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# Copyright 2015-2024 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/>.
load_lib dwarf.exp
# Test DW_TAG_compile_unit with no children and with neither DW_AT_low_pc nor
# DW_AT_high_pc but with DW_AT_ranges instead.
# This test can only be run on targets which support DWARF-2 and use gas.
require dwarf2_support
# The .c files use __attribute__.
require is_c_compiler_gcc
standard_testfile .c -dw.S
set asm_file [standard_output_file $srcfile2]
Dwarf::assemble $asm_file {
global srcdir subdir srcfile srcfile2
declare_labels ranges_label
declare_labels L
# Find start address and length for our functions.
set main_func \
[function_range main [list ${srcdir}/${subdir}/$srcfile]]
set frame2_func \
[function_range frame2 [list ${srcdir}/${subdir}/$srcfile]]
set frame3_func \
[function_range frame3 [list ${srcdir}/${subdir}/$srcfile]]
# Very simple info for this test program. We don't care about
# this information being correct (w.r.t. function / argument types)
# just so long as the compilation using makes use of the
# .debug_ranges data then the test achieves its objective.
cu { label cu_label } {
compile_unit {
{language @DW_LANG_C}
{name dw-ranges-base.c}
{stmt_list $L DW_FORM_sec_offset}
{ranges ${ranges_label} DW_FORM_sec_offset}
} {
subprogram {
{external 1 flag}
{name main}
}
subprogram {
{external 1 flag}
{name frame2}
}
subprogram {
{external 1 flag}
{name frame3}
}
}
}
lines {version 2} L {
include_dir "${srcdir}/${subdir}"
file_name "$srcfile" 1
# Generate simple line table program. The line table
# information contained here is not correct, and we really
# don't care, just so long as each function has some line
# table data associated with it. We do make use of the fake
# line numbers that we pick here in the tests below.
program {
DW_LNE_set_address [lindex $main_func 0]
DW_LNS_advance_line 10
DW_LNS_copy
DW_LNS_advance_pc [lindex $main_func 1]
DW_LNE_end_sequence
DW_LNE_set_address [lindex $frame2_func 0]
DW_LNS_advance_line 20
DW_LNS_copy
DW_LNS_advance_pc [lindex $frame2_func 1]
DW_LNE_end_sequence
DW_LNE_set_address [lindex $frame3_func 0]
DW_LNS_advance_line 30
DW_LNS_copy
DW_LNS_advance_pc [lindex $frame3_func 1]
DW_LNE_end_sequence
}
}
# Generate ranges data. This is the point of this whole test
# file, we must have multiple bases specified, so we use a new
# base for each function.
ranges {is_64 [is_64_target]} {
ranges_label: sequence {
base [lindex $main_func 0]
range 0 [lindex $main_func 1]
base [lindex $frame2_func 0]
range 0 [lindex $frame2_func 1]
base [lindex $frame3_func 0]
range 0 [lindex $frame3_func 1]
}
}
aranges {} cu_label {
arange {} [lindex $main_func 0] [lindex $main_func 1]
arange {} [lindex $frame2_func 0] [lindex $frame2_func 1]
arange {} [lindex $frame3_func 0] [lindex $frame3_func 1]
}
}
if { [prepare_for_testing "failed to prepare" ${testfile} \
[list $srcfile $asm_file] {nodebug}] } {
return -1
}
if ![runto_main] {
return -1
}
# Make use of the line numbers we faked in the .debug_line table above.
gdb_test "info line main" \
"Line 11 of .* starts at address .* and ends at .*"
gdb_test "info line frame2" \
"Line 21 of .* starts at address .* and ends at .*"
gdb_test "info line frame3" \
"Line 31 of .* starts at address .* and ends at .*"
# Ensure that the line table correctly tracks the end of sequence markers.
set end_seq_count 0
set prev -1
set seq_count 0
gdb_test_multiple "maint info line-table gdb.dwarf2/dw2-ranges-base.c" \
"count END markers in line table" {
-re "^$decimal\[ \t\]+$decimal\[ \t\]+$hex\[ \t\]+$hex\(\[ \t\]+Y\)? *\r\n" {
if { $prev != -1 } {
gdb_assert "$prev == 1" \
"prev of normal entry at $seq_count is end marker"
}
set prev 0
incr seq_count
exp_continue
}
-re "^$decimal\[ \t\]+END\[ \t\]+$hex\[ \t\]+$hex\(\[ \t\]+Y\)? *\r\n" {
if { $prev != -1 } {
gdb_assert "$prev == 0" \
"prev of end marker at $seq_count is normal entry"
}
set prev 1
incr seq_count
incr end_seq_count
exp_continue
}
-re "^\r\n" {
# Empty lines between tables.
exp_continue
}
-re "^$gdb_prompt $" {
gdb_assert [expr $end_seq_count == 3] $gdb_test_name
}
-re ".*linetable: \\(\\(struct linetable \\*\\) 0x0\\):\r\nNo line table.\r\n" {
exp_continue
}
-re ".*linetable: \\(\\(struct linetable \\*\\) $hex\\):\r\nINDEX\[ \t\]+LINE\[ \t\]+REL-ADDRESS\[ \t\]+UNREL-ADDRESS\[ \t\]+IS-STMT\[ \t\]PROLOGUE-END\[ \t\]EPILOGUE-BEGIN *\r\n" {
exp_continue
}
}
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