Use a member function to set a symbol's language
[deliverable/binutils-gdb.git] / gdb / language.c
index 8d476d398c1c5c4647a4fa96e6596270c0c888c5..76efc497379bf479aba7abdeeed1137ba3c95189 100644 (file)
@@ -1,6 +1,6 @@
 /* Multiple source language support for GDB.
 
-   Copyright (C) 1991-2014 Free Software Foundation, Inc.
+   Copyright (C) 1991-2019 Free Software Foundation, Inc.
 
    Contributed by the Department of Computer Science at the State University
    of New York at Buffalo.
 #include "varobj.h"
 #include "target.h"
 #include "parser-defs.h"
-#include "jv-lang.h"
 #include "demangle.h"
 #include "symfile.h"
 #include "cp-support.h"
-
-extern void _initialize_language (void);
-
-static void unk_lang_error (char *);
+#include "frame.h"
+#include "c-lang.h"
+#include <algorithm>
+#include "gdbarch.h"
 
 static int unk_lang_parser (struct parser_state *);
 
-static void show_check (char *, int);
-
-static void set_check (char *, int);
-
 static void set_range_case (void);
 
 static void unk_lang_emit_char (int c, struct type *type,
@@ -90,24 +85,36 @@ enum language_mode language_mode = language_mode_auto;
 
 const struct language_defn *expected_language;
 
-/* The list of supported languages.  The list itself is malloc'd.  */
-
-static const struct language_defn **languages;
-static unsigned languages_size;
-static unsigned languages_allocsize;
-#define        DEFAULT_ALLOCSIZE 4
+/* The list of supported languages.  Keep this in the same order as
+   the 'enum language' values.  */
+
+static const struct language_defn *languages[] = {
+  &unknown_language_defn,
+  &auto_language_defn,
+  &c_language_defn,
+  &objc_language_defn,
+  &cplus_language_defn,
+  &d_language_defn,
+  &go_language_defn,
+  &f_language_defn,
+  &m2_language_defn,
+  &asm_language_defn,
+  &pascal_language_defn,
+  &opencl_language_defn,
+  &rust_language_defn,
+  &minimal_language_defn,
+  &ada_language_defn,
+};
 
-/* The current values of the "set language/type/range" enum
+/* The current values of the "set language/range/case-sensitive" enum
    commands.  */
 static const char *language;
-static const char *type;
 static const char *range;
 static const char *case_sensitive;
 
-/* Warning issued when current_language and the language of the current
-   frame do not match.  */
-char lang_frame_mismatch_warn[] =
-"Warning: the current language does not match this frame.";
+/* See language.h.  */
+const char lang_frame_mismatch_warn[] =
+N_("Warning: the current language does not match this frame.");
 \f
 /* This page contains the functions corresponding to GDB commands
    and their helpers.  */
@@ -118,7 +125,7 @@ static void
 show_language_command (struct ui_file *file, int from_tty,
                       struct cmd_list_element *c, const char *value)
 {
-  enum language flang;         /* The language of the current frame.  */
+  enum language flang;         /* The language of the frame.  */
 
   if (language_mode == language_mode_auto)
     fprintf_filtered (gdb_stdout,
@@ -130,32 +137,53 @@ show_language_command (struct ui_file *file, int from_tty,
                      _("The current source language is \"%s\".\n"),
                      current_language->la_name);
 
-  flang = get_frame_language ();
-  if (flang != language_unknown &&
-      language_mode == language_mode_manual &&
-      current_language->la_language != flang)
-    printf_filtered ("%s\n", lang_frame_mismatch_warn);
+  if (has_stack_frames ())
+    {
+      struct frame_info *frame;
+
+      frame = get_selected_frame (NULL);
+      flang = get_frame_language (frame);
+      if (flang != language_unknown
+         && language_mode == language_mode_manual
+         && current_language->la_language != flang)
+       printf_filtered ("%s\n", _(lang_frame_mismatch_warn));
+    }
 }
 
 /* Set command.  Change the current working language.  */
 static void
-set_language_command (char *ignore, int from_tty, struct cmd_list_element *c)
+set_language_command (const char *ignore,
+                     int from_tty, struct cmd_list_element *c)
 {
-  int i;
-  enum language flang;
+  enum language flang = language_unknown;
+
+  /* "local" is a synonym of "auto".  */
+  if (strcmp (language, "local") == 0)
+    language = "auto";
 
   /* Search the list of languages for a match.  */
-  for (i = 0; i < languages_size; i++)
+  for (const auto &lang : languages)
     {
-      if (strcmp (languages[i]->la_name, language) == 0)
+      if (strcmp (lang->la_name, language) == 0)
        {
          /* Found it!  Go into manual mode, and use this language.  */
-         if (languages[i]->la_language == language_auto)
+         if (lang->la_language == language_auto)
            {
              /* Enter auto mode.  Set to the current frame's language, if
                  known, or fallback to the initial language.  */
              language_mode = language_mode_auto;
-             flang = get_frame_language ();
+             try
+               {
+                 struct frame_info *frame;
+
+                 frame = get_selected_frame (NULL);
+                 flang = get_frame_language (frame);
+               }
+             catch (const gdb_exception_error &ex)
+               {
+                 flang = language_unknown;
+               }
+
              if (flang != language_unknown)
                set_language (flang);
              else
@@ -167,7 +195,7 @@ set_language_command (char *ignore, int from_tty, struct cmd_list_element *c)
            {
              /* Enter manual mode.  Set the specified language.  */
              language_mode = language_mode_manual;
-             current_language = languages[i];
+             current_language = lang;
              set_range_case ();
              expected_language = current_language;
              return;
@@ -188,7 +216,7 @@ show_range_command (struct ui_file *file, int from_tty,
 {
   if (range_mode == range_mode_auto)
     {
-      char *tmp;
+      const char *tmp;
 
       switch (range_check)
        {
@@ -221,7 +249,8 @@ show_range_command (struct ui_file *file, int from_tty,
 
 /* Set command.  Change the setting for range checking.  */
 static void
-set_range_command (char *ignore, int from_tty, struct cmd_list_element *c)
+set_range_command (const char *ignore,
+                  int from_tty, struct cmd_list_element *c)
 {
   if (strcmp (range, "on") == 0)
     {
@@ -262,7 +291,7 @@ show_case_command (struct ui_file *file, int from_tty,
 {
   if (case_mode == case_mode_auto)
     {
-      char *tmp = NULL;
+      const char *tmp = NULL;
 
       switch (case_sensitivity)
        {
@@ -295,7 +324,7 @@ show_case_command (struct ui_file *file, int from_tty,
 /* Set command.  Change the setting for case sensitivity.  */
 
 static void
-set_case_command (char *ignore, int from_tty, struct cmd_list_element *c)
+set_case_command (const char *ignore, int from_tty, struct cmd_list_element *c)
 {
    if (strcmp (case_sensitive, "on") == 0)
      {
@@ -345,21 +374,11 @@ set_range_case (void)
 enum language
 set_language (enum language lang)
 {
-  int i;
   enum language prev_language;
 
   prev_language = current_language->la_language;
-
-  for (i = 0; i < languages_size; i++)
-    {
-      if (languages[i]->la_language == lang)
-       {
-         current_language = languages[i];
-         set_range_case ();
-         break;
-       }
-    }
-
+  current_language = languages[lang];
+  set_range_case ();
   return prev_language;
 }
 \f
@@ -391,8 +410,7 @@ language_info (int quietly)
 int
 pointer_type (struct type *type)
 {
-  return TYPE_CODE (type) == TYPE_CODE_PTR ||
-    TYPE_CODE (type) == TYPE_CODE_REF;
+  return TYPE_CODE (type) == TYPE_CODE_PTR || TYPE_IS_REFERENCE (type);
 }
 
 \f
@@ -454,13 +472,14 @@ range_error (const char *string,...)
 /* Return the language enum for a given language string.  */
 
 enum language
-language_enum (char *str)
+language_enum (const char *str)
 {
-  int i;
+  for (const auto &lang : languages)
+    if (strcmp (lang->la_name, str) == 0)
+      return lang->la_language;
 
-  for (i = 0; i < languages_size; i++)
-    if (strcmp (languages[i]->la_name, str) == 0)
-      return languages[i]->la_language;
+  if (strcmp (str, "local") == 0)
+    return language_auto;
 
   return language_unknown;
 }
@@ -470,36 +489,19 @@ language_enum (char *str)
 const struct language_defn *
 language_def (enum language lang)
 {
-  int i;
-
-  for (i = 0; i < languages_size; i++)
-    {
-      if (languages[i]->la_language == lang)
-       {
-         return languages[i];
-       }
-    }
-  return NULL;
+  return languages[lang];
 }
 
 /* Return the language as a string.  */
+
 const char *
 language_str (enum language lang)
 {
-  int i;
-
-  for (i = 0; i < languages_size; i++)
-    {
-      if (languages[i]->la_language == lang)
-       {
-         return languages[i]->la_name;
-       }
-    }
-  return "Unknown";
+  return languages[lang]->la_name;
 }
 
 static void
-set_check (char *ignore, int from_tty)
+set_check (const char *ignore, int from_tty)
 {
   printf_unfiltered (
      "\"set check\" must be followed by the name of a check subcommand.\n");
@@ -507,93 +509,84 @@ set_check (char *ignore, int from_tty)
 }
 
 static void
-show_check (char *ignore, int from_tty)
+show_check (const char *ignore, int from_tty)
 {
   cmd_show_list (showchecklist, from_tty, "");
 }
 \f
-/* Add a language to the set of known languages.  */
-
-void
-add_language (const struct language_defn *lang)
-{
-  /* For the "set language" command.  */
-  static const char **language_names = NULL;
-  /* For the "help set language" command.  */
-  char *language_set_doc = NULL;
 
-  int i;
-  struct ui_file *tmp_stream;
+/* Build and install the "set language LANG" command.  */
 
-  if (lang->la_magic != LANG_MAGIC)
-    {
-      fprintf_unfiltered (gdb_stderr,
-                         "Magic number of %s language struct wrong\n",
-                         lang->la_name);
-      internal_error (__FILE__, __LINE__,
-                     _("failed internal consistency check"));
-    }
+static void
+add_set_language_command ()
+{
+  static const char **language_names;
 
-  if (!languages)
-    {
-      languages_allocsize = DEFAULT_ALLOCSIZE;
-      languages = (const struct language_defn **) xmalloc
-       (languages_allocsize * sizeof (*languages));
-    }
-  if (languages_size >= languages_allocsize)
+  /* Build the language names array, to be used as enumeration in the
+     "set language" enum command.  +1 for "local" and +1 for NULL
+     termination.  */
+  language_names = new const char *[ARRAY_SIZE (languages) + 2];
+
+  /* Display "auto", "local" and "unknown" first, and then the rest,
+     alpha sorted.  */
+  const char **language_names_p = language_names;
+  *language_names_p++ = auto_language_defn.la_name;
+  *language_names_p++ = "local";
+  *language_names_p++ = unknown_language_defn.la_name;
+  const char **sort_begin = language_names_p;
+  for (const auto &lang : languages)
     {
-      languages_allocsize *= 2;
-      languages = (const struct language_defn **) xrealloc ((char *) languages,
-                                languages_allocsize * sizeof (*languages));
+      /* Already handled above.  */
+      if (lang->la_language == language_auto
+         || lang->la_language == language_unknown)
+       continue;
+      *language_names_p++ = lang->la_name;
     }
-  languages[languages_size++] = lang;
-
-  /* Build the language names array, to be used as enumeration in the
-     set language" enum command.  */
-  language_names = xrealloc (language_names,
-                            (languages_size + 1) * sizeof (const char *));
-  for (i = 0; i < languages_size; ++i)
-    language_names[i] = languages[i]->la_name;
-  language_names[i] = NULL;
+  *language_names_p = NULL;
+  std::sort (sort_begin, language_names_p, compare_cstrings);
+
+  /* Add the filename extensions.  */
+  for (const auto &lang : languages)
+    if (lang->la_filename_extensions != NULL)
+      {
+       for (size_t i = 0; lang->la_filename_extensions[i] != NULL; ++i)
+         add_filename_language (lang->la_filename_extensions[i],
+                                lang->la_language);
+      }
 
   /* Build the "help set language" docs.  */
-  tmp_stream = mem_fileopen ();
+  string_file doc;
 
-  fprintf_unfiltered (tmp_stream,
-                     _("Set the current source language.\n"
-                       "The currently understood settings are:\n\nlocal or "
-                       "auto    Automatic setting based on source file\n"));
+  doc.printf (_("Set the current source language.\n"
+               "The currently understood settings are:\n\nlocal or "
+               "auto    Automatic setting based on source file"));
 
-  for (i = 0; i < languages_size; ++i)
+  for (const auto &lang : languages)
     {
       /* Already dealt with these above.  */
-      if (languages[i]->la_language == language_unknown
-         || languages[i]->la_language == language_auto)
+      if (lang->la_language == language_unknown
+         || lang->la_language == language_auto)
        continue;
 
-      /* FIXME: i18n: for now assume that the human-readable name
-        is just a capitalization of the internal name.  */
-      fprintf_unfiltered (tmp_stream, "%-16s Use the %c%s language\n",
-                         languages[i]->la_name,
-                         /* Capitalize first letter of language
-                            name.  */
-                         toupper (languages[i]->la_name[0]),
-                         languages[i]->la_name + 1);
+      /* FIXME: i18n: for now assume that the human-readable name is
+        just a capitalization of the internal name.  */
+      /* Note that we add the newline at the front, so we don't wind
+        up with a trailing newline.  */
+      doc.printf ("\n%-16s Use the %c%s language",
+                 lang->la_name,
+                 /* Capitalize first letter of language name.  */
+                 toupper (lang->la_name[0]),
+                 lang->la_name + 1);
     }
 
-  language_set_doc = ui_file_xstrdup (tmp_stream, NULL);
-  ui_file_delete (tmp_stream);
-
   add_setshow_enum_cmd ("language", class_support,
-                       (const char **) language_names,
+                       language_names,
                        &language,
-                       language_set_doc,
+                       doc.c_str (),
                        _("Show the current source language."),
                        NULL, set_language_command,
                        show_language_command,
                        &setlist, &showlist);
-
-  xfree (language_set_doc);
 }
 
 /* Iterate through all registered languages looking for and calling
@@ -603,13 +596,11 @@ add_language (const struct language_defn *lang)
 CORE_ADDR 
 skip_language_trampoline (struct frame_info *frame, CORE_ADDR pc)
 {
-  int i;
-
-  for (i = 0; i < languages_size; i++)
+  for (const auto &lang : languages)
     {
-      if (languages[i]->skip_trampoline)
+      if (lang->skip_trampoline != NULL)
        {
-         CORE_ADDR real_pc = (languages[i]->skip_trampoline) (frame, pc);
+         CORE_ADDR real_pc = lang->skip_trampoline (frame, pc);
 
          if (real_pc)
            return real_pc;
@@ -634,6 +625,23 @@ language_demangle (const struct language_defn *current_language,
   return NULL;
 }
 
+/* See language.h.  */
+
+int
+language_sniff_from_mangled_name (const struct language_defn *lang,
+                                 const char *mangled, char **demangled)
+{
+  gdb_assert (lang != NULL);
+
+  if (lang->la_sniff_from_mangled_name == NULL)
+    {
+      *demangled = NULL;
+      return 0;
+    }
+
+  return lang->la_sniff_from_mangled_name (mangled, demangled);
+}
+
 /* Return class name from physname or NULL.  */
 char *
 language_class_name_from_physname (const struct language_defn *lang,
@@ -665,7 +673,7 @@ default_pass_by_reference (struct type *type)
    delimiting words.  This is a reasonable default value that
    most languages should be able to use.  */
 
-char *
+const char *
 default_word_break_characters (void)
 {
   return " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-";
@@ -682,11 +690,61 @@ default_print_array_index (struct value *index_value, struct ui_file *stream,
   fprintf_filtered (stream, "] = ");
 }
 
-void
-default_get_string (struct value *value, gdb_byte **buffer, int *length,
-                   struct type **char_type, const char **charset)
+/* See language.h.  */
+
+bool
+default_symbol_name_matcher (const char *symbol_search_name,
+                            const lookup_name_info &lookup_name,
+                            completion_match_result *comp_match_res)
+{
+  const std::string &name = lookup_name.name ();
+  completion_match_for_lcd *match_for_lcd
+    = (comp_match_res != NULL ? &comp_match_res->match_for_lcd : NULL);
+  strncmp_iw_mode mode = (lookup_name.completion_mode ()
+                         ? strncmp_iw_mode::NORMAL
+                         : strncmp_iw_mode::MATCH_PARAMS);
+
+  if (strncmp_iw_with_mode (symbol_search_name, name.c_str (), name.size (),
+                           mode, language_minimal, match_for_lcd) == 0)
+    {
+      if (comp_match_res != NULL)
+       comp_match_res->set_match (symbol_search_name);
+      return true;
+    }
+  else
+    return false;
+}
+
+/* See language.h.  */
+
+bool
+default_is_string_type_p (struct type *type)
+{
+  type = check_typedef (type);
+  while (TYPE_CODE (type) == TYPE_CODE_REF)
+    {
+      type = TYPE_TARGET_TYPE (type);
+      type = check_typedef (type);
+    }
+  return (TYPE_CODE (type)  == TYPE_CODE_STRING);
+}
+
+/* See language.h.  */
+
+symbol_name_matcher_ftype *
+get_symbol_name_matcher (const language_defn *lang,
+                        const lookup_name_info &lookup_name)
 {
-  error (_("Getting a string is unsupported in this language."));
+  /* If currently in Ada mode, and the lookup name is wrapped in
+     '<...>', hijack all symbol name comparisons using the Ada
+     matcher, which handles the verbatim matching.  */
+  if (current_language->la_language == language_ada
+      && lookup_name.ada ().verbatim_p ())
+    return current_language->la_get_symbol_name_matcher (lookup_name);
+
+  if (lang->la_get_symbol_name_matcher != nullptr)
+    return lang->la_get_symbol_name_matcher (lookup_name);
+  return default_symbol_name_matcher;
 }
 
 /* Define the language that is no language.  */
@@ -697,12 +755,6 @@ unk_lang_parser (struct parser_state *ps)
   return 1;
 }
 
-static void
-unk_lang_error (char *msg)
-{
-  error (_("Attempted to parse an expression with unknown language"));
-}
-
 static void
 unk_lang_emit_char (int c, struct type *type, struct ui_file *stream,
                    int quoter)
@@ -738,10 +790,10 @@ unk_lang_print_type (struct type *type, const char *varstring,
 }
 
 static void
-unk_lang_val_print (struct type *type, const gdb_byte *valaddr,
+unk_lang_val_print (struct type *type,
                    int embedded_offset, CORE_ADDR address,
                    struct ui_file *stream, int recurse,
-                   const struct value *val,
+                   struct value *val,
                    const struct value_print_options *options)
 {
   error (_("internal error - unimplemented "
@@ -796,9 +848,9 @@ const struct language_defn unknown_language_defn =
   case_sensitive_on,
   array_row_major,
   macro_expansion_no,
+  NULL,
   &exp_descriptor_standard,
   unk_lang_parser,
-  unk_lang_error,
   null_post_parser,
   unk_lang_printchar,          /* Print character constant */
   unk_lang_printstr,
@@ -810,26 +862,30 @@ const struct language_defn unknown_language_defn =
   default_read_var_value,      /* la_read_var_value */
   unk_lang_trampoline,         /* Language specific skip_trampoline */
   "this",                      /* name_of_this */
+  true,                                /* store_sym_names_in_linkage_form_p */
   basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
   basic_lookup_transparent_type,/* lookup_transparent_type */
   unk_lang_demangle,           /* Language specific symbol demangler */
+  NULL,
   unk_lang_class_name,         /* Language specific
                                   class_name_from_physname */
   unk_op_print_tab,            /* expression operators for printing */
   1,                           /* c-style arrays */
   0,                           /* String lower bound */
   default_word_break_characters,
-  default_make_symbol_completion_list,
+  default_collect_symbol_completion_matches,
   unknown_language_arch_info,  /* la_language_arch_info.  */
   default_print_array_index,
   default_pass_by_reference,
-  default_get_string,
-  NULL,                                /* la_get_symbol_name_cmp */
+  c_watch_location_expression,
+  NULL,                                /* la_get_symbol_name_matcher */
   iterate_over_symbols,
+  default_search_name_hash,
   &default_varobj_ops,
   NULL,
   NULL,
-  LANG_MAGIC
+  default_is_string_type_p,
+  "{...}"                      /* la_struct_too_deep_ellipsis */
 };
 
 /* These two structs define fake entries for the "local" and "auto"
@@ -843,9 +899,9 @@ const struct language_defn auto_language_defn =
   case_sensitive_on,
   array_row_major,
   macro_expansion_no,
+  NULL,
   &exp_descriptor_standard,
   unk_lang_parser,
-  unk_lang_error,
   null_post_parser,
   unk_lang_printchar,          /* Print character constant */
   unk_lang_printstr,
@@ -857,72 +913,32 @@ const struct language_defn auto_language_defn =
   default_read_var_value,      /* la_read_var_value */
   unk_lang_trampoline,         /* Language specific skip_trampoline */
   "this",                      /* name_of_this */
+  false,                       /* store_sym_names_in_linkage_form_p */
   basic_lookup_symbol_nonlocal,        /* lookup_symbol_nonlocal */
   basic_lookup_transparent_type,/* lookup_transparent_type */
   unk_lang_demangle,           /* Language specific symbol demangler */
-  unk_lang_class_name,         /* Language specific
-                                  class_name_from_physname */
-  unk_op_print_tab,            /* expression operators for printing */
-  1,                           /* c-style arrays */
-  0,                           /* String lower bound */
-  default_word_break_characters,
-  default_make_symbol_completion_list,
-  unknown_language_arch_info,  /* la_language_arch_info.  */
-  default_print_array_index,
-  default_pass_by_reference,
-  default_get_string,
-  NULL,                                /* la_get_symbol_name_cmp */
-  iterate_over_symbols,
-  &default_varobj_ops,
   NULL,
-  NULL,
-  LANG_MAGIC
-};
-
-const struct language_defn local_language_defn =
-{
-  "local",
-  "Local",
-  language_auto,
-  range_check_off,
-  case_sensitive_on,
-  array_row_major,
-  macro_expansion_no,
-  &exp_descriptor_standard,
-  unk_lang_parser,
-  unk_lang_error,
-  null_post_parser,
-  unk_lang_printchar,          /* Print character constant */
-  unk_lang_printstr,
-  unk_lang_emit_char,
-  unk_lang_print_type,         /* Print a type using appropriate syntax */
-  default_print_typedef,       /* Print a typedef using appropriate syntax */
-  unk_lang_val_print,          /* Print a value using appropriate syntax */
-  unk_lang_value_print,                /* Print a top-level value */
-  default_read_var_value,      /* la_read_var_value */
-  unk_lang_trampoline,         /* Language specific skip_trampoline */
-  "this",                      /* name_of_this */
-  basic_lookup_symbol_nonlocal,        /* lookup_symbol_nonlocal */
-  basic_lookup_transparent_type,/* lookup_transparent_type */
-  unk_lang_demangle,           /* Language specific symbol demangler */
   unk_lang_class_name,         /* Language specific
                                   class_name_from_physname */
   unk_op_print_tab,            /* expression operators for printing */
   1,                           /* c-style arrays */
   0,                           /* String lower bound */
   default_word_break_characters,
-  default_make_symbol_completion_list,
+  default_collect_symbol_completion_matches,
   unknown_language_arch_info,  /* la_language_arch_info.  */
   default_print_array_index,
   default_pass_by_reference,
-  default_get_string,
-  NULL,                                /* la_get_symbol_name_cmp */
+  c_watch_location_expression,
+  NULL,                                /* la_get_symbol_name_matcher */
   iterate_over_symbols,
+  default_search_name_hash,
   &default_varobj_ops,
   NULL,
   NULL,
-  LANG_MAGIC
+  default_is_string_type_p,
+  "{...}"                      /* la_struct_too_deep_ellipsis */
 };
+
 \f
 /* Per-architecture language information.  */
 
@@ -939,16 +955,15 @@ static void *
 language_gdbarch_post_init (struct gdbarch *gdbarch)
 {
   struct language_gdbarch *l;
-  int i;
 
   l = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct language_gdbarch);
-  for (i = 0; i < languages_size; i++)
-    {
-      if (languages[i] != NULL
-         && languages[i]->la_language_arch_info != NULL)
-       languages[i]->la_language_arch_info
-         (gdbarch, l->arch_info + languages[i]->la_language);
-    }
+  for (const auto &lang : languages)
+    if (lang != NULL && lang->la_language_arch_info != NULL)
+      {
+       lang->la_language_arch_info (gdbarch,
+                                    l->arch_info + lang->la_language);
+      }
+
   return l;
 }
 
@@ -956,8 +971,8 @@ struct type *
 language_string_char_type (const struct language_defn *la,
                           struct gdbarch *gdbarch)
 {
-  struct language_gdbarch *ld = gdbarch_data (gdbarch,
-                                             language_gdbarch_data);
+  struct language_gdbarch *ld
+    = (struct language_gdbarch *) gdbarch_data (gdbarch, language_gdbarch_data);
 
   return ld->arch_info[la->la_language].string_char_type;
 }
@@ -966,15 +981,15 @@ struct type *
 language_bool_type (const struct language_defn *la,
                    struct gdbarch *gdbarch)
 {
-  struct language_gdbarch *ld = gdbarch_data (gdbarch,
-                                             language_gdbarch_data);
+  struct language_gdbarch *ld
+    = (struct language_gdbarch *) gdbarch_data (gdbarch, language_gdbarch_data);
 
   if (ld->arch_info[la->la_language].bool_type_symbol)
     {
       struct symbol *sym;
 
       sym = lookup_symbol (ld->arch_info[la->la_language].bool_type_symbol,
-                          NULL, VAR_DOMAIN, NULL);
+                          NULL, VAR_DOMAIN, NULL).symbol;
       if (sym)
        {
          struct type *type = SYMBOL_TYPE (sym);
@@ -987,41 +1002,134 @@ language_bool_type (const struct language_defn *la,
   return ld->arch_info[la->la_language].bool_type_default;
 }
 
+/* Helper function for primitive type lookup.  */
+
+static struct type **
+language_lookup_primitive_type_1 (const struct language_arch_info *lai,
+                                 const char *name)
+{
+  struct type **p;
+
+  for (p = lai->primitive_type_vector; (*p) != NULL; p++)
+    {
+      if (strcmp (TYPE_NAME (*p), name) == 0)
+       return p;
+    }
+  return NULL;
+}
+
+/* See language.h.  */
+
 struct type *
-language_lookup_primitive_type_by_name (const struct language_defn *la,
-                                       struct gdbarch *gdbarch,
-                                       const char *name)
+language_lookup_primitive_type (const struct language_defn *la,
+                               struct gdbarch *gdbarch,
+                               const char *name)
+{
+  struct language_gdbarch *ld =
+    (struct language_gdbarch *) gdbarch_data (gdbarch, language_gdbarch_data);
+  struct type **typep;
+
+  typep = language_lookup_primitive_type_1 (&ld->arch_info[la->la_language],
+                                           name);
+  if (typep == NULL)
+    return NULL;
+  return *typep;
+}
+
+/* Helper function for type lookup as a symbol.
+   Create the symbol corresponding to type TYPE in language LANG.  */
+
+static struct symbol *
+language_alloc_type_symbol (enum language lang, struct type *type)
 {
-  struct language_gdbarch *ld = gdbarch_data (gdbarch,
-                                             language_gdbarch_data);
-  struct type *const *p;
+  struct symbol *symbol;
+  struct gdbarch *gdbarch;
+
+  gdb_assert (!TYPE_OBJFILE_OWNED (type));
+
+  gdbarch = TYPE_OWNER (type).gdbarch;
+  symbol = new (gdbarch_obstack (gdbarch)) struct symbol ();
+
+  symbol->name = TYPE_NAME (type);
+  symbol->set_language (lang, nullptr);
+  symbol->owner.arch = gdbarch;
+  SYMBOL_OBJFILE_OWNED (symbol) = 0;
+  SYMBOL_TYPE (symbol) = type;
+  SYMBOL_DOMAIN (symbol) = VAR_DOMAIN;
+  SYMBOL_ACLASS_INDEX (symbol) = LOC_TYPEDEF;
+
+  return symbol;
+}
+
+/* Initialize the primitive type symbols of language LD.
+   The primitive type vector must have already been initialized.  */
+
+static void
+language_init_primitive_type_symbols (struct language_arch_info *lai,
+                                     const struct language_defn *la,
+                                     struct gdbarch *gdbarch)
+{
+  int n;
+
+  gdb_assert (lai->primitive_type_vector != NULL);
+
+  for (n = 0; lai->primitive_type_vector[n] != NULL; ++n)
+    continue;
+
+  lai->primitive_type_symbols
+    = GDBARCH_OBSTACK_CALLOC (gdbarch, n + 1, struct symbol *);
+
+  for (n = 0; lai->primitive_type_vector[n] != NULL; ++n)
+    {
+      lai->primitive_type_symbols[n]
+       = language_alloc_type_symbol (la->la_language,
+                                     lai->primitive_type_vector[n]);
+    }
+
+  /* Note: The result of symbol lookup is normally a symbol *and* the block
+     it was found in.  Builtin types don't live in blocks.  We *could* give
+     them one, but there is no current need so to keep things simple symbol
+     lookup is extended to allow for BLOCK_FOUND to be NULL.  */
+}
+
+/* See language.h.  */
+
+struct symbol *
+language_lookup_primitive_type_as_symbol (const struct language_defn *la,
+                                         struct gdbarch *gdbarch,
+                                         const char *name)
+{
+  struct language_gdbarch *ld
+    = (struct language_gdbarch *) gdbarch_data (gdbarch, language_gdbarch_data);
+  struct language_arch_info *lai = &ld->arch_info[la->la_language];
+  struct type **typep;
+  struct symbol *sym;
 
   if (symbol_lookup_debug)
     {
       fprintf_unfiltered (gdb_stdlog,
-                         "language_lookup_primitive_type_by_name"
+                         "language_lookup_primitive_type_as_symbol"
                          " (%s, %s, %s)",
                          la->la_name, host_address_to_string (gdbarch), name);
     }
 
-  for (p = ld->arch_info[la->la_language].primitive_type_vector;
-       (*p) != NULL;
-       p++)
+  typep = language_lookup_primitive_type_1 (lai, name);
+  if (typep == NULL)
     {
-      if (strcmp (TYPE_NAME (*p), name) == 0)
-       {
-         if (symbol_lookup_debug)
-           {
-             fprintf_unfiltered (gdb_stdlog, " = %s\n",
-                                 host_address_to_string (*p));
-           }
-         return (*p);
-       }
+      if (symbol_lookup_debug)
+       fprintf_unfiltered (gdb_stdlog, " = NULL\n");
+      return NULL;
     }
 
+  /* The set of symbols is lazily initialized.  */
+  if (lai->primitive_type_symbols == NULL)
+    language_init_primitive_type_symbols (lai, la, gdbarch);
+
+  sym = lai->primitive_type_symbols[typep - lai->primitive_type_vector];
+
   if (symbol_lookup_debug)
-    fprintf_unfiltered (gdb_stdlog, " = NULL\n");
-  return (NULL);
+    fprintf_unfiltered (gdb_stdlog, " = %s\n", host_address_to_string (sym));
+  return sym;
 }
 
 /* Initialize the language routines.  */
@@ -1054,29 +1162,26 @@ _initialize_language (void)
 
   add_setshow_enum_cmd ("range", class_support, type_or_range_names,
                        &range,
-                       _("Set range checking.  (on/warn/off/auto)"),
-                       _("Show range checking.  (on/warn/off/auto)"),
+                       _("Set range checking (on/warn/off/auto)."),
+                       _("Show range checking (on/warn/off/auto)."),
                        NULL, set_range_command,
                        show_range_command,
                        &setchecklist, &showchecklist);
 
   add_setshow_enum_cmd ("case-sensitive", class_support, case_sensitive_names,
                        &case_sensitive, _("\
-Set case sensitivity in name search.  (on/off/auto)"), _("\
-Show case sensitivity in name search.  (on/off/auto)"), _("\
+Set case sensitivity in name search (on/off/auto)."), _("\
+Show case sensitivity in name search (on/off/auto)."), _("\
 For Fortran the default is off; for other languages the default is on."),
                        set_case_command,
                        show_case_command,
                        &setlist, &showlist);
 
-  add_language (&auto_language_defn);
-  add_language (&local_language_defn);
-  add_language (&unknown_language_defn);
+  add_set_language_command ();
 
-  language = xstrdup ("auto");
-  type = xstrdup ("auto");
-  range = xstrdup ("auto");
-  case_sensitive = xstrdup ("auto");
+  language = "auto";
+  range = "auto";
+  case_sensitive = "auto";
 
   /* Have the above take effect.  */
   set_language (language_auto);
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