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# Copyright 2019-2020 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/>.
# This test shows the importance of not corrupting the order of line
# table information. When multiple lines are given for the same
# address the compiler usually lists these in the order in which we
# would expect to encounter them. When stepping through nested inline
# frames the last line given for an address is assumed by GDB to be
# the most inner frame, and this is what GDB displays.
#
# If we corrupt the order of the line table entries then GDB will
# display the wrong line as being the inner most frame.
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
}
standard_testfile .c .S
set asm_file [standard_output_file $srcfile2]
Dwarf::assemble $asm_file {
global srcdir subdir srcfile srcfile2
declare_labels ranges_label lines_label foo_prog
lassign [function_range main [list ${srcdir}/${subdir}/$srcfile]] \
main_start main_len
set main_end "$main_start + $main_len"
lassign [function_range bar [list ${srcdir}/${subdir}/$srcfile]] \
bar_start bar_len
set bar_end "$bar_start + $bar_len"
set call_line [gdb_get_line_number "main call foo"]
cu {} {
compile_unit {
{language @DW_LANG_C}
{name dw2-inline-stepping.c}
{low_pc 0 addr}
{stmt_list ${lines_label} DW_FORM_sec_offset}
{ranges ${ranges_label} DW_FORM_sec_offset}
} {
subprogram {
{external 1 flag}
{name bar}
{low_pc $bar_start addr}
{high_pc "$bar_start + $bar_len" addr}
}
foo_prog: subprogram {
{name foo}
{inline 3 data1}
}
subprogram {
{external 1 flag}
{name main}
{low_pc $main_start addr}
{high_pc "$main_start + $main_len" addr}
} {
inlined_subroutine {
{abstract_origin %$foo_prog}
{low_pc main_label2 addr}
{high_pc main_label3 addr}
{call_file 1 data1}
{call_line $call_line data1}
}
}
}
}
lines {version 2} lines_label {
include_dir "${srcdir}/${subdir}"
file_name "$srcfile" 1
program {
{DW_LNE_set_address $main_start}
{line [gdb_get_line_number "main prologue"]}
{DW_LNS_copy}
{DW_LNE_set_address main_label}
{line [gdb_get_line_number "main set global_var"]}
{DW_LNS_copy}
{DW_LNE_set_address main_label2}
{line [gdb_get_line_number "main call foo"]}
{DW_LNS_copy}
{DW_LNE_set_address main_label2}
{line [gdb_get_line_number "foo call bar"]}
{DW_LNS_copy}
{DW_LNE_set_address $main_end}
{DW_LNE_end_sequence}
{DW_LNE_set_address $bar_start}
{line [gdb_get_line_number "bar prologue"]}
{DW_LNS_copy}
{DW_LNE_set_address bar_label}
{line [gdb_get_line_number "bar return global_var"]}
{DW_LNS_copy}
{DW_LNE_set_address $bar_end}
{DW_LNE_end_sequence}
}
}
ranges {is_64 [is_64_target]} {
ranges_label: sequence {
{range {${main_start}} ${main_end}}
{range {${bar_start}} ${bar_end}}
}
}
}
if { [prepare_for_testing "failed to prepare" ${testfile} \
[list $srcfile $asm_file] {nodebug}] } {
return -1
}
if ![runto_main] {
return -1
}
set patterns [list "main call foo" \
"foo call bar" \
"bar return global_var"]
foreach p $patterns {
gdb_test "step" "/\\* $p \\*/" \
"step to '$p'"
}
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