The-Homebrew-Cloud/FunctionPatcherModule
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Only patch a function if the module is already loaded

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This commit is contained in:
Maschell 2020-12-26 14:49:48 +01:00
parent 400c3f8f09
commit 00e02a33e1
2 changed files with 22 additions and 17 deletions
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38
source/function_patcher.cpp
View File

@ -2,6 +2,7 @@
#include <coreinit/cache.h>
#include <coreinit/debug.h>
#include <coreinit/memorymap.h>
#include <coreinit/memdefaultheap.h>
#include <kernel/kernel.h>
#include "function_patcher.h"
#include "logger.h"
@ -44,26 +45,26 @@ void FunctionPatcherPatchFunction(function_replacement_data_t *replacements, uin
/* Patch branches to it. */
volatile uint32_t *space = function_data->replace_data;
DEBUG_FUNCTION_LINE("Patching %s ...", function_data->function_name);
if (function_data->library == LIBRARY_OTHER) {
WHBLogWritef("Oh, using straight PA/VA\n");
//WHBLogWritef("Oh, using straight PA/VA\n");
if (function_data->alreadyPatched == 1) {
DEBUG_FUNCTION_LINE("Skipping %s, its already patched\n", function_data->function_name);
//DEBUG_FUNCTION_LINE("Skipping %s, its already patched\n", function_data->function_name);
continue;
}
} else {
if (function_data->functionType == FUNCTION_PATCHER_STATIC_FUNCTION && function_data->alreadyPatched == 1) {
if (isDynamicFunction((uint32_t) OSEffectiveToPhysical(function_data->realAddr))) {
if (function_data->alreadyPatched == 1) {
/*if (isDynamicFunction((uint32_t) OSEffectiveToPhysical(function_data->realAddr))) {
WHBLogWritef("INFO: The function %s is a dynamic function.\n", function_data->function_name);
function_data->functionType = FUNCTION_PATCHER_DYNAMIC_FUNCTION;
} else {
WHBLogPrintf("Skipping %s, its already patched\n", function_data->function_name);
} else {*/
//WHBLogPrintf("Skipping %s, its already patched\n", function_data->function_name);
continue;
}
//}
}
}
DEBUG_FUNCTION_LINE("Patching %s ...", function_data->function_name);
uint32_t physical = function_data->physicalAddr;
uint32_t repl_addr = (uint32_t) function_data->replaceAddr;
uint32_t call_addr = (uint32_t) function_data->replaceCall;
@ -189,7 +190,7 @@ void FunctionPatcherPatchFunction(function_replacement_data_t *replacements, uin
DEBUG_FUNCTION_LINE("done with patching %s!", function_data->function_name);
}
DEBUG_FUNCTION_LINE("Done with patching given functions!");
//DEBUG_FUNCTION_LINE("Done with patching given functions!");
}
@ -215,6 +216,7 @@ void FunctionPatcherRestoreFunctions(function_replacement_data_t *replacements,
replacements[i].targetProcess != FP_TARGET_PROCESS_WII_U_MENU
) {
WHBLogPrintf("Its a dynamic function. We don't need to restore it!", replacements[i].function_name);
replacements[i].alreadyPatched = false;
} else {
if (DEBUG_LOG_DYN) {
WHBLogPrintf("");
@ -321,18 +323,20 @@ rpl_handling rpl_handles[] __attribute__((section(".data"))) = {
uint32_t getAddressOfFunction(char *functionName, function_replacement_library_type_t library) {
uint32_t real_addr = 0;
OSDynLoad_Module rpl_handle = 0;
OSDynLoad_Module rpl_handle = nullptr;
int err = 0;
int32_t rpl_handles_size = sizeof rpl_handles / sizeof rpl_handles[0];
for (int32_t 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", rpl_handles[i].rplname);
OSDynLoad_Acquire((char *) rpl_handles[i].rplname, &rpl_handles[i].handle);
if (rpl_handles[i].handle == nullptr) {
//DEBUG_FUNCTION_LINE("Lets acquire handle for rpl: %s", rpl_handles[i].rplname);
err = OSDynLoad_IsModuleLoaded((char *) rpl_handles[i].rplname, &rpl_handles[i].handle);
}
if (rpl_handles[i].handle == 0) {
WHBLogWritef("%s failed to acquire", rpl_handles[i].rplname);
if (err || !rpl_handles[i].handle) {
WHBLogWritef("%s failed to acquire %d %08X\n", rpl_handles[i].rplname, err, rpl_handles[i].handle);
return 0;
}
rpl_handle = rpl_handles[i].handle;
@ -340,7 +344,7 @@ uint32_t getAddressOfFunction(char *functionName, function_replacement_library_t
}
}
if (!rpl_handle) {
if (err || !rpl_handle) {
DEBUG_FUNCTION_LINE("Failed to find the RPL handle for %s", functionName);
return 0;
}

1
source/main.cpp
View File

@ -9,6 +9,7 @@ WUMS_INITIALIZE(){
}
WUMS_APPLICATION_STARTS() {
WHBLogUdpInit();
FunctionPatcherResetLibHandles();
}