| # Copyright (C) 2017-2021 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 the new DW_OP_LLVM_extend operation. |
| # |
| # The test uses a composite location description, where all the pieces |
| # are allocated in the same register by using the new operation. |
| |
| load_lib dwarf.exp |
| |
| # This test can only be run on targets which support DWARF-2 and use gas. |
| if {![dwarf2_support]} { |
| return 0 |
| } |
| |
| # Choose suitable integer registers for the test. |
| |
| set dwarf_regnum 0 |
| |
| if { [is_aarch64_target] } { |
| set regname x0 |
| } elseif { [is_aarch32_target] |
| || [istarget "s390*-*-*" ] |
| || [istarget "powerpc*-*-*"] |
| || [istarget "rs6000*-*-aix*"] } { |
| set regname r0 |
| } elseif { [is_x86_like_target] } { |
| set regname eax |
| } elseif { [is_amd64_regs_target] } { |
| set regname rax |
| } else { |
| verbose "Skipping ${gdb_test_file_name}." |
| return |
| } |
| |
| standard_testfile var-access.c ${gdb_test_file_name}-dw.S |
| |
| # Make some DWARF for the test. |
| |
| set asm_file [standard_output_file $srcfile2] |
| Dwarf::assemble $asm_file { |
| global dwarf_regnum regname srcdir subdir srcfile |
| set buf_src [gdb_target_symbol buf] |
| |
| set main_result [function_range main ${srcdir}/${subdir}/${srcfile}] |
| set main_start [lindex $main_result 0] |
| set main_length [lindex $main_result 1] |
| |
| cu {} { |
| DW_TAG_compile_unit { |
| {DW_AT_name var-access.c} |
| {DW_AT_comp_dir /tmp} |
| } { |
| declare_labels int_type_label char_type_label array_type_label |
| |
| # define char type |
| char_type_label: DW_TAG_base_type { |
| {DW_AT_name "char"} |
| {DW_AT_encoding @DW_ATE_signed} |
| {DW_AT_byte_size 1 DW_FORM_sdata} |
| } |
| |
| int_type_label: DW_TAG_base_type { |
| {DW_AT_name "int"} |
| {DW_AT_encoding @DW_ATE_signed} |
| {DW_AT_byte_size 4 DW_FORM_sdata} |
| } |
| |
| array_type_label: DW_TAG_array_type { |
| {DW_AT_type :$char_type_label} |
| } { |
| DW_TAG_subrange_type { |
| {DW_AT_type :$int_type_label} |
| {DW_AT_upper_bound 7 DW_FORM_udata} |
| } |
| } |
| |
| DW_TAG_subprogram { |
| {DW_AT_name main} |
| {DW_AT_low_pc $main_start addr} |
| {DW_AT_high_pc $main_length data8} |
| } { |
| |
| # All array elements are in first byte of REGNAME register. |
| DW_TAG_variable { |
| {DW_AT_name var_array_1} |
| {DW_AT_type :$array_type_label} |
| {DW_AT_location { |
| DW_OP_regx $dwarf_regnum |
| DW_OP_LLVM_extend 8 8 |
| } SPECIAL_expr} |
| } |
| |
| # All array elements are in fourth byte of REGNAME register. |
| DW_TAG_variable { |
| {DW_AT_name var_array_2} |
| {DW_AT_type :$array_type_label} |
| {DW_AT_location { |
| DW_OP_regx $dwarf_regnum |
| DW_OP_LLVM_offset_constu 3 |
| DW_OP_LLVM_extend 8 8 |
| } SPECIAL_expr} |
| } |
| } |
| } |
| } |
| } |
| |
| if { [prepare_for_testing ${testfile}.exp ${testfile} \ |
| [list $srcfile $asm_file] {nodebug}] } { |
| return -1 |
| } |
| |
| if ![runto_main] { |
| return -1 |
| } |
| |
| gdb_test_no_output "set var \$$regname = 0x04030201" "init reg" |
| |
| # Determine byte order. |
| set endian [get_endianness] |
| |
| switch $endian { |
| little {set val "0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1"} |
| big {set val "0x4, 0x4, 0x4, 0x4, 0x4, 0x4, 0x4, 0x4"} |
| } |
| |
| gdb_test "print/x var_array_1" " = \\{${val}\\}" "var_array_1 print" |
| |
| switch $endian { |
| little {set val "0x4, 0x4, 0x4, 0x4, 0x4, 0x4, 0x4, 0x4"} |
| big {set val "0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1"} |
| } |
| |
| gdb_test "print/x var_array_2" " = \\{${val}\\}" "var_array_2 print" |