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- # Copyright 2020-2022 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/>.
- # 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"
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