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relocator: Patch the kernel to allow usage of our custom memory mapping

This commit is contained in:
Maschell 2020-05-30 22:02:21 +02:00
parent 166ecb6bda
commit 82dc811f42
2 changed files with 56 additions and 2 deletions
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50
relocator/src/hooks_patcher_static.cpp
View File

@ -1,6 +1,7 @@
#include "utils/logger.h"
#include "utils/function_patcher.h"
#include "../../source/common/module_defines.h"
#include "globals.h"
#include <malloc.h>
#include <coreinit/dynload.h>
@ -52,9 +53,54 @@ DECL(OSDynLoad_Error, OSDynLoad_FindExport, OSDynLoad_Module module, BOOL isData
return result;
}
DECL(int32_t, KiEffectiveToPhysical, uint32_t addressSpace, uint32_t virtualAddress) {
int32_t result = real_KiEffectiveToPhysical(addressSpace, virtualAddress);
if (result == 0) {
if(MemoryMappingEffectiveToPhysicalPTR != 0){
return ((uint32_t (*)(uint32_t)) ((uint32_t *) MemoryMappingEffectiveToPhysicalPTR))(virtualAddress);
}
}
return result;
}
DECL(int32_t, KiPhysicalToEffectiveCached, uint32_t addressSpace, uint32_t virtualAddress) {
int32_t result = real_KiPhysicalToEffectiveCached(addressSpace, virtualAddress);
if (result == 0) {
if(MemoryMappingPhysicalToEffectivePTR != 0){
return ((uint32_t (*)(uint32_t)) ((uint32_t *) MemoryMappingPhysicalToEffectivePTR))(virtualAddress);
}
}
return result;
}
DECL(int32_t, KiPhysicalToEffectiveUncached, uint32_t addressSpace, uint32_t virtualAddress) {
int32_t result = real_KiPhysicalToEffectiveUncached(addressSpace, virtualAddress);
if (result == 0) {
if(MemoryMappingPhysicalToEffectivePTR != 0){
return ((uint32_t (*)(uint32_t)) ((uint32_t *) MemoryMappingPhysicalToEffectivePTR))(virtualAddress);
}
}
return result;
}
DECL(int32_t, IPCKDriver_ValidatePhysicalAddress, uint32_t u1, uint32_t physStart, uint32_t physEnd) {
int32_t result = real_IPCKDriver_ValidatePhysicalAddress(u1, physStart, physEnd);
if (result == 0) {
if(MemoryMappingPhysicalToEffectivePTR != 0){
return ((uint32_t (*)(uint32_t)) ((uint32_t *) MemoryMappingPhysicalToEffectivePTR))(physStart) > 0;
}
return 1;
}
return result;
}
hooks_magic_t method_hooks_hooks_static[] __attribute__((section(".data"))) = {
MAKE_MAGIC(OSDynLoad_Acquire, LIB_CORE_INIT, STATIC_FUNCTION),
MAKE_MAGIC(OSDynLoad_FindExport, LIB_CORE_INIT, STATIC_FUNCTION)
MAKE_MAGIC(KiEffectiveToPhysical, LIB_CORE_INIT, STATIC_FUNCTION),
MAKE_MAGIC(KiPhysicalToEffectiveCached, LIB_CORE_INIT, STATIC_FUNCTION),
MAKE_MAGIC(KiPhysicalToEffectiveUncached, LIB_CORE_INIT, STATIC_FUNCTION),
MAKE_MAGIC(IPCKDriver_ValidatePhysicalAddress, LIB_CORE_INIT, STATIC_FUNCTION),
MAKE_MAGIC(OSDynLoad_Acquire, LIB_CORE_INIT, STATIC_FUNCTION),
MAKE_MAGIC(OSDynLoad_FindExport, LIB_CORE_INIT, STATIC_FUNCTION)
};
uint32_t method_hooks_size_hooks_static __attribute__((section(".data"))) = sizeof(method_hooks_hooks_static) / sizeof(hooks_magic_t);

8
relocator/src/utils/function_patcher.cpp
View File

@ -247,6 +247,14 @@ int32_t isDynamicFunction(uint32_t physicalAddress) {
uint32_t GetAddressOfFunction(const char *functionName, uint32_t library) {
uint32_t real_addr = 0;
if(strcmp(functionName, "KiEffectiveToPhysical") == 0){
return 0xffee0aac;
}else if(strcmp(functionName, "KiPhysicalToEffectiveCached") == 0){
return 0xffee0a3c;
}else if(strcmp(functionName, "IPCKDriver_ValidatePhysicalAddress") == 0){
return 0xfff0cb5c;
}
OSDynLoad_Module rpl_handle = 0;
if (library == LIB_CORE_INIT) {
if (DEBUG_LOG_DYN) {