mirror of
https://github.com/Fledge68/WiiFlow_Lite.git
synced 2024-11-24 12:19:16 +01:00
159 lines
3.3 KiB
C++
159 lines
3.3 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 "smartptr.hpp"
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#include "gecko.h"
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#include "mem2.hpp"
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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 u32 stubtitlepositions[8] = { 0x80001bf2, 0x80001bf3, 0x80001c06, 0x80001c07,
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0x80001bfa, 0x80001bfb, 0x80001c0a, 0x80001c0b };
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bool IsDollZ (u8 *buff)
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{
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u8 dollz_stamp[] = {0x3C};
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int dollz_offs = 0x100;
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int ret = memcmp (&buff[dollz_offs], dollz_stamp, sizeof(dollz_stamp));
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if (ret == 0)
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return true;
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return false;
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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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static 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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static void writeStub(u64 chan_title)
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{
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u8 i;
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u32 digit;
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char title[2][9];
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snprintf(title[0], sizeof(title[0]), "%08x", TITLE_UPPER(chan_title));
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snprintf(title[1], sizeof(title[1]), "%08x", TITLE_LOWER(chan_title));
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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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/* Write in the Title ID we got */
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for(i = 0; i < 4; i++)
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{
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sscanf(&title[0][i*2], "%02x", &digit);
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//gprintf("%x\n", digit);
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*(vu8*)stubtitlepositions[i] = digit;
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sscanf(&title[1][i*2], "%02x", &digit);
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//gprintf("%x\n", digit);
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*(vu8*)stubtitlepositions[i+4] = digit;
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}
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DCFlushRange((void*)0x80001800, stub_bin_size);
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}
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int BootHomebrew(u64 chan_title)
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{
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writeStub(chan_title);
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struct __argv args;
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if (!IsDollZ(EXECUTE_ADDR))
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SetupARGV(&args);
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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 entry = (entrypoint)BOOTER_ADDR;
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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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SYS_ResetSystem(SYS_SHUTDOWN, 0, 0);
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entry();
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return 0;
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}
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