mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-11-25 05:00:01 +00:00
72019c9cbc
* gdb/m2-lang.h: added function extern prototypes for m2_is_long_set and get_long_set_bounds. * gm2/m2-typeprint.c: This file has been completely replaced to reflect the Modula-2 syntax rather than call the c_print_type function. (m2_print_type): walk the Modula-2 type tree. (m2_type_name): added. (m2_range): added. (m2_typedef): added. (m2_array): added. (m2_pointer): added. (m2_ref): added. (m2_unknown): added. (m2_union): added. (m2_procedure): added. (m2_print_bounds): added. (m2_short_set): added. (m2_is_long_set): added. (m2_get_discrete_bounds): added. (m2_is_long_set_of_type): added. (m2_long_set): added. (m2_record_fields): added. (m2_enum): added. * gdb/dwarf2read.c: added ability to detect the language Modula-2 and handle SET and CHAR types. (read_set_type): added. (process_die): call read_set_type. (read_base_type): modifed signed/unsigned char handling for Modula-2. (set_cu_language): added Modula-2 case clause. * gdb/m2-valprint.c: complete replacement so that Modula-2 values are printed rather than call the C language routines. (print_function_pointer_address): added. (get_long_set_bounds): added. (m2_print_long_set): added. (print_unpacked_pointer): added. (print_variable_at_address): added. (m2_val_print): replaced.
586 lines
16 KiB
C
586 lines
16 KiB
C
/* Support for printing Modula 2 values for GDB, the GNU debugger.
|
|
|
|
Copyright (C) 1986, 1988, 1989, 1991, 1992, 1996, 1998,
|
|
2000, 2005, 2006
|
|
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., 51 Franklin Street, Fifth Floor,
|
|
Boston, MA 02110-1301, USA. */
|
|
|
|
#include "defs.h"
|
|
#include "symtab.h"
|
|
#include "gdbtypes.h"
|
|
#include "expression.h"
|
|
#include "value.h"
|
|
#include "valprint.h"
|
|
#include "language.h"
|
|
#include "typeprint.h"
|
|
#include "c-lang.h"
|
|
#include "m2-lang.h"
|
|
#include "target.h"
|
|
|
|
int print_unpacked_pointer (struct type *type,
|
|
CORE_ADDR address, CORE_ADDR addr,
|
|
int format, struct ui_file *stream);
|
|
|
|
|
|
/* Print function pointer with inferior address ADDRESS onto stdio
|
|
stream STREAM. */
|
|
|
|
static void
|
|
print_function_pointer_address (CORE_ADDR address, struct ui_file *stream)
|
|
{
|
|
CORE_ADDR func_addr = gdbarch_convert_from_func_ptr_addr (current_gdbarch,
|
|
address,
|
|
¤t_target);
|
|
|
|
/* If the function pointer is represented by a description, print the
|
|
address of the description. */
|
|
if (addressprint && func_addr != address)
|
|
{
|
|
fputs_filtered ("@", stream);
|
|
fputs_filtered (paddress (address), stream);
|
|
fputs_filtered (": ", stream);
|
|
}
|
|
print_address_demangle (func_addr, stream, demangle);
|
|
}
|
|
|
|
/*
|
|
* get_long_set_bounds - assigns the bounds of the long set to low and high.
|
|
*/
|
|
|
|
int
|
|
get_long_set_bounds (struct type *type, LONGEST *low, LONGEST *high)
|
|
{
|
|
int len, i;
|
|
|
|
if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
|
|
{
|
|
len = TYPE_NFIELDS (type);
|
|
i = TYPE_N_BASECLASSES (type);
|
|
if (len == 0)
|
|
return 0;
|
|
*low = TYPE_LOW_BOUND (TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type, i)));
|
|
*high = TYPE_HIGH_BOUND (TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type,
|
|
len-1)));
|
|
return 1;
|
|
}
|
|
error (_("expecting long_set"));
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
m2_print_long_set (struct type *type, const gdb_byte *valaddr,
|
|
int embedded_offset, CORE_ADDR address,
|
|
struct ui_file *stream, int format,
|
|
enum val_prettyprint pretty)
|
|
{
|
|
int empty_set = 1;
|
|
int element_seen = 0;
|
|
LONGEST previous_low = 0;
|
|
LONGEST previous_high= 0;
|
|
LONGEST i, low_bound, high_bound;
|
|
LONGEST field_low, field_high;
|
|
struct type *range;
|
|
int len, field;
|
|
struct type *target;
|
|
int bitval;
|
|
|
|
CHECK_TYPEDEF (type);
|
|
|
|
fprintf_filtered (stream, "{");
|
|
len = TYPE_NFIELDS (type);
|
|
if (get_long_set_bounds (type, &low_bound, &high_bound))
|
|
{
|
|
field = TYPE_N_BASECLASSES (type);
|
|
range = TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type, field));
|
|
}
|
|
else
|
|
{
|
|
fprintf_filtered (stream, " %s }", _("<unknown bounds of set>"));
|
|
return;
|
|
}
|
|
|
|
target = TYPE_TARGET_TYPE (range);
|
|
if (target == NULL)
|
|
target = builtin_type_int;
|
|
|
|
if (get_discrete_bounds (range, &field_low, &field_high) >= 0)
|
|
{
|
|
for (i = low_bound; i <= high_bound; i++)
|
|
{
|
|
bitval = value_bit_index (TYPE_FIELD_TYPE (type, field),
|
|
(TYPE_FIELD_BITPOS (type, field) / 8) +
|
|
valaddr + embedded_offset, i);
|
|
if (bitval < 0)
|
|
error (_("bit test is out of range"));
|
|
else if (bitval > 0)
|
|
{
|
|
previous_high = i;
|
|
if (! element_seen)
|
|
{
|
|
if (! empty_set)
|
|
fprintf_filtered (stream, ", ");
|
|
print_type_scalar (target, i, stream);
|
|
empty_set = 0;
|
|
element_seen = 1;
|
|
previous_low = i;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* bit is not set */
|
|
if (element_seen)
|
|
{
|
|
if (previous_low+1 < previous_high)
|
|
fprintf_filtered (stream, "..");
|
|
if (previous_low+1 < previous_high)
|
|
print_type_scalar (target, previous_high, stream);
|
|
element_seen = 0;
|
|
}
|
|
}
|
|
if (i == field_high)
|
|
{
|
|
field++;
|
|
if (field == len)
|
|
break;
|
|
range = TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type, field));
|
|
if (get_discrete_bounds (range, &field_low, &field_high) < 0)
|
|
break;
|
|
target = TYPE_TARGET_TYPE (range);
|
|
if (target == NULL)
|
|
target = builtin_type_int;
|
|
}
|
|
}
|
|
if (element_seen)
|
|
{
|
|
if (previous_low+1 < previous_high)
|
|
{
|
|
fprintf_filtered (stream, "..");
|
|
print_type_scalar (target, previous_high, stream);
|
|
}
|
|
element_seen = 0;
|
|
}
|
|
fprintf_filtered (stream, "}");
|
|
}
|
|
}
|
|
|
|
int
|
|
print_unpacked_pointer (struct type *type,
|
|
CORE_ADDR address, CORE_ADDR addr,
|
|
int format, struct ui_file *stream)
|
|
{
|
|
struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));
|
|
|
|
if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
|
|
{
|
|
/* Try to print what function it points to. */
|
|
print_function_pointer_address (addr, stream);
|
|
/* Return value is irrelevant except for string pointers. */
|
|
return 0;
|
|
}
|
|
|
|
if (addressprint && format != 's')
|
|
fputs_filtered (paddress (address), 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_INT
|
|
&& (format == 0 || format == 's')
|
|
&& addr != 0)
|
|
return val_print_string (addr, -1, TYPE_LENGTH (elttype), stream);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
print_variable_at_address (struct type *type, const gdb_byte *valaddr,
|
|
struct ui_file *stream, int format,
|
|
int deref_ref, int recurse,
|
|
enum val_prettyprint pretty)
|
|
{
|
|
CORE_ADDR addr = unpack_pointer (type, valaddr);
|
|
struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));
|
|
|
|
fprintf_filtered (stream, "[");
|
|
fputs_filtered (paddress (addr), stream);
|
|
fprintf_filtered (stream, "] : ");
|
|
|
|
if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
|
|
{
|
|
struct value *deref_val =
|
|
value_at
|
|
(TYPE_TARGET_TYPE (type),
|
|
unpack_pointer (lookup_pointer_type (builtin_type_void),
|
|
valaddr));
|
|
common_val_print (deref_val, stream, format, deref_ref,
|
|
recurse, pretty);
|
|
}
|
|
else
|
|
fputs_filtered ("???", stream);
|
|
}
|
|
|
|
/* 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
|
|
m2_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset,
|
|
CORE_ADDR address, struct ui_file *stream, int format,
|
|
int deref_ref, int recurse, enum val_prettyprint pretty)
|
|
{
|
|
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 (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)))
|
|
&& (format == 0 || format == 's'))
|
|
{
|
|
/* If requested, look for the first null char and only print
|
|
elements up to it. */
|
|
if (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 < print_max;
|
|
temp_len++);
|
|
len = temp_len;
|
|
}
|
|
|
|
LA_PRINT_STRING (stream, valaddr + embedded_offset, len, 1, 0);
|
|
i = len;
|
|
}
|
|
else
|
|
{
|
|
fprintf_filtered (stream, "{");
|
|
val_print_array_elements (type, valaddr + embedded_offset,
|
|
address, stream, format, deref_ref,
|
|
recurse, pretty, 0);
|
|
fprintf_filtered (stream, "}");
|
|
}
|
|
break;
|
|
}
|
|
/* Array of unspecified length: treat like pointer to first elt. */
|
|
print_unpacked_pointer (type, address, address, format, stream);
|
|
break;
|
|
|
|
case TYPE_CODE_PTR:
|
|
if (TYPE_CONST (type))
|
|
print_variable_at_address (type, valaddr + embedded_offset,
|
|
stream, format, deref_ref, recurse,
|
|
pretty);
|
|
else if (format && format != 's')
|
|
print_scalar_formatted (valaddr + embedded_offset, type, format,
|
|
0, stream);
|
|
else
|
|
{
|
|
addr = unpack_pointer (type, valaddr + embedded_offset);
|
|
print_unpacked_pointer (type, addr, address, format, stream);
|
|
}
|
|
break;
|
|
|
|
case TYPE_CODE_MEMBER:
|
|
error (_("not implemented: member type in m2_val_print"));
|
|
break;
|
|
|
|
case TYPE_CODE_REF:
|
|
elttype = check_typedef (TYPE_TARGET_TYPE (type));
|
|
if (addressprint)
|
|
{
|
|
CORE_ADDR addr
|
|
= extract_typed_address (valaddr + embedded_offset, type);
|
|
fprintf_filtered (stream, "@");
|
|
fputs_filtered (paddress (addr), stream);
|
|
if (deref_ref)
|
|
fputs_filtered (": ", stream);
|
|
}
|
|
/* De-reference the reference. */
|
|
if (deref_ref)
|
|
{
|
|
if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
|
|
{
|
|
struct value *deref_val =
|
|
value_at
|
|
(TYPE_TARGET_TYPE (type),
|
|
unpack_pointer (lookup_pointer_type (builtin_type_void),
|
|
valaddr + embedded_offset));
|
|
common_val_print (deref_val, stream, format, deref_ref,
|
|
recurse, pretty);
|
|
}
|
|
else
|
|
fputs_filtered ("???", stream);
|
|
}
|
|
break;
|
|
|
|
case TYPE_CODE_UNION:
|
|
if (recurse && !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, format, pretty);
|
|
else
|
|
cp_print_value_fields (type, type, valaddr, embedded_offset,
|
|
address, stream, format,
|
|
recurse, pretty, NULL, 0);
|
|
break;
|
|
|
|
case TYPE_CODE_ENUM:
|
|
if (format)
|
|
{
|
|
print_scalar_formatted (valaddr + embedded_offset, type,
|
|
format, 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 (format)
|
|
{
|
|
print_scalar_formatted (valaddr + embedded_offset, type,
|
|
format, 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 (address, stream, demangle);
|
|
break;
|
|
|
|
case TYPE_CODE_BOOL:
|
|
format = format ? format : output_format;
|
|
if (format)
|
|
print_scalar_formatted (valaddr + embedded_offset, type,
|
|
format, 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, format, deref_ref, recurse, pretty);
|
|
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:
|
|
format = format ? format : output_format;
|
|
if (format)
|
|
print_scalar_formatted (valaddr + embedded_offset, type, format,
|
|
0, stream);
|
|
else
|
|
val_print_type_code_int (type, valaddr + embedded_offset, stream);
|
|
break;
|
|
|
|
case TYPE_CODE_CHAR:
|
|
format = format ? format : output_format;
|
|
if (format)
|
|
print_scalar_formatted (valaddr + embedded_offset, type,
|
|
format, 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, stream);
|
|
}
|
|
break;
|
|
|
|
case TYPE_CODE_FLT:
|
|
if (format)
|
|
print_scalar_formatted (valaddr + embedded_offset, type,
|
|
format, 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);
|
|
}
|