src/mesa/glapi/gl_x86_asm.py

   1 #!/usr/bin/python2
   2
   3 # (C) Copyright IBM Corporation 2004
   4 # All Rights Reserved.
   5 #
   6 # Permission is hereby granted, free of charge, to any person obtaining a
   7 # copy of this software and associated documentation files (the "Software"),
   8 # to deal in the Software without restriction, including without limitation
   9 # on the rights to use, copy, modify, merge, publish, distribute, sub
  10 # license, and/or sell copies of the Software, and to permit persons to whom
  11 # the Software is furnished to do so, subject to the following conditions:
  12 #
  13 # The above copyright notice and this permission notice (including the next
  14 # paragraph) shall be included in all copies or substantial portions of the
  15 # Software.
  16 #
  17 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 # FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
  20 # IBM AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  22 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  23 # IN THE SOFTWARE.
  24 #
  25 # Authors:
  26 #    Ian Romanick <idr@us.ibm.com>
  27
  28 from xml.sax import saxutils
  29 from xml.sax import make_parser
  30 from xml.sax.handler import feature_namespaces
  31
  32 import gl_XML
  33 import license
  34 import sys, getopt
  35
  36 class PrintGenericStubs(gl_XML.FilterGLAPISpecBase):
  37         name = "gl_x86_asm.py (from Mesa)"
  38
  39         def __init__(self):
  40                 gl_XML.FilterGLAPISpecBase.__init__(self)
  41                 self.license = license.bsd_license_template % ( \
  42 """Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
  43 (C) Copyright IBM Corporation 2004""", "BRIAN PAUL, IBM")
  44
  45
  46         def get_stack_size(self, f):
  47                 size = 0
  48                 for p in f.parameterIterator():
  49                         t = p.p_type
  50
  51                         if p.is_array() or t.size != 8:
  52                                 size += 4
  53                         else:
  54                                 size += 8
  55
  56                 return size
  57
  58         def printRealHeader(self):
  59                 print '#include "assyntax.h"'
  60                 print '#include "glapioffsets.h"'
  61                 print ''
  62                 print "/* If we build with gcc's -fvisibility=hidden flag, we'll need to change"
  63                 print "* the symbol visibility mode to 'default'."
  64                 print '*/'
  65                 print '#if defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 303'
  66                 print '#pragma GCC visibility push(default)'
  67                 print '#endif'
  68                 print ''
  69                 print '#ifndef __WIN32__'
  70                 print ''
  71                 print '#if defined(STDCALL_API)'
  72                 print '# if defined(USE_MGL_NAMESPACE)'
  73                 print '#  define GL_PREFIX(n,n2) GLNAME(CONCAT(mgl,n2))'
  74                 print '# else'
  75                 print '#  define GL_PREFIX(n,n2) GLNAME(CONCAT(gl,n2))'
  76                 print '# endif'
  77                 print '#else'
  78                 print '# if defined(USE_MGL_NAMESPACE)'
  79                 print '#  define GL_PREFIX(n,n2) GLNAME(CONCAT(mgl,n))'
  80                 print '# else'
  81                 print '#  define GL_PREFIX(n,n2) GLNAME(CONCAT(gl,n))'
  82                 print '# endif'
  83                 print '#endif'
  84                 print ''
  85                 print '#define GL_OFFSET(x) CODEPTR(REGOFF(4 * x, EAX))'
  86                 print ''
  87                 print '#if defined(GNU_ASSEMBLER) && !defined(__DJGPP__) && !defined(__MINGW32__)'
  88                 print '#define GLOBL_FN(x) GLOBL x ; .type x, function'
  89                 print '#else'
  90                 print '#define GLOBL_FN(x) GLOBL x'
  91                 print '#endif'
  92                 print ''
  93                 print '#if defined(PTHREADS) || defined(XTHREADS) || defined(SOLARIS_THREADS) || defined(WIN32_THREADS) || defined(BEOS_THREADS)'
  94                 print '#  define THREADS'
  95                 print '#endif'
  96                 print ''
  97                 print '#if defined(PTHREADS)'
  98                 print '#  define GL_STUB(fn,off,fn_alt)\t\t\t\\'
  99                 print 'ALIGNTEXT16;\t\t\t\t\t\t\\'
 100                 print 'GLOBL_FN(GL_PREFIX(fn, fn_alt));\t\t\t\\'
 101                 print 'GL_PREFIX(fn, fn_alt):\t\t\t\t\t\\'
 102                 print '\tMOV_L(CONTENT(GLNAME(_glapi_DispatchTSD)), EAX) ;\t\\'
 103                 print '\tTEST_L(EAX, EAX) ;\t\t\t\t\\'
 104                 print '\tJE(1f) ;\t\t\t\t\t\\'
 105                 print '\tJMP(GL_OFFSET(off)) ;\t\t\t\t\\'
 106                 print '1:\tCALL(_x86_get_dispatch) ;\t\t\t\\'
 107                 print '\tJMP(GL_OFFSET(off))'
 108                 print '#elif defined(THREADS)'
 109                 print '#  define GL_STUB(fn,off,fn_alt)\t\t\t\\'
 110                 print 'ALIGNTEXT16;\t\t\t\t\t\t\\'
 111                 print 'GLOBL_FN(GL_PREFIX(fn, fn_alt));\t\t\t\\'
 112                 print 'GL_PREFIX(fn, fn_alt):\t\t\t\t\t\\'
 113                 print '\tMOV_L(CONTENT(GLNAME(_glapi_DispatchTSD)), EAX) ;\t\\'
 114                 print '\tTEST_L(EAX, EAX) ;\t\t\t\t\\'
 115                 print '\tJE(1f) ;\t\t\t\t\t\\'
 116                 print '\tJMP(GL_OFFSET(off)) ;\t\t\t\t\\'
 117                 print '1:\tCALL(_glapi_get_dispatch) ;\t\t\t\\'
 118                 print '\tJMP(GL_OFFSET(off))'
 119                 print '#else /* Non-threaded version. */'
 120                 print '#  define GL_STUB(fn,off,fn_alt)\t\t\t\\'
 121                 print 'ALIGNTEXT16;\t\t\t\t\t\t\\'
 122                 print 'GLOBL_FN(GL_PREFIX(fn, fn_alt));\t\t\t\\'
 123                 print 'GL_PREFIX(fn, fn_alt):\t\t\t\t\t\\'
 124                 print '\tMOV_L(CONTENT(GLNAME(_glapi_Dispatch)), EAX) ;\t\\'
 125                 print '\tJMP(GL_OFFSET(off))'
 126                 print '#endif'
 127                 print ''
 128                 print 'SEG_TEXT'
 129                 print ''
 130                 print '#ifdef PTHREADS'
 131                 print 'EXTERN GLNAME(_glapi_Dispatch)'
 132                 print 'EXTERN GLNAME(_gl_DispatchTSD)'
 133                 print 'EXTERN GLNAME(pthread_getspecific)'
 134                 print ''
 135                 print 'ALIGNTEXT16'
 136                 print 'GLNAME(_x86_get_dispatch):'
 137                 print '\tSUB_L(CONST(24), ESP)'
 138                 print '\tPUSH_L(GLNAME(_gl_DispatchTSD))'
 139                 print '\tCALL(GLNAME(pthread_getspecific))'
 140                 print '\tADD_L(CONST(28), ESP)'
 141                 print '\tRET'
 142                 print '#elif defined(THREADS)'
 143                 print 'EXTERN GLNAME(_glapi_get_dispatch)'
 144                 print '#endif'
 145                 print ''
 146                 print '\t\tALIGNTEXT16 ; GLOBL GLNAME(gl_dispatch_functions_start)'
 147                 print 'GLNAME(gl_dispatch_functions_start):'
 148                 print ''
 149                 return
 150
 151         def printRealFooter(self):
 152                 print ''
 153                 print '#endif  /* __WIN32__ */'
 154                 return
 155
 156         def printFunction(self, f):
 157                 stack = self.get_stack_size(f)
 158
 159                 alt = "%s@%u" % (f.name, stack)
 160                 print '\tGL_STUB(%s, _gloffset_%s, %s)' % (f.name, f.real_name, alt)
 161                 return
 162
 163 def show_usage():
 164         print "Usage: %s [-f input_file_name] [-m output_mode]" % sys.argv[0]
 165         sys.exit(1)
 166
 167 if __name__ == '__main__':
 168         file_name = "gl_API.xml"
 169         mode = "generic"
 170
 171         try:
 172                 (args, trail) = getopt.getopt(sys.argv[1:], "m:f:")
 173         except Exception,e:
 174                 show_usage()
 175
 176         for (arg,val) in args:
 177                 if arg == '-m':
 178                         mode = val
 179                 elif arg == "-f":
 180                         file_name = val
 181
 182         if mode == "generic":
 183                 dh = PrintGenericStubs()
 184         else:
 185                 print "ERROR: Invalid mode \"%s\" specified." % mode
 186                 show_usage()
 187
 188         parser = make_parser()
 189         parser.setFeature(feature_namespaces, 0)
 190         parser.setContentHandler(dh)
 191
 192         f = open(file_name)
 193
 194         dh.printHeader()
 195         parser.parse(f)
 196         dh.printFooter()