commit 9b39c0adf700ab24fd00b4ea657767b874d7e78a Author: Maschell Date: Wed Jun 10 16:27:42 2020 +0200 first commit diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..ba57c28 --- /dev/null +++ b/.gitignore @@ -0,0 +1,10 @@ +*.cbp +*.elf +*.layout +*.rpx +build/ +*.save-failed +.idea/ +cmake-build-debug/ +CMakeLists.txt +*.wms diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..94a9ed0 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..ba65225 --- /dev/null +++ b/Makefile @@ -0,0 +1,142 @@ +#------------------------------------------------------------------------------- +.SUFFIXES: +#------------------------------------------------------------------------------- + +ifeq ($(strip $(DEVKITPRO)),) +$(error "Please set DEVKITPRO in your environment. export DEVKITPRO=/devkitpro") +endif + +TOPDIR ?= $(CURDIR) + +include $(DEVKITPRO)/wums/share/wums_rules + +WUMS_ROOT := $(DEVKITPRO)/wums +WUT_ROOT := $(DEVKITPRO)/wut +#------------------------------------------------------------------------------- +# TARGET is the name of the output +# BUILD is the directory where object files & intermediate files will be placed +# SOURCES is a list of directories containing source code +# DATA is a list of directories containing data files +# INCLUDES is a list of directories containing header files +#------------------------------------------------------------------------------- +TARGET := PatchMemoryRelocationsModule +BUILD := build +SOURCES := source +DATA := data +INCLUDES := source + +#------------------------------------------------------------------------------- +# options for code generation +#------------------------------------------------------------------------------- +CFLAGS := -g -Wall -Wextra -O0 -ffunction-sections\ + $(MACHDEP) + +CFLAGS += $(INCLUDE) -D__WIIU__ -D__WUT__ + +CXXFLAGS := $(CFLAGS) -std=c++17 + +ASFLAGS := -g $(ARCH) +LDFLAGS = -g $(ARCH) $(RPXSPECS) -Wl,-Map,$(notdir $*.map) -T$(WUMS_ROOT)/share/libmappedmemory.ld $(WUMSSPECS) + +LIBS := -lwums -lwut -lmappedmemory + +#------------------------------------------------------------------------------- +# list of directories containing libraries, this must be the top level +# containing include and lib +#------------------------------------------------------------------------------- +LIBDIRS := $(PORTLIBS) $(WUT_ROOT) $(WUMS_ROOT) + + +#------------------------------------------------------------------------------- +# no real need to edit anything past this point unless you need to add additional +# rules for different file extensions +#------------------------------------------------------------------------------- +ifneq ($(BUILD),$(notdir $(CURDIR))) +#------------------------------------------------------------------------------- + +export OUTPUT := $(CURDIR)/$(TARGET) +export TOPDIR := $(CURDIR) + +export VPATH := $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \ + $(foreach dir,$(DATA),$(CURDIR)/$(dir)) + +export DEPSDIR := $(CURDIR)/$(BUILD) + +CFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c))) +CPPFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp))) +SFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s))) +BINFILES := $(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*))) + +#------------------------------------------------------------------------------- +# use CXX for linking C++ projects, CC for standard C +#------------------------------------------------------------------------------- +ifeq ($(strip $(CPPFILES)),) +#------------------------------------------------------------------------------- + export LD := $(CC) +#------------------------------------------------------------------------------- +else +#------------------------------------------------------------------------------- + export LD := $(CXX) +#------------------------------------------------------------------------------- +endif +#------------------------------------------------------------------------------- + +export OFILES_BIN := $(addsuffix .o,$(BINFILES)) +export OFILES_SRC := $(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o) +export OFILES := $(OFILES_BIN) $(OFILES_SRC) +export HFILES_BIN := $(addsuffix .h,$(subst .,_,$(BINFILES))) + +export INCLUDE := $(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \ + $(foreach dir,$(LIBDIRS),-I$(dir)/include) \ + -I$(CURDIR)/$(BUILD) + +export LIBPATHS := $(foreach dir,$(LIBDIRS),-L$(dir)/lib) + +.PHONY: $(BUILD) clean all + +#------------------------------------------------------------------------------- +all: $(BUILD) + +$(BUILD): + @[ -d $@ ] || mkdir -p $@ + @$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile + +#------------------------------------------------------------------------------- +clean: + @echo clean ... + @rm -fr $(BUILD) $(TARGET).rpx $(TARGET).elf + +#------------------------------------------------------------------------------- +else +.PHONY: all + +DEPENDS := $(OFILES:.o=.d) + +#------------------------------------------------------------------------------- +# main targets +#------------------------------------------------------------------------------- +all : $(OUTPUT).wms + +$(OUTPUT).wms : $(OUTPUT).elf +$(OUTPUT).elf : $(OFILES) + +$(OFILES_SRC) : $(HFILES_BIN) + +#------------------------------------------------------------------------------- +# you need a rule like this for each extension you use as binary data +#------------------------------------------------------------------------------- +%.bin.o %_bin.h : %.bin +#------------------------------------------------------------------------------- + @echo $(notdir $<) + @$(bin2o) + +#--------------------------------------------------------------------------------- +%.o: %.s + @echo $(notdir $<) + @$(CC) -MMD -MP -MF $(DEPSDIR)/$*.d -x assembler-with-cpp $(ASFLAGS) -c $< -o $@ $(ERROR_FILTER) + +-include $(DEPENDS) + +#------------------------------------------------------------------------------- +endif +#------------------------------------------------------------------------------- diff --git a/README.md b/README.md new file mode 100644 index 0000000..464cb85 --- /dev/null +++ b/README.md @@ -0,0 +1,10 @@ +# PatchMemoryRelocationsModule +Replaces the usage of `MEMAllocFromDefaultHeap`, `MEMAllocFromDefaultHeapEx` and `MEMFreeToDefaultHeap` with similar function from the MemoryMappingModule in the currently running modules. + +# Usage +Run this module via [SetupPayload](https://github.com/wiiu-env/SetupPayload/), requires the [MemoryMappingModule](https://github.com/wiiu-env/MemoryMappingModule) to be running at the same time. + +# Dependencies: +- [WUT] (https://github.com/decaf-emu/wut) +- [WUMS](https://github.com/wiiu-env/WiiUModuleSystem) +- [MemoryMappingModule](https://github.com/wiiu-env/MemoryMappingModule) & [libmappedmemory](https://github.com/wiiu-env/libmappedmemory) \ No newline at end of file diff --git a/source/logger.h b/source/logger.h new file mode 100644 index 0000000..ceb3111 --- /dev/null +++ b/source/logger.h @@ -0,0 +1,30 @@ +#ifndef __LOGGER_H_ +#define __LOGGER_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +#include +#include + +#define __FILENAME_X__ (strrchr(__FILE__, '\\') ? strrchr(__FILE__, '\\') + 1 : __FILE__) +#define __FILENAME__ (strrchr(__FILE__, '/') ? strrchr(__FILE__, '/') + 1 : __FILENAME_X__) + +#define OSFATAL_FUNCTION_LINE(FMT, ARGS...)do { \ + OSFatal_printf("[%s]%s@L%04d: " FMT "",__FILENAME__,__FUNCTION__, __LINE__, ## ARGS); \ + } while (0) + +#define DEBUG_FUNCTION_LINE(FMT, ARGS...)do { \ + WHBLogPrintf("[%23s]%30s@L%04d: " FMT "",__FILENAME__,__FUNCTION__, __LINE__, ## ARGS); \ + } while (0); + +#define DEBUG_FUNCTION_LINE_WRITE(FMT, ARGS...)do { \ + WHBLogWritef("[%23s]%30s@L%04d: " FMT "",__FILENAME__,__FUNCTION__, __LINE__, ## ARGS); \ + } while (0); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/source/main.cpp b/source/main.cpp new file mode 100644 index 0000000..003ecca --- /dev/null +++ b/source/main.cpp @@ -0,0 +1,216 @@ +#include +#include +#include +#include +#include +#include +#include +#include "logger.h" + +WUMS_MODULE_EXPORT_NAME("homebrew_patchmemoryrelocations"); +WUMS_MODULE_INIT_BEFORE_ENTRYPOINT(); + +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) { + OSFatal("DynLoadPatcher: Failed to get gModuleData pointer."); + } + if (args.module_information->version != MODULE_INFORMATION_VERSION) { + OSFatal("DynLoadPatcher: The module information struct version does not match."); + } + + WHBLogUdpInit(); + + for (int32_t i = 0; i < gModuleData->number_used_modules; i++) { + if (strcmp("homebrew_memorymapping", gModuleData->module_data[i].module_export_name) == 0 || + strcmp("homebrew_patchmemoryrelocations", gModuleData->module_data[i].module_export_name) == 0) { + DEBUG_FUNCTION_LINE("Skip %s", gModuleData->module_data[i].module_export_name); + continue; + } + DEBUG_FUNCTION_LINE("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) { + 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) { + functionAddress = (uint32_t) &MEMAllocFromMappedMemory; + } 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) { + 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)) { + OSFatal("homebrew_patchmemoryrelocations: Relocation failed\n"); + } + } + } + } + } +} + +#define R_PPC_NONE 0 +#define R_PPC_ADDR32 1 +#define R_PPC_ADDR16_LO 4 +#define R_PPC_ADDR16_HI 5 +#define R_PPC_ADDR16_HA 6 +#define R_PPC_REL24 10 +#define R_PPC_REL14 11 +#define R_PPC_DTPMOD32 68 +#define R_PPC_DTPREL32 78 +#define R_PPC_GHS_REL16_HA 251 +#define R_PPC_GHS_REL16_HI 252 +#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) { + if (type == R_PPC_NONE) { + return true; + } + auto target = destination + offset; + auto value = symbol_addr + addend; + + auto relValue = value - static_cast(target); + + switch (type) { + case R_PPC_NONE: + break; + case R_PPC_ADDR32: + *((uint32_t *) (target)) = value; + break; + case R_PPC_ADDR16_LO: + *((uint16_t *) (target)) = static_cast(value & 0xFFFF); + break; + case R_PPC_ADDR16_HI: + *((uint16_t *) (target)) = static_cast(value >> 16); + break; + case R_PPC_ADDR16_HA: + *((uint16_t *) (target)) = static_cast((value + 0x8000) >> 16); + break; + case R_PPC_DTPMOD32: + DEBUG_FUNCTION_LINE("################IMPLEMENT ME\n"); + //*((int32_t *)(target)) = tlsModuleIndex; + break; + case R_PPC_DTPREL32: + *((uint32_t *) (target)) = value; + break; + case R_PPC_GHS_REL16_HA: + *((uint16_t *) (target)) = static_cast((relValue + 0x8000) >> 16); + break; + case R_PPC_GHS_REL16_HI: + *((uint16_t *) (target)) = static_cast(relValue >> 16); + break; + case R_PPC_GHS_REL16_LO: + *((uint16_t *) (target)) = static_cast(relValue & 0xFFFF); + break; + case R_PPC_REL14: { + auto distance = static_cast(value) - static_cast(target); + if (distance > 0x7FFC || distance < -0x7FFC) { + DEBUG_FUNCTION_LINE("***14-bit relative branch cannot hit target."); + return false; + } + + if (distance & 3) { + DEBUG_FUNCTION_LINE("***RELOC ERROR %d: lower 2 bits must be zero before shifting.", -470040); + return false; + } + + if ((distance >= 0 && (distance & 0xFFFF8000)) || + (distance < 0 && ((distance & 0xFFFF8000) != 0xFFFF8000))) { + DEBUG_FUNCTION_LINE("***RELOC ERROR %d: upper 17 bits before shift must all be the same.", -470040); + return false; + } + + *(int32_t *) target = (*(int32_t *) target & 0xFFBF0003) | (distance & 0x0000fffc); + break; + } + case R_PPC_REL24: { + // if (isWeakSymbol && !symbolValue) { + // symbolValue = static_cast(target); + // value = symbolValue + addend; + // } + auto distance = static_cast(value) - static_cast(target); + if (distance > 0x1FFFFFC || distance < -0x1FFFFFC) { + if (trampolin_data == NULL) { + 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; + 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. + // When all relocations are done successfully, they will be turned into RELOC_TRAMP_IMPORT_DONE + // so they can be overridden/updated/reused on the next application launch. + // + // Relocations that won't change will have the status RELOC_TRAMP_FIXED and are set to free when the module is unloaded. + if (trampolin_data[i].status == RELOC_TRAMP_FREE || + trampolin_data[i].status == RELOC_TRAMP_IMPORT_DONE) { + freeSlot = &(trampolin_data[i]); + break; + } + } + if (freeSlot != NULL) { + DEBUG_FUNCTION_LINE("***24-bit relative branch cannot hit target. Trampolin data list is full\n"); + DEBUG_FUNCTION_LINE("***value %08X - target %08X = distance %08X\n", value, target, distance); + return false; + } + if (target - (uint32_t) &(freeSlot->trampolin[0]) > 0x1FFFFFC) { + DEBUG_FUNCTION_LINE("**Cannot link 24-bit jump (too far to tramp buffer)."); + DEBUG_FUNCTION_LINE("***value %08X - target %08X = distance %08X\n", value, target, distance); + return false; + } + + freeSlot->trampolin[0] = 0x3D600000 | ((((uint32_t) value) >> 16) & 0x0000FFFF); // lis r11, real_addr@h + freeSlot->trampolin[1] = 0x616B0000 | (((uint32_t) value) & 0x0000ffff); // ori r11, r11, real_addr@l + freeSlot->trampolin[2] = 0x7D6903A6; // mtctr r11 + freeSlot->trampolin[3] = 0x4E800420; // bctr + DCFlushRange((void *) freeSlot->trampolin, sizeof(freeSlot->trampolin)); + ICInvalidateRange((unsigned char *) freeSlot->trampolin, sizeof(freeSlot->trampolin)); + + if (reloc_type == RELOC_TYPE_FIXED) { + freeSlot->status = RELOC_TRAMP_FIXED; + } else { + // Relocations for the imports may be overridden + freeSlot->status = RELOC_TRAMP_IMPORT_IN_PROGRESS; + } + uint32_t symbolValue = (uint32_t) &(freeSlot->trampolin[0]); + value = symbolValue + addend; + distance = static_cast(value) - static_cast(target); + DEBUG_FUNCTION_LINE("Created tramp\n"); + } + } + + if (distance & 3) { + DEBUG_FUNCTION_LINE("***RELOC ERROR %d: lower 2 bits must be zero before shifting.", -470022); + return false; + } + + if (distance < 0 && (distance & 0xFE000000) != 0xFE000000) { + DEBUG_FUNCTION_LINE("***RELOC ERROR %d: upper 7 bits before shift must all be the same (1).", -470040); + return false; + } + + if (distance >= 0 && (distance & 0xFE000000)) { + DEBUG_FUNCTION_LINE("***RELOC ERROR %d: upper 7 bits before shift must all be the same (0).", -470040); + return false; + } + + *(int32_t *) target = (*(int32_t *) target & 0xfc000003) | (distance & 0x03fffffc); + break; + } + default: + DEBUG_FUNCTION_LINE("***ERROR: Unsupported Relocation_Add Type (%08X):", type); + return false; + } + DCFlushRange((void *) target, 4); + ICInvalidateRange((void *) target, 4); + return true; +}