src/mesa/glapi/glsparcasm.py

   1 #!/usr/bin/env python
   2
   3 # $Id: glsparcasm.py,v 1.1 2001/06/05 04:30:03 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 '.text'
  55         print '.align 64'
  56         print ''
  57         return
  58 #endif
  59
  60 def PrintTail():
  61         print '\t nop'
  62         print ''
  63 #endif
  64
  65
  66 def GenerateDispatchCode(name, offset):
  67         print ''
  68         print "GLOBL_FN(GL_PREFIX(%s))" % (name)
  69         print "GL_PREFIX(%s):" % (name)
  70         print '#ifdef __sparc_v9__'
  71         print '\tsethi\t%hi(0x00000000), %g2'
  72         print '\tsethi\t%hi(0x00000000), %g1'
  73         print '\tor\t%g2, %lo(0x00000000), %g2'
  74         print '\tor\t%g1, %lo(0x00000000), %g1'
  75         print '\tsllx\t%g2, 32, %g2'
  76         print '\tor\t%g1, %g2, %g1'
  77         print "\tsethi\t%%hi(8 * _gloffset_%s), %%g2" % (offset)
  78         print "\tor\t%%g2, %%lo(8 * _gloffset_%s), %%g2" % (offset)
  79         print '\tldx\t[%g1 + %g2], %g3'
  80         print '#else'
  81         print '\tsethi\t%hi(0x00000000), %g1'
  82         print '\tor\t%g1, %lo(0x00000000), %g1'
  83         print "\tld\t[%%g1 + (4 * _gloffset_%s)], %%g3" % (offset)
  84         print '#endif'
  85         print '\tjmpl\t%g3, %g0'
  86 #enddef
  87
  88
  89 def FindAlias(list, funcName):
  90         for i in range(0, len(list)):
  91                 entry = list[i]
  92                 if entry[0] == funcName:
  93                         return entry[1]
  94                 #endif
  95         #endfor
  96         return ''
  97 #enddef
  98
  99
 100
 101 def PrintDefines():
 102         functionPattern = re.compile('^[a-zA-Z0-9]+\(')
 103         functionNamePattern = re.compile('^[a-zA-Z0-9]+')
 104
 105         funcName = ''
 106         functions = [ ]
 107
 108         f = open('gl.spec')
 109         for line in f.readlines():
 110
 111                 m = functionPattern.match(line)
 112                 if m:
 113                         # extract funcName
 114                         n = functionNamePattern.findall(line)
 115                         funcName = n[0]
 116
 117                 m = string.split(line)
 118                 if len(m) > 1:
 119                         if m[0] == 'param':
 120                                 paramName = m[1]
 121                         if m[0] == 'offset':
 122                                 if m[1] == '?':
 123                                         #print 'WARNING skipping', funcName
 124                                         noop = 0
 125                                 else:
 126                                         entry = [ funcName, funcName ]
 127                                         functions.append(entry)
 128                                 #endif
 129                         elif m[0] == 'alias':
 130                                 aliasedName = FindAlias(functions, m[1])
 131                                 if aliasedName:
 132                                         entry = [ funcName, aliasedName ]
 133                                         functions.append(entry)
 134                                 else:
 135                                         print 'WARNING: alias to unknown function:', aliasedName
 136                                 #endif
 137                         #endif
 138                 #endif
 139         #endfor
 140
 141         # Now generate the assembly dispatch code
 142         for i in range(0, len(functions)):
 143                 entry = functions[i]
 144                 GenerateDispatchCode( entry[0], entry[1] )
 145
 146 #enddef
 147
 148
 149
 150 PrintHead()
 151 PrintDefines()
 152 PrintTail()