| /* Self tests for gdbarch for GDB, the GNU debugger. |
| |
| Copyright (C) 2017-2019 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" |
| #if GDB_SELF_TEST |
| #include "common/selftest.h" |
| #include "selftest-arch.h" |
| #include "inferior.h" |
| #include "gdbthread.h" |
| #include "target.h" |
| #include "test-target.h" |
| #include "target-float.h" |
| #include "common/def-vector.h" |
| |
| namespace selftests { |
| |
| /* Test gdbarch methods register_to_value and value_to_register. */ |
| |
| static void |
| register_to_value_test (struct gdbarch *gdbarch) |
| { |
| const struct builtin_type *builtin = builtin_type (gdbarch); |
| struct type *types[] = |
| { |
| builtin->builtin_void, |
| builtin->builtin_char, |
| builtin->builtin_short, |
| builtin->builtin_int, |
| builtin->builtin_long, |
| builtin->builtin_signed_char, |
| builtin->builtin_unsigned_short, |
| builtin->builtin_unsigned_int, |
| builtin->builtin_unsigned_long, |
| builtin->builtin_float, |
| builtin->builtin_double, |
| builtin->builtin_long_double, |
| builtin->builtin_complex, |
| builtin->builtin_double_complex, |
| builtin->builtin_string, |
| builtin->builtin_bool, |
| builtin->builtin_long_long, |
| builtin->builtin_unsigned_long_long, |
| builtin->builtin_int8, |
| builtin->builtin_uint8, |
| builtin->builtin_int16, |
| builtin->builtin_uint16, |
| builtin->builtin_int32, |
| builtin->builtin_uint32, |
| builtin->builtin_int64, |
| builtin->builtin_uint64, |
| builtin->builtin_int128, |
| builtin->builtin_uint128, |
| builtin->builtin_char16, |
| builtin->builtin_char32, |
| }; |
| |
| /* Error out if debugging something, because we're going to push the |
| test target, which would pop any existing target. */ |
| if (current_top_target ()->stratum () >= process_stratum) |
| error (_("target already pushed")); |
| |
| /* Create a mock environment. An inferior with a thread, with a |
| process_stratum target pushed. */ |
| |
| test_target_ops mock_target; |
| ptid_t mock_ptid (1, 1); |
| inferior mock_inferior (mock_ptid.pid ()); |
| address_space mock_aspace {}; |
| mock_inferior.gdbarch = gdbarch; |
| mock_inferior.aspace = &mock_aspace; |
| thread_info mock_thread (&mock_inferior, mock_ptid); |
| |
| scoped_restore restore_thread_list |
| = make_scoped_restore (&mock_inferior.thread_list, &mock_thread); |
| |
| /* Add the mock inferior to the inferior list so that look ups by |
| target+ptid can find it. */ |
| scoped_restore restore_inferior_list |
| = make_scoped_restore (&inferior_list); |
| inferior_list = &mock_inferior; |
| |
| /* Switch to the mock inferior. */ |
| scoped_restore_current_inferior restore_current_inferior; |
| set_current_inferior (&mock_inferior); |
| |
| /* Push the process_stratum target so we can mock accessing |
| registers. */ |
| push_target (&mock_target); |
| |
| /* Pop it again on exit (return/exception). */ |
| SCOPE_EXIT { pop_all_targets_at_and_above (process_stratum); }; |
| |
| /* Switch to the mock thread. */ |
| scoped_restore restore_inferior_ptid |
| = make_scoped_restore (&inferior_ptid, mock_ptid); |
| |
| struct frame_info *frame = get_current_frame (); |
| const int num_regs = gdbarch_num_cooked_regs (gdbarch); |
| |
| /* Test gdbarch methods register_to_value and value_to_register with |
| different combinations of register numbers and types. */ |
| for (const auto &type : types) |
| { |
| for (auto regnum = 0; regnum < num_regs; regnum++) |
| { |
| if (gdbarch_convert_register_p (gdbarch, regnum, type)) |
| { |
| std::vector<gdb_byte> expected (TYPE_LENGTH (type), 0); |
| |
| if (TYPE_CODE (type) == TYPE_CODE_FLT) |
| { |
| /* Generate valid float format. */ |
| target_float_from_string (expected.data (), type, "1.25"); |
| } |
| else |
| { |
| for (auto j = 0; j < expected.size (); j++) |
| expected[j] = (regnum + j) % 16; |
| } |
| |
| gdbarch_value_to_register (gdbarch, frame, regnum, type, |
| expected.data ()); |
| |
| /* Allocate two bytes more for overflow check. */ |
| std::vector<gdb_byte> buf (TYPE_LENGTH (type) + 2, 0); |
| int optim, unavail, ok; |
| |
| /* Set the fingerprint in the last two bytes. */ |
| buf [TYPE_LENGTH (type)]= 'w'; |
| buf [TYPE_LENGTH (type) + 1]= 'l'; |
| ok = gdbarch_register_to_value (gdbarch, frame, regnum, type, |
| buf.data (), &optim, &unavail); |
| |
| SELF_CHECK (ok); |
| SELF_CHECK (!optim); |
| SELF_CHECK (!unavail); |
| |
| SELF_CHECK (buf[TYPE_LENGTH (type)] == 'w'); |
| SELF_CHECK (buf[TYPE_LENGTH (type) + 1] == 'l'); |
| |
| for (auto k = 0; k < TYPE_LENGTH(type); k++) |
| SELF_CHECK (buf[k] == expected[k]); |
| } |
| } |
| } |
| } |
| |
| } // namespace selftests |
| #endif /* GDB_SELF_TEST */ |
| |
| void |
| _initialize_gdbarch_selftests (void) |
| { |
| #if GDB_SELF_TEST |
| selftests::register_test_foreach_arch ("register_to_value", |
| selftests::register_to_value_test); |
| #endif |
| } |