9730e6ccc4
In Dwarf::assemble in dwz.exp, 10 is hard-coded in it,
subprogram {
{name main}
{low_pc main addr}
{high_pc "main + 10" addr}
}
however, the length of main function varies on architectures. The
hard-coded 10 here causes dwz.exp fails on some targets, such as
nios2.
This patch is to add some code to compute the length of function main,
which is similar to what we are doing in entry-values.exp.
gdb/testsuite:
2014-04-26 Yao Qi <yao@codesourcery.com>
* gdb.dwarf2/dwz.exp: Compile main.c to object. Restart GDB
and compute the length of function main. Save it in
$main_length.
(Dwarf::assemble): Use $main_length instead of hard-coded 10.
(top-level): Use gdb_compile to compile objects into
executable and restart GDB. Remove invocation to
prepare_for_testing.
147 lines
3.2 KiB
Text
147 lines
3.2 KiB
Text
# Copyright 2013-2014 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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load_lib dwarf.exp
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# This test can only be run on targets which support DWARF-2 and use gas.
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if {![dwarf2_support]} {
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return 0
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}
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standard_testfile main.c dwz.S
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if {[gdb_compile ${srcdir}/${subdir}/${srcfile} ${binfile}1.o \
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object {nodebug}] != ""} {
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return -1
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}
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# Start GDB and load object file, compute the function length which is
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# needed in the Dwarf Assembler below.
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clean_restart ${testfile}1.o
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set main_length ""
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set test "disassemble main"
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gdb_test_multiple $test $test {
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-re ".*$hex <\\+($decimal)>:\[^\r\n\]+\r\nEnd of assembler dump\.\r\n$gdb_prompt $" {
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set main_length $expect_out(1,string)
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pass $test
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}
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}
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if { $main_length == "" } {
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# Bail out here, because we can't do the following tests if
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# $main_length is unknown.
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return -1
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}
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# Compute the size of the last instruction.
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set test "x/2i main+$main_length"
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gdb_test_multiple $test $test {
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-re ".*($hex) <main\\+$main_length>:\[^\r\n\]+\r\n\[ \]+($hex).*\.\r\n$gdb_prompt $" {
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set start $expect_out(1,string)
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set end $expect_out(2,string)
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set main_length [expr $main_length + $end - $start]
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pass $test
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}
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}
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if { $main_length == "" } {
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# Bail out here, because we can't do the following tests if
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# $main_length is unknown.
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return -1
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}
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gdb_exit
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# Create the DWARF.
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set asm_file [standard_output_file $srcfile2]
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Dwarf::assemble $asm_file {
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declare_labels partial_label int_label int_label2
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global main_length
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extern main
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cu {} {
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partial_label: partial_unit {} {
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subprogram {
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{name main}
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{low_pc main addr}
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{high_pc "main + $main_length" addr}
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}
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}
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}
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cu {} {
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compile_unit {{language @DW_LANG_C}} {
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int_label2: base_type {
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{name int}
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{byte_size 4 sdata}
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{encoding @DW_ATE_signed}
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}
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constant {
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{name the_int}
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{type :$int_label2}
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{const_value 99 data1}
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}
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constant {
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{name other_int}
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{type :$int_label2}
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{const_value 99 data1}
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}
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}
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}
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cu {} {
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compile_unit {{language @DW_LANG_C}} {
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imported_unit {
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{import $partial_label ref_addr}
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}
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int_label: base_type {
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{name int}
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{byte_size 4 sdata}
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{encoding @DW_ATE_signed}
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}
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constant {
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{name the_int}
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{type :$int_label}
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{const_value 23 data1}
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}
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}
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}
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}
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if {[gdb_compile $asm_file ${binfile}2.o object {nodebug}] != ""} {
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return -1
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}
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if {[gdb_compile [list ${binfile}1.o ${binfile}2.o] \
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"${binfile}" executable {}] != ""} {
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return -1
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}
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clean_restart ${testfile}
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if ![runto_main] {
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return -1
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}
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gdb_test "p other_int" " = 99"
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gdb_test "p the_int" " = 23"
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