##
##  Copyright(c) 2020-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
##
##  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 2 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/>.
##

hexagon_ss = ss.source_set()

hex_common_py = 'hex_common.py'
attribs_def = meson.current_source_dir() / 'attribs_def.h.inc'
gen_tcg_h = meson.current_source_dir() / 'gen_tcg.h'

#
#  Step 1
#  We use a C program to create semantics_generated.pyinc
#
gen_semantics = executable(
    'gen_semantics',
    'gen_semantics.c',
    native: true, build_by_default: false)

semantics_generated = custom_target(
    'semantics_generated.pyinc',
    output: 'semantics_generated.pyinc',
    command: [gen_semantics, '@OUTPUT@'],
)
hexagon_ss.add(semantics_generated)

#
# Step 2
# We use Python scripts to generate the following files
#     shortcode_generated.h.inc
#     helper_protos_generated.h.inc
#     tcg_funcs_generated.c.inc
#     tcg_func_table_generated.c.inc
#     helper_funcs_generated.c.inc
#     printinsn_generated.h.inc
#     op_regs_generated.h.inc
#     op_attribs_generated.h.inc
#     opcodes_def_generated.h.inc
#
shortcode_generated = custom_target(
    'shortcode_generated.h.inc',
    output: 'shortcode_generated.h.inc',
    depends: [semantics_generated],
    depend_files: [hex_common_py, attribs_def],
    command: [python, files('gen_shortcode.py'), semantics_generated, attribs_def, '@OUTPUT@'],
)
hexagon_ss.add(shortcode_generated)

helper_protos_generated = custom_target(
    'helper_protos_generated.h.inc',
    output: 'helper_protos_generated.h.inc',
    depends: [semantics_generated],
    depend_files: [hex_common_py, attribs_def, gen_tcg_h],
    command: [python, files('gen_helper_protos.py'), semantics_generated, attribs_def, gen_tcg_h, '@OUTPUT@'],
)
hexagon_ss.add(helper_protos_generated)

tcg_funcs_generated = custom_target(
    'tcg_funcs_generated.c.inc',
    output: 'tcg_funcs_generated.c.inc',
    depends: [semantics_generated],
    depend_files: [hex_common_py, attribs_def, gen_tcg_h],
    command: [python, files('gen_tcg_funcs.py'), semantics_generated, attribs_def, gen_tcg_h, '@OUTPUT@'],
)
hexagon_ss.add(tcg_funcs_generated)

tcg_func_table_generated = custom_target(
    'tcg_func_table_generated.c.inc',
    output: 'tcg_func_table_generated.c.inc',
    depends: [semantics_generated],
    depend_files: [hex_common_py, attribs_def],
    command: [python, files('gen_tcg_func_table.py'), semantics_generated, attribs_def, '@OUTPUT@'],
)
hexagon_ss.add(tcg_func_table_generated)

helper_funcs_generated = custom_target(
    'helper_funcs_generated.c.inc',
    output: 'helper_funcs_generated.c.inc',
    depends: [semantics_generated],
    depend_files: [hex_common_py, attribs_def, gen_tcg_h],
    command: [python, files('gen_helper_funcs.py'), semantics_generated, attribs_def, gen_tcg_h, '@OUTPUT@'],
)
hexagon_ss.add(helper_funcs_generated)

printinsn_generated = custom_target(
    'printinsn_generated.h.inc',
    output: 'printinsn_generated.h.inc',
    depends: [semantics_generated],
    depend_files: [hex_common_py, attribs_def],
    command: [python, files('gen_printinsn.py'), semantics_generated, attribs_def, '@OUTPUT@'],
)
hexagon_ss.add(printinsn_generated)

op_regs_generated = custom_target(
    'op_regs_generated.h.inc',
    output: 'op_regs_generated.h.inc',
    depends: [semantics_generated],
    depend_files: [hex_common_py, attribs_def],
    command: [python, files('gen_op_regs.py'), semantics_generated, attribs_def, '@OUTPUT@'],
)
hexagon_ss.add(op_regs_generated)

op_attribs_generated = custom_target(
    'op_attribs_generated.h.inc',
    output: 'op_attribs_generated.h.inc',
    depends: [semantics_generated],
    depend_files: [hex_common_py, attribs_def],
    command: [python, files('gen_op_attribs.py'), semantics_generated, attribs_def, '@OUTPUT@'],
)
hexagon_ss.add(op_attribs_generated)

opcodes_def_generated = custom_target(
    'opcodes_def_generated.h.inc',
    output: 'opcodes_def_generated.h.inc',
    depends: [semantics_generated],
    depend_files: [hex_common_py, attribs_def],
    command: [python, files('gen_opcodes_def.py'), semantics_generated, attribs_def, '@OUTPUT@'],
)
hexagon_ss.add(opcodes_def_generated)

#
# Step 3
# We use a C program to create iset.py which is imported into dectree.py
# to create the decode tree
#
gen_dectree_import = executable(
    'gen_dectree_import',
    'gen_dectree_import.c', opcodes_def_generated, op_regs_generated,
    native: true, build_by_default: false)

iset_py = custom_target(
    'iset.py',
    output: 'iset.py',
    command: [gen_dectree_import, '@OUTPUT@'],
)
hexagon_ss.add(iset_py)

#
# Step 4
# We use the dectree.py script to generate the decode tree header file
#
dectree_generated = custom_target(
    'dectree_generated.h.inc',
    output: 'dectree_generated.h.inc',
    depends: [iset_py],
    command: ['env', 'PYTHONPATH=' + meson.current_build_dir(), files('dectree.py'), '@OUTPUT@'],
)
hexagon_ss.add(dectree_generated)

hexagon_ss.add(files(
    'cpu.c',
    'translate.c',
    'op_helper.c',
    'gdbstub.c',
    'genptr.c',
    'reg_fields.c',
    'decode.c',
    'iclass.c',
    'opcodes.c',
    'printinsn.c',
    'arch.c',
    'fma_emu.c',
    'conv_emu.c',
))

target_arch += {'hexagon': hexagon_ss}