1 #!/usr/bin/env python 2 3 # (C) Copyright IBM Corporation 2004, 2005 4 # All Rights Reserved. 5 # 6 # Permission is hereby granted, free of charge, to any person obtaining a 7 # copy of this software and associated documentation files (the "Software"), 8 # to deal in the Software without restriction, including without limitation 9 # on the rights to use, copy, modify, merge, publish, distribute, sub 10 # license, and/or sell copies of the Software, and to permit persons to whom 11 # the Software is furnished to do so, subject to the following conditions: 12 # 13 # The above copyright notice and this permission notice (including the next 14 # paragraph) shall be included in all copies or substantial portions of the 15 # Software. 16 # 17 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 # FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 20 # IBM AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 22 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 23 # IN THE SOFTWARE. 24 # 25 # Authors: 26 # Ian Romanick <idr (at] us.ibm.com> 27 28 import license 29 import gl_XML, glX_XML 30 import sys, getopt 31 32 class PrintGenericStubs(gl_XML.gl_print_base): 33 34 def __init__(self): 35 gl_XML.gl_print_base.__init__(self) 36 37 self.name = "gl_x86_asm.py (from Mesa)" 38 self.license = license.bsd_license_template % ( \ 39 """Copyright (C) 1999-2001 Brian Paul All Rights Reserved. 40 (C) Copyright IBM Corporation 2004, 2005""", "BRIAN PAUL, IBM") 41 return 42 43 44 def get_stack_size(self, f): 45 size = 0 46 for p in f.parameterIterator(): 47 if p.is_padding: 48 continue 49 50 size += p.get_stack_size() 51 52 return size 53 54 55 def printRealHeader(self): 56 print '#include "x86/assyntax.h"' 57 print '' 58 print '#if defined(STDCALL_API)' 59 print '# if defined(USE_MGL_NAMESPACE)' 60 print '# define GL_PREFIX(n,n2) GLNAME(CONCAT(mgl,n2))' 61 print '# else' 62 print '# define GL_PREFIX(n,n2) GLNAME(CONCAT(gl,n2))' 63 print '# endif' 64 print '#else' 65 print '# if defined(USE_MGL_NAMESPACE)' 66 print '# define GL_PREFIX(n,n2) GLNAME(CONCAT(mgl,n))' 67 print '# define _glapi_Dispatch _mglapi_Dispatch' 68 print '# else' 69 print '# define GL_PREFIX(n,n2) GLNAME(CONCAT(gl,n))' 70 print '# endif' 71 print '#endif' 72 print '' 73 print '#define GL_OFFSET(x) CODEPTR(REGOFF(4 * x, EAX))' 74 print '' 75 print '#if defined(GNU_ASSEMBLER) && !defined(__DJGPP__) && !defined(__MINGW32__) && !defined(__APPLE__)' 76 print '#define GLOBL_FN(x) GLOBL x ; .type x, @function' 77 print '#else' 78 print '#define GLOBL_FN(x) GLOBL x' 79 print '#endif' 80 print '' 81 print '#if defined(HAVE_PTHREAD) || defined(WIN32)' 82 print '# define THREADS' 83 print '#endif' 84 print '' 85 print '#ifdef GLX_USE_TLS' 86 print '' 87 print '#ifdef GLX_X86_READONLY_TEXT' 88 print '# define CTX_INSNS MOV_L(GS:(EAX), EAX)' 89 print '#else' 90 print '# define CTX_INSNS NOP /* Pad for init_glapi_relocs() */' 91 print '#endif' 92 print '' 93 print '# define GL_STUB(fn,off,fn_alt)\t\t\t\\' 94 print 'ALIGNTEXT16;\t\t\t\t\t\t\\' 95 print 'GLOBL_FN(GL_PREFIX(fn, fn_alt));\t\t\t\\' 96 print 'GL_PREFIX(fn, fn_alt):\t\t\t\t\t\\' 97 print '\tCALL(_x86_get_dispatch) ;\t\t\t\\' 98 print '\tCTX_INSNS ; \\' 99 print '\tJMP(GL_OFFSET(off))' 100 print '' 101 print '#elif defined(HAVE_PTHREAD)' 102 print '# define GL_STUB(fn,off,fn_alt)\t\t\t\\' 103 print 'ALIGNTEXT16;\t\t\t\t\t\t\\' 104 print 'GLOBL_FN(GL_PREFIX(fn, fn_alt));\t\t\t\\' 105 print 'GL_PREFIX(fn, fn_alt):\t\t\t\t\t\\' 106 print '\tMOV_L(CONTENT(GLNAME(_glapi_Dispatch)), EAX) ;\t\\' 107 print '\tTEST_L(EAX, EAX) ;\t\t\t\t\\' 108 print '\tJE(1f) ;\t\t\t\t\t\\' 109 print '\tJMP(GL_OFFSET(off)) ;\t\t\t\t\\' 110 print '1:\tCALL(_x86_get_dispatch) ;\t\t\t\\' 111 print '\tJMP(GL_OFFSET(off))' 112 print '#elif defined(THREADS)' 113 print '# define GL_STUB(fn,off,fn_alt)\t\t\t\\' 114 print 'ALIGNTEXT16;\t\t\t\t\t\t\\' 115 print 'GLOBL_FN(GL_PREFIX(fn, fn_alt));\t\t\t\\' 116 print 'GL_PREFIX(fn, fn_alt):\t\t\t\t\t\\' 117 print '\tMOV_L(CONTENT(GLNAME(_glapi_Dispatch)), EAX) ;\t\\' 118 print '\tTEST_L(EAX, EAX) ;\t\t\t\t\\' 119 print '\tJE(1f) ;\t\t\t\t\t\\' 120 print '\tJMP(GL_OFFSET(off)) ;\t\t\t\t\\' 121 print '1:\tCALL(_glapi_get_dispatch) ;\t\t\t\\' 122 print '\tJMP(GL_OFFSET(off))' 123 print '#else /* Non-threaded version. */' 124 print '# define GL_STUB(fn,off,fn_alt)\t\t\t\\' 125 print 'ALIGNTEXT16;\t\t\t\t\t\t\\' 126 print 'GLOBL_FN(GL_PREFIX(fn, fn_alt));\t\t\t\\' 127 print 'GL_PREFIX(fn, fn_alt):\t\t\t\t\t\\' 128 print '\tMOV_L(CONTENT(GLNAME(_glapi_Dispatch)), EAX) ;\t\\' 129 print '\tJMP(GL_OFFSET(off))' 130 print '#endif' 131 print '' 132 print '#ifdef HAVE_ALIAS' 133 print '# define GL_STUB_ALIAS(fn,off,fn_alt,alias,alias_alt)\t\\' 134 print '\t.globl\tGL_PREFIX(fn, fn_alt) ;\t\t\t\\' 135 print '\t.set\tGL_PREFIX(fn, fn_alt), GL_PREFIX(alias, alias_alt)' 136 print '#else' 137 print '# define GL_STUB_ALIAS(fn,off,fn_alt,alias,alias_alt)\t\\' 138 print ' GL_STUB(fn, off, fn_alt)' 139 print '#endif' 140 print '' 141 print 'SEG_TEXT' 142 print '' 143 print '#ifdef GLX_USE_TLS' 144 print '' 145 print '\tGLOBL\tGLNAME(_x86_get_dispatch)' 146 print '\tHIDDEN(GLNAME(_x86_get_dispatch))' 147 print 'ALIGNTEXT16' 148 print 'GLNAME(_x86_get_dispatch):' 149 print '\tcall 1f' 150 print '1:\tpopl %eax' 151 print '\taddl $_GLOBAL_OFFSET_TABLE_+[.-1b], %eax' 152 print '\tmovl _glapi_tls_Dispatch@GOTNTPOFF(%eax), %eax' 153 print '\tret' 154 print '' 155 print '#elif defined(HAVE_PTHREAD)' 156 print 'EXTERN GLNAME(_glapi_Dispatch)' 157 print 'EXTERN GLNAME(_gl_DispatchTSD)' 158 print 'EXTERN GLNAME(pthread_getspecific)' 159 print '' 160 print 'ALIGNTEXT16' 161 print 'GLNAME(_x86_get_dispatch):' 162 print '\tSUB_L(CONST(24), ESP)' 163 print '\tPUSH_L(GLNAME(_gl_DispatchTSD))' 164 print '\tCALL(GLNAME(pthread_getspecific))' 165 print '\tADD_L(CONST(28), ESP)' 166 print '\tRET' 167 print '#elif defined(THREADS)' 168 print 'EXTERN GLNAME(_glapi_get_dispatch)' 169 print '#endif' 170 print '' 171 172 print '#if defined( GLX_USE_TLS ) && !defined( GLX_X86_READONLY_TEXT )' 173 print '\t\t.section\twtext, "awx", @progbits' 174 print '#endif /* defined( GLX_USE_TLS ) */' 175 176 print '' 177 print '\t\tALIGNTEXT16' 178 print '\t\tGLOBL GLNAME(gl_dispatch_functions_start)' 179 print '\t\tHIDDEN(GLNAME(gl_dispatch_functions_start))' 180 print 'GLNAME(gl_dispatch_functions_start):' 181 print '' 182 return 183 184 185 def printRealFooter(self): 186 print '' 187 print '\t\tGLOBL\tGLNAME(gl_dispatch_functions_end)' 188 print '\t\tHIDDEN(GLNAME(gl_dispatch_functions_end))' 189 print '\t\tALIGNTEXT16' 190 print 'GLNAME(gl_dispatch_functions_end):' 191 print '' 192 print '#if defined(GLX_USE_TLS) && defined(__linux__)' 193 print ' .section ".note.ABI-tag", "a"' 194 print ' .p2align 2' 195 print ' .long 1f - 0f /* name length */' 196 print ' .long 3f - 2f /* data length */' 197 print ' .long 1 /* note length */' 198 print '0: .asciz "GNU" /* vendor name */' 199 print '1: .p2align 2' 200 print '2: .long 0 /* note data: the ABI tag */' 201 print ' .long 2,4,20 /* Minimum kernel version w/TLS */' 202 print '3: .p2align 2 /* pad out section */' 203 print '#endif /* GLX_USE_TLS */' 204 print '' 205 print '#if defined (__ELF__) && defined (__linux__)' 206 print ' .section .note.GNU-stack,"",%progbits' 207 print '#endif' 208 return 209 210 211 def printBody(self, api): 212 for f in api.functionIterateByOffset(): 213 name = f.dispatch_name() 214 stack = self.get_stack_size(f) 215 alt = "%s@%u" % (name, stack) 216 217 print '\tGL_STUB(%s, %d, %s)' % (name, f.offset, alt) 218 219 if not f.is_static_entry_point(f.name): 220 print '\tHIDDEN(GL_PREFIX(%s, %s))' % (name, alt) 221 222 223 for f in api.functionIterateByOffset(): 224 name = f.dispatch_name() 225 stack = self.get_stack_size(f) 226 alt = "%s@%u" % (name, stack) 227 228 for n in f.entry_points: 229 if f.is_static_entry_point(n): 230 if n != f.name: 231 alt2 = "%s@%u" % (n, stack) 232 text = '\tGL_STUB_ALIAS(%s, %d, %s, %s, %s)' % (n, f.offset, alt2, name, alt) 233 234 if f.has_different_protocol(n): 235 print '#ifndef GLX_INDIRECT_RENDERING' 236 print text 237 print '#endif' 238 else: 239 print text 240 241 return 242 243 def show_usage(): 244 print "Usage: %s [-f input_file_name] [-m output_mode]" % sys.argv[0] 245 sys.exit(1) 246 247 if __name__ == '__main__': 248 file_name = "gl_API.xml" 249 mode = "generic" 250 251 try: 252 (args, trail) = getopt.getopt(sys.argv[1:], "m:f:") 253 except Exception,e: 254 show_usage() 255 256 for (arg,val) in args: 257 if arg == '-m': 258 mode = val 259 elif arg == "-f": 260 file_name = val 261 262 if mode == "generic": 263 printer = PrintGenericStubs() 264 else: 265 print "ERROR: Invalid mode \"%s\" specified." % mode 266 show_usage() 267 268 api = gl_XML.parse_GL_API(file_name, glX_XML.glx_item_factory()) 269 printer.Print(api) 270
