| # Copyright 2020-2021 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/>. |
| |
| # Setup a line table where: |
| # |
| # | | | | | Inline | Inline | |
| # | Addr | File | Line | Stmt | Rng A | Rng B | |
| # |------|------|------|------|--------|--------| |
| # | 1 | 1 | 16 | Y | | | |
| # | 2 | 1 | 17 | Y | | | |
| # | 3 | 2 | 21 | Y | X | | |
| # | 4 | 2 | 22 | Y | X | | |
| # | 4 | 1 | 18 | N | X | | |
| # | 5 | 2 | 23 | N | X | X | |
| # | 6 | 1 | 24 | Y | | | |
| # | 7 | 1 | END | Y | | | |
| # |------|------|------|------|--------|--------| |
| # |
| # Places a brekpoint at file 2, line 22. Previously GDB would discard |
| # the line table entry for this line due to switching files for the |
| # file 1, line 18 non-statement line. After patching however, GDB now |
| # discards the file 1, line 18 entry instead, and the breakpoint at |
| # line 22 should succeed. |
| # |
| # The two inlined subroutine ranges 'A' and 'B' represent two possible |
| # ways that a compiler might represent this siuatio in the DWARF. |
| # |
| # Range 'B' is something that has been seen in the wild using GCC 8.2. |
| # In this case the compilers range information is clearly wrong, but |
| # this shouldn't impact the main point of the test. |
| # |
| # Range 'A' is a hypothetical case of how the compiler might choose to |
| # represent this range, this has never been seen in the wild, but is |
| # an improved debug experiece over range 'B'. However, if we ever run |
| # in to the situation where GDB can support the range 'A' test, or |
| # support some real DWARF seen in the wild, then the range 'A' case |
| # should be dropped in favour of supporting real world cases. This is |
| # included here as it "just worked" once the range 'B' case was |
| # working. |
| |
| load_lib dwarf.exp |
| |
| # This test can only be run on targets which support DWARF-2 and use gas. |
| if {![dwarf2_support]} { |
| return 0 |
| } |
| |
| # The .c files use __attribute__. |
| if [get_compiler_info] { |
| return -1 |
| } |
| if !$gcc_compiled { |
| return 0 |
| } |
| |
| # Prepare and run the test. |
| proc do_test { start_label func_name tag } { |
| global srcfile srcfile2 srcfile3 srcfile4 testfile |
| |
| standard_testfile dw2-inline-header-lbls.c dw2-inline-header-${tag}.S \ |
| dw2-inline-header.c dw2-inline-header.h |
| |
| set build_options {nodebug optimize=-O1} |
| |
| set asm_file [standard_output_file $srcfile2] |
| Dwarf::assemble $asm_file { |
| global srcdir subdir srcfile srcfile3 srcfile4 testfile |
| upvar build_options build_options |
| upvar start_label start_label |
| declare_labels lines_label callee_subprog_label |
| |
| get_func_info main $build_options |
| |
| cu {} { |
| compile_unit { |
| {producer "gcc" } |
| {language @DW_LANG_C} |
| {name ${srcfile3}} |
| {low_pc 0 addr} |
| {stmt_list ${lines_label} DW_FORM_sec_offset} |
| } { |
| callee_subprog_label: subprogram { |
| {external 1 flag} |
| {name callee} |
| {inline 3 data1} |
| } |
| subprogram { |
| {external 1 flag} |
| {name main} |
| {low_pc $main_start addr} |
| {high_pc "$main_start + $main_len" addr} |
| } { |
| inlined_subroutine { |
| {abstract_origin %$callee_subprog_label} |
| {low_pc $start_label addr} |
| {high_pc line_label_6 addr} |
| {call_file 1 data1} |
| {call_line 18 data1} |
| } |
| } |
| } |
| } |
| |
| lines {version 2 default_is_stmt 1} lines_label { |
| include_dir "${srcdir}/${subdir}" |
| file_name "$srcfile3" 1 |
| file_name "$srcfile4" 1 |
| |
| program { |
| {DW_LNE_set_address line_label_1} |
| {DW_LNS_advance_line 15} |
| {DW_LNS_copy} |
| |
| {DW_LNE_set_address line_label_2} |
| {DW_LNS_advance_line 1} |
| {DW_LNS_copy} |
| |
| {DW_LNS_set_file 2} |
| {DW_LNE_set_address line_label_3} |
| {DW_LNS_advance_line 4} |
| {DW_LNS_copy} |
| |
| {DW_LNE_set_address line_label_4} |
| {DW_LNS_advance_line 1} |
| {DW_LNS_copy} |
| |
| {DW_LNS_advance_line -4} |
| {DW_LNS_set_file 1} |
| {DW_LNS_negate_stmt} |
| {DW_LNS_copy} |
| |
| {DW_LNS_set_file 2} |
| {DW_LNE_set_address line_label_5} |
| {DW_LNS_advance_line 5} |
| {DW_LNS_copy} |
| |
| {DW_LNS_negate_stmt} |
| {DW_LNS_set_file 1} |
| {DW_LNE_set_address line_label_6} |
| {DW_LNS_advance_line 1} |
| {DW_LNS_copy} |
| |
| {DW_LNE_set_address line_label_7} |
| {DW_LNE_end_sequence} |
| } |
| } |
| } |
| |
| if { [prepare_for_testing "failed to prepare" ${testfile}-${tag} \ |
| [list $srcfile $asm_file] $build_options] } { |
| return -1 |
| } |
| |
| if ![runto_main] { |
| return -1 |
| } |
| |
| # Delete all breakpoints so that the output of "info breakpoints" |
| # below will only contain a single breakpoint. |
| delete_breakpoints |
| |
| # Place a breakpoint within the function in the header file. |
| gdb_breakpoint "${srcfile4}:22" |
| |
| # Check that the breakpoint was placed where we expected. It should |
| # appear at the requested line. When the bug in GDB was present the |
| # breakpoint would be placed on one of the following lines instead. |
| gdb_test "info breakpoints" \ |
| ".* in $func_name at \[^\r\n\]+${srcfile4}:22\\y.*" \ |
| "info breakpoints, $tag" |
| } |
| |
| do_test line_label_3 "callee" "range-a" |
| do_test line_label_5 "main" "range-b" |