binutils-gdb/gdb/testsuite/gdb.ada/bias/pck.ads

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-- Copyright 2012-2020 Free Software Foundation, Inc.
Handle biased types In Ada, the programmer can request that a range type with a non-zero base be stored in the minimal number of bits required for the range. This is done by biasing the values; so, for example, a range of -7..-4 may be stored as two bits with a bias of -7. This patch implements this for gdb. It is done by adding a bias to struct range_bounds and then adjusting a few spots to handle this. The test case is written to use -fgnat-encodings=minimal, but a future compiler patch will change the compiler to emit DW_AT_GNU_bias with -fgnat-encodings=gdb. It seemed good to get the gdb patch in first. Tested on x86-64 Fedora 29; plus a variety of targets using AdaCore's internal test suite. gdb/ChangeLog 2019-09-03 Tom Tromey <tromey@adacore.com> * ada-valprint.c (ada_val_print_num): Don't recurse for range types. (has_negatives): Unbias a range type bound. * dwarf2read.c (read_subrange_type): Handle DW_AT_GNU_bias. * gdbtypes.c (operator==): Handle new field. (create_range_type): Add "bias" parameter. (create_static_range_type, resolve_dynamic_range): Update. * gdbtypes.h (struct range_bounds) <bias>: New member. (create_range_type): Add bias parameter. * printcmd.c (print_scalar_formatted): Unbias range types. * value.c (unpack_long): Unbias range types. (pack_long): Bias range types. gdb/testsuite/ChangeLog 2019-09-03 Tom Tromey <tromey@adacore.com> * gdb.ada/bias.exp: New file. * gdb.ada/bias/bias.adb: New file. * gdb.ada/print_chars.exp: Add regression test. * gdb.ada/print_chars/foo.adb (My_Character): New type. (MC): New variable.
2019-05-14 03:21:48 +08:00
--
-- 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/>.
with System;
package Pck is
procedure Do_Nothing (A : System.Address);
end Pck;