Added support for the Video Memory hook.

src/main.cpp

@@ -54,6 +54,7 @@
 #include "patcher/hooks_patcher.h"
 #include "patcher/hooks_patcher_static.h"
 #include "plugin/dynamic_linking_defines.h"
+#include "myutils/mem_utils.h"
 #include "myutils/mocha.h"
 #include "myutils/libntfs.h"
 #include "myutils/libfat.h"
@@ -135,6 +136,7 @@ extern "C" int32_t Menu_Main(int32_t argc, char **argv) {
         CSettings::destroyInstance();
         PluginLoader::destroyInstance();
 
+        MemoryUtils::init();
     }
 
     DEBUG_FUNCTION_LINE("Patch own stuff\n");
@@ -171,6 +173,7 @@ extern "C" int32_t Menu_Main(int32_t argc, char **argv) {
     }
 
     if(result == APPLICATION_CLOSE_APPLY || result == APPLICATION_CLOSE_APPLY_MEMORY) {
+        CallHook(WUPS_LOADER_HOOK_INIT_VID_MEM);
         CallHook(WUPS_LOADER_HOOK_INIT_KERNEL);
         CallHook(WUPS_LOADER_HOOK_INIT_FS);
         CallHook(WUPS_LOADER_HOOK_INIT_OVERLAY);

src/mymemory/memory_mapping.cpp

@@ -76,6 +76,14 @@ uint32_t MemoryMapping::getHeapSize() {
     return getAreaSizeFromPageTable(MEMORY_START_PLUGIN_HEAP,MEMORY_START_PLUGIN_HEAP_END - MEMORY_START_PLUGIN_HEAP);
 }
 
+uint32_t MemoryMapping::getVideoMemoryAddress() {
+    return MEMORY_START_VIDEO_SPACE;
+}
+
+uint32_t MemoryMapping::getVideoMemorySize() {
+    return getAreaSizeFromPageTable(MEMORY_START_VIDEO_SPACE,MEMORY_START_VIDEO_SPACE_END - MEMORY_START_VIDEO_SPACE);
+}
+
 void MemoryMapping::searchEmptyMemoryRegions() {
     DEBUG_FUNCTION_LINE("Searching for empty memory.\n");
 

src/myutils/mem_utils.cpp

@@ -0,0 +1,37 @@
+/****************************************************************************
+ * Copyright (C) 2018 Maschell
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ ****************************************************************************/
+#include <utils/logger.h>
+#include <wups.h>
+#include <stdarg.h>
+#include "dynamic_libs/os_functions.h"
+#include "mem_utils.h"
+#include "mymemory/memory_mapping.h"
+
+
+int32_t memHandle __attribute__((section(".data"))) = -1;
+
+void MemoryUtils::init(){
+    memHandle = MEMCreateExpHeapEx((void*)MemoryMapping::getVideoMemoryAddress(), MemoryMapping::getVideoMemorySize(), 0);
+}
+
+void* MemoryUtils::alloc(uint32_t size, int32_t align){
+    return MEMAllocFromExpHeapEx(memHandle,size, align);
+}
+
+void MemoryUtils::free(void * ptr){
+   MEMFreeToExpHeap(memHandle,ptr);
+}

src/myutils/mem_utils.h

@@ -0,0 +1,32 @@
+/****************************************************************************
+ * Copyright (C) 2018 Maschell
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ ****************************************************************************/
+#ifndef __MEMORY_UTILS_UTILS_H_
+#define __SCREEN_UTILS_H_
+
+class MemoryUtils {
+public:
+    static void init();
+
+    static void* alloc(uint32_t size, int32_t align);
+
+    static void free(void * ptr);
+private:
+    MemoryUtils() {}
+    ~MemoryUtils() {}
+
+};
+#endif

src/utils.cpp

@@ -14,6 +14,7 @@
 #include "common/common.h"
 #include "common/retain_vars.h"
 #include "myutils/overlay_helper.h"
+#include "myutils/mem_utils.h"
 #include "kernel/syscalls.h"
 
 void CallHook(wups_loader_hook_type_t hook_type) {
@@ -112,6 +113,11 @@ void CallHookEx(wups_loader_hook_type_t hook_type, int32_t plugin_index_needed)
                             ((void (*)(wups_loader_init_kernel_args_t))((uint32_t*)func_ptr) )(args);
                             plugin_data->kernel_init_done = true;
                         }
+                    }  else if(hook_type == WUPS_LOADER_HOOK_INIT_VID_MEM){
+                        wups_loader_init_vid_mem_args_t args;
+                        args.vid_mem_alloc_ptr = &MemoryUtils::alloc;
+                        args.vid_mem_free_ptr = &MemoryUtils::free;
+                        ((void (*)(wups_loader_init_vid_mem_args_t))((uint32_t*)func_ptr) )(args);
                     }else {
                         DEBUG_FUNCTION_LINE("ERROR: HOOK TYPE WAS NOT IMPLEMENTED %08X \n",hook_type);
                     }