YAWM-ModMii-Edition/source/appboot.c

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#include <gccore.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ogc/machine/processor.h>
#include <ogc/lwp_threads.h>
#include "fat.h"
#include "sys.h"
#include "wpad.h"
extern void __exception_closeall();
//struct __argv arguments;
//char* m_argv[MAX_ARGV];
//u8* m_Buffer = NULL;
u8* appBuffer = NULL;
u32 appSize = 0;
typedef void (*entrypoint)();
u32 appEntry = 0;
#include "appboot_bin.h"
static void Jump(entrypoint EntryPoint)
{
appEntry = (u32)EntryPoint;
u32 level = IRQ_Disable();
__IOS_ShutdownSubsystems();
__exception_closeall();
__lwp_thread_closeall();
asm volatile (
"lis %r3, appEntry@h\n"
"ori %r3, %r3, appEntry@l\n"
"lwz %r3, 0(%r3)\n"
"mtlr %r3\n"
"blr\n"
);
IRQ_Restore(level);
}
bool LoadApp(const char* path)
{
appBuffer = (u8*)0x92000000;
FILE* f = fopen(path, "rb");
if (f == NULL)
return false;
fseek(f, 0, SEEK_END);
u32 size = ftell(f);
rewind(f);
if (size > 0x1000000)
{
fclose(f);
return false;
}
u32 ret = fread(appBuffer, 1, size, f);
DCFlushRange(appBuffer, (size + 31) & (~31));
fclose(f);
return (ret == size);
}
u8* GetApp(u32* size)
{
*size = appSize;
return appBuffer;
}
void LaunchApp(void)
{
entrypoint entry;
memcpy((u8*)0x93000000, appboot_bin, appboot_bin_size);
DCFlushRange((u8*)0x93000000, appboot_bin_size);
entry = (entrypoint)0x93000000;
Jump(entry);
Sys_LoadMenu();
}