Import goldfish HAL sources from devices/generic/goldfish

We import all code here so we can customize and keep in sync with what
we do on the host side more easily.

android/opengl/system/OpenglSystemCommon/EGLClientIface.h

@@ -0,0 +1,41 @@
+/*
+* Copyright 2011 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.
+*/
+
+#ifndef _SYSTEM_COMMON_EGL_CLIENT_IFACE_H
+#define _SYSTEM_COMMON_EGL_CLIENT_IFACE_H
+
+struct EGLThreadInfo;  // defined in ThreadInfo.h
+
+typedef struct {
+    EGLThreadInfo* (*getThreadInfo)();
+    const char* (*getGLString)(int glEnum);
+} EGLClient_eglInterface;
+
+typedef struct {
+    void* (*getProcAddress)(const char *funcName);
+    void (*init)();
+    void (*finish)();
+} EGLClient_glesInterface;
+
+//
+// Any GLES/GLES2 client API library should define a function named "init_emul_gles"
+// with the following prototype,
+// It will be called by EGL after loading the GLES library for initialization
+// and exchanging interface function pointers.
+//
+typedef EGLClient_glesInterface *(*init_emul_gles_t)(EGLClient_eglInterface *eglIface);
+
+#endif