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review.blissroms.org / platform_frameworks_native / b13c78f8520ef5a96effdee977bbacb881236c66 / . / opengl / libs / EGL / getProcAddress.cpp
blob: 8dcf38dbeccb707ddc9cd49fc172b2e168a8905b [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#include "hooks.h"
25
26// ----------------------------------------------------------------------------
27namespace android {
28// ----------------------------------------------------------------------------
29
30#undef API_ENTRY
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]31#undef CALL_GL_EXTENSION_API
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]32#undef GL_EXTENSION
33#undef GL_EXTENSION_NAME
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]34#undef GL_EXTENSION_ARRAY
35#undef GL_EXTENSION_LIST
36#undef GET_TLS
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]37
Mathias Agopian1cadb252011-05-23 17:26:14 -0700[diff] [blame]38#if USE_FAST_TLS_KEY
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]39
40 #ifdef HAVE_ARM_TLS_REGISTER
41 #define GET_TLS(reg) \
42 "mrc p15, 0, " #reg ", c13, c0, 3 \n"
43 #else
44 #define GET_TLS(reg) \
45 "mov " #reg ", #0xFFFF0FFF \n" \
46 "ldr " #reg ", [" #reg ", #-15] \n"
47 #endif
48
49 #define API_ENTRY(_api) __attribute__((naked)) _api
50
51 #define CALL_GL_EXTENSION_API(_api) \
52 asm volatile( \
53 GET_TLS(r12) \
54 "ldr r12, [r12, %[tls]] \n" \
55 "cmp r12, #0 \n" \
56 "ldrne r12, [r12, %[api]] \n" \
57 "cmpne r12, #0 \n" \
58 "bxne r12 \n" \
59 "bx lr \n" \
60 : \
61 : [tls] "J"(TLS_SLOT_OPENGL_API*4), \
62 [api] "J"(__builtin_offsetof(gl_hooks_t, \
63 ext.extensions[_api])) \
64 : \
65 );
66
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]67 #define GL_EXTENSION_NAME(_n) __glExtFwd##_n
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]68
69 #define GL_EXTENSION(_n) \
70 void API_ENTRY(GL_EXTENSION_NAME(_n))() { \
71 CALL_GL_EXTENSION_API(_n); \
72 }
73
74
75#else
76
77 #define GL_EXTENSION_NAME(_n) NULL
78
79 #define GL_EXTENSION(_n)
80
Mathias Agopian1cadb252011-05-23 17:26:14 -0700[diff] [blame]81 #warning "eglGetProcAddress() partially supported"
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]82
83#endif
84
Mathias Agopiana6d86e52012-01-30 17:40:29 -0800[diff] [blame]85
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]86#define GL_EXTENSION_LIST(name) \
Mathias Agopiana6d86e52012-01-30 17:40:29 -0800[diff] [blame]87 name(0) name(1) name(2) name(3) name(4) name(5) name(6) name(7) \
88 name(8) name(9) name(10) name(11) name(12) name(13) name(14) name(15) \
89 name(16) name(17) name(18) name(19) name(20) name(21) name(22) name(23) \
90 name(24) name(25) name(26) name(27) name(28) name(29) name(30) name(31) \
91 name(32) name(33) name(34) name(35) name(36) name(37) name(38) name(39) \
92 name(40) name(41) name(42) name(43) name(44) name(45) name(46) name(47) \
93 name(48) name(49) name(50) name(51) name(52) name(53) name(54) name(55) \
94 name(56) name(57) name(58) name(59) name(60) name(61) name(62) name(63) \
95 name(64) name(65) name(66) name(67) name(68) name(69) name(70) name(71) \
96 name(72) name(73) name(74) name(75) name(76) name(77) name(78) name(79) \
97 name(80) name(81) name(82) name(83) name(84) name(85) name(86) name(87) \
98 name(88) name(89) name(90) name(91) name(92) name(93) name(94) name(95) \
99 name(96) name(97) name(98) name(99) \
100 name(100) name(101) name(102) name(103) name(104) name(105) name(106) name(107) \
101 name(108) name(109) name(110) name(111) name(112) name(113) name(114) name(115) \
102 name(116) name(117) name(118) name(119) name(120) name(121) name(122) name(123) \
103 name(124) name(125) name(126) name(127) name(128) name(129) name(130) name(131) \
104 name(132) name(133) name(134) name(135) name(136) name(137) name(138) name(139) \
105 name(140) name(141) name(142) name(143) name(144) name(145) name(146) name(147) \
106 name(148) name(149) name(150) name(151) name(152) name(153) name(154) name(155) \
107 name(156) name(157) name(158) name(159) name(160) name(161) name(162) name(163) \
108 name(164) name(165) name(166) name(167) name(168) name(169) name(170) name(171) \
109 name(172) name(173) name(174) name(175) name(176) name(177) name(178) name(179) \
110 name(180) name(181) name(182) name(183) name(184) name(185) name(186) name(187) \
111 name(188) name(189) name(190) name(191) name(192) name(193) name(194) name(195) \
112 name(196) name(197) name(198) name(199) \
113 name(200) name(201) name(202) name(203) name(204) name(205) name(206) name(207) \
114 name(208) name(209) name(210) name(211) name(212) name(213) name(214) name(215) \
115 name(216) name(217) name(218) name(219) name(220) name(221) name(222) name(223) \
116 name(224) name(225) name(226) name(227) name(228) name(229) name(230) name(231) \
117 name(232) name(233) name(234) name(235) name(236) name(237) name(238) name(239) \
118 name(240) name(241) name(242) name(243) name(244) name(245) name(246) name(247) \
119 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]120
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]121
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]122GL_EXTENSION_LIST( GL_EXTENSION )
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]123
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]124#define GL_EXTENSION_ARRAY(_n) GL_EXTENSION_NAME(_n),
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]125
126extern const __eglMustCastToProperFunctionPointerType gExtensionForwarders[MAX_NUMBER_OF_GL_EXTENSIONS] = {
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]127 GL_EXTENSION_LIST( GL_EXTENSION_ARRAY )
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]128 };
129
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]130#undef GET_TLS
131#undef GL_EXTENSION_LIST
132#undef GL_EXTENSION_ARRAY
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]133#undef GL_EXTENSION_NAME
134#undef GL_EXTENSION
135#undef API_ENTRY
Mathias Agopian7f781d12010-08-09 18:35:43 -0700[diff] [blame]136#undef CALL_GL_EXTENSION_API
Mathias Agopian24035332010-08-02 17:34:32 -0700[diff] [blame]137
138// ----------------------------------------------------------------------------
139}; // namespace android
140// ----------------------------------------------------------------------------
141