/* Print values for GDB, the GNU debugger.
- Copyright (C) 1986-2020 Free Software Foundation, Inc.
+ Copyright (C) 1986-2021 Free Software Foundation, Inc.
This file is part of GDB.
#include "gdbarch.h"
#include "cli/cli-style.h"
#include "count-one-bits.h"
+#include "c-lang.h"
+#include "cp-abi.h"
+#include "inferior.h"
+#include "gdbsupport/selftest.h"
+#include "selftest-arch.h"
/* Maximum number of wchars returned from wchar_iterate. */
#define MAX_WCHARS 4
10, /* repeat_count_threshold */
0, /* output_format */
0, /* format */
+ 1, /* memory_tag_violations */
0, /* stop_print_at_null */
0, /* print_array_indexes */
0, /* deref_ref */
static void
show_print_array_indexes (struct ui_file *file, int from_tty,
- struct cmd_list_element *c, const char *value)
+ struct cmd_list_element *c, const char *value)
{
fprintf_filtered (file, _("Printing of array indexes is %s.\n"), value);
}
value);
}
+/* If nonzero, prints memory tag violations for pointers. */
+
+static void
+show_memory_tag_violations (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file,
+ _("Printing of memory tag violations is %s.\n"),
+ value);
+}
+
/* If nonzero, stops printing of char arrays at first null. */
static void
CORE_ADDR address, struct ui_file *stream,
const struct value_print_options *options)
{
- struct gdbarch *gdbarch = get_type_arch (type);
+ struct gdbarch *gdbarch = type->arch ();
if (elttype->code () == TYPE_CODE_FUNC)
{
print_ref_address (struct type *type, const gdb_byte *address_buffer,
int embedded_offset, struct ui_file *stream)
{
- struct gdbarch *gdbarch = get_type_arch (type);
+ struct gdbarch *gdbarch = type->arch ();
if (address_buffer != NULL)
{
fputs_styled (TYPE_FIELD_NAME (type, i), variable_name_style.style (),
stream);
}
- else if (TYPE_FLAG_ENUM (type))
+ else if (type->is_flag_enum ())
{
int first = 1;
const struct value_print_options *options)
{
LONGEST val;
- struct gdbarch *gdbarch = get_type_arch (type);
+ struct gdbarch *gdbarch = type->arch ();
int unit_size = gdbarch_addressable_memory_unit_size (gdbarch);
gdb_assert (!options->format);
struct value *original_value,
const struct value_print_options *options)
{
- struct gdbarch *gdbarch = get_type_arch (type);
+ struct gdbarch *gdbarch = type->arch ();
gdb_assert (!options->format);
print_floating (valaddr, type, stream);
}
+/* generic_val_print helper for TYPE_CODE_FIXED_POINT. */
+
+static void
+generic_val_print_fixed_point (struct value *val, struct ui_file *stream,
+ const struct value_print_options *options)
+{
+ if (options->format)
+ value_print_scalar_formatted (val, options, 0, stream);
+ else
+ {
+ struct type *type = value_type (val);
+
+ const gdb_byte *valaddr = value_contents_for_printing (val);
+ gdb_mpf f;
+
+ f.read_fixed_point (gdb::make_array_view (valaddr, TYPE_LENGTH (type)),
+ type_byte_order (type), type->is_unsigned (),
+ type->fixed_point_scaling_factor ());
+
+ const char *fmt = TYPE_LENGTH (type) < 4 ? "%.11Fg" : "%.17Fg";
+ std::string str = gmp_string_printf (fmt, f.val);
+ fprintf_filtered (stream, "%s", str.c_str ());
+ }
+}
+
/* generic_value_print helper for TYPE_CODE_COMPLEX. */
static void
fprintf_filtered (stream, "%s", decorations->complex_suffix);
}
+/* generic_value_print helper for TYPE_CODE_MEMBERPTR. */
+
+static void
+generic_value_print_memberptr
+ (struct value *val, struct ui_file *stream,
+ int recurse,
+ const struct value_print_options *options,
+ const struct generic_val_print_decorations *decorations)
+{
+ if (!options->format)
+ {
+ /* Member pointers are essentially specific to C++, and so if we
+ encounter one, we should print it according to C++ rules. */
+ struct type *type = check_typedef (value_type (val));
+ const gdb_byte *valaddr = value_contents_for_printing (val);
+ cp_print_class_member (valaddr, type, stream, "&");
+ }
+ else
+ generic_value_print (val, stream, recurse, options, decorations);
+}
+
/* See valprint.h. */
void
struct type *type = value_type (val);
type = check_typedef (type);
+
+ if (is_fixed_point_type (type))
+ type = type->fixed_point_type_base_type ();
+
switch (type->code ())
{
case TYPE_CODE_ARRAY:
break;
case TYPE_CODE_MEMBERPTR:
- value_print_scalar_formatted (val, options, 0, stream);
+ generic_value_print_memberptr (val, stream, recurse, options,
+ decorations);
break;
case TYPE_CODE_PTR:
break;
case TYPE_CODE_RANGE:
- /* 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_INT:
generic_value_print_int (val, stream, options);
break;
generic_val_print_float (type, stream, val, options);
break;
+ case TYPE_CODE_FIXED_POINT:
+ generic_val_print_fixed_point (val, stream, options);
+ break;
+
case TYPE_CODE_VOID:
fputs_filtered (decorations->void_name, stream);
break;
case TYPE_CODE_UNDEF:
/* This happens (without TYPE_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. */
+ 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_styled (stream, metadata_style.style (), _("<incomplete type>"));
break;
generic_value_print_complex (val, stream, options, decorations);
break;
+ case TYPE_CODE_METHODPTR:
+ cplus_print_method_ptr (value_contents_for_printing (val), type,
+ stream);
+ break;
+
case TYPE_CODE_UNION:
case TYPE_CODE_STRUCT:
- case TYPE_CODE_METHODPTR:
default:
error (_("Unhandled type code %d in symbol table."),
type->code ());
only a stub and we can't find and substitute its complete type, then
print appropriate string and return. */
- if (TYPE_STUB (real_type))
+ if (real_type->is_stub ())
{
fprintf_styled (stream, metadata_style.style (), _("<incomplete type>"));
return;
{
if (options->max_depth > -1 && recurse >= options->max_depth)
{
- gdb_assert (language->la_struct_too_deep_ellipsis != NULL);
- fputs_filtered (language->la_struct_too_deep_ellipsis, stream);
+ gdb_assert (language->struct_too_deep_ellipsis () != NULL);
+ fputs_filtered (language->struct_too_deep_ellipsis (), stream);
return true;
}
return;
}
- LA_VALUE_PRINT (val, stream, options);
+ current_language->value_print (val, stream, options);
}
static void
+ embedded_offset);
ULONGEST val = unpack_long (type, valaddr);
int field, nfields = type->num_fields ();
- struct gdbarch *gdbarch = get_type_arch (type);
+ struct gdbarch *gdbarch = type->arch ();
struct type *bool_type = builtin_type (gdbarch)->builtin_bool;
fputs_filtered ("[", stream);
else
{
unsigned field_len = TYPE_FIELD_BITSIZE (type, field);
- ULONGEST field_val
- = val >> (TYPE_FIELD_BITPOS (type, field) - field_len + 1);
+ ULONGEST field_val = val >> TYPE_FIELD_BITPOS (type, field);
if (field_len < sizeof (ULONGEST) * TARGET_CHAR_BIT)
field_val &= ((ULONGEST) 1 << field_len) - 1;
/* Take low nibble and bump our pointer "p". */
digits[0] += LOW_NIBBLE (*p);
- if (byte_order == BFD_ENDIAN_BIG)
+ if (byte_order == BFD_ENDIAN_BIG)
p++;
else
p--;
}
}
-/* VALADDR points to a char integer of LEN bytes.
- Print it out in appropriate language form on stream.
- Omit any leading zero chars. */
-
-void
-print_char_chars (struct ui_file *stream, struct type *type,
- const gdb_byte *valaddr,
- unsigned len, enum bfd_endian byte_order)
-{
- const gdb_byte *p;
-
- if (byte_order == BFD_ENDIAN_BIG)
- {
- p = valaddr;
- while (p < valaddr + len - 1 && *p == 0)
- ++p;
-
- while (p < valaddr + len)
- {
- LA_EMIT_CHAR (*p, type, stream, '\'');
- ++p;
- }
- }
- else
- {
- p = valaddr + len - 1;
- while (p > valaddr && *p == 0)
- --p;
-
- while (p >= valaddr)
- {
- LA_EMIT_CHAR (*p, type, stream, '\'');
- --p;
- }
- }
-}
-
/* Print function pointer with inferior address ADDRESS onto stdio
stream STREAM. */
CORE_ADDR address,
struct ui_file *stream)
{
- CORE_ADDR func_addr
- = gdbarch_convert_from_func_ptr_addr (gdbarch, address,
- current_top_target ());
+ CORE_ADDR func_addr = gdbarch_convert_from_func_ptr_addr
+ (gdbarch, address, current_inferior ()->top_target ());
/* If the function pointer is represented by a description, print
the address of the description. */
void
maybe_print_array_index (struct type *index_type, LONGEST index,
- struct ui_file *stream,
+ struct ui_file *stream,
const struct value_print_options *options)
{
if (!options->print_array_indexes)
return;
-
- LA_PRINT_ARRAY_INDEX (index_type, index, stream, options);
+
+ current_language->print_array_index (index_type, index, stream, options);
}
/* See valprint.h. */
if (get_array_bounds (type, &low_bound, &high_bound))
{
/* The array length should normally be HIGH_BOUND - LOW_BOUND +
- 1. But we have to be a little extra careful, because some
- languages such as Ada allow LOW_BOUND to be greater than
- HIGH_BOUND for empty arrays. In that situation, the array
- length is just zero, not negative! */
+ 1. But we have to be a little extra careful, because some
+ languages such as Ada allow LOW_BOUND to be greater than
+ HIGH_BOUND for empty arrays. In that situation, the array
+ length is just zero, not negative! */
if (low_bound > high_bound)
len = 0;
else
}
wrap_here (n_spaces (2 + 2 * recurse));
maybe_print_array_index (index_type, i + low_bound,
- stream, options);
+ stream, options);
rep1 = i + 1;
reps = 1;
unsigned int fetchlimit; /* Maximum number of chars to print. */
int bytes_read;
gdb::unique_xmalloc_ptr<gdb_byte> buffer; /* Dynamically growable fetch buffer. */
- struct gdbarch *gdbarch = get_type_arch (elttype);
+ struct gdbarch *gdbarch = elttype->arch ();
enum bfd_endian byte_order = type_byte_order (elttype);
int width = TYPE_LENGTH (elttype);
gdb_byte *peekbuf;
/* We didn't find a NUL terminator we were looking for. Attempt
- to peek at the next character. If not successful, or it is not
- a null byte, then force ellipsis to be printed. */
+ to peek at the next character. If not successful, or it is not
+ a null byte, then force ellipsis to be printed. */
peekbuf = (gdb_byte *) alloca (width);
else if ((len >= 0 && err != 0) || (len > bytes_read / width))
{
/* Getting an error when we have a requested length, or fetching less
- than the number of characters actually requested, always make us
- print ellipsis. */
+ than the number of characters actually requested, always make us
+ print ellipsis. */
force_ellipsis = 1;
}
Use \"unlimited\" to print the complete structure.")
},
+ boolean_option_def {
+ "memory-tag-violations",
+ [] (value_print_options *opt) { return &opt->memory_tag_violations; },
+ show_memory_tag_violations, /* show_cmd_cb */
+ N_("Set printing of memory tag violations for pointers."),
+ N_("Show printing of memory tag violations for pointers."),
+ N_("Issue a warning when the printed value is a pointer\n\
+whose logical tag doesn't match the allocation tag of the memory\n\
+location it points to."),
+ },
+
boolean_option_def {
"null-stop",
[] (value_print_options *opt) { return &opt->stop_print_at_null; },
return {{value_print_option_defs}, opts};
}
+#if GDB_SELF_TEST
+
+/* Test printing of TYPE_CODE_FLAGS values. */
+
+static void
+test_print_flags (gdbarch *arch)
+{
+ type *flags_type = arch_flags_type (arch, "test_type", 32);
+ type *field_type = builtin_type (arch)->builtin_uint32;
+
+ /* Value: 1010 1010
+ Fields: CCCB BAAA */
+ append_flags_type_field (flags_type, 0, 3, field_type, "A");
+ append_flags_type_field (flags_type, 3, 2, field_type, "B");
+ append_flags_type_field (flags_type, 5, 3, field_type, "C");
+
+ value *val = allocate_value (flags_type);
+ gdb_byte *contents = value_contents_writeable (val);
+ store_unsigned_integer (contents, 4, gdbarch_byte_order (arch), 0xaa);
+
+ string_file out;
+ val_print_type_code_flags (flags_type, val, 0, &out);
+ SELF_CHECK (out.string () == "[ A=2 B=1 C=5 ]");
+}
+
+#endif
+
void _initialize_valprint ();
void
_initialize_valprint ()
{
+#if GDB_SELF_TEST
+ selftests::register_test_foreach_arch ("print-flags", test_print_flags);
+#endif
+
cmd_list_element *cmd;
- add_basic_prefix_cmd ("print", no_class,
- _("Generic command for setting how things print."),
- &setprintlist, "set print ", 0, &setlist);
- add_alias_cmd ("p", "print", no_class, 1, &setlist);
+ cmd_list_element *set_print_cmd
+ = add_basic_prefix_cmd ("print", no_class,
+ _("Generic command for setting how things print."),
+ &setprintlist, 0, &setlist);
+ add_alias_cmd ("p", set_print_cmd, no_class, 1, &setlist);
/* Prefer set print to set prompt. */
- add_alias_cmd ("pr", "print", no_class, 1, &setlist);
+ add_alias_cmd ("pr", set_print_cmd, no_class, 1, &setlist);
- add_show_prefix_cmd ("print", no_class,
- _("Generic command for showing print settings."),
- &showprintlist, "show print ", 0, &showlist);
- add_alias_cmd ("p", "print", no_class, 1, &showlist);
- add_alias_cmd ("pr", "print", no_class, 1, &showlist);
+ cmd_list_element *show_print_cmd
+ = add_show_prefix_cmd ("print", no_class,
+ _("Generic command for showing print settings."),
+ &showprintlist, 0, &showlist);
+ add_alias_cmd ("p", show_print_cmd, no_class, 1, &showlist);
+ add_alias_cmd ("pr", show_print_cmd, no_class, 1, &showlist);
cmd = add_basic_prefix_cmd ("raw", no_class,
_("\
Generic command for setting what things to print in \"raw\" mode."),
- &setprintrawlist, "set print raw ", 0,
- &setprintlist);
+ &setprintrawlist, 0, &setprintlist);
deprecate_cmd (cmd, nullptr);
cmd = add_show_prefix_cmd ("raw", no_class,
_("Generic command for showing \"print raw\" settings."),
- &showprintrawlist, "show print raw ", 0,
- &showprintlist);
+ &showprintrawlist, 0, &showprintlist);
deprecate_cmd (cmd, nullptr);
gdb::option::add_setshow_cmds_for_options
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