94 lines
3.1 KiB
Python
94 lines
3.1 KiB
Python
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#!/usr/bin/env python3
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# Copyright 2023 The Fuchsia Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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import json
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import sys
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def usage():
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print(
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'Usage:\n'
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' regen.py INPUT OUT.in OUT.attrib\n'
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' INPUT json file containing the magma interface definition\n'
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' OUT.in destination path for the magma interface file to generate\n'
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' OUT.attrib destination path for the magma interface file to generate\n'
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' Example: ./regen.py ./magma.json ./magma.in ./magma.attrib\n'
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' Generates magma interface and attrib files based on a provided json definition.')
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# returns a string that will block presubmit
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def dnsstr():
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return (
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'DO '
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'NOT '
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'SUBMIT'
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)
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def format_export(export):
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args = [f'{arg["type"]} {arg["name"]}' for arg in export["arguments"]]
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return f'MAGMA({export["type"]}, {export["name"]}, {", ".join(args)})'
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def if_header():
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return (
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f'# !!!! {dnsstr()} !!!!\n'
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'# This interface file was generated using the magma\n'
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'# definition file. Some methods with nested structs must\n'
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'# be manually serialized/deserialized and so modifications\n'
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'# must be made to those method signatures prior to running\n'
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'# emugen!\n'
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f'# !!!! {dnsstr()} !!!!\n'
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'\n'
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)
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def attrib_header():
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return (
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f'# !!!! {dnsstr()} !!!!\n'
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'# This attrib file was generated using HEURISTICS based on\n'
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'# the magma definition file. It must be manually verified\n'
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'# prior to submission!\n'
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f'# !!!! {dnsstr()} !!!!\n'
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'\n'
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'# For documentation on the .attrib file format, see:\n'
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'# android/android-emugl/host/tools/emugen/README\n'
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'\n'
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'GLOBAL\n'
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'\tbase_opcode 100000\n'
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'\tencoder_headers <stdint.h>\n'
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)
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def format_attribs(export):
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out_args = [arg for arg in export["arguments"] if arg["name"].endswith('_out')]
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if len(out_args) == 0:
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return None
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ret = f'{export["name"]}\n'
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for arg in out_args:
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ret += f'\tdir {arg["name"]} out\n'
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ret += f'\tlen {arg["name"]} sizeof({arg["type"][:-1]})\n'
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return ret
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def main():
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if (len(sys.argv) != 4):
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usage()
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return 2
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try:
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with open(sys.argv[1], 'r') as file:
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with open(sys.argv[2], 'w') as dest_in:
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with open(sys.argv[3], 'w') as dest_attrib:
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magma = json.load(file)['magma-interface']
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lines = [format_export(e) for e in magma['exports']]
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dest_in.write(if_header())
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dest_in.write('\n'.join(lines))
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dest_attrib.write(attrib_header())
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for export in magma['exports']:
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attribs = format_attribs(export)
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if (attribs):
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dest_attrib.write('\n' + attribs)
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except Exception as e:
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print(f'Error accessing files: {e}')
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usage()
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return 1
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if __name__ == '__main__':
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sys.exit(main())
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