gdb/testsuite/gdb.base/dso2dso.exp

# Copyright 2015-2021 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/>.

# The purpose of this testcase is to verify that we can "next" over
# a call to a function provided by one shared library made from another
# shared library, and that GDB stops at the expected location. In this
# case, the call is made from sub1 (provided by libdso1) and we are
# calling sub2 (provided by libdso2).
#
# Note that, while this is not the main purpose of this testcase, it
# also happens to exercise an issue with displaced stepping on amd64
# when libdso1 is mapped at an address greater than 0xffffffff.

if { [skip_shlib_tests] } {
    return 0
}

standard_testfile

set output_dir [standard_output_file {}]

set libdso2 $testfile-dso2
set srcfile_libdso2 $srcdir/$subdir/$libdso2.c
set binfile_libdso2 [standard_output_file $libdso2.so]

set libdso1 $testfile-dso1
set srcfile_libdso1 $srcdir/$subdir/$libdso1.c
set binfile_libdso1 [standard_output_file $libdso1.so]

if { [gdb_compile_shlib $srcfile_libdso2 $binfile_libdso2 \
	[list debug]] != "" } {
  untested "failed to compile shared library 2"
  return -1
}

if { [gdb_compile_shlib $srcfile_libdso1 $binfile_libdso1 \
	[list debug]] != "" } {
  untested "failed to compile shared library 1"
  return -1
}

if { [gdb_compile $srcdir/$subdir/$srcfile $binfile executable \
	[list debug shlib=$binfile_libdso2 shlib=$binfile_libdso1]] != "" } {
  return -1
}

clean_restart $binfile
gdb_load_shlib $binfile_libdso2
gdb_load_shlib $binfile_libdso1

if { ![runto_main] } {
  return -1
}

set bp_location [gdb_get_line_number "STOP HERE" [file tail $srcfile_libdso1]]
gdb_breakpoint ${libdso1}.c:${bp_location}

gdb_continue_to_breakpoint "at call to sub2" \
    ".*sub2 ().*"

gdb_test "next" \
    ".*return 5;.*" \
    "next over call to sub2"