# Copyright 2009-2019 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"

# The plain remote target can't do multiple inferiors.
if [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 "ma-hello"
set srcfile1 hello.c
set binfile1 [standard_output_file ${exec1}]

set exec2 "ma-hangout"
set srcfile2 hangout.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
}

# Start inferior 1

clean_restart ${exec1}
if ![runto_main] then {
    fail "starting inferior 1"
}

# Add and start inferior 2

gdb_test "add-inferior" "Added inferior 2.*" "add empty inferior 2"
gdb_test "inferior 2" "Switching to inferior 2.*" "switch to inferior 2"
gdb_load ${binfile2}

if ![runto_main] then {
    fail "starting inferior 2"
}

# Check we do have two inferiors loaded.

gdb_test "info inferiors" \
    "Executable.*${exec1}.*${exec2}.*"

# Now select inferior 2, and trigger an event in inferior 1.  This
# tries to check that GDB doesn't incorrectly uses the architecture of
# inferior 2 when parsing the expedited registers in a stop reply for
# inferior 1 (when remote debugging).

gdb_test_no_output "set schedule-multiple on"

with_test_prefix "inf1 event with inf2 selected" {
    gdb_test "inferior 2" "Switching to inferior 2.*thread 2\.1.*main.*${srcfile2}.*"
    gdb_test "b hello_loop" "Breakpoint .* at .*${srcfile1}.*"
    gdb_test "c" " hello_loop.*" "continue to hello_loop"
}

delete_breakpoints

# Same, but the other way around: select inferior 1 and trigger an
# event in inferior 2.

with_test_prefix "inf2 event with inf1 selected" {
    gdb_test "inferior 1" "Switching to inferior 1.*thread 1\.1.*hello_loop.*${srcfile1}.*"
    gdb_test "b hangout_loop" "Breakpoint .* at .*${srcfile2}.*"
    gdb_test "c" " hangout_loop.*" "continue to hangout_loop"
}