replicant-frameworks_native/opengl/libs/EGL/getProcAddress.cpp
Mathias Agopian 24035338ed fix [2421247] implement eglGetProcAddress(), needed in the ndk
Change-Id: I5027a27b43c0dd449a404024087853ca05bb8e4e
2010-08-02 18:23:36 -07:00

177 lines
5.6 KiB
C++

/*
** 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 <stdlib.h>
#include <errno.h>
#include <cutils/log.h>
#include "hooks.h"
// ----------------------------------------------------------------------------
namespace android {
// ----------------------------------------------------------------------------
#undef API_ENTRY
#undef CALL_GL_API
#undef GL_EXTENSION
#undef GL_EXTENSION_NAME
#if defined(__arm__)
#ifdef HAVE_ARM_TLS_REGISTER
#define GET_TLS(reg) \
"mrc p15, 0, " #reg ", c13, c0, 3 \n"
#else
#define GET_TLS(reg) \
"mov " #reg ", #0xFFFF0FFF \n" \
"ldr " #reg ", [" #reg ", #-15] \n"
#endif
#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" \
"ldrne r12, [r12, %[api]] \n" \
"cmpne r12, #0 \n" \
"bxne r12 \n" \
"bx lr \n" \
: \
: [tls] "J"(TLS_SLOT_OPENGL_API*4), \
[api] "J"(__builtin_offsetof(gl_hooks_t, \
ext.extensions[_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 on this architecture"
#endif
GL_EXTENSION(0)
GL_EXTENSION(1)
GL_EXTENSION(2)
GL_EXTENSION(3)
GL_EXTENSION(4)
GL_EXTENSION(5)
GL_EXTENSION(6)
GL_EXTENSION(7)
GL_EXTENSION(8)
GL_EXTENSION(9)
GL_EXTENSION(10)
GL_EXTENSION(11)
GL_EXTENSION(12)
GL_EXTENSION(13)
GL_EXTENSION(14)
GL_EXTENSION(15)
GL_EXTENSION(16)
GL_EXTENSION(17)
GL_EXTENSION(18)
GL_EXTENSION(19)
GL_EXTENSION(20)
GL_EXTENSION(21)
GL_EXTENSION(22)
GL_EXTENSION(23)
GL_EXTENSION(24)
GL_EXTENSION(25)
GL_EXTENSION(26)
GL_EXTENSION(27)
GL_EXTENSION(28)
GL_EXTENSION(29)
GL_EXTENSION(30)
GL_EXTENSION(31)
GL_EXTENSION(32)
GL_EXTENSION(33)
GL_EXTENSION(34)
GL_EXTENSION(35)
GL_EXTENSION(36)
GL_EXTENSION(37)
GL_EXTENSION(38)
GL_EXTENSION(39)
GL_EXTENSION(40)
GL_EXTENSION(41)
GL_EXTENSION(42)
GL_EXTENSION(43)
GL_EXTENSION(44)
GL_EXTENSION(45)
GL_EXTENSION(46)
GL_EXTENSION(47)
GL_EXTENSION(48)
GL_EXTENSION(49)
GL_EXTENSION(50)
GL_EXTENSION(51)
GL_EXTENSION(52)
GL_EXTENSION(53)
GL_EXTENSION(54)
GL_EXTENSION(55)
GL_EXTENSION(56)
GL_EXTENSION(57)
GL_EXTENSION(58)
GL_EXTENSION(59)
GL_EXTENSION(60)
GL_EXTENSION(61)
GL_EXTENSION(62)
GL_EXTENSION(63)
extern const __eglMustCastToProperFunctionPointerType gExtensionForwarders[MAX_NUMBER_OF_GL_EXTENSIONS] = {
GL_EXTENSION_NAME(0), GL_EXTENSION_NAME(1), GL_EXTENSION_NAME(2), GL_EXTENSION_NAME(3),
GL_EXTENSION_NAME(4), GL_EXTENSION_NAME(5), GL_EXTENSION_NAME(6), GL_EXTENSION_NAME(7),
GL_EXTENSION_NAME(8), GL_EXTENSION_NAME(9), GL_EXTENSION_NAME(10), GL_EXTENSION_NAME(11),
GL_EXTENSION_NAME(12), GL_EXTENSION_NAME(13), GL_EXTENSION_NAME(14), GL_EXTENSION_NAME(15),
GL_EXTENSION_NAME(16), GL_EXTENSION_NAME(17), GL_EXTENSION_NAME(18), GL_EXTENSION_NAME(19),
GL_EXTENSION_NAME(20), GL_EXTENSION_NAME(21), GL_EXTENSION_NAME(22), GL_EXTENSION_NAME(23),
GL_EXTENSION_NAME(24), GL_EXTENSION_NAME(25), GL_EXTENSION_NAME(26), GL_EXTENSION_NAME(27),
GL_EXTENSION_NAME(28), GL_EXTENSION_NAME(29), GL_EXTENSION_NAME(30), GL_EXTENSION_NAME(31),
GL_EXTENSION_NAME(32), GL_EXTENSION_NAME(33), GL_EXTENSION_NAME(34), GL_EXTENSION_NAME(35),
GL_EXTENSION_NAME(36), GL_EXTENSION_NAME(37), GL_EXTENSION_NAME(38), GL_EXTENSION_NAME(39),
GL_EXTENSION_NAME(40), GL_EXTENSION_NAME(41), GL_EXTENSION_NAME(42), GL_EXTENSION_NAME(43),
GL_EXTENSION_NAME(44), GL_EXTENSION_NAME(45), GL_EXTENSION_NAME(46), GL_EXTENSION_NAME(47),
GL_EXTENSION_NAME(48), GL_EXTENSION_NAME(49), GL_EXTENSION_NAME(50), GL_EXTENSION_NAME(51),
GL_EXTENSION_NAME(52), GL_EXTENSION_NAME(53), GL_EXTENSION_NAME(54), GL_EXTENSION_NAME(55),
GL_EXTENSION_NAME(56), GL_EXTENSION_NAME(57), GL_EXTENSION_NAME(58), GL_EXTENSION_NAME(59),
GL_EXTENSION_NAME(60), GL_EXTENSION_NAME(61), GL_EXTENSION_NAME(62), GL_EXTENSION_NAME(63)
};
#undef GL_EXTENSION_NAME
#undef GL_EXTENSION
#undef API_ENTRY
#undef CALL_GL_API
// ----------------------------------------------------------------------------
}; // namespace android
// ----------------------------------------------------------------------------