Stop the MIPS assembler from accepting ifunc symbols.

[deliverable/binutils-gdb.git] / gdb / language.c

diff --git a/gdb/language.c b/gdb/language.c
index 44bbeb4cb3b91978aded56c1b7cc7bc4974913e6..c13fd1a406a5bbf987b641fbc6ebcf7a5e4d9280 100644 (file)
--- a/gdb/language.c
+++ b/gdb/language.c
@@ -1,6 +1,6 @@
 /* Multiple source language support for GDB.
 
 /* Multiple source language support for GDB.
 

-   Copyright (C) 1991-2018 Free Software Foundation, Inc.
+   Copyright (C) 1991-2020 Free Software Foundation, Inc.

 
    Contributed by the Department of Computer Science at the State University
    of New York at Buffalo.
 
    Contributed by the Department of Computer Science at the State University
    of New York at Buffalo.


@@ -45,6 +45,7 @@
 #include "frame.h"
 #include "c-lang.h"
 #include <algorithm>
 #include "frame.h"
 #include "c-lang.h"
 #include <algorithm>

+#include "gdbarch.h"

 
 static int unk_lang_parser (struct parser_state *);
 
 
 static int unk_lang_parser (struct parser_state *);
 


@@ -105,17 +106,15 @@ static const struct language_defn *languages[] = {
   &ada_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;
    commands.  */
 static const char *language;

-static const char *type;

 static const char *range;
 static const char *case_sensitive;
 
 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.  */
 \f
 /* This page contains the functions corresponding to GDB commands
    and their helpers.  */


@@ -147,7 +146,7 @@ show_language_command (struct ui_file *file, int from_tty,
       if (flang != language_unknown
          && language_mode == language_mode_manual
          && current_language->la_language != flang)
       if (flang != language_unknown
          && language_mode == language_mode_manual
          && current_language->la_language != flang)

-       printf_filtered ("%s\n", lang_frame_mismatch_warn);
+       printf_filtered ("%s\n", _(lang_frame_mismatch_warn));

     }
 }
 
     }
 }
 


@@ -173,18 +172,17 @@ set_language_command (const char *ignore,
              /* Enter auto mode.  Set to the current frame's language, if
                  known, or fallback to the initial language.  */
              language_mode = language_mode_auto;
              /* Enter auto mode.  Set to the current frame's language, if
                  known, or fallback to the initial language.  */
              language_mode = language_mode_auto;

-             TRY
+             try

                {
                  struct frame_info *frame;
 
                  frame = get_selected_frame (NULL);
                  flang = get_frame_language (frame);
                }
                {
                  struct frame_info *frame;
 
                  frame = get_selected_frame (NULL);
                  flang = get_frame_language (frame);
                }

-             CATCH (ex, RETURN_MASK_ERROR)
+             catch (const gdb_exception_error &ex)

                {
                  flang = language_unknown;
                }
                {
                  flang = language_unknown;
                }

-             END_CATCH

 
              if (flang != language_unknown)
                set_language (flang);
 
              if (flang != language_unknown)
                set_language (flang);


@@ -561,7 +559,7 @@ add_set_language_command ()
 
   doc.printf (_("Set the current source language.\n"
                "The currently understood settings are:\n\nlocal or "
 
   doc.printf (_("Set the current source language.\n"
                "The currently understood settings are:\n\nlocal or "

-               "auto    Automatic setting based on source file\n"));
+               "auto    Automatic setting based on source file"));

 
   for (const auto &lang : languages)
     {
 
   for (const auto &lang : languages)
     {


@@ -572,7 +570,9 @@ add_set_language_command ()
 
       /* FIXME: i18n: for now assume that the human-readable name is
         just a capitalization of the internal name.  */
 
       /* FIXME: i18n: for now assume that the human-readable name is
         just a capitalization of the internal name.  */

-      doc.printf ("%-16s Use the %c%s language\n",
+      /* 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,
                  /* Capitalize first letter of language name.  */
                  toupper (lang->la_name[0]),


@@ -625,7 +625,7 @@ language_demangle (const struct language_defn *current_language,
   return NULL;
 }
 
   return NULL;
 }
 

-/* See langauge.h.  */
+/* See language.h.  */

 
 int
 language_sniff_from_mangled_name (const struct language_defn *lang,
 
 int
 language_sniff_from_mangled_name (const struct language_defn *lang,


@@ -652,21 +652,23 @@ language_class_name_from_physname (const struct language_defn *lang,
   return NULL;
 }
 
   return NULL;
 }
 

-/* Return non-zero if TYPE should be passed (and returned) by
-   reference at the language level.  */
-int
+/* Return information about whether TYPE should be passed
+   (and returned) by reference at the language level.  */
+
+struct language_pass_by_ref_info

 language_pass_by_reference (struct type *type)
 {
   return current_language->la_pass_by_reference (type);
 }
 
 language_pass_by_reference (struct type *type)
 {
   return current_language->la_pass_by_reference (type);
 }
 

-/* Return zero; by default, types are passed by value at the language
-   level.  The target ABI may pass or return some structs by reference
-   independent of this.  */
-int
+/* Return a default struct that provides pass-by-reference information
+   about the given TYPE.  Languages should update the default values
+   as appropriate.  */
+
+struct language_pass_by_ref_info

 default_pass_by_reference (struct type *type)
 {
 default_pass_by_reference (struct type *type)
 {

-  return 0;
+  return {};

 }
 
 /* Return the default string containing the list of characters
 }
 
 /* Return the default string containing the list of characters


@@ -690,13 +692,6 @@ default_print_array_index (struct value *index_value, struct ui_file *stream,
   fprintf_filtered (stream, "] = ");
 }
 
   fprintf_filtered (stream, "] = ");
 }
 

-void
-default_get_string (struct value *value, gdb_byte **buffer, int *length,
-                   struct type **char_type, const char **charset)
-{
-  error (_("Getting a string is unsupported in this language."));
-}
-

 /* See language.h.  */
 
 bool
 /* See language.h.  */
 
 bool


@@ -704,14 +699,14 @@ default_symbol_name_matcher (const char *symbol_search_name,
                             const lookup_name_info &lookup_name,
                             completion_match_result *comp_match_res)
 {
                             const lookup_name_info &lookup_name,
                             completion_match_result *comp_match_res)
 {

-  const std::string &name = lookup_name.name ();
+  gdb::string_view 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);
 
   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 (),
+  if (strncmp_iw_with_mode (symbol_search_name, name.data (), name.size (),

                            mode, language_minimal, match_for_lcd) == 0)
     {
       if (comp_match_res != NULL)
                            mode, language_minimal, match_for_lcd) == 0)
     {
       if (comp_match_res != NULL)


@@ -724,6 +719,20 @@ default_symbol_name_matcher (const char *symbol_search_name,
 
 /* See language.h.  */
 
 
 /* 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)
 symbol_name_matcher_ftype *
 get_symbol_name_matcher (const language_defn *lang,
                         const lookup_name_info &lookup_name)


@@ -783,14 +792,12 @@ unk_lang_print_type (struct type *type, const char *varstring,
 }
 
 static void
 }
 
 static void

-unk_lang_val_print (struct type *type,
-                   int embedded_offset, CORE_ADDR address,
-                   struct ui_file *stream, int recurse,
-                   struct value *val,
-                   const struct value_print_options *options)
+unk_lang_value_print_inner (struct value *val,
+                           struct ui_file *stream, int recurse,
+                           const struct value_print_options *options)

 {
   error (_("internal error - unimplemented "
 {
   error (_("internal error - unimplemented "

-          "function unk_lang_val_print called."));
+          "function unk_lang_value_print_inner called."));

 }
 
 static void
 }
 
 static void


@@ -850,7 +857,7 @@ const struct language_defn unknown_language_defn =
   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_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_inner,  /* la_value_print_inner */

   unk_lang_value_print,                /* Print a top-level value */
   default_read_var_value,      /* la_read_var_value */
   unk_lang_trampoline,         /* Language specific skip_trampoline */
   unk_lang_value_print,                /* Print a top-level value */
   default_read_var_value,      /* la_read_var_value */
   unk_lang_trampoline,         /* Language specific skip_trampoline */


@@ -870,7 +877,6 @@ const struct language_defn unknown_language_defn =
   unknown_language_arch_info,  /* la_language_arch_info.  */
   default_print_array_index,
   default_pass_by_reference,
   unknown_language_arch_info,  /* la_language_arch_info.  */
   default_print_array_index,
   default_pass_by_reference,

-  default_get_string,

   c_watch_location_expression,
   NULL,                                /* la_get_symbol_name_matcher */
   iterate_over_symbols,
   c_watch_location_expression,
   NULL,                                /* la_get_symbol_name_matcher */
   iterate_over_symbols,


@@ -878,7 +884,8 @@ const struct language_defn unknown_language_defn =
   &default_varobj_ops,
   NULL,
   NULL,
   &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"
 };
 
 /* These two structs define fake entries for the "local" and "auto"


@@ -901,7 +908,7 @@ const struct language_defn auto_language_defn =
   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_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_inner,  /* la_value_print_inner */

   unk_lang_value_print,                /* Print a top-level value */
   default_read_var_value,      /* la_read_var_value */
   unk_lang_trampoline,         /* Language specific skip_trampoline */
   unk_lang_value_print,                /* Print a top-level value */
   default_read_var_value,      /* la_read_var_value */
   unk_lang_trampoline,         /* Language specific skip_trampoline */


@@ -921,7 +928,6 @@ const struct language_defn auto_language_defn =
   unknown_language_arch_info,  /* la_language_arch_info.  */
   default_print_array_index,
   default_pass_by_reference,
   unknown_language_arch_info,  /* la_language_arch_info.  */
   default_print_array_index,
   default_pass_by_reference,

-  default_get_string,

   c_watch_location_expression,
   NULL,                                /* la_get_symbol_name_matcher */
   iterate_over_symbols,
   c_watch_location_expression,
   NULL,                                /* la_get_symbol_name_matcher */
   iterate_over_symbols,


@@ -929,7 +935,8 @@ const struct language_defn auto_language_defn =
   &default_varobj_ops,
   NULL,
   NULL,
   &default_varobj_ops,
   NULL,
   NULL,

-  LANG_MAGIC
+  default_is_string_type_p,
+  "{...}"                      /* la_struct_too_deep_ellipsis */

 };
 
 \f
 };
 
 \f


@@ -1041,10 +1048,10 @@ language_alloc_type_symbol (enum language lang, struct type *type)
   gdb_assert (!TYPE_OBJFILE_OWNED (type));
 
   gdbarch = TYPE_OWNER (type).gdbarch;
   gdb_assert (!TYPE_OBJFILE_OWNED (type));
 
   gdbarch = TYPE_OWNER (type).gdbarch;

-  symbol = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct symbol);
+  symbol = new (gdbarch_obstack (gdbarch)) struct symbol ();

 
 

-  symbol->ginfo.name = TYPE_NAME (type);
-  symbol->ginfo.language = lang;
+  symbol->m_name = TYPE_NAME (type);
+  symbol->set_language (lang, nullptr);

   symbol->owner.arch = gdbarch;
   SYMBOL_OBJFILE_OWNED (symbol) = 0;
   SYMBOL_TYPE (symbol) = type;
   symbol->owner.arch = gdbarch;
   SYMBOL_OBJFILE_OWNED (symbol) = 0;
   SYMBOL_TYPE (symbol) = type;


@@ -1127,8 +1134,9 @@ language_lookup_primitive_type_as_symbol (const struct language_defn *la,
 
 /* Initialize the language routines.  */
 
 
 /* Initialize the language routines.  */
 

+void _initialize_language ();

 void
 void

-_initialize_language (void)
+_initialize_language ()

 {
   static const char *const type_or_range_names[]
     = { "on", "off", "warn", "auto", NULL };
 {
   static const char *const type_or_range_names[]
     = { "on", "off", "warn", "auto", NULL };


@@ -1155,16 +1163,16 @@ _initialize_language (void)
 
   add_setshow_enum_cmd ("range", class_support, type_or_range_names,
                        &range,
 
   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, _("\
                        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,
 For Fortran the default is off; for other languages the default is on."),
                        set_case_command,
                        show_case_command,


@@ -1172,10 +1180,9 @@ For Fortran the default is off; for other languages the default is on."),
 
   add_set_language_command ();
 
 
   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);
 
   /* Have the above take effect.  */
   set_language (language_auto);