1404 lines
41 KiB
C
1404 lines
41 KiB
C
/* C language support routines for GDB, the GNU debugger.
|
||
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Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2002, 2003,
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2004, 2005, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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This file is part of GDB.
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|
||
This program is free software; you can redistribute it and/or modify
|
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it under the terms of the GNU General Public License as published by
|
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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,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
|
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "symtab.h"
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#include "gdbtypes.h"
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#include "expression.h"
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#include "parser-defs.h"
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#include "language.h"
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#include "c-lang.h"
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#include "valprint.h"
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#include "macroscope.h"
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#include "gdb_assert.h"
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#include "charset.h"
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#include "gdb_string.h"
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#include "demangle.h"
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#include "cp-abi.h"
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#include "cp-support.h"
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#include "gdb_obstack.h"
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#include <ctype.h>
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extern void _initialize_c_language (void);
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/* Given a C string type, STR_TYPE, return the corresponding target
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character set name. */
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static const char *
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||
charset_for_string_type (enum c_string_type str_type,
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struct gdbarch *gdbarch)
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{
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switch (str_type & ~C_CHAR)
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{
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case C_STRING:
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return target_charset (gdbarch);
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case C_WIDE_STRING:
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||
return target_wide_charset (gdbarch);
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||
case C_STRING_16:
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||
/* FIXME: UTF-16 is not always correct. */
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||
if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
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return "UTF-16BE";
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else
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return "UTF-16LE";
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||
case C_STRING_32:
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||
/* FIXME: UTF-32 is not always correct. */
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if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
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return "UTF-32BE";
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else
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return "UTF-32LE";
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}
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internal_error (__FILE__, __LINE__, "unhandled c_string_type");
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}
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/* Classify ELTTYPE according to what kind of character it is. Return
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the enum constant representing the character type. Also set
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*ENCODING to the name of the character set to use when converting
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characters of this type in target BYTE_ORDER to the host character set. */
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static enum c_string_type
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classify_type (struct type *elttype, struct gdbarch *gdbarch,
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const char **encoding)
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{
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enum c_string_type result;
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/* We loop because ELTTYPE may be a typedef, and we want to
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successively peel each typedef until we reach a type we
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understand. We don't use CHECK_TYPEDEF because that will strip
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all typedefs at once -- but in C, wchar_t is itself a typedef, so
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that would do the wrong thing. */
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while (elttype)
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{
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char *name = TYPE_NAME (elttype);
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if (TYPE_CODE (elttype) == TYPE_CODE_CHAR || !name)
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{
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result = C_CHAR;
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goto done;
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}
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if (!strcmp (name, "wchar_t"))
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{
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result = C_WIDE_CHAR;
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goto done;
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}
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if (!strcmp (name, "char16_t"))
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{
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result = C_CHAR_16;
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goto done;
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}
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if (!strcmp (name, "char32_t"))
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{
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result = C_CHAR_32;
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goto done;
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}
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if (TYPE_CODE (elttype) != TYPE_CODE_TYPEDEF)
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break;
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/* Call for side effects. */
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check_typedef (elttype);
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if (TYPE_TARGET_TYPE (elttype))
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elttype = TYPE_TARGET_TYPE (elttype);
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else
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{
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/* Perhaps check_typedef did not update the target type. In
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this case, force the lookup again and hope it works out.
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It never will for C, but it might for C++. */
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CHECK_TYPEDEF (elttype);
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||
}
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}
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/* Punt. */
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result = C_CHAR;
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||
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done:
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if (encoding)
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*encoding = charset_for_string_type (result, gdbarch);
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||
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return result;
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}
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|
||
/* Return true if print_wchar can display W without resorting to a
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numeric escape, false otherwise. */
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static int
|
||
wchar_printable (gdb_wchar_t w)
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||
{
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||
return (gdb_iswprint (w)
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||
|| w == LCST ('\a') || w == LCST ('\b')
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|| w == LCST ('\f') || w == LCST ('\n')
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||
|| w == LCST ('\r') || w == LCST ('\t')
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|| w == LCST ('\v'));
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||
}
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||
/* A helper function that converts the contents of STRING to wide
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characters and then appends them to OUTPUT. */
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static void
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append_string_as_wide (const char *string, struct obstack *output)
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{
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for (; *string; ++string)
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{
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gdb_wchar_t w = gdb_btowc (*string);
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obstack_grow (output, &w, sizeof (gdb_wchar_t));
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}
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}
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/* Print a wide character W to OUTPUT. ORIG is a pointer to the
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original (target) bytes representing the character, ORIG_LEN is the
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number of valid bytes. WIDTH is the number of bytes in a base
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characters of the type. OUTPUT is an obstack to which wide
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characters are emitted. QUOTER is a (narrow) character indicating
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the style of quotes surrounding the character to be printed.
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NEED_ESCAPE is an in/out flag which is used to track numeric
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escapes across calls. */
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static void
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print_wchar (gdb_wint_t w, const gdb_byte *orig, int orig_len,
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int width, enum bfd_endian byte_order, struct obstack *output,
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int quoter, int *need_escapep)
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{
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int need_escape = *need_escapep;
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*need_escapep = 0;
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if (gdb_iswprint (w) && (!need_escape || (!gdb_iswdigit (w)
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&& w != LCST ('8')
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&& w != LCST ('9'))))
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{
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gdb_wchar_t wchar = w;
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if (w == gdb_btowc (quoter) || w == LCST ('\\'))
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obstack_grow_wstr (output, LCST ("\\"));
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obstack_grow (output, &wchar, sizeof (gdb_wchar_t));
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}
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else
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{
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switch (w)
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{
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case LCST ('\a'):
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obstack_grow_wstr (output, LCST ("\\a"));
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break;
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case LCST ('\b'):
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obstack_grow_wstr (output, LCST ("\\b"));
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break;
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case LCST ('\f'):
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obstack_grow_wstr (output, LCST ("\\f"));
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break;
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case LCST ('\n'):
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obstack_grow_wstr (output, LCST ("\\n"));
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break;
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case LCST ('\r'):
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obstack_grow_wstr (output, LCST ("\\r"));
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||
break;
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case LCST ('\t'):
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obstack_grow_wstr (output, LCST ("\\t"));
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break;
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case LCST ('\v'):
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obstack_grow_wstr (output, LCST ("\\v"));
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break;
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default:
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||
{
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int i;
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||
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for (i = 0; i + width <= orig_len; i += width)
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{
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char octal[30];
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ULONGEST value;
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value = extract_unsigned_integer (&orig[i], width, byte_order);
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/* If the value fits in 3 octal digits, print it that
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way. Otherwise, print it as a hex escape. */
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if (value <= 0777)
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sprintf (octal, "\\%.3o", (int) (value & 0777));
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else
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sprintf (octal, "\\x%lx", (long) value);
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append_string_as_wide (octal, output);
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}
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/* If we somehow have extra bytes, print them now. */
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while (i < orig_len)
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{
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char octal[5];
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sprintf (octal, "\\%.3o", orig[i] & 0xff);
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append_string_as_wide (octal, output);
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++i;
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}
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*need_escapep = 1;
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}
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break;
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}
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}
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}
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/* Print the character C on STREAM as part of the contents of a literal
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string whose delimiter is QUOTER. Note that that format for printing
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characters and strings is language specific. */
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void
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c_emit_char (int c, struct type *type,
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struct ui_file *stream, int quoter)
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{
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enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
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struct obstack wchar_buf, output;
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struct cleanup *cleanups;
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const char *encoding;
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gdb_byte *buf;
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struct wchar_iterator *iter;
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int need_escape = 0;
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classify_type (type, get_type_arch (type), &encoding);
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buf = alloca (TYPE_LENGTH (type));
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pack_long (buf, type, c);
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iter = make_wchar_iterator (buf, TYPE_LENGTH (type), encoding,
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TYPE_LENGTH (type));
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cleanups = make_cleanup_wchar_iterator (iter);
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/* This holds the printable form of the wchar_t data. */
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||
obstack_init (&wchar_buf);
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||
make_cleanup_obstack_free (&wchar_buf);
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||
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||
while (1)
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||
{
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||
int num_chars;
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||
gdb_wchar_t *chars;
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||
const gdb_byte *buf;
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||
size_t buflen;
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||
int print_escape = 1;
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enum wchar_iterate_result result;
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||
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num_chars = wchar_iterate (iter, &result, &chars, &buf, &buflen);
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if (num_chars < 0)
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break;
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if (num_chars > 0)
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{
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||
/* If all characters are printable, print them. Otherwise,
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||
we're going to have to print an escape sequence. We
|
||
check all characters because we want to print the target
|
||
bytes in the escape sequence, and we don't know character
|
||
boundaries there. */
|
||
int i;
|
||
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print_escape = 0;
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for (i = 0; i < num_chars; ++i)
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if (!wchar_printable (chars[i]))
|
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{
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print_escape = 1;
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break;
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}
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||
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||
if (!print_escape)
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||
{
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for (i = 0; i < num_chars; ++i)
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||
print_wchar (chars[i], buf, buflen, TYPE_LENGTH (type),
|
||
byte_order, &wchar_buf, quoter, &need_escape);
|
||
}
|
||
}
|
||
|
||
/* This handles the NUM_CHARS == 0 case as well. */
|
||
if (print_escape)
|
||
print_wchar (gdb_WEOF, buf, buflen, TYPE_LENGTH (type), byte_order,
|
||
&wchar_buf, quoter, &need_escape);
|
||
}
|
||
|
||
/* The output in the host encoding. */
|
||
obstack_init (&output);
|
||
make_cleanup_obstack_free (&output);
|
||
|
||
convert_between_encodings (INTERMEDIATE_ENCODING, host_charset (),
|
||
obstack_base (&wchar_buf),
|
||
obstack_object_size (&wchar_buf),
|
||
1, &output, translit_char);
|
||
obstack_1grow (&output, '\0');
|
||
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fputs_filtered (obstack_base (&output), stream);
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||
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do_cleanups (cleanups);
|
||
}
|
||
|
||
void
|
||
c_printchar (int c, struct type *type, struct ui_file *stream)
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||
{
|
||
enum c_string_type str_type;
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||
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str_type = classify_type (type, get_type_arch (type), NULL);
|
||
switch (str_type)
|
||
{
|
||
case C_CHAR:
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||
break;
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||
case C_WIDE_CHAR:
|
||
fputc_filtered ('L', stream);
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||
break;
|
||
case C_CHAR_16:
|
||
fputc_filtered ('u', stream);
|
||
break;
|
||
case C_CHAR_32:
|
||
fputc_filtered ('U', stream);
|
||
break;
|
||
}
|
||
|
||
fputc_filtered ('\'', stream);
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||
LA_EMIT_CHAR (c, type, stream, '\'');
|
||
fputc_filtered ('\'', stream);
|
||
}
|
||
|
||
/* Print the character string STRING, printing at most LENGTH characters.
|
||
LENGTH is -1 if the string is nul terminated. Each character is WIDTH bytes
|
||
long. Printing stops early if the number hits print_max; repeat counts are
|
||
printed as appropriate. Print ellipses at the end if we had to stop before
|
||
printing LENGTH characters, or if FORCE_ELLIPSES. */
|
||
|
||
void
|
||
c_printstr (struct ui_file *stream, struct type *type, const gdb_byte *string,
|
||
unsigned int length, const char *user_encoding, int force_ellipses,
|
||
const struct value_print_options *options)
|
||
{
|
||
enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
|
||
unsigned int i;
|
||
unsigned int things_printed = 0;
|
||
int in_quotes = 0;
|
||
int need_comma = 0;
|
||
int width = TYPE_LENGTH (type);
|
||
struct obstack wchar_buf, output;
|
||
struct cleanup *cleanup;
|
||
enum c_string_type str_type;
|
||
const char *type_encoding;
|
||
const char *encoding;
|
||
struct wchar_iterator *iter;
|
||
int finished = 0;
|
||
int need_escape = 0;
|
||
|
||
if (length == -1)
|
||
{
|
||
unsigned long current_char = 1;
|
||
|
||
for (i = 0; current_char; ++i)
|
||
{
|
||
QUIT;
|
||
current_char = extract_unsigned_integer (string + i * width,
|
||
width, byte_order);
|
||
}
|
||
length = i;
|
||
}
|
||
|
||
/* If the string was not truncated due to `set print elements', and
|
||
the last byte of it is a null, we don't print that, in traditional C
|
||
style. */
|
||
if (!force_ellipses
|
||
&& length > 0
|
||
&& (extract_unsigned_integer (string + (length - 1) * width,
|
||
width, byte_order) == 0))
|
||
length--;
|
||
|
||
str_type = (classify_type (type, get_type_arch (type), &type_encoding)
|
||
& ~C_CHAR);
|
||
switch (str_type)
|
||
{
|
||
case C_STRING:
|
||
break;
|
||
case C_WIDE_STRING:
|
||
fputs_filtered ("L", stream);
|
||
break;
|
||
case C_STRING_16:
|
||
fputs_filtered ("u", stream);
|
||
break;
|
||
case C_STRING_32:
|
||
fputs_filtered ("U", stream);
|
||
break;
|
||
}
|
||
|
||
encoding = (user_encoding && *user_encoding) ? user_encoding : type_encoding;
|
||
|
||
if (length == 0)
|
||
{
|
||
fputs_filtered ("\"\"", stream);
|
||
return;
|
||
}
|
||
|
||
/* Arrange to iterate over the characters, in wchar_t form. */
|
||
iter = make_wchar_iterator (string, length * width, encoding, width);
|
||
cleanup = make_cleanup_wchar_iterator (iter);
|
||
|
||
/* WCHAR_BUF is the obstack we use to represent the string in
|
||
wchar_t form. */
|
||
obstack_init (&wchar_buf);
|
||
make_cleanup_obstack_free (&wchar_buf);
|
||
|
||
while (!finished && things_printed < options->print_max)
|
||
{
|
||
int num_chars;
|
||
enum wchar_iterate_result result;
|
||
gdb_wchar_t *chars;
|
||
const gdb_byte *buf;
|
||
size_t buflen;
|
||
|
||
QUIT;
|
||
|
||
if (need_comma)
|
||
{
|
||
obstack_grow_wstr (&wchar_buf, LCST (", "));
|
||
need_comma = 0;
|
||
}
|
||
|
||
num_chars = wchar_iterate (iter, &result, &chars, &buf, &buflen);
|
||
/* We only look at repetitions when we were able to convert a
|
||
single character in isolation. This makes the code simpler
|
||
and probably does the sensible thing in the majority of
|
||
cases. */
|
||
while (num_chars == 1 && things_printed < options->print_max)
|
||
{
|
||
/* Count the number of repetitions. */
|
||
unsigned int reps = 0;
|
||
gdb_wchar_t current_char = chars[0];
|
||
const gdb_byte *orig_buf = buf;
|
||
int orig_len = buflen;
|
||
|
||
if (need_comma)
|
||
{
|
||
obstack_grow_wstr (&wchar_buf, LCST (", "));
|
||
need_comma = 0;
|
||
}
|
||
|
||
while (num_chars == 1 && current_char == chars[0])
|
||
{
|
||
num_chars = wchar_iterate (iter, &result, &chars, &buf, &buflen);
|
||
++reps;
|
||
}
|
||
|
||
/* Emit CURRENT_CHAR according to the repetition count and
|
||
options. */
|
||
if (reps > options->repeat_count_threshold)
|
||
{
|
||
if (in_quotes)
|
||
{
|
||
if (options->inspect_it)
|
||
obstack_grow_wstr (&wchar_buf, LCST ("\\\", "));
|
||
else
|
||
obstack_grow_wstr (&wchar_buf, LCST ("\", "));
|
||
in_quotes = 0;
|
||
}
|
||
obstack_grow_wstr (&wchar_buf, LCST ("'"));
|
||
need_escape = 0;
|
||
print_wchar (current_char, orig_buf, orig_len, width,
|
||
byte_order, &wchar_buf, '\'', &need_escape);
|
||
obstack_grow_wstr (&wchar_buf, LCST ("'"));
|
||
{
|
||
/* Painful gyrations. */
|
||
int j;
|
||
char *s = xstrprintf (_(" <repeats %u times>"), reps);
|
||
|
||
for (j = 0; s[j]; ++j)
|
||
{
|
||
gdb_wchar_t w = gdb_btowc (s[j]);
|
||
obstack_grow (&wchar_buf, &w, sizeof (gdb_wchar_t));
|
||
}
|
||
xfree (s);
|
||
}
|
||
things_printed += options->repeat_count_threshold;
|
||
need_comma = 1;
|
||
}
|
||
else
|
||
{
|
||
/* Saw the character one or more times, but fewer than
|
||
the repetition threshold. */
|
||
if (!in_quotes)
|
||
{
|
||
if (options->inspect_it)
|
||
obstack_grow_wstr (&wchar_buf, LCST ("\\\""));
|
||
else
|
||
obstack_grow_wstr (&wchar_buf, LCST ("\""));
|
||
in_quotes = 1;
|
||
need_escape = 0;
|
||
}
|
||
|
||
while (reps-- > 0)
|
||
{
|
||
print_wchar (current_char, orig_buf, orig_len, width,
|
||
byte_order, &wchar_buf, '"', &need_escape);
|
||
++things_printed;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* NUM_CHARS and the other outputs from wchar_iterate are valid
|
||
here regardless of which branch was taken above. */
|
||
if (num_chars < 0)
|
||
{
|
||
/* Hit EOF. */
|
||
finished = 1;
|
||
break;
|
||
}
|
||
|
||
switch (result)
|
||
{
|
||
case wchar_iterate_invalid:
|
||
if (!in_quotes)
|
||
{
|
||
if (options->inspect_it)
|
||
obstack_grow_wstr (&wchar_buf, LCST ("\\\""));
|
||
else
|
||
obstack_grow_wstr (&wchar_buf, LCST ("\""));
|
||
in_quotes = 1;
|
||
}
|
||
need_escape = 0;
|
||
print_wchar (gdb_WEOF, buf, buflen, width, byte_order, &wchar_buf,
|
||
'"', &need_escape);
|
||
break;
|
||
|
||
case wchar_iterate_incomplete:
|
||
if (in_quotes)
|
||
{
|
||
if (options->inspect_it)
|
||
obstack_grow_wstr (&wchar_buf, LCST ("\\\","));
|
||
else
|
||
obstack_grow_wstr (&wchar_buf, LCST ("\","));
|
||
in_quotes = 0;
|
||
}
|
||
obstack_grow_wstr (&wchar_buf, LCST (" <incomplete sequence "));
|
||
print_wchar (gdb_WEOF, buf, buflen, width, byte_order, &wchar_buf,
|
||
0, &need_escape);
|
||
obstack_grow_wstr (&wchar_buf, LCST (">"));
|
||
finished = 1;
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Terminate the quotes if necessary. */
|
||
if (in_quotes)
|
||
{
|
||
if (options->inspect_it)
|
||
obstack_grow_wstr (&wchar_buf, LCST ("\\\""));
|
||
else
|
||
obstack_grow_wstr (&wchar_buf, LCST ("\""));
|
||
}
|
||
|
||
if (force_ellipses || !finished)
|
||
obstack_grow_wstr (&wchar_buf, LCST ("..."));
|
||
|
||
/* OUTPUT is where we collect `char's for printing. */
|
||
obstack_init (&output);
|
||
make_cleanup_obstack_free (&output);
|
||
|
||
convert_between_encodings (INTERMEDIATE_ENCODING, host_charset (),
|
||
obstack_base (&wchar_buf),
|
||
obstack_object_size (&wchar_buf),
|
||
1, &output, translit_char);
|
||
obstack_1grow (&output, '\0');
|
||
|
||
fputs_filtered (obstack_base (&output), stream);
|
||
|
||
do_cleanups (cleanup);
|
||
}
|
||
|
||
/* Obtain a C string from the inferior storing it in a newly allocated
|
||
buffer in BUFFER, which should be freed by the caller. If the
|
||
in- and out-parameter *LENGTH is specified at -1, the string is read
|
||
until a null character of the appropriate width is found, otherwise
|
||
the string is read to the length of characters specified.
|
||
The size of a character is determined by the length of the target
|
||
type of the pointer or array. If VALUE is an array with a known
|
||
length, the function will not read past the end of the array.
|
||
On completion, *LENGTH will be set to the size of the string read in
|
||
characters. (If a length of -1 is specified, the length returned
|
||
will not include the null character). CHARSET is always set to the
|
||
target charset. */
|
||
|
||
void
|
||
c_get_string (struct value *value, gdb_byte **buffer, int *length,
|
||
struct type **char_type, const char **charset)
|
||
{
|
||
int err, width;
|
||
unsigned int fetchlimit;
|
||
struct type *type = check_typedef (value_type (value));
|
||
struct type *element_type = TYPE_TARGET_TYPE (type);
|
||
int req_length = *length;
|
||
enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
|
||
enum c_string_type kind;
|
||
|
||
if (element_type == NULL)
|
||
goto error;
|
||
|
||
if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
|
||
{
|
||
/* If we know the size of the array, we can use it as a limit on the
|
||
number of characters to be fetched. */
|
||
if (TYPE_NFIELDS (type) == 1
|
||
&& TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_RANGE)
|
||
{
|
||
LONGEST low_bound, high_bound;
|
||
|
||
get_discrete_bounds (TYPE_FIELD_TYPE (type, 0),
|
||
&low_bound, &high_bound);
|
||
fetchlimit = high_bound - low_bound + 1;
|
||
}
|
||
else
|
||
fetchlimit = UINT_MAX;
|
||
}
|
||
else if (TYPE_CODE (type) == TYPE_CODE_PTR)
|
||
fetchlimit = UINT_MAX;
|
||
else
|
||
/* We work only with arrays and pointers. */
|
||
goto error;
|
||
|
||
if (! c_textual_element_type (element_type, 0))
|
||
goto error;
|
||
kind = classify_type (element_type,
|
||
get_type_arch (element_type),
|
||
charset);
|
||
width = TYPE_LENGTH (element_type);
|
||
|
||
/* If the string lives in GDB's memory instead of the inferior's, then we
|
||
just need to copy it to BUFFER. Also, since such strings are arrays
|
||
with known size, FETCHLIMIT will hold the size of the array. */
|
||
if ((VALUE_LVAL (value) == not_lval
|
||
|| VALUE_LVAL (value) == lval_internalvar)
|
||
&& fetchlimit != UINT_MAX)
|
||
{
|
||
int i;
|
||
const gdb_byte *contents = value_contents (value);
|
||
|
||
/* If a length is specified, use that. */
|
||
if (*length >= 0)
|
||
i = *length;
|
||
else
|
||
/* Otherwise, look for a null character. */
|
||
for (i = 0; i < fetchlimit; i++)
|
||
if (extract_unsigned_integer (contents + i * width, width,
|
||
byte_order) == 0)
|
||
break;
|
||
|
||
/* I is now either a user-defined length, the number of non-null
|
||
characters, or FETCHLIMIT. */
|
||
*length = i * width;
|
||
*buffer = xmalloc (*length);
|
||
memcpy (*buffer, contents, *length);
|
||
err = 0;
|
||
}
|
||
else
|
||
{
|
||
err = read_string (value_as_address (value), *length, width, fetchlimit,
|
||
byte_order, buffer, length);
|
||
if (err)
|
||
{
|
||
xfree (*buffer);
|
||
error (_("Error reading string from inferior: %s"),
|
||
safe_strerror (err));
|
||
}
|
||
}
|
||
|
||
/* If the LENGTH is specified at -1, we want to return the string
|
||
length up to the terminating null character. If an actual length
|
||
was specified, we want to return the length of exactly what was
|
||
read. */
|
||
if (req_length == -1)
|
||
/* If the last character is null, subtract it from LENGTH. */
|
||
if (*length > 0
|
||
&& extract_unsigned_integer (*buffer + *length - width, width,
|
||
byte_order) == 0)
|
||
*length -= width;
|
||
|
||
/* The read_string function will return the number of bytes read.
|
||
If length returned from read_string was > 0, return the number of
|
||
characters read by dividing the number of bytes by width. */
|
||
if (*length != 0)
|
||
*length = *length / width;
|
||
|
||
*char_type = element_type;
|
||
|
||
return;
|
||
|
||
error:
|
||
{
|
||
char *type_str;
|
||
|
||
type_str = type_to_string (type);
|
||
if (type_str)
|
||
{
|
||
make_cleanup (xfree, type_str);
|
||
error (_("Trying to read string with inappropriate type `%s'."),
|
||
type_str);
|
||
}
|
||
else
|
||
error (_("Trying to read string with inappropriate type."));
|
||
}
|
||
}
|
||
|
||
|
||
/* Evaluating C and C++ expressions. */
|
||
|
||
/* Convert a UCN. The digits of the UCN start at P and extend no
|
||
farther than LIMIT. DEST_CHARSET is the name of the character set
|
||
into which the UCN should be converted. The results are written to
|
||
OUTPUT. LENGTH is the maximum length of the UCN, either 4 or 8.
|
||
Returns a pointer to just after the final digit of the UCN. */
|
||
|
||
static char *
|
||
convert_ucn (char *p, char *limit, const char *dest_charset,
|
||
struct obstack *output, int length)
|
||
{
|
||
unsigned long result = 0;
|
||
gdb_byte data[4];
|
||
int i;
|
||
|
||
for (i = 0; i < length && p < limit && isxdigit (*p); ++i, ++p)
|
||
result = (result << 4) + host_hex_value (*p);
|
||
|
||
for (i = 3; i >= 0; --i)
|
||
{
|
||
data[i] = result & 0xff;
|
||
result >>= 8;
|
||
}
|
||
|
||
convert_between_encodings ("UTF-32BE", dest_charset, data, 4, 4, output,
|
||
translit_none);
|
||
|
||
return p;
|
||
}
|
||
|
||
/* Emit a character, VALUE, which was specified numerically, to
|
||
OUTPUT. TYPE is the target character type. */
|
||
|
||
static void
|
||
emit_numeric_character (struct type *type, unsigned long value,
|
||
struct obstack *output)
|
||
{
|
||
gdb_byte *buffer;
|
||
|
||
buffer = alloca (TYPE_LENGTH (type));
|
||
pack_long (buffer, type, value);
|
||
obstack_grow (output, buffer, TYPE_LENGTH (type));
|
||
}
|
||
|
||
/* Convert an octal escape sequence. TYPE is the target character
|
||
type. The digits of the escape sequence begin at P and extend no
|
||
farther than LIMIT. The result is written to OUTPUT. Returns a
|
||
pointer to just after the final digit of the escape sequence. */
|
||
|
||
static char *
|
||
convert_octal (struct type *type, char *p, char *limit, struct obstack *output)
|
||
{
|
||
int i;
|
||
unsigned long value = 0;
|
||
|
||
for (i = 0;
|
||
i < 3 && p < limit && isdigit (*p) && *p != '8' && *p != '9';
|
||
++i)
|
||
{
|
||
value = 8 * value + host_hex_value (*p);
|
||
++p;
|
||
}
|
||
|
||
emit_numeric_character (type, value, output);
|
||
|
||
return p;
|
||
}
|
||
|
||
/* Convert a hex escape sequence. TYPE is the target character type.
|
||
The digits of the escape sequence begin at P and extend no farther
|
||
than LIMIT. The result is written to OUTPUT. Returns a pointer to
|
||
just after the final digit of the escape sequence. */
|
||
|
||
static char *
|
||
convert_hex (struct type *type, char *p, char *limit, struct obstack *output)
|
||
{
|
||
unsigned long value = 0;
|
||
|
||
while (p < limit && isxdigit (*p))
|
||
{
|
||
value = 16 * value + host_hex_value (*p);
|
||
++p;
|
||
}
|
||
|
||
emit_numeric_character (type, value, output);
|
||
|
||
return p;
|
||
}
|
||
|
||
#define ADVANCE \
|
||
do { \
|
||
++p; \
|
||
if (p == limit) \
|
||
error (_("Malformed escape sequence")); \
|
||
} while (0)
|
||
|
||
/* Convert an escape sequence to a target format. TYPE is the target
|
||
character type to use, and DEST_CHARSET is the name of the target
|
||
character set. The backslash of the escape sequence is at *P, and
|
||
the escape sequence will not extend past LIMIT. The results are
|
||
written to OUTPUT. Returns a pointer to just past the final
|
||
character of the escape sequence. */
|
||
|
||
static char *
|
||
convert_escape (struct type *type, const char *dest_charset,
|
||
char *p, char *limit, struct obstack *output)
|
||
{
|
||
/* Skip the backslash. */
|
||
ADVANCE;
|
||
|
||
switch (*p)
|
||
{
|
||
case '\\':
|
||
obstack_1grow (output, '\\');
|
||
++p;
|
||
break;
|
||
|
||
case 'x':
|
||
ADVANCE;
|
||
if (!isxdigit (*p))
|
||
error (_("\\x used with no following hex digits."));
|
||
p = convert_hex (type, p, limit, output);
|
||
break;
|
||
|
||
case '0':
|
||
case '1':
|
||
case '2':
|
||
case '3':
|
||
case '4':
|
||
case '5':
|
||
case '6':
|
||
case '7':
|
||
p = convert_octal (type, p, limit, output);
|
||
break;
|
||
|
||
case 'u':
|
||
case 'U':
|
||
{
|
||
int length = *p == 'u' ? 4 : 8;
|
||
|
||
ADVANCE;
|
||
if (!isxdigit (*p))
|
||
error (_("\\u used with no following hex digits"));
|
||
p = convert_ucn (p, limit, dest_charset, output, length);
|
||
}
|
||
}
|
||
|
||
return p;
|
||
}
|
||
|
||
/* Given a single string from a (C-specific) OP_STRING list, convert
|
||
it to a target string, handling escape sequences specially. The
|
||
output is written to OUTPUT. DATA is the input string, which has
|
||
length LEN. DEST_CHARSET is the name of the target character set,
|
||
and TYPE is the type of target character to use. */
|
||
|
||
static void
|
||
parse_one_string (struct obstack *output, char *data, int len,
|
||
const char *dest_charset, struct type *type)
|
||
{
|
||
char *limit;
|
||
|
||
limit = data + len;
|
||
|
||
while (data < limit)
|
||
{
|
||
char *p = data;
|
||
|
||
/* Look for next escape, or the end of the input. */
|
||
while (p < limit && *p != '\\')
|
||
++p;
|
||
/* If we saw a run of characters, convert them all. */
|
||
if (p > data)
|
||
convert_between_encodings (host_charset (), dest_charset,
|
||
data, p - data, 1, output, translit_none);
|
||
/* If we saw an escape, convert it. */
|
||
if (p < limit)
|
||
p = convert_escape (type, dest_charset, p, limit, output);
|
||
data = p;
|
||
}
|
||
}
|
||
|
||
/* Expression evaluator for the C language family. Most operations
|
||
are delegated to evaluate_subexp_standard; see that function for a
|
||
description of the arguments. */
|
||
|
||
static struct value *
|
||
evaluate_subexp_c (struct type *expect_type, struct expression *exp,
|
||
int *pos, enum noside noside)
|
||
{
|
||
enum exp_opcode op = exp->elts[*pos].opcode;
|
||
|
||
switch (op)
|
||
{
|
||
case OP_STRING:
|
||
{
|
||
int oplen, limit;
|
||
struct type *type;
|
||
struct obstack output;
|
||
struct cleanup *cleanup;
|
||
struct value *result;
|
||
enum c_string_type dest_type;
|
||
const char *dest_charset;
|
||
|
||
obstack_init (&output);
|
||
cleanup = make_cleanup_obstack_free (&output);
|
||
|
||
++*pos;
|
||
oplen = longest_to_int (exp->elts[*pos].longconst);
|
||
|
||
++*pos;
|
||
limit = *pos + BYTES_TO_EXP_ELEM (oplen + 1);
|
||
dest_type
|
||
= (enum c_string_type) longest_to_int (exp->elts[*pos].longconst);
|
||
switch (dest_type & ~C_CHAR)
|
||
{
|
||
case C_STRING:
|
||
type = language_string_char_type (exp->language_defn,
|
||
exp->gdbarch);
|
||
break;
|
||
case C_WIDE_STRING:
|
||
type = lookup_typename (exp->language_defn, exp->gdbarch,
|
||
"wchar_t", NULL, 0);
|
||
break;
|
||
case C_STRING_16:
|
||
type = lookup_typename (exp->language_defn, exp->gdbarch,
|
||
"char16_t", NULL, 0);
|
||
break;
|
||
case C_STRING_32:
|
||
type = lookup_typename (exp->language_defn, exp->gdbarch,
|
||
"char32_t", NULL, 0);
|
||
break;
|
||
default:
|
||
internal_error (__FILE__, __LINE__, "unhandled c_string_type");
|
||
}
|
||
|
||
/* Ensure TYPE_LENGTH is valid for TYPE. */
|
||
check_typedef (type);
|
||
|
||
dest_charset = charset_for_string_type (dest_type, exp->gdbarch);
|
||
|
||
++*pos;
|
||
while (*pos < limit)
|
||
{
|
||
int len;
|
||
|
||
len = longest_to_int (exp->elts[*pos].longconst);
|
||
|
||
++*pos;
|
||
if (noside != EVAL_SKIP)
|
||
parse_one_string (&output, &exp->elts[*pos].string, len,
|
||
dest_charset, type);
|
||
*pos += BYTES_TO_EXP_ELEM (len);
|
||
}
|
||
|
||
/* Skip the trailing length and opcode. */
|
||
*pos += 2;
|
||
|
||
if (noside == EVAL_SKIP)
|
||
{
|
||
/* Return a dummy value of the appropriate type. */
|
||
if ((dest_type & C_CHAR) != 0)
|
||
result = allocate_value (type);
|
||
else
|
||
result = value_cstring ("", 0, type);
|
||
do_cleanups (cleanup);
|
||
return result;
|
||
}
|
||
|
||
if ((dest_type & C_CHAR) != 0)
|
||
{
|
||
LONGEST value;
|
||
|
||
if (obstack_object_size (&output) != TYPE_LENGTH (type))
|
||
error (_("Could not convert character constant to target character set"));
|
||
value = unpack_long (type, obstack_base (&output));
|
||
result = value_from_longest (type, value);
|
||
}
|
||
else
|
||
{
|
||
int i;
|
||
|
||
/* Write the terminating character. */
|
||
for (i = 0; i < TYPE_LENGTH (type); ++i)
|
||
obstack_1grow (&output, 0);
|
||
result = value_cstring (obstack_base (&output),
|
||
obstack_object_size (&output),
|
||
type);
|
||
}
|
||
do_cleanups (cleanup);
|
||
return result;
|
||
}
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
return evaluate_subexp_standard (expect_type, exp, pos, noside);
|
||
}
|
||
|
||
|
||
|
||
/* Table mapping opcodes into strings for printing operators
|
||
and precedences of the operators. */
|
||
|
||
const struct op_print c_op_print_tab[] =
|
||
{
|
||
{",", BINOP_COMMA, PREC_COMMA, 0},
|
||
{"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
|
||
{"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
|
||
{"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
|
||
{"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
|
||
{"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
|
||
{"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
|
||
{"==", BINOP_EQUAL, PREC_EQUAL, 0},
|
||
{"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0},
|
||
{"<=", BINOP_LEQ, PREC_ORDER, 0},
|
||
{">=", BINOP_GEQ, PREC_ORDER, 0},
|
||
{">", BINOP_GTR, PREC_ORDER, 0},
|
||
{"<", BINOP_LESS, PREC_ORDER, 0},
|
||
{">>", BINOP_RSH, PREC_SHIFT, 0},
|
||
{"<<", BINOP_LSH, PREC_SHIFT, 0},
|
||
{"+", BINOP_ADD, PREC_ADD, 0},
|
||
{"-", BINOP_SUB, PREC_ADD, 0},
|
||
{"*", BINOP_MUL, PREC_MUL, 0},
|
||
{"/", BINOP_DIV, PREC_MUL, 0},
|
||
{"%", BINOP_REM, PREC_MUL, 0},
|
||
{"@", BINOP_REPEAT, PREC_REPEAT, 0},
|
||
{"-", UNOP_NEG, PREC_PREFIX, 0},
|
||
{"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
|
||
{"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
|
||
{"*", UNOP_IND, PREC_PREFIX, 0},
|
||
{"&", UNOP_ADDR, PREC_PREFIX, 0},
|
||
{"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0},
|
||
{"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
|
||
{"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
|
||
{NULL, 0, 0, 0}
|
||
};
|
||
|
||
enum c_primitive_types {
|
||
c_primitive_type_int,
|
||
c_primitive_type_long,
|
||
c_primitive_type_short,
|
||
c_primitive_type_char,
|
||
c_primitive_type_float,
|
||
c_primitive_type_double,
|
||
c_primitive_type_void,
|
||
c_primitive_type_long_long,
|
||
c_primitive_type_signed_char,
|
||
c_primitive_type_unsigned_char,
|
||
c_primitive_type_unsigned_short,
|
||
c_primitive_type_unsigned_int,
|
||
c_primitive_type_unsigned_long,
|
||
c_primitive_type_unsigned_long_long,
|
||
c_primitive_type_long_double,
|
||
c_primitive_type_complex,
|
||
c_primitive_type_double_complex,
|
||
c_primitive_type_decfloat,
|
||
c_primitive_type_decdouble,
|
||
c_primitive_type_declong,
|
||
nr_c_primitive_types
|
||
};
|
||
|
||
void
|
||
c_language_arch_info (struct gdbarch *gdbarch,
|
||
struct language_arch_info *lai)
|
||
{
|
||
const struct builtin_type *builtin = builtin_type (gdbarch);
|
||
|
||
lai->string_char_type = builtin->builtin_char;
|
||
lai->primitive_type_vector
|
||
= GDBARCH_OBSTACK_CALLOC (gdbarch, nr_c_primitive_types + 1,
|
||
struct type *);
|
||
lai->primitive_type_vector [c_primitive_type_int] = builtin->builtin_int;
|
||
lai->primitive_type_vector [c_primitive_type_long] = builtin->builtin_long;
|
||
lai->primitive_type_vector [c_primitive_type_short] = builtin->builtin_short;
|
||
lai->primitive_type_vector [c_primitive_type_char] = builtin->builtin_char;
|
||
lai->primitive_type_vector [c_primitive_type_float] = builtin->builtin_float;
|
||
lai->primitive_type_vector [c_primitive_type_double] = builtin->builtin_double;
|
||
lai->primitive_type_vector [c_primitive_type_void] = builtin->builtin_void;
|
||
lai->primitive_type_vector [c_primitive_type_long_long] = builtin->builtin_long_long;
|
||
lai->primitive_type_vector [c_primitive_type_signed_char] = builtin->builtin_signed_char;
|
||
lai->primitive_type_vector [c_primitive_type_unsigned_char] = builtin->builtin_unsigned_char;
|
||
lai->primitive_type_vector [c_primitive_type_unsigned_short] = builtin->builtin_unsigned_short;
|
||
lai->primitive_type_vector [c_primitive_type_unsigned_int] = builtin->builtin_unsigned_int;
|
||
lai->primitive_type_vector [c_primitive_type_unsigned_long] = builtin->builtin_unsigned_long;
|
||
lai->primitive_type_vector [c_primitive_type_unsigned_long_long] = builtin->builtin_unsigned_long_long;
|
||
lai->primitive_type_vector [c_primitive_type_long_double] = builtin->builtin_long_double;
|
||
lai->primitive_type_vector [c_primitive_type_complex] = builtin->builtin_complex;
|
||
lai->primitive_type_vector [c_primitive_type_double_complex] = builtin->builtin_double_complex;
|
||
lai->primitive_type_vector [c_primitive_type_decfloat] = builtin->builtin_decfloat;
|
||
lai->primitive_type_vector [c_primitive_type_decdouble] = builtin->builtin_decdouble;
|
||
lai->primitive_type_vector [c_primitive_type_declong] = builtin->builtin_declong;
|
||
|
||
lai->bool_type_default = builtin->builtin_int;
|
||
}
|
||
|
||
const struct exp_descriptor exp_descriptor_c =
|
||
{
|
||
print_subexp_standard,
|
||
operator_length_standard,
|
||
operator_check_standard,
|
||
op_name_standard,
|
||
dump_subexp_body_standard,
|
||
evaluate_subexp_c
|
||
};
|
||
|
||
const struct language_defn c_language_defn =
|
||
{
|
||
"c", /* Language name */
|
||
language_c,
|
||
range_check_off,
|
||
type_check_off,
|
||
case_sensitive_on,
|
||
array_row_major,
|
||
macro_expansion_c,
|
||
&exp_descriptor_c,
|
||
c_parse,
|
||
c_error,
|
||
null_post_parser,
|
||
c_printchar, /* Print a character constant */
|
||
c_printstr, /* Function to print string constant */
|
||
c_emit_char, /* Print a single char */
|
||
c_print_type, /* Print a type using appropriate syntax */
|
||
c_print_typedef, /* Print a typedef using appropriate syntax */
|
||
c_val_print, /* Print a value using appropriate syntax */
|
||
c_value_print, /* Print a top-level value */
|
||
NULL, /* Language specific skip_trampoline */
|
||
NULL, /* name_of_this */
|
||
basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
|
||
basic_lookup_transparent_type,/* lookup_transparent_type */
|
||
NULL, /* Language specific symbol demangler */
|
||
NULL, /* Language specific class_name_from_physname */
|
||
c_op_print_tab, /* expression operators for printing */
|
||
1, /* c-style arrays */
|
||
0, /* String lower bound */
|
||
default_word_break_characters,
|
||
default_make_symbol_completion_list,
|
||
c_language_arch_info,
|
||
default_print_array_index,
|
||
default_pass_by_reference,
|
||
c_get_string,
|
||
LANG_MAGIC
|
||
};
|
||
|
||
enum cplus_primitive_types {
|
||
cplus_primitive_type_int,
|
||
cplus_primitive_type_long,
|
||
cplus_primitive_type_short,
|
||
cplus_primitive_type_char,
|
||
cplus_primitive_type_float,
|
||
cplus_primitive_type_double,
|
||
cplus_primitive_type_void,
|
||
cplus_primitive_type_long_long,
|
||
cplus_primitive_type_signed_char,
|
||
cplus_primitive_type_unsigned_char,
|
||
cplus_primitive_type_unsigned_short,
|
||
cplus_primitive_type_unsigned_int,
|
||
cplus_primitive_type_unsigned_long,
|
||
cplus_primitive_type_unsigned_long_long,
|
||
cplus_primitive_type_long_double,
|
||
cplus_primitive_type_complex,
|
||
cplus_primitive_type_double_complex,
|
||
cplus_primitive_type_bool,
|
||
cplus_primitive_type_decfloat,
|
||
cplus_primitive_type_decdouble,
|
||
cplus_primitive_type_declong,
|
||
nr_cplus_primitive_types
|
||
};
|
||
|
||
static void
|
||
cplus_language_arch_info (struct gdbarch *gdbarch,
|
||
struct language_arch_info *lai)
|
||
{
|
||
const struct builtin_type *builtin = builtin_type (gdbarch);
|
||
|
||
lai->string_char_type = builtin->builtin_char;
|
||
lai->primitive_type_vector
|
||
= GDBARCH_OBSTACK_CALLOC (gdbarch, nr_cplus_primitive_types + 1,
|
||
struct type *);
|
||
lai->primitive_type_vector [cplus_primitive_type_int]
|
||
= builtin->builtin_int;
|
||
lai->primitive_type_vector [cplus_primitive_type_long]
|
||
= builtin->builtin_long;
|
||
lai->primitive_type_vector [cplus_primitive_type_short]
|
||
= builtin->builtin_short;
|
||
lai->primitive_type_vector [cplus_primitive_type_char]
|
||
= builtin->builtin_char;
|
||
lai->primitive_type_vector [cplus_primitive_type_float]
|
||
= builtin->builtin_float;
|
||
lai->primitive_type_vector [cplus_primitive_type_double]
|
||
= builtin->builtin_double;
|
||
lai->primitive_type_vector [cplus_primitive_type_void]
|
||
= builtin->builtin_void;
|
||
lai->primitive_type_vector [cplus_primitive_type_long_long]
|
||
= builtin->builtin_long_long;
|
||
lai->primitive_type_vector [cplus_primitive_type_signed_char]
|
||
= builtin->builtin_signed_char;
|
||
lai->primitive_type_vector [cplus_primitive_type_unsigned_char]
|
||
= builtin->builtin_unsigned_char;
|
||
lai->primitive_type_vector [cplus_primitive_type_unsigned_short]
|
||
= builtin->builtin_unsigned_short;
|
||
lai->primitive_type_vector [cplus_primitive_type_unsigned_int]
|
||
= builtin->builtin_unsigned_int;
|
||
lai->primitive_type_vector [cplus_primitive_type_unsigned_long]
|
||
= builtin->builtin_unsigned_long;
|
||
lai->primitive_type_vector [cplus_primitive_type_unsigned_long_long]
|
||
= builtin->builtin_unsigned_long_long;
|
||
lai->primitive_type_vector [cplus_primitive_type_long_double]
|
||
= builtin->builtin_long_double;
|
||
lai->primitive_type_vector [cplus_primitive_type_complex]
|
||
= builtin->builtin_complex;
|
||
lai->primitive_type_vector [cplus_primitive_type_double_complex]
|
||
= builtin->builtin_double_complex;
|
||
lai->primitive_type_vector [cplus_primitive_type_bool]
|
||
= builtin->builtin_bool;
|
||
lai->primitive_type_vector [cplus_primitive_type_decfloat]
|
||
= builtin->builtin_decfloat;
|
||
lai->primitive_type_vector [cplus_primitive_type_decdouble]
|
||
= builtin->builtin_decdouble;
|
||
lai->primitive_type_vector [cplus_primitive_type_declong]
|
||
= builtin->builtin_declong;
|
||
|
||
lai->bool_type_symbol = "bool";
|
||
lai->bool_type_default = builtin->builtin_bool;
|
||
}
|
||
|
||
const struct language_defn cplus_language_defn =
|
||
{
|
||
"c++", /* Language name */
|
||
language_cplus,
|
||
range_check_off,
|
||
type_check_off,
|
||
case_sensitive_on,
|
||
array_row_major,
|
||
macro_expansion_c,
|
||
&exp_descriptor_c,
|
||
c_parse,
|
||
c_error,
|
||
null_post_parser,
|
||
c_printchar, /* Print a character constant */
|
||
c_printstr, /* Function to print string constant */
|
||
c_emit_char, /* Print a single char */
|
||
c_print_type, /* Print a type using appropriate syntax */
|
||
c_print_typedef, /* Print a typedef using appropriate syntax */
|
||
c_val_print, /* Print a value using appropriate syntax */
|
||
c_value_print, /* Print a top-level value */
|
||
cplus_skip_trampoline, /* Language specific skip_trampoline */
|
||
"this", /* name_of_this */
|
||
cp_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
|
||
cp_lookup_transparent_type, /* lookup_transparent_type */
|
||
cplus_demangle, /* Language specific symbol demangler */
|
||
cp_class_name_from_physname, /* Language specific class_name_from_physname */
|
||
c_op_print_tab, /* expression operators for printing */
|
||
1, /* c-style arrays */
|
||
0, /* String lower bound */
|
||
default_word_break_characters,
|
||
default_make_symbol_completion_list,
|
||
cplus_language_arch_info,
|
||
default_print_array_index,
|
||
cp_pass_by_reference,
|
||
c_get_string,
|
||
LANG_MAGIC
|
||
};
|
||
|
||
const struct language_defn asm_language_defn =
|
||
{
|
||
"asm", /* Language name */
|
||
language_asm,
|
||
range_check_off,
|
||
type_check_off,
|
||
case_sensitive_on,
|
||
array_row_major,
|
||
macro_expansion_c,
|
||
&exp_descriptor_c,
|
||
c_parse,
|
||
c_error,
|
||
null_post_parser,
|
||
c_printchar, /* Print a character constant */
|
||
c_printstr, /* Function to print string constant */
|
||
c_emit_char, /* Print a single char */
|
||
c_print_type, /* Print a type using appropriate syntax */
|
||
c_print_typedef, /* Print a typedef using appropriate syntax */
|
||
c_val_print, /* Print a value using appropriate syntax */
|
||
c_value_print, /* Print a top-level value */
|
||
NULL, /* Language specific skip_trampoline */
|
||
NULL, /* name_of_this */
|
||
basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
|
||
basic_lookup_transparent_type,/* lookup_transparent_type */
|
||
NULL, /* Language specific symbol demangler */
|
||
NULL, /* Language specific class_name_from_physname */
|
||
c_op_print_tab, /* expression operators for printing */
|
||
1, /* c-style arrays */
|
||
0, /* String lower bound */
|
||
default_word_break_characters,
|
||
default_make_symbol_completion_list,
|
||
c_language_arch_info, /* FIXME: la_language_arch_info. */
|
||
default_print_array_index,
|
||
default_pass_by_reference,
|
||
c_get_string,
|
||
LANG_MAGIC
|
||
};
|
||
|
||
/* The following language_defn does not represent a real language.
|
||
It just provides a minimal support a-la-C that should allow users
|
||
to do some simple operations when debugging applications that use
|
||
a language currently not supported by GDB. */
|
||
|
||
const struct language_defn minimal_language_defn =
|
||
{
|
||
"minimal", /* Language name */
|
||
language_minimal,
|
||
range_check_off,
|
||
type_check_off,
|
||
case_sensitive_on,
|
||
array_row_major,
|
||
macro_expansion_c,
|
||
&exp_descriptor_c,
|
||
c_parse,
|
||
c_error,
|
||
null_post_parser,
|
||
c_printchar, /* Print a character constant */
|
||
c_printstr, /* Function to print string constant */
|
||
c_emit_char, /* Print a single char */
|
||
c_print_type, /* Print a type using appropriate syntax */
|
||
c_print_typedef, /* Print a typedef using appropriate syntax */
|
||
c_val_print, /* Print a value using appropriate syntax */
|
||
c_value_print, /* Print a top-level value */
|
||
NULL, /* Language specific skip_trampoline */
|
||
NULL, /* name_of_this */
|
||
basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
|
||
basic_lookup_transparent_type,/* lookup_transparent_type */
|
||
NULL, /* Language specific symbol demangler */
|
||
NULL, /* Language specific class_name_from_physname */
|
||
c_op_print_tab, /* expression operators for printing */
|
||
1, /* c-style arrays */
|
||
0, /* String lower bound */
|
||
default_word_break_characters,
|
||
default_make_symbol_completion_list,
|
||
c_language_arch_info,
|
||
default_print_array_index,
|
||
default_pass_by_reference,
|
||
c_get_string,
|
||
LANG_MAGIC
|
||
};
|
||
|
||
void
|
||
_initialize_c_language (void)
|
||
{
|
||
add_language (&c_language_defn);
|
||
add_language (&cplus_language_defn);
|
||
add_language (&asm_language_defn);
|
||
add_language (&minimal_language_defn);
|
||
}
|