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