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
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
|
#!/usr/bin/env python
# encoding=utf-8
# © Copyright IBM Corporation 2004, 2005
# 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
# THE AUTHORS OR COPYRIGHT HOLDERS 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>
import argparse
import textwrap
import glX_XML
import gl_XML
import license
class PrintGenericStubs(gl_XML.gl_print_base):
def __init__(self):
gl_XML.gl_print_base.__init__(self)
self.name = "gl_x86_asm.py (from Mesa)"
self.license = license.bsd_license_template % ( \
textwrap.dedent("""\
Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
(C) Copyright IBM Corporation 2004, 2005"""),
"BRIAN PAUL, IBM")
return
def get_stack_size(self, f):
size = 0
for p in f.parameterIterator():
if p.is_padding:
continue
size += p.get_stack_size()
return size
def printRealHeader(self):
print '#include "x86/assyntax.h"'
print ''
print '#if defined(STDCALL_API)'
print '# if defined(USE_MGL_NAMESPACE)'
print '# define GL_PREFIX(n,n2) GLNAME(CONCAT(mgl,n2))'
print '# else'
print '# define GL_PREFIX(n,n2) GLNAME(CONCAT(gl,n2))'
print '# endif'
print '#else'
print '# if defined(USE_MGL_NAMESPACE)'
print '# define GL_PREFIX(n,n2) GLNAME(CONCAT(mgl,n))'
print '# define _glapi_Dispatch _mglapi_Dispatch'
print '# else'
print '# define GL_PREFIX(n,n2) GLNAME(CONCAT(gl,n))'
print '# endif'
print '#endif'
print ''
print '#define GL_OFFSET(x) CODEPTR(REGOFF(4 * x, EAX))'
print ''
print '#if defined(GNU_ASSEMBLER) && !defined(__MINGW32__) && !defined(__APPLE__)'
print '#define GLOBL_FN(x) GLOBL x ; .type x, @function'
print '#else'
print '#define GLOBL_FN(x) GLOBL x'
print '#endif'
print ''
print ''
print '#ifdef GLX_USE_TLS'
print ''
print '#ifdef GLX_X86_READONLY_TEXT'
print '# define CTX_INSNS MOV_L(GS:(EAX), EAX)'
print '#else'
print '# define CTX_INSNS NOP /* Pad for init_glapi_relocs() */'
print '#endif'
print ''
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 '\tCALL(_x86_get_dispatch) ;\t\t\t\\'
print '\tCTX_INSNS ; \\'
print '\tJMP(GL_OFFSET(off))'
print ''
print '#elif defined(HAVE_PTHREAD)'
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_Dispatch)), 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(_x86_get_dispatch) ;\t\t\t\\'
print '\tJMP(GL_OFFSET(off))'
print '#else'
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_Dispatch)), 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 '#endif'
print ''
print '#ifdef HAVE_ALIAS'
print '# define GL_STUB_ALIAS(fn,off,fn_alt,alias,alias_alt)\t\\'
print '\t.globl\tGL_PREFIX(fn, fn_alt) ;\t\t\t\\'
print '\t.set\tGL_PREFIX(fn, fn_alt), GL_PREFIX(alias, alias_alt)'
print '#else'
print '# define GL_STUB_ALIAS(fn,off,fn_alt,alias,alias_alt)\t\\'
print ' GL_STUB(fn, off, fn_alt)'
print '#endif'
print ''
print 'SEG_TEXT'
print ''
print '#ifdef GLX_USE_TLS'
print ''
print '\tGLOBL\tGLNAME(_x86_get_dispatch)'
print '\tHIDDEN(GLNAME(_x86_get_dispatch))'
print 'ALIGNTEXT16'
print 'GLNAME(_x86_get_dispatch):'
print '\tcall 1f'
print '1:\tpopl %eax'
print '\taddl $_GLOBAL_OFFSET_TABLE_+[.-1b], %eax'
print '\tmovl _glapi_tls_Dispatch@GOTNTPOFF(%eax), %eax'
print '\tret'
print ''
print '#elif defined(HAVE_PTHREAD)'
print 'EXTERN GLNAME(_glapi_Dispatch)'
print 'EXTERN GLNAME(_gl_DispatchTSD)'
print 'EXTERN GLNAME(pthread_getspecific)'
print ''
print 'ALIGNTEXT16'
print 'GLNAME(_x86_get_dispatch):'
print '\tSUB_L(CONST(24), ESP)'
print '\tPUSH_L(GLNAME(_gl_DispatchTSD))'
print '\tCALL(GLNAME(pthread_getspecific))'
print '\tADD_L(CONST(28), ESP)'
print '\tRET'
print '#else'
print 'EXTERN GLNAME(_glapi_get_dispatch)'
print '#endif'
print ''
print '#if defined( GLX_USE_TLS ) && !defined( GLX_X86_READONLY_TEXT )'
print '\t\t.section\twtext, "awx", @progbits'
print '#endif /* defined( GLX_USE_TLS ) */'
print ''
print '\t\tALIGNTEXT16'
print '\t\tGLOBL GLNAME(gl_dispatch_functions_start)'
print '\t\tHIDDEN(GLNAME(gl_dispatch_functions_start))'
print 'GLNAME(gl_dispatch_functions_start):'
print ''
return
def printRealFooter(self):
print ''
print '\t\tGLOBL\tGLNAME(gl_dispatch_functions_end)'
print '\t\tHIDDEN(GLNAME(gl_dispatch_functions_end))'
print '\t\tALIGNTEXT16'
print 'GLNAME(gl_dispatch_functions_end):'
print ''
print '#if defined (__ELF__) && defined (__linux__)'
print ' .section .note.GNU-stack,"",%progbits'
print '#endif'
return
def printBody(self, api):
for f in api.functionIterateByOffset():
name = f.dispatch_name()
stack = self.get_stack_size(f)
alt = "%s@%u" % (name, stack)
print '\tGL_STUB(%s, %d, %s)' % (name, f.offset, alt)
if not f.is_static_entry_point(f.name):
print '\tHIDDEN(GL_PREFIX(%s, %s))' % (name, alt)
for f in api.functionIterateByOffset():
name = f.dispatch_name()
stack = self.get_stack_size(f)
alt = "%s@%u" % (name, stack)
for n in f.entry_points:
if f.is_static_entry_point(n):
if n != f.name:
alt2 = "%s@%u" % (n, stack)
text = '\tGL_STUB_ALIAS(%s, %d, %s, %s, %s)' % (n, f.offset, alt2, name, alt)
if f.has_different_protocol(n):
print '#ifndef GLX_INDIRECT_RENDERING'
print text
print '#endif'
else:
print text
return
def _parser():
parser = argparse.ArgumentParser()
parser.add_argument('-f',
dest='filename',
default='gl_API.xml',
help='An XML file describing an API.')
return parser.parse_args()
def main():
args = _parser()
printer = PrintGenericStubs()
api = gl_XML.parse_GL_API(args.filename, glX_XML.glx_item_factory())
printer.Print(api)
if __name__ == '__main__':
main()
|
