &g_current_top_target; (*cur) != NULL; cur = &(*cur)->beneath)
     {
       if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum)
 	break;
@@ -689,7 +695,7 @@  unpush_target (struct target_ops *t)
   /* Look for the specified target.  Note that we assume that a target
      can only occur once in the target stack.  */
 
-  for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
+  for (cur = &g_current_top_target; (*cur) != NULL; cur = &(*cur)->beneath)
     {
       if ((*cur) == t)
 	break;
@@ -731,8 +737,8 @@  unpush_target_and_assert (struct target_ops *target)
 void
 pop_all_targets_above (enum strata above_stratum)
 {
-  while ((int) (target_stack->to_stratum) > (int) above_stratum)
-    unpush_target_and_assert (target_stack);
+  while ((int) (current_top_target ()->to_stratum) > (int) above_stratum)
+    unpush_target_and_assert (current_top_target ());
 }
 
 /* See target.h.  */
@@ -740,8 +746,8 @@  pop_all_targets_above (enum strata above_stratum)
 void
 pop_all_targets_at_and_above (enum strata stratum)
 {
-  while ((int) (target_stack->to_stratum) >= (int) stratum)
-    unpush_target_and_assert (target_stack);
+  while ((int) (current_top_target ()->to_stratum) >= (int) stratum)
+    unpush_target_and_assert (current_top_target ());
 }
 
 void
@@ -757,7 +763,7 @@  target_is_pushed (struct target_ops *t)
 {
   struct target_ops *cur;
 
-  for (cur = target_stack; cur != NULL; cur = cur->beneath)
+  for (cur = current_top_target (); cur != NULL; cur = cur->beneath)
     if (cur == t)
       return 1;
 
@@ -779,7 +785,7 @@  CORE_ADDR
 target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset)
 {
   volatile CORE_ADDR addr = 0;
-  struct target_ops *target = target_stack;
+  struct target_ops *target = current_top_target ();
 
   if (gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
     {
@@ -1345,7 +1351,7 @@  target_xfer_partial (struct target_ops *ops,
 int
 target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
 {
-  if (target_read (target_stack, TARGET_OBJECT_MEMORY, NULL,
+  if (target_read (current_top_target (), TARGET_OBJECT_MEMORY, NULL,
 		   myaddr, memaddr, len) == len)
     return 0;
   else
@@ -1375,7 +1381,7 @@  target_read_uint32 (CORE_ADDR memaddr, uint32_t *result)
 int
 target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
 {
-  if (target_read (target_stack, TARGET_OBJECT_RAW_MEMORY, NULL,
+  if (target_read (current_top_target (), TARGET_OBJECT_RAW_MEMORY, NULL,
 		   myaddr, memaddr, len) == len)
     return 0;
   else
@@ -1388,7 +1394,7 @@  target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
 int
 target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
 {
-  if (target_read (target_stack, TARGET_OBJECT_STACK_MEMORY, NULL,
+  if (target_read (current_top_target (), TARGET_OBJECT_STACK_MEMORY, NULL,
 		   myaddr, memaddr, len) == len)
     return 0;
   else
@@ -1401,7 +1407,7 @@  target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
 int
 target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
 {
-  if (target_read (target_stack, TARGET_OBJECT_CODE_MEMORY, NULL,
+  if (target_read (current_top_target (), TARGET_OBJECT_CODE_MEMORY, NULL,
 		   myaddr, memaddr, len) == len)
     return 0;
   else
@@ -1417,7 +1423,7 @@  target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
 int
 target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len)
 {
-  if (target_write (target_stack, TARGET_OBJECT_MEMORY, NULL,
+  if (target_write (current_top_target (), TARGET_OBJECT_MEMORY, NULL,
 		    myaddr, memaddr, len) == len)
     return 0;
   else
@@ -1433,7 +1439,7 @@  target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len)
 int
 target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len)
 {
-  if (target_write (target_stack, TARGET_OBJECT_RAW_MEMORY, NULL,
+  if (target_write (current_top_target (), TARGET_OBJECT_RAW_MEMORY, NULL,
 		    myaddr, memaddr, len) == len)
     return 0;
   else
@@ -1445,7 +1451,7 @@  target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len)
 std::vector<mem_region>
 target_memory_map (void)
 {
-  std::vector<mem_region> result = target_stack->memory_map ();
+  std::vector<mem_region> result = current_top_target ()->memory_map ();
   if (result.empty ())
     return result;
 
@@ -1475,13 +1481,13 @@  target_memory_map (void)
 void
 target_flash_erase (ULONGEST address, LONGEST length)
 {
-  target_stack->flash_erase (address, length);
+  current_top_target ()->flash_erase (address, length);
 }
 
 void
 target_flash_done (void)
 {
-  target_stack->flash_done ();
+  current_top_target ()->flash_done ();
 }
 
 static void
@@ -1936,7 +1942,7 @@  target_insert_breakpoint (struct gdbarch *gdbarch,
       return 1;
     }
 
-  return target_stack->insert_breakpoint (gdbarch, bp_tgt);
+  return current_top_target ()->insert_breakpoint (gdbarch, bp_tgt);
 }
 
 /* See target.h.  */
@@ -1956,7 +1962,7 @@  target_remove_breakpoint (struct gdbarch *gdbarch,
       return 1;
     }
 
-  return target_stack->remove_breakpoint (gdbarch, bp_tgt, reason);
+  return current_top_target ()->remove_breakpoint (gdbarch, bp_tgt, reason);
 }
 
 static void
@@ -1969,7 +1975,7 @@  info_target_command (const char *args, int from_tty)
     printf_unfiltered (_("Symbols from \"%s\".\n"),
 		       objfile_name (symfile_objfile));
 
-  for (t = target_stack; t != NULL; t = t->beneath)
+  for (t = current_top_target (); t != NULL; t = t->beneath)
     {
       if (!t->has_memory ())
 	continue;
@@ -2105,7 +2111,7 @@  target_detach (inferior *inf, int from_tty)
 
   prepare_for_detach ();
 
-  target_stack->detach (inf, from_tty);
+  current_top_target ()->detach (inf, from_tty);
 }
 
 void
@@ -2116,7 +2122,7 @@  target_disconnect (const char *args, int from_tty)
      disconnecting.  */
   remove_breakpoints ();
 
-  target_stack->disconnect (args, from_tty);
+  current_top_target ()->disconnect (args, from_tty);
 }
 
 /* See target/target.h.  */
@@ -2124,7 +2130,7 @@  target_disconnect (const char *args, int from_tty)
 ptid_t
 target_wait (ptid_t ptid, struct target_waitstatus *status, int options)
 {
-  return target_stack->wait (ptid, status, options);
+  return current_top_target ()->wait (ptid, status, options);
 }
 
 /* See target.h.  */
@@ -2141,13 +2147,13 @@  default_target_wait (struct target_ops *ops,
 const char *
 target_pid_to_str (ptid_t ptid)
 {
-  return target_stack->pid_to_str (ptid);
+  return current_top_target ()->pid_to_str (ptid);
 }
 
 const char *
 target_thread_name (struct thread_info *info)
 {
-  return target_stack->thread_name (info);
+  return current_top_target ()->thread_name (info);
 }
 
 struct thread_info *
@@ -2155,7 +2161,7 @@  target_thread_handle_to_thread_info (const gdb_byte *thread_handle,
 				     int handle_len,
 				     struct inferior *inf)
 {
-  return target_stack->thread_handle_to_thread_info (thread_handle,
+  return current_top_target ()->thread_handle_to_thread_info (thread_handle,
 						     handle_len, inf);
 }
 
@@ -2164,7 +2170,7 @@  target_resume (ptid_t ptid, int step, enum gdb_signal signal)
 {
   target_dcache_invalidate ();
 
-  target_stack->resume (ptid, step, signal);
+  current_top_target ()->resume (ptid, step, signal);
 
   registers_changed_ptid (ptid);
   /* We only set the internal executing state here.  The user/frontend
@@ -2184,7 +2190,7 @@  target_commit_resume (void)
   if (defer_target_commit_resume)
     return;
 
-  target_stack->commit_resume ();
+  current_top_target ()->commit_resume ();
 }
 
 /* See target.h.  */
@@ -2198,13 +2204,13 @@  make_scoped_defer_target_commit_resume ()
 void
 target_pass_signals (int numsigs, unsigned char *pass_signals)
 {
-  target_stack->pass_signals (numsigs, pass_signals);
+  current_top_target ()->pass_signals (numsigs, pass_signals);
 }
 
 void
 target_program_signals (int numsigs, unsigned char *program_signals)
 {
-  target_stack->program_signals (numsigs, program_signals);
+  current_top_target ()->program_signals (numsigs, program_signals);
 }
 
 static int
@@ -2222,7 +2228,7 @@  default_follow_fork (struct target_ops *self, int follow_child,
 int
 target_follow_fork (int follow_child, int detach_fork)
 {
-  return target_stack->follow_fork (follow_child, detach_fork);
+  return current_top_target ()->follow_fork (follow_child, detach_fork);
 }
 
 /* Target wrapper for follow exec hook.  */
@@ -2230,7 +2236,7 @@  target_follow_fork (int follow_child, int detach_fork)
 void
 target_follow_exec (struct inferior *inf, char *execd_pathname)
 {
-  target_stack->follow_exec (inf, execd_pathname);
+  current_top_target ()->follow_exec (inf, execd_pathname);
 }
 
 static void
@@ -2244,7 +2250,7 @@  void
 target_mourn_inferior (ptid_t ptid)
 {
   gdb_assert (ptid_equal (ptid, inferior_ptid));
-  target_stack->mourn_inferior ();
+  current_top_target ()->mourn_inferior ();
 
   /* We no longer need to keep handles on any of the object files.
      Make sure to release them to avoid unnecessarily locking any
@@ -2371,7 +2377,7 @@  default_search_memory (struct target_ops *self,
 		       CORE_ADDR *found_addrp)
 {
   /* Start over from the top of the target stack.  */
-  return simple_search_memory (target_stack,
+  return simple_search_memory (current_top_target (),
 			       start_addr, search_space_len,
 			       pattern, pattern_len, found_addrp);
 }
@@ -2388,7 +2394,7 @@  target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len,
 		      const gdb_byte *pattern, ULONGEST pattern_len,
 		      CORE_ADDR *found_addrp)
 {
-  return target_stack->search_memory (start_addr, search_space_len,
+  return current_top_target ()->search_memory (start_addr, search_space_len,
 				      pattern, pattern_len, found_addrp);
 }
 
@@ -2401,7 +2407,7 @@  target_require_runnable (void)
 {
   struct target_ops *t;
 
-  for (t = target_stack; t != NULL; t = t->beneath)
+  for (t = current_top_target (); t != NULL; t = t->beneath)
     {
       /* If this target knows how to create a new program, then
 	 assume we will still be able to after killing the current
@@ -2491,7 +2497,7 @@  struct target_ops *
 find_attach_target (void)
 {
   /* If a target on the current stack can attach, use it.  */
-  for (target_ops *t = target_stack; t != NULL; t = t->beneath)
+  for (target_ops *t = current_top_target (); t != NULL; t = t->beneath)
     {
       if (t->can_attach ())
 	return t;
@@ -2507,7 +2513,7 @@  struct target_ops *
 find_run_target (void)
 {
   /* If a target on the current stack can run, use it.  */
-  for (target_ops *t = target_stack; t != NULL; t = t->beneath)
+  for (target_ops *t = current_top_target (); t != NULL; t = t->beneath)
     {
       if (t->can_create_inferior ())
 	return t;
@@ -2566,7 +2572,7 @@  find_default_supports_disable_randomization (struct target_ops *self)
 int
 target_supports_disable_randomization (void)
 {
-  return target_stack->supports_disable_randomization ();
+  return current_top_target ()->supports_disable_randomization ();
 }
 
 /* See target/target.h.  */
@@ -2574,7 +2580,7 @@  target_supports_disable_randomization (void)
 int
 target_supports_multi_process (void)
 {
-  return target_stack->supports_multi_process ();
+  return current_top_target ()->supports_multi_process ();
 }
 
 /* See target.h.  */
@@ -2621,7 +2627,7 @@  target_thread_address_space (ptid_t ptid)
 {
   struct address_space *aspace;
 
-  aspace = target_stack->thread_address_space (ptid);
+  aspace = current_top_target ()->thread_address_space (ptid);
   gdb_assert (aspace != NULL);
 
   return aspace;
@@ -2668,7 +2674,7 @@  target_can_run ()
 {
   struct target_ops *t;
 
-  for (t = target_stack; t != NULL; t = t->beneath)
+  for (t = current_top_target (); t != NULL; t = t->beneath)
     {
       if (t->can_run ())
 	return 1;
@@ -3235,7 +3241,7 @@  find_target_at (enum strata stratum)
 {
   struct target_ops *t;
 
-  for (t = target_stack; t != NULL; t = t->beneath)
+  for (t = current_top_target (); t != NULL; t = t->beneath)
     if (t->to_stratum == stratum)
       return t;
 
@@ -3385,13 +3391,13 @@  target_close (struct target_ops *targ)
 int
 target_thread_alive (ptid_t ptid)
 {
-  return target_stack->thread_alive (ptid);
+  return current_top_target ()->thread_alive (ptid);
 }
 
 void
 target_update_thread_list (void)
 {
-  target_stack->update_thread_list ();
+  current_top_target ()->update_thread_list ();
 }
 
 void
@@ -3403,7 +3409,7 @@  target_stop (ptid_t ptid)
       return;
     }
 
-  target_stack->stop (ptid);
+  current_top_target ()->stop (ptid);
 }
 
 void
@@ -3415,7 +3421,7 @@  target_interrupt ()
       return;
     }
 
-  target_stack->interrupt ();
+  current_top_target ()->interrupt ();
 }
 
 /* See target.h.  */
@@ -3423,7 +3429,7 @@  target_interrupt ()
 void
 target_pass_ctrlc (void)
 {
-  target_stack->pass_ctrlc ();
+  current_top_target ()->pass_ctrlc ();
 }
 
 /* See target.h.  */
@@ -3518,7 +3524,7 @@  target_options_to_string (int target_options)
 void
 target_fetch_registers (struct regcache *regcache, int regno)
 {
-  target_stack->fetch_registers (regcache, regno);
+  current_top_target ()->fetch_registers (regcache, regno);
   if (targetdebug)
     regcache->debug_print_register ("target_fetch_registers", regno);
 }
@@ -3529,7 +3535,7 @@  target_store_registers (struct regcache *regcache, int regno)
   if (!may_write_registers)
     error (_("Writing to registers is not allowed (regno %d)"), regno);
 
-  target_stack->store_registers (regcache, regno);
+  current_top_target ()->store_registers (regcache, regno);
   if (targetdebug)
     {
       regcache->debug_print_register ("target_store_registers", regno);
@@ -3539,7 +3545,7 @@  target_store_registers (struct regcache *regcache, int regno)
 int
 target_core_of_thread (ptid_t ptid)
 {
-  return target_stack->core_of_thread (ptid);
+  return current_top_target ()->core_of_thread (ptid);
 }
 
 int
@@ -3577,14 +3583,14 @@  default_verify_memory (struct target_ops *self,
 		       const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size)
 {
   /* Start over from the top of the target stack.  */
-  return simple_verify_memory (target_stack,
+  return simple_verify_memory (current_top_target (),
 			       data, memaddr, size);
 }
 
 int
 target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size)
 {
-  return target_stack->verify_memory (data, memaddr, size);
+  return current_top_target ()->verify_memory (data, memaddr, size);
 }
 
 /* The documentation for this function is in its prototype declaration in
@@ -3594,7 +3600,7 @@  int
 target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask,
 			       enum target_hw_bp_type rw)
 {
-  return target_stack->insert_mask_watchpoint (addr, mask, rw);
+  return current_top_target ()->insert_mask_watchpoint (addr, mask, rw);
 }
 
 /* The documentation for this function is in its prototype declaration in
@@ -3604,7 +3610,7 @@  int
 target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask,
 			       enum target_hw_bp_type rw)
 {
-  return target_stack->remove_mask_watchpoint (addr, mask, rw);
+  return current_top_target ()->remove_mask_watchpoint (addr, mask, rw);
 }
 
 /* The documentation for this function is in its prototype declaration
@@ -3613,7 +3619,7 @@  target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask,
 int
 target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask)
 {
-  return target_stack->masked_watch_num_registers (addr, mask);
+  return current_top_target ()->masked_watch_num_registers (addr, mask);
 }
 
 /* The documentation for this function is in its prototype declaration
@@ -3622,7 +3628,7 @@  target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask)
 int
 target_ranged_break_num_registers (void)
 {
-  return target_stack->ranged_break_num_registers ();
+  return current_top_target ()->ranged_break_num_registers ();
 }
 
 /* See target.h.  */
@@ -3630,7 +3636,7 @@  target_ranged_break_num_registers (void)
 struct btrace_target_info *
 target_enable_btrace (ptid_t ptid, const struct btrace_config *conf)
 {
-  return target_stack->enable_btrace (ptid, conf);
+  return current_top_target ()->enable_btrace (ptid, conf);
 }
 
 /* See target.h.  */
@@ -3638,7 +3644,7 @@  target_enable_btrace (ptid_t ptid, const struct btrace_config *conf)
 void
 target_disable_btrace (struct btrace_target_info *btinfo)
 {
-  target_stack->disable_btrace (btinfo);
+  current_top_target ()->disable_btrace (btinfo);
 }
 
 /* See target.h.  */
@@ -3646,7 +3652,7 @@  target_disable_btrace (struct btrace_target_info *btinfo)
 void
 target_teardown_btrace (struct btrace_target_info *btinfo)
 {
-  target_stack->teardown_btrace (btinfo);
+  current_top_target ()->teardown_btrace (btinfo);
 }
 
 /* See target.h.  */
@@ -3656,7 +3662,7 @@  target_read_btrace (struct btrace_data *btrace,
 		    struct btrace_target_info *btinfo,
 		    enum btrace_read_type type)
 {
-  return target_stack->read_btrace (btrace, btinfo, type);
+  return current_top_target ()->read_btrace (btrace, btinfo, type);
 }
 
 /* See target.h.  */
@@ -3664,7 +3670,7 @@  target_read_btrace (struct btrace_data *btrace,
 const struct btrace_config *
 target_btrace_conf (const struct btrace_target_info *btinfo)
 {
-  return target_stack->btrace_conf (btinfo);
+  return current_top_target ()->btrace_conf (btinfo);
 }
 
 /* See target.h.  */
@@ -3672,7 +3678,7 @@  target_btrace_conf (const struct btrace_target_info *btinfo)
 void
 target_stop_recording (void)
 {
-  target_stack->stop_recording ();
+  current_top_target ()->stop_recording ();
 }
 
 /* See target.h.  */
@@ -3680,7 +3686,7 @@  target_stop_recording (void)
 void
 target_save_record (const char *filename)
 {
-  target_stack->save_record (filename);
+  current_top_target ()->save_record (filename);
 }
 
 /* See target.h.  */
@@ -3688,7 +3694,7 @@  target_save_record (const char *filename)
 int
 target_supports_delete_record ()
 {
-  return target_stack->supports_delete_record ();
+  return current_top_target ()->supports_delete_record ();
 }
 
 /* See target.h.  */
@@ -3696,7 +3702,7 @@  target_supports_delete_record ()
 void
 target_delete_record (void)
 {
-  target_stack->delete_record ();
+  current_top_target ()->delete_record ();
 }
 
 /* See target.h.  */
@@ -3704,7 +3710,7 @@  target_delete_record (void)
 enum record_method
 target_record_method (ptid_t ptid)
 {
-  return target_stack->record_method (ptid);
+  return current_top_target ()->record_method (ptid);
 }
 
 /* See target.h.  */
@@ -3712,7 +3718,7 @@  target_record_method (ptid_t ptid)
 int
 target_record_is_replaying (ptid_t ptid)
 {
-  return target_stack->record_is_replaying (ptid);
+  return current_top_target ()->record_is_replaying (ptid);
 }
 
 /* See target.h.  */
@@ -3720,7 +3726,7 @@  target_record_is_replaying (ptid_t ptid)
 int
 target_record_will_replay (ptid_t ptid, int dir)
 {
-  return target_stack->record_will_replay (ptid, dir);
+  return current_top_target ()->record_will_replay (ptid, dir);
 }
 
 /* See target.h.  */
@@ -3728,7 +3734,7 @@  target_record_will_replay (ptid_t ptid, int dir)
 void
 target_record_stop_replaying (void)
 {
-  target_stack->record_stop_replaying ();
+  current_top_target ()->record_stop_replaying ();
 }
 
 /* See target.h.  */
@@ -3736,7 +3742,7 @@  target_record_stop_replaying (void)
 void
 target_goto_record_begin (void)
 {
-  target_stack->goto_record_begin ();
+  current_top_target ()->goto_record_begin ();
 }
 
 /* See target.h.  */
@@ -3744,7 +3750,7 @@  target_goto_record_begin (void)
 void
 target_goto_record_end (void)
 {
-  target_stack->goto_record_end ();
+  current_top_target ()->goto_record_end ();
 }
 
 /* See target.h.  */
@@ -3752,7 +3758,7 @@  target_goto_record_end (void)
 void
 target_goto_record (ULONGEST insn)
 {
-  target_stack->goto_record (insn);
+  current_top_target ()->goto_record (insn);
 }
 
 /* See target.h.  */
@@ -3760,7 +3766,7 @@  target_goto_record (ULONGEST insn)
 void
 target_insn_history (int size, gdb_disassembly_flags flags)
 {
-  target_stack->insn_history (size, flags);
+  current_top_target ()->insn_history (size, flags);
 }
 
 /* See target.h.  */
@@ -3769,7 +3775,7 @@  void
 target_insn_history_from (ULONGEST from, int size,
 			  gdb_disassembly_flags flags)
 {
-  target_stack->insn_history_from (from, size, flags);
+  current_top_target ()->insn_history_from (from, size, flags);
 }
 
 /* See target.h.  */
@@ -3778,7 +3784,7 @@  void
 target_insn_history_range (ULONGEST begin, ULONGEST end,
 			   gdb_disassembly_flags flags)
 {
-  target_stack->insn_history_range (begin, end, flags);
+  current_top_target ()->insn_history_range (begin, end, flags);
 }
 
 /* See target.h.  */
@@ -3786,7 +3792,7 @@  target_insn_history_range (ULONGEST begin, ULONGEST end,
 void
 target_call_history (int size, record_print_flags flags)
 {
-  target_stack->call_history (size, flags);
+  current_top_target ()->call_history (size, flags);
 }
 
 /* See target.h.  */
@@ -3794,7 +3800,7 @@  target_call_history (int size, record_print_flags flags)
 void
 target_call_history_from (ULONGEST begin, int size, record_print_flags flags)
 {
-  target_stack->call_history_from (begin, size, flags);
+  current_top_target ()->call_history_from (begin, size, flags);
 }
 
 /* See target.h.  */
@@ -3802,7 +3808,7 @@  target_call_history_from (ULONGEST begin, int size, record_print_flags flags)
 void
 target_call_history_range (ULONGEST begin, ULONGEST end, record_print_flags flags)
 {
-  target_stack->call_history_range (begin, end, flags);
+  current_top_target ()->call_history_range (begin, end, flags);
 }
 
 /* See target.h.  */
@@ -3810,7 +3816,7 @@  target_call_history_range (ULONGEST begin, ULONGEST end, record_print_flags flag
 const struct frame_unwind *
 target_get_unwinder (void)
 {
-  return target_stack->get_unwinder ();
+  return current_top_target ()->get_unwinder ();
 }
 
 /* See target.h.  */
@@ -3818,7 +3824,7 @@  target_get_unwinder (void)
 const struct frame_unwind *
 target_get_tailcall_unwinder (void)
 {
-  return target_stack->get_tailcall_unwinder ();
+  return current_top_target ()->get_tailcall_unwinder ();
 }
 
 /* See target.h.  */
@@ -3826,7 +3832,7 @@  target_get_tailcall_unwinder (void)
 void
 target_prepare_to_generate_core (void)
 {
-  target_stack->prepare_to_generate_core ();
+  current_top_target ()->prepare_to_generate_core ();
 }
 
 /* See target.h.  */
@@ -3834,7 +3840,7 @@  target_prepare_to_generate_core (void)
 void
 target_done_generating_core (void)
 {
-  target_stack->done_generating_core ();
+  current_top_target ()->done_generating_core ();
 }
 
 
@@ -3904,7 +3910,7 @@  maintenance_print_target_stack (const char *cmd, int from_tty)
 
   printf_filtered (_("The current target stack is:\n"));
 
-  for (t = target_stack; t != NULL; t = t->beneath)
+  for (t = current_top_target (); t != NULL; t = t->beneath)
     {
       if (t->to_stratum == debug_stratum)
 	continue;
@@ -3918,7 +3924,7 @@  void
 target_async (int enable)
 {
   infrun_async (enable);
-  target_stack->async (enable);
+  current_top_target ()->async (enable);
 }
 
 /* See target.h.  */
@@ -3926,7 +3932,7 @@  target_async (int enable)
 void
 target_thread_events (int enable)
 {
-  target_stack->thread_events (enable);
+  current_top_target ()->thread_events (enable);
 }
 
 /* Controls if targets can report that they can/are async.  This is
@@ -3966,7 +3972,7 @@  maint_show_target_async_command (struct ui_file *file, int from_tty,
 static int
 target_always_non_stop_p (void)
 {
-  return target_stack->always_non_stop_p ();
+  return current_top_target ()->always_non_stop_p ();
 }
 
 /* See target.h.  */
diff --git a/gdb/target.h b/gdb/target.h
index e2d1e61cdc..fbd5c53f36 100644
--- a/gdb/target.h
+++ b/gdb/target.h
@@ -1269,12 +1269,12 @@  extern target_ops *get_native_target ();
 /* The ops structure for our "current" target process.  This should
    never be NULL.  If there is no target, it points to the dummy_target.  */
 
-extern struct target_ops *target_stack;
+extern target_ops *current_top_target ();
 
 /* Define easy words for doing these operations on our current target.  */
 
-#define	target_shortname	(target_stack->shortname ())
-#define	target_longname		(target_stack->longname ())
+#define	target_shortname	(current_top_target ()->shortname ())
+#define	target_longname		(current_top_target ()->longname ())
 
 /* Does whatever cleanup is required for a target that we are no
    longer going to be calling.  This routine is automatically always
@@ -1302,7 +1302,7 @@  extern struct target_ops *find_run_target (void);
    These targets must set to_attach_no_wait.  */
 
 #define target_attach_no_wait() \
-  (target_stack->attach_no_wait ())
+  (current_top_target ()->attach_no_wait ())
 
 /* The target_attach operation places a process under debugger control,
    and stops the process.
@@ -1310,7 +1310,7 @@  extern struct target_ops *find_run_target (void);
    This operation provides a target-specific hook that allows the
    necessary bookkeeping to be performed after an attach completes.  */
 #define target_post_attach(pid) \
-     (target_stack->post_attach) (pid)
+     (current_top_target ()->post_attach) (pid)
 
 /* Display a message indicating we're about to detach from the current
    inferior process.  */
@@ -1392,7 +1392,7 @@  extern void target_store_registers (struct regcache *regcache, int regs);
    debugged.  */
 
 #define	target_prepare_to_store(regcache)	\
-     (target_stack->prepare_to_store) (regcache)
+     (current_top_target ()->prepare_to_store) (regcache)
 
 /* Determine current address space of thread PTID.  */
 
@@ -1413,22 +1413,22 @@  int target_supports_disable_randomization (void);
    while a trace experiment is running.  */
 
 #define target_supports_enable_disable_tracepoint() \
-  (target_stack->supports_enable_disable_tracepoint) ()
+  (current_top_target ()->supports_enable_disable_tracepoint) ()
 
 #define target_supports_string_tracing() \
-  (target_stack->supports_string_tracing) ()
+  (current_top_target ()->supports_string_tracing) ()
 
 /* Returns true if this target can handle breakpoint conditions
    on its end.  */
 
 #define target_supports_evaluation_of_breakpoint_conditions() \
-  (target_stack->supports_evaluation_of_breakpoint_conditions) ()
+  (current_top_target ()->supports_evaluation_of_breakpoint_conditions) ()
 
 /* Returns true if this target can handle breakpoint commands
    on its end.  */
 
 #define target_can_run_breakpoint_commands() \
-  (target_stack->can_run_breakpoint_commands) ()
+  (current_top_target ()->can_run_breakpoint_commands) ()
 
 extern int target_read_string (CORE_ADDR, gdb::unique_xmalloc_ptr<char> *,
 			       int, int *);
@@ -1511,7 +1511,7 @@  int target_write_memory_blocks
 /* Print a line about the current target.  */
 
 #define	target_files_info()	\
-     (target_stack->files_info) ()
+     (current_top_target ()->files_info) ()
 
 /* Insert a breakpoint at address BP_TGT->placed_address in
    the target machine.  Returns 0 for success, and returns non-zero or
@@ -1561,7 +1561,7 @@  extern void target_load (const char *arg, int from_tty);
    Such targets will supply an appropriate definition for this function.  */
 
 #define target_post_startup_inferior(ptid) \
-     (target_stack->post_startup_inferior) (ptid)
+     (current_top_target ()->post_startup_inferior) (ptid)
 
 /* On some targets, we can catch an inferior fork or vfork event when
    it occurs.  These functions insert/remove an already-created
@@ -1569,16 +1569,16 @@  extern void target_load (const char *arg, int from_tty);
    catchpoint type is not supported and -1 for failure.  */
 
 #define target_insert_fork_catchpoint(pid) \
-     (target_stack->insert_fork_catchpoint) (pid)
+     (current_top_target ()->insert_fork_catchpoint) (pid)
 
 #define target_remove_fork_catchpoint(pid) \
-     (target_stack->remove_fork_catchpoint) (pid)
+     (current_top_target ()->remove_fork_catchpoint) (pid)
 
 #define target_insert_vfork_catchpoint(pid) \
-     (target_stack->insert_vfork_catchpoint) (pid)
+     (current_top_target ()->insert_vfork_catchpoint) (pid)
 
 #define target_remove_vfork_catchpoint(pid) \
-     (target_stack->remove_vfork_catchpoint) (pid)
+     (current_top_target ()->remove_vfork_catchpoint) (pid)
 
 /* If the inferior forks or vforks, this function will be called at
    the next resume in order to perform any bookkeeping and fiddling
@@ -1601,10 +1601,10 @@  void target_follow_exec (struct inferior *inf, char *execd_pathname);
    catchpoint type is not supported and -1 for failure.  */
 
 #define target_insert_exec_catchpoint(pid) \
-     (target_stack->insert_exec_catchpoint) (pid)
+     (current_top_target ()->insert_exec_catchpoint) (pid)
 
 #define target_remove_exec_catchpoint(pid) \
-     (target_stack->remove_exec_catchpoint) (pid)
+     (current_top_target ()->remove_exec_catchpoint) (pid)
 
 /* Syscall catch.
 
@@ -1623,7 +1623,7 @@  void target_follow_exec (struct inferior *inf, char *execd_pathname);
    for failure.  */
 
 #define target_set_syscall_catchpoint(pid, needed, any_count, syscall_counts) \
-     (target_stack->set_syscall_catchpoint) (pid, needed, any_count, \
+     (current_top_target ()->set_syscall_catchpoint) (pid, needed, any_count, \
 					     syscall_counts)
 
 /* The debugger has completed a blocking wait() call.  There is now
@@ -1707,7 +1707,7 @@  extern void default_target_pass_ctrlc (struct target_ops *ops);
    placed in OUTBUF.  */
 
 #define target_rcmd(command, outbuf) \
-     (target_stack->rcmd) (command, outbuf)
+     (current_top_target ()->rcmd) (command, outbuf)
 
 
 /* Does the target include all of memory, or only part of it?  This
@@ -1762,16 +1762,16 @@  extern int default_child_has_execution (ptid_t the_ptid);
    Can it lock the thread scheduler?  */
 
 #define target_can_lock_scheduler \
-  (target_stack->get_thread_control_capabilities () & tc_schedlock)
+  (current_top_target ()->get_thread_control_capabilities () & tc_schedlock)
 
 /* Controls whether async mode is permitted.  */
 extern int target_async_permitted;
 
 /* Can the target support asynchronous execution?  */
-#define target_can_async_p() (target_stack->can_async_p ())
+#define target_can_async_p() (current_top_target ()->can_async_p ())
 
 /* Is the target in asynchronous execution mode?  */
-#define target_is_async_p() (target_stack->is_async_p ())
+#define target_is_async_p() (current_top_target ()->is_async_p ())
 
 /* Enables/disabled async target events.  */
 extern void target_async (int enable);
@@ -1789,7 +1789,7 @@  extern enum auto_boolean target_non_stop_enabled;
 extern int target_is_non_stop_p (void);
 
 #define target_execution_direction() \
-  (target_stack->execution_direction ())
+  (current_top_target ()->execution_direction ())
 
 /* Converts a process id to a string.  Usually, the string just contains
    `process xyz', but on some systems it may contain
@@ -1804,7 +1804,7 @@  extern const char *normal_pid_to_str (ptid_t ptid);
    is okay.  */
 
 #define target_extra_thread_info(TP) \
-     (target_stack->extra_thread_info (TP))
+     (current_top_target ()->extra_thread_info (TP))
 
 /* Return the thread's name, or NULL if the target is unable to determine it.
    The returned value must not be freed by the caller.  */
@@ -1830,12 +1830,12 @@  extern struct thread_info *target_thread_handle_to_thread_info
    it must persist.  */
 
 #define target_pid_to_exec_file(pid) \
-     (target_stack->pid_to_exec_file) (pid)
+     (current_top_target ()->pid_to_exec_file) (pid)
 
 /* See the to_thread_architecture description in struct target_ops.  */
 
 #define target_thread_architecture(ptid) \
-     (target_stack->thread_architecture (ptid))
+     (current_top_target ()->thread_architecture (ptid))
 
 /*
  * Iterator function for target memory regions.
@@ -1845,21 +1845,21 @@  extern struct thread_info *target_thread_handle_to_thread_info
  */
 
 #define target_find_memory_regions(FUNC, DATA) \
-     (target_stack->find_memory_regions) (FUNC, DATA)
+     (current_top_target ()->find_memory_regions) (FUNC, DATA)
 
 /*
  * Compose corefile .note section.
  */
 
 #define target_make_corefile_notes(BFD, SIZE_P) \
-     (target_stack->make_corefile_notes) (BFD, SIZE_P)
+     (current_top_target ()->make_corefile_notes) (BFD, SIZE_P)
 
 /* Bookmark interfaces.  */
 #define target_get_bookmark(ARGS, FROM_TTY) \
-     (target_stack->get_bookmark) (ARGS, FROM_TTY)
+     (current_top_target ()->get_bookmark) (ARGS, FROM_TTY)
 
 #define target_goto_bookmark(ARG, FROM_TTY) \
-     (target_stack->goto_bookmark) (ARG, FROM_TTY)
+     (current_top_target ()->goto_bookmark) (ARG, FROM_TTY)
 
 /* Hardware watchpoint interfaces.  */
 
@@ -1867,32 +1867,32 @@  extern struct thread_info *target_thread_handle_to_thread_info
    write).  Only the INFERIOR_PTID task is being queried.  */
 
 #define target_stopped_by_watchpoint()		\
-  ((target_stack->stopped_by_watchpoint) ())
+  ((current_top_target ()->stopped_by_watchpoint) ())
 
 /* Returns non-zero if the target stopped because it executed a
    software breakpoint instruction.  */
 
 #define target_stopped_by_sw_breakpoint()		\
-  ((target_stack->stopped_by_sw_breakpoint) ())
+  ((current_top_target ()->stopped_by_sw_breakpoint) ())
 
 #define target_supports_stopped_by_sw_breakpoint() \
-  ((target_stack->supports_stopped_by_sw_breakpoint) ())
+  ((current_top_target ()->supports_stopped_by_sw_breakpoint) ())
 
 #define target_stopped_by_hw_breakpoint()				\
-  ((target_stack->stopped_by_hw_breakpoint) ())
+  ((current_top_target ()->stopped_by_hw_breakpoint) ())
 
 #define target_supports_stopped_by_hw_breakpoint() \
-  ((target_stack->supports_stopped_by_hw_breakpoint) ())
+  ((current_top_target ()->supports_stopped_by_hw_breakpoint) ())
 
 /* Non-zero if we have steppable watchpoints  */
 
 #define target_have_steppable_watchpoint \
-  (target_stack->have_steppable_watchpoint ())
+  (current_top_target ()->have_steppable_watchpoint ())
 
 /* Non-zero if we have continuable watchpoints  */
 
 #define target_have_continuable_watchpoint \
-  (target_stack->have_continuable_watchpoint ())
+  (current_top_target ()->have_continuable_watchpoint ())
 
 /* Provide defaults for hardware watchpoint functions.  */
 
@@ -1909,18 +1909,18 @@  extern struct thread_info *target_thread_handle_to_thread_info
    this one used so far.  */
 
 #define target_can_use_hardware_watchpoint(TYPE,CNT,OTHERTYPE) \
- (target_stack->can_use_hw_breakpoint) ( \
+ (current_top_target ()->can_use_hw_breakpoint) ( \
 					     TYPE, CNT, OTHERTYPE)
 
 /* Returns the number of debug registers needed to watch the given
    memory region, or zero if not supported.  */
 
 #define target_region_ok_for_hw_watchpoint(addr, len) \
-    (target_stack->region_ok_for_hw_watchpoint) (addr, len)
+    (current_top_target ()->region_ok_for_hw_watchpoint) (addr, len)
 
 
 #define target_can_do_single_step() \
-  (target_stack->can_do_single_step) ()
+  (current_top_target ()->can_do_single_step) ()
 
 /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes.
    TYPE is 0 for write, 1 for read, and 2 for read/write accesses.
@@ -1929,10 +1929,10 @@  extern struct thread_info *target_thread_handle_to_thread_info
    -1 for failure.  */
 
 #define	target_insert_watchpoint(addr, len, type, cond) \
-     (target_stack->insert_watchpoint) (addr, len, type, cond)
+     (current_top_target ()->insert_watchpoint) (addr, len, type, cond)
 
 #define	target_remove_watchpoint(addr, len, type, cond) \
-     (target_stack->remove_watchpoint) (addr, len, type, cond)
+     (current_top_target ()->remove_watchpoint) (addr, len, type, cond)
 
 /* Insert a new masked watchpoint at ADDR using the mask MASK.
    RW may be hw_read for a read watchpoint, hw_write for a write watchpoint
@@ -1956,10 +1956,10 @@  extern int target_remove_mask_watchpoint (CORE_ADDR, CORE_ADDR,
    message) otherwise.  */
 
 #define target_insert_hw_breakpoint(gdbarch, bp_tgt) \
-     (target_stack->insert_hw_breakpoint) (gdbarch, bp_tgt)
+     (current_top_target ()->insert_hw_breakpoint) (gdbarch, bp_tgt)
 
 #define target_remove_hw_breakpoint(gdbarch, bp_tgt) \
-     (target_stack->remove_hw_breakpoint) (gdbarch, bp_tgt)
+     (current_top_target ()->remove_hw_breakpoint) (gdbarch, bp_tgt)
 
 /* Return number of debug registers needed for a ranged breakpoint,
    or -1 if ranged breakpoints are not supported.  */
@@ -1988,7 +1988,7 @@  extern int target_ranged_break_num_registers (void);
    For this reason, GDB will still evaluate the condition expression when
    the watchpoint triggers.  */
 #define target_can_accel_watchpoint_condition(addr, len, type, cond) \
-  (target_stack->can_accel_watchpoint_condition) (addr, len, type, cond)
+  (current_top_target ()->can_accel_watchpoint_condition) (addr, len, type, cond)
 
 /* Return number of debug registers needed for a masked watchpoint,
    -1 if masked watchpoints are not supported or -2 if the given address
@@ -1998,12 +1998,12 @@  extern int target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask);
 
 /* Target can execute in reverse?  */
 #define target_can_execute_reverse \
-      target_stack->can_execute_reverse ()
+      current_top_target ()->can_execute_reverse ()
 
 extern const struct target_desc *target_read_description (struct target_ops *);
 
 #define target_get_ada_task_ptid(lwp, tid) \
-     (target_stack->get_ada_task_ptid) (lwp,tid)
+     (current_top_target ()->get_ada_task_ptid) (lwp,tid)
 
 /* Utility implementation of searching memory.  */
 extern int simple_search_memory (struct target_ops* ops,
@@ -2025,7 +2025,7 @@  extern int target_search_memory (CORE_ADDR start_addr,
 /* Return nonzero if the filesystem seen by the current inferior
    is the local filesystem, zero otherwise.  */
 #define target_filesystem_is_local() \
-  target_stack->filesystem_is_local ()
+  current_top_target ()->filesystem_is_local ()
 
 /* Open FILENAME on the target, in the filesystem as seen by INF,
    using FLAGS and MODE.  If INF is NULL, use the filesystem seen
@@ -2112,100 +2112,100 @@  extern gdb::unique_xmalloc_ptr<char> target_fileio_read_stralloc
 /* Tracepoint-related operations.  */
 
 #define target_trace_init() \
-  (target_stack->trace_init) ()
+  (current_top_target ()->trace_init) ()
 
 #define target_download_tracepoint(t) \
-  (target_stack->download_tracepoint) (t)
+  (current_top_target ()->download_tracepoint) (t)
 
 #define target_can_download_tracepoint() \
-  (target_stack->can_download_tracepoint) ()
+  (current_top_target ()->can_download_tracepoint) ()
 
 #define target_download_trace_state_variable(tsv) \
-  (target_stack->download_trace_state_variable) (tsv)
+  (current_top_target ()->download_trace_state_variable) (tsv)
 
 #define target_enable_tracepoint(loc) \
-  (target_stack->enable_tracepoint) (loc)
+  (current_top_target ()->enable_tracepoint) (loc)
 
 #define target_disable_tracepoint(loc) \
-  (target_stack->disable_tracepoint) (loc)
+  (current_top_target ()->disable_tracepoint) (loc)
 
 #define target_trace_start() \
-  (target_stack->trace_start) ()
+  (current_top_target ()->trace_start) ()
 
 #define target_trace_set_readonly_regions() \
-  (target_stack->trace_set_readonly_regions) ()
+  (current_top_target ()->trace_set_readonly_regions) ()
 
 #define target_get_trace_status(ts) \
-  (target_stack->get_trace_status) (ts)
+  (current_top_target ()->get_trace_status) (ts)
 
 #define target_get_tracepoint_status(tp,utp)		\
-  (target_stack->get_tracepoint_status) (tp, utp)
+  (current_top_target ()->get_tracepoint_status) (tp, utp)
 
 #define target_trace_stop() \
-  (target_stack->trace_stop) ()
+  (current_top_target ()->trace_stop) ()
 
 #define target_trace_find(type,num,addr1,addr2,tpp) \
-  (target_stack->trace_find) (\
+  (current_top_target ()->trace_find) (\
 				   (type), (num), (addr1), (addr2), (tpp))
 
 #define target_get_trace_state_variable_value(tsv,val) \
-  (target_stack->get_trace_state_variable_value) ((tsv), (val))
+  (current_top_target ()->get_trace_state_variable_value) ((tsv), (val))
 
 #define target_save_trace_data(filename) \
-  (target_stack->save_trace_data) (filename)
+  (current_top_target ()->save_trace_data) (filename)
 
 #define target_upload_tracepoints(utpp) \
-  (target_stack->upload_tracepoints) (utpp)
+  (current_top_target ()->upload_tracepoints) (utpp)
 
 #define target_upload_trace_state_variables(utsvp) \
-  (target_stack->upload_trace_state_variables) (utsvp)
+  (current_top_target ()->upload_trace_state_variables) (utsvp)
 
 #define target_get_raw_trace_data(buf,offset,len) \
-  (target_stack->get_raw_trace_data) ((buf), (offset), (len))
+  (current_top_target ()->get_raw_trace_data) ((buf), (offset), (len))
 
 #define target_get_min_fast_tracepoint_insn_len() \
-  (target_stack->get_min_fast_tracepoint_insn_len) ()
+  (current_top_target ()->get_min_fast_tracepoint_insn_len) ()
 
 #define target_set_disconnected_tracing(val) \
-  (target_stack->set_disconnected_tracing) (val)
+  (current_top_target ()->set_disconnected_tracing) (val)
 
 #define	target_set_circular_trace_buffer(val)	\
-  (target_stack->set_circular_trace_buffer) (val)
+  (current_top_target ()->set_circular_trace_buffer) (val)
 
 #define	target_set_trace_buffer_size(val)	\
-  (target_stack->set_trace_buffer_size) (val)
+  (current_top_target ()->set_trace_buffer_size) (val)
 
 #define	target_set_trace_notes(user,notes,stopnotes)		\
-  (target_stack->set_trace_notes) ((user), (notes), (stopnotes))
+  (current_top_target ()->set_trace_notes) ((user), (notes), (stopnotes))
 
 #define target_get_tib_address(ptid, addr) \
-  (target_stack->get_tib_address) ((ptid), (addr))
+  (current_top_target ()->get_tib_address) ((ptid), (addr))
 
 #define target_set_permissions() \
-  (target_stack->set_permissions) ()
+  (current_top_target ()->set_permissions) ()
 
 #define target_static_tracepoint_marker_at(addr, marker) \
-  (target_stack->static_tracepoint_marker_at) (addr, marker)
+  (current_top_target ()->static_tracepoint_marker_at) (addr, marker)
 
 #define target_static_tracepoint_markers_by_strid(marker_id) \
-  (target_stack->static_tracepoint_markers_by_strid) (marker_id)
+  (current_top_target ()->static_tracepoint_markers_by_strid) (marker_id)
 
 #define target_traceframe_info() \
-  (target_stack->traceframe_info) ()
+  (current_top_target ()->traceframe_info) ()
 
 #define target_use_agent(use) \
-  (target_stack->use_agent) (use)
+  (current_top_target ()->use_agent) (use)
 
 #define target_can_use_agent() \
-  (target_stack->can_use_agent) ()
+  (current_top_target ()->can_use_agent) ()
 
 #define target_augmented_libraries_svr4_read() \
-  (target_stack->augmented_libraries_svr4_read) ()
+  (current_top_target ()->augmented_libraries_svr4_read) ()
 
 /* Command logging facility.  */
 
 #define target_log_command(p)					\
-  (target_stack->log_command) (p)
+  (current_top_target ()->log_command) (p)
 
 
 extern int target_core_of_thread (ptid_t ptid);
diff --git a/gdb/tracefile-tfile.c b/gdb/tracefile-tfile.c
index f4fdd3674d..f6844a6ba0 100644
--- a/gdb/tracefile-tfile.c
+++ b/gdb/tracefile-tfile.c
@@ -307,7 +307,7 @@  tfile_write_tdesc (struct trace_file_writer *self)
     = (struct tfile_trace_file_writer *) self;
 
   gdb::optional<std::string> tdesc
-    = target_fetch_description_xml (target_stack);
+    = target_fetch_description_xml (current_top_target ());
 
   if (!tdesc)
     return;
diff --git a/gdb/tracepoint.c b/gdb/tracepoint.c
index d99d663895..5af3cfe202 100644
--- a/gdb/tracepoint.c
+++ b/gdb/tracepoint.c
@@ -3792,7 +3792,7 @@  sdata_make_value (struct gdbarch *gdbarch, struct internalvar *var,
 {
   /* We need to read the whole object before we know its size.  */
   gdb::optional<gdb::byte_vector> buf
-    = target_read_alloc (target_stack, TARGET_OBJECT_STATIC_TRACE_DATA,
+    = target_read_alloc (current_top_target (), TARGET_OBJECT_STATIC_TRACE_DATA,
 			 NULL);
   if (buf)
     {
diff --git a/gdb/valops.c b/gdb/valops.c
index 62a86c06a3..85aa89efef 100644
--- a/gdb/valops.c
+++ b/gdb/valops.c
@@ -964,7 +964,7 @@  read_value_memory (struct value *val, LONGEST bit_offset,
       enum target_xfer_status status;
       ULONGEST xfered_partial;
 
-      status = target_xfer_partial (target_stack,
+      status = target_xfer_partial (current_top_target (),
 				    object, NULL,
 				    buffer + xfered_total * unit_size, NULL,
 				    memaddr + xfered_total,
@@ -1208,7 +1208,7 @@  value_assign (struct value *toval, struct value *fromval)
     case lval_register:
     case lval_computed:
 
-      gdb::observers::target_changed.notify (target_stack);
+      gdb::observers::target_changed.notify (current_top_target ());
 
       /* Having destroyed the frame cache, restore the selected
 	 frame.  */
diff --git a/gdb/valprint.c b/gdb/valprint.c
index bed2cecf2c..aa3156ec6a 100644
--- a/gdb/valprint.c
+++ b/gdb/valprint.c
@@ -1885,7 +1885,7 @@  print_function_pointer_address (const struct value_print_options *options,
 {
   CORE_ADDR func_addr
     = gdbarch_convert_from_func_ptr_addr (gdbarch, address,
-					  target_stack);
+					  current_top_target ());
 
   /* If the function pointer is represented by a description, print
      the address of the description.  */
diff --git a/gdb/value.c b/gdb/value.c
index 6bb6b8eb61..47588f2bef 100644
--- a/gdb/value.c
+++ b/gdb/value.c
@@ -3062,7 +3062,7 @@  value_fn_field (struct value **arg1p, struct fn_field *f,
 
       set_value_address (v,
 	gdbarch_convert_from_func_ptr_addr
-	   (gdbarch, BMSYMBOL_VALUE_ADDRESS (msym), target_stack));
+	   (gdbarch, BMSYMBOL_VALUE_ADDRESS (msym), current_top_target ()));
     }
 
   if (arg1p)
diff --git a/gdb/windows-tdep.c b/gdb/windows-tdep.c
index eb44d8d407..430d44b2ed 100644
--- a/gdb/windows-tdep.c
+++ b/gdb/windows-tdep.c
@@ -331,7 +331,7 @@  display_one_tib (ptid_t ptid)
       return -1;
     }
 
-  if (target_read (target_stack, TARGET_OBJECT_MEMORY,
+  if (target_read (current_top_target (), TARGET_OBJECT_MEMORY,
 		   NULL, tib, thread_local_base, tib_size) != tib_size)
     {
       printf_filtered (_("Unable to read thread information "