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/*
** 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 "egldefs.h"
#include "hooks.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 USE_FAST_TLS_KEY
#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"
#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)
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
// ----------------------------------------------------------------------------
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