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review.blissroms.org / platform_frameworks_native / 4690754ec38f77431431910ce878850e1c60ab79 / . / opengl / libs / EGL / getProcAddress.cpp
blob: bdfd21c820a2b457403ab4b76c64b1ec71e49a8f [file] [log] [blame]
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]1/*
2 ** Copyright 2009, The Android Open Source Project
3 **
4 ** Licensed under the Apache License, Version 2.0 (the "License");
5 ** you may not use this file except in compliance with the License.
6 ** You may obtain a copy of the License at
7 **
8 ** http://www.apache.org/licenses/LICENSE-2.0
9 **
10 ** Unless required by applicable law or agreed to in writing, software
11 ** distributed under the License is distributed on an "AS IS" BASIS,
12 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 ** See the License for the specific language governing permissions and
14 ** limitations under the License.
15 */
16
17#include <ctype.h>
18#include <stdlib.h>
19#include <errno.h>
20
21#include <cutils/log.h>
22
Mathias Agopian1cadb252011-05-23 17:26:14 -0700[diff] [blame]23#include "egldefs.h"
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]24
25// ----------------------------------------------------------------------------
26namespace android {
27// ----------------------------------------------------------------------------
28
29#undef API_ENTRY
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]30#undef CALL_GL_EXTENSION_API
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]31#undef GL_EXTENSION
32#undef GL_EXTENSION_NAME
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]33#undef GL_EXTENSION_ARRAY
34#undef GL_EXTENSION_LIST
35#undef GET_TLS
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]36
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]37#if defined(__arm__)
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]38
Elliott Hughes288870e2013-02-13 17:30:54 -0800[diff] [blame]39 #define GET_TLS(reg) "mrc p15, 0, " #reg ", c13, c0, 3 \n"
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]40
41 #define API_ENTRY(_api) __attribute__((naked)) _api
42
43 #define CALL_GL_EXTENSION_API(_api) \
44 asm volatile( \
45 GET_TLS(r12) \
46 "ldr r12, [r12, %[tls]] \n" \
47 "cmp r12, #0 \n" \
Pablo Ceballos46907542015-10-27 14:00:42 -0700[diff] [blame^]48 "addne r12, %[api] \n" \
49 "ldrne r12, [r12] \n" \
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]50 "cmpne r12, #0 \n" \
51 "bxne r12 \n" \
52 "bx lr \n" \
53 : \
54 : [tls] "J"(TLS_SLOT_OPENGL_API*4), \
Pablo Ceballos46907542015-10-27 14:00:42 -0700[diff] [blame^]55 [api] "r"(__builtin_offsetof(gl_hooks_t, \
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]56 ext.extensions[_api])) \
Jesse Hall30a41aa2014-05-30 23:32:12 -0700[diff] [blame]57 : "r12" \
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]58 );
59
Jesse Hall30a41aa2014-05-30 23:32:12 -0700[diff] [blame]60#elif defined(__aarch64__)
61
62 #define API_ENTRY(_api) __attribute__((noinline)) _api
63
64 #define CALL_GL_EXTENSION_API(_api) \
65 asm volatile( \
66 "mrs x16, tpidr_el0\n" \
67 "ldr x16, [x16, %[tls]]\n" \
68 "cbz x16, 1f\n" \
69 "ldr x16, [x16, %[api]]\n" \
70 "cbz x16, 1f\n" \
71 "br x16\n" \
72 "1:\n" \
73 : \
74 : [tls] "i" (TLS_SLOT_OPENGL_API * sizeof(void*)), \
75 [api] "i" (__builtin_offsetof(gl_hooks_t, \
76 ext.extensions[_api])) \
77 : "x16" \
78 );
79
mwajdeczc80aafa2014-05-26 13:56:37 +0200[diff] [blame]80#elif defined(__i386__)
81
Michal Wajdeczko701048c2014-08-08 17:26:25 +0200[diff] [blame]82 #define API_ENTRY(_api) __attribute__((noinline,optimize("omit-frame-pointer"))) _api
mwajdeczc80aafa2014-05-26 13:56:37 +0200[diff] [blame]83
84 #define CALL_GL_EXTENSION_API(_api) \
85 register void** fn; \
86 __asm__ volatile( \
87 "mov %%gs:0, %[fn]\n" \
88 "mov %P[tls](%[fn]), %[fn]\n" \
89 "test %[fn], %[fn]\n" \
90 "cmovne %P[api](%[fn]), %[fn]\n" \
91 "test %[fn], %[fn]\n" \
92 "je 1f\n" \
93 "jmp *%[fn]\n" \
94 "1:\n" \
95 : [fn] "=r" (fn) \
96 : [tls] "i" (TLS_SLOT_OPENGL_API*sizeof(void*)), \
97 [api] "i" (__builtin_offsetof(gl_hooks_t, \
98 ext.extensions[_api])) \
99 : "cc" \
100 );
101
102#elif defined(__x86_64__)
103
Michal Wajdeczko701048c2014-08-08 17:26:25 +0200[diff] [blame]104 #define API_ENTRY(_api) __attribute__((noinline,optimize("omit-frame-pointer"))) _api
mwajdeczc80aafa2014-05-26 13:56:37 +0200[diff] [blame]105
106 #define CALL_GL_EXTENSION_API(_api) \
107 register void** fn; \
108 __asm__ volatile( \
109 "mov %%fs:0, %[fn]\n" \
110 "mov %P[tls](%[fn]), %[fn]\n" \
111 "test %[fn], %[fn]\n" \
112 "cmovne %P[api](%[fn]), %[fn]\n" \
113 "test %[fn], %[fn]\n" \
114 "je 1f\n" \
115 "jmp *%[fn]\n" \
116 "1:\n" \
117 : [fn] "=r" (fn) \
118 : [tls] "i" (TLS_SLOT_OPENGL_API*sizeof(void*)), \
119 [api] "i" (__builtin_offsetof(gl_hooks_t, \
120 ext.extensions[_api])) \
121 : "cc" \
122 );
123
Duane Sand6701fbe2014-11-26 13:17:40 -0800[diff] [blame]124#elif defined(__mips64)
125
126 #define API_ENTRY(_api) __attribute__((noinline)) _api
127
128 #define CALL_GL_EXTENSION_API(_api, ...) \
Nikola Veljkovic5f5f6512014-12-26 17:33:14 +0100[diff] [blame]129 register unsigned int _t0 asm("$12"); \
130 register unsigned int _fn asm("$25"); \
131 register unsigned int _tls asm("$3"); \
Duane Sand6701fbe2014-11-26 13:17:40 -0800[diff] [blame]132 asm volatile( \
133 ".set push\n\t" \
134 ".set noreorder\n\t" \
135 "rdhwr %[tls], $29\n\t" \
136 "ld %[t0], %[OPENGL_API](%[tls])\n\t" \
137 "beqz %[t0], 1f\n\t" \
138 " move %[fn], $ra\n\t" \
139 "ld %[t0], %[API](%[t0])\n\t" \
140 "beqz %[t0], 1f\n\t" \
141 " nop\n\t" \
142 "move %[fn], %[t0]\n\t" \
143 "1:\n\t" \
144 "jalr $0, %[fn]\n\t" \
145 " nop\n\t" \
146 ".set pop\n\t" \
147 : [fn] "=c"(_fn), \
148 [tls] "=&r"(_tls), \
149 [t0] "=&r"(_t0) \
150 : [OPENGL_API] "I"(TLS_SLOT_OPENGL_API*4), \
151 [API] "I"(__builtin_offsetof(gl_hooks_t, \
152 ext.extensions[_api])) \
153 : \
154 );
155
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]156#elif defined(__mips__)
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]157
158 #define API_ENTRY(_api) __attribute__((noinline)) _api
159
160 #define CALL_GL_EXTENSION_API(_api, ...) \
Nikola Veljkovic5f5f6512014-12-26 17:33:14 +0100[diff] [blame]161 register unsigned int _t0 asm("$8"); \
162 register unsigned int _fn asm("$25"); \
163 register unsigned int _tls asm("$3"); \
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]164 asm volatile( \
165 ".set push\n\t" \
166 ".set noreorder\n\t" \
Duane Sandecacc3f2015-02-02 16:54:15 -0800[diff] [blame]167 ".set mips32r2\n\t" \
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]168 "rdhwr %[tls], $29\n\t" \
169 "lw %[t0], %[OPENGL_API](%[tls])\n\t" \
170 "beqz %[t0], 1f\n\t" \
171 " move %[fn], $ra\n\t" \
Duane Sand6701fbe2014-11-26 13:17:40 -0800[diff] [blame]172 "lw %[t0], %[API](%[t0])\n\t" \
173 "beqz %[t0], 1f\n\t" \
174 " nop\n\t" \
175 "move %[fn], %[t0]\n\t" \
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]176 "1:\n\t" \
Duane Sand6701fbe2014-11-26 13:17:40 -0800[diff] [blame]177 "jalr $0, %[fn]\n\t" \
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]178 " nop\n\t" \
179 ".set pop\n\t" \
Jesse Hall441f6942013-03-30 23:22:19 -0700[diff] [blame]180 : [fn] "=c"(_fn), \
181 [tls] "=&r"(_tls), \
182 [t0] "=&r"(_t0) \
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]183 : [OPENGL_API] "I"(TLS_SLOT_OPENGL_API*4), \
184 [API] "I"(__builtin_offsetof(gl_hooks_t, \
185 ext.extensions[_api])) \
186 : \
187 );
mwajdeczc80aafa2014-05-26 13:56:37 +0200[diff] [blame]188
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]189#endif
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]190
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]191#if defined(CALL_GL_EXTENSION_API)
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]192 #define GL_EXTENSION_NAME(_n) __glExtFwd##_n
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]193
194 #define GL_EXTENSION(_n) \
195 void API_ENTRY(GL_EXTENSION_NAME(_n))() { \
196 CALL_GL_EXTENSION_API(_n); \
197 }
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]198#else
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]199 #define GL_EXTENSION_NAME(_n) NULL
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]200
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]201 #define GL_EXTENSION(_n)
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]202
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]203 #warning "eglGetProcAddress() partially supported"
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]204#endif
205
Mathias Agopiana6d86e52012-01-30 17:40:29 -0800[diff] [blame]206
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]207#define GL_EXTENSION_LIST(name) \
Mathias Agopiana6d86e52012-01-30 17:40:29 -0800[diff] [blame]208 name(0) name(1) name(2) name(3) name(4) name(5) name(6) name(7) \
209 name(8) name(9) name(10) name(11) name(12) name(13) name(14) name(15) \
210 name(16) name(17) name(18) name(19) name(20) name(21) name(22) name(23) \
211 name(24) name(25) name(26) name(27) name(28) name(29) name(30) name(31) \
212 name(32) name(33) name(34) name(35) name(36) name(37) name(38) name(39) \
213 name(40) name(41) name(42) name(43) name(44) name(45) name(46) name(47) \
214 name(48) name(49) name(50) name(51) name(52) name(53) name(54) name(55) \
215 name(56) name(57) name(58) name(59) name(60) name(61) name(62) name(63) \
216 name(64) name(65) name(66) name(67) name(68) name(69) name(70) name(71) \
217 name(72) name(73) name(74) name(75) name(76) name(77) name(78) name(79) \
218 name(80) name(81) name(82) name(83) name(84) name(85) name(86) name(87) \
219 name(88) name(89) name(90) name(91) name(92) name(93) name(94) name(95) \
220 name(96) name(97) name(98) name(99) \
221 name(100) name(101) name(102) name(103) name(104) name(105) name(106) name(107) \
222 name(108) name(109) name(110) name(111) name(112) name(113) name(114) name(115) \
223 name(116) name(117) name(118) name(119) name(120) name(121) name(122) name(123) \
224 name(124) name(125) name(126) name(127) name(128) name(129) name(130) name(131) \
225 name(132) name(133) name(134) name(135) name(136) name(137) name(138) name(139) \
226 name(140) name(141) name(142) name(143) name(144) name(145) name(146) name(147) \
227 name(148) name(149) name(150) name(151) name(152) name(153) name(154) name(155) \
228 name(156) name(157) name(158) name(159) name(160) name(161) name(162) name(163) \
229 name(164) name(165) name(166) name(167) name(168) name(169) name(170) name(171) \
230 name(172) name(173) name(174) name(175) name(176) name(177) name(178) name(179) \
231 name(180) name(181) name(182) name(183) name(184) name(185) name(186) name(187) \
232 name(188) name(189) name(190) name(191) name(192) name(193) name(194) name(195) \
233 name(196) name(197) name(198) name(199) \
234 name(200) name(201) name(202) name(203) name(204) name(205) name(206) name(207) \
235 name(208) name(209) name(210) name(211) name(212) name(213) name(214) name(215) \
236 name(216) name(217) name(218) name(219) name(220) name(221) name(222) name(223) \
237 name(224) name(225) name(226) name(227) name(228) name(229) name(230) name(231) \
238 name(232) name(233) name(234) name(235) name(236) name(237) name(238) name(239) \
239 name(240) name(241) name(242) name(243) name(244) name(245) name(246) name(247) \
240 name(248) name(249) name(250) name(251) name(252) name(253) name(254) name(255)
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]241
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]242
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]243GL_EXTENSION_LIST( GL_EXTENSION )
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]244
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]245#define GL_EXTENSION_ARRAY(_n) GL_EXTENSION_NAME(_n),
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]246
247extern const __eglMustCastToProperFunctionPointerType gExtensionForwarders[MAX_NUMBER_OF_GL_EXTENSIONS] = {
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]248 GL_EXTENSION_LIST( GL_EXTENSION_ARRAY )
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]249 };
250
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]251#undef GET_TLS
252#undef GL_EXTENSION_LIST
253#undef GL_EXTENSION_ARRAY
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]254#undef GL_EXTENSION_NAME
255#undef GL_EXTENSION
256#undef API_ENTRY
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]257#undef CALL_GL_EXTENSION_API
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]258
259// ----------------------------------------------------------------------------
260}; // namespace android
261// ----------------------------------------------------------------------------
262