108 lines
2.0 KiB
C
108 lines
2.0 KiB
C
#include <gccore.h>
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#include <fat.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <malloc.h>
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#include <ogc/machine/processor.h>
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#include "loader.h"
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extern void __exception_closeall();
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static void* xfb = NULL;
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static GXRModeObj* rmode = NULL;
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struct Arguments
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{
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int magic;
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char* cmdLine;
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int length;
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};
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void VideoInit(void)
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{
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VIDEO_Init();
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rmode = VIDEO_GetPreferredMode(NULL);
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xfb = MEM_K0_TO_K1(SYS_AllocateFramebuffer(rmode));
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console_init(xfb, 20, 20, rmode->fbWidth, rmode->xfbHeight, rmode->fbWidth * VI_DISPLAY_PIX_SZ);
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VIDEO_Configure(rmode);
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VIDEO_SetNextFramebuffer(xfb);
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VIDEO_SetBlack(FALSE);
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VIDEO_Flush();
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VIDEO_WaitVSync();
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if (rmode->viTVMode & VI_NON_INTERLACE)
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VIDEO_WaitVSync();
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printf("\x1b[2;0H");
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}
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bool IsDollZ(const u8* buffer)
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{
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return (buffer[0x100] == 0x3C);
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}
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bool IsSpecialELF(const u8* buffer)
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{
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return (read32((u32)buffer) == 0x7F454C46 && buffer[0x24] == 0);
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}
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int main(void)
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{
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VideoInit();
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u8* buffer = (u8*)0x92000000;
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entrypoint entry;
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bool execLoaded = false;
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if (ExecIsElf(buffer))
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{
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//printf(" Loading ELF @ address 0x%08X:\n\n", (u32)buffer);
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execLoaded = LoadElf(&entry, buffer);
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}
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else
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{
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//printf(" Loading DOL @ address 0x%08X::\n\n", (u32)buffer);
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execLoaded = LoadDol(&entry, buffer);
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}
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if (!execLoaded)
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return -1;
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u8* execPtr = (u8*)entry;
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if (execPtr[0x20] == 0x41)
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{
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execPtr[0x21] = 0x40;
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DCFlushRange(&execPtr[0x20], 1);
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}
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if (!IsDollZ(buffer) && !IsSpecialELF(buffer))
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{
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u32 argumentsSize = *(vu32*)0x91000000;
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if (argumentsSize > 0)
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{
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u32* ptr = (u32*)entry;
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if (ptr[1] == 0x5F617267)
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{
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struct Arguments* argv = (struct Arguments*)&ptr[2];
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argv->magic = 0x5F617267;
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argv->cmdLine = (char*)0x91000020;
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argv->length = argumentsSize;
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DCFlushRange(&ptr[2], 4);
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}
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}
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}
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SYS_ResetSystem(SYS_SHUTDOWN, 0, 0);
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u32 level = IRQ_Disable();
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__exception_closeall();
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entry();
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IRQ_Restore(level);
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return 0;
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}
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