WiiUPluginSystem/loader/src/patcher/function_patcher.cpp

351 lines
14 KiB
C++

/****************************************************************************
* Copyright (C) 2016-2018 Maschell
* With code from chadderz and dimok
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
****************************************************************************/
#include <vector>
#include <algorithm>
#include <stdio.h>
#include <malloc.h>
#include <string.h>
#include <wups.h>
#include "function_patcher.h"
#include <utils/logger.h>
#include <kernel/kernel_defs.h>
#include <kernel/syscalls.h>
#define DEBUG_LOG_DYN 0
rpl_handling rpl_handles[] __attribute__((section(".data"))) = {
{WUPS_LOADER_LIBRARY_AVM, "avm.rpl", 0},
{WUPS_LOADER_LIBRARY_CAMERA, "camera.rpl", 0},
{WUPS_LOADER_LIBRARY_COREINIT, "coreinit.rpl", 0},
{WUPS_LOADER_LIBRARY_DC, "dc.rpl", 0},
{WUPS_LOADER_LIBRARY_DMAE, "dmae.rpl", 0},
{WUPS_LOADER_LIBRARY_DRMAPP, "drmapp.rpl", 0},
{WUPS_LOADER_LIBRARY_ERREULA, "erreula.rpl", 0},
{WUPS_LOADER_LIBRARY_GX2, "gx2.rpl", 0},
{WUPS_LOADER_LIBRARY_H264, "h264.rpl", 0},
{WUPS_LOADER_LIBRARY_LZMA920, "lzma920.rpl", 0},
{WUPS_LOADER_LIBRARY_MIC, "mic.rpl", 0},
{WUPS_LOADER_LIBRARY_NFC, "nfc.rpl", 0},
{WUPS_LOADER_LIBRARY_NIO_PROF, "nio_prof.rpl", 0},
{WUPS_LOADER_LIBRARY_NLIBCURL, "nlibcurl.rpl", 0},
{WUPS_LOADER_LIBRARY_NLIBNSS, "nlibnss.rpl", 0},
{WUPS_LOADER_LIBRARY_NLIBNSS2, "nlibnss2.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_AC, "nn_ac.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_ACP, "nn_acp.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_ACT, "nn_act.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_AOC, "nn_aoc.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_BOSS, "nn_boss.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_CCR, "nn_ccr.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_CMPT, "nn_cmpt.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_DLP, "nn_dlp.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_EC, "nn_ec.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_FP, "nn_fp.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_HAI, "nn_hai.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_HPAD, "nn_hpad.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_IDBE, "nn_idbe.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_NDM, "nn_ndm.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_NETS2, "nn_nets2.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_NFP, "nn_nfp.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_NIM, "nn_nim.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_OLV, "nn_olv.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_PDM, "nn_pdm.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_SAVE, "nn_save.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_SL, "nn_sl.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_SPM, "nn_spm.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_TEMP, "nn_temp.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_UDS, "nn_uds.rpl", 0},
{WUPS_LOADER_LIBRARY_NN_VCTL, "nn_vctl.rpl", 0},
{WUPS_LOADER_LIBRARY_NSYSCCR, "nsysccr.rpl", 0},
{WUPS_LOADER_LIBRARY_NSYSHID, "nsyshid.rpl", 0},
{WUPS_LOADER_LIBRARY_NSYSKBD, "nsyskbd.rpl", 0},
{WUPS_LOADER_LIBRARY_NSYSNET, "nsysnet.rpl", 0},
{WUPS_LOADER_LIBRARY_NSYSUHS, "nsysuhs.rpl", 0},
{WUPS_LOADER_LIBRARY_NSYSUVD, "nsysuvd.rpl", 0},
{WUPS_LOADER_LIBRARY_NTAG, "ntag.rpl", 0},
{WUPS_LOADER_LIBRARY_PADSCORE, "padscore.rpl", 0},
{WUPS_LOADER_LIBRARY_PROC_UI, "proc_ui.rpl", 0},
{WUPS_LOADER_LIBRARY_SNDCORE2, "sndcore2.rpl", 0},
{WUPS_LOADER_LIBRARY_SNDUSER2, "snduser2.rpl", 0},
{WUPS_LOADER_LIBRARY_SND_CORE, "snd_core.rpl", 0},
{WUPS_LOADER_LIBRARY_SND_USER, "snd_user.rpl", 0},
{WUPS_LOADER_LIBRARY_SWKBD, "swkbd.rpl", 0},
{WUPS_LOADER_LIBRARY_SYSAPP, "sysapp.rpl", 0},
{WUPS_LOADER_LIBRARY_TCL, "tcl.rpl", 0},
{WUPS_LOADER_LIBRARY_TVE, "tve.rpl", 0},
{WUPS_LOADER_LIBRARY_UAC, "uac.rpl", 0},
{WUPS_LOADER_LIBRARY_UAC_RPL, "uac_rpl.rpl", 0},
{WUPS_LOADER_LIBRARY_USB_MIC, "usb_mic.rpl", 0},
{WUPS_LOADER_LIBRARY_UVC, "uvc.rpl", 0},
{WUPS_LOADER_LIBRARY_UVD, "uvd.rpl", 0},
{WUPS_LOADER_LIBRARY_VPAD, "vpad.rpl", 0},
{WUPS_LOADER_LIBRARY_VPADBASE, "vpadbase.rpl", 0},
{WUPS_LOADER_LIBRARY_ZLIB125, "zlib125.rpl", 0}
};
void new_PatchInvidualMethodHooks(replacement_data_plugin_t * plugin_data) {
InitAcquireOS();
new_resetLibs();
DEBUG_FUNCTION_LINE("Patching %d given functions\n",plugin_data->number_used_functions);
s32 method_hooks_count = plugin_data->number_used_functions;
u32 skip_instr = 1;
u32 my_instr_len = 6;
u32 instr_len = my_instr_len + skip_instr;
u32 flush_len = 4*instr_len;
for(s32 i = 0; i < method_hooks_count; i++) {
replacement_data_function_t * function_data = &plugin_data->functions[i];
/* Patch branches to it. */
volatile u32 *space = function_data->replace_data;
DEBUG_FUNCTION_LINE("Patching %s ...\n",function_data->function_name);
if(function_data->functionType == STATIC_FUNCTION && function_data->alreadyPatched == 1) {
if(new_isDynamicFunction((u32)OSEffectiveToPhysical((void*)function_data->realAddr))) {
DEBUG_FUNCTION_LINE("INFO: The function %s is a dynamic function.\n", function_data->function_name);
function_data->functionType = DYNAMIC_FUNCTION;
} else {
DEBUG_FUNCTION_LINE("Skipping %s, its already patched\n", function_data->function_name);
continue;
}
}
u32 physical = 0;
u32 repl_addr = (u32)function_data->replaceAddr;
u32 call_addr = (u32)function_data->replaceCall;
u32 real_addr = new_GetAddressOfFunction(function_data->function_name,function_data->library);
if(!real_addr) {
log_printf("\n");
DEBUG_FUNCTION_LINE("OSDynLoad_FindExport failed for %s\n", function_data->function_name);
continue;
}
if(DEBUG_LOG_DYN) {
DEBUG_FUNCTION_LINE("%s is located at %08X!\n", function_data->function_name,real_addr);
}
physical = (u32)OSEffectiveToPhysical((void*)real_addr);
if(!physical) {
log_printf("Error. Something is wrong with the physical address\n");
continue;
}
if(DEBUG_LOG_DYN) {
DEBUG_FUNCTION_LINE("%s physical is located at %08X!\n", function_data->function_name,physical);
}
*(volatile u32 *)(call_addr) = (u32)(space);
SC0x25_KernelCopyData((u32)space, physical, 4);
space++;
//Only works if skip_instr == 1
if(skip_instr == 1) {
// fill the restore instruction section
function_data->realAddr = real_addr;
function_data->restoreInstruction = *(space-1);
if(DEBUG_LOG_DYN) {
DEBUG_FUNCTION_LINE("function_data->realAddr = %08X!\n", function_data->realAddr);
}
if(DEBUG_LOG_DYN) {
DEBUG_FUNCTION_LINE("function_data->restoreInstruction = %08X!\n",function_data->restoreInstruction) ;
}
} else {
log_printf("Error. Can't save %s for restoring!\n", function_data->function_name);
}
//adding jump to real function thx @ dimok for the assembler code
/*
90 61 ff e0 stw r3,-32(r1)
3c 60 12 34 lis r3,4660
60 63 56 78 ori r3,r3,22136
7c 69 03 a6 mtctr r3
80 61 ff e0 lwz r3,-32(r1)
4e 80 04 20 bctr*/
*space = 0x9061FFE0;
space++;
*space = 0x3C600000 | (((real_addr + (skip_instr * 4)) >> 16) & 0x0000FFFF); // lis r3, real_addr@h
space++;
*space = 0x60630000 | ((real_addr + (skip_instr * 4)) & 0x0000ffff); // ori r3, r3, real_addr@l
space++;
*space = 0x7C6903A6; // mtctr r3
space++;
*space = 0x8061FFE0; // lwz r3,-32(r1)
space++;
*space = 0x4E800420; // bctr
space++;
DCFlushRange((void*)(space - instr_len), flush_len);
ICInvalidateRange((unsigned char*)(space - instr_len), flush_len);
//setting jump back
u32 replace_instr = 0x48000002 | (repl_addr & 0x03fffffc);
ICInvalidateRange(&replace_instr, 4);
DCFlushRange(&replace_instr, 4);
SC0x25_KernelCopyData(physical, (u32)OSEffectiveToPhysical(&replace_instr), 4);
ICInvalidateRange((void*)(real_addr), 4);
DCFlushRange((void*)(real_addr), 4);
function_data->alreadyPatched = 1;
DEBUG_FUNCTION_LINE("done with patching %s!\n", function_data->function_name);
}
DEBUG_FUNCTION_LINE("Done with patching given functions!\n");
}
/* ****************************************************************** */
/* RESTORE ORIGINAL INSTRUCTIONS */
/* ****************************************************************** */
void new_RestoreInvidualInstructions(replacement_data_plugin_t * plugin_data) {
InitAcquireOS();
new_resetLibs();
DEBUG_FUNCTION_LINE("Restoring given functions!\n");
s32 method_hooks_count = plugin_data->number_used_functions;
for(s32 i = 0; i < method_hooks_count; i++) {
replacement_data_function_t * function_data = &plugin_data->functions[i];
DEBUG_FUNCTION_LINE("Restoring %s... ",function_data->function_name);
if(function_data->restoreInstruction == 0 || function_data->realAddr == 0) {
log_printf("I dont have the information for the restore =( skip\n");
continue;
}
u32 real_addr = new_GetAddressOfFunction(function_data->function_name,function_data->library);
if(!real_addr) {
log_printf("OSDynLoad_FindExport failed for %s\n", function_data->function_name);
continue;
}
u32 physical = (u32)OSEffectiveToPhysical((void*)real_addr);
if(!physical) {
log_printf("Something is wrong with the physical address\n");
continue;
}
if(new_isDynamicFunction(physical)) {
log_printf("Its a dynamic function. We don't need to restore it!\n",function_data->function_name);
} else {
physical = (u32)OSEffectiveToPhysical((void*)function_data->realAddr); //When its an static function, we need to use the old location
if(DEBUG_LOG_DYN) {
DEBUG_FUNCTION_LINE("Restoring %08X to %08X\n",(u32)function_data->restoreInstruction,physical);
}
SC0x25_KernelCopyData(physical,(u32)&function_data->restoreInstruction, 4);
if(DEBUG_LOG_DYN) {
DEBUG_FUNCTION_LINE("ICInvalidateRange %08X\n",(void*)function_data->realAddr);
}
ICInvalidateRange((void*)function_data->realAddr, 4);
DCFlushRange((void*)function_data->realAddr, 4);
log_printf("done\n");
}
function_data->alreadyPatched = 0; // In case a
}
DEBUG_FUNCTION_LINE("Done with restoring given functions!\n");
}
s32 new_isDynamicFunction(u32 physicalAddress) {
if((physicalAddress & 0x80000000) == 0x80000000) {
return 1;
}
return 0;
}
u32 new_GetAddressOfFunction(const char * functionName,wups_loader_library_type_t library) {
u32 real_addr = 0;
if(strcmp(functionName, "OSDynLoad_Acquire") == 0) {
memcpy(&real_addr, &OSDynLoad_Acquire, 4);
return real_addr;
} else if(strcmp(functionName, "LiWaitOneChunk") == 0) {
real_addr = (u32)addr_LiWaitOneChunk;
return real_addr;
} else if(strcmp(functionName, "LiBounceOneChunk") == 0) {
//! not required on firmwares above 3.1.0
if(OS_FIRMWARE >= 400)
return 0;
u32 addr_LiBounceOneChunk = 0x010003A0;
real_addr = (u32)addr_LiBounceOneChunk;
return real_addr;
}
u32 rpl_handle = 0;
int rpl_handles_size = sizeof rpl_handles / sizeof rpl_handles[0];
for(int i = 0; i< rpl_handles_size; i++) {
if(rpl_handles[i].library == library) {
if(rpl_handles[i].handle == 0) {
DEBUG_FUNCTION_LINE("Lets acquire handle for rpl: %s\n",rpl_handles[i].rplname);
OSDynLoad_Acquire(rpl_handles[i].rplname, &rpl_handles[i].handle);
}
if(rpl_handles[i].handle == 0) {
log_printf("%s failed to acquire\n",rpl_handles[i].rplname);
return 0;
}
rpl_handle = rpl_handles[i].handle;
break;
}
}
if(!rpl_handle) {
DEBUG_FUNCTION_LINE("Failed to find the RPL handle for %s\n", functionName);
return 0;
}
OSDynLoad_FindExport(rpl_handle, 0, functionName, &real_addr);
if(!real_addr) {
DEBUG_FUNCTION_LINE("OSDynLoad_FindExport failed for %s\n", functionName);
return 0;
}
if((library == WUPS_LOADER_LIBRARY_NN_ACP) && (u32)(*(volatile u32*)(real_addr) & 0x48000002) == 0x48000000) {
u32 address_diff = (u32)(*(volatile u32*)(real_addr) & 0x03FFFFFC);
if((address_diff & 0x03000000) == 0x03000000) {
address_diff |= 0xFC000000;
}
real_addr += (s32)address_diff;
if((u32)(*(volatile u32*)(real_addr) & 0x48000002) == 0x48000000) {
return 0;
}
}
return real_addr;
}
void new_resetLibs() {
int rpl_handles_size = sizeof rpl_handles / sizeof rpl_handles[0];
for(int i = 0; i< rpl_handles_size; i++) {
if(rpl_handles[i].handle != 0) {
DEBUG_FUNCTION_LINE("Resetting handle for rpl: %s\n",rpl_handles[i].rplname);
}
rpl_handles[i].handle = 0;
// Release handle?
}
}