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#!/usr/bin/python2
# (C) Copyright IBM Corporation 2004
# All Rights Reserved.
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# on the rights to use, copy, modify, merge, publish, distribute, sub
# license, and/or sell copies of the Software, and to permit persons to whom
# the Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice (including the next
# paragraph) shall be included in all copies or substantial portions of the
# Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
# IBM AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
#
# Authors:
# Ian Romanick <idr@us.ibm.com>
from xml.sax import saxutils
from xml.sax import make_parser
from xml.sax.handler import feature_namespaces
import gl_XML
import license
import sys, getopt
class PrintGenericStubs(gl_XML.FilterGLAPISpecBase):
name = "gl_x86_asm.py (from Mesa)"
def __init__(self):
gl_XML.FilterGLAPISpecBase.__init__(self)
self.license = license.bsd_license_template % ( \
"""Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
(C) Copyright IBM Corporation 2004""", "BRIAN PAUL, IBM")
def get_stack_size(self, f):
size = 0
for p in f:
t = p.p_type
if p.is_array() or t.size != 8:
size += 4
else:
size += 8
return size
def printRealHeader(self):
print '#include "assyntax.h"'
print '#include "glapioffsets.h"'
print ''
print '#ifndef __WIN32__'
print ''
print '#if defined(STDCALL_API)'
print '#define GL_PREFIX(n,n2) GLNAME(CONCAT(gl,n2))'
print '#elif defined(USE_MGL_NAMESPACE)'
print '#define GL_PREFIX(n,n2) GLNAME(CONCAT(mgl,n))'
print '#else'
print '#define GL_PREFIX(n,n2) GLNAME(CONCAT(gl,n))'
print '#endif'
print ''
print '#define GL_OFFSET(x) CODEPTR(REGOFF(4 * x, EAX))'
print ''
print '#if defined(GNU_ASSEMBLER) && !defined(__DJGPP__) && !defined(__MINGW32__)'
print '#define GLOBL_FN(x) GLOBL x ; .type x,@function'
print '#else'
print '#define GLOBL_FN(x) GLOBL x'
print '#endif'
print ''
print '#if defined(PTHREADS)'
print '# define GL_STUB(fn,off,fn_alt)\t\t\t\\'
print 'ALIGNTEXT16;\t\t\t\t\t\t\\'
print 'GLOBL_FN(GL_PREFIX(fn, fn_alt));\t\t\t\\'
print 'GL_PREFIX(fn, fn_alt):\t\t\t\t\t\\'
print '\tMOV_L(CONTENT(GLNAME(_glapi_DispatchTSD)), EAX) ;\t\\'
print '\tTEST_L(EAX, EAX) ;\t\t\t\t\\'
print '\tJE(1f) ;\t\t\t\t\t\\'
print '\tJMP(GL_OFFSET(off)) ;\t\t\t\t\\'
print '1:\tCALL(get_dispatch) ;\t\t\t\t\\'
print '\tJMP(GL_OFFSET(off))'
print '#elif defined(THREADS)'
print '# define GL_STUB(fn,off,fn_alt)\t\t\t\\'
print 'ALIGNTEXT16;\t\t\t\t\t\t\\'
print 'GLOBL_FN(GL_PREFIX(fn, fn_alt));\t\t\t\\'
print 'GL_PREFIX(fn, fn_alt):\t\t\t\t\t\\'
print '\tMOV_L(CONTENT(GLNAME(_glapi_DispatchTSD)), EAX) ;\t\\'
print '\tTEST_L(EAX, EAX) ;\t\t\t\t\\'
print '\tJE(1f) ;\t\t\t\t\t\\'
print '\tJMP(GL_OFFSET(off)) ;\t\t\t\t\\'
print '1:\tCALL(_glapi_get_dispatch) ;\t\t\t\\'
print '\tJMP(GL_OFFSET(off))'
print '#else /* Non-threaded version. */'
print '# define GL_STUB(fn,off,fn_alt)\t\t\t\\'
print 'ALIGNTEXT16;\t\t\t\t\t\t\\'
print 'GLOBL_FN(GL_PREFIX(fn, fn_alt));\t\t\t\\'
print 'GL_PREFIX(fn, fn_alt):\t\t\t\t\t\\'
print '\tMOV_L(CONTENT(GLNAME(_glapi_DispatchTSD)), EAX) ;\t\\'
print '\tJMP(GL_OFFSET(off))'
print '#endif'
print ''
print 'SEG_TEXT'
print ''
print '#ifdef PTHREADS'
print 'EXTERN GLNAME(_glapi_Dispatch)'
print 'EXTERN GLNAME(_gl_DispatchTSD)'
print '#ifdef __PIC__'
print 'EXTERN GLNAME(pthread_getspecific@PLT)'
print '#else'
print 'EXTERN GLNAME(pthread_getspecific)'
print '#endif'
print ''
print 'ALIGNTEXT16'
print 'GLNAME(get_dispatch):'
print '\tSUB_L(CONST(24), ESP)'
print '\tPUSH_L(GLNAME(_gl_DispatchTSD))'
print '#ifdef __PIC__'
print '\tCALL(GLNAME(pthread_getspecific@PLT))'
print '#else'
print '\tCALL(GLNAME(pthread_getspecific))'
print '#endif'
print '\tADD_L(CONST(28), ESP)'
print '\tRET'
print '#elif defined(THREADS)'
print 'EXTERN GLNAME(_glapi_get_dispatch)'
print '#endif'
print ''
print '\t\tALIGNTEXT16 ; GLOBL gl_dispatch_functions_start'
print 'gl_dispatch_functions_start:'
print ''
return
def printRealFooter(self):
print ''
print '#endif /* __WIN32__ */'
return
def printFunction(self, f):
stack = self.get_stack_size(f)
alt = "%s@%u" % (f.name, stack)
print '\tGL_STUB(%s, _gloffset_%s, %s)' % (f.name, f.real_name, alt)
return
def show_usage():
print "Usage: %s [-f input_file_name] [-m output_mode]" % sys.argv[0]
sys.exit(1)
if __name__ == '__main__':
file_name = "gl_API.xml"
mode = "generic"
try:
(args, trail) = getopt.getopt(sys.argv[1:], "m:f:")
except Exception,e:
show_usage()
for (arg,val) in args:
if arg == '-m':
mode = val
elif arg == "-f":
file_name = val
if mode == "generic":
dh = PrintGenericStubs()
else:
print "ERROR: Invalid mode \"%s\" specified." % mode
show_usage()
parser = make_parser()
parser.setFeature(feature_namespaces, 0)
parser.setContentHandler(dh)
f = open(file_name)
dh.printHeader()
parser.parse(f)
dh.printFooter()
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