332 lines
8.9 KiB
C
332 lines
8.9 KiB
C
/* 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"
|
||
|
||
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'%x", 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'%x ", 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, "]");
|
||
}
|
||
|