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Introduce cp_print_value_fields and c_value_print_struct

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This adds cp_print_value_fields and c_value_print_struct, value-based
analogues of the corresponding val-printing functions.  Note that the
Modula-2 printing code also calls cp_print_val_fields, and so is
updated to call the function function.

gdb/ChangeLog
2020-03-13  Tom Tromey  <tom@tromey.com>

	* m2-valprint.c (m2_value_print_inner): Use
	cp_print_value_fields.
	* cp-valprint.c	(cp_print_value_fields): New function.
	* c-valprint.c (c_value_print_struct): New function.
	(c_value_print_inner): Use c_value_print_struct.
	* c-lang.h (cp_print_value_fields): Declare.
This commit is contained in:
Tom Tromey
2020-03-13 17:39:52 -06:00
parent 6999f067c1
commit 64b653ca70
5 changed files with 322 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
gdb/c-valprint.c
View File

@ -540,6 +540,34 @@ c_val_print_struct (struct type *type, const gdb_byte *valaddr,
NULL, 0);
}
/* c_value_print helper for TYPE_CODE_STRUCT and TYPE_CODE_UNION. */
static void
c_value_print_struct (struct value *val, struct ui_file *stream, int recurse,
const struct value_print_options *options)
{
struct type *type = check_typedef (value_type (val));
if (TYPE_CODE (type) == TYPE_CODE_UNION && recurse && !options->unionprint)
fprintf_filtered (stream, "{...}");
else if (options->vtblprint && cp_is_vtbl_ptr_type (type))
{
/* Print the unmangled name if desired. */
/* Print vtable entry - we only get here if NOT using
-fvtable_thunks. (Otherwise, look under
TYPE_CODE_PTR.) */
struct gdbarch *gdbarch = get_type_arch (type);
int offset = TYPE_FIELD_BITPOS (type, VTBL_FNADDR_OFFSET) / 8;
struct type *field_type = TYPE_FIELD_TYPE (type, VTBL_FNADDR_OFFSET);
const gdb_byte *valaddr = value_contents_for_printing (val);
CORE_ADDR addr = extract_typed_address (valaddr + offset, field_type);
print_function_pointer_address (options, gdbarch, addr, stream);
}
else
cp_print_value_fields (val, stream, recurse, options, NULL, 0);
}
/* c_val_print helper for TYPE_CODE_UNION. */
static void
@ -746,7 +774,6 @@ c_value_print_inner (struct value *val, struct ui_file *stream, int recurse,
const struct value_print_options *options)
{
struct type *type = value_type (val);
CORE_ADDR address = value_address (val);
const gdb_byte *valaddr = value_contents_for_printing (val);
type = check_typedef (type);
@ -765,13 +792,8 @@ c_value_print_inner (struct value *val, struct ui_file *stream, int recurse,
break;
case TYPE_CODE_UNION:
c_val_print_union (type, valaddr, 0, address, stream,
recurse, val, options);
break;
case TYPE_CODE_STRUCT:
c_val_print_struct (type, valaddr, 0, address, stream,
recurse, val, options);
c_value_print_struct (val, stream, recurse, options);
break;
case TYPE_CODE_INT: