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# Copyright 2020-2021 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/>.
# Create an example function that contains both addresses marked as
# statements and addresses marked as non-statements, and then
# disassemble the function.
#
# Of particular interest is how 'disassemble /m' handles the
# non-statement addresses, we want to ensure that these addresses are
# included in the disassembly output. For completeness we test both
# 'disassemble /m' and 'disassemble /s'.
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
}
# Reuse many of the test source files from dw2-inline-header-1.exp.
standard_testfile dw2-inline-header-lbls.c dw2-inline-header.S \
dw2-inline-header.c
set asm_file [standard_output_file $srcfile2]
Dwarf::assemble $asm_file {
global srcdir subdir srcfile srcfile3
declare_labels lines_label
get_func_info main
cu {} {
compile_unit {
{producer "gcc" }
{language @DW_LANG_C}
{name ${srcfile3}}
{low_pc 0 addr}
{stmt_list ${lines_label} DW_FORM_sec_offset}
} {
subprogram {
{external 1 flag}
{MACRO_AT_func {main}}
}
}
}
lines {version 2 default_is_stmt 1} lines_label {
include_dir "${srcdir}/${subdir}"
file_name "$srcfile3" 1
program {
{DW_LNE_set_address $main_start}
{DW_LNS_advance_line 15}
{DW_LNS_copy}
{DW_LNE_set_address line_label_2}
{DW_LNS_negate_stmt}
{DW_LNS_copy}
{DW_LNE_set_address line_label_3}
{DW_LNS_advance_line 1}
{DW_LNS_copy}
{DW_LNE_set_address line_label_4}
{DW_LNS_negate_stmt}
{DW_LNS_copy}
{DW_LNE_set_address line_label_5}
{DW_LNS_negate_stmt}
{DW_LNS_copy}
{DW_LNE_set_address line_label_6}
{DW_LNS_advance_line 1}
{DW_LNS_negate_stmt}
{DW_LNS_copy}
{DW_LNE_set_address $main_end}
{DW_LNS_copy}
{DW_LNE_end_sequence}
}
}
}
if { [prepare_for_testing "failed to prepare" ${testfile} \
[list $srcfile $asm_file] {nodebug} ] } {
return -1
}
if ![runto_main] {
return -1
}
# Global lines array, maps lines numbers to the list of addresses
# associated with that line in the debug output.
array set lines {}
# Look in the global LINES array and check that the disassembly for
# line LINENUM includes the address of LABEL.
proc check_disassembly_results { linenum label } {
global lines
set address [get_hexadecimal_valueof "&${label}" "__unknown__"]
set testname "check_disassembly_results $linenum $label"
if {![info exists lines($linenum)]} {
fail "$testname (no disassembly for $linenum)"
return
}
# Use a loop to compare the addresses as the addresses extracted
# from the disassembly output can be padded with zeros, while the
# address of the label will not be padded.
set addrs $lines($linenum)
foreach a $addrs {
if { $a == $address } {
pass $testname
return
}
}
fail $testname
}
foreach_with_prefix opt { m s } {
# Disassemble 'main' and split up the disassembly output. We
# build an associative array, for each line number store the list
# of addresses that were part of its disassembly output.
#
# LINENUM is the line we are currently collecting the disassembly
# addresses for, and ADDRS is the list of addresses collected for
# this line.
set linenum -1
set addrs {}
# Clear the global associative array used to hold the results.
unset lines
array set lines {}
gdb_test_multiple "disassemble /${opt} main" "" {
-re "Dump of assembler code for function main:\r\n" {
exp_continue
}
-re "^\[^\r\n\]+${srcfile3}:" {
exp_continue
}
-re "^(\\d+)\\s+\[^\r\n\]+\r\n" {
if { $linenum != -1 } {
set lines($linenum) $addrs
set addrs {}
}
set linenum $expect_out(1,string)
exp_continue
}
-re "^(?:=>)?\\s*($hex)\\s*\[^\r\n\]+\r\n" {
set address $expect_out(1,string)
lappend addrs $address
exp_continue
}
-re "^\\s*\r\n" {
exp_continue
}
-re "^End of assembler dump\\.\r\n" {
if { $linenum != -1 } {
set lines($linenum) $addrs
set linenum -1
set addrs {}
}
exp_continue
}
-re "^$gdb_prompt $" {
# All done.
}
}
# Now check that each label we expect to be associated with each line
# shows up in the disassembly output.
check_disassembly_results 16 "line_label_1"
check_disassembly_results 16 "line_label_2"
check_disassembly_results 17 "line_label_3"
check_disassembly_results 17 "line_label_4"
check_disassembly_results 17 "line_label_5"
check_disassembly_results 18 "line_label_6"
}
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