src/mesa/glapi/glsparcasm.py

   1 #!/usr/bin/env python
   2
   3 # $Id: glsparcasm.py,v 1.7 2002/01/03 16:33:59 brianp Exp $
   4
   5 # Mesa 3-D graphics library
   6 # Version:  4.1
   7 #
   8 # Copyright (C) 1999-2001  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 src/SPARC/glapi_sparc.S file.
  29 #
  30 # Usage:
  31 #    gloffsets.py >glapi_sparc.S
  32 #
  33 # Dependencies:
  34 #    The apispec file must be in the current directory.
  35
  36
  37 import apiparser;
  38
  39
  40 def PrintHead():
  41         print '/* DO NOT EDIT - This file generated automatically with glsparcasm.py script */'
  42         print '#include "glapioffsets.h"'
  43         print ''
  44         print '/* The _glapi_Dispatch symbol addresses get relocated into the'
  45         print ' * sethi/or instruction sequences below at library init time.'
  46         print ' */'
  47         print ''
  48         print ''
  49         print '.text'
  50         print '.align 32'
  51         print '.globl __glapi_sparc_icache_flush'
  52         print '__glapi_sparc_icache_flush: /* %o0 = insn_addr */'
  53         print '\tflush\t%o0'
  54         print '\tretl'
  55         print '\tnop'
  56         print ''
  57         print '.data'
  58         print '.align 64'
  59         print ''
  60         print '.globl _mesa_sparc_glapi_begin'
  61         print '.type _mesa_sparc_glapi_begin,#function'
  62         print '_mesa_sparc_glapi_begin:'
  63         return
  64 #endif
  65
  66 def PrintTail():
  67         print '\t nop'
  68         print ''
  69         print '.globl _mesa_sparc_glapi_end'
  70         print '.type _mesa_sparc_glapi_end,#function'
  71         print '_mesa_sparc_glapi_end:'
  72         print ''
  73 #endif
  74
  75
  76
  77 records = []
  78
  79 def FindOffset(funcName):
  80         for (name, alias, offset) in records:
  81                 if name == funcName:
  82                         return offset
  83                 #endif
  84         #endfor
  85         return -1
  86 #enddef
  87
  88 def EmitFunction(name, returnType, argTypeList, argNameList, alias, offset):
  89         argList = apiparser.MakeArgList(argTypeList, argNameList)
  90         if alias != '':
  91                 dispatchName = alias
  92         else:
  93                 dispatchName = name
  94         #endif
  95
  96         if offset < 0:
  97                 # try to find offset from alias name
  98                 assert dispatchName != ''
  99                 offset = FindOffset(dispatchName)
 100                 if offset == -1:
 101                         #print 'Cannot dispatch %s' % name
 102                         return
 103                 #endif
 104         #endif
 105
 106         # save this info in case we need to look up an alias later
 107         records.append((name, dispatchName, offset))
 108
 109         # print the assembly code
 110         print ''
 111         print '.globl gl%s' % (name)
 112         print '.type gl%s,#function' % (name)
 113         print 'gl%s:' % (name)
 114         print '#ifdef __sparc_v9__'
 115         print '\tsethi\t%hi(0x00000000), %g2'
 116         print '\tsethi\t%hi(0x00000000), %g1'
 117         print '\tor\t%g2, %lo(0x00000000), %g2'
 118         print '\tor\t%g1, %lo(0x00000000), %g1'
 119         print '\tsllx\t%g2, 32, %g2'
 120         print '\tldx\t[%g1 + %g2], %g1'
 121         print "\tsethi\t%%hi(8 * _gloffset_%s), %%g2" % (dispatchName)
 122         print "\tor\t%%g2, %%lo(8 * _gloffset_%s), %%g2" % (dispatchName)
 123         print '\tldx\t[%g1 + %g2], %g3'
 124         print '#else'
 125         print '\tsethi\t%hi(0x00000000), %g1'
 126         print '\tld\t[%g1 + %lo(0x00000000)], %g1'
 127         print "\tld\t[%%g1 + (4 * _gloffset_%s)], %%g3" % (dispatchName)
 128         print '#endif'
 129         print '\tjmpl\t%g3, %g0'
 130         print '\tnop'
 131 #enddef
 132
 133
 134 PrintHead()
 135 apiparser.ProcessSpecFile("APIspec", EmitFunction)
 136 PrintTail()