# Copyright 2009-2017 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 multi-exec / multi-process features that work for all configurations,
# even ones that cannot run multiple processes simultaneously.

set testfile "multi-arch-exec"

# The plain remote target can't do multiple inferiors.
if [target_info exists use_gdb_stub] {
    return
}

# The 64-bit compile may succeed for i386-linux, but gdb won't be able
# to load the file.
if [istarget "i?86-*linux*"] {
    return
}

# Can't use standard_testfile, we want executables with specialized
# names.
set exec1 "multi-arch-exec"
set srcfile1 multi-arch-exec.c
set binfile1 [standard_output_file ${exec1}]

set exec2 "multi-arch-exec-hello"
set srcfile2 hello.c
set binfile2 [standard_output_file ${exec2}]

# Build two executables, one for each arch.

if [istarget "s390*-*-*"] {
    set march1 "-m64"
    set march2 "-m31"
} elseif { [istarget "aarch64*-*-*"] } {
    set march1 ""
    set march2 ""
} else {
    set march1 "-m64"
    set march2 "-m32"
}

if { [prepare_for_testing "failed to prepare" ${exec1} "${srcfile1}" \
	  [list debug \
	       additional_flags=${march1}]] } {
    return -1
}

set options [list debug]

if { [istarget "aarch64*-*-*"] } {
    if {[info exists ARM_CC_FOR_TARGET]} {
	lappend options "compiler=${ARM_CC_FOR_TARGET}"
    } else {
	unsupported "ARM compiler is not known"
	return -1
    }
} else {
    lappend options "additional_flags=${march2}"
}

if { [prepare_for_testing "failed to prepare" ${exec2} "${srcfile2}" \
	  $options] } {
    return -1
}

proc do_test { mode } {
	global exec1

	clean_restart ${exec1}
	if ![runto_main] then {
	    fail "couldn't run to main"
	    return -1
	}

	gdb_test_no_output "set follow-exec-mode $mode"

	# Test that GDB updates the target description / arch successfuly
	# after the exec.
	gdb_test "continue" "Breakpoint 1, main.*" "continue across exec that changes architecture"
}

foreach follow_exec_mode {"same" "new"} {
    do_test $follow_exec_mode
}