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# Copyright 2021-2022 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 DW_AT_location attribute referencing the .debug_loc section using
# the DW_FORM_sec_offset form.
load_lib dwarf.exp
if {![dwarf2_support]} {
return 0
}
# Test with 32-bit and 64-bit DWARF.
foreach_with_prefix is_64 {false true} {
if { $is_64 } {
standard_testfile .c -dw64.S
set testfile ${testfile}-dw64
} else {
standard_testfile .c -dw32.S
set testfile ${testfile}-dw32
}
lassign [function_range func1 $srcdir/$subdir/$srcfile] \
func1_addr func1_len
lassign [function_range func2 $srcdir/$subdir/$srcfile] \
func2_addr func2_len
set asm_file [standard_output_file $srcfile2]
Dwarf::assemble $asm_file {
global func1_addr func1_len
global func2_addr func2_len
global is_64
set cu_version 4
cu {
version $cu_version
is_64 $is_64
} {
declare_labels int_type1
declare_labels foo_location_list
DW_TAG_compile_unit {
} {
int_type1: DW_TAG_base_type {
{DW_AT_byte_size 4 DW_FORM_data1}
{DW_AT_encoding @DW_ATE_signed}
{DW_AT_name "int"}
}
DW_TAG_variable {
{DW_AT_name "foo"}
{DW_AT_location $foo_location_list DW_FORM_sec_offset}
{DW_AT_type :$int_type1}
}
DW_TAG_subprogram {
{DW_AT_name "func1"}
{DW_AT_low_pc $func1_addr}
{DW_AT_high_pc $func1_len DW_FORM_udata}
}
DW_TAG_subprogram {
{DW_AT_name "func2"}
{DW_AT_low_pc $func2_addr}
{DW_AT_high_pc $func2_len DW_FORM_udata}
}
}
}
# Generate a .debug_loc contribution.
loc {
cu_is_64 $is_64
cu_version $cu_version
} {
foo_location_list:
entry $func1_addr "$func1_addr + $func1_len" {
DW_OP_constu 0x123456
DW_OP_stack_value
}
entry $func2_addr "$func2_addr + $func2_len" {
DW_OP_constu 0x234567
DW_OP_stack_value
}
}
}
if { [prepare_for_testing "failed to prepare" ${testfile} \
[list $srcfile $asm_file] {nodebug}] } {
return -1
}
if { ![runto_main] } {
return
}
gdb_breakpoint "func1"
gdb_breakpoint "func2"
gdb_continue_to_breakpoint "func1"
with_test_prefix "at func1" {
gdb_test "print /x foo" " = 0x123456"
}
gdb_continue_to_breakpoint "func2"
with_test_prefix "at func2" {
gdb_test "print /x foo" " = 0x234567"
}
}
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