*** empty log message ***
[deliverable/binutils-gdb.git] / gdb / gdbarch.c
index 1268fea86fd08fa2b741a821afc6380afee7c1de..9aa6111c6f3bda6d33680dcf89e52552445f7987 100644 (file)
@@ -2,8 +2,8 @@
 
 /* Dynamic architecture support for GDB, the GNU debugger.
 
-   Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
-   Free Software Foundation, Inc.
+   Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
+   2007, 2008, 2009 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -77,6 +77,14 @@ pformat (const struct floatformat **format)
     return format[0]->name;
 }
 
+static const char *
+pstring (const char *string)
+{
+  if (string == NULL)
+    return "(null)";
+  return string;
+}
+
 
 /* Maintain the struct gdbarch object */
 
@@ -188,6 +196,7 @@ struct gdbarch
   gdbarch_skip_main_prologue_ftype *skip_main_prologue;
   gdbarch_inner_than_ftype *inner_than;
   gdbarch_breakpoint_from_pc_ftype *breakpoint_from_pc;
+  gdbarch_remote_breakpoint_from_pc_ftype *remote_breakpoint_from_pc;
   gdbarch_adjust_breakpoint_address_ftype *adjust_breakpoint_address;
   gdbarch_memory_insert_breakpoint_ftype *memory_insert_breakpoint;
   gdbarch_memory_remove_breakpoint_ftype *memory_remove_breakpoint;
@@ -226,11 +235,13 @@ struct gdbarch
   struct core_regset_section * core_regset_sections;
   gdbarch_core_xfer_shared_libraries_ftype *core_xfer_shared_libraries;
   gdbarch_core_pid_to_str_ftype *core_pid_to_str;
+  const char * gcore_bfd_target;
   int vtable_function_descriptors;
   int vbit_in_delta;
   gdbarch_skip_permanent_breakpoint_ftype *skip_permanent_breakpoint;
   ULONGEST max_insn_length;
   gdbarch_displaced_step_copy_insn_ftype *displaced_step_copy_insn;
+  gdbarch_displaced_step_hw_singlestep_ftype *displaced_step_hw_singlestep;
   gdbarch_displaced_step_fixup_ftype *displaced_step_fixup;
   gdbarch_displaced_step_free_closure_ftype *displaced_step_free_closure;
   gdbarch_displaced_step_location_ftype *displaced_step_location;
@@ -239,12 +250,20 @@ struct gdbarch
   gdbarch_static_transform_name_ftype *static_transform_name;
   int sofun_address_maybe_missing;
   gdbarch_process_record_ftype *process_record;
+  gdbarch_process_record_signal_ftype *process_record_signal;
   gdbarch_target_signal_from_host_ftype *target_signal_from_host;
   gdbarch_target_signal_to_host_ftype *target_signal_to_host;
   gdbarch_get_siginfo_type_ftype *get_siginfo_type;
   gdbarch_record_special_symbol_ftype *record_special_symbol;
+  gdbarch_get_syscall_number_ftype *get_syscall_number;
   int has_global_solist;
   int has_global_breakpoints;
+  gdbarch_has_shared_address_space_ftype *has_shared_address_space;
+  gdbarch_fast_tracepoint_valid_at_ftype *fast_tracepoint_valid_at;
+  const char * qsupported;
+  gdbarch_auto_charset_ftype *auto_charset;
+  gdbarch_auto_wide_charset_ftype *auto_wide_charset;
+  const char * solib_symbols_extension;
 };
 
 
@@ -316,14 +335,15 @@ struct gdbarch startup_gdbarch =
   0,  /* register_to_value */
   0,  /* value_to_register */
   0,  /* value_from_register */
-  0,  /* pointer_to_address */
-  0,  /* address_to_pointer */
+  unsigned_pointer_to_address,  /* pointer_to_address */
+  unsigned_address_to_pointer,  /* address_to_pointer */
   0,  /* integer_to_address */
   0,  /* return_value */
   0,  /* skip_prologue */
   0,  /* skip_main_prologue */
   0,  /* inner_than */
   0,  /* breakpoint_from_pc */
+  default_remote_breakpoint_from_pc,  /* remote_breakpoint_from_pc */
   0,  /* adjust_breakpoint_address */
   default_memory_insert_breakpoint,  /* memory_insert_breakpoint */
   default_memory_remove_breakpoint,  /* memory_remove_breakpoint */
@@ -346,7 +366,7 @@ struct gdbarch startup_gdbarch =
   0,  /* print_insn */
   0,  /* skip_trampoline_code */
   generic_skip_solib_resolver,  /* skip_solib_resolver */
-  0,  /* in_solib_return_trampoline */
+  generic_in_solib_return_trampoline,  /* in_solib_return_trampoline */
   generic_in_function_epilogue_p,  /* in_function_epilogue_p */
   0,  /* elf_make_msymbol_special */
   0,  /* coff_make_msymbol_special */
@@ -362,11 +382,13 @@ struct gdbarch startup_gdbarch =
   0,  /* core_regset_sections */
   0,  /* core_xfer_shared_libraries */
   0,  /* core_pid_to_str */
+  0,  /* gcore_bfd_target */
   0,  /* vtable_function_descriptors */
   0,  /* vbit_in_delta */
   0,  /* skip_permanent_breakpoint */
   0,  /* max_insn_length */
   0,  /* displaced_step_copy_insn */
+  default_displaced_step_hw_singlestep,  /* displaced_step_hw_singlestep */
   0,  /* displaced_step_fixup */
   NULL,  /* displaced_step_free_closure */
   NULL,  /* displaced_step_location */
@@ -375,16 +397,23 @@ struct gdbarch startup_gdbarch =
   0,  /* static_transform_name */
   0,  /* sofun_address_maybe_missing */
   0,  /* process_record */
+  0,  /* process_record_signal */
   default_target_signal_from_host,  /* target_signal_from_host */
   default_target_signal_to_host,  /* target_signal_to_host */
   0,  /* get_siginfo_type */
   0,  /* record_special_symbol */
+  0,  /* get_syscall_number */
   0,  /* has_global_solist */
   0,  /* has_global_breakpoints */
+  default_has_shared_address_space,  /* has_shared_address_space */
+  default_fast_tracepoint_valid_at,  /* fast_tracepoint_valid_at */
+  0,  /* qsupported */
+  default_auto_charset,  /* auto_charset */
+  default_auto_wide_charset,  /* auto_wide_charset */
+  0,  /* solib_symbols_extension */
   /* startup_gdbarch() */
 };
 
-struct gdbarch *current_gdbarch = &startup_gdbarch;
 struct gdbarch *target_gdbarch = &startup_gdbarch;
 
 /* Create a new ``struct gdbarch'' based on information provided by
@@ -445,6 +474,7 @@ gdbarch_alloc (const struct gdbarch_info *info,
   gdbarch->value_from_register = default_value_from_register;
   gdbarch->pointer_to_address = unsigned_pointer_to_address;
   gdbarch->address_to_pointer = unsigned_address_to_pointer;
+  gdbarch->remote_breakpoint_from_pc = default_remote_breakpoint_from_pc;
   gdbarch->memory_insert_breakpoint = default_memory_insert_breakpoint;
   gdbarch->memory_remove_breakpoint = default_memory_remove_breakpoint;
   gdbarch->remote_register_number = default_remote_register_number;
@@ -459,11 +489,16 @@ gdbarch_alloc (const struct gdbarch_info *info,
   gdbarch->elf_make_msymbol_special = default_elf_make_msymbol_special;
   gdbarch->coff_make_msymbol_special = default_coff_make_msymbol_special;
   gdbarch->register_reggroup_p = default_register_reggroup_p;
+  gdbarch->displaced_step_hw_singlestep = default_displaced_step_hw_singlestep;
   gdbarch->displaced_step_fixup = NULL;
   gdbarch->displaced_step_free_closure = NULL;
   gdbarch->displaced_step_location = NULL;
   gdbarch->target_signal_from_host = default_target_signal_from_host;
   gdbarch->target_signal_to_host = default_target_signal_to_host;
+  gdbarch->has_shared_address_space = default_has_shared_address_space;
+  gdbarch->fast_tracepoint_valid_at = default_fast_tracepoint_valid_at;
+  gdbarch->auto_charset = default_auto_charset;
+  gdbarch->auto_wide_charset = default_auto_wide_charset;
   /* gdbarch_alloc() */
 
   return gdbarch;
@@ -506,7 +541,7 @@ verify_gdbarch (struct gdbarch *gdbarch)
 {
   struct ui_file *log;
   struct cleanup *cleanups;
-  long dummy;
+  long length;
   char *buf;
   log = mem_fileopen ();
   cleanups = make_cleanup_ui_file_delete (log);
@@ -579,6 +614,7 @@ verify_gdbarch (struct gdbarch *gdbarch)
     fprintf_unfiltered (log, "\n\tinner_than");
   if (gdbarch->breakpoint_from_pc == 0)
     fprintf_unfiltered (log, "\n\tbreakpoint_from_pc");
+  /* Skip verify of remote_breakpoint_from_pc, invalid_p == 0 */
   /* Skip verify of adjust_breakpoint_address, has predicate */
   /* Skip verify of memory_insert_breakpoint, invalid_p == 0 */
   /* Skip verify of memory_remove_breakpoint, invalid_p == 0 */
@@ -616,11 +652,13 @@ verify_gdbarch (struct gdbarch *gdbarch)
   /* Skip verify of core_reg_section_encodes_pid, invalid_p == 0 */
   /* Skip verify of core_xfer_shared_libraries, has predicate */
   /* Skip verify of core_pid_to_str, has predicate */
+  /* Skip verify of gcore_bfd_target, has predicate */
   /* Skip verify of vtable_function_descriptors, invalid_p == 0 */
   /* Skip verify of vbit_in_delta, invalid_p == 0 */
   /* Skip verify of skip_permanent_breakpoint, has predicate */
   /* Skip verify of max_insn_length, has predicate */
   /* Skip verify of displaced_step_copy_insn, has predicate */
+  /* Skip verify of displaced_step_hw_singlestep, invalid_p == 0 */
   /* Skip verify of displaced_step_fixup, has predicate */
   if ((! gdbarch->displaced_step_free_closure) != (! gdbarch->displaced_step_copy_insn))
     fprintf_unfiltered (log, "\n\tdisplaced_step_free_closure");
@@ -631,15 +669,22 @@ verify_gdbarch (struct gdbarch *gdbarch)
   /* Skip verify of static_transform_name, has predicate */
   /* Skip verify of sofun_address_maybe_missing, invalid_p == 0 */
   /* Skip verify of process_record, has predicate */
+  /* Skip verify of process_record_signal, has predicate */
   /* Skip verify of target_signal_from_host, invalid_p == 0 */
   /* Skip verify of target_signal_to_host, invalid_p == 0 */
   /* Skip verify of get_siginfo_type, has predicate */
   /* Skip verify of record_special_symbol, has predicate */
+  /* Skip verify of get_syscall_number, has predicate */
   /* Skip verify of has_global_solist, invalid_p == 0 */
   /* Skip verify of has_global_breakpoints, invalid_p == 0 */
-  buf = ui_file_xstrdup (log, &dummy);
+  /* Skip verify of has_shared_address_space, invalid_p == 0 */
+  /* Skip verify of fast_tracepoint_valid_at, invalid_p == 0 */
+  /* Skip verify of qsupported, invalid_p == 0 */
+  /* Skip verify of auto_charset, invalid_p == 0 */
+  /* Skip verify of auto_wide_charset, invalid_p == 0 */
+  buf = ui_file_xstrdup (log, &length);
   make_cleanup (xfree, buf);
-  if (strlen (buf) > 0)
+  if (length > 0)
     internal_error (__FILE__, __LINE__,
                     _("verify_gdbarch: the following are invalid ...%s"),
                     buf);
@@ -692,6 +737,12 @@ gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
   fprintf_unfiltered (file,
                       "gdbarch_dump: adjust_breakpoint_address = <%s>\n",
                       host_address_to_string (gdbarch->adjust_breakpoint_address));
+  fprintf_unfiltered (file,
+                      "gdbarch_dump: auto_charset = <%s>\n",
+                      host_address_to_string (gdbarch->auto_charset));
+  fprintf_unfiltered (file,
+                      "gdbarch_dump: auto_wide_charset = <%s>\n",
+                      host_address_to_string (gdbarch->auto_wide_charset));
   fprintf_unfiltered (file,
                       "gdbarch_dump: believe_pcc_promotion = %s\n",
                       plongest (gdbarch->believe_pcc_promotion));
@@ -782,6 +833,9 @@ gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
   fprintf_unfiltered (file,
                       "gdbarch_dump: displaced_step_free_closure = <%s>\n",
                       host_address_to_string (gdbarch->displaced_step_free_closure));
+  fprintf_unfiltered (file,
+                      "gdbarch_dump: displaced_step_hw_singlestep = <%s>\n",
+                      host_address_to_string (gdbarch->displaced_step_hw_singlestep));
   fprintf_unfiltered (file,
                       "gdbarch_dump: displaced_step_location = <%s>\n",
                       host_address_to_string (gdbarch->displaced_step_location));
@@ -806,6 +860,9 @@ gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
   fprintf_unfiltered (file,
                       "gdbarch_dump: elf_make_msymbol_special = <%s>\n",
                       host_address_to_string (gdbarch->elf_make_msymbol_special));
+  fprintf_unfiltered (file,
+                      "gdbarch_dump: fast_tracepoint_valid_at = <%s>\n",
+                      host_address_to_string (gdbarch->fast_tracepoint_valid_at));
   fprintf_unfiltered (file,
                       "gdbarch_dump: gdbarch_fetch_pointer_argument_p() = %d\n",
                       gdbarch_fetch_pointer_argument_p (gdbarch));
@@ -845,6 +902,12 @@ gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
   fprintf_unfiltered (file,
                       "gdbarch_dump: frame_red_zone_size = %s\n",
                       plongest (gdbarch->frame_red_zone_size));
+  fprintf_unfiltered (file,
+                      "gdbarch_dump: gdbarch_gcore_bfd_target_p() = %d\n",
+                      gdbarch_gcore_bfd_target_p (gdbarch));
+  fprintf_unfiltered (file,
+                      "gdbarch_dump: gcore_bfd_target = %s\n",
+                      gdbarch->gcore_bfd_target);
   fprintf_unfiltered (file,
                       "gdbarch_dump: gdbarch_get_longjmp_target_p() = %d\n",
                       gdbarch_get_longjmp_target_p (gdbarch));
@@ -857,12 +920,21 @@ gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
   fprintf_unfiltered (file,
                       "gdbarch_dump: get_siginfo_type = <%s>\n",
                       host_address_to_string (gdbarch->get_siginfo_type));
+  fprintf_unfiltered (file,
+                      "gdbarch_dump: gdbarch_get_syscall_number_p() = %d\n",
+                      gdbarch_get_syscall_number_p (gdbarch));
+  fprintf_unfiltered (file,
+                      "gdbarch_dump: get_syscall_number = <%s>\n",
+                      host_address_to_string (gdbarch->get_syscall_number));
   fprintf_unfiltered (file,
                       "gdbarch_dump: has_global_breakpoints = %s\n",
                       plongest (gdbarch->has_global_breakpoints));
   fprintf_unfiltered (file,
                       "gdbarch_dump: has_global_solist = %s\n",
                       plongest (gdbarch->has_global_solist));
+  fprintf_unfiltered (file,
+                      "gdbarch_dump: has_shared_address_space = <%s>\n",
+                      host_address_to_string (gdbarch->has_shared_address_space));
   fprintf_unfiltered (file,
                       "gdbarch_dump: have_nonsteppable_watchpoint = %s\n",
                       plongest (gdbarch->have_nonsteppable_watchpoint));
@@ -953,6 +1025,12 @@ gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
   fprintf_unfiltered (file,
                       "gdbarch_dump: process_record = <%s>\n",
                       host_address_to_string (gdbarch->process_record));
+  fprintf_unfiltered (file,
+                      "gdbarch_dump: gdbarch_process_record_signal_p() = %d\n",
+                      gdbarch_process_record_signal_p (gdbarch));
+  fprintf_unfiltered (file,
+                      "gdbarch_dump: process_record_signal = <%s>\n",
+                      host_address_to_string (gdbarch->process_record_signal));
   fprintf_unfiltered (file,
                       "gdbarch_dump: ps_regnum = %s\n",
                       plongest (gdbarch->ps_regnum));
@@ -983,6 +1061,9 @@ gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
   fprintf_unfiltered (file,
                       "gdbarch_dump: push_dummy_code = <%s>\n",
                       host_address_to_string (gdbarch->push_dummy_code));
+  fprintf_unfiltered (file,
+                      "gdbarch_dump: qsupported = %s\n",
+                      gdbarch->qsupported);
   fprintf_unfiltered (file,
                       "gdbarch_dump: gdbarch_read_pc_p() = %d\n",
                       gdbarch_read_pc_p (gdbarch));
@@ -1019,6 +1100,9 @@ gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
   fprintf_unfiltered (file,
                       "gdbarch_dump: regset_from_core_section = <%s>\n",
                       host_address_to_string (gdbarch->regset_from_core_section));
+  fprintf_unfiltered (file,
+                      "gdbarch_dump: remote_breakpoint_from_pc = <%s>\n",
+                      host_address_to_string (gdbarch->remote_breakpoint_from_pc));
   fprintf_unfiltered (file,
                       "gdbarch_dump: remote_register_number = <%s>\n",
                       host_address_to_string (gdbarch->remote_register_number));
@@ -1073,6 +1157,9 @@ gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
   fprintf_unfiltered (file,
                       "gdbarch_dump: sofun_address_maybe_missing = %s\n",
                       plongest (gdbarch->sofun_address_maybe_missing));
+  fprintf_unfiltered (file,
+                      "gdbarch_dump: solib_symbols_extension = %s\n",
+                      pstring (gdbarch->solib_symbols_extension));
   fprintf_unfiltered (file,
                       "gdbarch_dump: sp_regnum = %s\n",
                       plongest (gdbarch->sp_regnum));
@@ -2087,7 +2174,7 @@ gdbarch_pointer_to_address (struct gdbarch *gdbarch, struct type *type, const gd
   gdb_assert (gdbarch->pointer_to_address != NULL);
   if (gdbarch_debug >= 2)
     fprintf_unfiltered (gdb_stdlog, "gdbarch_pointer_to_address called\n");
-  return gdbarch->pointer_to_address (type, buf);
+  return gdbarch->pointer_to_address (gdbarch, type, buf);
 }
 
 void
@@ -2104,7 +2191,7 @@ gdbarch_address_to_pointer (struct gdbarch *gdbarch, struct type *type, gdb_byte
   gdb_assert (gdbarch->address_to_pointer != NULL);
   if (gdbarch_debug >= 2)
     fprintf_unfiltered (gdb_stdlog, "gdbarch_address_to_pointer called\n");
-  gdbarch->address_to_pointer (type, buf, addr);
+  gdbarch->address_to_pointer (gdbarch, type, buf, addr);
 }
 
 void
@@ -2237,6 +2324,23 @@ set_gdbarch_breakpoint_from_pc (struct gdbarch *gdbarch,
   gdbarch->breakpoint_from_pc = breakpoint_from_pc;
 }
 
+void
+gdbarch_remote_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *kindptr)
+{
+  gdb_assert (gdbarch != NULL);
+  gdb_assert (gdbarch->remote_breakpoint_from_pc != NULL);
+  if (gdbarch_debug >= 2)
+    fprintf_unfiltered (gdb_stdlog, "gdbarch_remote_breakpoint_from_pc called\n");
+  gdbarch->remote_breakpoint_from_pc (gdbarch, pcptr, kindptr);
+}
+
+void
+set_gdbarch_remote_breakpoint_from_pc (struct gdbarch *gdbarch,
+                                       gdbarch_remote_breakpoint_from_pc_ftype remote_breakpoint_from_pc)
+{
+  gdbarch->remote_breakpoint_from_pc = remote_breakpoint_from_pc;
+}
+
 int
 gdbarch_adjust_breakpoint_address_p (struct gdbarch *gdbarch)
 {
@@ -2673,7 +2777,7 @@ gdbarch_in_solib_return_trampoline (struct gdbarch *gdbarch, CORE_ADDR pc, char
   gdb_assert (gdbarch->in_solib_return_trampoline != NULL);
   if (gdbarch_debug >= 2)
     fprintf_unfiltered (gdb_stdlog, "gdbarch_in_solib_return_trampoline called\n");
-  return gdbarch->in_solib_return_trampoline (pc, name);
+  return gdbarch->in_solib_return_trampoline (gdbarch, pc, name);
 }
 
 void
@@ -2986,6 +3090,31 @@ set_gdbarch_core_pid_to_str (struct gdbarch *gdbarch,
   gdbarch->core_pid_to_str = core_pid_to_str;
 }
 
+int
+gdbarch_gcore_bfd_target_p (struct gdbarch *gdbarch)
+{
+  gdb_assert (gdbarch != NULL);
+  return gdbarch->gcore_bfd_target != 0;
+}
+
+const char *
+gdbarch_gcore_bfd_target (struct gdbarch *gdbarch)
+{
+  gdb_assert (gdbarch != NULL);
+  /* Check variable changed from pre-default.  */
+  gdb_assert (gdbarch->gcore_bfd_target != 0);
+  if (gdbarch_debug >= 2)
+    fprintf_unfiltered (gdb_stdlog, "gdbarch_gcore_bfd_target called\n");
+  return gdbarch->gcore_bfd_target;
+}
+
+void
+set_gdbarch_gcore_bfd_target (struct gdbarch *gdbarch,
+                              const char * gcore_bfd_target)
+{
+  gdbarch->gcore_bfd_target = gcore_bfd_target;
+}
+
 int
 gdbarch_vtable_function_descriptors (struct gdbarch *gdbarch)
 {
@@ -3093,6 +3222,23 @@ set_gdbarch_displaced_step_copy_insn (struct gdbarch *gdbarch,
   gdbarch->displaced_step_copy_insn = displaced_step_copy_insn;
 }
 
+int
+gdbarch_displaced_step_hw_singlestep (struct gdbarch *gdbarch, struct displaced_step_closure *closure)
+{
+  gdb_assert (gdbarch != NULL);
+  gdb_assert (gdbarch->displaced_step_hw_singlestep != NULL);
+  if (gdbarch_debug >= 2)
+    fprintf_unfiltered (gdb_stdlog, "gdbarch_displaced_step_hw_singlestep called\n");
+  return gdbarch->displaced_step_hw_singlestep (gdbarch, closure);
+}
+
+void
+set_gdbarch_displaced_step_hw_singlestep (struct gdbarch *gdbarch,
+                                          gdbarch_displaced_step_hw_singlestep_ftype displaced_step_hw_singlestep)
+{
+  gdbarch->displaced_step_hw_singlestep = displaced_step_hw_singlestep;
+}
+
 int
 gdbarch_displaced_step_fixup_p (struct gdbarch *gdbarch)
 {
@@ -3265,6 +3411,30 @@ set_gdbarch_process_record (struct gdbarch *gdbarch,
   gdbarch->process_record = process_record;
 }
 
+int
+gdbarch_process_record_signal_p (struct gdbarch *gdbarch)
+{
+  gdb_assert (gdbarch != NULL);
+  return gdbarch->process_record_signal != NULL;
+}
+
+int
+gdbarch_process_record_signal (struct gdbarch *gdbarch, struct regcache *regcache, enum target_signal signal)
+{
+  gdb_assert (gdbarch != NULL);
+  gdb_assert (gdbarch->process_record_signal != NULL);
+  if (gdbarch_debug >= 2)
+    fprintf_unfiltered (gdb_stdlog, "gdbarch_process_record_signal called\n");
+  return gdbarch->process_record_signal (gdbarch, regcache, signal);
+}
+
+void
+set_gdbarch_process_record_signal (struct gdbarch *gdbarch,
+                                   gdbarch_process_record_signal_ftype process_record_signal)
+{
+  gdbarch->process_record_signal = process_record_signal;
+}
+
 enum target_signal
 gdbarch_target_signal_from_host (struct gdbarch *gdbarch, int signo)
 {
@@ -3347,6 +3517,30 @@ set_gdbarch_record_special_symbol (struct gdbarch *gdbarch,
   gdbarch->record_special_symbol = record_special_symbol;
 }
 
+int
+gdbarch_get_syscall_number_p (struct gdbarch *gdbarch)
+{
+  gdb_assert (gdbarch != NULL);
+  return gdbarch->get_syscall_number != NULL;
+}
+
+LONGEST
+gdbarch_get_syscall_number (struct gdbarch *gdbarch, ptid_t ptid)
+{
+  gdb_assert (gdbarch != NULL);
+  gdb_assert (gdbarch->get_syscall_number != NULL);
+  if (gdbarch_debug >= 2)
+    fprintf_unfiltered (gdb_stdlog, "gdbarch_get_syscall_number called\n");
+  return gdbarch->get_syscall_number (gdbarch, ptid);
+}
+
+void
+set_gdbarch_get_syscall_number (struct gdbarch *gdbarch,
+                                gdbarch_get_syscall_number_ftype get_syscall_number)
+{
+  gdbarch->get_syscall_number = get_syscall_number;
+}
+
 int
 gdbarch_has_global_solist (struct gdbarch *gdbarch)
 {
@@ -3381,6 +3575,107 @@ set_gdbarch_has_global_breakpoints (struct gdbarch *gdbarch,
   gdbarch->has_global_breakpoints = has_global_breakpoints;
 }
 
+int
+gdbarch_has_shared_address_space (struct gdbarch *gdbarch)
+{
+  gdb_assert (gdbarch != NULL);
+  gdb_assert (gdbarch->has_shared_address_space != NULL);
+  if (gdbarch_debug >= 2)
+    fprintf_unfiltered (gdb_stdlog, "gdbarch_has_shared_address_space called\n");
+  return gdbarch->has_shared_address_space (gdbarch);
+}
+
+void
+set_gdbarch_has_shared_address_space (struct gdbarch *gdbarch,
+                                      gdbarch_has_shared_address_space_ftype has_shared_address_space)
+{
+  gdbarch->has_shared_address_space = has_shared_address_space;
+}
+
+int
+gdbarch_fast_tracepoint_valid_at (struct gdbarch *gdbarch, CORE_ADDR addr, int *isize, char **msg)
+{
+  gdb_assert (gdbarch != NULL);
+  gdb_assert (gdbarch->fast_tracepoint_valid_at != NULL);
+  if (gdbarch_debug >= 2)
+    fprintf_unfiltered (gdb_stdlog, "gdbarch_fast_tracepoint_valid_at called\n");
+  return gdbarch->fast_tracepoint_valid_at (gdbarch, addr, isize, msg);
+}
+
+void
+set_gdbarch_fast_tracepoint_valid_at (struct gdbarch *gdbarch,
+                                      gdbarch_fast_tracepoint_valid_at_ftype fast_tracepoint_valid_at)
+{
+  gdbarch->fast_tracepoint_valid_at = fast_tracepoint_valid_at;
+}
+
+const char *
+gdbarch_qsupported (struct gdbarch *gdbarch)
+{
+  gdb_assert (gdbarch != NULL);
+  /* Skip verify of qsupported, invalid_p == 0 */
+  if (gdbarch_debug >= 2)
+    fprintf_unfiltered (gdb_stdlog, "gdbarch_qsupported called\n");
+  return gdbarch->qsupported;
+}
+
+void
+set_gdbarch_qsupported (struct gdbarch *gdbarch,
+                        const char * qsupported)
+{
+  gdbarch->qsupported = qsupported;
+}
+
+const char *
+gdbarch_auto_charset (struct gdbarch *gdbarch)
+{
+  gdb_assert (gdbarch != NULL);
+  gdb_assert (gdbarch->auto_charset != NULL);
+  if (gdbarch_debug >= 2)
+    fprintf_unfiltered (gdb_stdlog, "gdbarch_auto_charset called\n");
+  return gdbarch->auto_charset ();
+}
+
+void
+set_gdbarch_auto_charset (struct gdbarch *gdbarch,
+                          gdbarch_auto_charset_ftype auto_charset)
+{
+  gdbarch->auto_charset = auto_charset;
+}
+
+const char *
+gdbarch_auto_wide_charset (struct gdbarch *gdbarch)
+{
+  gdb_assert (gdbarch != NULL);
+  gdb_assert (gdbarch->auto_wide_charset != NULL);
+  if (gdbarch_debug >= 2)
+    fprintf_unfiltered (gdb_stdlog, "gdbarch_auto_wide_charset called\n");
+  return gdbarch->auto_wide_charset ();
+}
+
+void
+set_gdbarch_auto_wide_charset (struct gdbarch *gdbarch,
+                               gdbarch_auto_wide_charset_ftype auto_wide_charset)
+{
+  gdbarch->auto_wide_charset = auto_wide_charset;
+}
+
+const char *
+gdbarch_solib_symbols_extension (struct gdbarch *gdbarch)
+{
+  gdb_assert (gdbarch != NULL);
+  if (gdbarch_debug >= 2)
+    fprintf_unfiltered (gdb_stdlog, "gdbarch_solib_symbols_extension called\n");
+  return gdbarch->solib_symbols_extension;
+}
+
+void
+set_gdbarch_solib_symbols_extension (struct gdbarch *gdbarch,
+                                     const char * solib_symbols_extension)
+{
+  gdbarch->solib_symbols_extension = solib_symbols_extension;
+}
+
 
 /* Keep a registry of per-architecture data-pointers required by GDB
    modules. */
@@ -3626,19 +3921,14 @@ gdbarch_list_lookup_by_info (struct gdbarch_list *arches,
 
 
 /* Find an architecture that matches the specified INFO.  Create a new
-   architecture if needed.  Return that new architecture.  Assumes
-   that there is no current architecture.  */
+   architecture if needed.  Return that new architecture.  */
 
-static struct gdbarch *
-find_arch_by_info (struct gdbarch_info info)
+struct gdbarch *
+gdbarch_find_by_info (struct gdbarch_info info)
 {
   struct gdbarch *new_gdbarch;
   struct gdbarch_registration *rego;
 
-  /* The existing architecture has been swapped out - all this code
-     works from a clean slate.  */
-  gdb_assert (current_gdbarch == NULL);
-
   /* Fill in missing parts of the INFO struct using a number of
      sources: "set ..."; INFOabfd supplied; and the global
      defaults.  */
@@ -3650,24 +3940,24 @@ find_arch_by_info (struct gdbarch_info info)
   if (gdbarch_debug)
     {
       fprintf_unfiltered (gdb_stdlog,
-                         "find_arch_by_info: info.bfd_arch_info %s\n",
+                         "gdbarch_find_by_info: info.bfd_arch_info %s\n",
                          (info.bfd_arch_info != NULL
                           ? info.bfd_arch_info->printable_name
                           : "(null)"));
       fprintf_unfiltered (gdb_stdlog,
-                         "find_arch_by_info: info.byte_order %d (%s)\n",
+                         "gdbarch_find_by_info: info.byte_order %d (%s)\n",
                          info.byte_order,
                          (info.byte_order == BFD_ENDIAN_BIG ? "big"
                           : info.byte_order == BFD_ENDIAN_LITTLE ? "little"
                           : "default"));
       fprintf_unfiltered (gdb_stdlog,
-                         "find_arch_by_info: info.osabi %d (%s)\n",
+                         "gdbarch_find_by_info: info.osabi %d (%s)\n",
                          info.osabi, gdbarch_osabi_name (info.osabi));
       fprintf_unfiltered (gdb_stdlog,
-                         "find_arch_by_info: info.abfd %s\n",
+                         "gdbarch_find_by_info: info.abfd %s\n",
                          host_address_to_string (info.abfd));
       fprintf_unfiltered (gdb_stdlog,
-                         "find_arch_by_info: info.tdep_info %s\n",
+                         "gdbarch_find_by_info: info.tdep_info %s\n",
                          host_address_to_string (info.tdep_info));
     }
 
@@ -3680,7 +3970,7 @@ find_arch_by_info (struct gdbarch_info info)
   if (rego == NULL)
     {
       if (gdbarch_debug)
-       fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
+       fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
                            "No matching architecture\n");
       return 0;
     }
@@ -3693,7 +3983,7 @@ find_arch_by_info (struct gdbarch_info info)
   if (new_gdbarch == NULL)
     {
       if (gdbarch_debug)
-       fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
+       fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
                            "Target rejected architecture\n");
       return NULL;
     }
@@ -3706,7 +3996,7 @@ find_arch_by_info (struct gdbarch_info info)
       struct gdbarch_list **list;
       struct gdbarch_list *this;
       if (gdbarch_debug)
-       fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
+       fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
                            "Previous architecture %s (%s) selected\n",
                            host_address_to_string (new_gdbarch),
                            new_gdbarch->bfd_arch_info->printable_name);
@@ -3728,7 +4018,7 @@ find_arch_by_info (struct gdbarch_info info)
 
   /* It's a new architecture.  */
   if (gdbarch_debug)
-    fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
+    fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
                        "New architecture %s (%s) selected\n",
                        host_address_to_string (new_gdbarch),
                        new_gdbarch->bfd_arch_info->printable_name);
@@ -3754,39 +4044,13 @@ find_arch_by_info (struct gdbarch_info info)
   return new_gdbarch;
 }
 
-struct gdbarch *
-gdbarch_find_by_info (struct gdbarch_info info)
-{
-  struct gdbarch *new_gdbarch;
-
-  /* Save the previously selected architecture, setting the global to
-     NULL.  This stops things like gdbarch->init() trying to use the
-     previous architecture's configuration.  The previous architecture
-     may not even be of the same architecture family.  The most recent
-     architecture of the same family is found at the head of the
-     rego->arches list.  */
-  struct gdbarch *old_gdbarch = current_gdbarch;
-  current_gdbarch = NULL;
-
-  /* Find the specified architecture.  */
-  new_gdbarch = find_arch_by_info (info);
-
-  /* Restore the existing architecture.  */
-  gdb_assert (current_gdbarch == NULL);
-  current_gdbarch = old_gdbarch;
-
-  return new_gdbarch;
-}
-
 /* Make the specified architecture current.  */
 
 void
-deprecated_current_gdbarch_select_hack (struct gdbarch *new_gdbarch)
+deprecated_target_gdbarch_select_hack (struct gdbarch *new_gdbarch)
 {
   gdb_assert (new_gdbarch != NULL);
-  gdb_assert (current_gdbarch != NULL);
   gdb_assert (new_gdbarch->initialized_p);
-  current_gdbarch = new_gdbarch;
   target_gdbarch = new_gdbarch;
   observer_notify_architecture_changed (new_gdbarch);
   registers_changed ();
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