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review.blissroms.org / platform_frameworks_native / 701048cbe8d35fcd7e00c875e128fae022b27607 / . / opengl / libs / EGL / getProcAddress.cpp
blob: dcac2b207ec119711c754361aa6d6bbb6a71b26e [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
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]123#elif defined(__mips__)
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]124
125 #define API_ENTRY(_api) __attribute__((noinline)) _api
126
127 #define CALL_GL_EXTENSION_API(_api, ...) \
Jesse Hall441f6942013-03-30 23:22:19 -0700[diff] [blame]128 register unsigned int _t0 asm("t0"); \
129 register unsigned int _fn asm("t1"); \
130 register unsigned int _tls asm("v1"); \
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]131 asm volatile( \
132 ".set push\n\t" \
133 ".set noreorder\n\t" \
134 ".set mips32r2\n\t" \
135 "rdhwr %[tls], $29\n\t" \
136 "lw %[t0], %[OPENGL_API](%[tls])\n\t" \
137 "beqz %[t0], 1f\n\t" \
138 " move %[fn], $ra\n\t" \
139 "lw %[fn], %[API](%[t0])\n\t" \
140 "movz %[fn], $ra, %[fn]\n\t" \
141 "1:\n\t" \
142 "j %[fn]\n\t" \
143 " nop\n\t" \
144 ".set pop\n\t" \
Jesse Hall441f6942013-03-30 23:22:19 -0700[diff] [blame]145 : [fn] "=c"(_fn), \
146 [tls] "=&r"(_tls), \
147 [t0] "=&r"(_t0) \
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]148 : [OPENGL_API] "I"(TLS_SLOT_OPENGL_API*4), \
149 [API] "I"(__builtin_offsetof(gl_hooks_t, \
150 ext.extensions[_api])) \
151 : \
152 );
mwajdeczc80aafa2014-05-26 13:56:37 +0200[diff] [blame]153
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]154#endif
Duane Sand46b42532013-03-27 10:58:06 -0700[diff] [blame]155
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]156#if defined(CALL_GL_EXTENSION_API)
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]157 #define GL_EXTENSION_NAME(_n) __glExtFwd##_n
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]158
159 #define GL_EXTENSION(_n) \
160 void API_ENTRY(GL_EXTENSION_NAME(_n))() { \
161 CALL_GL_EXTENSION_API(_n); \
162 }
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]163#else
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]164 #define GL_EXTENSION_NAME(_n) NULL
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]165
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]166 #define GL_EXTENSION(_n)
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]167
Mathias Agopiane0ea89c2013-06-14 19:08:36 -0700[diff] [blame]168 #warning "eglGetProcAddress() partially supported"
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]169#endif
170
Mathias Agopiana6d86e52012-01-30 17:40:29 -0800[diff] [blame]171
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]172#define GL_EXTENSION_LIST(name) \
Mathias Agopiana6d86e52012-01-30 17:40:29 -0800[diff] [blame]173 name(0) name(1) name(2) name(3) name(4) name(5) name(6) name(7) \
174 name(8) name(9) name(10) name(11) name(12) name(13) name(14) name(15) \
175 name(16) name(17) name(18) name(19) name(20) name(21) name(22) name(23) \
176 name(24) name(25) name(26) name(27) name(28) name(29) name(30) name(31) \
177 name(32) name(33) name(34) name(35) name(36) name(37) name(38) name(39) \
178 name(40) name(41) name(42) name(43) name(44) name(45) name(46) name(47) \
179 name(48) name(49) name(50) name(51) name(52) name(53) name(54) name(55) \
180 name(56) name(57) name(58) name(59) name(60) name(61) name(62) name(63) \
181 name(64) name(65) name(66) name(67) name(68) name(69) name(70) name(71) \
182 name(72) name(73) name(74) name(75) name(76) name(77) name(78) name(79) \
183 name(80) name(81) name(82) name(83) name(84) name(85) name(86) name(87) \
184 name(88) name(89) name(90) name(91) name(92) name(93) name(94) name(95) \
185 name(96) name(97) name(98) name(99) \
186 name(100) name(101) name(102) name(103) name(104) name(105) name(106) name(107) \
187 name(108) name(109) name(110) name(111) name(112) name(113) name(114) name(115) \
188 name(116) name(117) name(118) name(119) name(120) name(121) name(122) name(123) \
189 name(124) name(125) name(126) name(127) name(128) name(129) name(130) name(131) \
190 name(132) name(133) name(134) name(135) name(136) name(137) name(138) name(139) \
191 name(140) name(141) name(142) name(143) name(144) name(145) name(146) name(147) \
192 name(148) name(149) name(150) name(151) name(152) name(153) name(154) name(155) \
193 name(156) name(157) name(158) name(159) name(160) name(161) name(162) name(163) \
194 name(164) name(165) name(166) name(167) name(168) name(169) name(170) name(171) \
195 name(172) name(173) name(174) name(175) name(176) name(177) name(178) name(179) \
196 name(180) name(181) name(182) name(183) name(184) name(185) name(186) name(187) \
197 name(188) name(189) name(190) name(191) name(192) name(193) name(194) name(195) \
198 name(196) name(197) name(198) name(199) \
199 name(200) name(201) name(202) name(203) name(204) name(205) name(206) name(207) \
200 name(208) name(209) name(210) name(211) name(212) name(213) name(214) name(215) \
201 name(216) name(217) name(218) name(219) name(220) name(221) name(222) name(223) \
202 name(224) name(225) name(226) name(227) name(228) name(229) name(230) name(231) \
203 name(232) name(233) name(234) name(235) name(236) name(237) name(238) name(239) \
204 name(240) name(241) name(242) name(243) name(244) name(245) name(246) name(247) \
205 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]206
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]207
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]208GL_EXTENSION_LIST( GL_EXTENSION )
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]209
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]210#define GL_EXTENSION_ARRAY(_n) GL_EXTENSION_NAME(_n),
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]211
212extern const __eglMustCastToProperFunctionPointerType gExtensionForwarders[MAX_NUMBER_OF_GL_EXTENSIONS] = {
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]213 GL_EXTENSION_LIST( GL_EXTENSION_ARRAY )
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]214 };
215
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]216#undef GET_TLS
217#undef GL_EXTENSION_LIST
218#undef GL_EXTENSION_ARRAY
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]219#undef GL_EXTENSION_NAME
220#undef GL_EXTENSION
221#undef API_ENTRY
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]222#undef CALL_GL_EXTENSION_API
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]223
224// ----------------------------------------------------------------------------
225}; // namespace android
226// ----------------------------------------------------------------------------
227