mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-20 07:43:36 +08:00
15ce8941e7
unpack_bits_as_long is documented as sign-extending its result when the type is signed. However, it was only doing sign-extension in the case where the field was a bitfield -- that is, not when the "bitsize" parameter was 0, indicating the size should be taken from the type. Also, unpack_bits_as_long was incorrectly computing the shift for big-endian architectures for the non-bitfield case. This patch fixes these bugs in a straightforward way. A new selftest is included. 2018-02-26 Tom Tromey <tom@tromey.com> * Makefile.in (SUBDIR_UNITTESTS_SRCS): Add unittests/unpack-selftests.c. * unittests/unpack-selftests.c: New file. * value.c (unpack_bits_as_long): Fix bugs in non-bitfield cases.
62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
/* Self tests for unpack_field_as_long
|
|
|
|
Copyright (C) 2018 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 3 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, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#include "defs.h"
|
|
#include "selftest.h"
|
|
#include "selftest-arch.h"
|
|
#include "value.h"
|
|
#include "gdbtypes.h"
|
|
#include "arch-utils.h"
|
|
|
|
namespace selftests {
|
|
namespace unpack {
|
|
|
|
static void
|
|
unpack_field_as_long_tests (struct gdbarch *arch)
|
|
{
|
|
gdb_byte buffer[8];
|
|
const struct builtin_type *bt = builtin_type (arch);
|
|
struct type *struct_type = arch_composite_type (arch, "<<selftest>>",
|
|
TYPE_CODE_STRUCT);
|
|
|
|
append_composite_type_field (struct_type, "field0", bt->builtin_int8);
|
|
append_composite_type_field_aligned (struct_type, "field1",
|
|
bt->builtin_uint32, 4);
|
|
|
|
memset (buffer, 0, sizeof (buffer));
|
|
buffer[0] = 255;
|
|
if (gdbarch_byte_order (arch) == BFD_ENDIAN_BIG)
|
|
buffer[7] = 23;
|
|
else
|
|
buffer[4] = 23;
|
|
|
|
SELF_CHECK (unpack_field_as_long (struct_type, buffer, 0) == -1);
|
|
SELF_CHECK (unpack_field_as_long (struct_type, buffer, 1) == 23);
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
void
|
|
_initialize_unpack_selftests ()
|
|
{
|
|
selftests::register_test_foreach_arch
|
|
("unpack_field_as_long", selftests::unpack::unpack_field_as_long_tests);
|
|
}
|