/* Support for printing Pascal values for GDB, the GNU debugger.
- Copyright (C) 2000, 2001, 2003, 2005, 2006, 2007, 2008, 2009, 2010, 2011
- Free Software Foundation, Inc.
+ Copyright (C) 2000-2001, 2003, 2005-2012 Free Software Foundation,
+ Inc.
This file is part of GDB.
#include "p-lang.h"
#include "cp-abi.h"
#include "cp-support.h"
+#include "exceptions.h"
\f
+/* Decorations for Pascal. */
+static const struct generic_val_print_decorations p_decorations =
+{
+ "",
+ " + ",
+ " * I",
+ "true",
+ "false",
+ "void"
+};
-/* Print data of type TYPE located at VALADDR (within GDB), which came from
- the inferior at address ADDRESS, onto stdio stream STREAM according to
- OPTIONS. The data at VALADDR is in target byte order.
-
- If the data are a string pointer, returns the number of string characters
- printed. */
-
+/* See val_print for a description of the various parameters of this
+ function; they are identical. */
-int
+void
pascal_val_print (struct type *type, const gdb_byte *valaddr,
int embedded_offset, CORE_ADDR address,
struct ui_file *stream, int recurse,
unsigned eltlen;
int length_pos, length_size, string_pos;
struct type *char_type;
- LONGEST val;
CORE_ADDR addr;
+ int want_space = 0;
CHECK_TYPEDEF (type);
switch (TYPE_CODE (type))
{
case TYPE_CODE_ARRAY:
- if (get_array_bounds (type, &low_bound, &high_bound))
+ if (get_array_bounds (type, &low_bound, &high_bound))
{
len = high_bound - low_bound + 1;
elttype = check_typedef (TYPE_TARGET_TYPE (type));
{
unsigned int temp_len;
- /* Look for a NULL char. */
+ /* Look for a NULL char. */
for (temp_len = 0;
extract_unsigned_integer (valaddr + embedded_offset +
temp_len * eltlen, eltlen,
{
i = 0;
}
- val_print_array_elements (type, valaddr + embedded_offset,
+ val_print_array_elements (type, valaddr, embedded_offset,
address, stream, recurse,
original_value, options, i);
fprintf_filtered (stream, "}");
break;
}
/* Array of unspecified length: treat like pointer to first elt. */
- addr = address;
+ addr = address + embedded_offset;
goto print_unpacked_pointer;
case TYPE_CODE_PTR:
if (options->format && options->format != 's')
{
- print_scalar_formatted (valaddr + embedded_offset, type,
- options, 0, stream);
+ val_print_scalar_formatted (type, valaddr, embedded_offset,
+ original_value, options, 0, stream);
break;
}
if (options->vtblprint && pascal_object_is_vtbl_ptr_type (type))
{
/* Print the unmangled name if desired. */
/* Print vtable entry - we only get here if we ARE using
- -fvtable_thunks. (Otherwise, look under TYPE_CODE_STRUCT.) */
+ -fvtable_thunks. (Otherwise, look under TYPE_CODE_STRUCT.) */
/* Extract the address, assume that it is unsigned. */
addr = extract_unsigned_integer (valaddr + embedded_offset,
TYPE_LENGTH (type), byte_order);
- print_address_demangle (gdbarch, addr, stream, demangle);
+ print_address_demangle (options, gdbarch, addr, stream, demangle);
break;
}
- elttype = check_typedef (TYPE_TARGET_TYPE (type));
+ check_typedef (TYPE_TARGET_TYPE (type));
addr = unpack_pointer (type, valaddr + embedded_offset);
print_unpacked_pointer:
if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
{
/* Try to print what function it points to. */
- print_address_demangle (gdbarch, addr, stream, demangle);
- /* Return value is irrelevant except for string pointers. */
- return (0);
+ print_address_demangle (options, gdbarch, addr, stream, demangle);
+ return;
}
if (options->addressprint && options->format != 's')
{
fputs_filtered (paddress (gdbarch, addr), stream);
+ want_space = 1;
}
/* For a pointer to char or unsigned char, also print the string
&& (options->format == 0 || options->format == 's')
&& addr != 0)
{
- /* no wide string yet */
+ if (want_space)
+ fputs_filtered (" ", stream);
+ /* No wide string yet. */
i = val_print_string (elttype, NULL, addr, -1, stream, options);
}
- /* also for pointers to pascal strings */
+ /* Also for pointers to pascal strings. */
/* Note: this is Free Pascal specific:
as GDB does not recognize stabs pascal strings
Pascal strings are mapped to records
- with lowercase names PM */
+ with lowercase names PM. */
if (is_pascal_string_type (elttype, &length_pos, &length_size,
&string_pos, &char_type, NULL)
&& addr != 0)
ULONGEST string_length;
void *buffer;
+ if (want_space)
+ fputs_filtered (" ", stream);
buffer = xmalloc (length_size);
read_memory (addr + length_pos, buffer, length_size);
string_length = extract_unsigned_integer (buffer, length_size,
}
else if (pascal_object_is_vtbl_member (type))
{
- /* print vtbl's nicely */
+ /* Print vtbl's nicely. */
CORE_ADDR vt_address = unpack_pointer (type,
valaddr + embedded_offset);
struct minimal_symbol *msymbol =
lookup_minimal_symbol_by_pc (vt_address);
- if ((msymbol != NULL)
+ /* If 'symbol_print' is set, we did the work above. */
+ if (!options->symbol_print
+ && (msymbol != NULL)
&& (vt_address == SYMBOL_VALUE_ADDRESS (msymbol)))
{
- fputs_filtered (" <", stream);
+ if (want_space)
+ fputs_filtered (" ", stream);
+ fputs_filtered ("<", stream);
fputs_filtered (SYMBOL_PRINT_NAME (msymbol), stream);
fputs_filtered (">", stream);
+ want_space = 1;
}
if (vt_address && options->vtblprint)
{
struct block *block = (struct block *) NULL;
int is_this_fld;
+ if (want_space)
+ fputs_filtered (" ", stream);
+
if (msymbol != NULL)
wsym = lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol), block,
VAR_DOMAIN, &is_this_fld);
}
}
- /* Return number of characters printed, including the terminating
- '\0' if we reached the end. val_print_string takes care including
- the terminating '\0' if necessary. */
- return i;
-
- break;
+ return;
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 + 1, options,
- current_language);
- }
- else
- fputs_filtered ("???", stream);
- }
+ case TYPE_CODE_ENUM:
+ case TYPE_CODE_FLAGS:
+ case TYPE_CODE_FUNC:
+ case TYPE_CODE_RANGE:
+ case TYPE_CODE_INT:
+ case TYPE_CODE_FLT:
+ case TYPE_CODE_VOID:
+ case TYPE_CODE_ERROR:
+ case TYPE_CODE_UNDEF:
+ case TYPE_CODE_BOOL:
+ case TYPE_CODE_CHAR:
+ generic_val_print (type, valaddr, embedded_offset, address,
+ stream, recurse, original_value, options,
+ &p_decorations);
break;
case TYPE_CODE_UNION:
{
/* Print the unmangled name if desired. */
/* Print vtable entry - we only get here if NOT using
- -fvtable_thunks. (Otherwise, look under TYPE_CODE_PTR.) */
+ -fvtable_thunks. (Otherwise, look under TYPE_CODE_PTR.) */
/* Extract the address, assume that it is unsigned. */
print_address_demangle
- (gdbarch,
+ (options, gdbarch,
extract_unsigned_integer (valaddr + embedded_offset
+ TYPE_FIELD_BITPOS (type,
VTBL_FNADDR_OFFSET) / 8,
len = extract_unsigned_integer (valaddr + embedded_offset
+ length_pos, length_size,
byte_order);
- LA_PRINT_STRING (stream, char_type,
+ LA_PRINT_STRING (stream, char_type,
valaddr + embedded_offset + string_pos,
len, NULL, 0, options);
}
else
- pascal_object_print_value_fields (type, valaddr + embedded_offset,
+ pascal_object_print_value_fields (type, valaddr, embedded_offset,
address, stream, recurse,
original_value, 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_FLAGS:
- if (options->format)
- print_scalar_formatted (valaddr + embedded_offset, type,
- options, 0, stream);
- else
- val_print_type_code_flags (type, valaddr + embedded_offset, stream);
- 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
- {
- fputs_filtered ("true (", stream);
- fprintf_filtered (stream, "%ld)", (long int) val);
- }
- }
- break;
-
- case TYPE_CODE_RANGE:
- /* 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_BITSTRING:
case TYPE_CODE_SET:
elttype = TYPE_INDEX_TYPE (type);
CHECK_TYPEDEF (elttype);
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);
+ fputs_filtered ("[", stream);
i = get_discrete_bounds (range, &low_bound, &high_bound);
if (low_bound == 0 && high_bound == -1 && TYPE_LENGTH (type) > 0)
i = element;
goto maybe_bad_bstring;
}
- if (is_bitstring)
- fprintf_filtered (stream, "%d", element);
- else if (element)
+ if (element)
{
if (need_comma)
fputs_filtered (", ", stream);
}
}
done:
- if (is_bitstring)
- fputs_filtered ("'", stream);
- else
- fputs_filtered ("]", stream);
+ fputs_filtered ("]", stream);
}
break;
- case TYPE_CODE_VOID:
- fprintf_filtered (stream, "void");
- break;
-
- case TYPE_CODE_ERROR:
- fprintf_filtered (stream, "%s", TYPE_ERROR_NAME (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 pascal type code %d in symbol table."),
TYPE_CODE (type));
}
gdb_flush (stream);
- return (0);
}
\f
-int
+void
pascal_value_print (struct value *val, struct ui_file *stream,
const struct value_print_options *options)
{
|| TYPE_CODE (type) == TYPE_CODE_REF)
{
/* Hack: remove (char *) for char strings. Their
- type is indicated by the quoted string anyway. */
- if (TYPE_CODE (type) == TYPE_CODE_PTR
+ type is indicated by the quoted string anyway. */
+ if (TYPE_CODE (type) == TYPE_CODE_PTR
&& TYPE_NAME (type) == NULL
&& TYPE_NAME (TYPE_TARGET_TYPE (type)) != NULL
&& strcmp (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char") == 0)
{
- /* Print nothing */
+ /* Print nothing. */
}
else
{
fprintf_filtered (stream, ") ");
}
}
- return common_val_print (val, stream, 0, &opts, current_language);
+ common_val_print (val, stream, 0, &opts, current_language);
}
const struct value_print_options *);
static void pascal_object_print_value (struct type *, const gdb_byte *,
+ int,
CORE_ADDR, struct ui_file *, int,
const struct value *,
const struct value_print_options *,
int
pascal_object_is_vtbl_ptr_type (struct type *type)
{
- char *typename = type_name_no_tag (type);
+ const char *typename = type_name_no_tag (type);
return (typename != NULL
&& strcmp (typename, pascal_vtbl_ptr_name) == 0);
if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
{
type = TYPE_TARGET_TYPE (type);
- if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* if not using
- thunks */
- || TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */
+ if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* If not using
+ thunks. */
+ || TYPE_CODE (type) == TYPE_CODE_PTR) /* If using thunks. */
{
/* Virtual functions tables are full of pointers
- to virtual functions. */
+ to virtual functions. */
return pascal_object_is_vtbl_ptr_type (type);
}
}
void
pascal_object_print_value_fields (struct type *type, const gdb_byte *valaddr,
+ int offset,
CORE_ADDR address, struct ui_file *stream,
int recurse,
const struct value *val,
/* Print out baseclasses such that we don't print
duplicates of virtual baseclasses. */
if (n_baseclasses > 0)
- pascal_object_print_value (type, valaddr, address, stream,
- recurse + 1, val, options, dont_print_vb);
+ pascal_object_print_value (type, valaddr, offset, address,
+ stream, recurse + 1, val,
+ options, dont_print_vb);
if (!len && n_baseclasses == 1)
fprintf_filtered (stream, "<No data fields>");
else if (!value_bits_valid (val, TYPE_FIELD_BITPOS (type, i),
TYPE_FIELD_BITSIZE (type, i)))
{
- fputs_filtered (_("<value optimized out>"), stream);
+ val_print_optimized_out (stream);
}
else
{
struct value_print_options opts = *options;
- v = value_from_longest (TYPE_FIELD_TYPE (type, i),
- unpack_field_as_long (type, valaddr, i));
+ v = value_field_bitfield (type, i, valaddr, offset, val);
opts.deref_ref = 0;
common_val_print (v, stream, recurse + 1, &opts,
else if (field_is_static (&TYPE_FIELD (type, i)))
{
/* struct value *v = value_static_field (type, i);
- v4.17 specific */
+ v4.17 specific. */
struct value *v;
- v = value_from_longest (TYPE_FIELD_TYPE (type, i),
- unpack_field_as_long (type, valaddr, i));
+ v = value_field_bitfield (type, i, valaddr, offset, val);
if (v == NULL)
- fputs_filtered ("<optimized out>", stream);
+ val_print_optimized_out (stream);
else
pascal_object_print_static_field (v, stream, recurse + 1,
options);
address + TYPE_FIELD_BITPOS (type, i) / 8, 0,
stream, format, 0, recurse + 1, pretty); */
val_print (TYPE_FIELD_TYPE (type, i),
- valaddr, TYPE_FIELD_BITPOS (type, i) / 8,
- address + TYPE_FIELD_BITPOS (type, i) / 8,
- stream, recurse + 1, val, &opts,
+ valaddr, offset + TYPE_FIELD_BITPOS (type, i) / 8,
+ address, stream, recurse + 1, val, &opts,
current_language);
}
}
static void
pascal_object_print_value (struct type *type, const gdb_byte *valaddr,
+ int offset,
CORE_ADDR address, struct ui_file *stream,
int recurse,
const struct value *val,
for (i = 0; i < n_baseclasses; i++)
{
- int boffset;
+ int boffset = 0;
struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
- char *basename = type_name_no_tag (baseclass);
- const gdb_byte *base_valaddr;
+ const char *basename = type_name_no_tag (baseclass);
+ const gdb_byte *base_valaddr = NULL;
+ int thisoffset;
+ volatile struct gdb_exception ex;
+ int skip = 0;
if (BASETYPE_VIA_VIRTUAL (type, i))
{
obstack_ptr_grow (&dont_print_vb_obstack, baseclass);
}
- boffset = baseclass_offset (type, i, valaddr, address);
+ thisoffset = offset;
+
+ TRY_CATCH (ex, RETURN_MASK_ERROR)
+ {
+ boffset = baseclass_offset (type, i, valaddr, offset, address, val);
+ }
+ if (ex.reason < 0 && ex.error == NOT_AVAILABLE_ERROR)
+ skip = -1;
+ else if (ex.reason < 0)
+ skip = 1;
+ else
+ {
+ skip = 0;
+
+ /* The virtual base class pointer might have been clobbered by the
+ user program. Make sure that it still points to a valid memory
+ location. */
+
+ if (boffset < 0 || boffset >= TYPE_LENGTH (type))
+ {
+ gdb_byte *buf;
+ struct cleanup *back_to;
+
+ buf = xmalloc (TYPE_LENGTH (baseclass));
+ back_to = make_cleanup (xfree, buf);
+
+ base_valaddr = buf;
+ if (target_read_memory (address + boffset, buf,
+ TYPE_LENGTH (baseclass)) != 0)
+ skip = 1;
+ address = address + boffset;
+ thisoffset = 0;
+ boffset = 0;
+ do_cleanups (back_to);
+ }
+ else
+ base_valaddr = valaddr;
+ }
if (options->pretty)
{
fputs_filtered (basename ? basename : "", stream);
fputs_filtered ("> = ", stream);
- /* The virtual base class pointer might have been clobbered by the
- user program. Make sure that it still points to a valid memory
- location. */
-
- if (boffset != -1 && (boffset < 0 || boffset >= TYPE_LENGTH (type)))
- {
- /* FIXME (alloc): not safe is baseclass is really really big. */
- gdb_byte *buf = alloca (TYPE_LENGTH (baseclass));
-
- base_valaddr = buf;
- if (target_read_memory (address + boffset, buf,
- TYPE_LENGTH (baseclass)) != 0)
- boffset = -1;
- }
- else
- base_valaddr = valaddr + boffset;
-
- if (boffset == -1)
- fprintf_filtered (stream, "<invalid address>");
+ if (skip < 0)
+ val_print_unavailable (stream);
+ else if (skip > 0)
+ val_print_invalid_address (stream);
else
pascal_object_print_value_fields (baseclass, base_valaddr,
- address + boffset, stream,
- recurse, val, options,
+ thisoffset + boffset, address,
+ stream, recurse, val, options,
(struct type **) obstack_base (&dont_print_vb_obstack),
0);
fputs_filtered (", ", stream);
sizeof (CORE_ADDR));
CHECK_TYPEDEF (type);
- pascal_object_print_value_fields (type, value_contents (val), addr,
- stream, recurse, NULL, options,
- NULL, 1);
+ pascal_object_print_value_fields (type,
+ value_contents_for_printing (val),
+ value_embedded_offset (val),
+ addr,
+ stream, recurse,
+ val, options, NULL, 1);
return;
}
projects / binutils-gdb.git / blobdiff