ea8c7ac7d0
This is a greatly pared down version of the full gdb-4.12, all the config stuff has been removed and the supporting libraries have been stripped to a minimum. This is a 1.1.5 only port, I'll do a more complete port for 2.0 which will have all the config stuff and will install the gnu support libraries as system libraries like we do for readline. There wasn't much point for 1.1.5 since only gdb would use them so I went for saving space instead. For 2.0 I'll config all the other gnu tools to use them as well.
333 lines
8.9 KiB
C
333 lines
8.9 KiB
C
/* Support for printing Chill values 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 "symtab.h"
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#include "gdbtypes.h"
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#include "valprint.h"
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#include "expression.h"
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#include "value.h"
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#include "language.h"
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#include "demangle.h"
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static void
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chill_print_value_fields PARAMS ((struct type *, char *, FILE *, int, int,
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enum val_prettyprint, struct type **));
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/* Print data of type TYPE located at VALADDR (within GDB), which came from
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the inferior at address ADDRESS, onto stdio stream STREAM according to
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FORMAT (a letter or 0 for natural format). The data at VALADDR is in
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target byte order.
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If the data are a string pointer, returns the number of string characters
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printed.
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If DEREF_REF is nonzero, then dereference references, otherwise just print
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them like pointers.
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The PRETTY parameter controls prettyprinting. */
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int
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chill_val_print (type, valaddr, address, stream, format, deref_ref, recurse,
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pretty)
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struct type *type;
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char *valaddr;
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CORE_ADDR address;
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FILE *stream;
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int format;
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int deref_ref;
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int recurse;
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enum val_prettyprint pretty;
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{
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LONGEST val;
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unsigned int i = 0; /* Number of characters printed. */
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struct type *elttype;
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CORE_ADDR addr;
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switch (TYPE_CODE (type))
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{
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case TYPE_CODE_ARRAY:
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if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0)
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{
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if (prettyprint_arrays)
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{
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print_spaces_filtered (2 + 2 * recurse, stream);
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}
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fprintf_filtered (stream, "[");
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val_print_array_elements (type, valaddr, address, stream, format,
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deref_ref, recurse, pretty, 0);
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fprintf_filtered (stream, "]");
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}
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else
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{
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error ("unimplemented in chill_val_print; unspecified array length");
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}
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break;
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case TYPE_CODE_INT:
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format = format ? format : output_format;
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if (format)
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{
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print_scalar_formatted (valaddr, type, format, 0, stream);
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}
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else
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{
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val_print_type_code_int (type, valaddr, stream);
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}
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break;
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case TYPE_CODE_CHAR:
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format = format ? format : output_format;
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if (format)
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{
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print_scalar_formatted (valaddr, type, format, 0, stream);
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}
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else
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{
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LA_PRINT_CHAR ((unsigned char) unpack_long (type, valaddr),
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stream);
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}
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break;
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case TYPE_CODE_FLT:
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if (format)
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{
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print_scalar_formatted (valaddr, type, format, 0, stream);
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}
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else
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{
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print_floating (valaddr, type, stream);
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}
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break;
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case TYPE_CODE_BOOL:
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format = format ? format : output_format;
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if (format)
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{
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print_scalar_formatted (valaddr, type, format, 0, stream);
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}
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else
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{
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val = unpack_long (builtin_type_chill_bool, valaddr);
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fprintf_filtered (stream, val ? "TRUE" : "FALSE");
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}
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break;
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case TYPE_CODE_UNDEF:
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/* This happens (without TYPE_FLAG_STUB set) on systems which don't use
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dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
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and no complete type for struct foo in that file. */
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fprintf_filtered (stream, "<incomplete type>");
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break;
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case TYPE_CODE_PTR:
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if (format && format != 's')
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{
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print_scalar_formatted (valaddr, type, format, 0, stream);
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break;
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}
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addr = unpack_pointer (type, valaddr);
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elttype = TYPE_TARGET_TYPE (type);
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if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
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{
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/* Try to print what function it points to. */
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print_address_demangle (addr, stream, demangle);
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/* Return value is irrelevant except for string pointers. */
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return (0);
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}
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if (addressprint && format != 's')
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{
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fprintf_filtered (stream, "H'%lx", (unsigned long) addr);
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}
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/* For a pointer to char or unsigned char, also print the string
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pointed to, unless pointer is null. */
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if (TYPE_LENGTH (elttype) == 1
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&& TYPE_CODE (elttype) == TYPE_CODE_CHAR
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&& (format == 0 || format == 's')
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&& addr != 0
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&& /* If print_max is UINT_MAX, the alloca below will fail.
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In that case don't try to print the string. */
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print_max < UINT_MAX)
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{
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i = val_print_string (addr, 0, stream);
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}
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/* Return number of characters printed, plus one for the
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terminating null if we have "reached the end". */
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return (i + (print_max && i != print_max));
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break;
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case TYPE_CODE_STRING:
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if (format && format != 's')
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{
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print_scalar_formatted (valaddr, type, format, 0, stream);
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break;
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}
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if (addressprint && format != 's')
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{
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/* This used to say `addr', which is unset at this point.
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Is `address' what is meant? */
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fprintf_filtered (stream, "H'%lx ", (unsigned long) address);
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}
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i = TYPE_LENGTH (type);
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LA_PRINT_STRING (stream, valaddr, i, 0);
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/* Return number of characters printed, plus one for the terminating
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null if we have "reached the end". */
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return (i + (print_max && i != print_max));
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break;
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case TYPE_CODE_STRUCT:
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chill_print_value_fields (type, valaddr, stream, format, recurse, pretty,
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0);
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break;
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case TYPE_CODE_REF:
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if (addressprint)
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{
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fprintf_filtered (stream, "LOC(H'%lx)",
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unpack_long (builtin_type_int, valaddr));
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if (deref_ref)
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fputs_filtered (": ", stream);
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}
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/* De-reference the reference. */
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if (deref_ref)
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{
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if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_UNDEF)
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{
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value deref_val =
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value_at
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(TYPE_TARGET_TYPE (type),
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unpack_pointer (lookup_pointer_type (builtin_type_void),
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valaddr));
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val_print (VALUE_TYPE (deref_val),
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VALUE_CONTENTS (deref_val),
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VALUE_ADDRESS (deref_val), stream, format,
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deref_ref, recurse + 1, pretty);
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}
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else
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fputs_filtered ("???", stream);
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}
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break;
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case TYPE_CODE_ENUM:
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c_val_print (type, valaddr, address, stream, format,
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deref_ref, recurse, pretty);
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break;
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case TYPE_CODE_MEMBER:
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case TYPE_CODE_UNION:
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case TYPE_CODE_FUNC:
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case TYPE_CODE_VOID:
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case TYPE_CODE_ERROR:
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case TYPE_CODE_RANGE:
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default:
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/* Let's derfer printing to the C printer, rather than
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print an error message. FIXME! */
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c_val_print (type, valaddr, address, stream, format,
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deref_ref, recurse, pretty);
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}
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fflush (stream);
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return (0);
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}
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/* Mutually recursive subroutines of cplus_print_value and c_val_print to
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print out a structure's fields: cp_print_value_fields and cplus_print_value.
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TYPE, VALADDR, STREAM, RECURSE, and PRETTY have the
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same meanings as in cplus_print_value and c_val_print.
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DONT_PRINT is an array of baseclass types that we
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should not print, or zero if called from top level. */
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static void
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chill_print_value_fields (type, valaddr, stream, format, recurse, pretty,
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dont_print)
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struct type *type;
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char *valaddr;
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FILE *stream;
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int format;
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int recurse;
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enum val_prettyprint pretty;
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struct type **dont_print;
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{
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int i, len;
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int fields_seen = 0;
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check_stub_type (type);
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fprintf_filtered (stream, "[");
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len = TYPE_NFIELDS (type);
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if (len == 0)
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{
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fprintf_filtered (stream, "<No data fields>");
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}
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else
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{
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for (i = 0; i < len; i++)
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{
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if (fields_seen)
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{
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fprintf_filtered (stream, ", ");
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}
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fields_seen = 1;
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if (pretty)
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{
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fprintf_filtered (stream, "\n");
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print_spaces_filtered (2 + 2 * recurse, stream);
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}
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else
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{
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wrap_here (n_spaces (2 + 2 * recurse));
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}
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fputs_filtered (".", stream);
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fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
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language_chill, DMGL_NO_OPTS);
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fputs_filtered (": ", stream);
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if (TYPE_FIELD_PACKED (type, i))
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{
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value v;
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/* Bitfields require special handling, especially due to byte
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order problems. */
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v = value_from_longest (TYPE_FIELD_TYPE (type, i),
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unpack_field_as_long (type, valaddr, i));
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chill_val_print (TYPE_FIELD_TYPE (type, i), VALUE_CONTENTS (v), 0,
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stream, format, 0, recurse + 1, pretty);
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}
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else
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{
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chill_val_print (TYPE_FIELD_TYPE (type, i),
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valaddr + TYPE_FIELD_BITPOS (type, i) / 8,
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0, stream, format, 0, recurse + 1, pretty);
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}
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}
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if (pretty)
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{
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fprintf_filtered (stream, "\n");
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print_spaces_filtered (2 * recurse, stream);
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}
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}
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fprintf_filtered (stream, "]");
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}
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