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PatchMemoryRelocationsModule
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Formatting and cleanup

This commit is contained in:
Maschell 2021-09-24 15:01:54 +02:00
parent 075d1ceba0
commit d67a7fb73b
2 changed files with 16 additions and 16 deletions
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4
source/logger.h
View File

@ -19,11 +19,11 @@ extern "C" {
#define DEBUG_FUNCTION_LINE(FMT, ARGS...)do { \
WHBLogPrintf("[%23s]%30s@L%04d: " FMT "",__FILENAME__,__FUNCTION__, __LINE__, ## ARGS); \
} while (0);
} while (0)
#define DEBUG_FUNCTION_LINE_WRITE(FMT, ARGS...)do { \
WHBLogWritef("[%23s]%30s@L%04d: " FMT "",__FILENAME__,__FUNCTION__, __LINE__, ## ARGS); \
} while (0);
} while (0)
#ifdef __cplusplus
}

28
source/main.cpp
View File

@ -2,7 +2,6 @@
#include <whb/log_udp.h>
#include <coreinit/debug.h>
#include <cstring>
#include <coreinit/dynload.h>
#include <coreinit/cache.h>
#include <memory/mappedmemory.h>
#include "logger.h"
@ -11,11 +10,12 @@ WUMS_MODULE_EXPORT_NAME("homebrew_patchmemoryrelocations");
WUMS_MODULE_SKIP_ENTRYPOINT();
WUMS_MODULE_INIT_BEFORE_RELOCATION_DONE_HOOK();
bool elfLinkOne(char type, size_t offset, int32_t addend, uint32_t destination, uint32_t symbol_addr, relocation_trampolin_entry_t *trampolin_data, uint32_t trampolin_data_length, RelocationType reloc_type);
bool elfLinkOne(char type, size_t offset, int32_t addend, uint32_t destination, uint32_t symbol_addr, relocation_trampolin_entry_t *trampolin_data, uint32_t trampolin_data_length,
RelocationType reloc_type);
WUMS_RELOCATIONS_DONE(args) {
module_information_t *gModuleData = args.module_information;
if (args.module_information == NULL) {
if (args.module_information == nullptr) {
OSFatal("PatchMemoryRelocations: Failed to get gModuleData pointer.");
}
if (args.module_information->version != MODULE_INFORMATION_VERSION) {
@ -31,24 +31,23 @@ WUMS_RELOCATIONS_DONE(args) {
continue;
}
DEBUG_FUNCTION_LINE_VERBOSE("Patch relocations of %s", gModuleData->module_data[i].module_export_name);
for (uint32_t j = 0; j < DYN_LINK_RELOCATION_LIST_LENGTH; j++) {
dyn_linking_relocation_entry_t *curEntry = &gModuleData->module_data[i].linking_entries[j];
if (curEntry->functionEntry == NULL) {
for (auto &curEntry: gModuleData->module_data[i].linking_entries) {
if (curEntry.functionEntry == nullptr) {
continue;
}
uint32_t functionAddress = 0;
if (strncmp("coreinit", curEntry->importEntry->importName, DYN_LINK_IMPORT_NAME_LENGTH) == 0) {
if (strncmp("MEMAllocFromDefaultHeap", curEntry->functionEntry->functionName, DYN_LINK_FUNCTION_NAME_LENGTH) == 0) {
if (strncmp("coreinit", curEntry.importEntry->importName, DYN_LINK_IMPORT_NAME_LENGTH) == 0) {
if (strncmp("MEMAllocFromDefaultHeap", curEntry.functionEntry->functionName, DYN_LINK_FUNCTION_NAME_LENGTH) == 0) {
functionAddress = (uint32_t) &MEMAllocFromMappedMemory;
} else if (strncmp("MEMAllocFromDefaultHeapEx", curEntry->functionEntry->functionName, DYN_LINK_FUNCTION_NAME_LENGTH) == 0) {
} else if (strncmp("MEMAllocFromDefaultHeapEx", curEntry.functionEntry->functionName, DYN_LINK_FUNCTION_NAME_LENGTH) == 0) {
functionAddress = (uint32_t) &MEMAllocFromMappedMemoryEx;
} else if (strncmp("MEMFreeToDefaultHeap", curEntry->functionEntry->functionName, DYN_LINK_FUNCTION_NAME_LENGTH) == 0) {
} else if (strncmp("MEMFreeToDefaultHeap", curEntry.functionEntry->functionName, DYN_LINK_FUNCTION_NAME_LENGTH) == 0) {
functionAddress = (uint32_t) &MEMFreeToMappedMemory;
}
if (functionAddress != 0) {
if (!elfLinkOne(curEntry->type, curEntry->offset, curEntry->addend, (uint32_t) curEntry->destination, functionAddress, NULL, 0, RELOC_TYPE_IMPORT)) {
if (!elfLinkOne(curEntry.type, curEntry.offset, curEntry.addend, (uint32_t) curEntry.destination, functionAddress, nullptr, 0, RELOC_TYPE_IMPORT)) {
OSFatal("homebrew_patchmemoryrelocations: Relocation failed\n");
}
}
@ -71,7 +70,8 @@ WUMS_RELOCATIONS_DONE(args) {
#define R_PPC_GHS_REL16_LO 253
// See https://github.com/decaf-emu/decaf-emu/blob/43366a34e7b55ab9d19b2444aeb0ccd46ac77dea/src/libdecaf/src/cafe/loader/cafe_loader_reloc.cpp#L144
bool elfLinkOne(char type, size_t offset, int32_t addend, uint32_t destination, uint32_t symbol_addr, relocation_trampolin_entry_t *trampolin_data, uint32_t trampolin_data_length, RelocationType reloc_type) {
bool elfLinkOne(char type, size_t offset, int32_t addend, uint32_t destination, uint32_t symbol_addr, relocation_trampolin_entry_t *trampolin_data, uint32_t trampolin_data_length,
RelocationType reloc_type) {
if (type == R_PPC_NONE) {
return true;
}
@ -139,12 +139,12 @@ bool elfLinkOne(char type, size_t offset, int32_t addend, uint32_t destination,
// }
auto distance = static_cast<int32_t>(value) - static_cast<int32_t>(target);
if (distance > 0x1FFFFFC || distance < -0x1FFFFFC) {
if (trampolin_data == NULL) {
if (trampolin_data == nullptr) {
DEBUG_FUNCTION_LINE("***24-bit relative branch cannot hit target. Trampoline isn't provided\n");
DEBUG_FUNCTION_LINE("***value %08X - target %08X = distance %08X\n", value, target, distance);
return false;
} else {
relocation_trampolin_entry_t *freeSlot = NULL;
relocation_trampolin_entry_t *freeSlot = nullptr;
for (uint32_t i = 0; i < trampolin_data_length; i++) {
// We want to override "old" relocations of imports
// Pending relocations have the status RELOC_TRAMP_IMPORT_IN_PROGRESS.