180 lines
5.3 KiB
C
180 lines
5.3 KiB
C
/* Self tests for gdbarch for GDB, the GNU debugger.
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Copyright (C) 2017-2018 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#if GDB_SELF_TEST
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#include "selftest.h"
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#include "selftest-arch.h"
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#include "inferior.h"
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#include "gdbthread.h"
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#include "target.h"
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#include "target-float.h"
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#include "common/def-vector.h"
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namespace selftests {
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/* Test gdbarch methods register_to_value and value_to_register. */
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static void
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register_to_value_test (struct gdbarch *gdbarch)
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{
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const struct builtin_type *builtin = builtin_type (gdbarch);
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struct type *types[] =
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{
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builtin->builtin_void,
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builtin->builtin_char,
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builtin->builtin_short,
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builtin->builtin_int,
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builtin->builtin_long,
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builtin->builtin_signed_char,
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builtin->builtin_unsigned_short,
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builtin->builtin_unsigned_int,
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builtin->builtin_unsigned_long,
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builtin->builtin_float,
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builtin->builtin_double,
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builtin->builtin_long_double,
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builtin->builtin_complex,
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builtin->builtin_double_complex,
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builtin->builtin_string,
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builtin->builtin_bool,
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builtin->builtin_long_long,
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builtin->builtin_unsigned_long_long,
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builtin->builtin_int8,
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builtin->builtin_uint8,
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builtin->builtin_int16,
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builtin->builtin_uint16,
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builtin->builtin_int32,
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builtin->builtin_uint32,
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builtin->builtin_int64,
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builtin->builtin_uint64,
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builtin->builtin_int128,
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builtin->builtin_uint128,
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builtin->builtin_char16,
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builtin->builtin_char32,
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};
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/* Error out if debugging something, because we're going to push the
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test target, which would pop any existing target. */
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if (current_top_target ()->to_stratum >= process_stratum)
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error (_("target already pushed"));
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/* Create a mock environment. An inferior with a thread, with a
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process_stratum target pushed. */
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test_target_ops mock_target;
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ptid_t mock_ptid (1, 1);
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inferior mock_inferior (mock_ptid.pid ());
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address_space mock_aspace {};
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mock_inferior.gdbarch = gdbarch;
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mock_inferior.aspace = &mock_aspace;
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thread_info mock_thread (&mock_inferior, mock_ptid);
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scoped_restore restore_thread_list
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= make_scoped_restore (&thread_list, &mock_thread);
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/* Add the mock inferior to the inferior list so that look ups by
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target+ptid can find it. */
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scoped_restore restore_inferior_list
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= make_scoped_restore (&inferior_list);
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inferior_list = &mock_inferior;
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/* Switch to the mock inferior. */
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scoped_restore_current_inferior restore_current_inferior;
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set_current_inferior (&mock_inferior);
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/* Push the process_stratum target so we can mock accessing
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registers. */
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push_target (&mock_target);
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/* Pop it again on exit (return/exception). */
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struct on_exit
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{
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~on_exit ()
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{
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pop_all_targets_at_and_above (process_stratum);
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}
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} pop_targets;
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/* Switch to the mock thread. */
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scoped_restore restore_inferior_ptid
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= make_scoped_restore (&inferior_ptid, mock_ptid);
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struct frame_info *frame = get_current_frame ();
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const int num_regs = gdbarch_num_cooked_regs (gdbarch);
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/* Test gdbarch methods register_to_value and value_to_register with
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different combinations of register numbers and types. */
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for (const auto &type : types)
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{
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for (auto regnum = 0; regnum < num_regs; regnum++)
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{
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if (gdbarch_convert_register_p (gdbarch, regnum, type))
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{
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std::vector<gdb_byte> expected (TYPE_LENGTH (type), 0);
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if (TYPE_CODE (type) == TYPE_CODE_FLT)
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{
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/* Generate valid float format. */
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target_float_from_string (expected.data (), type, "1.25");
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}
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else
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{
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for (auto j = 0; j < expected.size (); j++)
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expected[j] = (regnum + j) % 16;
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}
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gdbarch_value_to_register (gdbarch, frame, regnum, type,
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expected.data ());
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/* Allocate two bytes more for overflow check. */
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std::vector<gdb_byte> buf (TYPE_LENGTH (type) + 2, 0);
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int optim, unavail, ok;
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/* Set the fingerprint in the last two bytes. */
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buf [TYPE_LENGTH (type)]= 'w';
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buf [TYPE_LENGTH (type) + 1]= 'l';
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ok = gdbarch_register_to_value (gdbarch, frame, regnum, type,
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buf.data (), &optim, &unavail);
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SELF_CHECK (ok);
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SELF_CHECK (!optim);
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SELF_CHECK (!unavail);
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SELF_CHECK (buf[TYPE_LENGTH (type)] == 'w');
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SELF_CHECK (buf[TYPE_LENGTH (type) + 1] == 'l');
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for (auto k = 0; k < TYPE_LENGTH(type); k++)
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SELF_CHECK (buf[k] == expected[k]);
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}
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}
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}
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}
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} // namespace selftests
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#endif /* GDB_SELF_TEST */
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void
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_initialize_gdbarch_selftests (void)
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{
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#if GDB_SELF_TEST
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selftests::register_test_foreach_arch ("register_to_value",
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selftests::register_to_value_test);
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#endif
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}
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