static int
m2_unbounded_array (struct type *type, struct ui_file *stream, int show,
int level, const struct type_print_options *flags)
{
if (m2_is_unbounded_array (type))
{
if (show > 0)
{
fputs_filtered ("ARRAY OF ", stream);
m2_print_type (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0)),
"", stream, 0, level, flags);
}
return 1;
}
return 0;
}
void
m2_val_print (struct type *type, int embedded_offset,
CORE_ADDR address, struct ui_file *stream, int recurse,
struct value *original_value,
const struct value_print_options *options)
{
struct gdbarch *gdbarch = get_type_arch (type);
unsigned len;
struct type *elttype;
CORE_ADDR addr;
const gdb_byte *valaddr = value_contents_for_printing (original_value);
type = check_typedef (type);
switch (TYPE_CODE (type))
{
case TYPE_CODE_ARRAY:
if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0)
{
elttype = check_typedef (TYPE_TARGET_TYPE (type));
len = TYPE_LENGTH (type) / TYPE_LENGTH (elttype);
if (options->prettyformat_arrays)
print_spaces_filtered (2 + 2 * recurse, stream);
/* For an array of chars, print with string syntax. */
if (TYPE_LENGTH (elttype) == 1 &&
((TYPE_CODE (elttype) == TYPE_CODE_INT)
|| ((current_language->la_language == language_m2)
&& (TYPE_CODE (elttype) == TYPE_CODE_CHAR)))
&& (options->format == 0 || options->format == 's'))
{
/* If requested, look for the first null char and only print
elements up to it. */
if (options->stop_print_at_null)
{
unsigned int temp_len;
/* Look for a NULL char. */
for (temp_len = 0;
(valaddr + embedded_offset)[temp_len]
&& temp_len < len && temp_len < options->print_max;
temp_len++);
len = temp_len;
}
LA_PRINT_STRING (stream, TYPE_TARGET_TYPE (type),
valaddr + embedded_offset, len, NULL,
0, options);
}
else
{
fprintf_filtered (stream, "{");
val_print_array_elements (type, embedded_offset,
address, stream,
recurse, original_value,
options, 0);
fprintf_filtered (stream, "}");
}
break;
}
/* Array of unspecified length: treat like pointer to first elt. */
print_unpacked_pointer (type, address, address, options, stream);
break;
case TYPE_CODE_PTR:
if (TYPE_CONST (type))
print_variable_at_address (type, valaddr + embedded_offset,
stream, recurse, options);
else if (options->format && options->format != 's')
val_print_scalar_formatted (type, embedded_offset,
original_value, options, 0, stream);
else
{
addr = unpack_pointer (type, valaddr + embedded_offset);
print_unpacked_pointer (type, addr, address, options, stream);
}
break;
case TYPE_CODE_UNION:
if (recurse && !options->unionprint)
{
fprintf_filtered (stream, "{...}");
break;
}
/* Fall through. */
case TYPE_CODE_STRUCT:
if (m2_is_long_set (type))
m2_print_long_set (type, valaddr, embedded_offset, address,
stream);
else if (m2_is_unbounded_array (type))
m2_print_unbounded_array (type, valaddr, embedded_offset,
address, stream, recurse, options);
else
cp_print_value_fields (type, type, embedded_offset,
address, stream, recurse, original_value,
options, NULL, 0);
break;
case TYPE_CODE_SET:
elttype = TYPE_INDEX_TYPE (type);
elttype = check_typedef (elttype);
if (TYPE_STUB (elttype))
{
fprintf_filtered (stream, _("<incomplete type>"));
gdb_flush (stream);
break;
}
else
{
struct type *range = elttype;
LONGEST low_bound, high_bound;
int i;
int need_comma = 0;
fputs_filtered ("{", stream);
i = get_discrete_bounds (range, &low_bound, &high_bound);
maybe_bad_bstring:
if (i < 0)
{
fputs_filtered (_("<error value>"), stream);
goto done;
}
for (i = low_bound; i <= high_bound; i++)
{
int element = value_bit_index (type, valaddr + embedded_offset,
i);
if (element < 0)
{
i = element;
goto maybe_bad_bstring;
}
if (element)
{
if (need_comma)
fputs_filtered (", ", stream);
print_type_scalar (range, i, stream);
need_comma = 1;
if (i + 1 <= high_bound
&& value_bit_index (type, valaddr + embedded_offset,
++i))
{
int j = i;
fputs_filtered ("..", stream);
while (i + 1 <= high_bound
&& value_bit_index (type,
valaddr + embedded_offset,
++i))
j = i;
print_type_scalar (range, j, stream);
}
}
}
done:
fputs_filtered ("}", stream);
}
break;
case TYPE_CODE_RANGE:
if (TYPE_LENGTH (type) == TYPE_LENGTH (TYPE_TARGET_TYPE (type)))
{
m2_val_print (TYPE_TARGET_TYPE (type), embedded_offset,
address, stream, recurse, original_value, options);
break;
}
/* FIXME: create_static_range_type does not set the unsigned bit in a
range type (I think it probably should copy it from the target
type), so we won't print values which are too large to
fit in a signed integer correctly. */
/* FIXME: Doesn't handle ranges of enums correctly. (Can't just
print with the target type, though, because the size of our type
and the target type might differ). */
/* FALLTHROUGH */
case TYPE_CODE_REF:
case TYPE_CODE_ENUM:
case TYPE_CODE_FUNC:
case TYPE_CODE_INT:
case TYPE_CODE_FLT:
case TYPE_CODE_METHOD:
case TYPE_CODE_VOID:
case TYPE_CODE_ERROR:
case TYPE_CODE_UNDEF:
case TYPE_CODE_BOOL:
case TYPE_CODE_CHAR:
default:
generic_val_print (type, embedded_offset, address,
stream, recurse, original_value, options,
&m2_decorations);
break;
}
gdb_flush (stream);
}
static struct value *
evaluate_subexp_modula2 (struct type *expect_type, struct expression *exp,
int *pos, enum noside noside)
{
enum exp_opcode op = exp->elts[*pos].opcode;
struct value *arg1;
struct value *arg2;
struct type *type;
switch (op)
{
case UNOP_HIGH:
(*pos)++;
arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS)
return arg1;
else
{
arg1 = coerce_ref (arg1);
type = check_typedef (value_type (arg1));
if (m2_is_unbounded_array (type))
{
struct value *temp = arg1;
type = TYPE_FIELD_TYPE (type, 1);
/* i18n: Do not translate the "_m2_high" part! */
arg1 = value_struct_elt (&temp, NULL, "_m2_high", NULL,
_("unbounded structure "
"missing _m2_high field"));
if (value_type (arg1) != type)
arg1 = value_cast (type, arg1);
}
}
return arg1;
case BINOP_SUBSCRIPT:
(*pos)++;
arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
arg2 = evaluate_subexp_with_coercion (exp, pos, noside);
if (noside == EVAL_SKIP)
goto nosideret;
/* If the user attempts to subscript something that is not an
array or pointer type (like a plain int variable for example),
then report this as an error. */
arg1 = coerce_ref (arg1);
type = check_typedef (value_type (arg1));
if (m2_is_unbounded_array (type))
{
struct value *temp = arg1;
type = TYPE_FIELD_TYPE (type, 0);
if (type == NULL || (TYPE_CODE (type) != TYPE_CODE_PTR))
{
warning (_("internal error: unbounded "
"array structure is unknown"));
return evaluate_subexp_standard (expect_type, exp, pos, noside);
}
/* i18n: Do not translate the "_m2_contents" part! */
arg1 = value_struct_elt (&temp, NULL, "_m2_contents", NULL,
_("unbounded structure "
"missing _m2_contents field"));
if (value_type (arg1) != type)
arg1 = value_cast (type, arg1);
check_typedef (value_type (arg1));
return value_ind (value_ptradd (arg1, value_as_long (arg2)));
}
else
if (TYPE_CODE (type) != TYPE_CODE_ARRAY)
{
if (TYPE_NAME (type))
error (_("cannot subscript something of type `%s'"),
TYPE_NAME (type));
else
error (_("cannot subscript requested type"));
}
if (noside == EVAL_AVOID_SIDE_EFFECTS)
return value_zero (TYPE_TARGET_TYPE (type), VALUE_LVAL (arg1));
else
return value_subscript (arg1, value_as_long (arg2));
default:
return evaluate_subexp_standard (expect_type, exp, pos, noside);
}
nosideret:
return value_from_longest (builtin_type (exp->gdbarch)->builtin_int, 1);
}
int
m2_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset,
CORE_ADDR address, struct ui_file *stream, int recurse,
const struct value_print_options *options)
{
struct gdbarch *gdbarch = get_type_arch (type);
unsigned int i = 0; /* Number of characters printed */
unsigned len;
struct type *elttype;
unsigned eltlen;
int length_pos, length_size, string_pos;
int char_size;
LONGEST val;
CORE_ADDR addr;
CHECK_TYPEDEF (type);
switch (TYPE_CODE (type))
{
case TYPE_CODE_ARRAY:
if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0)
{
elttype = check_typedef (TYPE_TARGET_TYPE (type));
eltlen = TYPE_LENGTH (elttype);
len = TYPE_LENGTH (type) / eltlen;
if (options->prettyprint_arrays)
print_spaces_filtered (2 + 2 * recurse, stream);
/* For an array of chars, print with string syntax. */
if (eltlen == 1 &&
((TYPE_CODE (elttype) == TYPE_CODE_INT)
|| ((current_language->la_language == language_m2)
&& (TYPE_CODE (elttype) == TYPE_CODE_CHAR)))
&& (options->format == 0 || options->format == 's'))
{
/* If requested, look for the first null char and only print
elements up to it. */
if (options->stop_print_at_null)
{
unsigned int temp_len;
/* Look for a NULL char. */
for (temp_len = 0;
(valaddr + embedded_offset)[temp_len]
&& temp_len < len && temp_len < options->print_max;
temp_len++);
len = temp_len;
}
LA_PRINT_STRING (stream, TYPE_TARGET_TYPE (type),
valaddr + embedded_offset, len, NULL,
0, options);
i = len;
}
else
{
fprintf_filtered (stream, "{");
val_print_array_elements (type, valaddr + embedded_offset,
address, stream, recurse, options, 0);
fprintf_filtered (stream, "}");
}
break;
}
/* Array of unspecified length: treat like pointer to first elt. */
print_unpacked_pointer (type, address, address, options, stream);
break;
case TYPE_CODE_PTR:
if (TYPE_CONST (type))
print_variable_at_address (type, valaddr + embedded_offset,
stream, recurse, options);
else if (options->format && options->format != 's')
print_scalar_formatted (valaddr + embedded_offset, type,
options, 0, stream);
else
{
addr = unpack_pointer (type, valaddr + embedded_offset);
print_unpacked_pointer (type, addr, address, options, stream);
}
break;
case TYPE_CODE_REF:
elttype = check_typedef (TYPE_TARGET_TYPE (type));
if (options->addressprint)
{
CORE_ADDR addr
= extract_typed_address (valaddr + embedded_offset, type);
fprintf_filtered (stream, "@");
fputs_filtered (paddress (gdbarch, addr), stream);
if (options->deref_ref)
fputs_filtered (": ", stream);
}
/* De-reference the reference. */
if (options->deref_ref)
{
if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
{
struct value *deref_val =
value_at
(TYPE_TARGET_TYPE (type),
unpack_pointer (type, valaddr + embedded_offset));
common_val_print (deref_val, stream, recurse, options,
current_language);
}
else
fputs_filtered ("???", stream);
}
break;
case TYPE_CODE_UNION:
if (recurse && !options->unionprint)
{
fprintf_filtered (stream, "{...}");
break;
}
/* Fall through. */
case TYPE_CODE_STRUCT:
if (m2_is_long_set (type))
m2_print_long_set (type, valaddr, embedded_offset, address,
stream);
else if (m2_is_unbounded_array (type))
m2_print_unbounded_array (type, valaddr, embedded_offset,
address, stream, recurse, options);
else
cp_print_value_fields (type, type, valaddr, embedded_offset,
address, stream, recurse, options, NULL, 0);
break;
case TYPE_CODE_ENUM:
if (options->format)
{
print_scalar_formatted (valaddr + embedded_offset, type,
options, 0, stream);
break;
}
len = TYPE_NFIELDS (type);
val = unpack_long (type, valaddr + embedded_offset);
for (i = 0; i < len; i++)
{
QUIT;
if (val == TYPE_FIELD_BITPOS (type, i))
{
break;
}
}
if (i < len)
{
fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
}
else
{
print_longest (stream, 'd', 0, val);
}
break;
case TYPE_CODE_FUNC:
if (options->format)
{
print_scalar_formatted (valaddr + embedded_offset, type,
options, 0, stream);
break;
}
/* FIXME, we should consider, at least for ANSI C language, eliminating
the distinction made between FUNCs and POINTERs to FUNCs. */
fprintf_filtered (stream, "{");
type_print (type, "", stream, -1);
fprintf_filtered (stream, "} ");
/* Try to print what function it points to, and its address. */
print_address_demangle (gdbarch, address, stream, demangle);
break;
case TYPE_CODE_BOOL:
if (options->format || options->output_format)
{
struct value_print_options opts = *options;
opts.format = (options->format ? options->format
: options->output_format);
print_scalar_formatted (valaddr + embedded_offset, type,
&opts, 0, stream);
}
else
{
val = unpack_long (type, valaddr + embedded_offset);
if (val == 0)
fputs_filtered ("FALSE", stream);
else if (val == 1)
fputs_filtered ("TRUE", stream);
else
fprintf_filtered (stream, "%ld)", (long int) val);
}
break;
case TYPE_CODE_RANGE:
if (TYPE_LENGTH (type) == TYPE_LENGTH (TYPE_TARGET_TYPE (type)))
{
m2_val_print (TYPE_TARGET_TYPE (type), valaddr, embedded_offset,
address, stream, recurse, options);
break;
}
/* FIXME: create_range_type does not set the unsigned bit in a
range type (I think it probably should copy it from the target
type), so we won't print values which are too large to
fit in a signed integer correctly. */
/* FIXME: Doesn't handle ranges of enums correctly. (Can't just
print with the target type, though, because the size of our type
and the target type might differ). */
/* FALLTHROUGH */
case TYPE_CODE_INT:
if (options->format || options->output_format)
{
struct value_print_options opts = *options;
opts.format = (options->format ? options->format
: options->output_format);
print_scalar_formatted (valaddr + embedded_offset, type,
&opts, 0, stream);
}
else
val_print_type_code_int (type, valaddr + embedded_offset, stream);
break;
case TYPE_CODE_CHAR:
if (options->format || options->output_format)
{
struct value_print_options opts = *options;
opts.format = (options->format ? options->format
: options->output_format);
print_scalar_formatted (valaddr + embedded_offset, type,
&opts, 0, stream);
}
else
{
val = unpack_long (type, valaddr + embedded_offset);
if (TYPE_UNSIGNED (type))
fprintf_filtered (stream, "%u", (unsigned int) val);
else
fprintf_filtered (stream, "%d", (int) val);
fputs_filtered (" ", stream);
LA_PRINT_CHAR ((unsigned char) val, type, stream);
}
break;
case TYPE_CODE_FLT:
if (options->format)
print_scalar_formatted (valaddr + embedded_offset, type,
options, 0, stream);
else
print_floating (valaddr + embedded_offset, type, stream);
break;
case TYPE_CODE_METHOD:
break;
case TYPE_CODE_BITSTRING:
case TYPE_CODE_SET:
elttype = TYPE_INDEX_TYPE (type);
CHECK_TYPEDEF (elttype);
if (TYPE_STUB (elttype))
{
fprintf_filtered (stream, _("<incomplete type>"));
gdb_flush (stream);
break;
}
else
{
struct type *range = elttype;
LONGEST low_bound, high_bound;
int i;
int is_bitstring = TYPE_CODE (type) == TYPE_CODE_BITSTRING;
int need_comma = 0;
if (is_bitstring)
fputs_filtered ("B'", stream);
else
fputs_filtered ("{", stream);
i = get_discrete_bounds (range, &low_bound, &high_bound);
maybe_bad_bstring:
if (i < 0)
{
fputs_filtered (_("<error value>"), stream);
goto done;
}
for (i = low_bound; i <= high_bound; i++)
{
int element = value_bit_index (type, valaddr + embedded_offset,
i);
if (element < 0)
{
i = element;
goto maybe_bad_bstring;
}
if (is_bitstring)
fprintf_filtered (stream, "%d", element);
else if (element)
{
if (need_comma)
fputs_filtered (", ", stream);
print_type_scalar (range, i, stream);
need_comma = 1;
if (i + 1 <= high_bound
&& value_bit_index (type, valaddr + embedded_offset,
++i))
{
int j = i;
fputs_filtered ("..", stream);
while (i + 1 <= high_bound
&& value_bit_index (type,
valaddr + embedded_offset,
++i))
j = i;
print_type_scalar (range, j, stream);
}
}
}
done:
if (is_bitstring)
fputs_filtered ("'", stream);
else
fputs_filtered ("}", stream);
}
break;
case TYPE_CODE_VOID:
fprintf_filtered (stream, "void");
break;
case TYPE_CODE_ERROR:
fprintf_filtered (stream, _("<error type>"));
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;
default:
error (_("Invalid m2 type code %d in symbol table."), TYPE_CODE (type));
}
gdb_flush (stream);
return (0);
}
