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1
2# (C) Copyright IBM Corporation 2004
3# All Rights Reserved.
4#
5# Permission is hereby granted, free of charge, to any person obtaining a
6# copy of this software and associated documentation files (the "Software"),
7# to deal in the Software without restriction, including without limitation
8# on the rights to use, copy, modify, merge, publish, distribute, sub
9# license, and/or sell copies of the Software, and to permit persons to whom
10# the Software is furnished to do so, subject to the following conditions:
11#
12# The above copyright notice and this permission notice (including the next
13# paragraph) shall be included in all copies or substantial portions of the
14# Software.
15#
16# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
19# IBM AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
22# IN THE SOFTWARE.
23#
24# Authors:
25#    Ian Romanick <idr@us.ibm.com>
26
27import argparse
28
29import license
30import gl_XML, glX_XML
31
32class PrintGenericStubs(gl_XML.gl_print_base):
33    def __init__(self):
34        gl_XML.gl_print_base.__init__(self)
35        self.name = "gl_SPARC_asm.py (from Mesa)"
36        self.license = license.bsd_license_template % ( \
37"""Copyright (C) 1999-2003  Brian Paul   All Rights Reserved.
38(C) Copyright IBM Corporation 2004""", "BRIAN PAUL, IBM")
39
40
41    def printRealHeader(self):
42        print('#ifdef __arch64__')
43        print('#define GL_OFF(N)\t((N) * 8)')
44        print('#define GL_LL\t\tldx')
45        print('#define GL_TIE_LD(SYM)\t%tie_ldx(SYM)')
46        print('#define GL_STACK_SIZE\t128')
47        print('#else')
48        print('#define GL_OFF(N)\t((N) * 4)')
49        print('#define GL_LL\t\tld')
50        print('#define GL_TIE_LD(SYM)\t%tie_ld(SYM)')
51        print('#define GL_STACK_SIZE\t64')
52        print('#endif')
53        print('')
54        print('#define GLOBL_FN(x) .globl x ; .type x, @function')
55        print('#define HIDDEN(x) .hidden x')
56        print('')
57        print('\t.register %g2, #scratch')
58        print('\t.register %g3, #scratch')
59        print('')
60        print('\t.text')
61        print('')
62        print('\tGLOBL_FN(__glapi_sparc_icache_flush)')
63        print('\tHIDDEN(__glapi_sparc_icache_flush)')
64        print('\t.type\t__glapi_sparc_icache_flush, @function')
65        print('__glapi_sparc_icache_flush: /* %o0 = insn_addr */')
66        print('\tflush\t%o0')
67        print('\tretl')
68        print('\t nop')
69        print('')
70        print('\t.align\t32')
71        print('')
72        print('\t.type\t__glapi_sparc_get_pc, @function')
73        print('__glapi_sparc_get_pc:')
74        print('\tretl')
75        print('\t add\t%o7, %g2, %g2')
76        print('\t.size\t__glapi_sparc_get_pc, .-__glapi_sparc_get_pc')
77        print('')
78        print('#ifdef USE_ELF_TLS')
79        print('')
80        print('\tGLOBL_FN(__glapi_sparc_get_dispatch)')
81        print('\tHIDDEN(__glapi_sparc_get_dispatch)')
82        print('__glapi_sparc_get_dispatch:')
83        print('\tmov\t%o7, %g1')
84        print('\tsethi\t%hi(_GLOBAL_OFFSET_TABLE_-4), %g2')
85        print('\tcall\t__glapi_sparc_get_pc')
86        print('\tadd\t%g2, %lo(_GLOBAL_OFFSET_TABLE_+4), %g2')
87        print('\tmov\t%g1, %o7')
88        print('\tsethi\t%tie_hi22(_glapi_tls_Dispatch), %g1')
89        print('\tadd\t%g1, %tie_lo10(_glapi_tls_Dispatch), %g1')
90        print('\tGL_LL\t[%g2 + %g1], %g2, GL_TIE_LD(_glapi_tls_Dispatch)')
91        print('\tretl')
92        print('\t mov\t%g2, %o0')
93        print('')
94        print('\t.data')
95        print('\t.align\t32')
96        print('')
97        print('\t/* --> sethi %hi(_glapi_tls_Dispatch), %g1 */')
98        print('\t/* --> or %g1, %lo(_glapi_tls_Dispatch), %g1 */')
99        print('\tGLOBL_FN(__glapi_sparc_tls_stub)')
100        print('\tHIDDEN(__glapi_sparc_tls_stub)')
101        print('__glapi_sparc_tls_stub: /* Call offset in %g3 */')
102        print('\tmov\t%o7, %g1')
103        print('\tsethi\t%hi(_GLOBAL_OFFSET_TABLE_-4), %g2')
104        print('\tcall\t__glapi_sparc_get_pc')
105        print('\tadd\t%g2, %lo(_GLOBAL_OFFSET_TABLE_+4), %g2')
106        print('\tmov\t%g1, %o7')
107        print('\tsrl\t%g3, 10, %g3')
108        print('\tsethi\t%tie_hi22(_glapi_tls_Dispatch), %g1')
109        print('\tadd\t%g1, %tie_lo10(_glapi_tls_Dispatch), %g1')
110        print('\tGL_LL\t[%g2 + %g1], %g2, GL_TIE_LD(_glapi_tls_Dispatch)')
111        print('\tGL_LL\t[%g7+%g2], %g1')
112        print('\tGL_LL\t[%g1 + %g3], %g1')
113        print('\tjmp\t%g1')
114        print('\t nop')
115        print('\t.size\t__glapi_sparc_tls_stub, .-__glapi_sparc_tls_stub')
116        print('')
117        print('#define GL_STUB(fn, off)\t\t\t\t\\')
118        print('\tGLOBL_FN(fn);\t\t\t\t\t\\')
119        print('fn:\tba\t__glapi_sparc_tls_stub;\t\t\t\\')
120        print('\t sethi\tGL_OFF(off), %g3;\t\t\t\\')
121        print('\t.size\tfn,.-fn;')
122        print('')
123        print('#elif defined(HAVE_PTHREAD)')
124        print('')
125        print('\t/* 64-bit 0x00 --> sethi %hh(_glapi_Dispatch), %g1 */')
126        print('\t/* 64-bit 0x04 --> sethi %lm(_glapi_Dispatch), %g2 */')
127        print('\t/* 64-bit 0x08 --> or %g1, %hm(_glapi_Dispatch), %g1 */')
128        print('\t/* 64-bit 0x0c --> sllx %g1, 32, %g1 */')
129        print('\t/* 64-bit 0x10 --> add %g1, %g2, %g1 */')
130        print('\t/* 64-bit 0x14 --> ldx [%g1 + %lo(_glapi_Dispatch)], %g1 */')
131        print('')
132        print('\t/* 32-bit 0x00 --> sethi %hi(_glapi_Dispatch), %g1 */')
133        print('\t/* 32-bit 0x04 --> ld [%g1 + %lo(_glapi_Dispatch)], %g1 */')
134        print('')
135        print('\t.data')
136        print('\t.align\t32')
137        print('')
138        print('\tGLOBL_FN(__glapi_sparc_pthread_stub)')
139        print('\tHIDDEN(__glapi_sparc_pthread_stub)')
140        print('__glapi_sparc_pthread_stub: /* Call offset in %g3 */')
141        print('\tmov\t%o7, %g1')
142        print('\tsethi\t%hi(_GLOBAL_OFFSET_TABLE_-4), %g2')
143        print('\tcall\t__glapi_sparc_get_pc')
144        print('\t add\t%g2, %lo(_GLOBAL_OFFSET_TABLE_+4), %g2')
145        print('\tmov\t%g1, %o7')
146        print('\tsethi\t%hi(_glapi_Dispatch), %g1')
147        print('\tor\t%g1, %lo(_glapi_Dispatch), %g1')
148        print('\tsrl\t%g3, 10, %g3')
149        print('\tGL_LL\t[%g2+%g1], %g2')
150        print('\tGL_LL\t[%g2], %g1')
151        print('\tcmp\t%g1, 0')
152        print('\tbe\t2f')
153        print('\t nop')
154        print('1:\tGL_LL\t[%g1 + %g3], %g1')
155        print('\tjmp\t%g1')
156        print('\t nop')
157        print('2:\tsave\t%sp, GL_STACK_SIZE, %sp')
158        print('\tmov\t%g3, %l0')
159        print('\tcall\t_glapi_get_dispatch')
160        print('\t nop')
161        print('\tmov\t%o0, %g1')
162        print('\tmov\t%l0, %g3')
163        print('\tba\t1b')
164        print('\t restore %g0, %g0, %g0')
165        print('\t.size\t__glapi_sparc_pthread_stub, .-__glapi_sparc_pthread_stub')
166        print('')
167        print('#define GL_STUB(fn, off)\t\t\t\\')
168        print('\tGLOBL_FN(fn);\t\t\t\t\\')
169        print('fn:\tba\t__glapi_sparc_pthread_stub;\t\\')
170        print('\t sethi\tGL_OFF(off), %g3;\t\t\\')
171        print('\t.size\tfn,.-fn;')
172        print('')
173        print('#else /* Non-threaded version. */')
174        print('')
175        print('\t.type	__glapi_sparc_nothread_stub, @function')
176        print('__glapi_sparc_nothread_stub: /* Call offset in %g3 */')
177        print('\tmov\t%o7, %g1')
178        print('\tsethi\t%hi(_GLOBAL_OFFSET_TABLE_-4), %g2')
179        print('\tcall\t__glapi_sparc_get_pc')
180        print('\t add\t%g2, %lo(_GLOBAL_OFFSET_TABLE_+4), %g2')
181        print('\tmov\t%g1, %o7')
182        print('\tsrl\t%g3, 10, %g3')
183        print('\tsethi\t%hi(_glapi_Dispatch), %g1')
184        print('\tor\t%g1, %lo(_glapi_Dispatch), %g1')
185        print('\tGL_LL\t[%g2+%g1], %g2')
186        print('\tGL_LL\t[%g2], %g1')
187        print('\tGL_LL\t[%g1 + %g3], %g1')
188        print('\tjmp\t%g1')
189        print('\t nop')
190        print('\t.size\t__glapi_sparc_nothread_stub, .-__glapi_sparc_nothread_stub')
191        print('')
192        print('#define GL_STUB(fn, off)\t\t\t\\')
193        print('\tGLOBL_FN(fn);\t\t\t\t\\')
194        print('fn:\tba\t__glapi_sparc_nothread_stub;\t\\')
195        print('\t sethi\tGL_OFF(off), %g3;\t\t\\')
196        print('\t.size\tfn,.-fn;')
197        print('')
198        print('#endif')
199        print('')
200        print('#define GL_STUB_ALIAS(fn, alias)		\\')
201        print('	.globl	fn;				\\')
202        print('	.set	fn, alias')
203        print('')
204        print('\t.text')
205        print('\t.align\t32')
206        print('')
207        print('\t.globl\tgl_dispatch_functions_start')
208        print('\tHIDDEN(gl_dispatch_functions_start)')
209        print('gl_dispatch_functions_start:')
210        print('')
211        return
212
213    def printRealFooter(self):
214        print('')
215        print('\t.globl\tgl_dispatch_functions_end')
216        print('\tHIDDEN(gl_dispatch_functions_end)')
217        print('gl_dispatch_functions_end:')
218        return
219
220    def printBody(self, api):
221        for f in api.functionIterateByOffset():
222            name = f.dispatch_name()
223
224            print('\tGL_STUB(gl%s, %d)' % (name, f.offset))
225
226            if not f.is_static_entry_point(f.name):
227                print('\tHIDDEN(gl%s)' % (name))
228
229        for f in api.functionIterateByOffset():
230            name = f.dispatch_name()
231
232            if f.is_static_entry_point(f.name):
233                for n in f.entry_points:
234                    if n != f.name:
235                        text = '\tGL_STUB_ALIAS(gl%s, gl%s)' % (n, f.name)
236
237                        if f.has_different_protocol(n):
238                            print('#ifndef GLX_INDIRECT_RENDERING')
239                            print(text)
240                            print('#endif')
241                        else:
242                            print(text)
243
244        return
245
246
247def _parser():
248    """Parse arguments and return a namespace."""
249    parser = argparse.ArgumentParser()
250    parser.add_argument('-f',
251                        dest='filename',
252                        default='gl_API.xml',
253                        help='An XML description of an API.')
254    return parser.parse_args()
255
256
257def main():
258    """Main function."""
259    args = _parser()
260    printer = PrintGenericStubs()
261
262    api = gl_XML.parse_GL_API(args.filename, glX_XML.glx_item_factory())
263    printer.Print(api)
264
265
266if __name__ == '__main__':
267    main()
268