1 # Copyright 2020-2022 Free Software Foundation, Inc.
3 # This program is free software; you can redistribute it and/or modify
4 # it under the terms of the GNU General Public License as published by
5 # the Free Software Foundation; either version 3 of the License, or
6 # (at your option) any later version.
8 # This program is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License for more details.
13 # You should have received a copy of the GNU General Public License
14 # along with this program. If not, see <http://www.gnu.org/licenses/>.
16 # Create an example function that contains both addresses marked as
17 # statements and addresses marked as non-statements, and then
18 # disassemble the function.
20 # Of particular interest is how 'disassemble /m' handles the
21 # non-statement addresses, we want to ensure that these addresses are
22 # included in the disassembly output. For completeness we test both
23 # 'disassemble /m' and 'disassemble /s'.
27 # This test can only be run on targets which support DWARF-2 and use gas.
28 if {![dwarf2_support]} {
32 # The .c files use __attribute__.
33 if [get_compiler_info] {
40 # Reuse many of the test source files from dw2-inline-header-1.exp.
41 standard_testfile dw2-inline-header-lbls.c dw2-inline-header.S \
44 set asm_file [standard_output_file $srcfile2]
45 Dwarf::assemble $asm_file {
46 global srcdir subdir srcfile srcfile3
47 declare_labels lines_label
57 {stmt_list ${lines_label} DW_FORM_sec_offset}
61 {MACRO_AT_func {main}}
66 lines {version 2 default_is_stmt 1} lines_label {
67 include_dir "${srcdir}/${subdir}"
68 file_name "$srcfile3" 1
71 DW_LNE_set_address $main_start
72 DW_LNS_advance_line 15
75 DW_LNE_set_address line_label_2
79 DW_LNE_set_address line_label_3
83 DW_LNE_set_address line_label_4
87 DW_LNE_set_address line_label_5
91 DW_LNE_set_address line_label_6
96 DW_LNE_set_address $main_end
103 if { [prepare_for_testing "failed to prepare" ${testfile} \
104 [list $srcfile $asm_file] {nodebug} ] } {
112 # Global lines array, maps lines numbers to the list of addresses
113 # associated with that line in the debug output.
116 # Look in the global LINES array and check that the disassembly for
117 # line LINENUM includes the address of LABEL.
118 proc check_disassembly_results { linenum label } {
121 set address [get_hexadecimal_valueof "&${label}" "__unknown__"]
122 set testname "check_disassembly_results $linenum $label"
123 if {![info exists lines($linenum)]} {
124 fail "$testname (no disassembly for $linenum)"
128 # Use a loop to compare the addresses as the addresses extracted
129 # from the disassembly output can be padded with zeros, while the
130 # address of the label will not be padded.
131 set addrs $lines($linenum)
133 if { $a == $address } {
141 foreach_with_prefix opt { m s } {
142 # Disassemble 'main' and split up the disassembly output. We
143 # build an associative array, for each line number store the list
144 # of addresses that were part of its disassembly output.
146 # LINENUM is the line we are currently collecting the disassembly
147 # addresses for, and ADDRS is the list of addresses collected for
152 # Clear the global associative array used to hold the results.
156 gdb_test_multiple "disassemble /${opt} main" "" {
157 -re "Dump of assembler code for function main:\r\n" {
161 -re "^\[^\r\n\]+${srcfile3}:" {
165 -re "^(\\d+)\\s+\[^\r\n\]+\r\n" {
166 if { $linenum != -1 } {
167 set lines($linenum) $addrs
170 set linenum $expect_out(1,string)
174 -re "^(?:=>)?\\s*($hex)\\s*\[^\r\n\]+\r\n" {
175 set address $expect_out(1,string)
176 lappend addrs $address
184 -re "^End of assembler dump\\.\r\n" {
185 if { $linenum != -1 } {
186 set lines($linenum) $addrs
193 -re "^$gdb_prompt $" {
198 # Now check that each label we expect to be associated with each line
199 # shows up in the disassembly output.
200 check_disassembly_results 16 "line_label_1"
201 check_disassembly_results 16 "line_label_2"
202 check_disassembly_results 17 "line_label_3"
203 check_disassembly_results 17 "line_label_4"
204 check_disassembly_results 17 "line_label_5"
205 check_disassembly_results 18 "line_label_6"