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gerrit.omnirom.org / android_frameworks_native / 8af03060a9ee64c48ac8342be8775f7d54f9ec20 / . / opengl / libs / EGL / getProcAddress.cpp
blob: b3d6f74e8621211ae44c140011dc59205b967ef6 [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>
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]18#include <errno.h>
Mathias Agopian5f1af042017-03-09 18:50:05 -0800[diff] [blame]19#include <log/log.h>
Yiwei Zhang8af03062020-08-12 21:28:15 -0700[diff] [blame^]20#include <stdlib.h>
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]21
Mathias Agopian1cadb252011-05-23 17:26:14 -0700[diff] [blame]22#include "egldefs.h"
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]23
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]24namespace android {
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]25
26#undef API_ENTRY
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]27#undef CALL_GL_EXTENSION_API
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]28#undef GL_EXTENSION
29#undef GL_EXTENSION_NAME
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]30#undef GL_EXTENSION_ARRAY
31#undef GL_EXTENSION_LIST
32#undef GET_TLS
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]33
Yiwei Zhang8af03062020-08-12 21:28:15 -0700[diff] [blame^]34// clang-format off
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]35#if defined(__arm__)
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]36
Elliott Hughes288870e2013-02-13 17:30:54 -0800[diff] [blame]37 #define GET_TLS(reg) "mrc p15, 0, " #reg ", c13, c0, 3 \n"
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]38
39 #define API_ENTRY(_api) __attribute__((naked)) _api
40
41 #define CALL_GL_EXTENSION_API(_api) \
42 asm volatile( \
43 GET_TLS(r12) \
44 "ldr r12, [r12, %[tls]] \n" \
45 "cmp r12, #0 \n" \
Pablo Ceballos46907542015-10-27 14:00:42 -0700[diff] [blame]46 "addne r12, %[api] \n" \
Mike Stroyanc3685df2016-05-17 14:03:49 -0600[diff] [blame]47 "ldrne r12, [r12, %[ext]] \n" \
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]48 "cmpne r12, #0 \n" \
49 "bxne r12 \n" \
50 "bx lr \n" \
51 : \
52 : [tls] "J"(TLS_SLOT_OPENGL_API*4), \
Mike Stroyanc3685df2016-05-17 14:03:49 -0600[diff] [blame]53 [ext] "J"(__builtin_offsetof(gl_hooks_t, \
54 ext.extensions[0])), \
Krzysztof Kosińskib0bcd262018-04-02 13:53:30 -0700[diff] [blame]55 [api] "I"(_api*sizeof(void*)) \
Jesse Hall30a41aa2014-05-30 23:32:12 -0700[diff] [blame]56 : "r12" \
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]57 );
58
Jesse Hall30a41aa2014-05-30 23:32:12 -0700[diff] [blame]59#elif defined(__aarch64__)
60
61 #define API_ENTRY(_api) __attribute__((noinline)) _api
62
63 #define CALL_GL_EXTENSION_API(_api) \
64 asm volatile( \
65 "mrs x16, tpidr_el0\n" \
66 "ldr x16, [x16, %[tls]]\n" \
67 "cbz x16, 1f\n" \
68 "ldr x16, [x16, %[api]]\n" \
69 "cbz x16, 1f\n" \
70 "br x16\n" \
71 "1:\n" \
72 : \
73 : [tls] "i" (TLS_SLOT_OPENGL_API * sizeof(void*)), \
74 [api] "i" (__builtin_offsetof(gl_hooks_t, \
75 ext.extensions[_api])) \
76 : "x16" \
77 );
78
mwajdeczc80aafa2014-05-26 13:56:37 +0200[diff] [blame]79#elif defined(__i386__)
80
Chris Forbes3ba2f862018-05-17 16:03:59 -0700[diff] [blame]81 #define API_ENTRY(_api) __attribute__((naked)) _api
mwajdeczc80aafa2014-05-26 13:56:37 +0200[diff] [blame]82
83 #define CALL_GL_EXTENSION_API(_api) \
mwajdeczc80aafa2014-05-26 13:56:37 +0200[diff] [blame]84 __asm__ volatile( \
Chris Forbes3ba2f862018-05-17 16:03:59 -0700[diff] [blame]85 "mov %%gs:0, %%eax\n" \
86 "mov %P[tls](%%eax), %%eax\n" \
87 "test %%eax, %%eax\n" \
88 "cmovne %P[api](%%eax), %%eax\n" \
89 "test %%eax, %%eax\n" \
mwajdeczc80aafa2014-05-26 13:56:37 +0200[diff] [blame]90 "je 1f\n" \
Chris Forbes3ba2f862018-05-17 16:03:59 -0700[diff] [blame]91 "jmp *%%eax\n" \
92 "1: ret\n" \
93 : \
mwajdeczc80aafa2014-05-26 13:56:37 +0200[diff] [blame]94 : [tls] "i" (TLS_SLOT_OPENGL_API*sizeof(void*)), \
95 [api] "i" (__builtin_offsetof(gl_hooks_t, \
96 ext.extensions[_api])) \
Chris Forbes3ba2f862018-05-17 16:03:59 -0700[diff] [blame]97 : "eax", "cc" \
mwajdeczc80aafa2014-05-26 13:56:37 +0200[diff] [blame]98 );
99
100#elif defined(__x86_64__)
101
Chris Forbes3ba2f862018-05-17 16:03:59 -0700[diff] [blame]102 #define API_ENTRY(_api) __attribute__((naked)) _api
mwajdeczc80aafa2014-05-26 13:56:37 +0200[diff] [blame]103
104 #define CALL_GL_EXTENSION_API(_api) \
mwajdeczc80aafa2014-05-26 13:56:37 +0200[diff] [blame]105 __asm__ volatile( \
Chris Forbes3ba2f862018-05-17 16:03:59 -0700[diff] [blame]106 "mov %%fs:0, %%rax\n" \
107 "mov %P[tls](%%rax), %%rax\n" \
108 "test %%rax, %%rax\n" \
109 "cmovne %P[api](%%rax), %%rax\n" \
110 "test %%rax, %%rax\n" \
mwajdeczc80aafa2014-05-26 13:56:37 +0200[diff] [blame]111 "je 1f\n" \
Chris Forbes3ba2f862018-05-17 16:03:59 -0700[diff] [blame]112 "jmp *%%rax\n" \
113 "1: ret\n" \
114 : \
mwajdeczc80aafa2014-05-26 13:56:37 +0200[diff] [blame]115 : [tls] "i" (TLS_SLOT_OPENGL_API*sizeof(void*)), \
116 [api] "i" (__builtin_offsetof(gl_hooks_t, \
117 ext.extensions[_api])) \
Chris Forbes3ba2f862018-05-17 16:03:59 -0700[diff] [blame]118 : "rax", "cc" \
mwajdeczc80aafa2014-05-26 13:56:37 +0200[diff] [blame]119 );
120
Duane Sand6701fbe2014-11-26 13:17:40 -0800[diff] [blame]121#elif defined(__mips64)
122
123 #define API_ENTRY(_api) __attribute__((noinline)) _api
124
125 #define CALL_GL_EXTENSION_API(_api, ...) \
Nikola Veljkovic5f5f6512014-12-26 17:33:14 +0100[diff] [blame]126 register unsigned int _t0 asm("$12"); \
127 register unsigned int _fn asm("$25"); \
128 register unsigned int _tls asm("$3"); \
Duane Sand6701fbe2014-11-26 13:17:40 -0800[diff] [blame]129 asm volatile( \
130 ".set push\n\t" \
131 ".set noreorder\n\t" \
132 "rdhwr %[tls], $29\n\t" \
133 "ld %[t0], %[OPENGL_API](%[tls])\n\t" \
134 "beqz %[t0], 1f\n\t" \
135 " move %[fn], $ra\n\t" \
136 "ld %[t0], %[API](%[t0])\n\t" \
137 "beqz %[t0], 1f\n\t" \
138 " nop\n\t" \
139 "move %[fn], %[t0]\n\t" \
140 "1:\n\t" \
141 "jalr $0, %[fn]\n\t" \
142 " nop\n\t" \
143 ".set pop\n\t" \
144 : [fn] "=c"(_fn), \
145 [tls] "=&r"(_tls), \
146 [t0] "=&r"(_t0) \
147 : [OPENGL_API] "I"(TLS_SLOT_OPENGL_API*4), \
148 [API] "I"(__builtin_offsetof(gl_hooks_t, \
149 ext.extensions[_api])) \
150 : \
151 );
152
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]153#elif defined(__mips__)
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]154
155 #define API_ENTRY(_api) __attribute__((noinline)) _api
156
157 #define CALL_GL_EXTENSION_API(_api, ...) \
Nikola Veljkovic5f5f6512014-12-26 17:33:14 +0100[diff] [blame]158 register unsigned int _t0 asm("$8"); \
159 register unsigned int _fn asm("$25"); \
160 register unsigned int _tls asm("$3"); \
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]161 asm volatile( \
162 ".set push\n\t" \
163 ".set noreorder\n\t" \
Duane Sandecacc3f2015-02-02 16:54:15 -0800[diff] [blame]164 ".set mips32r2\n\t" \
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]165 "rdhwr %[tls], $29\n\t" \
166 "lw %[t0], %[OPENGL_API](%[tls])\n\t" \
167 "beqz %[t0], 1f\n\t" \
168 " move %[fn], $ra\n\t" \
Duane Sand6701fbe2014-11-26 13:17:40 -0800[diff] [blame]169 "lw %[t0], %[API](%[t0])\n\t" \
170 "beqz %[t0], 1f\n\t" \
171 " nop\n\t" \
172 "move %[fn], %[t0]\n\t" \
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]173 "1:\n\t" \
Duane Sand6701fbe2014-11-26 13:17:40 -0800[diff] [blame]174 "jalr $0, %[fn]\n\t" \
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]175 " nop\n\t" \
176 ".set pop\n\t" \
Jesse Hall441f6942013-03-30 23:22:19 -0700[diff] [blame]177 : [fn] "=c"(_fn), \
178 [tls] "=&r"(_tls), \
179 [t0] "=&r"(_t0) \
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]180 : [OPENGL_API] "I"(TLS_SLOT_OPENGL_API*4), \
181 [API] "I"(__builtin_offsetof(gl_hooks_t, \
182 ext.extensions[_api])) \
183 : \
184 );
mwajdeczc80aafa2014-05-26 13:56:37 +0200[diff] [blame]185
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]186#endif
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]187
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]188#if defined(CALL_GL_EXTENSION_API)
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]189 #define GL_EXTENSION_NAME(_n) __glExtFwd##_n
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]190
191 #define GL_EXTENSION(_n) \
192 void API_ENTRY(GL_EXTENSION_NAME(_n))() { \
193 CALL_GL_EXTENSION_API(_n); \
194 }
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]195#else
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]196 #define GL_EXTENSION_NAME(_n) NULL
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]197
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]198 #define GL_EXTENSION(_n)
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]199
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]200 #warning "eglGetProcAddress() partially supported"
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]201#endif
202
Mathias Agopiana6d86e52012-01-30 17:40:29 -0800[diff] [blame]203
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]204#define GL_EXTENSION_LIST(name) \
Mathias Agopiana6d86e52012-01-30 17:40:29 -0800[diff] [blame]205 name(0) name(1) name(2) name(3) name(4) name(5) name(6) name(7) \
206 name(8) name(9) name(10) name(11) name(12) name(13) name(14) name(15) \
207 name(16) name(17) name(18) name(19) name(20) name(21) name(22) name(23) \
208 name(24) name(25) name(26) name(27) name(28) name(29) name(30) name(31) \
209 name(32) name(33) name(34) name(35) name(36) name(37) name(38) name(39) \
210 name(40) name(41) name(42) name(43) name(44) name(45) name(46) name(47) \
211 name(48) name(49) name(50) name(51) name(52) name(53) name(54) name(55) \
212 name(56) name(57) name(58) name(59) name(60) name(61) name(62) name(63) \
213 name(64) name(65) name(66) name(67) name(68) name(69) name(70) name(71) \
214 name(72) name(73) name(74) name(75) name(76) name(77) name(78) name(79) \
215 name(80) name(81) name(82) name(83) name(84) name(85) name(86) name(87) \
216 name(88) name(89) name(90) name(91) name(92) name(93) name(94) name(95) \
217 name(96) name(97) name(98) name(99) \
218 name(100) name(101) name(102) name(103) name(104) name(105) name(106) name(107) \
219 name(108) name(109) name(110) name(111) name(112) name(113) name(114) name(115) \
220 name(116) name(117) name(118) name(119) name(120) name(121) name(122) name(123) \
221 name(124) name(125) name(126) name(127) name(128) name(129) name(130) name(131) \
222 name(132) name(133) name(134) name(135) name(136) name(137) name(138) name(139) \
223 name(140) name(141) name(142) name(143) name(144) name(145) name(146) name(147) \
224 name(148) name(149) name(150) name(151) name(152) name(153) name(154) name(155) \
225 name(156) name(157) name(158) name(159) name(160) name(161) name(162) name(163) \
226 name(164) name(165) name(166) name(167) name(168) name(169) name(170) name(171) \
227 name(172) name(173) name(174) name(175) name(176) name(177) name(178) name(179) \
228 name(180) name(181) name(182) name(183) name(184) name(185) name(186) name(187) \
229 name(188) name(189) name(190) name(191) name(192) name(193) name(194) name(195) \
230 name(196) name(197) name(198) name(199) \
231 name(200) name(201) name(202) name(203) name(204) name(205) name(206) name(207) \
232 name(208) name(209) name(210) name(211) name(212) name(213) name(214) name(215) \
233 name(216) name(217) name(218) name(219) name(220) name(221) name(222) name(223) \
234 name(224) name(225) name(226) name(227) name(228) name(229) name(230) name(231) \
235 name(232) name(233) name(234) name(235) name(236) name(237) name(238) name(239) \
236 name(240) name(241) name(242) name(243) name(244) name(245) name(246) name(247) \
237 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]238
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]239
Yiwei Zhang8af03062020-08-12 21:28:15 -0700[diff] [blame^]240GL_EXTENSION_LIST(GL_EXTENSION)
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]241
Yiwei Zhang8af03062020-08-12 21:28:15 -0700[diff] [blame^]242#define GL_EXTENSION_ARRAY(_n) GL_EXTENSION_NAME(_n),
243// clang-format on
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]244
Yiwei Zhang8af03062020-08-12 21:28:15 -0700[diff] [blame^]245extern const __eglMustCastToProperFunctionPointerType
246 gExtensionForwarders[MAX_NUMBER_OF_GL_EXTENSIONS] = {GL_EXTENSION_LIST(GL_EXTENSION_ARRAY)};
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]247
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]248#undef GET_TLS
249#undef GL_EXTENSION_LIST
250#undef GL_EXTENSION_ARRAY
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]251#undef GL_EXTENSION_NAME
252#undef GL_EXTENSION
253#undef API_ENTRY
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]254#undef CALL_GL_EXTENSION_API
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]255
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]256}; // namespace android