[PATCH 3/8] [gdb/testsuite] Add test-case gdb.dwarf2/dw2-lines.exp
Tom de Vries
tdevries@suse.de
Mon Oct 25 10:29:55 GMT 2021
Add a new test-case gdb.dwarf2/dw2-lines.exp that tests various.debug_line
sections.
Tested on x86_64-linux.
---
gdb/testsuite/gdb.dwarf2/dw2-lines.c | 45 +++++++
gdb/testsuite/gdb.dwarf2/dw2-lines.exp | 156 +++++++++++++++++++++++++
gdb/testsuite/lib/dwarf.exp | 6 +
3 files changed, 207 insertions(+)
create mode 100644 gdb/testsuite/gdb.dwarf2/dw2-lines.c
create mode 100644 gdb/testsuite/gdb.dwarf2/dw2-lines.exp
diff --git a/gdb/testsuite/gdb.dwarf2/dw2-lines.c b/gdb/testsuite/gdb.dwarf2/dw2-lines.c
new file mode 100644
index 00000000000..5bfa5975724
--- /dev/null
+++ b/gdb/testsuite/gdb.dwarf2/dw2-lines.c
@@ -0,0 +1,45 @@
+/*
+ Copyright 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/>. */
+
+void
+foo (int x)
+{
+
+}
+
+void
+bar (void)
+{
+ asm ("bar_label: .globl bar_label");
+ foo (1);
+ asm ("bar_label_2: .globl bar_label_2");
+ foo (2);
+ asm ("bar_label_3: .globl bar_label_3");
+ foo (3);
+ asm ("bar_label_4: .globl bar_label_4");
+ foo (4);
+ asm ("bar_label_5: .globl bar_label_5");
+}
+
+int
+main (void)
+{
+ asm ("main_label: .globl main_label");
+
+ bar ();
+
+ return 0;
+}
diff --git a/gdb/testsuite/gdb.dwarf2/dw2-lines.exp b/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
new file mode 100644
index 00000000000..cde602fd468
--- /dev/null
+++ b/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
@@ -0,0 +1,156 @@
+# Copyright 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 line number information in various configurations.
+
+load_lib dwarf.exp
+
+# This test can only be run on targets which support DWARF-2 and use gas.
+require dwarf2_support 1
+
+standard_testfile .c -dw.S
+
+with_shared_gdb {
+ set func_info_vars \
+ [concat \
+ [get_func_info main] \
+ [get_func_info bar]]
+}
+
+# Helper function.
+proc line_for { l } {
+ global srcfile
+ set line [gdb_get_line_number "$l:" $srcfile]
+ return [expr $line + 1]
+}
+
+# Execute test.
+proc test_1 { _cv _cdw64 _lv _ldw64 } {
+ global srcfile srcfile2 testfile
+ global cv cdw64 lv ldw64
+ set cv $_cv
+ set cdw64 $_cdw64
+ set lv $_lv
+ set ldw64 $_ldw64
+
+ set asm_file [standard_output_file $srcfile2]
+ Dwarf::assemble $asm_file {
+ declare_labels Llines
+ global srcdir subdir srcfile cv cdw64 lv ldw64
+ global func_info_vars
+ foreach var $func_info_vars {
+ global $var
+ }
+
+ cu { version $cv is_64 $cdw64 } {
+ compile_unit {
+ {language @DW_LANG_C}
+ {name $srcfile}
+ {stmt_list $Llines DW_FORM_sec_offset}
+ } {
+ subprogram {
+ {external 1 flag}
+ {name main}
+ {low_pc $main_start addr}
+ {high_pc "$main_start + $main_len" addr}
+ }
+ subprogram {
+ {external 1 flag}
+ {name bar}
+ {low_pc $bar_start addr}
+ {high_pc "$bar_start + $bar_len" addr}
+ }
+ }
+ }
+
+ lines [list version $lv is_64 $ldw64] Llines {
+ include_dir "${srcdir}/${subdir}"
+ file_name "$srcfile" 1
+
+ program {
+ {DW_LNE_set_address bar_label}
+ {line [line_for bar_label]}
+ {DW_LNS_copy}
+
+ {DW_LNE_set_address bar_label_2}
+ {line [line_for bar_label_2]}
+ {DW_LNS_copy}
+
+ {DW_LNE_set_address bar_label_3}
+ {line [line_for bar_label_3]}
+ {DW_LNS_copy}
+
+ {DW_LNE_set_address bar_label_4}
+ {line [line_for bar_label_4]}
+ {DW_LNS_copy}
+
+ {DW_LNE_set_address bar_label_5}
+ {DW_LNE_end_sequence}
+ }
+ }
+ }
+
+ if { [prepare_for_testing "failed to prepare" ${testfile} \
+ [list $srcfile $asm_file] {nodebug}] } {
+ return -1
+ }
+
+ if ![runto_main] {
+ return -1
+ }
+
+ gdb_breakpoint "bar"
+ gdb_continue_to_breakpoint "foo \\(1\\)"
+
+ gdb_test "next" "foo \\(2\\).*" "next to foo (2)"
+ gdb_test "next" "foo \\(3\\).*" "next to foo (3)"
+ gdb_test "next" "foo \\(4\\).*" "next to foo (4)"
+}
+
+
+# Add unique test prefix.
+proc test { cv cdw64 lv ldw64 } {
+ with_test_prefix cv=$cv {
+ with_test_prefix cdw=[expr $cdw64 ? 64 : 32] {
+ with_test_prefix lv=$lv {
+ with_test_prefix ldw=[expr $ldw64 ? 64 : 32] {
+ test_1 $cv $cdw64 $lv $ldw64
+ }
+ }
+ }
+ }
+}
+
+set cv_low 2
+set cv_high 4
+
+set lv_low 2
+set lv_high 3
+
+for { set cv $cv_low } { $cv <= $cv_high } { incr cv } {
+ for { set lv $lv_low } { $lv <= $lv_high } { incr lv } {
+ # I'm not sure if it makes sense to have a dwarf vx CU with
+ # a dwarf vx+1 line unit.
+ if { $lv > $lv } {
+ continue
+ }
+
+ foreach cdw64 { 0 1 } {
+ foreach ldw64 { 0 1 } {
+ test $cv $cdw64 $lv $ldw64
+ }
+ }
+ }
+}
diff --git a/gdb/testsuite/lib/dwarf.exp b/gdb/testsuite/lib/dwarf.exp
index 499dc257805..3dcaf06c2ef 100644
--- a/gdb/testsuite/lib/dwarf.exp
+++ b/gdb/testsuite/lib/dwarf.exp
@@ -405,6 +405,7 @@ proc function_range { func src {options {debug}} } {
# Extract the start, length, and end for function called NAME and
# create suitable variables in the callers scope.
+# Return the list of created variables.
proc get_func_info { name {options {debug}} } {
global srcdir subdir srcfile
@@ -417,6 +418,11 @@ proc get_func_info { name {options {debug}} } {
${options}] \
func_start func_len
set func_end "$func_start + $func_len"
+
+ return [list \
+ "${name}_start" \
+ "${name}_len" \
+ "${name}_end"]
}
# A DWARF assembler.
--
2.26.2
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