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review.blissroms.org / platform_frameworks_native / 1298f4a3cc291130886bfb215681faed92da523c / . / opengl / libs / EGL / getProcAddress.cpp
blob: 660af3347b92cc9812b2209b79793232f16e51e1 [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" \
48 "ldrne r12, [r12, %[api]] \n" \
49 "cmpne r12, #0 \n" \
50 "bxne r12 \n" \
51 "bx lr \n" \
52 : \
53 : [tls] "J"(TLS_SLOT_OPENGL_API*4), \
54 [api] "J"(__builtin_offsetof(gl_hooks_t, \
55 ext.extensions[_api])) \
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
Michal Wajdeczko701048c2014-08-08 17:26:25 +0200[diff] [blame]81 #define API_ENTRY(_api) __attribute__((noinline,optimize("omit-frame-pointer"))) _api
mwajdeczc80aafa2014-05-26 13:56:37 +0200[diff] [blame]82
83 #define CALL_GL_EXTENSION_API(_api) \
84 register void** fn; \
85 __asm__ volatile( \
86 "mov %%gs:0, %[fn]\n" \
87 "mov %P[tls](%[fn]), %[fn]\n" \
88 "test %[fn], %[fn]\n" \
89 "cmovne %P[api](%[fn]), %[fn]\n" \
90 "test %[fn], %[fn]\n" \
91 "je 1f\n" \
92 "jmp *%[fn]\n" \
93 "1:\n" \
94 : [fn] "=r" (fn) \
95 : [tls] "i" (TLS_SLOT_OPENGL_API*sizeof(void*)), \
96 [api] "i" (__builtin_offsetof(gl_hooks_t, \
97 ext.extensions[_api])) \
98 : "cc" \
99 );
100
101#elif defined(__x86_64__)
102
Michal Wajdeczko701048c2014-08-08 17:26:25 +0200[diff] [blame]103 #define API_ENTRY(_api) __attribute__((noinline,optimize("omit-frame-pointer"))) _api
mwajdeczc80aafa2014-05-26 13:56:37 +0200[diff] [blame]104
105 #define CALL_GL_EXTENSION_API(_api) \
106 register void** fn; \
107 __asm__ volatile( \
108 "mov %%fs:0, %[fn]\n" \
109 "mov %P[tls](%[fn]), %[fn]\n" \
110 "test %[fn], %[fn]\n" \
111 "cmovne %P[api](%[fn]), %[fn]\n" \
112 "test %[fn], %[fn]\n" \
113 "je 1f\n" \
114 "jmp *%[fn]\n" \
115 "1:\n" \
116 : [fn] "=r" (fn) \
117 : [tls] "i" (TLS_SLOT_OPENGL_API*sizeof(void*)), \
118 [api] "i" (__builtin_offsetof(gl_hooks_t, \
119 ext.extensions[_api])) \
120 : "cc" \
121 );
122
Duane Sand6701fbe2014-11-26 13:17:40 -0800[diff] [blame]123#elif defined(__mips64)
124
125 #define API_ENTRY(_api) __attribute__((noinline)) _api
126
127 #define CALL_GL_EXTENSION_API(_api, ...) \
Nikola Veljkovic5f5f6512014-12-26 17:33:14 +0100[diff] [blame]128 register unsigned int _t0 asm("$12"); \
129 register unsigned int _fn asm("$25"); \
130 register unsigned int _tls asm("$3"); \
Duane Sand6701fbe2014-11-26 13:17:40 -0800[diff] [blame]131 asm volatile( \
132 ".set push\n\t" \
133 ".set noreorder\n\t" \
134 "rdhwr %[tls], $29\n\t" \
135 "ld %[t0], %[OPENGL_API](%[tls])\n\t" \
136 "beqz %[t0], 1f\n\t" \
137 " move %[fn], $ra\n\t" \
138 "ld %[t0], %[API](%[t0])\n\t" \
139 "beqz %[t0], 1f\n\t" \
140 " nop\n\t" \
141 "move %[fn], %[t0]\n\t" \
142 "1:\n\t" \
143 "jalr $0, %[fn]\n\t" \
144 " nop\n\t" \
145 ".set pop\n\t" \
146 : [fn] "=c"(_fn), \
147 [tls] "=&r"(_tls), \
148 [t0] "=&r"(_t0) \
149 : [OPENGL_API] "I"(TLS_SLOT_OPENGL_API*4), \
150 [API] "I"(__builtin_offsetof(gl_hooks_t, \
151 ext.extensions[_api])) \
152 : \
153 );
154
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]155#elif defined(__mips__)
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]156
157 #define API_ENTRY(_api) __attribute__((noinline)) _api
158
159 #define CALL_GL_EXTENSION_API(_api, ...) \
Nikola Veljkovic5f5f6512014-12-26 17:33:14 +0100[diff] [blame]160 register unsigned int _t0 asm("$8"); \
161 register unsigned int _fn asm("$25"); \
162 register unsigned int _tls asm("$3"); \
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]163 asm volatile( \
164 ".set push\n\t" \
165 ".set noreorder\n\t" \
Duane Sandecacc3f2015-02-02 16:54:15 -0800[diff] [blame]166 ".set mips32r2\n\t" \
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]167 "rdhwr %[tls], $29\n\t" \
168 "lw %[t0], %[OPENGL_API](%[tls])\n\t" \
169 "beqz %[t0], 1f\n\t" \
170 " move %[fn], $ra\n\t" \
Duane Sand6701fbe2014-11-26 13:17:40 -0800[diff] [blame]171 "lw %[t0], %[API](%[t0])\n\t" \
172 "beqz %[t0], 1f\n\t" \
173 " nop\n\t" \
174 "move %[fn], %[t0]\n\t" \
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]175 "1:\n\t" \
Duane Sand6701fbe2014-11-26 13:17:40 -0800[diff] [blame]176 "jalr $0, %[fn]\n\t" \
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]177 " nop\n\t" \
178 ".set pop\n\t" \
Jesse Hall441f6942013-03-30 23:22:19 -0700[diff] [blame]179 : [fn] "=c"(_fn), \
180 [tls] "=&r"(_tls), \
181 [t0] "=&r"(_t0) \
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]182 : [OPENGL_API] "I"(TLS_SLOT_OPENGL_API*4), \
183 [API] "I"(__builtin_offsetof(gl_hooks_t, \
184 ext.extensions[_api])) \
185 : \
186 );
mwajdeczc80aafa2014-05-26 13:56:37 +0200[diff] [blame]187
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]188#endif
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]189
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]190#if defined(CALL_GL_EXTENSION_API)
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]191 #define GL_EXTENSION_NAME(_n) __glExtFwd##_n
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]192
193 #define GL_EXTENSION(_n) \
194 void API_ENTRY(GL_EXTENSION_NAME(_n))() { \
195 CALL_GL_EXTENSION_API(_n); \
196 }
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]197#else
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]198 #define GL_EXTENSION_NAME(_n) NULL
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]199
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]200 #define GL_EXTENSION(_n)
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]201
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]202 #warning "eglGetProcAddress() partially supported"
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]203#endif
204
Mathias Agopiana6d86e52012-01-30 17:40:29 -0800[diff] [blame]205
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]206#define GL_EXTENSION_LIST(name) \
Mathias Agopiana6d86e52012-01-30 17:40:29 -0800[diff] [blame]207 name(0) name(1) name(2) name(3) name(4) name(5) name(6) name(7) \
208 name(8) name(9) name(10) name(11) name(12) name(13) name(14) name(15) \
209 name(16) name(17) name(18) name(19) name(20) name(21) name(22) name(23) \
210 name(24) name(25) name(26) name(27) name(28) name(29) name(30) name(31) \
211 name(32) name(33) name(34) name(35) name(36) name(37) name(38) name(39) \
212 name(40) name(41) name(42) name(43) name(44) name(45) name(46) name(47) \
213 name(48) name(49) name(50) name(51) name(52) name(53) name(54) name(55) \
214 name(56) name(57) name(58) name(59) name(60) name(61) name(62) name(63) \
215 name(64) name(65) name(66) name(67) name(68) name(69) name(70) name(71) \
216 name(72) name(73) name(74) name(75) name(76) name(77) name(78) name(79) \
217 name(80) name(81) name(82) name(83) name(84) name(85) name(86) name(87) \
218 name(88) name(89) name(90) name(91) name(92) name(93) name(94) name(95) \
219 name(96) name(97) name(98) name(99) \
220 name(100) name(101) name(102) name(103) name(104) name(105) name(106) name(107) \
221 name(108) name(109) name(110) name(111) name(112) name(113) name(114) name(115) \
222 name(116) name(117) name(118) name(119) name(120) name(121) name(122) name(123) \
223 name(124) name(125) name(126) name(127) name(128) name(129) name(130) name(131) \
224 name(132) name(133) name(134) name(135) name(136) name(137) name(138) name(139) \
225 name(140) name(141) name(142) name(143) name(144) name(145) name(146) name(147) \
226 name(148) name(149) name(150) name(151) name(152) name(153) name(154) name(155) \
227 name(156) name(157) name(158) name(159) name(160) name(161) name(162) name(163) \
228 name(164) name(165) name(166) name(167) name(168) name(169) name(170) name(171) \
229 name(172) name(173) name(174) name(175) name(176) name(177) name(178) name(179) \
230 name(180) name(181) name(182) name(183) name(184) name(185) name(186) name(187) \
231 name(188) name(189) name(190) name(191) name(192) name(193) name(194) name(195) \
232 name(196) name(197) name(198) name(199) \
233 name(200) name(201) name(202) name(203) name(204) name(205) name(206) name(207) \
234 name(208) name(209) name(210) name(211) name(212) name(213) name(214) name(215) \
235 name(216) name(217) name(218) name(219) name(220) name(221) name(222) name(223) \
236 name(224) name(225) name(226) name(227) name(228) name(229) name(230) name(231) \
237 name(232) name(233) name(234) name(235) name(236) name(237) name(238) name(239) \
238 name(240) name(241) name(242) name(243) name(244) name(245) name(246) name(247) \
239 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]240
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]241
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]242GL_EXTENSION_LIST( GL_EXTENSION )
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]243
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]244#define GL_EXTENSION_ARRAY(_n) GL_EXTENSION_NAME(_n),
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]245
246extern const __eglMustCastToProperFunctionPointerType gExtensionForwarders[MAX_NUMBER_OF_GL_EXTENSIONS] = {
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]247 GL_EXTENSION_LIST( GL_EXTENSION_ARRAY )
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]248 };
249
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]250#undef GET_TLS
251#undef GL_EXTENSION_LIST
252#undef GL_EXTENSION_ARRAY
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]253#undef GL_EXTENSION_NAME
254#undef GL_EXTENSION
255#undef API_ENTRY
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]256#undef CALL_GL_EXTENSION_API
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]257
258// ----------------------------------------------------------------------------
259}; // namespace android
260// ----------------------------------------------------------------------------
261