# Copyright 2011-2020 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/>.  */
#
# Contributed by Ulrich Weigand <ulrich.weigand@de.ibm.com>.
#
# Tests OpenCL function calling conventions.

load_lib opencl.exp

if { [skip_opencl_tests] } {
    unsupported "OpenCL support not detected"
    return 0
}

set testfile "callfuncs"
set clprogram [remote_download target ${srcdir}/${subdir}/${testfile}.cl]

# Compile the generic OpenCL host app
if { [gdb_compile_opencl_hostapp "${clprogram}" "${testfile}" "" ] != "" } {
    untested "failed to compile"
    return -1
}

gdb_exit
gdb_start

# Load the OpenCL app
gdb_reinitialize_dir $srcdir/$subdir
gdb_load ${objdir}/${subdir}/${testfile}

# Set breakpoint at the OpenCL kernel
gdb_test "tbreak testkernel" \
    "" \
    "Set pending breakpoint" \
    ".*Function \"testkernel\" not defined.*Make breakpoint pending.*y or \\\[n\\\]. $" \
    "y"

gdb_run_cmd
gdb_test "" ".*reakpoint.*1.*testkernel.*" "run"

# Continue to the marker
gdb_breakpoint [gdb_get_line_number "marker" "${clprogram}"]
gdb_continue_to_breakpoint "marker"

# Check if the language was switched to opencl
gdb_test "show language" "The current source language is \"auto; currently opencl\"\."

# Prevent multi-threaded execution during inferior calls
gdb_test_no_output "set scheduler-locking on"

# Retrieve some information about the OpenCL version and the availability of extensions
set opencl_version [get_integer_valueof "opencl_version" 0]
set have_cl_khr_fp64 [get_integer_valueof "have_cl_khr_fp64" 0]
set have_cl_khr_fp16 [get_integer_valueof "have_cl_khr_fp16" 0]

# Check function call / return sequence
proc call_test { type var } {
  global opencl_version

  gdb_test "print/d call_${type} (${var}, ${var})" " = 2"
  gdb_test "print/d call_${type}2 (${var}2, ${var}2)" " = \\{2, 4\\}"
  if { ${opencl_version} >= 110 } {
    gdb_test "print/d call_${type}3 (${var}3, ${var}3)" " = \\{2, 4, 6\\}"
  }
  gdb_test "print/d call_${type}4 (${var}4, ${var}4)" " = \\{2, 4, 6, 8\\}"
  gdb_test "print/d call_${type}8 (${var}8, ${var}8)" " = \\{2, 4, 6, 8, 10, 12, 14, 16\\}"
  gdb_test "print/d call_${type}16 (${var}16, ${var}16)" " = \\{2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32\\}"
}

call_test "char" "c"
call_test "uchar" "uc"
call_test "short" "s"
call_test "ushort" "us"
call_test "int" "i"
call_test "uint" "ui"
call_test "long" "l"
call_test "ulong" "ul"
if { ${have_cl_khr_fp16} } {
  call_test "half" "h"
}
call_test "float" "f"
if { ${have_cl_khr_fp64} } {
  call_test "double" "d"
}

# Delete the OpenCL program source
remote_file target delete ${clprogram}