1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
#!/usr/bin/env python
# $Id: glx86asm.py,v 1.5 2002/04/02 16:18:20 brianp Exp $
# Mesa 3-D graphics library
# Version: 4.1
#
# Copyright (C) 1999-2001 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 src/X86/glapi_x86.S file.
#
# Usage:
# gloffsets.py >glapi_x86.S
#
# Dependencies:
# The apispec file must be in the current directory.
import apiparser
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(CONCAT(mgl,n))'
print '#else'
print '#define GL_PREFIX(n) 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)'
print '#define GLOBL_FN(x) GLOBL x ; .type x,@function'
print '#else'
print '#define GLOBL_FN(x) GLOBL x'
print '#endif'
print ''
print ''
return
#enddef
def PrintTail():
print ''
print '#endif /* __WIN32__ */'
#enddef
records = []
def FindOffset(funcName):
for (name, alias, offset) in records:
if name == funcName:
return offset
#endif
#endfor
return -1
#enddef
def EmitFunction(name, returnType, argTypeList, argNameList, alias, offset):
argList = apiparser.MakeArgList(argTypeList, argNameList)
if alias != '':
dispatchName = alias
else:
dispatchName = name
#endif
if offset < 0:
# try to find offset from alias name
assert dispatchName != ''
offset = FindOffset(dispatchName)
if offset == -1:
#print 'Cannot dispatch %s' % name
return
#endif
#endif
# save this info in case we need to look up an alias later
records.append((name, dispatchName, offset))
# print the assembly code
print 'ALIGNTEXT16'
print "GLOBL_FN(GL_PREFIX(%s))" % (name)
print "GL_PREFIX(%s):" % (name)
print '\tMOV_L(GLNAME(_glapi_Dispatch), EAX)'
print "\tJMP(GL_OFFSET(_gloffset_%s))" % (dispatchName)
print ''
#enddef
PrintHead()
apiparser.ProcessSpecFile("APIspec", EmitFunction)
PrintTail()
|
