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c4413e2c9b
constants with an explicit null byte terminator. OP_STRING is now used for real string types. * c-lang.c (builtin_type_*): Move declarations to lang.c since they are used by all languages. * c-lang.c (_initialize_c_language): Move initializations of builtin_type_* to lang.c. * c-typeprint.c (c_type_print_varspec_prefix, c_type_print_varspec_suffix): TYPE_CODE_PASCAL_ARRAY renamed to TYPE_CODE_STRING. * c-valprint.c (c_val_print): Change the way character arrays are printed as strings to be consistent with the way strings are printed when pointer-to-char types are dereferenced. Remove test of print_max before calling val_print_string, which now does it's own test. * eval.c (evaluate_subexp): Add case for OP_ARRAY. * expprint.c (print_subexp, dump_expression): Add case for OP_ARRAY. * expression.h (enum exp_opcode): Add OP_ARRAY and document. * gdbtypes.c (builtin_type_*): Add declarations moved from c-lang.c. * gdbtypes.c (create_string_type): New function to create real string types. * gdbtypes.c (recursive_dump_type): TYPE_CODE_PASCAL_ARRAY renamed to TYPE_CODE_STRING. * gdbtypes.c (_initialize_gdbtypes): Add initializations of builtin_type_* types moved from c-lang.c. * gdbtypes.h (enum type_code): TYPE_CODE_PASCAL_ARRAY renamed to TYPE_CODE_STRING. * gdbtypes.h (builtin_type_string): Add extern declaration. * gdbtypes.h (create_string_type): Add prototype. * m2-lang.c (m2_create_fundamental_type): TYPE_CODE_PASCAL_ARRAY renamed to TYPE_CODE_STRING. * m88k-tdep.c (pushed_size): TYPE_CODE_PASCAL_ARRAY renamed to TYPE_CODE_STRING. * mipsread.c (_initialize_mipsread): TYPE_CODE_PASCAL_ARRAY renamed to TYPE_CODE_STRING. * parse.c (length_of_subexp, prefixify_subexp): Add case for OP_ARRAY. * printcmd.c (print_formatted): Recognize TYPE_CODE_STRING. * typeprint.c (print_type_scalar): TYPE_CODE_PASCAL_ARRAY renamed to TYPE_CODE_STRING. * valops.c (allocate_space_in_inferior): New function and prototype, using code ripped out of value_string. * valops.c (value_string): Rewritten to use new function allocate_space_in_inferior, but temporarily disabled until some other support is in place. * valops.c (value_array): New function to create array constants. * valprint.c (val_print_string): Add comment to document use, complete rewrite to fix several small buglets. * value.h (value_array): Add prototype. * value.h (val_print_string): Change prototype to match rewrite. **** start-sanitize-chill **** * ch-valprint.c (chill_val_print): Add case for TYPE_CODE_STRING. * ch-exp.y (match_character_literal): Disable recognition of control sequence form of character literals and document why. **** end-sanitize-chill ****
306 lines
7.5 KiB
C
306 lines
7.5 KiB
C
/* Language independent support for printing types for GDB, the GNU debugger.
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Copyright 1986, 1988, 1989, 1991 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 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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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, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "defs.h"
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#include "obstack.h"
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#include "bfd.h" /* Binary File Description */
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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 "value.h"
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#include "gdbcore.h"
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#include "command.h"
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#include "gdbcmd.h"
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#include "target.h"
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#include "language.h"
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#include "demangle.h"
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#include <string.h>
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#include <errno.h>
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static void
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ptype_command PARAMS ((char *, int));
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static struct type *
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ptype_eval PARAMS ((struct expression *));
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static void
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whatis_command PARAMS ((char *, int));
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static void
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whatis_exp PARAMS ((char *, int));
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/* Print a description of a type TYPE in the form of a declaration of a
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variable named VARSTRING. (VARSTRING is demangled if necessary.)
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Output goes to STREAM (via stdio).
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If SHOW is positive, we show the contents of the outermost level
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of structure even if there is a type name that could be used instead.
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If SHOW is negative, we never show the details of elements' types. */
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void
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type_print (type, varstring, stream, show)
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struct type *type;
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char *varstring;
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FILE *stream;
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int show;
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{
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LA_PRINT_TYPE (type, varstring, stream, show, 0);
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}
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/* Print type of EXP, or last thing in value history if EXP == NULL.
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show is passed to type_print. */
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static void
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whatis_exp (exp, show)
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char *exp;
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int show;
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{
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struct expression *expr;
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register value val;
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register struct cleanup *old_chain;
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if (exp)
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{
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expr = parse_expression (exp);
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old_chain = make_cleanup (free_current_contents, &expr);
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val = evaluate_type (expr);
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}
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else
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val = access_value_history (0);
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printf_filtered ("type = ");
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type_print (VALUE_TYPE (val), "", stdout, show);
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printf_filtered ("\n");
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if (exp)
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do_cleanups (old_chain);
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}
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/* ARGSUSED */
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static void
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whatis_command (exp, from_tty)
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char *exp;
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int from_tty;
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{
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/* Most of the time users do not want to see all the fields
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in a structure. If they do they can use the "ptype" command.
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Hence the "-1" below. */
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whatis_exp (exp, -1);
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}
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/* Simple subroutine for ptype_command. */
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static struct type *
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ptype_eval (exp)
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struct expression *exp;
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{
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if (exp->elts[0].opcode == OP_TYPE)
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{
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return (exp->elts[1].type);
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}
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else
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{
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return (NULL);
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}
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}
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/* TYPENAME is either the name of a type, or an expression. */
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/* ARGSUSED */
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static void
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ptype_command (typename, from_tty)
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char *typename;
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int from_tty;
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{
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register struct type *type;
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struct expression *expr;
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register struct cleanup *old_chain;
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if (typename == NULL)
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{
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/* Print type of last thing in value history. */
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whatis_exp (typename, 1);
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}
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else
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{
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expr = parse_expression (typename);
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old_chain = make_cleanup (free_current_contents, &expr);
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type = ptype_eval (expr);
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if (type != NULL)
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{
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/* User did "ptype <typename>" */
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printf_filtered ("type = ");
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type_print (type, "", stdout, 1);
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printf_filtered ("\n");
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do_cleanups (old_chain);
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}
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else
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{
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/* User did "ptype <symbolname>" */
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do_cleanups (old_chain);
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whatis_exp (typename, 1);
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}
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}
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}
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/* Print integral scalar data VAL, of type TYPE, onto stdio stream STREAM.
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Used to print data from type structures in a specified type. For example,
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array bounds may be characters or booleans in some languages, and this
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allows the ranges to be printed in their "natural" form rather than as
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decimal integer values.
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FIXME: This is here simply because only the type printing routines
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currently use it, and it wasn't clear if it really belonged somewhere
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else (like printcmd.c). There are a lot of other gdb routines that do
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something similar, but they are generally concerned with printing values
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that come from the inferior in target byte order and target size. */
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void
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print_type_scalar (type, val, stream)
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struct type *type;
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LONGEST val;
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FILE *stream;
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{
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unsigned int i;
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unsigned len;
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switch (TYPE_CODE (type))
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{
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case TYPE_CODE_ENUM:
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len = TYPE_NFIELDS (type);
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for (i = 0; i < len; i++)
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{
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if (TYPE_FIELD_BITPOS (type, i) == val)
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{
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break;
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}
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}
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if (i < len)
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{
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fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
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}
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else
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{
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#ifdef LONG_LONG
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fprintf_filtered (stream, "%lld", val);
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#else
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fprintf_filtered (stream, "%ld", val);
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#endif
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}
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break;
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case TYPE_CODE_INT:
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#ifdef LONG_LONG
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fprintf_filtered (stream, TYPE_UNSIGNED (type) ? "%llu" : "%lld", val);
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#else
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fprintf_filtered (stream, TYPE_UNSIGNED (type) ? "%u" : "%d", val);
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#endif
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break;
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case TYPE_CODE_CHAR:
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LA_PRINT_CHAR ((unsigned char) val, stream);
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break;
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case TYPE_CODE_BOOL:
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fprintf_filtered (stream, val ? "TRUE" : "FALSE");
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break;
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case TYPE_CODE_UNDEF:
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case TYPE_CODE_PTR:
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case TYPE_CODE_ARRAY:
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case TYPE_CODE_STRUCT:
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case TYPE_CODE_UNION:
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case TYPE_CODE_FUNC:
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case TYPE_CODE_FLT:
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case TYPE_CODE_VOID:
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case TYPE_CODE_SET:
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case TYPE_CODE_RANGE:
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case TYPE_CODE_STRING:
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case TYPE_CODE_ERROR:
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case TYPE_CODE_MEMBER:
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case TYPE_CODE_METHOD:
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case TYPE_CODE_REF:
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error ("internal error: unhandled type in print_type_scalar");
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break;
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default:
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error ("Invalid type code in symbol table.");
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}
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fflush (stream);
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}
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#if MAINTENANCE_CMDS
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/* Dump details of a type specified either directly or indirectly.
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Uses the same sort of type lookup mechanism as ptype_command()
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and whatis_command(). */
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void
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maintenance_print_type (typename, from_tty)
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char *typename;
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int from_tty;
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{
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register value val;
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register struct type *type;
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register struct cleanup *old_chain;
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struct expression *expr;
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if (typename != NULL)
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{
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expr = parse_expression (typename);
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old_chain = make_cleanup (free_current_contents, &expr);
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if (expr -> elts[0].opcode == OP_TYPE)
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{
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/* The user expression names a type directly, just use that type. */
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type = expr -> elts[1].type;
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}
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else
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{
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/* The user expression may name a type indirectly by naming an
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object of that type. Find that indirectly named type. */
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val = evaluate_type (expr);
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type = VALUE_TYPE (val);
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}
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if (type != NULL)
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{
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recursive_dump_type (type, 0);
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}
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do_cleanups (old_chain);
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}
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}
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#endif /* MAINTENANCE_CMDS */
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void
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_initialize_typeprint ()
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{
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add_com ("ptype", class_vars, ptype_command,
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"Print definition of type TYPE.\n\
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Argument may be a type name defined by typedef, or \"struct STRUCTNAME\"\n\
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or \"union UNIONNAME\" or \"enum ENUMNAME\".\n\
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The selected stack frame's lexical context is used to look up the name.");
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add_com ("whatis", class_vars, whatis_command,
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"Print data type of expression EXP.");
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}
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