/* Support for printing Chill values for GDB, the GNU debugger.
Copyright 1986, 1988, 1989, 1991 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "defs.h"
#include "obstack.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "valprint.h"
#include "expression.h"
#include "value.h"
#include "language.h"
#include "demangle.h"
#include "c-lang.h" /* For c_val_print */
static void
chill_print_value_fields PARAMS ((struct type *, char *, FILE *, int, int,
enum val_prettyprint, struct type **));
/* Print data of type TYPE located at VALADDR (within GDB), which came from
the inferior at address ADDRESS, onto stdio stream STREAM according to
FORMAT (a letter or 0 for natural format). The data at VALADDR is in
target byte order.
If the data are a string pointer, returns the number of string characters
printed.
If DEREF_REF is nonzero, then dereference references, otherwise just print
them like pointers.
The PRETTY parameter controls prettyprinting. */
int
chill_val_print (type, valaddr, address, stream, format, deref_ref, recurse,
pretty)
struct type *type;
char *valaddr;
CORE_ADDR address;
FILE *stream;
int format;
int deref_ref;
int recurse;
enum val_prettyprint pretty;
{
LONGEST val;
unsigned int i = 0; /* Number of characters printed. */
struct type *elttype;
CORE_ADDR addr;
switch (TYPE_CODE (type))
{
case TYPE_CODE_ARRAY:
if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0)
{
if (prettyprint_arrays)
{
print_spaces_filtered (2 + 2 * recurse, stream);
}
fprintf_filtered (stream, "[");
val_print_array_elements (type, valaddr, address, stream, format,
deref_ref, recurse, pretty, 0);
fprintf_filtered (stream, "]");
}
else
{
error ("unimplemented in chill_val_print; unspecified array length");
}
break;
case TYPE_CODE_INT:
format = format ? format : output_format;
if (format)
{
print_scalar_formatted (valaddr, type, format, 0, stream);
}
else
{
val_print_type_code_int (type, valaddr, stream);
}
break;
case TYPE_CODE_CHAR:
format = format ? format : output_format;
if (format)
{
print_scalar_formatted (valaddr, type, format, 0, stream);
}
else
{
LA_PRINT_CHAR ((unsigned char) unpack_long (type, valaddr),
stream);
}
break;
case TYPE_CODE_FLT:
if (format)
{
print_scalar_formatted (valaddr, type, format, 0, stream);
}
else
{
print_floating (valaddr, type, stream);
}
break;
case TYPE_CODE_BOOL:
format = format ? format : output_format;
if (format)
{
print_scalar_formatted (valaddr, type, format, 0, stream);
}
else
{
val = unpack_long (builtin_type_chill_bool, valaddr);
fprintf_filtered (stream, val ? "TRUE" : "FALSE");
}
break;
case TYPE_CODE_UNDEF:
/* This happens (without TYPE_FLAG_STUB set) on systems which don't use
dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
and no complete type for struct foo in that file. */
fprintf_filtered (stream, "<incomplete type>");
break;
case TYPE_CODE_PTR:
if (format && format != 's')
{
print_scalar_formatted (valaddr, type, format, 0, stream);
break;
}
addr = unpack_pointer (type, valaddr);
elttype = TYPE_TARGET_TYPE (type);
if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
{
/* Try to print what function it points to. */
print_address_demangle (addr, stream, demangle);
/* Return value is irrelevant except for string pointers. */
return (0);
}
if (addressprint && format != 's')
{
fprintf_filtered (stream, "H'%lx", (unsigned long) addr);
}
/* For a pointer to char or unsigned char, also print the string
pointed to, unless pointer is null. */
if (TYPE_LENGTH (elttype) == 1
&& TYPE_CODE (elttype) == TYPE_CODE_CHAR
&& (format == 0 || format == 's')
&& addr != 0
&& /* If print_max is UINT_MAX, the alloca below will fail.
In that case don't try to print the string. */
print_max < UINT_MAX)
{
i = val_print_string (addr, 0, stream);
}
/* Return number of characters printed, plus one for the
terminating null if we have "reached the end". */
return (i + (print_max && i != print_max));
break;
case TYPE_CODE_STRING:
if (format && format != 's')
{
print_scalar_formatted (valaddr, type, format, 0, stream);
break;
}
if (addressprint && format != 's')
{
/* This used to say `addr', which is unset at this point.
Is `address' what is meant? */
fprintf_filtered (stream, "H'%lx ", (unsigned long) address);
}
i = TYPE_LENGTH (type);
LA_PRINT_STRING (stream, valaddr, i, 0);
/* Return number of characters printed, plus one for the terminating
null if we have "reached the end". */
return (i + (print_max && i != print_max));
break;
case TYPE_CODE_STRUCT:
chill_print_value_fields (type, valaddr, stream, format, recurse, pretty,
0);
break;
case TYPE_CODE_REF:
if (addressprint)
{
fprintf_filtered (stream, "LOC(H'%lx)",
unpack_long (builtin_type_int, valaddr));
if (deref_ref)
fputs_filtered (": ", stream);
}
/* De-reference the reference. */
if (deref_ref)
{
if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_UNDEF)
{
value deref_val =
value_at
(TYPE_TARGET_TYPE (type),
unpack_pointer (lookup_pointer_type (builtin_type_void),
valaddr));
val_print (VALUE_TYPE (deref_val),
VALUE_CONTENTS (deref_val),
VALUE_ADDRESS (deref_val), stream, format,
deref_ref, recurse + 1, pretty);
}
else
fputs_filtered ("???", stream);
}
break;
case TYPE_CODE_ENUM:
c_val_print (type, valaddr, address, stream, format,
deref_ref, recurse, pretty);
break;
case TYPE_CODE_MEMBER:
case TYPE_CODE_UNION:
case TYPE_CODE_FUNC:
case TYPE_CODE_VOID:
case TYPE_CODE_ERROR:
case TYPE_CODE_RANGE:
default:
/* Let's derfer printing to the C printer, rather than
print an error message. FIXME! */
c_val_print (type, valaddr, address, stream, format,
deref_ref, recurse, pretty);
}
fflush (stream);
return (0);
}
/* Mutually recursive subroutines of cplus_print_value and c_val_print to
print out a structure's fields: cp_print_value_fields and cplus_print_value.
TYPE, VALADDR, STREAM, RECURSE, and PRETTY have the
same meanings as in cplus_print_value and c_val_print.
DONT_PRINT is an array of baseclass types that we
should not print, or zero if called from top level. */
static void
chill_print_value_fields (type, valaddr, stream, format, recurse, pretty,
dont_print)
struct type *type;
char *valaddr;
FILE *stream;
int format;
int recurse;
enum val_prettyprint pretty;
struct type **dont_print;
{
int i, len;
int fields_seen = 0;
check_stub_type (type);
fprintf_filtered (stream, "[");
len = TYPE_NFIELDS (type);
if (len == 0)
{
fprintf_filtered (stream, "<No data fields>");
}
else
{
for (i = 0; i < len; i++)
{
if (fields_seen)
{
fprintf_filtered (stream, ", ");
}
fields_seen = 1;
if (pretty)
{
fprintf_filtered (stream, "\n");
print_spaces_filtered (2 + 2 * recurse, stream);
}
else
{
wrap_here (n_spaces (2 + 2 * recurse));
}
fputs_filtered (".", stream);
fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
language_chill, DMGL_NO_OPTS);
fputs_filtered (": ", stream);
if (TYPE_FIELD_PACKED (type, i))
{
value v;
/* Bitfields require special handling, especially due to byte
order problems. */
v = value_from_longest (TYPE_FIELD_TYPE (type, i),
unpack_field_as_long (type, valaddr, i));
chill_val_print (TYPE_FIELD_TYPE (type, i), VALUE_CONTENTS (v), 0,
stream, format, 0, recurse + 1, pretty);
}
else
{
chill_val_print (TYPE_FIELD_TYPE (type, i),
valaddr + TYPE_FIELD_BITPOS (type, i) / 8,
0, stream, format, 0, recurse + 1, pretty);
}
}
if (pretty)
{
fprintf_filtered (stream, "\n");
print_spaces_filtered (2 * recurse, stream);
}
}
fprintf_filtered (stream, "]");
}