src/mesa/glapi/glsparcasm.py

   1 #!/usr/bin/env python
   2
   3 # Mesa 3-D graphics library
   4 # Version:  5.1
   5 #
   6 # Copyright (C) 1999-2003  Brian Paul   All Rights Reserved.
   7 #
   8 # Permission is hereby granted, free of charge, to any person obtaining a
   9 # copy of this software and associated documentation files (the "Software"),
  10 # to deal in the Software without restriction, including without limitation
  11 # the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12 # and/or sell copies of the Software, and to permit persons to whom the
  13 # Software is furnished to do so, subject to the following conditions:
  14 #
  15 # The above copyright notice and this permission notice shall be included
  16 # in all copies or substantial portions of the Software.
  17 #
  18 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19 # OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21 # BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  22 # AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  23 # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24
  25
  26 # Generate the src/SPARC/glapi_sparc.S file.
  27 #
  28 # Usage:
  29 #    gloffsets.py >glapi_sparc.S
  30 #
  31 # Dependencies:
  32 #    The apispec file must be in the current directory.
  33
  34
  35 import apiparser;
  36
  37
  38 def PrintHead():
  39         print '/* DO NOT EDIT - This file generated automatically with glsparcasm.py script */'
  40         print '#include "glapioffsets.h"'
  41         print ''
  42         print '/* The _glapi_Dispatch symbol addresses get relocated into the'
  43         print ' * sethi/or instruction sequences below at library init time.'
  44         print ' */'
  45         print ''
  46         print ''
  47         print '.text'
  48         print '.align 32'
  49         print '.globl __glapi_sparc_icache_flush'
  50         print '__glapi_sparc_icache_flush: /* %o0 = insn_addr */'
  51         print '\tflush\t%o0'
  52         print '\tretl'
  53         print '\tnop'
  54         print ''
  55         print '.data'
  56         print '.align 64'
  57         print ''
  58         print '.globl _mesa_sparc_glapi_begin'
  59         print '.type _mesa_sparc_glapi_begin,#function'
  60         print '_mesa_sparc_glapi_begin:'
  61         return
  62 #endif
  63
  64 def PrintTail():
  65         print '\t nop'
  66         print ''
  67         print '.globl _mesa_sparc_glapi_end'
  68         print '.type _mesa_sparc_glapi_end,#function'
  69         print '_mesa_sparc_glapi_end:'
  70         print ''
  71 #endif
  72
  73
  74
  75 records = []
  76
  77 def FindOffset(funcName):
  78         for (name, alias, offset) in records:
  79                 if name == funcName:
  80                         return offset
  81                 #endif
  82         #endfor
  83         return -1
  84 #enddef
  85
  86 def EmitFunction(name, returnType, argTypeList, argNameList, alias, offset):
  87         argList = apiparser.MakeArgList(argTypeList, argNameList)
  88         if alias != '':
  89                 dispatchName = alias
  90         else:
  91                 dispatchName = name
  92         #endif
  93
  94         if offset < 0:
  95                 # try to find offset from alias name
  96                 assert dispatchName != ''
  97                 offset = FindOffset(dispatchName)
  98                 if offset == -1:
  99                         #print 'Cannot dispatch %s' % name
 100                         return
 101                 #endif
 102         #endif
 103
 104         # save this info in case we need to look up an alias later
 105         records.append((name, dispatchName, offset))
 106
 107         # print the assembly code
 108         print ''
 109         print '.globl gl%s' % (name)
 110         print '.type gl%s,#function' % (name)
 111         print 'gl%s:' % (name)
 112         print '#if defined(__sparc_v9__) && !defined(__linux__)'
 113         print '\tsethi\t%hi(0x00000000), %g2'
 114         print '\tsethi\t%hi(0x00000000), %g1'
 115         print '\tor\t%g2, %lo(0x00000000), %g2'
 116         print '\tor\t%g1, %lo(0x00000000), %g1'
 117         print '\tsllx\t%g2, 32, %g2'
 118         print '\tldx\t[%g1 + %g2], %g1'
 119         print "\tsethi\t%%hi(8 * _gloffset_%s), %%g2" % (dispatchName)
 120         print "\tor\t%%g2, %%lo(8 * _gloffset_%s), %%g2" % (dispatchName)
 121         print '\tldx\t[%g1 + %g2], %g3'
 122         print '#else'
 123         print '\tsethi\t%hi(0x00000000), %g1'
 124         print '\tld\t[%g1 + %lo(0x00000000)], %g1'
 125         print "\tld\t[%%g1 + (4 * _gloffset_%s)], %%g3" % (dispatchName)
 126         print '#endif'
 127         print '\tjmpl\t%g3, %g0'
 128         print '\tnop'
 129 #enddef
 130
 131
 132 PrintHead()
 133 apiparser.ProcessSpecFile("APIspec", EmitFunction)
 134 PrintTail()