/* Multiple source language support for GDB.
- Copyright 1991, 1992, 2000 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.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* This file contains functions that return things that are specific
to languages. Each function should examine current_language if necessary,
- and return the appropriate result. */
+ and return the appropriate result. */
/* FIXME: Most of these would be better organized as macros which
return data out of a "language-specific" struct pointer that is set
#include "defs.h"
#include <ctype.h>
-#include "gdb_string.h"
-
#include "symtab.h"
#include "gdbtypes.h"
#include "value.h"
#include "gdbcmd.h"
-#include "frame.h"
#include "expression.h"
#include "language.h"
+#include "varobj.h"
#include "target.h"
#include "parser-defs.h"
+#include "demangle.h"
+#include "symfile.h"
+#include "cp-support.h"
+#include "frame.h"
+#include "c-lang.h"
+#include <algorithm>
+#include "gdbarch.h"
-extern void _initialize_language PARAMS ((void));
-
-static void
-show_language_command PARAMS ((char *, int));
-
-static void
-set_language_command PARAMS ((char *, int));
-
-static void
-show_type_command PARAMS ((char *, int));
-
-static void
-set_type_command PARAMS ((char *, int));
-
-static void
-show_range_command PARAMS ((char *, int));
-
-static void
-set_range_command PARAMS ((char *, int));
-
-static void
-set_range_str PARAMS ((void));
-
-static void
-set_type_str PARAMS ((void));
-
-static void
-set_lang_str PARAMS ((void));
-
-static void
-unk_lang_error PARAMS ((char *));
-
-static int
-unk_lang_parser PARAMS ((void));
-
-static void
-show_check PARAMS ((char *, int));
-
-static void
-set_check PARAMS ((char *, int));
-
-static void
-set_type_range PARAMS ((void));
-
-static void unk_lang_emit_char (int c, struct ui_file *stream, int quoter);
-
-static void unk_lang_printchar (int c, struct ui_file *stream);
+static int unk_lang_parser (struct parser_state *);
-static void unk_lang_printstr (struct ui_file * stream, char *string,
- unsigned int length, int width,
- int force_ellipses);
+static void set_range_case (void);
-static struct type *
- unk_lang_create_fundamental_type PARAMS ((struct objfile *, int));
+static void unk_lang_emit_char (int c, struct type *type,
+ struct ui_file *stream, int quoter);
-static void unk_lang_print_type (struct type *, char *, struct ui_file *,
- int, int);
+static void unk_lang_printchar (int c, struct type *type,
+ struct ui_file *stream);
-static int unk_lang_val_print (struct type *, char *, int, CORE_ADDR,
- struct ui_file *, int, int, int,
- enum val_prettyprint);
+static void unk_lang_value_print (struct value *, struct ui_file *,
+ const struct value_print_options *);
-static int unk_lang_value_print (value_ptr, struct ui_file *, int, enum val_prettyprint);
+static CORE_ADDR unk_lang_trampoline (struct frame_info *, CORE_ADDR pc);
/* Forward declaration */
extern const struct language_defn unknown_language_defn;
-extern char *warning_pre_print;
/* The current (default at startup) state of type and range checking.
(If the modes are set to "auto", though, these are changed based
enum range_mode range_mode = range_mode_auto;
enum range_check range_check = range_check_off;
-enum type_mode type_mode = type_mode_auto;
-enum type_check type_check = type_check_off;
+enum case_mode case_mode = case_mode_auto;
+enum case_sensitivity case_sensitivity = case_sensitive_on;
-/* The current language and language_mode (see language.h) */
+/* The current language and language_mode (see language.h). */
const struct language_defn *current_language = &unknown_language_defn;
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 "set language/type/range" commands all put stuff in these
- buffers. This is to make them work as set/show commands. The
- user's string is copied here, then the set_* commands look at
- them and update them to something that looks nice when it is
- printed out. */
+/* 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,
+};
-static char *language;
-static char *type;
-static char *range;
+/* The current values of the "set language/range/case-sensitive" enum
+ commands. */
+static const char *language;
+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. */
+ and their helpers. */
/* Show command. Display a warning if the language set
- does not match the frame. */
+ does not match the frame. */
static void
-show_language_command (ignore, from_tty)
- char *ignore;
- int from_tty;
+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,
+ _("The current source language is "
+ "\"auto; currently %s\".\n"),
+ current_language->la_name);
+ else
+ fprintf_filtered (gdb_stdout,
+ _("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. */
+/* Set command. Change the current working language. */
static void
-set_language_command (ignore, from_tty)
- char *ignore;
- int from_tty;
+set_language_command (const char *ignore,
+ int from_tty, struct cmd_list_element *c)
{
- int i;
- enum language flang;
- char *err_lang;
+ enum language flang = language_unknown;
- if (!language || !language[0])
- {
- printf_unfiltered ("The currently understood settings are:\n\n");
- printf_unfiltered ("local or auto Automatic setting based on source file\n");
-
- for (i = 0; i < languages_size; ++i)
- {
- /* Already dealt with these above. */
- if (languages[i]->la_language == language_unknown
- || languages[i]->la_language == language_auto)
- continue;
-
- /* FIXME for now assume that the human-readable name is just
- a capitalization of the internal name. */
- printf_unfiltered ("%-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);
- }
- /* Restore the silly string. */
- set_language (current_language->la_language);
- return;
- }
+ /* "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 (STREQ (languages[i]->la_name, language))
+ 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. */
+ /* 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
+ set_initial_language ();
expected_language = current_language;
return;
}
{
/* Enter manual mode. Set the specified language. */
language_mode = language_mode_manual;
- current_language = languages[i];
- set_type_range ();
- set_lang_str ();
+ current_language = lang;
+ set_range_case ();
expected_language = current_language;
return;
}
}
}
- /* Reset the language (esp. the global string "language") to the
- correct values. */
- err_lang = savestring (language, strlen (language));
- make_cleanup (free, err_lang); /* Free it after error */
- set_language (current_language->la_language);
- error ("Unknown language `%s'.", err_lang);
-}
-
-/* Show command. Display a warning if the type setting does
- not match the current language. */
-static void
-show_type_command (ignore, from_tty)
- char *ignore;
- int from_tty;
-{
- if (type_check != current_language->la_type_check)
- printf_unfiltered (
- "Warning: the current type check setting does not match the language.\n");
+ internal_error (__FILE__, __LINE__,
+ "Couldn't find language `%s' in known languages list.",
+ language);
}
-/* Set command. Change the setting for type checking. */
+/* Show command. Display a warning if the range setting does
+ not match the current language. */
static void
-set_type_command (ignore, from_tty)
- char *ignore;
- int from_tty;
+show_range_command (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
{
- if (STREQ (type, "on"))
- {
- type_check = type_check_on;
- type_mode = type_mode_manual;
- }
- else if (STREQ (type, "warn"))
- {
- type_check = type_check_warn;
- type_mode = type_mode_manual;
- }
- else if (STREQ (type, "off"))
- {
- type_check = type_check_off;
- type_mode = type_mode_manual;
- }
- else if (STREQ (type, "auto"))
+ if (range_mode == range_mode_auto)
{
- type_mode = type_mode_auto;
- set_type_range ();
- /* Avoid hitting the set_type_str call below. We
- did it in set_type_range. */
- return;
+ const char *tmp;
+
+ switch (range_check)
+ {
+ case range_check_on:
+ tmp = "on";
+ break;
+ case range_check_off:
+ tmp = "off";
+ break;
+ case range_check_warn:
+ tmp = "warn";
+ break;
+ default:
+ internal_error (__FILE__, __LINE__,
+ "Unrecognized range check setting.");
+ }
+
+ fprintf_filtered (gdb_stdout,
+ _("Range checking is \"auto; currently %s\".\n"),
+ tmp);
}
else
- {
- warning ("Unrecognized type check setting: \"%s\"", type);
- }
- set_type_str ();
- show_type_command ((char *) NULL, from_tty);
-}
-
-/* Show command. Display a warning if the range setting does
- not match the current language. */
-static void
-show_range_command (ignore, from_tty)
- char *ignore;
- int from_tty;
-{
+ fprintf_filtered (gdb_stdout, _("Range checking is \"%s\".\n"),
+ value);
if (range_check != current_language->la_range_check)
- printf_unfiltered (
- "Warning: the current range check setting does not match the language.\n");
+ warning (_("the current range check setting "
+ "does not match the language.\n"));
}
-/* Set command. Change the setting for range checking. */
+/* Set command. Change the setting for range checking. */
static void
-set_range_command (ignore, from_tty)
- char *ignore;
- int from_tty;
+set_range_command (const char *ignore,
+ int from_tty, struct cmd_list_element *c)
{
- if (STREQ (range, "on"))
+ if (strcmp (range, "on") == 0)
{
range_check = range_check_on;
range_mode = range_mode_manual;
}
- else if (STREQ (range, "warn"))
+ else if (strcmp (range, "warn") == 0)
{
range_check = range_check_warn;
range_mode = range_mode_manual;
}
- else if (STREQ (range, "off"))
+ else if (strcmp (range, "off") == 0)
{
range_check = range_check_off;
range_mode = range_mode_manual;
}
- else if (STREQ (range, "auto"))
+ else if (strcmp (range, "auto") == 0)
{
range_mode = range_mode_auto;
- set_type_range ();
- /* Avoid hitting the set_range_str call below. We
- did it in set_type_range. */
+ set_range_case ();
return;
}
else
{
- warning ("Unrecognized range check setting: \"%s\"", range);
+ internal_error (__FILE__, __LINE__,
+ _("Unrecognized range check setting: \"%s\""), range);
}
- set_range_str ();
- show_range_command ((char *) 0, from_tty);
+ if (range_check != current_language->la_range_check)
+ warning (_("the current range check setting "
+ "does not match the language.\n"));
}
-/* Set the status of range and type checking based on
- the current modes and the current language.
- If SHOW is non-zero, then print out the current language,
- type and range checking status. */
+/* Show command. Display a warning if the case sensitivity setting does
+ not match the current language. */
static void
-set_type_range ()
-{
-
- if (range_mode == range_mode_auto)
- range_check = current_language->la_range_check;
-
- if (type_mode == type_mode_auto)
- type_check = current_language->la_type_check;
-
- set_type_str ();
- set_range_str ();
-}
-
-/* Set current language to (enum language) LANG. Returns previous language. */
-
-enum language
-set_language (lang)
- enum language lang;
+show_case_command (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
{
- int i;
- enum language prev_language;
-
- prev_language = current_language->la_language;
-
- for (i = 0; i < languages_size; i++)
+ if (case_mode == case_mode_auto)
{
- if (languages[i]->la_language == lang)
+ const char *tmp = NULL;
+
+ switch (case_sensitivity)
{
- current_language = languages[i];
- set_type_range ();
- set_lang_str ();
+ case case_sensitive_on:
+ tmp = "on";
break;
+ case case_sensitive_off:
+ tmp = "off";
+ break;
+ default:
+ internal_error (__FILE__, __LINE__,
+ "Unrecognized case-sensitive setting.");
}
+
+ fprintf_filtered (gdb_stdout,
+ _("Case sensitivity in "
+ "name search is \"auto; currently %s\".\n"),
+ tmp);
}
+ else
+ fprintf_filtered (gdb_stdout,
+ _("Case sensitivity in name search is \"%s\".\n"),
+ value);
- return prev_language;
+ if (case_sensitivity != current_language->la_case_sensitivity)
+ warning (_("the current case sensitivity setting does not match "
+ "the language.\n"));
}
-\f
-/* This page contains functions that update the global vars
- language, type and range. */
-static void
-set_lang_str ()
-{
- char *prefix = "";
-
- free (language);
- if (language_mode == language_mode_auto)
- prefix = "auto; currently ";
- language = concat (prefix, current_language->la_name, NULL);
-}
+/* Set command. Change the setting for case sensitivity. */
static void
-set_type_str ()
+set_case_command (const char *ignore, int from_tty, struct cmd_list_element *c)
{
- char *tmp = NULL, *prefix = "";
-
- free (type);
- if (type_mode == type_mode_auto)
- prefix = "auto; currently ";
-
- switch (type_check)
- {
- case type_check_on:
- tmp = "on";
- break;
- case type_check_off:
- tmp = "off";
- break;
- case type_check_warn:
- tmp = "warn";
- break;
- default:
- error ("Unrecognized type check setting.");
- }
-
- type = concat (prefix, tmp, NULL);
+ if (strcmp (case_sensitive, "on") == 0)
+ {
+ case_sensitivity = case_sensitive_on;
+ case_mode = case_mode_manual;
+ }
+ else if (strcmp (case_sensitive, "off") == 0)
+ {
+ case_sensitivity = case_sensitive_off;
+ case_mode = case_mode_manual;
+ }
+ else if (strcmp (case_sensitive, "auto") == 0)
+ {
+ case_mode = case_mode_auto;
+ set_range_case ();
+ return;
+ }
+ else
+ {
+ internal_error (__FILE__, __LINE__,
+ "Unrecognized case-sensitive setting: \"%s\"",
+ case_sensitive);
+ }
+
+ if (case_sensitivity != current_language->la_case_sensitivity)
+ warning (_("the current case sensitivity setting does not match "
+ "the language.\n"));
}
+/* Set the status of range and type checking and case sensitivity based on
+ the current modes and the current language.
+ If SHOW is non-zero, then print out the current language,
+ type and range checking status. */
static void
-set_range_str ()
+set_range_case (void)
{
- char *tmp, *pref = "";
-
if (range_mode == range_mode_auto)
- pref = "auto; currently ";
-
- switch (range_check)
- {
- case range_check_on:
- tmp = "on";
- break;
- case range_check_off:
- tmp = "off";
- break;
- case range_check_warn:
- tmp = "warn";
- break;
- default:
- error ("Unrecognized range check setting.");
- }
+ range_check = current_language->la_range_check;
- free (range);
- range = concat (pref, tmp, NULL);
+ if (case_mode == case_mode_auto)
+ case_sensitivity = current_language->la_case_sensitivity;
}
+/* Set current language to (enum language) LANG. Returns previous
+ language. */
+
+enum language
+set_language (enum language lang)
+{
+ enum language prev_language;
+
+ prev_language = current_language->la_language;
+ current_language = languages[lang];
+ set_range_case ();
+ return prev_language;
+}
+\f
/* Print out the current language settings: language, range and
type checking. If QUIETLY, print only what has changed. */
void
-language_info (quietly)
- int quietly;
+language_info (int quietly)
{
if (quietly && expected_language == current_language)
return;
expected_language = current_language;
- printf_unfiltered ("Current language: %s\n", language);
- show_language_command ((char *) 0, 1);
+ printf_unfiltered (_("Current language: %s\n"), language);
+ show_language_command (NULL, 1, NULL, NULL);
if (!quietly)
{
- printf_unfiltered ("Type checking: %s\n", type);
- show_type_command ((char *) 0, 1);
- printf_unfiltered ("Range checking: %s\n", range);
- show_range_command ((char *) 0, 1);
+ printf_unfiltered (_("Range checking: %s\n"), range);
+ show_range_command (NULL, 1, NULL, NULL);
+ printf_unfiltered (_("Case sensitivity: %s\n"), case_sensitive);
+ show_case_command (NULL, 1, NULL, NULL);
}
}
\f
-/* Return the result of a binary operation. */
-#if 0 /* Currently unused */
+/* Returns non-zero if the value is a pointer type. */
+int
+pointer_type (struct type *type)
+{
+ return TYPE_CODE (type) == TYPE_CODE_PTR || TYPE_IS_REFERENCE (type);
+}
-struct type *
-binop_result_type (v1, v2)
- value_ptr v1, v2;
+\f
+/* This page contains functions that return info about
+ (struct value) values used in GDB. */
+
+/* Returns non-zero if the value VAL represents a true value. */
+int
+value_true (struct value *val)
{
- int size, uns;
- struct type *t1 = check_typedef (VALUE_TYPE (v1));
- struct type *t2 = check_typedef (VALUE_TYPE (v2));
+ /* It is possible that we should have some sort of error if a non-boolean
+ value is used in this context. Possibly dependent on some kind of
+ "boolean-checking" option like range checking. But it should probably
+ not depend on the language except insofar as is necessary to identify
+ a "boolean" value (i.e. in C using a float, pointer, etc., as a boolean
+ should be an error, probably). */
+ return !value_logical_not (val);
+}
+\f
+/* This page contains functions for the printing out of
+ error messages that occur during type- and range-
+ checking. */
- int l1 = TYPE_LENGTH (t1);
- int l2 = TYPE_LENGTH (t2);
+/* This is called when a language fails a range-check. The
+ first argument should be a printf()-style format string, and the
+ rest of the arguments should be its arguments. If range_check is
+ range_check_on, an error is printed; if range_check_warn, a warning;
+ otherwise just the message. */
+
+void
+range_error (const char *string,...)
+{
+ va_list args;
- switch (current_language->la_language)
+ va_start (args, string);
+ switch (range_check)
{
- case language_c:
- case language_cplus:
- if (TYPE_CODE (t1) == TYPE_CODE_FLT)
- return TYPE_CODE (t2) == TYPE_CODE_FLT && l2 > l1 ?
- VALUE_TYPE (v2) : VALUE_TYPE (v1);
- else if (TYPE_CODE (t2) == TYPE_CODE_FLT)
- return TYPE_CODE (t1) == TYPE_CODE_FLT && l1 > l2 ?
- VALUE_TYPE (v1) : VALUE_TYPE (v2);
- else if (TYPE_UNSIGNED (t1) && l1 > l2)
- return VALUE_TYPE (v1);
- else if (TYPE_UNSIGNED (t2) && l2 > l1)
- return VALUE_TYPE (v2);
- else /* Both are signed. Result is the longer type */
- return l1 > l2 ? VALUE_TYPE (v1) : VALUE_TYPE (v2);
+ case range_check_warn:
+ vwarning (string, args);
+ break;
+ case range_check_on:
+ verror (string, args);
break;
- case language_m2:
- /* If we are doing type-checking, l1 should equal l2, so this is
- not needed. */
- return l1 > l2 ? VALUE_TYPE (v1) : VALUE_TYPE (v2);
+ case range_check_off:
+ /* FIXME: cagney/2002-01-30: Should this function print anything
+ when range error is off? */
+ vfprintf_filtered (gdb_stderr, string, args);
+ fprintf_filtered (gdb_stderr, "\n");
break;
- case language_chill:
- error ("Missing Chill support in function binop_result_check."); /*FIXME */
+ default:
+ internal_error (__FILE__, __LINE__, _("bad switch"));
}
- abort ();
- return (struct type *) 0; /* For lint */
+ va_end (args);
}
-
-#endif /* 0 */
\f
-/* This page contains functions that return format strings for
- printf for printing out numbers in different formats */
+/* This page contains miscellaneous functions. */
-/* Returns the appropriate printf format for hexadecimal
- numbers. */
-char *
-local_hex_format_custom (pre)
- char *pre;
+/* Return the language enum for a given language string. */
+
+enum language
+language_enum (const char *str)
{
- static char form[50];
-
- strcpy (form, local_hex_format_prefix ());
- strcat (form, "%");
- strcat (form, pre);
- strcat (form, local_hex_format_specifier ());
- strcat (form, local_hex_format_suffix ());
- return form;
+ for (const auto &lang : languages)
+ if (strcmp (lang->la_name, str) == 0)
+ return lang->la_language;
+
+ if (strcmp (str, "local") == 0)
+ return language_auto;
+
+ return language_unknown;
}
-/* Converts a number to hexadecimal (without leading "0x") and stores it in a
- static string. Returns a pointer to this string. */
+/* Return the language struct for a given language enum. */
-char *
-longest_raw_hex_string (num)
- LONGEST num;
+const struct language_defn *
+language_def (enum language lang)
{
- static char res_longest_raw_hex_string[50];
- long long ll = num; /* MERGEBUG ?? see below */
- res_longest_raw_hex_string[0] = 0;
- /* MERGEBUG ?? As a quick fix I am replacing this with sprintf
- strcat_address_numeric (num, 0, res_longest_raw_hex_string, 50);
- */
-
- sprintf (res_longest_raw_hex_string, "%llx", ll);
- return res_longest_raw_hex_string;
+ return languages[lang];
}
-/* Converts a number to hexadecimal and stores it in a static
- string. Returns a pointer to this string. */
-char *
-local_hex_string (num)
- unsigned long num;
-{
- static char res[50];
+/* Return the language as a string. */
- sprintf (res, local_hex_format (), num);
- return res;
+const char *
+language_str (enum language lang)
+{
+ return languages[lang]->la_name;
}
-/* Converts a LONGEST number to hexadecimal and stores it in a static
- string. Returns a pointer to this string. */
-char *
-longest_local_hex_string (num)
- LONGEST num;
+static void
+set_check (const char *ignore, int from_tty)
{
- return longest_local_hex_string_custom (num, "l");
+ printf_unfiltered (
+ "\"set check\" must be followed by the name of a check subcommand.\n");
+ help_list (setchecklist, "set check ", all_commands, gdb_stdout);
}
-/* Converts a number to custom hexadecimal and stores it in a static
- string. Returns a pointer to this string. */
-char *
-local_hex_string_custom (num, pre)
- unsigned long num;
- char *pre;
+static void
+show_check (const char *ignore, int from_tty)
{
- static char res[50];
-
- sprintf (res, local_hex_format_custom (pre), num);
- return res;
+ cmd_show_list (showchecklist, from_tty, "");
}
+\f
-/* Converts a LONGEST number to custom hexadecimal and stores it in a static
- string. Returns a pointer to this string. Note that the width parameter
- should end with "l", e.g. "08l" as with calls to local_hex_string_custom */
+/* Build and install the "set language LANG" command. */
-char *
-longest_local_hex_string_custom (num, width)
- LONGEST num;
- char *width;
+static void
+add_set_language_command ()
{
-#define RESULT_BUF_LEN 50
- static char res2[RESULT_BUF_LEN];
- char format[RESULT_BUF_LEN];
-#if !defined (PRINTF_HAS_LONG_LONG)
- int field_width;
- int num_len;
- int num_pad_chars;
- char *pad_char; /* string with one character */
- int pad_on_left;
- char *parse_ptr;
- char temp_nbr_buf[RESULT_BUF_LEN];
-#endif
-
-#ifndef CC_HAS_LONG_LONG
- /* If there is no long long, then LONGEST should be just long and we
- can use local_hex_string_custom
- */
- return local_hex_string_custom ((unsigned long) num, width);
-#endif
-
-#if defined (PRINTF_HAS_LONG_LONG)
- /* Just use printf. */
- strcpy (format, local_hex_format_prefix ()); /* 0x */
- strcat (format, "%");
- strcat (format, width); /* e.g. "08l" */
- strcat (format, "l"); /* need "ll" for long long */
- strcat (format, local_hex_format_specifier ()); /* "x" */
- strcat (format, local_hex_format_suffix ()); /* "" */
- sprintf (res2, format, num);
- return res2;
-#else /* !defined (PRINTF_HAS_LONG_LONG) */
- /* Use strcat_address_numeric to print the number into a string, then
- build the result string from local_hex_format_prefix, padding and
- the hex representation as indicated by "width". */
-
- temp_nbr_buf[0] = 0;
- /* With use_local == 0, we don't get the leading "0x" prefix. */
- /* MERGEBUG ?? As a quick fix I am replacing this call to
- strcat_address_numeric with sprintf
- strcat_address_numeric(num, 0, temp_nbr_buf, RESULT_BUF_LEN);
- */
-
- {
- long long ll = num;
- sprintf (temp_nbr_buf, "%llx", ll);
- }
- /* parse width */
- parse_ptr = width;
- pad_on_left = 1;
- pad_char = " ";
- if (*parse_ptr == '-')
+ static const char **language_names;
+
+ /* 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)
{
- parse_ptr++;
- pad_on_left = 0;
+ /* Already handled above. */
+ if (lang->la_language == language_auto
+ || lang->la_language == language_unknown)
+ continue;
+ *language_names_p++ = lang->la_name;
}
- if (*parse_ptr == '0')
+ *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. */
+ string_file doc;
+
+ doc.printf (_("Set the current source language.\n"
+ "The currently understood settings are:\n\nlocal or "
+ "auto Automatic setting based on source file"));
+
+ for (const auto &lang : languages)
{
- parse_ptr++;
- if (pad_on_left)
- pad_char = "0"; /* If padding is on the right, it is blank */
+ /* Already dealt with these above. */
+ 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. */
+ /* 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);
}
- field_width = atoi (parse_ptr);
- num_len = strlen (temp_nbr_buf);
- num_pad_chars = field_width - strlen (temp_nbr_buf); /* possibly negative */
- if (strlen (local_hex_format_prefix ()) + num_len + num_pad_chars
- < RESULT_BUF_LEN) /* paranoia */
- internal_error ("longest_local_hex_string_custom: insufficient space to store result");
+ add_setshow_enum_cmd ("language", class_support,
+ language_names,
+ &language,
+ doc.c_str (),
+ _("Show the current source language."),
+ NULL, set_language_command,
+ show_language_command,
+ &setlist, &showlist);
+}
- strcpy (res2, local_hex_format_prefix ());
- if (pad_on_left)
- {
- while (num_pad_chars > 0)
- {
- strcat (res2, pad_char);
- num_pad_chars--;
- }
- }
- strcat (res2, temp_nbr_buf);
- if (!pad_on_left)
+/* Iterate through all registered languages looking for and calling
+ any non-NULL struct language_defn.skip_trampoline() functions.
+ Return the result from the first that returns non-zero, or 0 if all
+ `fail'. */
+CORE_ADDR
+skip_language_trampoline (struct frame_info *frame, CORE_ADDR pc)
+{
+ for (const auto &lang : languages)
{
- while (num_pad_chars > 0)
+ if (lang->skip_trampoline != NULL)
{
- strcat (res2, pad_char);
- num_pad_chars--;
+ CORE_ADDR real_pc = lang->skip_trampoline (frame, pc);
+
+ if (real_pc)
+ return real_pc;
}
}
- return res2;
-#endif
-} /* longest_local_hex_string_custom */
-
-/* Returns the appropriate printf format for octal
- numbers. */
-char *
-local_octal_format_custom (pre)
- char *pre;
-{
- static char form[50];
-
- strcpy (form, local_octal_format_prefix ());
- strcat (form, "%");
- strcat (form, pre);
- strcat (form, local_octal_format_specifier ());
- strcat (form, local_octal_format_suffix ());
- return form;
+ return 0;
}
-/* Returns the appropriate printf format for decimal numbers. */
+/* Return demangled language symbol, or NULL.
+ FIXME: Options are only useful for certain languages and ignored
+ by others, so it would be better to remove them here and have a
+ more flexible demangler for the languages that need it.
+ FIXME: Sometimes the demangler is invoked when we don't know the
+ language, so we can't use this everywhere. */
char *
-local_decimal_format_custom (pre)
- char *pre;
+language_demangle (const struct language_defn *current_language,
+ const char *mangled, int options)
{
- static char form[50];
-
- strcpy (form, local_decimal_format_prefix ());
- strcat (form, "%");
- strcat (form, pre);
- strcat (form, local_decimal_format_specifier ());
- strcat (form, local_decimal_format_suffix ());
- return form;
+ if (current_language != NULL && current_language->la_demangle)
+ return current_language->la_demangle (mangled, options);
+ return NULL;
}
-\f
-#if 0
-/* This page contains functions that are used in type/range checking.
- They all return zero if the type/range check fails.
-
- It is hoped that these will make extending GDB to parse different
- languages a little easier. These are primarily used in eval.c when
- evaluating expressions and making sure that their types are correct.
- Instead of having a mess of conjucted/disjuncted expressions in an "if",
- the ideas of type can be wrapped up in the following functions.
-
- Note that some of them are not currently dependent upon which language
- is currently being parsed. For example, floats are the same in
- C and Modula-2 (ie. the only floating point type has TYPE_CODE of
- TYPE_CODE_FLT), while booleans are different. */
-
-/* Returns non-zero if its argument is a simple type. This is the same for
- both Modula-2 and for C. In the C case, TYPE_CODE_CHAR will never occur,
- and thus will never cause the failure of the test. */
-int
-simple_type (type)
- struct type *type;
-{
- CHECK_TYPEDEF (type);
- switch (TYPE_CODE (type))
- {
- case TYPE_CODE_INT:
- case TYPE_CODE_CHAR:
- case TYPE_CODE_ENUM:
- case TYPE_CODE_FLT:
- case TYPE_CODE_RANGE:
- case TYPE_CODE_BOOL:
- return 1;
- default:
- return 0;
- }
-}
+/* See language.h. */
-/* Returns non-zero if its argument is of an ordered type.
- An ordered type is one in which the elements can be tested for the
- properties of "greater than", "less than", etc, or for which the
- operations "increment" or "decrement" make sense. */
int
-ordered_type (type)
- struct type *type;
+language_sniff_from_mangled_name (const struct language_defn *lang,
+ const char *mangled, char **demangled)
{
- CHECK_TYPEDEF (type);
- switch (TYPE_CODE (type))
- {
- case TYPE_CODE_INT:
- case TYPE_CODE_CHAR:
- case TYPE_CODE_ENUM:
- case TYPE_CODE_FLT:
- case TYPE_CODE_RANGE:
- return 1;
+ gdb_assert (lang != NULL);
- default:
+ if (lang->la_sniff_from_mangled_name == NULL)
+ {
+ *demangled = NULL;
return 0;
}
+
+ return lang->la_sniff_from_mangled_name (mangled, demangled);
}
-/* Returns non-zero if the two types are the same */
-int
-same_type (arg1, arg2)
- struct type *arg1, *arg2;
+/* Return class name from physname or NULL. */
+char *
+language_class_name_from_physname (const struct language_defn *lang,
+ const char *physname)
{
- CHECK_TYPEDEF (type);
- if (structured_type (arg1) ? !structured_type (arg2) : structured_type (arg2))
- /* One is structured and one isn't */
- return 0;
- else if (structured_type (arg1) && structured_type (arg2))
- return arg1 == arg2;
- else if (numeric_type (arg1) && numeric_type (arg2))
- return (TYPE_CODE (arg2) == TYPE_CODE (arg1)) &&
- (TYPE_UNSIGNED (arg1) == TYPE_UNSIGNED (arg2))
- ? 1 : 0;
- else
- return arg1 == arg2;
+ if (lang != NULL && lang->la_class_name_from_physname)
+ return lang->la_class_name_from_physname (physname);
+ return NULL;
}
-/* Returns non-zero if the type is integral */
-int
-integral_type (type)
- struct type *type;
+/* 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)
{
- CHECK_TYPEDEF (type);
- switch (current_language->la_language)
- {
- case language_c:
- case language_cplus:
- return (TYPE_CODE (type) != TYPE_CODE_INT) &&
- (TYPE_CODE (type) != TYPE_CODE_ENUM) ? 0 : 1;
- case language_m2:
- return TYPE_CODE (type) != TYPE_CODE_INT ? 0 : 1;
- case language_chill:
- error ("Missing Chill support in function integral_type."); /*FIXME */
- default:
- error ("Language not supported.");
- }
+ return current_language->la_pass_by_reference (type);
}
-/* Returns non-zero if the value is numeric */
-int
-numeric_type (type)
- struct type *type;
+/* 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)
{
- CHECK_TYPEDEF (type);
- switch (TYPE_CODE (type))
- {
- case TYPE_CODE_INT:
- case TYPE_CODE_FLT:
- return 1;
+ return {};
+}
- default:
- return 0;
- }
+/* Return the default string containing the list of characters
+ delimiting words. This is a reasonable default value that
+ most languages should be able to use. */
+
+const char *
+default_word_break_characters (void)
+{
+ return " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-";
}
-/* Returns non-zero if the value is a character type */
-int
-character_type (type)
- struct type *type;
+/* Print the index of array elements using the C99 syntax. */
+
+void
+default_print_array_index (struct value *index_value, struct ui_file *stream,
+ const struct value_print_options *options)
{
- CHECK_TYPEDEF (type);
- switch (current_language->la_language)
- {
- case language_chill:
- case language_m2:
- return TYPE_CODE (type) != TYPE_CODE_CHAR ? 0 : 1;
-
- case language_c:
- case language_cplus:
- return (TYPE_CODE (type) == TYPE_CODE_INT) &&
- TYPE_LENGTH (type) == sizeof (char)
- ? 1 : 0;
- default:
- return (0);
- }
+ fprintf_filtered (stream, "[");
+ LA_VALUE_PRINT (index_value, stream, options);
+ fprintf_filtered (stream, "] = ");
}
-/* Returns non-zero if the value is a string type */
-int
-string_type (type)
- struct type *type;
+/* 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)
{
- CHECK_TYPEDEF (type);
- switch (current_language->la_language)
+ 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)
{
- case language_chill:
- case language_m2:
- return TYPE_CODE (type) != TYPE_CODE_STRING ? 0 : 1;
-
- case language_c:
- case language_cplus:
- /* C does not have distinct string type. */
- return (0);
- default:
- return (0);
+ if (comp_match_res != NULL)
+ comp_match_res->set_match (symbol_search_name);
+ return true;
}
+ else
+ return false;
}
-/* Returns non-zero if the value is a boolean type */
-int
-boolean_type (type)
- struct type *type;
+/* See language.h. */
+
+bool
+default_is_string_type_p (struct type *type)
{
- CHECK_TYPEDEF (type);
- if (TYPE_CODE (type) == TYPE_CODE_BOOL)
- return 1;
- switch (current_language->la_language)
+ type = check_typedef (type);
+ while (TYPE_CODE (type) == TYPE_CODE_REF)
{
- case language_c:
- case language_cplus:
- /* Might be more cleanly handled by having a TYPE_CODE_INT_NOT_BOOL
- for CHILL and such languages, or a TYPE_CODE_INT_OR_BOOL for C. */
- if (TYPE_CODE (type) == TYPE_CODE_INT)
- return 1;
- default:
- break;
+ type = TYPE_TARGET_TYPE (type);
+ type = check_typedef (type);
}
- return 0;
+ return (TYPE_CODE (type) == TYPE_CODE_STRING);
}
-/* Returns non-zero if the value is a floating-point type */
-int
-float_type (type)
- struct type *type;
-{
- CHECK_TYPEDEF (type);
- return TYPE_CODE (type) == TYPE_CODE_FLT;
-}
+/* See language.h. */
-/* Returns non-zero if the value is a pointer type */
-int
-pointer_type (type)
- struct type *type;
+symbol_name_matcher_ftype *
+get_symbol_name_matcher (const language_defn *lang,
+ const lookup_name_info &lookup_name)
{
- return TYPE_CODE (type) == TYPE_CODE_PTR ||
- TYPE_CODE (type) == TYPE_CODE_REF;
-}
-
-/* Returns non-zero if the value is a structured type */
-int
-structured_type (type)
- struct type *type;
-{
- CHECK_TYPEDEF (type);
- switch (current_language->la_language)
- {
- case language_c:
- case language_cplus:
- return (TYPE_CODE (type) == TYPE_CODE_STRUCT) ||
- (TYPE_CODE (type) == TYPE_CODE_UNION) ||
- (TYPE_CODE (type) == TYPE_CODE_ARRAY);
- case language_m2:
- return (TYPE_CODE (type) == TYPE_CODE_STRUCT) ||
- (TYPE_CODE (type) == TYPE_CODE_SET) ||
- (TYPE_CODE (type) == TYPE_CODE_ARRAY);
- case language_chill:
- error ("Missing Chill support in function structured_type."); /*FIXME */
- default:
- return (0);
- }
-}
-#endif
-\f
-struct type *
-lang_bool_type ()
-{
- struct symbol *sym;
- struct type *type;
- switch (current_language->la_language)
- {
- case language_chill:
- return builtin_type_chill_bool;
- case language_fortran:
- sym = lookup_symbol ("logical", NULL, VAR_NAMESPACE, NULL, NULL);
- if (sym)
- {
- type = SYMBOL_TYPE (sym);
- if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
- return type;
- }
- return builtin_type_f_logical_s2;
- case language_cplus:
- sym = lookup_symbol ("bool", NULL, VAR_NAMESPACE, NULL, NULL);
- if (sym)
- {
- type = SYMBOL_TYPE (sym);
- if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
- return type;
- }
- return builtin_type_bool;
- default:
- return builtin_type_int;
- }
-}
-\f
-/* This page contains functions that return info about
- (struct value) values used in GDB. */
-
-/* Returns non-zero if the value VAL represents a true value. */
-int
-value_true (val)
- value_ptr val;
-{
- /* It is possible that we should have some sort of error if a non-boolean
- value is used in this context. Possibly dependent on some kind of
- "boolean-checking" option like range checking. But it should probably
- not depend on the language except insofar as is necessary to identify
- a "boolean" value (i.e. in C using a float, pointer, etc., as a boolean
- should be an error, probably). */
- return !value_logical_not (val);
-}
-\f
-/* Returns non-zero if the operator OP is defined on
- the values ARG1 and ARG2. */
-
-#if 0 /* Currently unused */
-
-void
-binop_type_check (arg1, arg2, op)
- value_ptr arg1, arg2;
- int op;
-{
- struct type *t1, *t2;
-
- /* If we're not checking types, always return success. */
- if (!STRICT_TYPE)
- return;
-
- t1 = VALUE_TYPE (arg1);
- if (arg2 != NULL)
- t2 = VALUE_TYPE (arg2);
- else
- t2 = NULL;
-
- switch (op)
- {
- case BINOP_ADD:
- case BINOP_SUB:
- if ((numeric_type (t1) && pointer_type (t2)) ||
- (pointer_type (t1) && numeric_type (t2)))
- {
- warning ("combining pointer and integer.\n");
- break;
- }
- case BINOP_MUL:
- case BINOP_LSH:
- case BINOP_RSH:
- if (!numeric_type (t1) || !numeric_type (t2))
- type_op_error ("Arguments to %s must be numbers.", op);
- else if (!same_type (t1, t2))
- type_op_error ("Arguments to %s must be of the same type.", op);
- break;
-
- case BINOP_LOGICAL_AND:
- case BINOP_LOGICAL_OR:
- if (!boolean_type (t1) || !boolean_type (t2))
- type_op_error ("Arguments to %s must be of boolean type.", op);
- break;
-
- case BINOP_EQUAL:
- if ((pointer_type (t1) && !(pointer_type (t2) || integral_type (t2))) ||
- (pointer_type (t2) && !(pointer_type (t1) || integral_type (t1))))
- type_op_error ("A pointer can only be compared to an integer or pointer.", op);
- else if ((pointer_type (t1) && integral_type (t2)) ||
- (integral_type (t1) && pointer_type (t2)))
- {
- warning ("combining integer and pointer.\n");
- break;
- }
- else if (!simple_type (t1) || !simple_type (t2))
- type_op_error ("Arguments to %s must be of simple type.", op);
- else if (!same_type (t1, t2))
- type_op_error ("Arguments to %s must be of the same type.", op);
- break;
-
- case BINOP_REM:
- case BINOP_MOD:
- if (!integral_type (t1) || !integral_type (t2))
- type_op_error ("Arguments to %s must be of integral type.", op);
- break;
-
- case BINOP_LESS:
- case BINOP_GTR:
- case BINOP_LEQ:
- case BINOP_GEQ:
- if (!ordered_type (t1) || !ordered_type (t2))
- type_op_error ("Arguments to %s must be of ordered type.", op);
- else if (!same_type (t1, t2))
- type_op_error ("Arguments to %s must be of the same type.", op);
- break;
-
- case BINOP_ASSIGN:
- if (pointer_type (t1) && !integral_type (t2))
- type_op_error ("A pointer can only be assigned an integer.", op);
- else if (pointer_type (t1) && integral_type (t2))
- {
- warning ("combining integer and pointer.");
- break;
- }
- else if (!simple_type (t1) || !simple_type (t2))
- type_op_error ("Arguments to %s must be of simple type.", op);
- else if (!same_type (t1, t2))
- type_op_error ("Arguments to %s must be of the same type.", op);
- break;
-
- case BINOP_CONCAT:
- /* FIXME: Needs to handle bitstrings as well. */
- if (!(string_type (t1) || character_type (t1) || integral_type (t1))
- || !(string_type (t2) || character_type (t2) || integral_type (t2)))
- type_op_error ("Arguments to %s must be strings or characters.", op);
- break;
-
- /* Unary checks -- arg2 is null */
-
- case UNOP_LOGICAL_NOT:
- if (!boolean_type (t1))
- type_op_error ("Argument to %s must be of boolean type.", op);
- break;
-
- case UNOP_PLUS:
- case UNOP_NEG:
- if (!numeric_type (t1))
- type_op_error ("Argument to %s must be of numeric type.", op);
- break;
-
- case UNOP_IND:
- if (integral_type (t1))
- {
- warning ("combining pointer and integer.\n");
- break;
- }
- else if (!pointer_type (t1))
- type_op_error ("Argument to %s must be a pointer.", op);
- break;
-
- case UNOP_PREINCREMENT:
- case UNOP_POSTINCREMENT:
- case UNOP_PREDECREMENT:
- case UNOP_POSTDECREMENT:
- if (!ordered_type (t1))
- type_op_error ("Argument to %s must be of an ordered type.", op);
- break;
-
- default:
- /* Ok. The following operators have different meanings in
- different languages. */
- switch (current_language->la_language)
- {
-#ifdef _LANG_c
- case language_c:
- case language_cplus:
- switch (op)
- {
- case BINOP_DIV:
- if (!numeric_type (t1) || !numeric_type (t2))
- type_op_error ("Arguments to %s must be numbers.", op);
- break;
- }
- break;
-#endif
-
-#ifdef _LANG_m2
- case language_m2:
- switch (op)
- {
- case BINOP_DIV:
- if (!float_type (t1) || !float_type (t2))
- type_op_error ("Arguments to %s must be floating point numbers.", op);
- break;
- case BINOP_INTDIV:
- if (!integral_type (t1) || !integral_type (t2))
- type_op_error ("Arguments to %s must be of integral type.", op);
- break;
- }
-#endif
-
-#ifdef _LANG_chill
- case language_chill:
- error ("Missing Chill support in function binop_type_check."); /*FIXME */
-#endif
-
- }
- }
-}
-
-#endif /* 0 */
-\f
-
-/* This page contains functions for the printing out of
- error messages that occur during type- and range-
- checking. */
-
-/* Prints the format string FMT with the operator as a string
- corresponding to the opcode OP. If FATAL is non-zero, then
- this is an error and error () is called. Otherwise, it is
- a warning and printf() is called. */
-void
-op_error (fmt, op, fatal)
- char *fmt;
- enum exp_opcode op;
- int fatal;
-{
- if (fatal)
- error (fmt, op_string (op));
- else
- {
- warning (fmt, op_string (op));
- }
-}
-
-/* These are called when a language fails a type- or range-check.
- The first argument should be a printf()-style format string, and
- the rest of the arguments should be its arguments. If
- [type|range]_check is [type|range]_check_on, then return_to_top_level()
- is called in the style of error (). Otherwise, the message is prefixed
- by the value of warning_pre_print and we do not return to the top level. */
-
-void
-type_error (char *string,...)
-{
- va_list args;
- va_start (args, string);
-
- if (type_check == type_check_warn)
- fprintf_filtered (gdb_stderr, warning_pre_print);
- else
- error_begin ();
-
- vfprintf_filtered (gdb_stderr, string, args);
- fprintf_filtered (gdb_stderr, "\n");
- va_end (args);
- if (type_check == type_check_on)
- return_to_top_level (RETURN_ERROR);
-}
-
-void
-range_error (char *string,...)
-{
- va_list args;
- va_start (args, string);
-
- if (range_check == range_check_warn)
- fprintf_filtered (gdb_stderr, warning_pre_print);
- else
- error_begin ();
-
- vfprintf_filtered (gdb_stderr, string, args);
- fprintf_filtered (gdb_stderr, "\n");
- va_end (args);
- if (range_check == range_check_on)
- return_to_top_level (RETURN_ERROR);
-}
-\f
-
-/* This page contains miscellaneous functions */
-
-/* Return the language enum for a given language string. */
-
-enum language
-language_enum (str)
- char *str;
-{
- int i;
-
- for (i = 0; i < languages_size; i++)
- if (STREQ (languages[i]->la_name, str))
- return languages[i]->la_language;
-
- return language_unknown;
-}
-
-/* Return the language struct for a given language enum. */
-
-const struct language_defn *
-language_def (lang)
- enum language lang;
-{
- int i;
-
- for (i = 0; i < languages_size; i++)
- {
- if (languages[i]->la_language == lang)
- {
- return languages[i];
- }
- }
- return NULL;
-}
-
-/* Return the language as a string */
-char *
-language_str (lang)
- 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";
-}
-
-static void
-set_check (ignore, from_tty)
- char *ignore;
- int from_tty;
-{
- printf_unfiltered (
- "\"set check\" must be followed by the name of a check subcommand.\n");
- help_list (setchecklist, "set check ", -1, gdb_stdout);
-}
-
-static void
-show_check (ignore, from_tty)
- char *ignore;
- int from_tty;
-{
- cmd_show_list (showchecklist, from_tty, "");
-}
-\f
-/* Add a language to the set of known languages. */
-
-void
-add_language (lang)
- const struct language_defn *lang;
-{
- if (lang->la_magic != LANG_MAGIC)
- {
- fprintf_unfiltered (gdb_stderr, "Magic number of %s language struct wrong\n",
- lang->la_name);
- abort ();
- }
-
- if (!languages)
- {
- languages_allocsize = DEFAULT_ALLOCSIZE;
- languages = (const struct language_defn **) xmalloc
- (languages_allocsize * sizeof (*languages));
- }
- if (languages_size >= languages_allocsize)
- {
- languages_allocsize *= 2;
- languages = (const struct language_defn **) xrealloc ((char *) languages,
- languages_allocsize * sizeof (*languages));
- }
- languages[languages_size++] = lang;
+ /* 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. */
static int
-unk_lang_parser ()
+unk_lang_parser (struct parser_state *ps)
{
return 1;
}
static void
-unk_lang_error (msg)
- char *msg;
+unk_lang_emit_char (int c, struct type *type, struct ui_file *stream,
+ int quoter)
{
- error ("Attempted to parse an expression with unknown language");
+ error (_("internal error - unimplemented "
+ "function unk_lang_emit_char called."));
}
static void
-unk_lang_emit_char (c, stream, quoter)
- register int c;
- struct ui_file *stream;
- int quoter;
+unk_lang_printchar (int c, struct type *type, struct ui_file *stream)
{
- error ("internal error - unimplemented function unk_lang_emit_char called.");
+ error (_("internal error - unimplemented "
+ "function unk_lang_printchar called."));
}
static void
-unk_lang_printchar (c, stream)
- register int c;
- struct ui_file *stream;
+unk_lang_printstr (struct ui_file *stream, struct type *type,
+ const gdb_byte *string, unsigned int length,
+ const char *encoding, int force_ellipses,
+ const struct value_print_options *options)
{
- error ("internal error - unimplemented function unk_lang_printchar called.");
+ error (_("internal error - unimplemented "
+ "function unk_lang_printstr called."));
}
static void
-unk_lang_printstr (stream, string, length, width, force_ellipses)
- struct ui_file *stream;
- char *string;
- unsigned int length;
- int width;
- int force_ellipses;
+unk_lang_print_type (struct type *type, const char *varstring,
+ struct ui_file *stream, int show, int level,
+ const struct type_print_options *flags)
{
- error ("internal error - unimplemented function unk_lang_printstr called.");
+ error (_("internal error - unimplemented "
+ "function unk_lang_print_type called."));
}
-static struct type *
-unk_lang_create_fundamental_type (objfile, typeid)
- struct objfile *objfile;
- int typeid;
+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)
{
- error ("internal error - unimplemented function unk_lang_create_fundamental_type called.");
+ error (_("internal error - unimplemented "
+ "function unk_lang_val_print called."));
}
static void
-unk_lang_print_type (type, varstring, stream, show, level)
- struct type *type;
- char *varstring;
- struct ui_file *stream;
- int show;
- int level;
+unk_lang_value_print (struct value *val, struct ui_file *stream,
+ const struct value_print_options *options)
{
- error ("internal error - unimplemented function unk_lang_print_type called.");
+ error (_("internal error - unimplemented "
+ "function unk_lang_value_print called."));
}
-static int
-unk_lang_val_print (type, valaddr, embedded_offset, address, stream, format, deref_ref,
- recurse, pretty)
- struct type *type;
- char *valaddr;
- int embedded_offset;
- CORE_ADDR address;
- struct ui_file *stream;
- int format;
- int deref_ref;
- int recurse;
- enum val_prettyprint pretty;
+static CORE_ADDR unk_lang_trampoline (struct frame_info *frame, CORE_ADDR pc)
{
- error ("internal error - unimplemented function unk_lang_val_print called.");
+ return 0;
}
-static int
-unk_lang_value_print (val, stream, format, pretty)
- value_ptr val;
- struct ui_file *stream;
- int format;
- enum val_prettyprint pretty;
+/* Unknown languages just use the cplus demangler. */
+static char *unk_lang_demangle (const char *mangled, int options)
{
- error ("internal error - unimplemented function unk_lang_value_print called.");
+ return gdb_demangle (mangled, options);
}
-static struct type **CONST_PTR (unknown_builtin_types[]) =
+static char *unk_lang_class_name (const char *mangled)
{
- 0
-};
+ return NULL;
+}
+
static const struct op_print unk_op_print_tab[] =
{
{NULL, OP_NULL, PREC_NULL, 0}
};
+static void
+unknown_language_arch_info (struct gdbarch *gdbarch,
+ struct language_arch_info *lai)
+{
+ lai->string_char_type = builtin_type (gdbarch)->builtin_char;
+ lai->bool_type_default = builtin_type (gdbarch)->builtin_int;
+ lai->primitive_type_vector = GDBARCH_OBSTACK_CALLOC (gdbarch, 1,
+ struct type *);
+}
+
const struct language_defn unknown_language_defn =
{
"unknown",
+ "Unknown",
language_unknown,
- &unknown_builtin_types[0],
range_check_off,
- type_check_off,
+ case_sensitive_on,
+ array_row_major,
+ macro_expansion_no,
+ NULL,
+ &exp_descriptor_standard,
unk_lang_parser,
- unk_lang_error,
- evaluate_subexp_standard,
+ null_post_parser,
unk_lang_printchar, /* Print character constant */
unk_lang_printstr,
unk_lang_emit_char,
- unk_lang_create_fundamental_type,
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 */
- {"", "", "", ""}, /* Binary format info */
- {"0%lo", "0", "o", ""}, /* Octal format info */
- {"%ld", "", "d", ""}, /* Decimal format info */
- {"0x%lx", "0x", "x", ""}, /* Hex format info */
+ 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 */
- &builtin_type_char, /* Type of string elements */
- LANG_MAGIC
+ default_word_break_characters,
+ default_collect_symbol_completion_matches,
+ unknown_language_arch_info, /* la_language_arch_info. */
+ default_print_array_index,
+ default_pass_by_reference,
+ c_watch_location_expression,
+ NULL, /* la_get_symbol_name_matcher */
+ iterate_over_symbols,
+ default_search_name_hash,
+ &default_varobj_ops,
+ NULL,
+ NULL,
+ default_is_string_type_p,
+ "{...}" /* la_struct_too_deep_ellipsis */
};
-/* These two structs define fake entries for the "local" and "auto" options. */
+/* These two structs define fake entries for the "local" and "auto"
+ options. */
const struct language_defn auto_language_defn =
{
"auto",
+ "Auto",
language_auto,
- &unknown_builtin_types[0],
range_check_off,
- type_check_off,
+ case_sensitive_on,
+ array_row_major,
+ macro_expansion_no,
+ NULL,
+ &exp_descriptor_standard,
unk_lang_parser,
- unk_lang_error,
- evaluate_subexp_standard,
+ null_post_parser,
unk_lang_printchar, /* Print character constant */
unk_lang_printstr,
unk_lang_emit_char,
- unk_lang_create_fundamental_type,
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 */
- {"", "", "", ""}, /* Binary format info */
- {"0%lo", "0", "o", ""}, /* Octal format info */
- {"%ld", "", "d", ""}, /* Decimal format info */
- {"0x%lx", "0x", "x", ""}, /* Hex format info */
+ 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 */
+ 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 */
- &builtin_type_char, /* Type of string elements */
- LANG_MAGIC
+ default_word_break_characters,
+ default_collect_symbol_completion_matches,
+ unknown_language_arch_info, /* la_language_arch_info. */
+ default_print_array_index,
+ default_pass_by_reference,
+ c_watch_location_expression,
+ NULL, /* la_get_symbol_name_matcher */
+ iterate_over_symbols,
+ default_search_name_hash,
+ &default_varobj_ops,
+ NULL,
+ NULL,
+ default_is_string_type_p,
+ "{...}" /* la_struct_too_deep_ellipsis */
};
-const struct language_defn local_language_defn =
+\f
+/* Per-architecture language information. */
+
+static struct gdbarch_data *language_gdbarch_data;
+
+struct language_gdbarch
{
- "local",
- language_auto,
- &unknown_builtin_types[0],
- range_check_off,
- type_check_off,
- unk_lang_parser,
- unk_lang_error,
- evaluate_subexp_standard,
- unk_lang_printchar, /* Print character constant */
- unk_lang_printstr,
- unk_lang_emit_char,
- unk_lang_create_fundamental_type,
- unk_lang_print_type, /* Print a type using appropriate syntax */
- unk_lang_val_print, /* Print a value using appropriate syntax */
- unk_lang_value_print, /* Print a top-level value */
- {"", "", "", ""}, /* Binary format info */
- {"0%lo", "0", "o", ""}, /* Octal format info */
- {"%ld", "", "d", ""}, /* Decimal format info */
- {"0x%lx", "0x", "x", ""}, /* Hex format info */
- unk_op_print_tab, /* expression operators for printing */
- 1, /* c-style arrays */
- 0, /* String lower bound */
- &builtin_type_char, /* Type of string elements */
- LANG_MAGIC
+ /* A vector of per-language per-architecture info. Indexed by "enum
+ language". */
+ struct language_arch_info arch_info[nr_languages];
};
-\f
-/* Initialize the language routines */
+
+static void *
+language_gdbarch_post_init (struct gdbarch *gdbarch)
+{
+ struct language_gdbarch *l;
+
+ l = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct language_gdbarch);
+ 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;
+}
+
+struct type *
+language_string_char_type (const struct language_defn *la,
+ struct gdbarch *gdbarch)
+{
+ struct language_gdbarch *ld
+ = (struct language_gdbarch *) gdbarch_data (gdbarch, language_gdbarch_data);
+
+ return ld->arch_info[la->la_language].string_char_type;
+}
+
+struct type *
+language_bool_type (const struct language_defn *la,
+ struct gdbarch *gdbarch)
+{
+ 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).symbol;
+ if (sym)
+ {
+ struct type *type = SYMBOL_TYPE (sym);
+
+ if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
+ return type;
+ }
+ }
+
+ 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 (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 symbol *symbol;
+ struct gdbarch *gdbarch;
+
+ gdb_assert (!TYPE_OBJFILE_OWNED (type));
+
+ gdbarch = TYPE_OWNER (type).gdbarch;
+ symbol = new (gdbarch_obstack (gdbarch)) struct symbol ();
+
+ 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_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_as_symbol"
+ " (%s, %s, %s)",
+ la->la_name, host_address_to_string (gdbarch), name);
+ }
+
+ typep = language_lookup_primitive_type_1 (lai, name);
+ if (typep == NULL)
+ {
+ 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, " = %s\n", host_address_to_string (sym));
+ return sym;
+}
+
+/* Initialize the language routines. */
void
-_initialize_language ()
+_initialize_language (void)
{
- struct cmd_list_element *set, *show;
+ static const char *const type_or_range_names[]
+ = { "on", "off", "warn", "auto", NULL };
+
+ static const char *const case_sensitive_names[]
+ = { "on", "off", "auto", NULL };
- /* GDB commands for language specific stuff */
+ language_gdbarch_data
+ = gdbarch_data_register_post_init (language_gdbarch_post_init);
- set = add_set_cmd ("language", class_support, var_string_noescape,
- (char *) &language,
- "Set the current source language.",
- &setlist);
- show = add_show_from_set (set, &showlist);
- set->function.cfunc = set_language_command;
- show->function.cfunc = show_language_command;
+ /* GDB commands for language specific stuff. */
add_prefix_cmd ("check", no_class, set_check,
- "Set the status of the type/range checker",
+ _("Set the status of the type/range checker."),
&setchecklist, "set check ", 0, &setlist);
add_alias_cmd ("c", "check", no_class, 1, &setlist);
add_alias_cmd ("ch", "check", no_class, 1, &setlist);
add_prefix_cmd ("check", no_class, show_check,
- "Show the status of the type/range checker",
+ _("Show the status of the type/range checker."),
&showchecklist, "show check ", 0, &showlist);
add_alias_cmd ("c", "check", no_class, 1, &showlist);
add_alias_cmd ("ch", "check", no_class, 1, &showlist);
- set = add_set_cmd ("type", class_support, var_string_noescape,
- (char *) &type,
- "Set type checking. (on/warn/off/auto)",
- &setchecklist);
- show = add_show_from_set (set, &showchecklist);
- set->function.cfunc = set_type_command;
- show->function.cfunc = show_type_command;
-
- set = add_set_cmd ("range", class_support, var_string_noescape,
- (char *) &range,
- "Set range checking. (on/warn/off/auto)",
- &setchecklist);
- show = add_show_from_set (set, &showchecklist);
- set->function.cfunc = set_range_command;
- show->function.cfunc = show_range_command;
-
- add_language (&unknown_language_defn);
- add_language (&local_language_defn);
- add_language (&auto_language_defn);
-
- language = savestring ("auto", strlen ("auto"));
- set_language_command (language, 0);
-
- type = savestring ("auto", strlen ("auto"));
- set_type_command (NULL, 0);
-
- range = savestring ("auto", strlen ("auto"));
- set_range_command (NULL, 0);
+ 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)."),
+ 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)."), _("\
+For Fortran the default is off; for other languages the default is on."),
+ set_case_command,
+ show_case_command,
+ &setlist, &showlist);
+
+ add_set_language_command ();
+
+ language = "auto";
+ range = "auto";
+ case_sensitive = "auto";
+
+ /* Have the above take effect. */
+ set_language (language_auto);
}
projects / deliverable / binutils-gdb.git / blobdiff