/* ** Copyright 2007, 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 #include #include #include #include #include #include "../hooks.h" #include "../egl_impl.h" using namespace android; // ---------------------------------------------------------------------------- // Actual GL entry-points // ---------------------------------------------------------------------------- #undef API_ENTRY #undef CALL_GL_API #undef CALL_GL_API_RETURN #if USE_SLOW_BINDING #define API_ENTRY(_api) _api #define CALL_GL_API(_api, ...) \ gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl; \ if (_c) return _c->_api(__VA_ARGS__); #elif defined(__arm__) #define GET_TLS(reg) "mrc p15, 0, " #reg ", c13, c0, 3 \n" #define API_ENTRY(_api) __attribute__((noinline)) _api #define CALL_GL_API(_api, ...) \ asm volatile( \ GET_TLS(r12) \ "ldr r12, [r12, %[tls]] \n" \ "cmp r12, #0 \n" \ "ldrne pc, [r12, %[api]] \n" \ : \ : [tls] "J"(TLS_SLOT_OPENGL_API*4), \ [api] "J"(__builtin_offsetof(gl_hooks_t, gl._api)) \ : "r12" \ ); #elif defined(__aarch64__) #define API_ENTRY(_api) __attribute__((noinline)) _api #define CALL_GL_API(_api, ...) \ asm volatile( \ "mrs x16, tpidr_el0\n" \ "ldr x16, [x16, %[tls]]\n" \ "cbz x16, 1f\n" \ "ldr x16, [x16, %[api]]\n" \ "br x16\n" \ "1:\n" \ : \ : [tls] "i" (TLS_SLOT_OPENGL_API * sizeof(void*)), \ [api] "i" (__builtin_offsetof(gl_hooks_t, gl._api)) \ : "x16" \ ); #elif defined(__i386__) #define API_ENTRY(_api) __attribute__((noinline,optimize("omit-frame-pointer"))) _api #define CALL_GL_API(_api, ...) \ register void** fn; \ __asm__ volatile( \ "mov %%gs:0, %[fn]\n" \ "mov %P[tls](%[fn]), %[fn]\n" \ "test %[fn], %[fn]\n" \ "je 1f\n" \ "jmp *%P[api](%[fn])\n" \ "1:\n" \ : [fn] "=r" (fn) \ : [tls] "i" (TLS_SLOT_OPENGL_API*sizeof(void*)), \ [api] "i" (__builtin_offsetof(gl_hooks_t, gl._api)) \ : "cc" \ ); #elif defined(__x86_64__) #define API_ENTRY(_api) __attribute__((noinline,optimize("omit-frame-pointer"))) _api #define CALL_GL_API(_api, ...) \ register void** fn; \ __asm__ volatile( \ "mov %%fs:0, %[fn]\n" \ "mov %P[tls](%[fn]), %[fn]\n" \ "test %[fn], %[fn]\n" \ "je 1f\n" \ "jmp *%P[api](%[fn])\n" \ "1:\n" \ : [fn] "=r" (fn) \ : [tls] "i" (TLS_SLOT_OPENGL_API*sizeof(void*)), \ [api] "i" (__builtin_offsetof(gl_hooks_t, gl._api)) \ : "cc" \ ); #elif defined(__mips64) #define API_ENTRY(_api) __attribute__((noinline)) _api #define CALL_GL_API(_api, ...) \ register unsigned long _t0 asm("$12"); \ register unsigned long _fn asm("$25"); \ register unsigned long _tls asm("$3"); \ register unsigned long _v0 asm("$2"); \ 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" \ " move %[v0], $0\n\t" \ ".set pop\n\t" \ : [fn] "=c"(_fn), \ [tls] "=&r"(_tls), \ [t0] "=&r"(_t0), \ [v0] "=&r"(_v0) \ : [OPENGL_API] "I"(TLS_SLOT_OPENGL_API*sizeof(void*)),\ [API] "I"(__builtin_offsetof(gl_hooks_t, gl._api)) \ : \ ); #elif defined(__mips__) #define API_ENTRY(_api) __attribute__((noinline)) _api #define CALL_GL_API(_api, ...) \ register unsigned int _t0 asm("$8"); \ register unsigned int _fn asm("$25"); \ register unsigned int _tls asm("$3"); \ register unsigned int _v0 asm("$2"); \ 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" \ " move %[v0], $0\n\t" \ ".set pop\n\t" \ : [fn] "=c"(_fn), \ [tls] "=&r"(_tls), \ [t0] "=&r"(_t0), \ [v0] "=&r"(_v0) \ : [OPENGL_API] "I"(TLS_SLOT_OPENGL_API*4), \ [API] "I"(__builtin_offsetof(gl_hooks_t, gl._api)) \ : \ ); #endif #define CALL_GL_API_RETURN(_api, ...) \ CALL_GL_API(_api, __VA_ARGS__) \ return 0; extern "C" { #pragma GCC diagnostic ignored "-Wunused-parameter" #include "gl2_api.in" #include "gl2ext_api.in" #pragma GCC diagnostic warning "-Wunused-parameter" } #undef API_ENTRY #undef CALL_GL_API #undef CALL_GL_API_RETURN /* * glGetString() is special because we expose some extensions in the wrapper */ extern "C" const GLubyte * __glGetString(GLenum name); const GLubyte * glGetString(GLenum name) { const GLubyte * ret = egl_get_string_for_current_context(name); if (ret == NULL) { gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl; if(_c) ret = _c->glGetString(name); } return ret; }