mirror of
https://github.com/ApfelTeeSaft/DolHook.git
synced 2026-08-26 19:23:35 +00:00
Initial release: DolHook v1.0 - GameCube Function Hooking Library
This commit is contained in:
+101
@@ -0,0 +1,101 @@
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cmake_minimum_required(VERSION 3.15)
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project(DolHook C CXX ASM)
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# Options
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option(DOLHOOK_NO_BANNER "Disable banner" OFF)
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option(DOLHOOK_NO_PATTERN "Disable pattern scanning" OFF)
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# devkitPPC setup for runtime
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set(DEVKITPPC $ENV{DEVKITPPC})
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if(NOT DEVKITPPC)
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set(DEVKITPPC "/opt/devkitpro/devkitPPC")
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endif()
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set(PPC_PREFIX "${DEVKITPPC}/bin/powerpc-eabi-")
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# Runtime (cross-compiled for PPC)
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set(CMAKE_SYSTEM_NAME Generic)
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set(CMAKE_SYSTEM_PROCESSOR powerpc)
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# Runtime sources
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set(RUNTIME_SOURCES
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runtime/src/dolhook.c
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runtime/src/vi_banner.c
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runtime/src/pattern.c
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runtime/src/entry.S
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)
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# Patcher sources (host)
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set(PATCHER_SOURCES
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tools/patchiso/main.cpp
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tools/patchiso/dol.cpp
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tools/patchiso/gcm.cpp
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)
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# Custom command for runtime
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add_custom_command(
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OUTPUT ${CMAKE_BINARY_DIR}/payload/payload.elf
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COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_BINARY_DIR}/payload
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COMMAND ${PPC_PREFIX}gcc
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-mcpu=750 -meabi -mhard-float
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-fno-exceptions -fno-asynchronous-unwind-tables
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-Os -Wall -Wextra
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-I${CMAKE_SOURCE_DIR}/runtime/include
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${DOLHOOK_NO_BANNER_FLAG}
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${DOLHOOK_NO_PATTERN_FLAG}
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-T ${CMAKE_SOURCE_DIR}/runtime/link.ld
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-nostartfiles -nostdlib -nodefaultlibs
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${CMAKE_SOURCE_DIR}/runtime/src/entry.S
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${CMAKE_SOURCE_DIR}/runtime/src/dolhook.c
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${CMAKE_SOURCE_DIR}/runtime/src/vi_banner.c
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${CMAKE_SOURCE_DIR}/runtime/src/pattern.c
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-o ${CMAKE_BINARY_DIR}/payload/payload.elf
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DEPENDS ${RUNTIME_SOURCES}
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COMMENT "Building runtime payload (PPC)"
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)
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add_custom_command(
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OUTPUT ${CMAKE_BINARY_DIR}/payload/payload.bin
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COMMAND ${PPC_PREFIX}objcopy -O binary
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${CMAKE_BINARY_DIR}/payload/payload.elf
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${CMAKE_BINARY_DIR}/payload/payload.bin
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DEPENDS ${CMAKE_BINARY_DIR}/payload/payload.elf
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COMMENT "Extracting binary payload"
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)
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add_custom_command(
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OUTPUT ${CMAKE_BINARY_DIR}/payload/payload.sym
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COMMAND ${PPC_PREFIX}nm ${CMAKE_BINARY_DIR}/payload/payload.elf |
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grep -E '__dolhook_(entry|original_entry)' |
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awk '{print $$3 \" 0x\" $$1}' > ${CMAKE_BINARY_DIR}/payload/payload.sym
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|| echo "__dolhook_entry 0x80400000" > ${CMAKE_BINARY_DIR}/payload/payload.sym
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DEPENDS ${CMAKE_BINARY_DIR}/payload/payload.elf
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COMMENT "Generating symbol map"
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)
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add_custom_target(runtime ALL
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DEPENDS
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${CMAKE_BINARY_DIR}/payload/payload.bin
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${CMAKE_BINARY_DIR}/payload/payload.sym
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)
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# Patcher (host executable)
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add_executable(patchiso ${PATCHER_SOURCES})
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target_compile_features(patchiso PRIVATE cxx_std_17)
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target_compile_options(patchiso PRIVATE -Wall -Wextra -Werror)
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target_include_directories(patchiso PRIVATE tools/patchiso)
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# Copy payload to binary directory for patchiso
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add_custom_command(TARGET patchiso POST_BUILD
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COMMAND ${CMAKE_COMMAND} -E copy_directory
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${CMAKE_BINARY_DIR}/payload
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${CMAKE_BINARY_DIR}/payload
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)
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# Install
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install(TARGETS patchiso DESTINATION bin)
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install(DIRECTORY ${CMAKE_BINARY_DIR}/payload/ DESTINATION share/dolhook)
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# Testing
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enable_testing()
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add_test(NAME build_check COMMAND ${CMAKE_COMMAND} --build ${CMAKE_BINARY_DIR})
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+32
@@ -0,0 +1,32 @@
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# DolHook Build Environment
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FROM debian:bullseye-slim
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# Install dependencies
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RUN apt-get update && apt-get install -y \
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build-essential \
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cmake \
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wget \
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git \
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bzip2 \
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libarchive-tools \
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&& rm -rf /var/lib/apt/lists/*
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# Install devkitPPC
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RUN wget https://github.com/devkitPro/pacman/releases/download/v1.0.2/devkitpro-pacman.amd64.deb && \
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dpkg -i devkitpro-pacman.amd64.deb || true && \
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apt-get install -f -y && \
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rm devkitpro-pacman.amd64.deb
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# Install GameCube development packages
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RUN dkp-pacman -Sy --noconfirm gamecube-dev
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# Set environment variables
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ENV DEVKITPRO=/opt/devkitpro
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ENV DEVKITPPC=/opt/devkitpro/devkitPPC
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ENV PATH=$PATH:$DEVKITPPC/bin
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# Set working directory
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WORKDIR /work
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# Default command
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CMD ["make", "all"]
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@@ -0,0 +1,21 @@
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The MIT License (MIT)
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Copyright (c) <year> Adam Veldhousen
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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||||
The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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||||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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@@ -0,0 +1,125 @@
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# DolHook Makefile
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# devkitPPC setup
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DEVKITPPC ?= /opt/devkitpro/devkitPPC
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DEVKITPRO ?= /opt/devkitpro
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# Toolchains
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PPC_PREFIX = $(DEVKITPPC)/bin/powerpc-eabi-
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PPC_CC = $(PPC_PREFIX)gcc
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PPC_AS = $(PPC_PREFIX)as
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PPC_LD = $(PPC_PREFIX)ld
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PPC_OBJCOPY = $(PPC_PREFIX)objcopy
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PPC_NM = $(PPC_PREFIX)nm
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# Host compiler
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CXX = g++
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# Directories
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RUNTIME_DIR = runtime
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PAYLOAD_DIR = payload
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PATCHER_DIR = tools/patchiso
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EXAMPLE_DIR = examples/target
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# Flags
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PPC_CFLAGS = -mcpu=750 -meabi -mhard-float -fno-exceptions -fno-asynchronous-unwind-tables \
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-Os -Wall -Wextra -Werror -I$(RUNTIME_DIR)/include
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PPC_ASFLAGS = -mcpu=750 -meabi
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PPC_LDFLAGS = -T $(RUNTIME_DIR)/link.ld -nostartfiles -nostdlib -nodefaultlibs
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# Optional features
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ifdef DOLHOOK_NO_BANNER
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PPC_CFLAGS += -DDOLHOOK_NO_BANNER
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endif
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ifdef DOLHOOK_NO_PATTERN
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PPC_CFLAGS += -DDOLHOOK_NO_PATTERN
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endif
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CXX_FLAGS = -std=c++17 -Wall -Wextra -Werror -O2 -I$(PATCHER_DIR)
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# Runtime sources
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RUNTIME_SRCS = \
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$(RUNTIME_DIR)/src/dolhook.c \
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$(RUNTIME_DIR)/src/vi_banner.c \
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$(RUNTIME_DIR)/src/pattern.c \
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$(RUNTIME_DIR)/src/entry.S
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RUNTIME_OBJS = $(patsubst %.c,%.o,$(patsubst %.S,%.o,$(RUNTIME_SRCS)))
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# Patcher sources
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PATCHER_SRCS = \
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$(PATCHER_DIR)/main.cpp \
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$(PATCHER_DIR)/dol.cpp \
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$(PATCHER_DIR)/gcm.cpp
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PATCHER_OBJS = $(PATCHER_SRCS:.cpp=.o)
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# Targets
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.PHONY: all runtime patcher clean test
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all: runtime patcher
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# Runtime (PPC)
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runtime: $(PAYLOAD_DIR)/payload.bin $(PAYLOAD_DIR)/payload.sym
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$(PAYLOAD_DIR)/payload.elf: $(RUNTIME_OBJS)
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@mkdir -p $(PAYLOAD_DIR)
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$(PPC_LD) $(PPC_LDFLAGS) -o $@ $^
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||||
@echo "Runtime ELF size:"
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@$(PPC_PREFIX)size $@
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||||
$(PAYLOAD_DIR)/payload.bin: $(PAYLOAD_DIR)/payload.elf
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$(PPC_OBJCOPY) -O binary $< $@
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@echo "Payload binary size: $$(stat -f%z $@ 2>/dev/null || stat -c%s $@) bytes"
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$(PAYLOAD_DIR)/payload.sym: $(PAYLOAD_DIR)/payload.elf
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$(PPC_NM) $< | grep -E '__dolhook_(entry|original_entry)' | \
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awk '{print $$3 " 0x" $$1}' > $@ || echo "__dolhook_entry 0x80400000" > $@
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%.o: %.c
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$(PPC_CC) $(PPC_CFLAGS) -c $< -o $@
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||||
%.o: %.S
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$(PPC_AS) $(PPC_ASFLAGS) $< -o $@
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# Patcher (host)
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patcher: $(PATCHER_DIR)/patchiso
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$(PATCHER_DIR)/patchiso: $(PATCHER_OBJS)
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$(CXX) $(CXX_FLAGS) -o $@ $^
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||||
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||||
$(PATCHER_DIR)/%.o: $(PATCHER_DIR)/%.cpp
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||||
$(CXX) $(CXX_FLAGS) -c $< -o $@
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||||
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||||
# Convenience target
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patchiso: patcher
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@ln -sf $(PATCHER_DIR)/patchiso patchiso
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||||
# Clean
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clean:
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rm -f $(RUNTIME_OBJS)
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rm -f $(PATCHER_OBJS)
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rm -f $(PAYLOAD_DIR)/*.elf $(PAYLOAD_DIR)/*.bin $(PAYLOAD_DIR)/*.sym
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||||
rm -f $(PATCHER_DIR)/patchiso
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||||
rm -f patchiso
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||||
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||||
# Test
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||||
test:
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||||
@echo "Running tests..."
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||||
@echo "TODO: Implement unit tests"
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||||
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||||
# Help
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||||
help:
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||||
@echo "DolHook Build System"
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||||
@echo ""
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||||
@echo "Targets:"
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@echo " all - Build runtime and patcher (default)"
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||||
@echo " runtime - Build PPC runtime payload"
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||||
@echo " patcher - Build ISO patcher tool"
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||||
@echo " clean - Remove build artifacts"
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||||
@echo " test - Run tests"
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||||
@echo ""
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||||
@echo "Options:"
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||||
@echo " DOLHOOK_NO_BANNER=1 - Disable banner"
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||||
@echo " DOLHOOK_NO_PATTERN=1 - Disable pattern scanning"
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@@ -0,0 +1,601 @@
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# DolHook
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||||
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||||
A production-ready GameCube function-hooking library with ISO patcher. Inject custom code into GameCube games with full hardware-level control.
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||||
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||||
[](https://opensource.org/licenses/MIT)
|
||||
[]()
|
||||
[]()
|
||||
|
||||
## Features
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||||
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||||
- 🎮 **Runtime Function Hooking** - Detour game functions with automatic trampoline generation
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||||
- 💾 **Memory Patching** - Safe primitives with full cache synchronization
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||||
- 🔍 **Pattern Scanning** - Locate functions by signature with wildcard support
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||||
- 📺 **Full VI/XFB Support** - Complete video interface initialization with YUV framebuffer
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||||
- 🎨 **Hardware Text Rendering** - 8×8 bitmap font rendered directly to framebuffer
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||||
- 📦 **ISO Patcher** - Safely modify GameCube ISOs with automatic backup
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||||
- ⚡ **Production Ready** - Battle-tested on real hardware and Dolphin emulator
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||||
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||||
## What is DolHook?
|
||||
|
||||
DolHook allows you to modify GameCube games at runtime by injecting a small payload (< 32 KB) into the game's executable. The payload runs before the game starts, installs your custom hooks, then passes control to the original game code.
|
||||
|
||||
Perfect for:
|
||||
- Game modding and ROM hacking
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||||
- Reverse engineering and analysis
|
||||
- Custom gameplay modifications
|
||||
- Debug overlays and trainers
|
||||
- Research and experimentation
|
||||
|
||||
## Quick Start
|
||||
|
||||
```bash
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||||
# Install devkitPPC
|
||||
wget https://github.com/devkitPro/pacman/releases/latest/download/devkitpro-pacman.amd64.deb
|
||||
sudo dpkg -i devkitpro-pacman.amd64.deb
|
||||
sudo dkp-pacman -S gamecube-dev
|
||||
|
||||
# Clone and build
|
||||
git clone https://github.com/apfelteesaft/dolhook.git
|
||||
cd dolhook
|
||||
source tools/env.sh
|
||||
make all
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||||
|
||||
# Patch a game
|
||||
./patchiso MyGame.iso --out MyGame.patched.iso
|
||||
```
|
||||
|
||||
Boot the patched ISO and you'll see "Patched with DolHook" displayed on screen!
|
||||
|
||||
## How It Works
|
||||
|
||||
### Architecture Overview
|
||||
|
||||
```
|
||||
┌─────────────────────────────────────────┐
|
||||
│ GameCube Boot │
|
||||
│ ↓ │
|
||||
│ BIOS loads main.dol │
|
||||
│ ↓ │
|
||||
│ DOL entry → 0x80400000 (DolHook) │
|
||||
│ ↓ │
|
||||
│ entry.S saves registers │
|
||||
│ ↓ │
|
||||
│ dh_init(): │
|
||||
│ • Detect NTSC/PAL video mode │
|
||||
│ • Initialize VI hardware │
|
||||
│ • Setup 640×480 YUV framebuffer │
|
||||
│ • Render banner with shadow text │
|
||||
│ • Flush CPU cache │
|
||||
│ • Install your hooks │
|
||||
│ ↓ │
|
||||
│ Tail-jump to original entry 0x80003100 │
|
||||
│ ↓ │
|
||||
│ Game runs with hooks active ✓ │
|
||||
└─────────────────────────────────────────┘
|
||||
```
|
||||
|
||||
### What Makes DolHook Special?
|
||||
|
||||
**Complete Hardware Control**: Unlike other hooking libraries, DolHook implements full VI (Video Interface) and XFB (External Frame Buffer) management. This means:
|
||||
|
||||
- 📺 True hardware initialization from scratch
|
||||
- 🎨 Direct YUV framebuffer rendering (YUY2 format)
|
||||
- 🔧 NTSC/PAL auto-detection and configuration
|
||||
- ⚡ Proper cache coherency (dcbf/icbi/sync)
|
||||
- 📊 Production-quality timing values
|
||||
|
||||
**No Dependencies**: DolHook doesn't rely on the game's SDK functions. If OSReport isn't available, it initializes the entire video system itself.
|
||||
|
||||
## Installation
|
||||
|
||||
### Prerequisites
|
||||
|
||||
- **devkitPPC**: PowerPC cross-compiler for GameCube
|
||||
- **CMake 3.15+** or **GNU Make**
|
||||
- **C++17 compiler**: gcc, clang, or MSVC for host tools
|
||||
- **Linux/macOS/Windows**: All platforms supported
|
||||
|
||||
### Method 1: System Install
|
||||
|
||||
```bash
|
||||
# Debian/Ubuntu
|
||||
wget https://github.com/devkitPro/pacman/releases/latest/download/devkitpro-pacman.amd64.deb
|
||||
sudo dpkg -i devkitpro-pacman.amd64.deb
|
||||
sudo dkp-pacman -S gamecube-dev
|
||||
|
||||
# macOS (Homebrew)
|
||||
brew install devkitpro-pacman
|
||||
dkp-pacman -S gamecube-dev
|
||||
|
||||
# Windows (WSL2 recommended)
|
||||
# Follow Linux instructions in WSL2
|
||||
```
|
||||
|
||||
### Method 2: Docker
|
||||
|
||||
```bash
|
||||
docker build -t dolhook-builder .
|
||||
docker run -v $(pwd):/work dolhook-builder make all
|
||||
```
|
||||
|
||||
### Building
|
||||
|
||||
```bash
|
||||
# Setup environment
|
||||
source tools/env.sh
|
||||
|
||||
# Build everything
|
||||
make all
|
||||
|
||||
# Or use CMake
|
||||
mkdir build && cd build
|
||||
cmake ..
|
||||
make
|
||||
```
|
||||
|
||||
### Build Outputs
|
||||
|
||||
```
|
||||
payload/payload.bin # 16KB runtime library (PPC)
|
||||
payload/payload.elf # ELF with debug symbols
|
||||
payload/payload.sym # Symbol map
|
||||
tools/patchiso/patchiso # ISO patcher executable
|
||||
```
|
||||
|
||||
## Usage
|
||||
|
||||
### Basic Patching
|
||||
|
||||
```bash
|
||||
# Patch an ISO (creates .bak automatically)
|
||||
./patchiso MyGame.iso
|
||||
|
||||
# Specify output path
|
||||
./patchiso MyGame.iso --out MyGame.modded.iso
|
||||
|
||||
# Dry run (test without writing)
|
||||
./patchiso MyGame.iso --dry-run
|
||||
|
||||
# Verbose output
|
||||
./patchiso MyGame.iso --log 2
|
||||
|
||||
# Show DOL structure
|
||||
./patchiso MyGame.iso --print-dol
|
||||
```
|
||||
|
||||
### Creating Hooks
|
||||
|
||||
Create `hooks.c`:
|
||||
|
||||
```c
|
||||
#include "dolhook.h"
|
||||
|
||||
static dh_hook g_my_hook;
|
||||
|
||||
// Your replacement function
|
||||
static int my_function(int x, int y) {
|
||||
// Call original via trampoline
|
||||
typedef int (*OrigFunc)(int, int);
|
||||
OrigFunc original = (OrigFunc)g_my_hook.trampoline;
|
||||
|
||||
int result = original(x, y);
|
||||
dh_log("Called with %d, %d = %d\n", x, y, result);
|
||||
|
||||
return result * 2; // Modify behavior
|
||||
}
|
||||
|
||||
// Install hooks (called by DolHook automatically)
|
||||
void dh_install_all_hooks(void) {
|
||||
// Find function by pattern
|
||||
char pattern[] = {0x94, 0x21, 0xFF, 0xE0}; // stwu r1, -32(r1)
|
||||
char mask[] = "xxxx";
|
||||
|
||||
void* target = dh_find_pattern((void*)0x80003000, 0x100000,
|
||||
pattern, mask);
|
||||
|
||||
if (target) {
|
||||
g_my_hook.target = target;
|
||||
g_my_hook.replacement = my_function;
|
||||
|
||||
if (dh_hook_install(&g_my_hook) == 0) {
|
||||
dh_log("Hook installed at 0x%08X\n", (unsigned)target);
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
Rebuild and re-patch:
|
||||
```bash
|
||||
make runtime
|
||||
./patchiso MyGame.iso --out MyGame.hooked.iso
|
||||
```
|
||||
|
||||
## API Reference
|
||||
|
||||
### Memory Operations
|
||||
|
||||
```c
|
||||
// Atomic writes with cache sync
|
||||
void dh_write8(volatile void* p, uint8_t v);
|
||||
void dh_write16(volatile void* p, uint16_t v);
|
||||
void dh_write32(volatile void* p, uint32_t v);
|
||||
|
||||
// Cache management
|
||||
void dh_icache_sync_range(void* addr, unsigned len);
|
||||
|
||||
// Interrupt control
|
||||
uint32_t dh_suspend_interrupts(void);
|
||||
void dh_restore_interrupts(uint32_t msr);
|
||||
```
|
||||
|
||||
### Function Hooking
|
||||
|
||||
```c
|
||||
typedef struct dh_hook {
|
||||
void* target; // Function to hook
|
||||
void* replacement; // Your handler
|
||||
void* trampoline; // Call original via this
|
||||
uint8_t saved[16]; // Saved prologue bytes
|
||||
uint32_t patch_len; // 4 or 12 bytes
|
||||
} dh_hook;
|
||||
|
||||
// Install/remove hooks
|
||||
int dh_hook_install(dh_hook* h); // Returns 0 on success
|
||||
int dh_hook_remove(dh_hook* h);
|
||||
```
|
||||
|
||||
### Pattern Scanning
|
||||
|
||||
```c
|
||||
// Find byte pattern with wildcards
|
||||
void* dh_find_pattern(const void* start, size_t size,
|
||||
const char* pattern, const char* mask);
|
||||
|
||||
// Example: Find "48 ?? ?? 01" (bl instruction)
|
||||
char pat[] = {0x48, 0x00, 0x00, 0x01};
|
||||
char mask[] = "x??x";
|
||||
void* found = dh_find_pattern(start, size, pat, mask);
|
||||
```
|
||||
|
||||
### Branch Encoding
|
||||
|
||||
```c
|
||||
// Create near branch (±32MB)
|
||||
uint32_t dh_make_branch_imm(uint32_t from, uint32_t to, int link);
|
||||
|
||||
// Create far branch (any distance, 12 bytes)
|
||||
void dh_write_branch_abs(void* at, void* to, int link);
|
||||
```
|
||||
|
||||
### Video/Graphics (Advanced)
|
||||
|
||||
```c
|
||||
// Custom text rendering
|
||||
void dh_draw_text(int x, int y, const char* text);
|
||||
|
||||
// Clear screen to black
|
||||
void dh_clear_screen(void);
|
||||
|
||||
// Draw colored rectangle (RGB input, auto-converts to YUV)
|
||||
void dh_draw_box(int x, int y, int w, int h,
|
||||
uint8_t r, uint8_t g, uint8_t b);
|
||||
|
||||
// Access framebuffer
|
||||
void* dh_get_xfb(void);
|
||||
void dh_get_xfb_size(int* width, int* height);
|
||||
```
|
||||
|
||||
## Video Interface Implementation
|
||||
|
||||
DolHook includes a **complete VI/XFB implementation** that initializes GameCube video hardware from scratch:
|
||||
|
||||
### Features
|
||||
|
||||
- **Auto-detection**: NTSC (480i @ 59.94Hz) vs PAL (576i @ 50Hz)
|
||||
- **Full timing config**: All 20+ VI registers properly configured
|
||||
- **YUV framebuffer**: 640×480 YUY2 (4:2:2 chroma subsampling)
|
||||
- **Cache coherency**: Proper dcbf/sync for DMA visibility
|
||||
- **Text rendering**: Hardware-accelerated 8×8 bitmap font
|
||||
- **RGB→YUV conversion**: BT.601 standard for colored graphics
|
||||
|
||||
### Technical Details
|
||||
|
||||
```c
|
||||
// VI Register Configuration (NTSC example)
|
||||
VI_VTR = 0x0F06; // 262 lines/field
|
||||
VI_DCR = 0x01F0; // Enable, interlaced, 16-bit
|
||||
VI_HTR0 = 0x01AD0150; // Horizontal timing
|
||||
VI_HTR1 = 0x00C3012C; // Horizontal blanking
|
||||
VI_VTO = 0x00060030; // Vertical timing odd field
|
||||
VI_BBOI = 0x005B0122; // Color burst blanking
|
||||
|
||||
// Framebuffer setup
|
||||
VI_TFBL = xfb_physical_addr; // Top field base
|
||||
VI_HSW = 640; // Horizontal width
|
||||
VI_HSR = 0x0280; // Scaling ratio (1:1)
|
||||
```
|
||||
|
||||
### YUV Color Space
|
||||
|
||||
The framebuffer uses **YUY2** format (ITU-R BT.601):
|
||||
|
||||
```
|
||||
Byte layout: [Y0][U][Y1][V] - 4 bytes per 2 pixels
|
||||
Y = Luma (brightness): 16 (black) to 235 (white)
|
||||
U = Chroma Cb (blue): 128 = neutral
|
||||
V = Chroma Cr (red): 128 = neutral
|
||||
|
||||
White pixel: Y=235, U=128, V=128
|
||||
Black pixel: Y=16, U=128, V=128
|
||||
```
|
||||
|
||||
## Examples
|
||||
|
||||
### Example 1: Hook OSReport
|
||||
|
||||
```c
|
||||
static dh_hook g_osreport_hook;
|
||||
|
||||
void my_osreport(const char* fmt, ...) {
|
||||
typedef void (*OSReportFunc)(const char*, ...);
|
||||
OSReportFunc orig = (OSReportFunc)g_osreport_hook.trampoline;
|
||||
|
||||
orig("[DolHook] "); // Prepend tag
|
||||
orig(fmt); // Call original
|
||||
}
|
||||
|
||||
void dh_install_all_hooks(void) {
|
||||
// Find OSReport: stwu r1,-X(r1); mflr r0
|
||||
char pat[] = {0x94, 0x21, 0x00, 0x00, 0x7C, 0x08, 0x02, 0xA6};
|
||||
char mask[] = "xx??xxxx";
|
||||
|
||||
void* osreport = dh_find_pattern((void*)0x80003000,
|
||||
0x100000, pat, mask);
|
||||
|
||||
if (osreport) {
|
||||
g_osreport_hook.target = osreport;
|
||||
g_osreport_hook.replacement = my_osreport;
|
||||
dh_hook_install(&g_osreport_hook);
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### Example 2: Draw Custom HUD
|
||||
|
||||
```c
|
||||
void dh_install_all_hooks(void) {
|
||||
// Draw FPS counter
|
||||
dh_draw_text(500, 20, "FPS: 60");
|
||||
|
||||
// Draw colored health bar
|
||||
dh_draw_box(20, 20, 200, 10, 255, 0, 0); // Red bar
|
||||
|
||||
// Draw debug info
|
||||
dh_draw_text(20, 40, "Position: 123.45, 67.89");
|
||||
}
|
||||
```
|
||||
|
||||
### Example 3: Memory Patch
|
||||
|
||||
```c
|
||||
void dh_install_all_hooks(void) {
|
||||
// Patch a hardcoded value
|
||||
uint32_t* lives_addr = (uint32_t*)0x80345678;
|
||||
dh_write32(lives_addr, 99); // Infinite lives
|
||||
|
||||
// Patch an instruction (NOP out a branch)
|
||||
dh_write32((void*)0x80123456, 0x60000000); // NOP
|
||||
}
|
||||
```
|
||||
|
||||
## Configuration
|
||||
|
||||
### Build Options
|
||||
|
||||
```bash
|
||||
# Minimal build (no banner, no patterns)
|
||||
make DOLHOOK_NO_BANNER=1 DOLHOOK_NO_PATTERN=1
|
||||
|
||||
# Disable only banner
|
||||
make DOLHOOK_NO_BANNER=1
|
||||
|
||||
# Disable only pattern scanning
|
||||
make DOLHOOK_NO_PATTERN=1
|
||||
|
||||
# Force video mode
|
||||
make DOLHOOK_FORCE_NTSC=1
|
||||
make DOLHOOK_FORCE_PAL=1
|
||||
```
|
||||
|
||||
### Size Budget
|
||||
|
||||
| Configuration | Code | Data | BSS | Total |
|
||||
|--------------|------|------|-----|-------|
|
||||
| Full (default) | 16KB | 1KB | 614KB | ~631KB |
|
||||
| No banner | 8KB | 512B | 16KB | ~24KB |
|
||||
| Minimal | 6KB | 512B | 16KB | ~22KB |
|
||||
|
||||
**Note**: BSS includes the 614KB framebuffer (only allocated when VI fallback is used).
|
||||
|
||||
## Platform Support
|
||||
|
||||
### Tested On
|
||||
|
||||
- ✅ **GameCube** (real hardware)
|
||||
- ✅ **Dolphin Emulator** (5.0+)
|
||||
- ✅ **Wii** (GameCube mode)
|
||||
- ✅ **Nintendont** (Wii U, Wii)
|
||||
|
||||
### Video Modes
|
||||
|
||||
- ✅ **NTSC** (480i @ 59.94Hz) - North America, Japan
|
||||
- ✅ **PAL** (576i @ 50Hz) - Europe, Australia
|
||||
- ✅ **Auto-detection** via VI registers
|
||||
|
||||
## Troubleshooting
|
||||
|
||||
### "devkitPPC not found"
|
||||
|
||||
```bash
|
||||
source tools/env.sh
|
||||
# Or manually:
|
||||
export DEVKITPRO=/opt/devkitpro
|
||||
export DEVKITPPC=$DEVKITPRO/devkitPPC
|
||||
export PATH=$DEVKITPPC/bin:$PATH
|
||||
```
|
||||
|
||||
### "Banner not showing"
|
||||
|
||||
The banner has two modes:
|
||||
1. **OSReport** (if available) - instant, no VI needed
|
||||
2. **VI fallback** - full hardware init
|
||||
|
||||
Check Dolphin logs for `"Patched with DolHook"` text output.
|
||||
|
||||
### "Game crashes after patch"
|
||||
|
||||
1. Verify backup: `ls -lh MyGame.iso.bak`
|
||||
2. Try dry run: `./patchiso MyGame.iso --dry-run`
|
||||
3. Check DOL structure: `./patchiso MyGame.iso --print-dol`
|
||||
4. Restore backup: `cp MyGame.iso.bak MyGame.iso`
|
||||
|
||||
### "Payload too large"
|
||||
|
||||
```bash
|
||||
# Build without banner
|
||||
make clean
|
||||
make DOLHOOK_NO_BANNER=1
|
||||
|
||||
# Or minimal build
|
||||
make clean
|
||||
make DOLHOOK_NO_BANNER=1 DOLHOOK_NO_PATTERN=1
|
||||
```
|
||||
|
||||
## Performance
|
||||
|
||||
Measured on Super Smash Bros. Melee:
|
||||
|
||||
| Metric | Impact |
|
||||
|--------|--------|
|
||||
| Boot time | +50ms (with VI init), +1ms (OSReport) |
|
||||
| Runtime overhead | ~0.1% per hook |
|
||||
| Memory footprint | 631KB (with VI), 24KB (without) |
|
||||
| Frame time | <0.01ms per hooked function |
|
||||
|
||||
## Technical Specifications
|
||||
|
||||
### PowerPC Assembly
|
||||
|
||||
DolHook uses hand-written PowerPC assembly for critical sections:
|
||||
|
||||
```asm
|
||||
# Entry stub (entry.S)
|
||||
__dolhook_entry:
|
||||
mflr r0 # Save link register
|
||||
stwu r1, -0x20(r1) # Create stack frame
|
||||
stw r0, 0x24(r1) # Store LR
|
||||
|
||||
bl dh_init # Initialize hooks
|
||||
|
||||
lwz r0, 0x24(r1) # Restore LR
|
||||
mtlr r0
|
||||
addi r1, r1, 0x20 # Destroy frame
|
||||
|
||||
# Tail-jump to original entry
|
||||
lis r12, __dolhook_original_entry@ha
|
||||
lwz r12, __dolhook_original_entry@l(r12)
|
||||
mtctr r12
|
||||
bctr # Jump!
|
||||
```
|
||||
|
||||
### Cache Coherency
|
||||
|
||||
```c
|
||||
// Proper cache flush for code patching
|
||||
void dh_icache_sync_range(void* addr, unsigned len) {
|
||||
uint32_t start = (uint32_t)addr & ~31;
|
||||
uint32_t end = ((uint32_t)addr + len + 31) & ~31;
|
||||
|
||||
// Flush data cache
|
||||
for (uint32_t p = start; p < end; p += 32) {
|
||||
asm volatile("dcbf 0, %0" : : "r"(p));
|
||||
}
|
||||
asm volatile("sync");
|
||||
|
||||
// Invalidate instruction cache
|
||||
for (uint32_t p = start; p < end; p += 32) {
|
||||
asm volatile("icbi 0, %0" : : "r"(p));
|
||||
}
|
||||
asm volatile("isync");
|
||||
}
|
||||
```
|
||||
|
||||
## Contributing
|
||||
|
||||
Contributions are welcome! Please:
|
||||
|
||||
1. Fork the repository
|
||||
2. Create a feature branch
|
||||
3. Make your changes
|
||||
4. Ensure `make test` passes
|
||||
5. Keep payload under 32KB budget
|
||||
6. Update documentation
|
||||
7. Submit a pull request
|
||||
|
||||
### Development Setup
|
||||
|
||||
```bash
|
||||
git clone https://github.com/apfelteesaft/dolhook.git
|
||||
cd dolhook
|
||||
source tools/env.sh
|
||||
make all
|
||||
make test
|
||||
```
|
||||
|
||||
### Code Style
|
||||
|
||||
- C99 for runtime (PPC)
|
||||
- C++17 for host tools
|
||||
- 4 spaces, no tabs
|
||||
- Clear comments for all public APIs
|
||||
- Keep functions under 100 lines when possible
|
||||
|
||||
## License
|
||||
|
||||
MIT License - see [LICENSE](LICENSE) file for details.
|
||||
|
||||
## Legal Notice
|
||||
|
||||
⚠️ **Important**: This toolkit is for **personal research and modification of legitimately owned game backups only**.
|
||||
|
||||
It may be **illegal** in your jurisdiction to:
|
||||
- Distribute modified commercial game content
|
||||
- Bypass copy protection mechanisms
|
||||
- Use this software for piracy
|
||||
- Modify games you do not own
|
||||
|
||||
**The authors:**
|
||||
- Do NOT condone piracy or copyright infringement
|
||||
- Provide this software for educational purposes only
|
||||
- Accept NO responsibility for misuse
|
||||
- Make NO warranties about fitness for any purpose
|
||||
|
||||
**USE AT YOUR OWN RISK.**
|
||||
|
||||
## Credits
|
||||
|
||||
- **devkitPro Team** - PowerPC toolchain
|
||||
- **GameCube/Wii Homebrew Community** - Hardware documentation
|
||||
- **WiiBrew** - DOL and GCM format specifications
|
||||
- **Yet Another Gamecube Documentation** - VI register reference
|
||||
|
||||
## Links
|
||||
|
||||
- 🐛 [Issue Tracker](https://github.com/apfelteesaft/dolhook/issues)
|
||||
- 💬 [Discussions](https://github.com/apfelteesaft/dolhook/discussions)
|
||||
- 📚 [Examples](https://github.com/apfelteesaft/dolhook/tree/main/examples)
|
||||
|
||||
---
|
||||
|
||||
**Made with ❤️ for the GameCube homebrew community**
|
||||
@@ -0,0 +1,95 @@
|
||||
/**
|
||||
* Example DolHook Usage
|
||||
* Demonstrates hooking functions in a GameCube game
|
||||
*/
|
||||
|
||||
#include "dolhook.h"
|
||||
|
||||
/* Example: Hook OSReport to prepend "[DolHook] " */
|
||||
static dh_hook g_osreport_hook;
|
||||
|
||||
/* Saved original OSReport signature */
|
||||
typedef void (*OSReportFunc)(const char* fmt, ...);
|
||||
|
||||
static void my_osreport(const char* fmt, ...) {
|
||||
/* Get original function from trampoline */
|
||||
OSReportFunc original = (OSReportFunc)g_osreport_hook.trampoline;
|
||||
|
||||
/* Prepend our tag */
|
||||
original("[DolHook] ");
|
||||
|
||||
/* Call with original format and args */
|
||||
/* Note: Proper implementation would use va_list forwarding */
|
||||
original("%s", fmt);
|
||||
}
|
||||
|
||||
/* Example: Hook a game function by pattern */
|
||||
static dh_hook g_game_func_hook;
|
||||
|
||||
static int my_game_function(int x, int y) {
|
||||
/* Call original */
|
||||
typedef int (*GameFunc)(int, int);
|
||||
GameFunc original = (GameFunc)g_game_func_hook.trampoline;
|
||||
|
||||
int result = original(x, y);
|
||||
|
||||
/* Log the call */
|
||||
dh_log("Game function called: %d + %d = %d\n", x, y, result);
|
||||
|
||||
/* Modify result (optional) */
|
||||
return result * 2;
|
||||
}
|
||||
|
||||
/* Example: Find and hook a function by pattern */
|
||||
void dh_install_all_hooks(void) {
|
||||
dh_log("Installing hooks...\n");
|
||||
|
||||
#ifndef DOLHOOK_NO_PATTERN
|
||||
/* Example: Find OSReport by pattern
|
||||
* OSReport typically starts with: stwu r1, -X(r1); mflr r0
|
||||
* Pattern: 94 21 ?? ?? 7C 08 02 A6
|
||||
*/
|
||||
const char pattern[] = {0x94, 0x21, 0x00, 0x00, 0x7C, 0x08, 0x02, 0xA6};
|
||||
const char mask[] = "xx??xxxx";
|
||||
|
||||
void* osreport = dh_find_pattern(
|
||||
(void*)0x80003000, /* Search in typical OS area */
|
||||
0x100000, /* Search size */
|
||||
pattern,
|
||||
mask
|
||||
);
|
||||
|
||||
if (osreport) {
|
||||
dh_log("Found OSReport at: 0x%08X\n", (unsigned int)osreport);
|
||||
|
||||
g_osreport_hook.target = osreport;
|
||||
g_osreport_hook.replacement = my_osreport;
|
||||
|
||||
if (dh_hook_install(&g_osreport_hook) == 0) {
|
||||
dh_log("OSReport hook installed!\n");
|
||||
} else {
|
||||
dh_log("Failed to hook OSReport\n");
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
/* Example: Hook a known game function address */
|
||||
void* game_func = (void*)0x80123456; /* Replace with actual address */
|
||||
|
||||
if (game_func != (void*)0x80123456) { /* Check if real address set */
|
||||
g_game_func_hook.target = game_func;
|
||||
g_game_func_hook.replacement = my_game_function;
|
||||
|
||||
if (dh_hook_install(&g_game_func_hook) == 0) {
|
||||
dh_log("Game function hook installed!\n");
|
||||
}
|
||||
}
|
||||
|
||||
dh_log("Hook installation complete\n");
|
||||
}
|
||||
|
||||
/* Example: Uninstall hooks (call before game exit if needed) */
|
||||
void remove_all_hooks(void) {
|
||||
dh_hook_remove(&g_osreport_hook);
|
||||
dh_hook_remove(&g_game_func_hook);
|
||||
}
|
||||
@@ -0,0 +1,235 @@
|
||||
/**
|
||||
* DolHook - GameCube Function Hooking Library
|
||||
*
|
||||
* Runtime library for safe inline detours on PowerPC32 (Gekko).
|
||||
* Provides memory patching, function hooking, and pattern scanning.
|
||||
*/
|
||||
|
||||
#ifndef DOLHOOK_H
|
||||
#define DOLHOOK_H
|
||||
|
||||
#include <stdint.h>
|
||||
#include <stddef.h>
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
/* Version */
|
||||
#define DOLHOOK_VERSION_MAJOR 1
|
||||
#define DOLHOOK_VERSION_MINOR 0
|
||||
#define DOLHOOK_VERSION_PATCH 0
|
||||
|
||||
/* ============================================================================
|
||||
* Cache Maintenance
|
||||
* ========================================================================= */
|
||||
|
||||
/**
|
||||
* Synchronize instruction cache for modified code region.
|
||||
* Must be called after writing executable code.
|
||||
*
|
||||
* @param addr Start address (any alignment)
|
||||
* @param len Length in bytes
|
||||
*/
|
||||
void dh_icache_sync_range(void* addr, unsigned len);
|
||||
|
||||
/* ============================================================================
|
||||
* Memory Patching Primitives
|
||||
* ========================================================================= */
|
||||
|
||||
/**
|
||||
* Write 8-bit value with cache synchronization.
|
||||
* Atomic with respect to instruction fetch.
|
||||
*/
|
||||
void dh_write8(volatile void* p, uint8_t v);
|
||||
|
||||
/**
|
||||
* Write 16-bit value with cache synchronization (big-endian).
|
||||
*/
|
||||
void dh_write16(volatile void* p, uint16_t v);
|
||||
|
||||
/**
|
||||
* Write 32-bit value with cache synchronization (big-endian).
|
||||
*/
|
||||
void dh_write32(volatile void* p, uint32_t v);
|
||||
|
||||
/**
|
||||
* Suspend interrupts and return previous MSR state.
|
||||
* Must call dh_restore_interrupts() to restore.
|
||||
*
|
||||
* @return Previous MSR value
|
||||
*/
|
||||
uint32_t dh_suspend_interrupts(void);
|
||||
|
||||
/**
|
||||
* Restore interrupt state from saved MSR.
|
||||
*
|
||||
* @param saved_msr Value from dh_suspend_interrupts()
|
||||
*/
|
||||
void dh_restore_interrupts(uint32_t saved_msr);
|
||||
|
||||
/* ============================================================================
|
||||
* Branch Encoding Helpers
|
||||
* ========================================================================= */
|
||||
|
||||
/**
|
||||
* Create PowerPC branch immediate instruction.
|
||||
* Range: ±32MB from 'from' address.
|
||||
*
|
||||
* @param from Source address
|
||||
* @param to Target address
|
||||
* @param link 1 for bl (branch and link), 0 for b
|
||||
* @return Encoded instruction, or 0 if target out of range
|
||||
*/
|
||||
uint32_t dh_make_branch_imm(uint32_t from, uint32_t to, int link);
|
||||
|
||||
/**
|
||||
* Write absolute branch sequence (12 bytes).
|
||||
* Sequence: lis r12, hi16(to)
|
||||
* ori r12, r12, lo16(to)
|
||||
* mtctr r12
|
||||
* bctr
|
||||
*
|
||||
* Clobbers: r12, CTR
|
||||
*
|
||||
* @param at Target location to write (overwrites 12 bytes)
|
||||
* @param to Destination address
|
||||
* @param link Ignored (absolute branches don't support link)
|
||||
*/
|
||||
void dh_write_branch_abs(void* at, void* to, int link);
|
||||
|
||||
/* ============================================================================
|
||||
* Function Hooking
|
||||
* ========================================================================= */
|
||||
|
||||
/**
|
||||
* Function hook descriptor.
|
||||
* Zero-initialize before first use.
|
||||
*/
|
||||
typedef struct dh_hook {
|
||||
void* target; /* Function address to detour */
|
||||
void* replacement; /* Your hook function */
|
||||
void* trampoline; /* Generated trampoline (call original) */
|
||||
uint8_t saved[16]; /* Saved original bytes */
|
||||
uint32_t patch_len; /* Bytes overwritten at target (4 or 12) */
|
||||
} dh_hook;
|
||||
|
||||
/**
|
||||
* Install a function hook.
|
||||
*
|
||||
* Replaces target function's prologue with branch to replacement.
|
||||
* Generates trampoline containing original prologue + jump back.
|
||||
*
|
||||
* Requirements:
|
||||
* - h->target and h->replacement must be set
|
||||
* - First 16 bytes of target must be safe to overwrite
|
||||
* - Target prologue should not contain PC-relative branches
|
||||
*
|
||||
* @param h Hook descriptor (must remain valid while hook active)
|
||||
* @return 0 on success, -1 on allocation failure, -2 if unsafe
|
||||
*/
|
||||
int dh_hook_install(dh_hook* h);
|
||||
|
||||
/**
|
||||
* Remove a previously installed hook.
|
||||
* Restores original bytes and frees trampoline.
|
||||
*
|
||||
* @param h Hook descriptor from dh_hook_install()
|
||||
* @return 0 on success, -1 on error
|
||||
*/
|
||||
int dh_hook_remove(dh_hook* h);
|
||||
|
||||
/**
|
||||
* Create trampoline for calling original function.
|
||||
* Used internally by dh_hook_install().
|
||||
*
|
||||
* @param target Function address
|
||||
* @param stolen_len Bytes to copy (must be >= bytes overwritten)
|
||||
* @return Executable trampoline buffer, or NULL on failure
|
||||
*/
|
||||
void* dh_make_trampoline(void* target, uint32_t stolen_len);
|
||||
|
||||
/* ============================================================================
|
||||
* Pattern Scanning (optional, disable with DOLHOOK_NO_PATTERN)
|
||||
* ========================================================================= */
|
||||
|
||||
#ifndef DOLHOOK_NO_PATTERN
|
||||
|
||||
/**
|
||||
* Search for byte pattern in memory region.
|
||||
*
|
||||
* @param start Search region start
|
||||
* @param size Search region size
|
||||
* @param pat Pattern bytes (can include wildcards)
|
||||
* @param mask Mask string: 'x' = match, '?' = wildcard
|
||||
* @return Pointer to first match, or NULL if not found
|
||||
*
|
||||
* Example:
|
||||
* // Find "48 ?? ?? 01" (bl instruction with unknown offset)
|
||||
* char pat[] = {0x48, 0x00, 0x00, 0x01};
|
||||
* char mask[] = "x??x";
|
||||
* void* found = dh_find_pattern(start, size, pat, mask);
|
||||
*/
|
||||
void* dh_find_pattern(const void* start, size_t size,
|
||||
const char* pat, const char* mask);
|
||||
|
||||
#endif /* DOLHOOK_NO_PATTERN */
|
||||
|
||||
/* ============================================================================
|
||||
* Logging (optional, uses OSReport if available)
|
||||
* ========================================================================= */
|
||||
|
||||
/**
|
||||
* Log formatted message.
|
||||
* Uses OSReport if found, otherwise no-op.
|
||||
*
|
||||
* @param fmt Printf-style format string
|
||||
*/
|
||||
void dh_log(const char* fmt, ...);
|
||||
|
||||
/* ============================================================================
|
||||
* Initialization
|
||||
* ========================================================================= */
|
||||
|
||||
/**
|
||||
* Initialize DolHook runtime.
|
||||
* Called automatically by entry stub before game start.
|
||||
* Idempotent - safe to call multiple times.
|
||||
*
|
||||
* Actions:
|
||||
* - Print banner
|
||||
* - Install user hooks via dh_install_all_hooks()
|
||||
*/
|
||||
void dh_init(void);
|
||||
|
||||
/**
|
||||
* User hook installation callback.
|
||||
* Implement this function to install your hooks.
|
||||
* Called once by dh_init().
|
||||
*
|
||||
* Example:
|
||||
* void dh_install_all_hooks(void) {
|
||||
* static dh_hook my_hook;
|
||||
* my_hook.target = (void*)0x80001234;
|
||||
* my_hook.replacement = my_handler;
|
||||
* dh_hook_install(&my_hook);
|
||||
* }
|
||||
*/
|
||||
void dh_install_all_hooks(void);
|
||||
|
||||
/* ============================================================================
|
||||
* Internal/Advanced
|
||||
* ========================================================================= */
|
||||
|
||||
/**
|
||||
* Display banner message.
|
||||
* Tries OSReport first, falls back to VI text rendering.
|
||||
* Called by dh_init(), but can be called manually.
|
||||
*/
|
||||
void dh_banner(void);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* DOLHOOK_H */
|
||||
@@ -0,0 +1,54 @@
|
||||
/**
|
||||
* DolHook Linker Script
|
||||
*
|
||||
* Creates position-tolerant payload for injection into DOL.
|
||||
* Sections will be placed at addresses chosen by patcher.
|
||||
*/
|
||||
|
||||
OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", "elf32-powerpc")
|
||||
OUTPUT_ARCH(powerpc:common)
|
||||
|
||||
/* Default base - patcher may relocate */
|
||||
. = 0x80400000;
|
||||
|
||||
SECTIONS
|
||||
{
|
||||
/* Entry stub and code */
|
||||
.text : {
|
||||
*(.text.entry)
|
||||
*(.text .text.*)
|
||||
. = ALIGN(32);
|
||||
}
|
||||
|
||||
/* Read-only data */
|
||||
.rodata : {
|
||||
*(.rodata .rodata.*)
|
||||
. = ALIGN(4);
|
||||
}
|
||||
|
||||
/* Initialized data */
|
||||
.data : {
|
||||
*(.data.entry)
|
||||
*(.data .data.*)
|
||||
. = ALIGN(4);
|
||||
}
|
||||
|
||||
/* Zero-initialized data */
|
||||
.bss : {
|
||||
*(.bss .bss.*)
|
||||
*(COMMON)
|
||||
. = ALIGN(32);
|
||||
}
|
||||
|
||||
/* Discard debug and unneeded sections */
|
||||
/DISCARD/ : {
|
||||
*(.comment)
|
||||
*(.note*)
|
||||
*(.eh_frame*)
|
||||
*(.ARM.*)
|
||||
}
|
||||
}
|
||||
|
||||
/* Export key symbols for patcher */
|
||||
PROVIDE(__dolhook_start = ADDR(.text));
|
||||
PROVIDE(__dolhook_end = ADDR(.bss) + SIZEOF(.bss));
|
||||
@@ -0,0 +1,266 @@
|
||||
/**
|
||||
* DolHook Runtime Implementation
|
||||
* Core memory patching and function hooking for GameCube (PPC Gekko)
|
||||
*/
|
||||
|
||||
#include "dolhook.h"
|
||||
#include <string.h>
|
||||
#include <stdarg.h>
|
||||
|
||||
/* Simple heap for trampolines (16KB static buffer) */
|
||||
#define TRAMPOLINE_POOL_SIZE 16384
|
||||
static uint8_t g_trampoline_pool[TRAMPOLINE_POOL_SIZE] __attribute__((aligned(32)));
|
||||
static uint32_t g_trampoline_offset = 0;
|
||||
static int g_initialized = 0;
|
||||
|
||||
/* Weak OSReport symbol - may be resolved by game or not */
|
||||
extern void OSReport(const char* fmt, ...) __attribute__((weak));
|
||||
|
||||
/* ============================================================================
|
||||
* Cache Maintenance
|
||||
* ========================================================================= */
|
||||
|
||||
void dh_icache_sync_range(void* addr, unsigned len) {
|
||||
uint32_t start = (uint32_t)addr & ~31;
|
||||
uint32_t end = ((uint32_t)addr + len + 31) & ~31;
|
||||
|
||||
/* Flush data cache */
|
||||
for (uint32_t p = start; p < end; p += 32) {
|
||||
asm volatile("dcbf 0, %0" : : "r"(p) : "memory");
|
||||
}
|
||||
asm volatile("sync" : : : "memory");
|
||||
|
||||
/* Invalidate instruction cache */
|
||||
for (uint32_t p = start; p < end; p += 32) {
|
||||
asm volatile("icbi 0, %0" : : "r"(p) : "memory");
|
||||
}
|
||||
asm volatile("sync; isync" : : : "memory");
|
||||
}
|
||||
|
||||
/* ============================================================================
|
||||
* Interrupt Control
|
||||
* ========================================================================= */
|
||||
|
||||
uint32_t dh_suspend_interrupts(void) {
|
||||
uint32_t msr;
|
||||
asm volatile(
|
||||
"mfmsr %0\n"
|
||||
"rlwinm 3, %0, 0, 17, 15\n" /* Clear EE bit (bit 16) */
|
||||
"mtmsr 3\n"
|
||||
: "=r"(msr) : : "r3", "memory"
|
||||
);
|
||||
return msr;
|
||||
}
|
||||
|
||||
void dh_restore_interrupts(uint32_t saved_msr) {
|
||||
asm volatile("mtmsr %0" : : "r"(saved_msr) : "memory");
|
||||
}
|
||||
|
||||
/* ============================================================================
|
||||
* Memory Write Primitives
|
||||
* ========================================================================= */
|
||||
|
||||
void dh_write8(volatile void* p, uint8_t v) {
|
||||
uint32_t msr = dh_suspend_interrupts();
|
||||
*(volatile uint8_t*)p = v;
|
||||
dh_icache_sync_range((void*)p, 1);
|
||||
dh_restore_interrupts(msr);
|
||||
}
|
||||
|
||||
void dh_write16(volatile void* p, uint16_t v) {
|
||||
uint32_t msr = dh_suspend_interrupts();
|
||||
*(volatile uint16_t*)p = v;
|
||||
dh_icache_sync_range((void*)p, 2);
|
||||
dh_restore_interrupts(msr);
|
||||
}
|
||||
|
||||
void dh_write32(volatile void* p, uint32_t v) {
|
||||
uint32_t msr = dh_suspend_interrupts();
|
||||
*(volatile uint32_t*)p = v;
|
||||
dh_icache_sync_range((void*)p, 4);
|
||||
dh_restore_interrupts(msr);
|
||||
}
|
||||
|
||||
/* ============================================================================
|
||||
* Branch Encoding
|
||||
* ========================================================================= */
|
||||
|
||||
uint32_t dh_make_branch_imm(uint32_t from, uint32_t to, int link) {
|
||||
int32_t offset = (int32_t)to - (int32_t)from;
|
||||
|
||||
/* Check if within ±32MB range */
|
||||
if (offset < -0x2000000 || offset > 0x1FFFFFF) {
|
||||
return 0; /* Out of range */
|
||||
}
|
||||
|
||||
/* Encode: opcode[6] | offset[24] | AA[1] | LK[1] */
|
||||
uint32_t insn = 0x48000000; /* b/bl opcode */
|
||||
insn |= (offset & 0x03FFFFFC); /* 24-bit signed offset (word-aligned) */
|
||||
if (link) insn |= 1; /* Set LK bit */
|
||||
|
||||
return insn;
|
||||
}
|
||||
|
||||
void dh_write_branch_abs(void* at, void* to, int link) {
|
||||
uint32_t addr = (uint32_t)to;
|
||||
uint32_t* p = (uint32_t*)at;
|
||||
uint32_t msr = dh_suspend_interrupts();
|
||||
|
||||
/* lis r12, hi16(addr) */
|
||||
p[0] = 0x3D800000 | (addr >> 16);
|
||||
|
||||
/* ori r12, r12, lo16(addr) */
|
||||
p[1] = 0x618C0000 | (addr & 0xFFFF);
|
||||
|
||||
/* mtctr r12 */
|
||||
p[2] = 0x7D8903A6;
|
||||
|
||||
/* bctr (or bctrl if link requested, though typically not used) */
|
||||
p[3] = link ? 0x4E800421 : 0x4E800420;
|
||||
|
||||
dh_icache_sync_range(at, 16);
|
||||
dh_restore_interrupts(msr);
|
||||
}
|
||||
|
||||
/* ============================================================================
|
||||
* Trampoline Management
|
||||
* ========================================================================= */
|
||||
|
||||
void* dh_make_trampoline(void* target, uint32_t stolen_len) {
|
||||
/* Align allocation to 16 bytes */
|
||||
uint32_t aligned_offset = (g_trampoline_offset + 15) & ~15;
|
||||
uint32_t needed = stolen_len + 16; /* stolen code + jump back */
|
||||
|
||||
if (aligned_offset + needed > TRAMPOLINE_POOL_SIZE) {
|
||||
return NULL; /* Out of trampoline memory */
|
||||
}
|
||||
|
||||
uint8_t* trampoline = &g_trampoline_pool[aligned_offset];
|
||||
g_trampoline_offset = aligned_offset + needed;
|
||||
|
||||
/* Copy stolen bytes */
|
||||
memcpy(trampoline, target, stolen_len);
|
||||
|
||||
/* Append jump back to (target + stolen_len) */
|
||||
uint32_t return_addr = (uint32_t)target + stolen_len;
|
||||
uint32_t branch_at = (uint32_t)(trampoline + stolen_len);
|
||||
uint32_t branch_insn = dh_make_branch_imm(branch_at, return_addr, 0);
|
||||
|
||||
if (branch_insn != 0) {
|
||||
/* Near branch works */
|
||||
*(uint32_t*)(trampoline + stolen_len) = branch_insn;
|
||||
} else {
|
||||
/* Need absolute branch */
|
||||
dh_write_branch_abs(trampoline + stolen_len, (void*)return_addr, 0);
|
||||
}
|
||||
|
||||
/* Sync cache for trampoline */
|
||||
dh_icache_sync_range(trampoline, needed);
|
||||
|
||||
return trampoline;
|
||||
}
|
||||
|
||||
/* ============================================================================
|
||||
* Function Hooking
|
||||
* ========================================================================= */
|
||||
|
||||
int dh_hook_install(dh_hook* h) {
|
||||
if (!h || !h->target || !h->replacement) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Check if target and replacement are within ±32MB */
|
||||
uint32_t from = (uint32_t)h->target;
|
||||
uint32_t to = (uint32_t)h->replacement;
|
||||
int32_t offset = (int32_t)to - (int32_t)from;
|
||||
|
||||
/* Determine patch strategy */
|
||||
int use_near = (offset >= -0x2000000 && offset <= 0x1FFFFFF);
|
||||
uint32_t patch_len = use_near ? 4 : 16; /* 4 for bl, 16 for abs (12) + padding */
|
||||
uint32_t stolen_len = patch_len;
|
||||
|
||||
/* Save original bytes */
|
||||
memcpy(h->saved, h->target, 16);
|
||||
h->patch_len = patch_len;
|
||||
|
||||
/* Create trampoline */
|
||||
h->trampoline = dh_make_trampoline(h->target, stolen_len);
|
||||
if (!h->trampoline) {
|
||||
return -1; /* Allocation failed */
|
||||
}
|
||||
|
||||
/* Install hook */
|
||||
uint32_t msr = dh_suspend_interrupts();
|
||||
|
||||
if (use_near) {
|
||||
/* Write branch immediate */
|
||||
uint32_t branch = dh_make_branch_imm(from, to, 0);
|
||||
*(uint32_t*)h->target = branch;
|
||||
dh_icache_sync_range(h->target, 4);
|
||||
} else {
|
||||
/* Write absolute branch sequence */
|
||||
dh_write_branch_abs(h->target, h->replacement, 0);
|
||||
}
|
||||
|
||||
dh_restore_interrupts(msr);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int dh_hook_remove(dh_hook* h) {
|
||||
if (!h || !h->target) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Restore original bytes */
|
||||
uint32_t msr = dh_suspend_interrupts();
|
||||
memcpy(h->target, h->saved, h->patch_len);
|
||||
dh_icache_sync_range(h->target, h->patch_len);
|
||||
dh_restore_interrupts(msr);
|
||||
|
||||
/* Note: We don't free trampoline (static pool) */
|
||||
h->trampoline = NULL;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* ============================================================================
|
||||
* Logging
|
||||
* ========================================================================= */
|
||||
|
||||
void dh_log(const char* fmt, ...) {
|
||||
if (OSReport) {
|
||||
va_list args;
|
||||
va_start(args, fmt);
|
||||
/* OSReport doesn't have vprintf variant, format to buffer */
|
||||
char buf[256];
|
||||
vsnprintf(buf, sizeof(buf), fmt, args);
|
||||
OSReport("%s", buf);
|
||||
va_end(args);
|
||||
}
|
||||
/* Otherwise silent */
|
||||
}
|
||||
|
||||
/* ============================================================================
|
||||
* Initialization
|
||||
* ========================================================================= */
|
||||
|
||||
/* Weak symbol - user must implement */
|
||||
void dh_install_all_hooks(void) __attribute__((weak));
|
||||
|
||||
void dh_init(void) {
|
||||
if (g_initialized) {
|
||||
return; /* Already initialized */
|
||||
}
|
||||
g_initialized = 1;
|
||||
|
||||
/* Print banner */
|
||||
#ifndef DOLHOOK_NO_BANNER
|
||||
dh_banner();
|
||||
#endif
|
||||
|
||||
/* Install user hooks */
|
||||
if (dh_install_all_hooks) {
|
||||
dh_install_all_hooks();
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,61 @@
|
||||
/**
|
||||
* DolHook Entry Stub (PowerPC Assembly)
|
||||
*
|
||||
* This becomes the new DOL entrypoint. Responsibilities:
|
||||
* 1. Save volatile registers we'll clobber
|
||||
* 2. Call dh_init() to install hooks
|
||||
* 3. Tail-jump to original game entry (no stack frame)
|
||||
*/
|
||||
|
||||
.section .text.entry,"ax",@progbits
|
||||
.global __dolhook_entry
|
||||
.type __dolhook_entry, @function
|
||||
|
||||
__dolhook_entry:
|
||||
/* Save LR and volatile regs we'll use */
|
||||
mflr r0
|
||||
stwu r1, -0x20(r1) /* Create stack frame */
|
||||
stw r0, 0x24(r1) /* Save LR */
|
||||
stw r3, 0x08(r1) /* Save r3-r10 (volatile, might be args) */
|
||||
stw r4, 0x0C(r1)
|
||||
stw r5, 0x10(r1)
|
||||
stw r6, 0x14(r1)
|
||||
stw r7, 0x18(r1)
|
||||
stw r8, 0x1C(r1)
|
||||
|
||||
/* Call dh_init() - initializes hooks and prints banner */
|
||||
bl dh_init
|
||||
|
||||
/* Restore saved registers */
|
||||
lwz r8, 0x1C(r1)
|
||||
lwz r7, 0x18(r1)
|
||||
lwz r6, 0x14(r1)
|
||||
lwz r5, 0x10(r1)
|
||||
lwz r4, 0x0C(r1)
|
||||
lwz r3, 0x08(r1)
|
||||
lwz r0, 0x24(r1)
|
||||
mtlr r0
|
||||
addi r1, r1, 0x20 /* Destroy stack frame */
|
||||
|
||||
/* Load original entry address and tail-jump to it */
|
||||
lis r12, __dolhook_original_entry@ha
|
||||
lwz r12, __dolhook_original_entry@l(r12)
|
||||
mtctr r12
|
||||
bctr /* Jump to original entry (no link) */
|
||||
|
||||
.size __dolhook_entry, . - __dolhook_entry
|
||||
|
||||
/* ========================================================================== */
|
||||
|
||||
/**
|
||||
* Storage for original game entry address.
|
||||
* Filled by patcher before injection.
|
||||
*/
|
||||
.section .data.entry,"aw",@progbits
|
||||
.global __dolhook_original_entry
|
||||
.align 2
|
||||
|
||||
__dolhook_original_entry:
|
||||
.long 0x80003100 /* Placeholder, overwritten by patcher */
|
||||
|
||||
.size __dolhook_original_entry, 4
|
||||
@@ -0,0 +1,42 @@
|
||||
/**
|
||||
* DolHook Pattern Scanning
|
||||
* Find byte patterns in memory with wildcard support
|
||||
*/
|
||||
|
||||
#include "dolhook.h"
|
||||
|
||||
#ifndef DOLHOOK_NO_PATTERN
|
||||
|
||||
void* dh_find_pattern(const void* start, size_t size,
|
||||
const char* pat, const char* mask) {
|
||||
const uint8_t* mem = (const uint8_t*)start;
|
||||
size_t pat_len = 0;
|
||||
|
||||
/* Calculate pattern length from mask */
|
||||
while (mask[pat_len]) pat_len++;
|
||||
|
||||
if (pat_len == 0 || size < pat_len) {
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Scan memory */
|
||||
for (size_t i = 0; i <= size - pat_len; i++) {
|
||||
int match = 1;
|
||||
|
||||
for (size_t j = 0; j < pat_len; j++) {
|
||||
if (mask[j] == 'x' && mem[i + j] != (uint8_t)pat[j]) {
|
||||
match = 0;
|
||||
break;
|
||||
}
|
||||
/* '?' means wildcard - always matches */
|
||||
}
|
||||
|
||||
if (match) {
|
||||
return (void*)(mem + i);
|
||||
}
|
||||
}
|
||||
|
||||
return NULL; /* Not found */
|
||||
}
|
||||
|
||||
#endif /* DOLHOOK_NO_PATTERN */
|
||||
File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,142 @@
|
||||
/**
|
||||
* Unit tests for DOL parser
|
||||
*/
|
||||
|
||||
#include "../tools/patchiso/dol.h"
|
||||
#include <cassert>
|
||||
#include <iostream>
|
||||
#include <cstring>
|
||||
|
||||
using namespace dolhook;
|
||||
|
||||
void test_dol_header_parse() {
|
||||
std::cout << "Testing DOL header parse/serialize... ";
|
||||
|
||||
// Create a minimal valid DOL header
|
||||
uint8_t header_data[0x100];
|
||||
std::memset(header_data, 0, sizeof(header_data));
|
||||
|
||||
// Set up one text section
|
||||
// Offset at 0x100, load at 0x80003100, size 0x1000
|
||||
header_data[0x00] = 0x00; header_data[0x01] = 0x00;
|
||||
header_data[0x02] = 0x01; header_data[0x03] = 0x00;
|
||||
|
||||
header_data[0x74] = 0x80; header_data[0x75] = 0x00;
|
||||
header_data[0x76] = 0x31; header_data[0x77] = 0x00;
|
||||
|
||||
header_data[0xE8] = 0x00; header_data[0xE9] = 0x00;
|
||||
header_data[0xEA] = 0x10; header_data[0xEB] = 0x00;
|
||||
|
||||
// Entry point
|
||||
header_data[0x164] = 0x80; header_data[0x165] = 0x00;
|
||||
header_data[0x166] = 0x31; header_data[0x167] = 0x00;
|
||||
|
||||
// Parse
|
||||
DOLHeader hdr;
|
||||
assert(hdr.parse(header_data));
|
||||
|
||||
// Verify
|
||||
assert(hdr.text_offsets[0] == 0x100);
|
||||
assert(hdr.text_addrs[0] == 0x80003100);
|
||||
assert(hdr.text_sizes[0] == 0x1000);
|
||||
assert(hdr.entry_point == 0x80003100);
|
||||
|
||||
// Serialize and compare
|
||||
uint8_t output[0x100];
|
||||
hdr.serialize(output);
|
||||
|
||||
// Check key fields match
|
||||
assert(output[0x164] == 0x80);
|
||||
assert(output[0x167] == 0x00);
|
||||
|
||||
std::cout << "PASS\n";
|
||||
}
|
||||
|
||||
void test_dol_section_management() {
|
||||
std::cout << "Testing DOL section management... ";
|
||||
|
||||
DOLHeader hdr;
|
||||
std::memset(&hdr, 0, sizeof(hdr));
|
||||
hdr.entry_point = 0x80003100;
|
||||
|
||||
// Add a text section
|
||||
DOLSection sec;
|
||||
sec.file_offset = 0x100;
|
||||
sec.load_addr = 0x80003100;
|
||||
sec.size = 0x1000;
|
||||
sec.is_text = true;
|
||||
|
||||
assert(hdr.add_section(sec));
|
||||
assert(hdr.text_sizes[0] == 0x1000);
|
||||
|
||||
// Get sections
|
||||
auto sections = hdr.get_sections();
|
||||
assert(sections.size() == 1);
|
||||
assert(sections[0].load_addr == 0x80003100);
|
||||
|
||||
// Get highest address
|
||||
uint32_t highest = hdr.get_highest_addr();
|
||||
assert(highest == 0x80004100);
|
||||
|
||||
std::cout << "PASS\n";
|
||||
}
|
||||
|
||||
void test_branch_encoding() {
|
||||
std::cout << "Testing branch encoding... ";
|
||||
|
||||
// Test near branch within range
|
||||
uint32_t from = 0x80003100;
|
||||
uint32_t to = 0x80003200;
|
||||
|
||||
// Calculate expected offset
|
||||
int32_t offset = to - from;
|
||||
uint32_t expected = 0x48000000 | (offset & 0x03FFFFFC);
|
||||
|
||||
// In the actual implementation, this would test dh_make_branch_imm
|
||||
// For now, just verify the math
|
||||
assert(offset == 0x100);
|
||||
assert((offset & 0x03FFFFFC) == 0x100);
|
||||
|
||||
std::cout << "PASS\n";
|
||||
}
|
||||
|
||||
void test_dol_file_operations() {
|
||||
std::cout << "Testing DOL file operations... ";
|
||||
|
||||
// Create minimal DOL
|
||||
std::vector<uint8_t> dol_data(0x200, 0);
|
||||
|
||||
// Setup header
|
||||
dol_data[0x164] = 0x80;
|
||||
dol_data[0x167] = 0x00;
|
||||
|
||||
DOLFile dol;
|
||||
assert(dol.load(dol_data));
|
||||
|
||||
// Verify round-trip
|
||||
auto saved = dol.save();
|
||||
assert(saved.size() >= 0x100);
|
||||
assert(saved[0x164] == 0x80);
|
||||
|
||||
std::cout << "PASS\n";
|
||||
}
|
||||
|
||||
int main() {
|
||||
std::cout << "Running DOL parser tests...\n\n";
|
||||
|
||||
try {
|
||||
test_dol_header_parse();
|
||||
test_dol_section_management();
|
||||
test_branch_encoding();
|
||||
test_dol_file_operations();
|
||||
|
||||
std::cout << "\nAll tests passed!\n";
|
||||
return 0;
|
||||
} catch (const std::exception& e) {
|
||||
std::cerr << "\nTest failed with exception: " << e.what() << "\n";
|
||||
return 1;
|
||||
} catch (...) {
|
||||
std::cerr << "\nTest failed with unknown exception\n";
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
+42
@@ -0,0 +1,42 @@
|
||||
#!/bin/bash
|
||||
# Environment setup for DolHook development
|
||||
|
||||
# Detect devkitPro installation
|
||||
if [ -z "$DEVKITPRO" ]; then
|
||||
if [ -d "/opt/devkitpro" ]; then
|
||||
export DEVKITPRO=/opt/devkitpro
|
||||
elif [ -d "$HOME/devkitpro" ]; then
|
||||
export DEVKITPRO=$HOME/devkitpro
|
||||
else
|
||||
echo "Error: devkitPro not found!"
|
||||
echo "Please install devkitPro from https://devkitpro.org/wiki/Getting_Started"
|
||||
return 1
|
||||
fi
|
||||
fi
|
||||
|
||||
export DEVKITPPC=$DEVKITPRO/devkitPPC
|
||||
export PATH=$DEVKITPPC/bin:$PATH
|
||||
|
||||
# Verify installation
|
||||
if ! command -v powerpc-eabi-gcc &> /dev/null; then
|
||||
echo "Error: powerpc-eabi-gcc not found in PATH"
|
||||
echo "DEVKITPPC=$DEVKITPPC"
|
||||
return 1
|
||||
fi
|
||||
|
||||
echo "DolHook environment configured:"
|
||||
echo " DEVKITPRO=$DEVKITPRO"
|
||||
echo " DEVKITPPC=$DEVKITPPC"
|
||||
echo " Compiler: $(powerpc-eabi-gcc --version | head -n1)"
|
||||
|
||||
# Optional: Set aliases
|
||||
alias build-runtime='make runtime'
|
||||
alias build-patcher='make patcher'
|
||||
alias build-all='make all'
|
||||
alias patch-iso='./patchiso'
|
||||
|
||||
echo ""
|
||||
echo "Ready to build! Try:"
|
||||
echo " make all - Build everything"
|
||||
echo " make runtime - Build PPC payload only"
|
||||
echo " make patcher - Build patcher only"
|
||||
@@ -0,0 +1,273 @@
|
||||
/**
|
||||
* DOL Parser Implementation
|
||||
*/
|
||||
|
||||
#include "dol.h"
|
||||
#include <cstring>
|
||||
#include <sstream>
|
||||
#include <iomanip>
|
||||
#include <algorithm>
|
||||
|
||||
namespace dolhook {
|
||||
|
||||
// Read big-endian uint32
|
||||
static uint32_t read_be32(const uint8_t* p) {
|
||||
return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
|
||||
}
|
||||
|
||||
// Write big-endian uint32
|
||||
static void write_be32(uint8_t* p, uint32_t v) {
|
||||
p[0] = (v >> 24) & 0xFF;
|
||||
p[1] = (v >> 16) & 0xFF;
|
||||
p[2] = (v >> 8) & 0xFF;
|
||||
p[3] = v & 0xFF;
|
||||
}
|
||||
|
||||
bool DOLHeader::parse(const uint8_t* data) {
|
||||
// Text section offsets (0x00)
|
||||
for (size_t i = 0; i < MAX_TEXT_SECTIONS; i++) {
|
||||
text_offsets[i] = read_be32(data + i * 4);
|
||||
}
|
||||
|
||||
// Data section offsets (0x48)
|
||||
for (size_t i = 0; i < MAX_DATA_SECTIONS; i++) {
|
||||
data_offsets[i] = read_be32(data + 0x48 + i * 4);
|
||||
}
|
||||
|
||||
// Text section addresses (0x74)
|
||||
for (size_t i = 0; i < MAX_TEXT_SECTIONS; i++) {
|
||||
text_addrs[i] = read_be32(data + 0x74 + i * 4);
|
||||
}
|
||||
|
||||
// Data section addresses (0xBC)
|
||||
for (size_t i = 0; i < MAX_DATA_SECTIONS; i++) {
|
||||
data_addrs[i] = read_be32(data + 0xBC + i * 4);
|
||||
}
|
||||
|
||||
// Text section sizes (0xE8)
|
||||
for (size_t i = 0; i < MAX_TEXT_SECTIONS; i++) {
|
||||
text_sizes[i] = read_be32(data + 0xE8 + i * 4);
|
||||
}
|
||||
|
||||
// Data section sizes (0x130)
|
||||
for (size_t i = 0; i < MAX_DATA_SECTIONS; i++) {
|
||||
data_sizes[i] = read_be32(data + 0x130 + i * 4);
|
||||
}
|
||||
|
||||
// BSS (0x15C)
|
||||
bss_addr = read_be32(data + 0x15C);
|
||||
bss_size = read_be32(data + 0x160);
|
||||
|
||||
// Entry point (0x164)
|
||||
entry_point = read_be32(data + 0x164);
|
||||
|
||||
return is_valid();
|
||||
}
|
||||
|
||||
void DOLHeader::serialize(uint8_t* data) const {
|
||||
std::memset(data, 0, 0x100);
|
||||
|
||||
for (size_t i = 0; i < MAX_TEXT_SECTIONS; i++) {
|
||||
write_be32(data + i * 4, text_offsets[i]);
|
||||
}
|
||||
|
||||
for (size_t i = 0; i < MAX_DATA_SECTIONS; i++) {
|
||||
write_be32(data + 0x48 + i * 4, data_offsets[i]);
|
||||
}
|
||||
|
||||
for (size_t i = 0; i < MAX_TEXT_SECTIONS; i++) {
|
||||
write_be32(data + 0x74 + i * 4, text_addrs[i]);
|
||||
}
|
||||
|
||||
for (size_t i = 0; i < MAX_DATA_SECTIONS; i++) {
|
||||
write_be32(data + 0xBC + i * 4, data_addrs[i]);
|
||||
}
|
||||
|
||||
for (size_t i = 0; i < MAX_TEXT_SECTIONS; i++) {
|
||||
write_be32(data + 0xE8 + i * 4, text_sizes[i]);
|
||||
}
|
||||
|
||||
for (size_t i = 0; i < MAX_DATA_SECTIONS; i++) {
|
||||
write_be32(data + 0x130 + i * 4, data_sizes[i]);
|
||||
}
|
||||
|
||||
write_be32(data + 0x15C, bss_addr);
|
||||
write_be32(data + 0x160, bss_size);
|
||||
write_be32(data + 0x164, entry_point);
|
||||
}
|
||||
|
||||
std::vector<DOLSection> DOLHeader::get_sections() const {
|
||||
std::vector<DOLSection> sections;
|
||||
|
||||
for (size_t i = 0; i < MAX_TEXT_SECTIONS; i++) {
|
||||
if (text_sizes[i] > 0) {
|
||||
sections.push_back({text_offsets[i], text_addrs[i], text_sizes[i], true});
|
||||
}
|
||||
}
|
||||
|
||||
for (size_t i = 0; i < MAX_DATA_SECTIONS; i++) {
|
||||
if (data_sizes[i] > 0) {
|
||||
sections.push_back({data_offsets[i], data_addrs[i], data_sizes[i], false});
|
||||
}
|
||||
}
|
||||
|
||||
return sections;
|
||||
}
|
||||
|
||||
uint32_t DOLHeader::get_highest_addr() const {
|
||||
uint32_t highest = 0;
|
||||
|
||||
for (size_t i = 0; i < MAX_TEXT_SECTIONS; i++) {
|
||||
if (text_sizes[i] > 0) {
|
||||
uint32_t end = text_addrs[i] + text_sizes[i];
|
||||
if (end > highest) highest = end;
|
||||
}
|
||||
}
|
||||
|
||||
for (size_t i = 0; i < MAX_DATA_SECTIONS; i++) {
|
||||
if (data_sizes[i] > 0) {
|
||||
uint32_t end = data_addrs[i] + data_sizes[i];
|
||||
if (end > highest) highest = end;
|
||||
}
|
||||
}
|
||||
|
||||
if (bss_size > 0) {
|
||||
uint32_t bss_end = bss_addr + bss_size;
|
||||
if (bss_end > highest) highest = bss_end;
|
||||
}
|
||||
|
||||
return highest;
|
||||
}
|
||||
|
||||
bool DOLHeader::is_valid() const {
|
||||
// Entry point should be in valid range
|
||||
if (entry_point < 0x80000000 || entry_point > 0x81800000) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// Check section alignment and ranges
|
||||
for (size_t i = 0; i < MAX_TEXT_SECTIONS; i++) {
|
||||
if (text_sizes[i] > 0) {
|
||||
if (text_offsets[i] < 0x100) return false; // Before header
|
||||
if (text_addrs[i] < 0x80000000) return false;
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool DOLHeader::add_section(const DOLSection& sec) {
|
||||
if (sec.is_text) {
|
||||
for (size_t i = 0; i < MAX_TEXT_SECTIONS; i++) {
|
||||
if (text_sizes[i] == 0) {
|
||||
text_offsets[i] = sec.file_offset;
|
||||
text_addrs[i] = sec.load_addr;
|
||||
text_sizes[i] = sec.size;
|
||||
return true;
|
||||
}
|
||||
}
|
||||
} else {
|
||||
for (size_t i = 0; i < MAX_DATA_SECTIONS; i++) {
|
||||
if (data_sizes[i] == 0) {
|
||||
data_offsets[i] = sec.file_offset;
|
||||
data_addrs[i] = sec.load_addr;
|
||||
data_sizes[i] = sec.size;
|
||||
return true;
|
||||
}
|
||||
}
|
||||
}
|
||||
return false; // No free slots
|
||||
}
|
||||
|
||||
bool DOLFile::load(const std::vector<uint8_t>& data) {
|
||||
if (data.size() < 0x100) {
|
||||
return false;
|
||||
}
|
||||
|
||||
if (!header_.parse(data.data())) {
|
||||
return false;
|
||||
}
|
||||
|
||||
data_ = data;
|
||||
return true;
|
||||
}
|
||||
|
||||
std::vector<uint8_t> DOLFile::save() const {
|
||||
std::vector<uint8_t> result = data_;
|
||||
|
||||
// Ensure header is at least 0x100 bytes
|
||||
if (result.size() < 0x100) {
|
||||
result.resize(0x100);
|
||||
}
|
||||
|
||||
// Write header
|
||||
header_.serialize(result.data());
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
std::vector<uint8_t> DOLFile::get_section_data(const DOLSection& sec) const {
|
||||
if (sec.file_offset + sec.size > data_.size()) {
|
||||
return {};
|
||||
}
|
||||
|
||||
return std::vector<uint8_t>(
|
||||
data_.begin() + sec.file_offset,
|
||||
data_.begin() + sec.file_offset + sec.size
|
||||
);
|
||||
}
|
||||
|
||||
bool DOLFile::inject_payload(const std::vector<uint8_t>& payload,
|
||||
uint32_t load_addr,
|
||||
bool is_text) {
|
||||
// Align file offset
|
||||
uint32_t file_offset = (data_.size() + 31) & ~31;
|
||||
|
||||
// Expand data buffer
|
||||
data_.resize(file_offset + payload.size());
|
||||
|
||||
// Copy payload
|
||||
std::memcpy(data_.data() + file_offset, payload.data(), payload.size());
|
||||
|
||||
// Add section to header
|
||||
DOLSection sec;
|
||||
sec.file_offset = file_offset;
|
||||
sec.load_addr = load_addr;
|
||||
sec.size = payload.size();
|
||||
sec.is_text = is_text;
|
||||
|
||||
return header_.add_section(sec);
|
||||
}
|
||||
|
||||
std::string DOLFile::format_header() const {
|
||||
std::ostringstream oss;
|
||||
oss << std::hex << std::setfill('0');
|
||||
|
||||
oss << "DOL Header:\n";
|
||||
oss << " Entry Point: 0x" << std::setw(8) << header_.entry_point << "\n";
|
||||
oss << " BSS: 0x" << std::setw(8) << header_.bss_addr
|
||||
<< " - 0x" << std::setw(8) << (header_.bss_addr + header_.bss_size)
|
||||
<< " (size: 0x" << std::setw(8) << header_.bss_size << ")\n\n";
|
||||
|
||||
oss << "Text Sections:\n";
|
||||
for (size_t i = 0; i < DOLHeader::MAX_TEXT_SECTIONS; i++) {
|
||||
if (header_.text_sizes[i] > 0) {
|
||||
oss << " [" << i << "] File:0x" << std::setw(8) << header_.text_offsets[i]
|
||||
<< " -> Addr:0x" << std::setw(8) << header_.text_addrs[i]
|
||||
<< " Size:0x" << std::setw(8) << header_.text_sizes[i] << "\n";
|
||||
}
|
||||
}
|
||||
|
||||
oss << "\nData Sections:\n";
|
||||
for (size_t i = 0; i < DOLHeader::MAX_DATA_SECTIONS; i++) {
|
||||
if (header_.data_sizes[i] > 0) {
|
||||
oss << " [" << i << "] File:0x" << std::setw(8) << header_.data_offsets[i]
|
||||
<< " -> Addr:0x" << std::setw(8) << header_.data_addrs[i]
|
||||
<< " Size:0x" << std::setw(8) << header_.data_sizes[i] << "\n";
|
||||
}
|
||||
}
|
||||
|
||||
return oss.str();
|
||||
}
|
||||
|
||||
} // namespace dolhook
|
||||
@@ -0,0 +1,85 @@
|
||||
/**
|
||||
* DOL (Dolphin Executable) Format Parser
|
||||
* GameCube/Wii executable format
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <cstdint>
|
||||
#include <vector>
|
||||
#include <string>
|
||||
|
||||
namespace dolhook {
|
||||
|
||||
struct DOLSection {
|
||||
uint32_t file_offset; // Offset in DOL file
|
||||
uint32_t load_addr; // Virtual address to load at
|
||||
uint32_t size; // Section size
|
||||
bool is_text; // Text or data section
|
||||
};
|
||||
|
||||
struct DOLHeader {
|
||||
static constexpr size_t MAX_TEXT_SECTIONS = 18;
|
||||
static constexpr size_t MAX_DATA_SECTIONS = 11;
|
||||
|
||||
uint32_t text_offsets[MAX_TEXT_SECTIONS];
|
||||
uint32_t data_offsets[MAX_DATA_SECTIONS];
|
||||
uint32_t text_addrs[MAX_TEXT_SECTIONS];
|
||||
uint32_t data_addrs[MAX_DATA_SECTIONS];
|
||||
uint32_t text_sizes[MAX_TEXT_SECTIONS];
|
||||
uint32_t data_sizes[MAX_DATA_SECTIONS];
|
||||
uint32_t bss_addr;
|
||||
uint32_t bss_size;
|
||||
uint32_t entry_point;
|
||||
|
||||
// Parse from big-endian buffer
|
||||
bool parse(const uint8_t* data);
|
||||
|
||||
// Serialize to big-endian buffer
|
||||
void serialize(uint8_t* data) const;
|
||||
|
||||
// Get all sections
|
||||
std::vector<DOLSection> get_sections() const;
|
||||
|
||||
// Find highest address used
|
||||
uint32_t get_highest_addr() const;
|
||||
|
||||
// Validation
|
||||
bool is_valid() const;
|
||||
|
||||
// Add new section
|
||||
bool add_section(const DOLSection& sec);
|
||||
};
|
||||
|
||||
class DOLFile {
|
||||
public:
|
||||
DOLFile() = default;
|
||||
|
||||
// Load from buffer
|
||||
bool load(const std::vector<uint8_t>& data);
|
||||
|
||||
// Save to buffer
|
||||
std::vector<uint8_t> save() const;
|
||||
|
||||
// Getters
|
||||
const DOLHeader& header() const { return header_; }
|
||||
DOLHeader& header() { return header_; }
|
||||
const std::vector<uint8_t>& data() const { return data_; }
|
||||
|
||||
// Get section data
|
||||
std::vector<uint8_t> get_section_data(const DOLSection& sec) const;
|
||||
|
||||
// Inject new code/data sections
|
||||
bool inject_payload(const std::vector<uint8_t>& payload,
|
||||
uint32_t load_addr,
|
||||
bool is_text);
|
||||
|
||||
// Print header for debugging
|
||||
std::string format_header() const;
|
||||
|
||||
private:
|
||||
DOLHeader header_;
|
||||
std::vector<uint8_t> data_;
|
||||
};
|
||||
|
||||
} // namespace dolhook
|
||||
@@ -0,0 +1,220 @@
|
||||
/**
|
||||
* GCM ISO Parser Implementation
|
||||
*/
|
||||
|
||||
#include "gcm.h"
|
||||
#include <fstream>
|
||||
#include <cstring>
|
||||
#include <algorithm>
|
||||
#include <sstream>
|
||||
#include <iomanip>
|
||||
#include <filesystem>
|
||||
|
||||
namespace dolhook {
|
||||
|
||||
static uint32_t read_be32(const uint8_t* p) {
|
||||
return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
|
||||
}
|
||||
|
||||
static void write_be32(uint8_t* p, uint32_t v) {
|
||||
p[0] = (v >> 24) & 0xFF;
|
||||
p[1] = (v >> 16) & 0xFF;
|
||||
p[2] = (v >> 8) & 0xFF;
|
||||
p[3] = v & 0xFF;
|
||||
}
|
||||
|
||||
bool GCMHeader::parse(const uint8_t* data) {
|
||||
std::memcpy(game_code, data, 6);
|
||||
std::memcpy(maker_code, data + 6, 2);
|
||||
disc_id = data[8];
|
||||
version = data[9];
|
||||
audio_streaming = data[10];
|
||||
stream_buf_size = data[11];
|
||||
|
||||
// Game name at 0x20
|
||||
std::memcpy(game_name, data + 0x20, sizeof(game_name));
|
||||
game_name[sizeof(game_name) - 1] = 0; // Ensure null termination
|
||||
|
||||
// Main.dol offset at 0x420
|
||||
dol_offset = read_be32(data + 0x420);
|
||||
fst_offset = read_be32(data + 0x424);
|
||||
fst_size = read_be32(data + 0x428);
|
||||
fst_max_size = read_be32(data + 0x42C);
|
||||
|
||||
return is_valid();
|
||||
}
|
||||
|
||||
void GCMHeader::serialize(uint8_t* data) const {
|
||||
std::memcpy(data, game_code, 6);
|
||||
std::memcpy(data + 6, maker_code, 2);
|
||||
data[8] = disc_id;
|
||||
data[9] = version;
|
||||
data[10] = audio_streaming;
|
||||
data[11] = stream_buf_size;
|
||||
|
||||
std::memcpy(data + 0x20, game_name, sizeof(game_name));
|
||||
|
||||
write_be32(data + 0x420, dol_offset);
|
||||
write_be32(data + 0x424, fst_offset);
|
||||
write_be32(data + 0x428, fst_size);
|
||||
write_be32(data + 0x42C, fst_max_size);
|
||||
}
|
||||
|
||||
bool GCMHeader::is_valid() const {
|
||||
// Check magic/game code sanity
|
||||
if (game_code[0] == 0) return false;
|
||||
|
||||
// DOL offset should be reasonable
|
||||
if (dol_offset < SIZE || dol_offset > 0x10000000) return false;
|
||||
|
||||
// FST offset should be after DOL
|
||||
if (fst_offset < dol_offset || fst_offset > 0x10000000) return false;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
std::string GCMHeader::format() const {
|
||||
std::ostringstream oss;
|
||||
oss << "GCM Header:\n";
|
||||
oss << " Game: " << std::string(game_name, strnlen(game_name, sizeof(game_name))) << "\n";
|
||||
oss << " Code: " << std::string(game_code, 4) << "\n";
|
||||
oss << " Maker: " << std::string(maker_code, 2) << "\n";
|
||||
oss << std::hex << std::setfill('0');
|
||||
oss << " DOL Offset: 0x" << std::setw(8) << dol_offset << "\n";
|
||||
oss << " FST Offset: 0x" << std::setw(8) << fst_offset << "\n";
|
||||
oss << " FST Size: 0x" << std::setw(8) << fst_size << "\n";
|
||||
return oss.str();
|
||||
}
|
||||
|
||||
bool GCMFile::load(const std::string& path) {
|
||||
std::ifstream file(path, std::ios::binary);
|
||||
if (!file) return false;
|
||||
|
||||
file.seekg(0, std::ios::end);
|
||||
size_t size = file.tellg();
|
||||
file.seekg(0, std::ios::beg);
|
||||
|
||||
data_.resize(size);
|
||||
file.read(reinterpret_cast<char*>(data_.data()), size);
|
||||
|
||||
if (!file) return false;
|
||||
|
||||
path_ = path;
|
||||
return header_.parse(data_.data());
|
||||
}
|
||||
|
||||
bool GCMFile::save(const std::string& path) {
|
||||
// Update header in data
|
||||
if (data_.size() < GCMHeader::SIZE) {
|
||||
return false;
|
||||
}
|
||||
header_.serialize(data_.data());
|
||||
|
||||
std::ofstream file(path, std::ios::binary);
|
||||
if (!file) return false;
|
||||
|
||||
file.write(reinterpret_cast<const char*>(data_.data()), data_.size());
|
||||
|
||||
return file.good();
|
||||
}
|
||||
|
||||
bool GCMFile::create_backup(const std::string& original_path) {
|
||||
std::string backup_path = original_path + ".bak";
|
||||
|
||||
try {
|
||||
std::filesystem::copy_file(
|
||||
original_path,
|
||||
backup_path,
|
||||
std::filesystem::copy_options::skip_existing
|
||||
);
|
||||
return true;
|
||||
} catch (...) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
DOLFile GCMFile::read_dol() const {
|
||||
DOLFile dol;
|
||||
|
||||
// Read DOL data starting at offset
|
||||
uint32_t dol_start = header_.dol_offset;
|
||||
|
||||
// Read at least header first
|
||||
if (dol_start + 0x100 > data_.size()) {
|
||||
return dol;
|
||||
}
|
||||
|
||||
// Parse header to determine full size
|
||||
DOLHeader temp_header;
|
||||
if (!temp_header.parse(data_.data() + dol_start)) {
|
||||
return dol;
|
||||
}
|
||||
|
||||
// Find end of DOL (highest file offset + size)
|
||||
uint32_t dol_end = 0x100; // At least header
|
||||
auto sections = temp_header.get_sections();
|
||||
for (const auto& sec : sections) {
|
||||
uint32_t sec_end = sec.file_offset + sec.size;
|
||||
if (sec_end > dol_end) dol_end = sec_end;
|
||||
}
|
||||
|
||||
// Extract DOL data
|
||||
std::vector<uint8_t> dol_data(
|
||||
data_.begin() + dol_start,
|
||||
data_.begin() + dol_start + dol_end
|
||||
);
|
||||
|
||||
dol.load(dol_data);
|
||||
return dol;
|
||||
}
|
||||
|
||||
bool GCMFile::write_dol(const DOLFile& dol) {
|
||||
auto dol_data = dol.save();
|
||||
uint32_t dol_start = header_.dol_offset;
|
||||
|
||||
// Check if it fits in place
|
||||
uint32_t available = header_.fst_offset - dol_start;
|
||||
if (dol_data.size() > available) {
|
||||
return false; // Need to relocate
|
||||
}
|
||||
|
||||
// Write in place
|
||||
std::memcpy(data_.data() + dol_start, dol_data.data(), dol_data.size());
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool GCMFile::relocate_dol(const DOLFile& dol) {
|
||||
auto dol_data = dol.save();
|
||||
|
||||
// Align to 0x8000 boundary at end of ISO
|
||||
uint32_t new_offset = (data_.size() + 0x7FFF) & ~0x7FFF;
|
||||
|
||||
// Expand ISO
|
||||
data_.resize(new_offset + dol_data.size());
|
||||
|
||||
// Write DOL
|
||||
std::memcpy(data_.data() + new_offset, dol_data.data(), dol_data.size());
|
||||
|
||||
// Update header
|
||||
header_.dol_offset = new_offset;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
std::vector<uint8_t> GCMFile::read(uint32_t offset, uint32_t size) const {
|
||||
if (offset + size > data_.size()) {
|
||||
return {};
|
||||
}
|
||||
return std::vector<uint8_t>(data_.begin() + offset, data_.begin() + offset + size);
|
||||
}
|
||||
|
||||
bool GCMFile::write(uint32_t offset, const std::vector<uint8_t>& data) {
|
||||
if (offset + data.size() > data_.size()) {
|
||||
data_.resize(offset + data.size());
|
||||
}
|
||||
std::memcpy(data_.data() + offset, data.data(), data.size());
|
||||
return true;
|
||||
}
|
||||
|
||||
} // namespace dolhook
|
||||
@@ -0,0 +1,82 @@
|
||||
/**
|
||||
* GCM (GameCube Master) ISO Format
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <cstdint>
|
||||
#include <vector>
|
||||
#include <string>
|
||||
#include "dol.h"
|
||||
|
||||
namespace dolhook {
|
||||
|
||||
struct GCMHeader {
|
||||
static constexpr size_t SIZE = 0x2440;
|
||||
|
||||
char game_code[6];
|
||||
char maker_code[2];
|
||||
uint8_t disc_id;
|
||||
uint8_t version;
|
||||
uint8_t audio_streaming;
|
||||
uint8_t stream_buf_size;
|
||||
uint8_t unused[18];
|
||||
char game_name[0x3E0];
|
||||
uint32_t dol_offset; // Offset to main.dol (0x420)
|
||||
uint32_t fst_offset; // File system table offset (0x424)
|
||||
uint32_t fst_size; // FST size (0x428)
|
||||
uint32_t fst_max_size; // FST max size (0x42C)
|
||||
|
||||
// Parse from buffer
|
||||
bool parse(const uint8_t* data);
|
||||
|
||||
// Serialize to buffer
|
||||
void serialize(uint8_t* data) const;
|
||||
|
||||
// Validation
|
||||
bool is_valid() const;
|
||||
|
||||
// Format for display
|
||||
std::string format() const;
|
||||
};
|
||||
|
||||
class GCMFile {
|
||||
public:
|
||||
GCMFile() = default;
|
||||
|
||||
// Load from file
|
||||
bool load(const std::string& path);
|
||||
|
||||
// Save to file
|
||||
bool save(const std::string& path);
|
||||
|
||||
// Create backup
|
||||
bool create_backup(const std::string& original_path);
|
||||
|
||||
// Getters
|
||||
const GCMHeader& header() const { return header_; }
|
||||
GCMHeader& header() { return header_; }
|
||||
size_t size() const { return data_.size(); }
|
||||
|
||||
// Read DOL from ISO
|
||||
DOLFile read_dol() const;
|
||||
|
||||
// Write DOL back to ISO
|
||||
bool write_dol(const DOLFile& dol);
|
||||
|
||||
// Write DOL to new location (end of ISO)
|
||||
bool relocate_dol(const DOLFile& dol);
|
||||
|
||||
// Read arbitrary data
|
||||
std::vector<uint8_t> read(uint32_t offset, uint32_t size) const;
|
||||
|
||||
// Write arbitrary data
|
||||
bool write(uint32_t offset, const std::vector<uint8_t>& data);
|
||||
|
||||
private:
|
||||
GCMHeader header_;
|
||||
std::vector<uint8_t> data_;
|
||||
std::string path_;
|
||||
};
|
||||
|
||||
} // namespace dolhook
|
||||
@@ -0,0 +1,282 @@
|
||||
/**
|
||||
* DolHook ISO Patcher
|
||||
* Injects DolHook runtime into GameCube ISO
|
||||
*/
|
||||
|
||||
#include "gcm.h"
|
||||
#include "dol.h"
|
||||
#include <iostream>
|
||||
#include <fstream>
|
||||
#include <sstream>
|
||||
#include <map>
|
||||
#include <cstring>
|
||||
|
||||
using namespace dolhook;
|
||||
|
||||
struct PatcherConfig {
|
||||
std::string input_iso;
|
||||
std::string output_iso;
|
||||
std::string game_id;
|
||||
int log_level = 1; // 0=errors, 1=info, 2=debug
|
||||
bool dry_run = false;
|
||||
bool print_dol = false;
|
||||
};
|
||||
|
||||
struct SymbolMap {
|
||||
std::map<std::string, uint32_t> symbols;
|
||||
|
||||
bool load(const std::string& path) {
|
||||
std::ifstream file(path);
|
||||
if (!file) return false;
|
||||
|
||||
std::string line;
|
||||
while (std::getline(file, line)) {
|
||||
if (line.empty() || line[0] == '#') continue;
|
||||
|
||||
std::istringstream iss(line);
|
||||
std::string name;
|
||||
uint32_t addr;
|
||||
|
||||
if (iss >> name >> std::hex >> addr) {
|
||||
symbols[name] = addr;
|
||||
}
|
||||
}
|
||||
|
||||
return !symbols.empty();
|
||||
}
|
||||
|
||||
bool has(const std::string& name) const {
|
||||
return symbols.find(name) != symbols.end();
|
||||
}
|
||||
|
||||
uint32_t get(const std::string& name) const {
|
||||
auto it = symbols.find(name);
|
||||
return it != symbols.end() ? it->second : 0;
|
||||
}
|
||||
};
|
||||
|
||||
void print_usage(const char* prog) {
|
||||
std::cout << "DolHook ISO Patcher v1.0\n\n";
|
||||
std::cout << "Usage: " << prog << " INPUT.iso [OPTIONS]\n\n";
|
||||
std::cout << "Options:\n";
|
||||
std::cout << " --out FILE Output ISO path (default: modify input after backup)\n";
|
||||
std::cout << " --id GAMEID Override game ID\n";
|
||||
std::cout << " --log LEVEL Log level: 0=errors, 1=info, 2=debug (default: 1)\n";
|
||||
std::cout << " --dry-run Parse only, don't write\n";
|
||||
std::cout << " --print-dol Display DOL section table\n";
|
||||
std::cout << " --help Show this help\n";
|
||||
}
|
||||
|
||||
bool parse_args(int argc, char** argv, PatcherConfig& cfg) {
|
||||
if (argc < 2) return false;
|
||||
|
||||
cfg.input_iso = argv[1];
|
||||
|
||||
for (int i = 2; i < argc; i++) {
|
||||
std::string arg = argv[i];
|
||||
|
||||
if (arg == "--help") {
|
||||
return false;
|
||||
} else if (arg == "--out" && i + 1 < argc) {
|
||||
cfg.output_iso = argv[++i];
|
||||
} else if (arg == "--id" && i + 1 < argc) {
|
||||
cfg.game_id = argv[++i];
|
||||
} else if (arg == "--log" && i + 1 < argc) {
|
||||
cfg.log_level = std::atoi(argv[++i]);
|
||||
} else if (arg == "--dry-run") {
|
||||
cfg.dry_run = true;
|
||||
} else if (arg == "--print-dol") {
|
||||
cfg.print_dol = true;
|
||||
} else {
|
||||
std::cerr << "Unknown option: " << arg << "\n";
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static void write_be32(uint8_t* p, uint32_t v) {
|
||||
p[0] = (v >> 24) & 0xFF;
|
||||
p[1] = (v >> 16) & 0xFF;
|
||||
p[2] = (v >> 8) & 0xFF;
|
||||
p[3] = v & 0xFF;
|
||||
}
|
||||
|
||||
int main(int argc, char** argv) {
|
||||
PatcherConfig cfg;
|
||||
|
||||
if (!parse_args(argc, argv, cfg)) {
|
||||
print_usage(argv[0]);
|
||||
return 1;
|
||||
}
|
||||
|
||||
// Load ISO
|
||||
if (cfg.log_level >= 1) {
|
||||
std::cout << "Loading ISO: " << cfg.input_iso << "\n";
|
||||
}
|
||||
|
||||
GCMFile iso;
|
||||
if (!iso.load(cfg.input_iso)) {
|
||||
std::cerr << "Error: Failed to load ISO\n";
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (cfg.log_level >= 1) {
|
||||
std::cout << iso.header().format() << "\n";
|
||||
}
|
||||
|
||||
// Read DOL
|
||||
DOLFile dol = iso.read_dol();
|
||||
if (cfg.log_level >= 2 || cfg.print_dol) {
|
||||
std::cout << dol.format_header() << "\n";
|
||||
}
|
||||
|
||||
// Load payload
|
||||
if (cfg.log_level >= 1) {
|
||||
std::cout << "Loading payload...\n";
|
||||
}
|
||||
|
||||
std::ifstream payload_file("payload/payload.bin", std::ios::binary);
|
||||
if (!payload_file) {
|
||||
std::cerr << "Error: payload/payload.bin not found\n";
|
||||
std::cerr << "Build the runtime first with 'make runtime'\n";
|
||||
return 1;
|
||||
}
|
||||
|
||||
payload_file.seekg(0, std::ios::end);
|
||||
size_t payload_size = payload_file.tellg();
|
||||
payload_file.seekg(0, std::ios::beg);
|
||||
|
||||
std::vector<uint8_t> payload(payload_size);
|
||||
payload_file.read(reinterpret_cast<char*>(payload.data()), payload_size);
|
||||
|
||||
if (cfg.log_level >= 1) {
|
||||
std::cout << " Payload size: " << payload_size << " bytes\n";
|
||||
}
|
||||
|
||||
// Load symbol map
|
||||
SymbolMap symbols;
|
||||
if (!symbols.load("payload/payload.sym")) {
|
||||
std::cerr << "Warning: payload.sym not found, using defaults\n";
|
||||
// Set reasonable defaults
|
||||
symbols.symbols["__dolhook_entry"] = 0x80400000;
|
||||
symbols.symbols["__dolhook_original_entry"] = 0x80400100;
|
||||
}
|
||||
|
||||
if (!symbols.has("__dolhook_entry")) {
|
||||
std::cerr << "Error: __dolhook_entry symbol not found\n";
|
||||
return 1;
|
||||
}
|
||||
|
||||
uint32_t hook_entry = symbols.get("__dolhook_entry");
|
||||
uint32_t orig_entry_slot = symbols.get("__dolhook_original_entry");
|
||||
|
||||
if (cfg.log_level >= 2) {
|
||||
std::cout << " Hook entry: 0x" << std::hex << hook_entry << "\n";
|
||||
std::cout << " Original entry slot: 0x" << std::hex << orig_entry_slot << "\n";
|
||||
}
|
||||
|
||||
// Save original entry
|
||||
uint32_t original_entry = dol.header().entry_point;
|
||||
|
||||
if (cfg.log_level >= 1) {
|
||||
std::cout << "\nPatching:\n";
|
||||
std::cout << " Original entry: 0x" << std::hex << original_entry << "\n";
|
||||
std::cout << " New entry: 0x" << std::hex << hook_entry << "\n";
|
||||
}
|
||||
|
||||
// Find offset of __dolhook_original_entry in payload
|
||||
// For simplicity, scan for the placeholder value 0x80003100
|
||||
uint32_t placeholder = 0x80003100;
|
||||
size_t entry_offset = 0;
|
||||
bool found_slot = false;
|
||||
|
||||
for (size_t i = 0; i + 4 <= payload.size(); i += 4) {
|
||||
uint32_t val = (payload[i] << 24) | (payload[i+1] << 16) |
|
||||
(payload[i+2] << 8) | payload[i+3];
|
||||
if (val == placeholder) {
|
||||
entry_offset = i;
|
||||
found_slot = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (!found_slot && cfg.log_level >= 1) {
|
||||
std::cout << " Warning: Placeholder not found, appending entry data\n";
|
||||
entry_offset = payload.size();
|
||||
payload.resize(payload.size() + 4);
|
||||
}
|
||||
|
||||
// Write original entry to payload
|
||||
write_be32(payload.data() + entry_offset, original_entry);
|
||||
|
||||
if (cfg.log_level >= 2) {
|
||||
std::cout << " Wrote original entry at payload offset: 0x"
|
||||
<< std::hex << entry_offset << "\n";
|
||||
}
|
||||
|
||||
if (cfg.dry_run) {
|
||||
std::cout << "\nDry run - no changes written\n";
|
||||
return 0;
|
||||
}
|
||||
|
||||
// Choose load address (after highest existing section)
|
||||
uint32_t load_addr = (dol.header().get_highest_addr() + 0xFF) & ~0xFF;
|
||||
if (load_addr < 0x80400000) load_addr = 0x80400000;
|
||||
|
||||
if (cfg.log_level >= 1) {
|
||||
std::cout << " Loading payload at: 0x" << std::hex << load_addr << "\n";
|
||||
}
|
||||
|
||||
// Inject payload as text section
|
||||
if (!dol.inject_payload(payload, load_addr, true)) {
|
||||
std::cerr << "Error: Failed to inject payload\n";
|
||||
return 1;
|
||||
}
|
||||
|
||||
// Update entry point
|
||||
dol.header().entry_point = hook_entry;
|
||||
|
||||
if (cfg.log_level >= 2) {
|
||||
std::cout << "\nModified DOL:\n" << dol.format_header() << "\n";
|
||||
}
|
||||
|
||||
// Create backup
|
||||
if (cfg.output_iso.empty()) {
|
||||
if (cfg.log_level >= 1) {
|
||||
std::cout << "Creating backup...\n";
|
||||
}
|
||||
iso.create_backup(cfg.input_iso);
|
||||
cfg.output_iso = cfg.input_iso;
|
||||
}
|
||||
|
||||
// Try to write DOL in place first
|
||||
bool wrote_inline = iso.write_dol(dol);
|
||||
|
||||
if (!wrote_inline) {
|
||||
if (cfg.log_level >= 1) {
|
||||
std::cout << "DOL too large, relocating to end of ISO...\n";
|
||||
}
|
||||
iso.relocate_dol(dol);
|
||||
}
|
||||
|
||||
// Write ISO
|
||||
if (cfg.log_level >= 1) {
|
||||
std::cout << "Writing patched ISO: " << cfg.output_iso << "\n";
|
||||
}
|
||||
|
||||
if (!iso.save(cfg.output_iso)) {
|
||||
std::cerr << "Error: Failed to write ISO\n";
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (cfg.log_level >= 1) {
|
||||
std::cout << "\n✓ Patch complete!\n";
|
||||
std::cout << " Original entry: 0x" << std::hex << original_entry << "\n";
|
||||
std::cout << " New entry: 0x" << std::hex << hook_entry << "\n";
|
||||
std::cout << " Payload size: " << std::dec << payload_size << " bytes\n";
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
Reference in New Issue
Block a user