mirror of
https://github.com/Fledge68/WiiFlow_Lite.git
synced 2024-11-01 09:05:06 +01:00
143 lines
2.9 KiB
C++
143 lines
2.9 KiB
C++
#include <gccore.h>
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#include <ogcsys.h>
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#include <stdio.h>
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#include <string.h>
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#include <ogc/machine/processor.h>
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#include <vector>
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#include <string>
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#include "gecko/gecko.h"
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#define EXECUTE_ADDR ((u8 *)0x92000000)
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#define BOOTER_ADDR ((u8 *)0x93000000)
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#define ARGS_ADDR ((u8 *)0x93200000)
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using namespace std;
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extern const u8 app_booter_bin[];
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extern const u32 app_booter_bin_size;
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extern const u8 stub_bin[];
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extern const u32 stub_bin_size;
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typedef void (*entrypoint) (void);
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extern "C" { void __exception_closeall(); }
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u32 buffer_size = 0;
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static vector<string> Arguments;
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static bool IsDollZ(u8 *buf)
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{
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u8 cmp1[] = {0x3C};
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return memcmp(&buf[0x100], cmp1, sizeof(cmp1)) == 0;
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}
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static bool IsSpecialELF(u8 *buf)
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{
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u32 cmp1[] = {0x7F454C46};
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u8 cmp2[] = {0x00};
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return memcmp(buf, cmp1, sizeof(cmp1)) == 0 && memcmp(&buf[0x24], cmp2, sizeof(cmp2)) == 0;
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}
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void AddBootArgument(const char * argv)
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{
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string arg(argv);
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Arguments.push_back(arg);
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}
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int LoadHomebrew(const char *filepath)
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{
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if(!filepath)
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return -1;
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FILE *file = fopen(filepath ,"rb");
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if(!file)
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return -2;
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fseek(file, 0, SEEK_END);
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u32 filesize = ftell(file);
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rewind(file);
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buffer_size = filesize;
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fread(EXECUTE_ADDR, 1, buffer_size, file);
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DCFlushRange(EXECUTE_ADDR, buffer_size);
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fclose(file);
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return 1;
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}
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int SetupARGV(struct __argv * args)
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{
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if(!args)
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return -1;
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bzero(args, sizeof(struct __argv));
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args->argvMagic = ARGV_MAGIC;
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u32 argc = 0;
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u32 position = 0;
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u32 stringlength = 1;
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/** Append Arguments **/
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for(u32 i = 0; i < Arguments.size(); i++)
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stringlength += Arguments[i].size()+1;
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args->length = stringlength;
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//! Put the argument into mem2 too, to avoid overwriting it
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args->commandLine = (char *) ARGS_ADDR + sizeof(struct __argv);
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/** Append Arguments **/
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for(u32 i = 0; i < Arguments.size(); i++)
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{
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strcpy(&args->commandLine[position], Arguments[i].c_str());
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position += Arguments[i].size() + 1;
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argc++;
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}
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args->argc = argc;
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args->commandLine[args->length - 1] = '\0';
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args->argv = &args->commandLine;
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args->endARGV = args->argv + 1;
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Arguments.clear();
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return 0;
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}
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void writeStub()
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{
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/* Clear potential homebrew channel stub */
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memset((void*)0x80001800, 0, 0x1800);
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/* Copy our own stub into memory */
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memcpy((void*)0x80001800, stub_bin, stub_bin_size);
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DCFlushRange((void*)0x80001800, stub_bin_size);
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}
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int BootHomebrew()
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{
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struct __argv args;
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if(!IsDollZ(EXECUTE_ADDR) && !IsSpecialELF(EXECUTE_ADDR))
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SetupARGV(&args);
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else
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gprintf("Homebrew Boot Arguments disabled\n");
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memcpy(BOOTER_ADDR, app_booter_bin, app_booter_bin_size);
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DCFlushRange(BOOTER_ADDR, app_booter_bin_size);
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entrypoint exeEntryPoint = (entrypoint)BOOTER_ADDR;
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u32 cookie;
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memmove(ARGS_ADDR, &args, sizeof(args));
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DCFlushRange(ARGS_ADDR, sizeof(args) + args.length);
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/* cleaning up and load dol */
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SYS_ResetSystem(SYS_SHUTDOWN, 0, 0);
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_CPU_ISR_Disable(cookie);
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__exception_closeall();
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exeEntryPoint();
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_CPU_ISR_Restore(cookie);
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return 0;
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}
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