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 GLX_USE_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