-reserved 6mb exclusively for the sd and usb device and partition

handling, now we have 44mb for everything else left (we had 47mb before)

source/devicemounter/sdhc.c

@@ -3,7 +3,7 @@
 #include <string.h>
 #include <ogcsys.h>
 #include <sdcard/wiisd_io.h>
-
+#include "memory/mem2.hpp"
 #include "sdhc.h"
 
 /* IOCTL comamnds */
@@ -25,8 +25,6 @@ static s32 hid = -1, fd = -1;
 static u32 sector_size = SDHC_SECTOR_SIZE;
 static void *sdhc_buf2;
 
-extern void* SYS_AllocArena2MemLo(u32 size,u32 align);
-
 bool SDHC_Init(void)
 {
 	s32 ret;
@@ -49,7 +47,7 @@ bool SDHC_Init(void)
 	// allocate buf2
 	if (sdhc_buf2 == NULL)
 	{
-		sdhc_buf2 = SYS_AllocArena2MemLo(SDHC_MEM2_SIZE, 32);
+		sdhc_buf2 = MEM2_lo_alloc(SDHC_MEM2_SIZE);
 		if (sdhc_buf2 == NULL) goto err;
 	}
 

source/devicemounter/usbstorage.c

@@ -31,7 +31,7 @@
 #include <malloc.h>
 #include <stdio.h>
 #include <string.h>
-
+#include "memory/mem2.hpp"
 #include "usbstorage.h"
 #include "usbstorage_libogc.h"
 #include "usbthread.h"
@@ -69,8 +69,6 @@ u32 hdd_sector_size[2] = { 512, 512 };
 bool first = false;
 int usb_libogc_mode = 0;
 
-extern void* SYS_AllocArena2MemLo(u32 size,u32 align);
-
 inline s32 __USBStorage_isMEM2Buffer(const void *buffer)
 {
 	u32 high_addr = ((u32)buffer) >> 24;
@@ -81,7 +79,7 @@ s32 USBStorage2_Init(u32 port)
 {
 	/* allocate buf2 */
 	if(mem2_ptr == NULL)
-		mem2_ptr = SYS_AllocArena2MemLo(USB_MEM2_SIZE, 32);
+		mem2_ptr = MEM2_lo_alloc(USB_MEM2_SIZE);
 
 	if(usb_libogc_mode)
 	{

source/devicemounter/usbstorage_libogc.c

@@ -38,7 +38,7 @@ distribution.
 #include <errno.h>
 #include <ogc/lwp_heap.h>
 #include <malloc.h>
-
+#include "memory/mem2.hpp"
 #include <ogc/machine/asm.h>
 #include <ogc/machine/processor.h>
 #include <ogc/disc_io.h>
@@ -208,12 +208,7 @@ s32 USBStorage_OGC_Initialize()
 	_CPU_ISR_Disable(level);
 	LWP_InitQueue(&__usbstorage_ogc_waitq);
 	if(!arena_ptr) {
-		arena_ptr = (u8*)ROUNDDOWN32(((u32)SYS_GetArena2Hi() - HEAP_SIZE));
-		if((u32)arena_ptr < (u32)SYS_GetArena2Lo()) {
-			_CPU_ISR_Restore(level);
-			return IPC_ENOMEM;
-		}
-		SYS_SetArena2Hi(arena_ptr);
+		arena_ptr = (u8*)MEM2_lo_alloc(HEAP_SIZE);
 	}
 	__lwp_heap_init(&__heap, arena_ptr, HEAP_SIZE, 32);
 	cbw_buffer=(u8*)__lwp_heap_allocate(&__heap, 32);

source/memory/mem2.cpp

@@ -16,10 +16,14 @@ u32 MALLOC_MEM2 = 0;
 void *MEM1_lo_start = (void*)0x80004000;
 void *MEM1_lo_end = (void*)0x80620000;
 
-void *MEM2_start = (void*)0x90200000;
-void *MEM2_end = (void*)0x93100000;
+void *MEM2_lo_start = (void*)0x90000000;
+void *MEM2_lo_end = (void*)0x90600000;
+
+void *MEM2_start = (void*)0x90600000;
+void *MEM2_end = (void*)0x93200000;
 
 static CMEM2Alloc g_mem1lo;
+static CMEM2Alloc g_mem2lo_gp;
 static CMEM2Alloc g_mem2gp;
 
 extern "C"
@@ -37,7 +41,10 @@ void MEM_init()
 	g_mem1lo.init(MEM1_lo_start, MEM1_lo_end); //about 6mb
 	g_mem1lo.clear();
 
-	g_mem2gp.init(MEM2_start, MEM2_end); //about 47mb
+	g_mem2lo_gp.init(MEM2_lo_start, MEM2_lo_end); //about 6mb
+	g_mem2lo_gp.clear();
+
+	g_mem2gp.init(MEM2_start, MEM2_end); //about 44mb
 	g_mem2gp.clear();
 }
 
@@ -80,16 +87,25 @@ unsigned int MEM1_freesize()
 	return (g_mem1lo.FreeSize() + SYS_GetArena1Size());
 }
 
-void MEM2_cleanup(void)
+
+void *MEM2_lo_alloc(unsigned int s)
 {
-	g_mem2gp.cleanup();
+	return g_mem2lo_gp.allocate(s);
 }
 
-void MEM2_clear(void)
+void *MEM2_lo_realloc(void *p, unsigned int s)
 {
-	g_mem2gp.clear();
+	return g_mem2lo_gp.reallocate(p, s);
 }
 
+void MEM2_lo_free(void *p)
+{
+	if(!p)
+		return;
+	g_mem2lo_gp.release(p);
+}
+
+
 void MEM2_free(void *p)
 {
 	if(!p)
@@ -188,7 +204,12 @@ void __wrap_free(void *p)
 		return;
 
 	if(((u32)p & 0x10000000) != 0)
-		g_mem2gp.release(p);
+	{
+		if(p > MEM2_start)
+			g_mem2gp.release(p);
+		else
+			g_mem2lo_gp.release(p);
+	}
 	else
 		MEM1_free(p);
 }

source/memory/mem2.hpp

@@ -20,8 +20,10 @@ void *MEM1_realloc(void *p, unsigned int s);
 void MEM1_free(void *p);
 unsigned int MEM1_freesize();
 
-void MEM2_cleanup(void);
-void MEM2_clear(void);
+void *MEM2_lo_alloc(unsigned int s);
+void *MEM2_lo_realloc(void *p, unsigned int s);
+void MEM2_lo_free(void *p);
+
 void MEM2_free(void *p);
 void *MEM2_alloc(unsigned int s);
 void *MEM2_memalign(unsigned int /* alignment */, unsigned int s);

source/memory/mem2alloc.cpp

@@ -4,21 +4,8 @@
 #include <ogc/cache.h>
 #include <algorithm>
 #include <string.h>
-
-#define IOS_RELOAD_AREA		0x90200000
-
 #include "lockMutex.hpp"
 
-void CMEM2Alloc::init(unsigned int size)
-{
-	m_baseAddress = (SBlock *)std::max(((u32)SYS_GetArena2Lo() + 31) & ~31, IOS_RELOAD_AREA);
-	m_endAddress = (SBlock *)((u8*)m_baseAddress + std::min(size * 0x100000, SYS_GetArena2Size() & ~31));
-	if (m_endAddress > (SBlock *)0x93100000) //rest is reserved for usb/usb2/network and other stuff... (0xE0000 bytes)
-		m_endAddress = (SBlock *)0x93100000;
-	SYS_SetArena2Lo(m_endAddress);
-	LWP_MutexInit(&m_mutex, 0);
-}
-
 void CMEM2Alloc::init(void *addr, void *end)
 {
 	m_baseAddress = (SBlock *)(((u32)addr + 31) & ~31);
@@ -32,8 +19,8 @@ void CMEM2Alloc::cleanup(void)
 	m_mutex = 0;
 	m_first = 0;
 	// Try to release the range we took through SYS functions
-	if (SYS_GetArena2Lo() == m_endAddress)
-		SYS_SetArena2Lo(m_baseAddress);
+	/*if (SYS_GetArena2Lo() == m_endAddress)
+		SYS_SetArena2Lo(m_baseAddress);*/
 	m_baseAddress = 0;
 	m_endAddress = 0;
 }

source/menu/menu_game.cpp

@@ -961,7 +961,6 @@ void CMenu::_launchHomebrew(const char *filepath, vector<string> arguments)
 
 	Playlog_Delete();
 	cleanup(); // wifi and sd gecko doesnt work anymore after cleanup
-	loadIOS(58, true);
 
 	LoadHomebrew(filepath);
 	AddBootArgument(filepath);
@@ -970,6 +969,7 @@ void CMenu::_launchHomebrew(const char *filepath, vector<string> arguments)
 		gprintf("Argument: %s\n", arguments[i].c_str());
 		AddBootArgument(arguments[i].c_str());
 	}
+	loadIOS(58, false);
 	ShutdownBeforeExit();
 	BootHomebrew();
 }