--- /dev/null
+#!/usr/bin/env python
+
+# Copyright (C) 2009 Chia-I Wu <olv@0xlab.org>
+# All Rights Reserved.
+#
+# This is based on extension_helper.py by Ian Romanick.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# on the rights to use, copy, modify, merge, publish, distribute, sub
+# license, and/or sell copies of the Software, and to permit persons to whom
+# the Software is furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice (including the next
+# paragraph) shall be included in all copies or substantial portions of the
+# Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+# IBM AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+# IN THE SOFTWARE.
+
+import gl_XML
+import license
+import sys, getopt, string
+
+def get_function_spec(func):
+ sig = ""
+ # derive parameter signature
+ for p in func.parameterIterator():
+ if p.is_padding:
+ continue
+ # FIXME: This is a *really* ugly hack. :(
+ tn = p.type_expr.get_base_type_node()
+ if p.is_pointer():
+ sig += 'p'
+ elif tn.integer:
+ sig += 'i'
+ elif tn.size == 4:
+ sig += 'f'
+ else:
+ sig += 'd'
+
+ spec = [sig]
+ for ent in func.entry_points:
+ spec.append("gl" + ent)
+
+ # spec is terminated by an empty string
+ spec.append('')
+
+ return spec
+
+class PrintGlRemap(gl_XML.gl_print_base):
+ def __init__(self):
+ gl_XML.gl_print_base.__init__(self)
+
+ self.name = "remap_helper.py (from Mesa)"
+ self.license = license.bsd_license_template % ("Copyright (C) 2009 Chia-I Wu <olv@0xlab.org>", "Chia-I Wu")
+ return
+
+
+ def printRealHeader(self):
+ print '#include "main/dispatch.h"'
+ print '#include "main/remap.h"'
+ print ''
+ return
+
+
+ def printBody(self, api):
+ pool_indices = {}
+
+ print '/* this is internal to remap.c */'
+ print '#ifdef need_MESA_remap_table'
+ print ''
+ print 'static const char _mesa_function_pool[] ='
+
+ # output string pool
+ index = 0;
+ for f in api.functionIterateAll():
+ pool_indices[f] = index
+
+ spec = get_function_spec(f)
+
+ # a function has either assigned offset, fixed offset,
+ # or no offset
+ if f.assign_offset:
+ comments = "will be remapped"
+ elif f.offset > 0:
+ comments = "offset %d" % f.offset
+ else:
+ comments = "dynamic"
+
+ print ' /* _mesa_function_pool[%d]: %s (%s) */' \
+ % (index, f.name, comments)
+ for line in spec:
+ print ' "%s\\0"' % line
+ index += len(line) + 1
+ print ' ;'
+ print ''
+
+ print '/* these functions need to be remapped */'
+ print 'static const struct gl_function_pool_remap MESA_remap_table_functions[] = {'
+ # output all functions that need to be remapped
+ # iterate by offsets so that they are sorted by remap indices
+ for f in api.functionIterateByOffset():
+ if not f.assign_offset:
+ continue
+ print ' { %5d, %s_remap_index },' \
+ % (pool_indices[f], f.name)
+ print ' { -1, -1 }'
+ print '};'
+ print ''
+
+ # collect functions by versions/extensions
+ extension_functions = {}
+ abi_extensions = []
+ for f in api.functionIterateAll():
+ for n in f.entry_points:
+ category, num = api.get_category_for_name(n)
+ # consider only GL_VERSION_X_Y or extensions
+ c = gl_XML.real_category_name(category)
+ if c.startswith("GL_"):
+ if not extension_functions.has_key(c):
+ extension_functions[c] = []
+ extension_functions[c].append(f)
+ # remember the ext names of the ABI
+ if (f.is_abi() and n == f.name and
+ c not in abi_extensions):
+ abi_extensions.append(c)
+ # ignore the ABI itself
+ for ext in abi_extensions:
+ extension_functions.pop(ext)
+
+ extensions = extension_functions.keys()
+ extensions.sort()
+
+ # output ABI functions that have alternative names (with ext suffix)
+ print '/* these functions are in the ABI, but have alternative names */'
+ print 'static const struct gl_function_remap MESA_alt_functions[] = {'
+ for ext in extensions:
+ funcs = []
+ for f in extension_functions[ext]:
+ # test if the function is in the ABI and has alt names
+ if f.is_abi() and len(f.entry_points) > 1:
+ funcs.append(f)
+ if not funcs:
+ continue
+ print ' /* from %s */' % ext
+ for f in funcs:
+ print ' { %5d, _gloffset_%s },' \
+ % (pool_indices[f], f.name)
+ print ' { -1, -1 }'
+ print '};'
+ print ''
+
+ print '#endif /* need_MESA_remap_table */'
+ print ''
+
+ # output remap helpers for DRI drivers
+
+ for ext in extensions:
+ funcs = []
+ remapped = []
+ for f in extension_functions[ext]:
+ if f.assign_offset:
+ # these are handled above
+ remapped.append(f)
+ else:
+ # these functions are either in the
+ # abi, or have offset -1
+ funcs.append(f)
+
+ print '#if defined(need_%s)' % (ext)
+ if remapped:
+ print '/* functions defined in MESA_remap_table_functions are excluded */'
+
+ # output extension functions that need to be mapped
+ print 'static const struct gl_function_remap %s_functions[] = {' % (ext)
+ for f in funcs:
+ if f.offset >= 0:
+ print ' { %5d, _gloffset_%s },' \
+ % (pool_indices[f], f.name)
+ else:
+ print ' { %5d, -1 }, /* %s */' % \
+ (pool_indices[f], f.name)
+ print ' { -1, -1 }'
+ print '};'
+
+ print '#endif'
+ print ''
+
+ return
+
+
+def show_usage():
+ print "Usage: %s [-f input_file_name]" % sys.argv[0]
+ sys.exit(1)
+
+if __name__ == '__main__':
+ file_name = "gl_API.xml"
+
+ try:
+ (args, trail) = getopt.getopt(sys.argv[1:], "f:")
+ except Exception,e:
+ show_usage()
+
+ for (arg,val) in args:
+ if arg == "-f":
+ file_name = val
+
+ api = gl_XML.parse_GL_API( file_name )
+
+ printer = PrintGlRemap()
+ printer.Print( api )
projects / mesa.git / blobdiff