old-cross-binutils/gdb/ch-valprint.c
Jim Kingdon 61932a8ee9 * gdbtypes.h, ch-typeprint.c, ch-valprint.c:
Change comments regarding TYPE_CODE_BOOL.
	* language.c (boolean_type): Always return 1 for TYPE_CODE_BOOL,
	regardless of the language.
	(value_true): Just call value_logical_not regardless of language.
	* coffread.c (coff_read_enum_type), stabsread.c (read_enum_type):
	Remove #if 0'd code which makes some enums TYPE_CODE_BOOL.
	* language.h: Improve comment for la_builtin_type_vector.
	* m2-lang.c (_initialize_m2_language): Don't add any fields to
	builtin_type_m2_bool.
1994-02-02 17:20:45 +00:00

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/* Support for printing Chill values for GDB, the GNU debugger.
Copyright 1986, 1988, 1989, 1991, 1992, 1993, 1994
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 *, GDB_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;
GDB_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
{
/* FIXME: Why is this using builtin_type_chill_bool not type? */
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')
{
print_address_numeric (addr, stream);
}
/* 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;
}
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_BITSTRING:
case TYPE_CODE_SET:
{
struct type *range = TYPE_FIELD_TYPE (type, 0);
int low_bound = TYPE_LOW_BOUND (range);
int high_bound = TYPE_HIGH_BOUND (range);
int i;
int is_bitstring = TYPE_CODE (type) == TYPE_CODE_BITSTRING;
int need_comma = 0;
int in_range = 0;
if (is_bitstring)
fputs_filtered ("B'", stream);
else
fputs_filtered ("[", stream);
for (i = low_bound; i <= high_bound; i++)
{
int element = value_bit_index (type, valaddr, i);
if (is_bitstring)
fprintf_filtered (stream, "%d", element);
else if (element)
{
if (need_comma)
fputs_filtered (", ", stream);
print_type_scalar (TYPE_TARGET_TYPE (range), i, stream);
need_comma = 1;
/* Look for a continuous range of true elements. */
if (i+1 <= high_bound && value_bit_index (type, valaddr, ++i))
{
int j = i; /* j is the upper bound so far of the range */
fputs_filtered (":", stream);
while (i+1 <= high_bound
&& value_bit_index (type, valaddr, ++i))
j = i;
print_type_scalar (TYPE_TARGET_TYPE (range), j, stream);
}
}
}
if (is_bitstring)
fputs_filtered ("'", stream);
else
fputs_filtered ("]", stream);
}
break;
case TYPE_CODE_STRUCT:
if (chill_is_varying_struct (type))
{
struct type *inner = TYPE_FIELD_TYPE (type, 1);
long length = unpack_long (TYPE_FIELD_TYPE (type, 0), valaddr);
char *data_addr = valaddr + TYPE_FIELD_BITPOS (type, 1) / 8;
switch (TYPE_CODE (inner))
{
case TYPE_CODE_STRING:
if (length > TYPE_LENGTH (type))
{
fprintf_filtered (stream,
"<dynamic length %d > static length %d>",
length, TYPE_LENGTH (type));
length > TYPE_LENGTH (type);
}
LA_PRINT_STRING (stream, data_addr, length, 0);
return length;
}
}
chill_print_value_fields (type, valaddr, stream, format, recurse, pretty,
0);
break;
case TYPE_CODE_REF:
if (addressprint)
{
fprintf_filtered (stream, "LOC(");
print_address_numeric
(extract_address (valaddr, TARGET_PTR_BIT / HOST_CHAR_BIT),
stream);
fprintf_filtered (stream, ")");
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_RANGE:
if (TYPE_TARGET_TYPE (type))
chill_val_print (TYPE_TARGET_TYPE (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:
default:
/* Let's defer printing to the C printer, rather than
print an error message. FIXME! */
c_val_print (type, valaddr, address, stream, format,
deref_ref, recurse, pretty);
}
gdb_flush (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;
GDB_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, "]");
}