src/mesa/glapi/gl_x86_asm.py

   1 #!/usr/bin/python2
   2
   3 # (C) Copyright IBM Corporation 2004, 2005
   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, 2005""", "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 '#  define HIDDEN(x) .hidden x'
  68                 print '#else'
  69                 print '#  define HIDDEN(x)'
  70                 print '#endif'
  71                 print ''
  72                 print '#ifndef __WIN32__'
  73                 print ''
  74                 print '#if defined(STDCALL_API)'
  75                 print '# if defined(USE_MGL_NAMESPACE)'
  76                 print '#  define GL_PREFIX(n,n2) GLNAME(CONCAT(mgl,n2))'
  77                 print '# else'
  78                 print '#  define GL_PREFIX(n,n2) GLNAME(CONCAT(gl,n2))'
  79                 print '# endif'
  80                 print '#else'
  81                 print '# if defined(USE_MGL_NAMESPACE)'
  82                 print '#  define GL_PREFIX(n,n2) GLNAME(CONCAT(mgl,n))'
  83                 print '# else'
  84                 print '#  define GL_PREFIX(n,n2) GLNAME(CONCAT(gl,n))'
  85                 print '# endif'
  86                 print '#endif'
  87                 print ''
  88                 print '#define GL_OFFSET(x) CODEPTR(REGOFF(4 * x, EAX))'
  89                 print ''
  90                 print '#if defined(GNU_ASSEMBLER) && !defined(__DJGPP__) && !defined(__MINGW32__)'
  91                 print '#define GLOBL_FN(x) GLOBL x ; .type x, function'
  92                 print '#else'
  93                 print '#define GLOBL_FN(x) GLOBL x'
  94                 print '#endif'
  95                 print ''
  96                 print '#if defined(PTHREADS) || defined(XTHREADS) || defined(SOLARIS_THREADS) || defined(WIN32_THREADS) || defined(BEOS_THREADS)'
  97                 print '#  define THREADS'
  98                 print '#endif'
  99                 print ''
 100                 print '#ifdef GLX_USE_TLS'
 101                 print ''
 102                 print '#  define GL_STUB(fn,off,fn_alt)\t\t\t\\'
 103                 print 'ALIGNTEXT16;\t\t\t\t\t\t\\'
 104                 print 'GLOBL_FN(GL_PREFIX(fn, fn_alt));\t\t\t\\'
 105                 print 'GL_PREFIX(fn, fn_alt):\t\t\t\t\t\\'
 106                 print '\tCALL(_x86_get_dispatch) ;\t\t\t\\'
 107                 print '\tNOP ;\t\t\t\t\t\t\\'
 108                 print '\tJMP(GL_OFFSET(off))'
 109                 print ''
 110                 print '#elif defined(PTHREADS)'
 111                 print '#  define GL_STUB(fn,off,fn_alt)\t\t\t\\'
 112                 print 'ALIGNTEXT16;\t\t\t\t\t\t\\'
 113                 print 'GLOBL_FN(GL_PREFIX(fn, fn_alt));\t\t\t\\'
 114                 print 'GL_PREFIX(fn, fn_alt):\t\t\t\t\t\\'
 115                 print '\tMOV_L(CONTENT(GLNAME(_glapi_DispatchTSD)), EAX) ;\t\\'
 116                 print '\tTEST_L(EAX, EAX) ;\t\t\t\t\\'
 117                 print '\tJE(1f) ;\t\t\t\t\t\\'
 118                 print '\tJMP(GL_OFFSET(off)) ;\t\t\t\t\\'
 119                 print '1:\tCALL(_x86_get_dispatch) ;\t\t\t\\'
 120                 print '\tJMP(GL_OFFSET(off))'
 121                 print '#elif defined(THREADS)'
 122                 print '#  define GL_STUB(fn,off,fn_alt)\t\t\t\\'
 123                 print 'ALIGNTEXT16;\t\t\t\t\t\t\\'
 124                 print 'GLOBL_FN(GL_PREFIX(fn, fn_alt));\t\t\t\\'
 125                 print 'GL_PREFIX(fn, fn_alt):\t\t\t\t\t\\'
 126                 print '\tMOV_L(CONTENT(GLNAME(_glapi_DispatchTSD)), EAX) ;\t\\'
 127                 print '\tTEST_L(EAX, EAX) ;\t\t\t\t\\'
 128                 print '\tJE(1f) ;\t\t\t\t\t\\'
 129                 print '\tJMP(GL_OFFSET(off)) ;\t\t\t\t\\'
 130                 print '1:\tCALL(_glapi_get_dispatch) ;\t\t\t\\'
 131                 print '\tJMP(GL_OFFSET(off))'
 132                 print '#else /* Non-threaded version. */'
 133                 print '#  define GL_STUB(fn,off,fn_alt)\t\t\t\\'
 134                 print 'ALIGNTEXT16;\t\t\t\t\t\t\\'
 135                 print 'GLOBL_FN(GL_PREFIX(fn, fn_alt));\t\t\t\\'
 136                 print 'GL_PREFIX(fn, fn_alt):\t\t\t\t\t\\'
 137                 print '\tMOV_L(CONTENT(GLNAME(_glapi_Dispatch)), EAX) ;\t\\'
 138                 print '\tJMP(GL_OFFSET(off))'
 139                 print '#endif'
 140                 print ''
 141                 print '#ifdef HAVE_ALIAS'
 142                 print '#  define GL_STUB_ALIAS(fn,off,fn_alt,alias,alias_alt)\t\\'
 143                 print '\t.globl\tGL_PREFIX(fn, fn_alt) ;\t\t\t\\'
 144                 print '\t.set\tGL_PREFIX(fn, fn_alt), GL_PREFIX(alias, alias_alt)'
 145                 print '#else'
 146                 print '#  define GL_STUB_ALIAS(fn,off,fn_alt,alias,alias_alt)\t\\'
 147                 print '    GL_STUB(fn, off, fn_alt)'
 148                 print '#endif'
 149                 print ''
 150                 print 'SEG_TEXT'
 151                 print ''
 152                 print '#ifdef GLX_USE_TLS'
 153                 print ''
 154                 print '\tGLOBL\tGLNAME(_x86_get_dispatch)'
 155                 print '\tHIDDEN(GLNAME(_x86_get_dispatch))'
 156                 print 'ALIGNTEXT16'
 157                 print 'GLNAME(_x86_get_dispatch):'
 158                 print '\tmovl\t%gs:_glapi_tls_Dispatch@NTPOFF, %eax'
 159                 print '\tret'
 160                 print ''
 161                 print '#elif defined(PTHREADS)'
 162                 print 'EXTERN GLNAME(_glapi_Dispatch)'
 163                 print 'EXTERN GLNAME(_gl_DispatchTSD)'
 164                 print 'EXTERN GLNAME(pthread_getspecific)'
 165                 print ''
 166                 print 'ALIGNTEXT16'
 167                 print 'GLNAME(_x86_get_dispatch):'
 168                 print '\tSUB_L(CONST(24), ESP)'
 169                 print '\tPUSH_L(GLNAME(_gl_DispatchTSD))'
 170                 print '\tCALL(GLNAME(pthread_getspecific))'
 171                 print '\tADD_L(CONST(28), ESP)'
 172                 print '\tRET'
 173                 print '#elif defined(THREADS)'
 174                 print 'EXTERN GLNAME(_glapi_get_dispatch)'
 175                 print '#endif'
 176                 print ''
 177
 178                 print '#if defined( GLX_USE_TLS )'
 179                 print '\t\t.section\twtext, "awx", @progbits'
 180                 print '#endif /* defined( GLX_USE_TLS ) */'
 181
 182                 print ''
 183                 print '\t\tALIGNTEXT16'
 184                 print '\t\tGLOBL GLNAME(gl_dispatch_functions_start)'
 185                 print '\t\tHIDDEN(GLNAME(gl_dispatch_functions_start))'
 186                 print 'GLNAME(gl_dispatch_functions_start):'
 187                 print ''
 188                 return
 189
 190         def printRealFooter(self):
 191                 print ''
 192                 print '\t\tGLOBL\tGLNAME(gl_dispatch_functions_end)'
 193                 print '\t\tHIDDEN(GLNAME(gl_dispatch_functions_end))'
 194                 print '\t\tALIGNTEXT16'
 195                 print 'GLNAME(gl_dispatch_functions_end):'
 196                 print ''
 197                 print '#if defined(GLX_USE_TLS) && defined(__linux__)'
 198                 print ' .section ".note.ABI-tag", "a"'
 199                 print ' .p2align 2'
 200                 print ' .long   1f - 0f   /* name length */'
 201                 print ' .long   3f - 2f   /* data length */'
 202                 print ' .long   1         /* note length */'
 203                 print '0:       .asciz "GNU"      /* vendor name */'
 204                 print '1:       .p2align 2'
 205                 print '2:       .long   0         /* note data: the ABI tag */'
 206                 print ' .long   2,4,20    /* Minimum kernel version w/TLS */'
 207                 print '3:       .p2align 2        /* pad out section */'
 208                 print '#endif /* GLX_USE_TLS */'
 209                 print ''
 210                 print '#endif  /* __WIN32__ */'
 211                 return
 212
 213         def printFunction(self, f):
 214                 stack = self.get_stack_size(f)
 215
 216                 alt = "%s@%u" % (f.name, stack)
 217                 if f.fn_alias == None:
 218                         print '\tGL_STUB(%s, _gloffset_%s, %s)' % (f.name, f.real_name, alt)
 219                 else:
 220                         alias_alt = "%s@%u" % (f.real_name, stack)
 221                         print '\tGL_STUB_ALIAS(%s, _gloffset_%s, %s, %s, %s)' % \
 222                             (f.name, f.real_name, alt, f.real_name, alias_alt)
 223                 return
 224
 225 def show_usage():
 226         print "Usage: %s [-f input_file_name] [-m output_mode]" % sys.argv[0]
 227         sys.exit(1)
 228
 229 if __name__ == '__main__':
 230         file_name = "gl_API.xml"
 231         mode = "generic"
 232
 233         try:
 234                 (args, trail) = getopt.getopt(sys.argv[1:], "m:f:")
 235         except Exception,e:
 236                 show_usage()
 237
 238         for (arg,val) in args:
 239                 if arg == '-m':
 240                         mode = val
 241                 elif arg == "-f":
 242                         file_name = val
 243
 244         if mode == "generic":
 245                 dh = PrintGenericStubs()
 246         else:
 247                 print "ERROR: Invalid mode \"%s\" specified." % mode
 248                 show_usage()
 249
 250         parser = make_parser()
 251         parser.setFeature(feature_namespaces, 0)
 252         parser.setContentHandler(dh)
 253
 254         f = open(file_name)
 255
 256         dh.printHeader()
 257         parser.parse(f)
 258         dh.printFooter()