149 lines
4.5 KiB
Python
149 lines
4.5 KiB
Python
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# Copyright (C) 2009 Chia-I Wu <olv@0xlab.org>
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# All Rights Reserved.
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#
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# This is based on extension_helper.py by Ian Romanick.
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the "Software"),
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# to deal in the Software without restriction, including without limitation
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# on the rights to use, copy, modify, merge, publish, distribute, sub
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# license, and/or sell copies of the Software, and to permit persons to whom
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# the Software is furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice (including the next
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# paragraph) shall be included in all copies or substantial portions of the
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# Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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# IBM AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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# IN THE SOFTWARE.
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import argparse
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import license
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import gl_XML
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def get_function_spec(func):
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sig = ""
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# derive parameter signature
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for p in func.parameterIterator():
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if p.is_padding:
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continue
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# FIXME: This is a *really* ugly hack. :(
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tn = p.type_expr.get_base_type_node()
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if p.is_pointer():
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sig += 'p'
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elif tn.integer:
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sig += 'i'
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elif tn.size == 4:
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sig += 'f'
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else:
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sig += 'd'
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spec = [sig]
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for ent in func.entry_points:
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spec.append("gl" + ent)
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# spec is terminated by an empty string
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spec.append('')
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return spec
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class PrintGlRemap(gl_XML.gl_print_base):
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def __init__(self):
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gl_XML.gl_print_base.__init__(self)
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self.name = "remap_helper.py (from Mesa)"
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self.license = license.bsd_license_template % ("Copyright (C) 2009 Chia-I Wu <olv@0xlab.org>", "Chia-I Wu")
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return
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def printRealHeader(self):
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print('#include "main/dispatch.h"')
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print('#include "main/remap.h"')
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print('')
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return
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def printBody(self, api):
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pool_indices = {}
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print('/* this is internal to remap.c */')
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print('#ifndef need_MESA_remap_table')
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print('#error Only remap.c should include this file!')
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print('#endif /* need_MESA_remap_table */')
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print('')
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print('')
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print('static const char _mesa_function_pool[] =')
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# output string pool
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index = 0;
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for f in api.functionIterateAll():
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pool_indices[f] = index
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spec = get_function_spec(f)
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# a function has either assigned offset, fixed offset,
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# or no offset
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if f.assign_offset:
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comments = "will be remapped"
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elif f.offset > 0:
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comments = "offset %d" % f.offset
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else:
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comments = "dynamic"
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print(' /* _mesa_function_pool[%d]: %s (%s) */' \
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% (index, f.name, comments))
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for line in spec:
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print(' "%s\\0"' % line)
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index += len(line) + 1
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print(' ;')
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print('')
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print('/* these functions need to be remapped */')
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print('static const struct gl_function_pool_remap MESA_remap_table_functions[] = {')
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# output all functions that need to be remapped
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# iterate by offsets so that they are sorted by remap indices
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for f in api.functionIterateByOffset():
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if not f.assign_offset:
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continue
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print(' { %5d, %s_remap_index },' \
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% (pool_indices[f], f.name))
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print(' { -1, -1 }')
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print('};')
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print('')
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return
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def _parser():
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"""Parse input options and return a namsepace."""
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parser = argparse.ArgumentParser()
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parser.add_argument('-f', '--filename',
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default="gl_API.xml",
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metavar="input_file_name",
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dest='file_name',
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help="An xml description file.")
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return parser.parse_args()
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def main():
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"""Main function."""
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args = _parser()
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api = gl_XML.parse_GL_API(args.file_name)
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printer = PrintGlRemap()
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printer.Print(api)
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if __name__ == '__main__':
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main()
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