199b2450f6
Change all references to stdout/stderr to gdb_stdout/gdb_stderr. Replace all calls to stdio output functions with calls to corresponding _unfiltered functions (`fprintf_unfiltered') Replaced calls to fopen for output to gdb_fopen. Added sufficient goo to utils.c and defs.h to make the above work. The net effect is that stdio output functions are only directly used in utils.c. Elsewhere, the _unfiltered and _filtered functions and GDB_FILE type are used. In the near future, GDB_FILE will stop being equivalant to FILE. The semantics of some commands has changed in a very subtle way: called in the right context, they may cause new occurences of prompt_for_continue() behavior. The testsuite doesn't notice anything like this, though. Please respect this change by not reintroducing stdio output dependencies in the main body of gdb code. All output from commands should go to a GDB_FILE. Target-specific code can still use stdio directly to communicate with targets.
1332 lines
34 KiB
C
1332 lines
34 KiB
C
/* Multiple source language support for GDB.
|
||
Copyright 1991, 1992 Free Software Foundation, Inc.
|
||
Contributed by the Department of Computer Science at the State University
|
||
of New York at Buffalo.
|
||
|
||
This file is part of GDB.
|
||
|
||
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
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||
|
||
/* 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. */
|
||
|
||
/* FIXME: Most of these would be better organized as macros which
|
||
return data out of a "language-specific" struct pointer that is set
|
||
whenever the working language changes. That would be a lot faster. */
|
||
|
||
#include "defs.h"
|
||
#include <string.h>
|
||
#include <varargs.h>
|
||
|
||
#include "symtab.h"
|
||
#include "gdbtypes.h"
|
||
#include "value.h"
|
||
#include "gdbcmd.h"
|
||
#include "frame.h"
|
||
#include "expression.h"
|
||
#include "language.h"
|
||
#include "target.h"
|
||
#include "parser-defs.h"
|
||
|
||
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));
|
||
|
||
/* 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
|
||
on the default language at startup, and then again based on the
|
||
language of the first source file. */
|
||
|
||
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;
|
||
|
||
/* 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;
|
||
|
||
/* The language that the user expects to be typing in (the language
|
||
of main(), or the last language we notified them about, or C). */
|
||
|
||
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. */
|
||
|
||
static char *language;
|
||
static char *type;
|
||
static char *range;
|
||
|
||
/* 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.";
|
||
|
||
|
||
/* This page contains the functions corresponding to GDB commands
|
||
and their helpers. */
|
||
|
||
/* Show command. Display a warning if the language set
|
||
does not match the frame. */
|
||
static void
|
||
show_language_command (ignore, from_tty)
|
||
char *ignore;
|
||
int from_tty;
|
||
{
|
||
enum language flang; /* The language of the current frame */
|
||
|
||
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);
|
||
}
|
||
|
||
/* Set command. Change the current working language. */
|
||
static void
|
||
set_language_command (ignore, from_tty)
|
||
char *ignore;
|
||
int from_tty;
|
||
{
|
||
int i;
|
||
enum language flang;
|
||
char *err_lang;
|
||
|
||
/* FIXME -- do this from the list, with HELP. */
|
||
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");
|
||
printf_unfiltered ("c Use the C language\n");
|
||
printf_unfiltered ("c++ Use the C++ language\n");
|
||
printf_unfiltered ("chill Use the Chill language\n");
|
||
printf_unfiltered ("modula-2 Use the Modula-2 language\n");
|
||
/* Restore the silly string. */
|
||
set_language(current_language->la_language);
|
||
return;
|
||
}
|
||
|
||
/* Search the list of languages for a match. */
|
||
for (i = 0; i < languages_size; i++) {
|
||
if (STREQ (languages[i]->la_name, language)) {
|
||
/* Found it! Go into manual mode, and use this language. */
|
||
if (languages[i]->la_language == language_auto) {
|
||
/* Enter auto mode. Set to the current frame's language, if known. */
|
||
language_mode = language_mode_auto;
|
||
flang = get_frame_language();
|
||
if (flang!=language_unknown)
|
||
set_language(flang);
|
||
expected_language = current_language;
|
||
return;
|
||
} else {
|
||
/* Enter manual mode. Set the specified language. */
|
||
language_mode = language_mode_manual;
|
||
current_language = languages[i];
|
||
set_type_range ();
|
||
set_lang_str();
|
||
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");
|
||
}
|
||
|
||
/* Set command. Change the setting for type checking. */
|
||
static void
|
||
set_type_command(ignore, from_tty)
|
||
char *ignore;
|
||
int from_tty;
|
||
{
|
||
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"))
|
||
{
|
||
type_mode = type_mode_auto;
|
||
set_type_range();
|
||
/* Avoid hitting the set_type_str call below. We
|
||
did it in set_type_range. */
|
||
return;
|
||
}
|
||
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;
|
||
{
|
||
|
||
if (range_check != current_language->la_range_check)
|
||
printf_unfiltered(
|
||
"Warning: the current range check setting does not match the language.\n");
|
||
}
|
||
|
||
/* Set command. Change the setting for range checking. */
|
||
static void
|
||
set_range_command(ignore, from_tty)
|
||
char *ignore;
|
||
int from_tty;
|
||
{
|
||
if (STREQ(range,"on"))
|
||
{
|
||
range_check = range_check_on;
|
||
range_mode = range_mode_manual;
|
||
}
|
||
else if (STREQ(range,"warn"))
|
||
{
|
||
range_check = range_check_warn;
|
||
range_mode = range_mode_manual;
|
||
}
|
||
else if (STREQ(range,"off"))
|
||
{
|
||
range_check = range_check_off;
|
||
range_mode = range_mode_manual;
|
||
}
|
||
else if (STREQ(range,"auto"))
|
||
{
|
||
range_mode = range_mode_auto;
|
||
set_type_range();
|
||
/* Avoid hitting the set_range_str call below. We
|
||
did it in set_type_range. */
|
||
return;
|
||
}
|
||
set_range_str();
|
||
show_range_command((char *)0, from_tty);
|
||
}
|
||
|
||
/* 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. */
|
||
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. */
|
||
|
||
void
|
||
set_language(lang)
|
||
enum language lang;
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; i < languages_size; i++) {
|
||
if (languages[i]->la_language == lang) {
|
||
current_language = languages[i];
|
||
set_type_range ();
|
||
set_lang_str();
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* 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);
|
||
}
|
||
|
||
static void
|
||
set_type_str()
|
||
{
|
||
char *tmp, *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);
|
||
}
|
||
|
||
static void
|
||
set_range_str()
|
||
{
|
||
char *tmp, *pref = "";
|
||
|
||
free (range);
|
||
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 = concat(pref,tmp,NULL);
|
||
}
|
||
|
||
|
||
/* Print out the current language settings: language, range and
|
||
type checking. If QUIETLY, print only what has changed. */
|
||
|
||
void
|
||
language_info (quietly)
|
||
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);
|
||
|
||
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);
|
||
}
|
||
}
|
||
|
||
/* Return the result of a binary operation. */
|
||
|
||
#if 0 /* Currently unused */
|
||
|
||
struct type *
|
||
binop_result_type(v1,v2)
|
||
value v1,v2;
|
||
{
|
||
int l1,l2,size,uns;
|
||
|
||
l1 = TYPE_LENGTH(VALUE_TYPE(v1));
|
||
l2 = TYPE_LENGTH(VALUE_TYPE(v2));
|
||
|
||
switch(current_language->la_language)
|
||
{
|
||
case language_c:
|
||
case language_cplus:
|
||
if (TYPE_CODE(VALUE_TYPE(v1))==TYPE_CODE_FLT)
|
||
return TYPE_CODE(VALUE_TYPE(v2)) == TYPE_CODE_FLT && l2 > l1 ?
|
||
VALUE_TYPE(v2) : VALUE_TYPE(v1);
|
||
else if (TYPE_CODE(VALUE_TYPE(v2))==TYPE_CODE_FLT)
|
||
return TYPE_CODE(VALUE_TYPE(v1)) == TYPE_CODE_FLT && l1 > l2 ?
|
||
VALUE_TYPE(v1) : VALUE_TYPE(v2);
|
||
else if (TYPE_UNSIGNED(VALUE_TYPE(v1)) && l1 > l2)
|
||
return VALUE_TYPE(v1);
|
||
else if (TYPE_UNSIGNED(VALUE_TYPE(v2)) && l2 > l1)
|
||
return VALUE_TYPE(v2);
|
||
else /* Both are signed. Result is the longer type */
|
||
return l1 > l2 ? VALUE_TYPE(v1) : VALUE_TYPE(v2);
|
||
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);
|
||
break;
|
||
case language_chill:
|
||
error ("Missing Chill support in function binop_result_check.");/*FIXME*/
|
||
}
|
||
abort();
|
||
return (struct type *)0; /* For lint */
|
||
}
|
||
|
||
#endif /* 0 */
|
||
|
||
|
||
/* This page contains functions that return format strings for
|
||
printf for printing out numbers in different formats */
|
||
|
||
/* Returns the appropriate printf format for hexadecimal
|
||
numbers. */
|
||
char *
|
||
local_hex_format_custom(pre)
|
||
char *pre;
|
||
{
|
||
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;
|
||
}
|
||
|
||
/* 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];
|
||
|
||
sprintf (res, local_hex_format(), num);
|
||
return res;
|
||
}
|
||
|
||
/* 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 char res[50];
|
||
|
||
sprintf (res, local_hex_format_custom(pre), num);
|
||
return res;
|
||
}
|
||
|
||
/* 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;
|
||
}
|
||
|
||
/* Returns the appropriate printf format for decimal numbers. */
|
||
char *
|
||
local_decimal_format_custom(pre)
|
||
char *pre;
|
||
{
|
||
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;
|
||
}
|
||
|
||
/* 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;
|
||
{
|
||
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;
|
||
}
|
||
}
|
||
|
||
/* 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;
|
||
{
|
||
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;
|
||
|
||
default:
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
/* Returns non-zero if the two types are the same */
|
||
int
|
||
same_type (arg1, arg2)
|
||
struct type *arg1, *arg2;
|
||
{
|
||
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;
|
||
}
|
||
|
||
/* Returns non-zero if the type is integral */
|
||
int
|
||
integral_type (type)
|
||
struct type *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.");
|
||
}
|
||
}
|
||
|
||
/* Returns non-zero if the value is numeric */
|
||
int
|
||
numeric_type (type)
|
||
struct type *type;
|
||
{
|
||
switch (TYPE_CODE (type)) {
|
||
case TYPE_CODE_INT:
|
||
case TYPE_CODE_FLT:
|
||
return 1;
|
||
|
||
default:
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
/* Returns non-zero if the value is a character type */
|
||
int
|
||
character_type (type)
|
||
struct type *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);
|
||
}
|
||
}
|
||
|
||
/* Returns non-zero if the value is a string type */
|
||
int
|
||
string_type (type)
|
||
struct type *type;
|
||
{
|
||
switch(current_language->la_language)
|
||
{
|
||
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);
|
||
}
|
||
}
|
||
|
||
/* Returns non-zero if the value is a boolean type */
|
||
int
|
||
boolean_type (type)
|
||
struct type *type;
|
||
{
|
||
switch(current_language->la_language)
|
||
{
|
||
case language_chill:
|
||
case language_m2:
|
||
return TYPE_CODE(type) != TYPE_CODE_BOOL ? 0 : 1;
|
||
|
||
case language_c:
|
||
case language_cplus:
|
||
return TYPE_CODE(type) != TYPE_CODE_INT ? 0 : 1;
|
||
default:
|
||
return (0);
|
||
}
|
||
}
|
||
|
||
/* Returns non-zero if the value is a floating-point type */
|
||
int
|
||
float_type (type)
|
||
struct type *type;
|
||
{
|
||
return TYPE_CODE(type) == TYPE_CODE_FLT;
|
||
}
|
||
|
||
/* Returns non-zero if the value is a pointer type */
|
||
int
|
||
pointer_type(type)
|
||
struct type *type;
|
||
{
|
||
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;
|
||
{
|
||
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);
|
||
}
|
||
}
|
||
|
||
/* 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 val;
|
||
{
|
||
int len, i;
|
||
struct type *type;
|
||
LONGEST v;
|
||
|
||
switch (current_language->la_language) {
|
||
|
||
case language_c:
|
||
case language_cplus:
|
||
return !value_logical_not (val);
|
||
|
||
case language_m2:
|
||
type = VALUE_TYPE(val);
|
||
if (TYPE_CODE (type) != TYPE_CODE_BOOL)
|
||
return 0; /* Not a BOOLEAN at all */
|
||
/* Search the fields for one that matches the current value. */
|
||
len = TYPE_NFIELDS (type);
|
||
v = value_as_long (val);
|
||
for (i = 0; i < len; i++)
|
||
{
|
||
QUIT;
|
||
if (v == TYPE_FIELD_BITPOS (type, i))
|
||
break;
|
||
}
|
||
if (i >= len)
|
||
return 0; /* Not a valid BOOLEAN value */
|
||
if (STREQ ("TRUE", TYPE_FIELD_NAME(VALUE_TYPE(val), i)))
|
||
return 1; /* BOOLEAN with value TRUE */
|
||
else
|
||
return 0; /* BOOLEAN with value FALSE */
|
||
break;
|
||
|
||
case language_chill:
|
||
error ("Missing Chill support in function value_type."); /*FIXME*/
|
||
|
||
default:
|
||
error ("Language not supported.");
|
||
}
|
||
}
|
||
|
||
/* 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 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!=(value)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 */
|
||
|
||
|
||
/* 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 (va_alist)
|
||
va_dcl
|
||
{
|
||
va_list args;
|
||
char *string;
|
||
|
||
if (type_check==type_check_warn)
|
||
fprintf_unfiltered(gdb_stderr,warning_pre_print);
|
||
else
|
||
target_terminal_ours();
|
||
|
||
va_start (args);
|
||
string = va_arg (args, char *);
|
||
vfprintf_unfiltered (gdb_stderr, string, args);
|
||
fprintf_unfiltered (gdb_stderr, "\n");
|
||
va_end (args);
|
||
if (type_check==type_check_on)
|
||
return_to_top_level (RETURN_ERROR);
|
||
}
|
||
|
||
void
|
||
range_error (va_alist)
|
||
va_dcl
|
||
{
|
||
va_list args;
|
||
char *string;
|
||
|
||
if (range_check==range_check_warn)
|
||
fprintf_unfiltered(gdb_stderr,warning_pre_print);
|
||
else
|
||
target_terminal_ours();
|
||
|
||
va_start (args);
|
||
string = va_arg (args, char *);
|
||
vfprintf_unfiltered (gdb_stderr, string, args);
|
||
fprintf_unfiltered (gdb_stderr, "\n");
|
||
va_end (args);
|
||
if (range_check==range_check_on)
|
||
return_to_top_level (RETURN_ERROR);
|
||
}
|
||
|
||
|
||
/* This page contains miscellaneous functions */
|
||
|
||
/* 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, "");
|
||
}
|
||
|
||
/* 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;
|
||
}
|
||
|
||
/* Define the language that is no language. */
|
||
|
||
static int
|
||
unk_lang_parser ()
|
||
{
|
||
return 1;
|
||
}
|
||
|
||
static void
|
||
unk_lang_error (msg)
|
||
char *msg;
|
||
{
|
||
error ("Attempted to parse an expression with unknown language");
|
||
}
|
||
|
||
static void
|
||
unk_lang_printchar (c, stream)
|
||
register int c;
|
||
GDB_FILE *stream;
|
||
{
|
||
error ("internal error - unimplemented function unk_lang_printchar called.");
|
||
}
|
||
|
||
static void
|
||
unk_lang_printstr (stream, string, length, force_ellipses)
|
||
GDB_FILE *stream;
|
||
char *string;
|
||
unsigned int length;
|
||
int force_ellipses;
|
||
{
|
||
error ("internal error - unimplemented function unk_lang_printstr called.");
|
||
}
|
||
|
||
static struct type *
|
||
unk_lang_create_fundamental_type (objfile, typeid)
|
||
struct objfile *objfile;
|
||
int typeid;
|
||
{
|
||
error ("internal error - unimplemented function unk_lang_create_fundamental_type called.");
|
||
}
|
||
|
||
void
|
||
unk_lang_print_type (type, varstring, stream, show, level)
|
||
struct type *type;
|
||
char *varstring;
|
||
GDB_FILE *stream;
|
||
int show;
|
||
int level;
|
||
{
|
||
error ("internal error - unimplemented function unk_lang_print_type called.");
|
||
}
|
||
|
||
int
|
||
unk_lang_val_print (type, valaddr, address, stream, format, deref_ref,
|
||
recurse, pretty)
|
||
struct type *type;
|
||
char *valaddr;
|
||
CORE_ADDR address;
|
||
GDB_FILE *stream;
|
||
int format;
|
||
int deref_ref;
|
||
int recurse;
|
||
enum val_prettyprint pretty;
|
||
{
|
||
error ("internal error - unimplemented function unk_lang_val_print called.");
|
||
}
|
||
|
||
static struct type ** const (unknown_builtin_types[]) = { 0 };
|
||
static const struct op_print unk_op_print_tab[] = {
|
||
{NULL, OP_NULL, PREC_NULL, 0}
|
||
};
|
||
|
||
const struct language_defn unknown_language_defn = {
|
||
"unknown",
|
||
language_unknown,
|
||
&unknown_builtin_types[0],
|
||
range_check_off,
|
||
type_check_off,
|
||
unk_lang_parser,
|
||
unk_lang_error,
|
||
unk_lang_printchar, /* Print character constant */
|
||
unk_lang_printstr,
|
||
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 */
|
||
&builtin_type_error, /* longest signed integral type */
|
||
&builtin_type_error, /* longest unsigned integral type */
|
||
&builtin_type_error, /* longest floating point type */
|
||
{"", "", "", ""}, /* 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 */
|
||
LANG_MAGIC
|
||
};
|
||
|
||
/* These two structs define fake entries for the "local" and "auto" options. */
|
||
const struct language_defn auto_language_defn = {
|
||
"auto",
|
||
language_auto,
|
||
&unknown_builtin_types[0],
|
||
range_check_off,
|
||
type_check_off,
|
||
unk_lang_parser,
|
||
unk_lang_error,
|
||
unk_lang_printchar, /* Print character constant */
|
||
unk_lang_printstr,
|
||
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 */
|
||
&builtin_type_error, /* longest signed integral type */
|
||
&builtin_type_error, /* longest unsigned integral type */
|
||
&builtin_type_error, /* longest floating point type */
|
||
{"", "", "", ""}, /* 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 */
|
||
LANG_MAGIC
|
||
};
|
||
|
||
const struct language_defn local_language_defn = {
|
||
"local",
|
||
language_auto,
|
||
&unknown_builtin_types[0],
|
||
range_check_off,
|
||
type_check_off,
|
||
unk_lang_parser,
|
||
unk_lang_error,
|
||
unk_lang_printchar, /* Print character constant */
|
||
unk_lang_printstr,
|
||
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 */
|
||
&builtin_type_error, /* longest signed integral type */
|
||
&builtin_type_error, /* longest unsigned integral type */
|
||
&builtin_type_error, /* longest floating point type */
|
||
{"", "", "", ""}, /* 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 */
|
||
LANG_MAGIC
|
||
};
|
||
|
||
/* Initialize the language routines */
|
||
|
||
void
|
||
_initialize_language()
|
||
{
|
||
struct cmd_list_element *set, *show;
|
||
|
||
/* GDB commands for language specific stuff */
|
||
|
||
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;
|
||
|
||
add_prefix_cmd ("check", no_class, set_check,
|
||
"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",
|
||
&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"));
|
||
range = savestring ("auto",strlen("auto"));
|
||
type = savestring ("auto",strlen("auto"));
|
||
|
||
/* Have the above take effect */
|
||
|
||
set_language_command (language, 0);
|
||
set_type_command (NULL, 0);
|
||
set_range_command (NULL, 0);
|
||
}
|