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authorBrian Paul <brian.paul@tungstengraphics.com>2000-05-11 23:14:57 +0000
committerBrian Paul <brian.paul@tungstengraphics.com>2000-05-11 23:14:57 +0000
commit5a8a6d9ac58a8aada0b6fd51ba3b898fa34db340 (patch)
treeba59c9268813d9c6d5ca1513152b1c55fd6cf7de /src/mesa
parentecfdd8814e23fa1fc4c0635c2ffc45a927e87e1b (diff)
generate X86 dispatch code
Diffstat (limited to 'src/mesa')
-rw-r--r--src/mesa/glapi/glx86asm.py150
1 files changed, 150 insertions, 0 deletions
diff --git a/src/mesa/glapi/glx86asm.py b/src/mesa/glapi/glx86asm.py
new file mode 100644
index 0000000000..2e546c41c2
--- /dev/null
+++ b/src/mesa/glapi/glx86asm.py
@@ -0,0 +1,150 @@
+#!/usr/bin/env python
+
+# $Id: glx86asm.py,v 1.1 2000/05/11 23:14:57 brianp Exp $
+
+# Mesa 3-D graphics library
+# Version: 3.3
+#
+# Copyright (C) 1999-2000 Brian Paul 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
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# 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 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 NONINFRINGEMENT. IN NO EVENT SHALL
+# BRIAN PAUL 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.
+
+
+# Generate the glapi_x86.S assembly language file.
+#
+# Usage:
+# glx86asm.py >glapi_x86.S
+#
+# Dependencies:
+# The gl.spec file from the SI must be in the current directory.
+#
+# Brian Paul 11 May 2000
+
+
+import string
+import re
+
+
+def PrintHead():
+ print '/* DO NOT EDIT - This file generated automatically with glx86asm.py script */'
+ print '#include "assyntax.h"'
+ print '#include "glapioffsets.h"'
+ print ''
+ print '#ifndef __WIN32__'
+ print ''
+ print '#if defined(USE_MGL_NAMESPACE)'
+ print '#define GL_PREFIX(n) GLNAME(mgl ## n)'
+ print '#else'
+ print '#define GL_PREFIX(n) GLNAME(gl ## n)'
+ print '#endif'
+ print ''
+ print '#define GL_OFFSET(x) CODEPTR(REGOFF(4 * x, EAX))'
+ print ''
+ print '#ifdef GNU_ASSEMBLER'
+ print '#define GLOBL_FN(x) GLOBL x ; .type x,@function'
+ print '#else'
+ print '#define GLOBL_FN(x) GLOBL x'
+ print '#endif'
+ print ''
+ print ''
+ return
+#endif
+
+
+def PrintTail():
+ print ''
+ print '#endif /* __WIN32__ */'
+#endif
+
+
+def GenerateDispatchCode(name, offset):
+ print 'ALIGNTEXT16'
+ print "GLOBL_FN(GL_PREFIX(%s))" % (name)
+ print "GL_PREFIX(%s):" % (name)
+ print '\tMOV_L(GLNAME(_glapi_Dispatch), EAX)'
+ print '\tTEST_L(EAX, EAX)'
+ print "\tJZ(GLNAME(_glapi_fallback_%s))" % (name)
+ print "\tJMP(GL_OFFSET(_gloffset_%s))" % (offset)
+ print ''
+#enddef
+
+
+def FindAlias(list, funcName):
+ for i in range(0, len(list)):
+ entry = list[i]
+ if entry[0] == funcName:
+ return entry[1]
+ #endif
+ #endfor
+ return ''
+#enddef
+
+
+
+def PrintDefines():
+ functionPattern = re.compile('^[a-zA-Z0-9]+\(')
+ functionNamePattern = re.compile('^[a-zA-Z0-9]+')
+
+ funcName = ''
+ functions = [ ]
+
+ f = open('gl.spec')
+ for line in f.readlines():
+
+ m = functionPattern.match(line)
+ if m:
+ # extract funcName
+ n = functionNamePattern.findall(line)
+ funcName = n[0]
+
+ m = string.split(line)
+ if len(m) > 1:
+ if m[0] == 'param':
+ paramName = m[1]
+ if m[0] == 'offset':
+ if m[1] == '?':
+ #print 'WARNING skipping', funcName
+ noop = 0
+ else:
+ entry = [ funcName, funcName ]
+ functions.append(entry)
+ #endif
+ elif m[0] == 'alias':
+ aliasedName = FindAlias(functions, m[1])
+ if aliasedName:
+ entry = [ funcName, aliasedName ]
+ functions.append(entry)
+ else:
+ print 'WARNING: alias to unknown function:', aliasedName
+ #endif
+ #endif
+ #endif
+ #endfor
+
+ # Now generate the assembly dispatch code
+ for i in range(0, len(functions)):
+ entry = functions[i]
+ GenerateDispatchCode( entry[0], entry[1] )
+
+#enddef
+
+
+
+PrintHead()
+PrintDefines()
+PrintTail()