first commit

.gitignore

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+/*.a
+/build
+*.bz2
+release/
+lib/
+CMakeLists.txt
+.idea/
+cmake-build-debug/

Makefile

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+#-------------------------------------------------------------------------------
+.SUFFIXES:
+#-------------------------------------------------------------------------------
+
+ifeq ($(strip $(DEVKITPRO)),)
+$(error "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to>/devkitpro")
+endif
+
+TOPDIR ?= $(CURDIR)
+
+include $(DEVKITPRO)/wut/share/wut_rules
+
+export VER_MAJOR	:=	1
+export VER_MINOR	:=	0
+export VER_PATCH	:=	0
+
+VERSION	:=	$(VER_MAJOR).$(VER_MINOR).$(VER_PATCH)
+
+#-------------------------------------------------------------------------------
+# TARGET is the name of the output
+# BUILD is the directory where object files & intermediate files will be placed
+# SOURCES is a list of directories containing source code
+# DATA is a list of directories containing data files
+# INCLUDES is a list of directories containing header files
+#-------------------------------------------------------------------------------
+TARGET		:=	$(notdir $(CURDIR))
+BUILD		:=	build
+SOURCES		:=	source
+DATA		:=	data
+INCLUDES	:=	source \
+				include \
+
+#---------------------------------------------------------------------------------
+# options for code generation
+#---------------------------------------------------------------------------------
+CFLAGS	:=	-Wall -Werror -save-temps \
+			-ffunction-sections -fdata-sections \
+			$(MACHDEP) \
+			$(BUILD_CFLAGS)
+
+CFLAGS	+=	$(INCLUDE) -D__WIIU__
+
+CXXFLAGS	:= $(CFLAGS) -std=gnu++17
+
+ASFLAGS	:=	$(MACHDEP)
+
+LDFLAGS	=	$(ARCH) -Wl,--gc-sections
+
+
+LIBS	:= 
+
+#---------------------------------------------------------------------------------
+# list of directories containing libraries, this must be the top level containing
+# include and lib
+#---------------------------------------------------------------------------------
+LIBDIRS	:= $(PORTLIBS) $(WUT_ROOT)
+
+#---------------------------------------------------------------------------------
+# no real need to edit anything past this point unless you need to add additional
+# rules for different file extensions
+#---------------------------------------------------------------------------------
+ifneq ($(BUILD),$(notdir $(CURDIR)))
+#---------------------------------------------------------------------------------
+
+export TOPDIR	:=	$(CURDIR)
+
+export VPATH	:=	$(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
+			$(foreach dir,$(DATA),$(CURDIR)/$(dir))
+
+CFILES		:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
+CPPFILES	:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
+SFILES		:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s)))
+DEFFILES	:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.def)))
+BINFILES	:=	$(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*)))
+
+#---------------------------------------------------------------------------------
+# use CXX for linking C++ projects, CC for standard C
+#---------------------------------------------------------------------------------
+ifeq ($(strip $(CPPFILES)),)
+#---------------------------------------------------------------------------------
+	export LD	:=	$(CC)
+#---------------------------------------------------------------------------------
+else
+#---------------------------------------------------------------------------------
+	export LD	:=	$(CXX)
+#---------------------------------------------------------------------------------
+endif
+#---------------------------------------------------------------------------------
+
+export OFILES_BIN	:=	$(addsuffix .o,$(BINFILES))
+export OFILES_SRC	:=	$(DEFFILES:.def=.o) $(SFILES:.s=.o) $(CFILES:.c=.o) $(CPPFILES:.cpp=.o)
+export OFILES 	:=	$(OFILES_BIN) $(OFILES_SRC)
+export HFILES	:=	$(addsuffix .h,$(subst .,_,$(BINFILES)))
+
+export INCLUDE	:=	$(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
+			$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
+			-I. 
+
+.PHONY: all dist-bin dist-src dist install clean
+
+#---------------------------------------------------------------------------------
+all: lib/libmappedmemory.a
+
+dist-bin: all
+	@tar --exclude=*~ -cjf libmappedmemory-$(VERSION).tar.bz2 include lib
+
+dist-src:
+	@tar --exclude=*~ -cjf libmappedmemory-src-$(VERSION).tar.bz2 include source Makefile
+
+dist: dist-src dist-bin
+
+install: dist-bin
+	mkdir -p $(DESTDIR)$(DEVKITPRO)/wums
+	bzip2 -cd libmappedmemory-$(VERSION).tar.bz2 | tar -xf - -C $(DESTDIR)$(DEVKITPRO)/wums
+
+lib:
+	@[ -d $@ ] || mkdir -p $@
+
+release:
+	@[ -d $@ ] || mkdir -p $@
+
+lib/libmappedmemory.a :$(SOURCES) $(INCLUDES) | lib release
+	@$(MAKE) BUILD=release OUTPUT=$(CURDIR)/$@ \
+	BUILD_CFLAGS="-DNDEBUG=1 -O2 -s" \
+	DEPSDIR=$(CURDIR)/release \
+	--no-print-directory -C release \
+	-f $(CURDIR)/Makefile
+
+#---------------------------------------------------------------------------------
+clean:
+	@echo clean ...
+	@rm -rf release lib
+
+#---------------------------------------------------------------------------------
+else
+
+DEPENDS	:=	$(OFILES:.o=.d)
+
+#---------------------------------------------------------------------------------
+# main targets
+#---------------------------------------------------------------------------------
+$(OUTPUT)	:	$(OFILES)
+
+$(OFILES_SRC)	: $(HFILES)
+
+#---------------------------------------------------------------------------------
+%.o: %.def
+	$(SILENTMSG) $(notdir $<)
+	$(SILENTCMD)rplimportgen $< $*.s --forceSingleSection $(ERROR_FILTER)
+	$(SILENTCMD)$(CC) -x assembler-with-cpp $(ASFLAGS) -c $*.s -o $@ $(ERROR_FILTER)
+    
+#---------------------------------------------------------------------------------
+%_bin.h %.bin.o	:	%.bin
+#---------------------------------------------------------------------------------
+	@echo $(notdir $<)
+	@$(bin2o)
+
+
+-include $(DEPENDS)
+
+#---------------------------------------------------------------------------------------
+endif
+#---------------------------------------------------------------------------------------

README.md

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+Requires the [MemoryMappingModule](https://github.com/Maschell/MemoryMappingModule) to be running via [SetupPayload](https://github.com/wiiu-env/SetupPayload).
+Requires [wut](https://github.com/decaf-emu/wut) for building.
+Install via `make install`.

include/memory/mappedmemory.h

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+#pragma once
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <cstdint>
+
+extern void MemoryMappingFree(void* ptr);
+
+extern void* MemoryMappingAlloc(uint32_t size, uint32_t align);
+
+extern uint32_t MemoryMappingEffectiveToPhysical(uint32_t address);
+
+extern uint32_t MemoryMappingPhysicalToEffective(uint32_t address);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif

source/memorymapping.def

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+:NAME homebrew_memorymapping
+
+:TEXT
+MemoryMappingFree
+MemoryMappingAlloc
+MemoryMappingEffectiveToPhysical
+MemoryMappingPhysicalToEffective