+2016-03-09 Pedro Alves <palves@redhat.com>
+
+ * doublest.c (floatformat_totalsize_bytes): New function.
+ (floatformat_from_type): Assert that the type's length is at least
+ as long as the floatformat's totalsize.
+ * doublest.h (floatformat_totalsize_bytes): New declaration.
+ * gdbtypes.c (arch_float_type): Assert that the type's length is
+ at least as long as the floatformat's totalsize.
+
2016-03-09 Pedro Alves <palves@redhat.com>
* hppa-linux-tdep.c (hppa_linux_init_abi): Set the long double
static const struct floatformat *host_long_double_format
= GDB_HOST_LONG_DOUBLE_FORMAT;
+/* See doublest.h. */
+
+size_t
+floatformat_totalsize_bytes (const struct floatformat *fmt)
+{
+ return ((fmt->totalsize + FLOATFORMAT_CHAR_BIT - 1)
+ / FLOATFORMAT_CHAR_BIT);
+}
+
void
floatformat_to_doublest (const struct floatformat *fmt,
const void *in, DOUBLEST *out)
floatformat_from_type (const struct type *type)
{
struct gdbarch *gdbarch = get_type_arch (type);
+ const struct floatformat *fmt;
gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLT);
if (TYPE_FLOATFORMAT (type) != NULL)
- return TYPE_FLOATFORMAT (type)[gdbarch_byte_order (gdbarch)];
+ fmt = TYPE_FLOATFORMAT (type)[gdbarch_byte_order (gdbarch)];
else
- return floatformat_from_length (gdbarch, TYPE_LENGTH (type));
+ fmt = floatformat_from_length (gdbarch, TYPE_LENGTH (type));
+
+ gdb_assert (TYPE_LENGTH (type) >= floatformat_totalsize_bytes (fmt));
+ return fmt;
}
/* Extract a floating-point number of type TYPE from a target-order
const struct floatformat *floatformat_from_type (const struct type *type);
+/* Return the floatformat's total size in host bytes. */
+
+extern size_t floatformat_totalsize_bytes (const struct floatformat *fmt);
+
extern DOUBLEST extract_typed_floating (const void *addr,
const struct type *type);
extern void store_typed_floating (void *addr, const struct type *type,
t = arch_type (gdbarch, TYPE_CODE_FLT, bit / TARGET_CHAR_BIT, name);
TYPE_FLOATFORMAT (t) = floatformats;
+
+ if (floatformats != NULL)
+ {
+ size_t len = TYPE_LENGTH (t);
+
+ gdb_assert (len >= floatformat_totalsize_bytes (floatformats[0]));
+ gdb_assert (len >= floatformat_totalsize_bytes (floatformats[1]));
+ }
+
return t;
}