mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2025-01-12 12:16:04 +08:00
007e153034
This adds alignof and _Alignof to the C/C++ expression parser, and adds new tests to test the features. The tests are written to try to ensure that gdb's knowledge of alignment rules stays in sync with the compiler's. 2018-04-30 Tom Tromey <tom@tromey.com> PR exp/17095: * NEWS: Update. * std-operator.def (UNOP_ALIGNOF): New operator. * expprint.c (dump_subexp_body_standard) <case UNOP_ALIGNOF>: New. * eval.c (evaluate_subexp_standard) <case UNOP_ALIGNOF>: New. * c-lang.c (c_op_print_tab): Add alignof. * c-exp.y (ALIGNOF): New token. (exp): Add "ALIGNOF" production. (ident_tokens): Add _Alignof and alignof. 2018-04-30 Tom Tromey <tom@tromey.com> PR exp/17095: * gdb.dwarf2/dw2-align.exp: New file. * gdb.cp/align.exp: New file. * gdb.base/align.exp: New file. * lib/gdb.exp (gdb_int128_helper): New proc. (has_int128_c, has_int128_cxx): New caching procs.
84 lines
2.3 KiB
Plaintext
84 lines
2.3 KiB
Plaintext
# Copyright 2018 Free Software Foundation, Inc.
|
|
|
|
# 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/>.
|
|
load_lib dwarf.exp
|
|
|
|
# This test can only be run on targets which support DWARF-2 and use gas.
|
|
if {![dwarf2_support]} {
|
|
return 0
|
|
}
|
|
|
|
standard_testfile main.c align-dw.S
|
|
|
|
# Make some DWARF for the test.
|
|
|
|
set asm_file [standard_output_file $srcfile2]
|
|
Dwarf::assemble $asm_file {
|
|
global srcdir subdir srcfile
|
|
|
|
cu {} {
|
|
DW_TAG_compile_unit {
|
|
{DW_AT_language @DW_LANG_C_plus_plus}
|
|
{DW_AT_name dw2-align.c}
|
|
{DW_AT_comp_dir /tmp}
|
|
} {
|
|
declare_labels itype ptype
|
|
|
|
itype: DW_TAG_base_type {
|
|
{DW_AT_byte_size 4 DW_FORM_sdata}
|
|
{DW_AT_encoding @DW_ATE_signed}
|
|
{DW_AT_name int_4096}
|
|
{DW_AT_alignment 4096 DW_FORM_sdata}
|
|
}
|
|
|
|
ptype: DW_TAG_pointer_type {
|
|
{DW_AT_byte_size 8 DW_FORM_sdata}
|
|
{DW_AT_type :$itype}
|
|
{DW_AT_alignment 4096 DW_FORM_sdata}
|
|
}
|
|
|
|
DW_TAG_typedef {
|
|
{DW_AT_name ptr_4096}
|
|
{DW_AT_type :$ptype}
|
|
}
|
|
|
|
DW_TAG_structure_type {
|
|
{DW_AT_name "struct_4096"}
|
|
{DW_AT_byte_size 4096 DW_FORM_sdata}
|
|
{DW_AT_alignment 4096 DW_FORM_udata}
|
|
} {
|
|
member {
|
|
{name a}
|
|
{type :$itype}
|
|
{data_member_location 0 data1}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if { [prepare_for_testing "failed to prepare" ${testfile} \
|
|
[list $srcfile $asm_file] {nodebug}] } {
|
|
return -1
|
|
}
|
|
|
|
if ![runto_main] {
|
|
return -1
|
|
}
|
|
|
|
gdb_test_no_output "set lang c++"
|
|
gdb_test "print alignof(int_4096)" " = 4096"
|
|
gdb_test "print alignof(ptr_4096)" " = 4096"
|
|
gdb_test "print alignof(struct_4096)" " = 4096"
|