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# Copyright 2016 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/>.
# Test accessing "non-variable" variables, i.e., variables which are
# optimized to a constant DWARF location expression and/or
# partially/fully optimized out.
load_lib dwarf.exp
if {![dwarf2_support]} { return 0 }
standard_testfile main.c nonvar-access-dw.S
# Make some DWARF for the test.
set asm_file [standard_output_file $srcfile2]
Dwarf::assemble $asm_file {
cu {} {
compile_unit {
{DW_AT_name main.c}
} {
declare_labels int_type_label short_type_label
declare_labels struct_s_label struct_t_label
int_type_label: base_type {
{name "int"}
{encoding @DW_ATE_signed}
{byte_size 4 DW_FORM_sdata}
}
struct_s_label: structure_type {
{name s}
{byte_size 4 DW_FORM_sdata}
} {
member {
{name a}
{type :$int_type_label}
{data_member_location 0 DW_FORM_udata}
{bit_size 8 DW_FORM_udata}
}
member {
{name b}
{type :$int_type_label}
{data_bit_offset 8 DW_FORM_udata}
{bit_size 24 DW_FORM_udata}
}
}
struct_t_label: structure_type {
{name t}
{byte_size 4 DW_FORM_sdata}
} {
member {
{name a}
{type :$int_type_label}
{data_member_location 0 DW_FORM_udata}
{bit_size 9 DW_FORM_udata}
}
member {
{name b}
{type :$int_type_label}
{data_bit_offset 9 DW_FORM_udata}
{bit_size 23 DW_FORM_udata}
}
}
DW_TAG_subprogram {
{name main}
{DW_AT_external 1 flag}
{low_pc [gdb_target_symbol main] DW_FORM_addr}
{high_pc [gdb_target_symbol main]+0x10000 DW_FORM_addr}
} {
DW_TAG_variable {
{name undef_int}
{type :$int_type_label}
}
DW_TAG_variable {
{name undef_s}
{type :$struct_s_label}
}
DW_TAG_variable {
{name def_s}
{type :$struct_s_label}
{location {
const1u 0
stack_value
bit_piece 8 0
const1s -1
stack_value
bit_piece 24 0
} SPECIAL_expr}
}
DW_TAG_variable {
{name def_t}
{type :$struct_t_label}
{location {
const1u 0
stack_value
bit_piece 9 0
const1s -1
stack_value
bit_piece 23 0
} SPECIAL_expr}
}
}
}
}
}
if { [prepare_for_testing ${testfile}.exp ${testfile} \
[list $srcfile $asm_file] {nodebug}] } {
return -1
}
if ![runto_main] {
return -1
}
gdb_test "print def_s" " = \\{a = 0, b = -1\\}"
gdb_test "print def_t" " = \\{a = 0, b = -1\\}"
gdb_test "print undef_int" " = <optimized out>"
gdb_test "print undef_s.a" " = <optimized out>"
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