src/mesa/glapi/glsparcasm.py

   1 #!/usr/bin/env python
   2
   3 # $Id: glsparcasm.py,v 1.2 2001/06/05 23:54:00 davem69 Exp $
   4
   5 # Mesa 3-D graphics library
   6 # Version:  3.5
   7 #
   8 # Copyright (C) 1999-2000  Brian Paul   All Rights Reserved.
   9 #
  10 # Permission is hereby granted, free of charge, to any person obtaining a
  11 # copy of this software and associated documentation files (the "Software"),
  12 # to deal in the Software without restriction, including without limitation
  13 # the rights to use, copy, modify, merge, publish, distribute, sublicense,
  14 # and/or sell copies of the Software, and to permit persons to whom the
  15 # Software is furnished to do so, subject to the following conditions:
  16 #
  17 # The above copyright notice and this permission notice shall be included
  18 # in all copies or substantial portions of the Software.
  19 #
  20 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  21 # OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  23 # BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  24 # AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  25 # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26
  27
  28 # Generate the glapi_sparc.S assembly language file.
  29 #
  30 # Usage:
  31 #    glsparcasm.py >glapi_sparc.S
  32 #
  33 # Dependencies:
  34 #    The gl.spec file from the SI must be in the current directory.
  35 #
  36 # Brian Paul      11 May 2000
  37 # David S. Miller  4 Jun 2001
  38
  39 import string
  40 import re
  41
  42
  43 def PrintHead():
  44         print '/* DO NOT EDIT - This file generated automatically with glsparcasm.py script */'
  45         print '#include "glapioffsets.h"'
  46         print ''
  47         print '#define GL_PREFIX(n) gl##n'
  48         print '#define GLOBL_FN(x) .globl x ; .type x,@function'
  49         print ''
  50         print '/* The _glapi_Dispatch symbol addresses get relocated into the'
  51         print ' * sethi/or instruction sequences below at library init time.'
  52         print ' */'
  53         print ''
  54         print '.data'
  55         print '.align 64'
  56         print ''
  57         print '.globl _mesa_sparc_glapi_begin'
  58         print '_mesa_sparc_glapi_begin:'
  59         print ''
  60         return
  61 #endif
  62
  63 def PrintTail():
  64         print '\t nop'
  65         print ''
  66         print '.globl _mesa_sparc_glapi_end'
  67         print '_mesa_sparc_glapi_end:'
  68         print ''
  69 #endif
  70
  71
  72 def GenerateDispatchCode(name, offset):
  73         print ''
  74         print "GLOBL_FN(GL_PREFIX(%s))" % (name)
  75         print "GL_PREFIX(%s):" % (name)
  76         print '#ifdef __sparc_v9__'
  77         print '\tsethi\t%hi(0x00000000), %g2'
  78         print '\tsethi\t%hi(0x00000000), %g1'
  79         print '\tor\t%g2, %lo(0x00000000), %g2'
  80         print '\tor\t%g1, %lo(0x00000000), %g1'
  81         print '\tsllx\t%g2, 32, %g2'
  82         print '\tldx\t[%g1 + %g2], %g1'
  83         print "\tsethi\t%%hi(8 * _gloffset_%s), %%g2" % (offset)
  84         print "\tor\t%%g2, %%lo(8 * _gloffset_%s), %%g2" % (offset)
  85         print '\tldx\t[%g1 + %g2], %g3'
  86         print '#else'
  87         print '\tsethi\t%hi(0x00000000), %g1'
  88         print '\tld\t[%g1 + %lo(0x00000000)], %g1'
  89         print "\tld\t[%%g1 + (4 * _gloffset_%s)], %%g3" % (offset)
  90         print '#endif'
  91         print '\tjmpl\t%g3, %g0'
  92 #enddef
  93
  94
  95 def FindAlias(list, funcName):
  96         for i in range(0, len(list)):
  97                 entry = list[i]
  98                 if entry[0] == funcName:
  99                         return entry[1]
 100                 #endif
 101         #endfor
 102         return ''
 103 #enddef
 104
 105
 106
 107 def PrintDefines():
 108         functionPattern = re.compile('^[a-zA-Z0-9]+\(')
 109         functionNamePattern = re.compile('^[a-zA-Z0-9]+')
 110
 111         funcName = ''
 112         functions = [ ]
 113
 114         f = open('gl.spec')
 115         for line in f.readlines():
 116
 117                 m = functionPattern.match(line)
 118                 if m:
 119                         # extract funcName
 120                         n = functionNamePattern.findall(line)
 121                         funcName = n[0]
 122
 123                 m = string.split(line)
 124                 if len(m) > 1:
 125                         if m[0] == 'param':
 126                                 paramName = m[1]
 127                         if m[0] == 'offset':
 128                                 if m[1] == '?':
 129                                         #print 'WARNING skipping', funcName
 130                                         noop = 0
 131                                 else:
 132                                         entry = [ funcName, funcName ]
 133                                         functions.append(entry)
 134                                 #endif
 135                         elif m[0] == 'alias':
 136                                 aliasedName = FindAlias(functions, m[1])
 137                                 if aliasedName:
 138                                         entry = [ funcName, aliasedName ]
 139                                         functions.append(entry)
 140                                 else:
 141                                         print 'WARNING: alias to unknown function:', aliasedName
 142                                 #endif
 143                         #endif
 144                 #endif
 145         #endfor
 146
 147         # Now generate the assembly dispatch code
 148         for i in range(0, len(functions)):
 149                 entry = functions[i]
 150                 GenerateDispatchCode( entry[0], entry[1] )
 151
 152 #enddef
 153
 154
 155
 156 PrintHead()
 157 PrintDefines()
 158 PrintTail()