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# Copyright 2015-2019 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
# Test GDB does not internal error on DWARF register number -1 which is invalid
# in DWARF. clang-3.5.0-9.fc22.x86_64 produced it inside DW_AT_location.
# This test can only be run on targets which support DWARF-2 and use gas.
if {![dwarf2_support]} {
return 0
}
standard_testfile .S main.c
# Make some DWARF for the test.
set asm_file [standard_output_file $srcfile]
Dwarf::assemble $asm_file {
cu {} {
compile_unit {
{low_pc [gdb_target_symbol main] DW_FORM_addr}
{high_pc [gdb_target_symbol main]+0x10000 DW_FORM_addr}
} {
declare_labels integer_label
integer_label: DW_TAG_base_type {
{DW_AT_byte_size 4 DW_FORM_sdata}
{DW_AT_encoding @DW_ATE_signed}
{DW_AT_name integer}
}
DW_TAG_subprogram {
{name main}
{DW_AT_external 1 flag}
{low_pc [gdb_target_symbol main] DW_FORM_addr}
{high_pc [gdb_target_symbol main]+0x10000 DW_FORM_addr}
} {
DW_TAG_variable {
{DW_AT_name bregx}
{DW_AT_type :$integer_label}
{DW_AT_external 1 flag}
{DW_AT_location {
DW_OP_bregx 0xffffffff 0
} SPECIAL_expr}
}
}
}
}
}
if { [prepare_for_testing "failed to prepare" ${testfile} \
[list $srcfile2 $asm_file] {nodebug}] } {
return -1
}
runto_main
# Variable 'bregx' needs to be inside main as for global symbols GDB does not
# support non-trivial DW_AT_location. Former GDB printed internal error here.
gdb_test "p bregx"
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