diff --git a/build/platform.simulator.3ds.mak b/build/platform.simulator.3ds.mak
new file mode 100644
index 000000000..d8d158a7d
--- /dev/null
+++ b/build/platform.simulator.3ds.mak
@@ -0,0 +1,2 @@
+TOOLCHAIN = devkitarm
+EXE = elf
diff --git a/build/toolchain.devkitarm.mak b/build/toolchain.devkitarm.mak
new file mode 100644
index 000000000..7c03f3a4f
--- /dev/null
+++ b/build/toolchain.devkitarm.mak
@@ -0,0 +1,70 @@
+
+ifeq ($(strip $(DEVKITARM)),)
+$(error "Please set DEVKITARM in your environment. export DEVKITARM=<path to>devkitARM")
+endif
+
+ifeq ($(strip $(DEVKITPRO)),)
+$(error "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to>devkitPro)
+endif
+
+DEVKITPATH=$(shell echo "$(DEVKITPRO)" | sed -e 's/^\([a-zA-Z]\):/\/\1/')
+
+PREFIX = $(DEVKITPATH)/devkitARM/bin/arm-none-eabi-
+
+CC = $(PREFIX)gcc
+CXX = $(PREFIX)g++
+LD = $(CXX)
+GDB = $(PREFIX)gdb
+OBJCOPY = $(PREFIX)objcopy
+SIZE = $(PREFIX)size
+
+
+ARCH = -march=armv6k -mtune=mpcore -mfloat-abi=hard -mtp=soft
+
+CFLAGS = -g -Wall -O2 -mword-relocations \
+         -ffunction-sections \
+         $(ARCH)
+
+
+LIBDIRS	:= $(DEVKITPRO)/libctru
+
+INCLUDE	= $(foreach dir,$(LIBDIRS),-I$(dir)/include) \
+          -I$(CURDIR)/$(BUILD)
+
+CFLAGS += $(INCLUDE) -DARM11 -D_3DS
+
+CXXFLAGS = $(CFLAGS) -fno-rtti -fno-exceptions -std=gnu++11
+
+ASFLAGS = -g $(ARCH)
+LDFLAGS = -specs=3dsx.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map)
+
+LIBS = -lctru -lm
+
+
+# Always generate debug information
+SFLAGS += -ggdb3
+
+# Put data/code symbols in their own subsection
+# This allows the linker script to precisely place a given symbol
+SFLAGS += -fdata-sections -ffunction-sections
+
+ifeq ($(DEBUG),1)
+LTO ?= 0
+else
+LTO ?= 1
+endif
+
+ifeq ($(LTO),1)
+# Use link-time optimization if LTO=1
+SFLAGS += -flto
+endif
+
+# Get rid of unused symbols. This is also useful even if LTO=1.
+LDFLAGS += -Wl,--gc-sections
+
+LIBPATHS	:=	$(foreach dir,$(LIBDIRS),-L$(dir)/lib)
+
+LDFLAGS += $(SFLAGS) $(LIBPATHS) $(LIBS) -lgcc
+
+# To debug linker scripts, add the following line
+# LDFLAGS += -Wl,-M
diff --git a/ion/src/simulator/3ds/Makefile b/ion/src/simulator/3ds/Makefile
new file mode 100644
index 000000000..7a87a2857
--- /dev/null
+++ b/ion/src/simulator/3ds/Makefile
@@ -0,0 +1,4 @@
+
+ion_src += $(addprefix ion/src/simulator/3ds/, \
+  main.cpp \
+)
diff --git a/ion/src/simulator/3ds/main.cpp b/ion/src/simulator/3ds/main.cpp
new file mode 100644
index 000000000..bfcb5c65e
--- /dev/null
+++ b/ion/src/simulator/3ds/main.cpp
@@ -0,0 +1,28 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <3ds.h>
+
+int main(int argc, char * argv[]) {
+	gfxInitDefault();
+	consoleInit(GFX_TOP, NULL);
+
+	printf("Hello, world!\n");
+
+	// Main loop
+	while (aptMainLoop())
+	{
+		gspWaitForVBlank();
+		gfxSwapBuffers();
+		hidScanInput();
+
+		// Your code goes here
+		u32 kDown = hidKeysDown();
+		if (kDown & KEY_START)
+			break; // break in order to return to hbmenu
+	}
+
+	gfxExit();
+	return 0;
+}
+
diff --git a/ion/src/simulator/external/config.3ds.mak b/ion/src/simulator/external/config.3ds.mak
new file mode 100644
index 000000000..3feb8e7ed
--- /dev/null
+++ b/ion/src/simulator/external/config.3ds.mak
@@ -0,0 +1,4 @@
+
+undefine sdl_src
+undefine ion_simulator_sdl_src
+
diff --git a/poincare/include/poincare/integer.h b/poincare/include/poincare/integer.h
index 181193a75..63577e369 100644
--- a/poincare/include/poincare/integer.h
+++ b/poincare/include/poincare/integer.h
@@ -13,11 +13,11 @@ class LayoutNode;
 class Integer;
 struct IntegerDivision;
 
-typedef uint16_t half_native_uint_t;
-typedef int32_t native_int_t;
-typedef int64_t double_native_int_t;
-typedef uint32_t native_uint_t;
-typedef uint64_t double_native_uint_t;
+typedef unsigned short half_native_uint_t;
+typedef int native_int_t;
+typedef long long int double_native_int_t;
+typedef unsigned int native_uint_t;
+typedef unsigned long long int double_native_uint_t;
 
 static_assert(sizeof(double_native_int_t) <= sizeof(double_native_uint_t), "double_native_int_t type has not the right size compared to double_native_uint_t");
 static_assert(sizeof(native_int_t) == sizeof(native_uint_t), "native_int_t type has not the right size compared to native_uint_t");