diff --git a/Makefile b/Makefile
index a0991229..d2b9ddb5 100644
--- a/Makefile
+++ b/Makefile
@@ -28,17 +28,10 @@ VERSION_NUM = $(MAJOR_VER_NUM).$(MINOR_VER_NUM).$(PATCH_VER_NUM)
 EXCLUDE_FILES = "libocclum-libos.so.$(MAJOR_VER_NUM)\$$|libocclum-pal.so.$(MAJOR_VER_NUM)\$$|libocclum-pal.so\$$|.a\$$|occlum-protect-integrity.so.*"
 
 SHELL := bash
-
-submodule: githooks
-	git submodule init
-	git submodule update $(OCCLUM_GIT_OPTIONS)
-	@# Try to apply the patches. If failed, check if the patches are already applied
-	cd deps/serde-json-sgx && git apply ../serde-json-sgx.patch >/dev/null 2>&1 || git apply ../serde-json-sgx.patch -R --check
-	cd deps/ringbuf && git apply ../ringbuf.patch >/dev/null 2>&1 || git apply ../ringbuf.patch -R --check
-	cd deps/resolv-conf && git apply ../resolv-conf.patch >/dev/null 2>&1 || git apply ../resolv-conf.patch -R --check
-
+ifneq ($(SGX_MODE), HYPER)
+submodule: githooks init-submodule
+	@rm -rf build
 	@# Enclaves used by tools are running in simulation mode by default to run faster.
-	@rm -rf build build_sim
 	@$(MAKE) SGX_MODE=SIM --no-print-directory -C tools
 	@$(MAKE) --no-print-directory -C deps/sefs/sefs-cli clean
 	@$(MAKE) --no-print-directory -C deps/sefs/sefs-cli no_sign SGX_MODE=HW
@@ -49,9 +42,35 @@ submodule: githooks
 	@cp deps/sefs/sefs-cli/lib/libsefs-cli_sim.so build/lib
 	@cp deps/sefs/sefs-cli/lib/libsefs-cli.signed.so build/lib
 	@cp deps/sefs/sefs-cli/enclave/Enclave.config.xml build/sefs-cli.Enclave.xml
-
 	@# Build and install Occlum dcap lib
 	@cd tools/toolchains/dcap_lib && ./build.sh
+else
+submodule: githooks init-submodule
+	@rm -rf build
+	@# Enclaves used by tools are running in simulation mode by default to run faster.
+	@$(MAKE) SGX_MODE=SIM MS_BUFFER=1 --no-print-directory -C tools
+	@# Apply the sefs-cli's patch for HYPER mode
+	cd deps/sefs && git apply ../sefs-cli_hyper.patch >/dev/null 2>&1 || git apply ../sefs-cli_hyper.patch -R --check
+	@$(MAKE) --no-print-directory -C deps/sefs/sefs-cli clean
+	@$(MAKE) --no-print-directory -C deps/sefs/sefs-cli no_sign SGX_MODE=HYPER
+	@cp deps/sefs/sefs-cli/bin/sefs-cli_hyper build/bin
+	@cp deps/sefs/sefs-cli/lib/libsefs-cli_hyper.so build/lib
+	@# Cleanup the Enclave_u.* and Enclave_t.* generated in HYPER mode
+	@$(MAKE) --no-print-directory -C deps/sefs/sefs-cli clean
+	@$(MAKE) --no-print-directory -C deps/sefs/sefs-cli SGX_MODE=SIM
+	@cp deps/sefs/sefs-cli/bin/sefs-cli_sim build/bin
+	@cp deps/sefs/sefs-cli/lib/libsefs-cli_sim.so build/lib
+	@cp deps/sefs/sefs-cli/lib/libsefs-cli.signed.so build/lib
+	@cp deps/sefs/sefs-cli/enclave/Enclave.config.xml build/sefs-cli.Enclave.xml
+endif
+
+init-submodule:
+	git submodule init
+	git submodule update $(OCCLUM_GIT_OPTIONS)
+	@# Try to apply the patches. If failed, check if the patches are already applied
+	cd deps/serde-json-sgx && git apply ../serde-json-sgx.patch >/dev/null 2>&1 || git apply ../serde-json-sgx.patch -R --check
+	cd deps/ringbuf && git apply ../ringbuf.patch >/dev/null 2>&1 || git apply ../ringbuf.patch -R --check
+	cd deps/resolv-conf && git apply ../resolv-conf.patch >/dev/null 2>&1 || git apply ../resolv-conf.patch -R --check
 
 src:
 	@$(MAKE) --no-print-directory -C src
@@ -63,22 +82,7 @@ test-glibc:
 	@$(MAKE) --no-print-directory -C test test-glibc
 
 OCCLUM_PREFIX ?= /opt/occlum
-install: minimal_sgx_libs
-	@# Install both libraries for HW mode and SIM mode
-	@$(MAKE) SGX_MODE=HW --no-print-directory -C src
-	@$(MAKE) SGX_MODE=SIM --no-print-directory -C src
-
-	@echo "Install libraries ..."
-	@mkdir -p $(OCCLUM_PREFIX)/build/bin/
-	@cp build/bin/* $(OCCLUM_PREFIX)/build/bin
-	@mkdir -p $(OCCLUM_PREFIX)/build/lib/
-	@# Don't copy libos library and pal library symbolic files to install dir
-	@cd build/lib && cp --no-dereference `ls | grep -Ev $(EXCLUDE_FILES)` $(OCCLUM_PREFIX)/build/lib/ && cd -
-	@# Create symbolic for pal library and libos (hardware mode)
-	@cd $(OCCLUM_PREFIX)/build/lib && ln -sf libocclum-pal.so.$(VERSION_NUM) libocclum-pal.so.$(MAJOR_VER_NUM) && \
-		ln -sf libocclum-pal.so.$(MAJOR_VER_NUM) libocclum-pal.so && \
-		ln -sf libocclum-libos.so.$(VERSION_NUM) libocclum-libos.so.$(MAJOR_VER_NUM) && ln -sf libocclum-libos.so.$(MAJOR_VER_NUM) libocclum-libos.so
-
+install: minimal_sgx_libs install_bins_and_libs
 	@echo "Install headers and miscs ..."
 	@mkdir -p $(OCCLUM_PREFIX)/include/
 	@cp -r src/pal/include/*.h $(OCCLUM_PREFIX)/include
@@ -91,7 +95,49 @@ install: minimal_sgx_libs
 
 	@echo "Installation is done."
 
+ifneq ($(SGX_MODE), HYPER)
+install_bins_and_libs:
+	@# Install both libraries for HW mode and SIM mode
+	@$(MAKE) SGX_MODE=HW --no-print-directory -C src
+	@$(MAKE) SGX_MODE=SIM --no-print-directory -C src
+	@echo "Install libraries ..."
+	@mkdir -p $(OCCLUM_PREFIX)/build/bin/
+	@cp build/bin/* $(OCCLUM_PREFIX)/build/bin
+	@mkdir -p $(OCCLUM_PREFIX)/build/lib/
+	@# Don't copy libos library and pal library symbolic files to install dir
+	@cd build/lib && cp --no-dereference `ls | grep -Ev $(EXCLUDE_FILES)` $(OCCLUM_PREFIX)/build/lib/ && cd -
+	@# Create symbolic for pal library and libos (hardware mode)
+	@cd $(OCCLUM_PREFIX)/build/lib && \
+		ln -sf libocclum-pal.so.$(VERSION_NUM) libocclum-pal.so.$(MAJOR_VER_NUM) && \
+		ln -sf libocclum-pal.so.$(MAJOR_VER_NUM) libocclum-pal.so && \
+		ln -sf libocclum-libos.so.$(VERSION_NUM) libocclum-libos.so.$(MAJOR_VER_NUM) && \
+		ln -sf libocclum-libos.so.$(MAJOR_VER_NUM) libocclum-libos.so
+else
+install_bins_and_libs: hyper_mode_libs
+	@# Install both libraries for SIM mode and HYPER mode
+	@# Cleanup the Enclave_u.* and Enclave_t.* generated in HYPER mode
+	@$(MAKE) --no-print-directory -C src clean
+	@$(MAKE) SGX_MODE=SIM --no-print-directory -C src
+	@# Cleanup the Enclave_u.* and Enclave_t.* generated in SIM mode
+	@$(MAKE) --no-print-directory -C src clean
+	@$(MAKE) SGX_MODE=HYPER --no-print-directory -C src
+	@echo "Install libraries ..."
+	@mkdir -p $(OCCLUM_PREFIX)/build/bin/
+	@cp build/bin/* $(OCCLUM_PREFIX)/build/bin
+	@mkdir -p $(OCCLUM_PREFIX)/build/lib/
+	@# Don't copy libos library and pal library symbolic files to install dir
+	@cd build/lib && cp --no-dereference `ls | grep -Ev $(EXCLUDE_FILES)` $(OCCLUM_PREFIX)/build/lib/ && cd -
+	@# Create symbolic for pal library and libos (HYPER mode)
+	@cd $(OCCLUM_PREFIX)/build/lib && \
+		ln -sf libocclum-pal_hyper.so.$(VERSION_NUM) libocclum-pal.so.$(MAJOR_VER_NUM) && \
+		ln -sf libocclum-pal.so.$(MAJOR_VER_NUM) libocclum-pal.so && \
+		ln -sf libocclum-libos_hyper.so.$(VERSION_NUM) libocclum-libos.so.$(MAJOR_VER_NUM) && \
+		ln -sf libocclum-libos.so.$(MAJOR_VER_NUM) libocclum-libos.so
+endif
+
+
 SGX_SDK ?= /opt/intel/sgxsdk
+
 # Install minimum sgx-sdk set to support Occlum cmd execution in non-customized sgx-sdk environment
 minimal_sgx_libs: $(SGX_SDK)/lib64/libsgx_uae_service_sim.so $(SGX_SDK)/lib64/libsgx_quote_ex_sim.so
 	@echo "Install needed sgx-sdk tools ..."
@@ -99,7 +145,7 @@ minimal_sgx_libs: $(SGX_SDK)/lib64/libsgx_uae_service_sim.so $(SGX_SDK)/lib64/li
 	@cp $(SGX_SDK)/lib64/{libsgx_ptrace.so,libsgx_uae_service_sim.so,libsgx_quote_ex_sim.so} $(OCCLUM_PREFIX)/sgxsdk-tools/lib64
 	@mkdir -p $(OCCLUM_PREFIX)/sgxsdk-tools/lib64/gdb-sgx-plugin
 	@cd $(SGX_SDK)/lib64/gdb-sgx-plugin/ && cp $$(ls -A | grep -v __pycache__) $(OCCLUM_PREFIX)/sgxsdk-tools/lib64/gdb-sgx-plugin
-	@cd $(SGX_SDK) && cp -a --parents {bin/sgx-gdb,bin/x64/sgx_sign} $(OCCLUM_PREFIX)/sgxsdk-tools/
+	@cd $(SGX_SDK) && cp -a --parents {bin/sgx-gdb,bin/x64/sgx_sign*} $(OCCLUM_PREFIX)/sgxsdk-tools/
 	@mkdir -p $(OCCLUM_PREFIX)/sgxsdk-tools/sdk_libs && cd $(OCCLUM_PREFIX)/sgxsdk-tools/sdk_libs && \
 		ln -sf ../lib64/libsgx_uae_service_sim.so libsgx_uae_service_sim.so && \
 		ln -sf ../lib64/libsgx_quote_ex_sim.so libsgx_quote_ex_sim.so
@@ -107,6 +153,17 @@ minimal_sgx_libs: $(SGX_SDK)/lib64/libsgx_uae_service_sim.so $(SGX_SDK)/lib64/li
 	@sed -i '/^SGX_LIBRARY_PATH=/d' $(OCCLUM_PREFIX)/sgxsdk-tools/bin/sgx-gdb
 	@cp etc/environment $(OCCLUM_PREFIX)/sgxsdk-tools/
 
+ifeq ($(SGX_MODE), HYPER)
+# Install HYPER mode libs
+hyper_mode_libs: $(SGX_SDK)/lib64/libsgx_uae_service_hyper.so $(SGX_SDK)/lib64/libsgx_quote_ex_hyper.so
+	@echo "Install needed HYPER mode libs ..."
+	@mkdir -p $(OCCLUM_PREFIX)/sgxsdk-tools/lib64
+	@cp $(SGX_SDK)/lib64/{libsgx_uae_service_hyper.so,libsgx_quote_ex_hyper.so} $(OCCLUM_PREFIX)/sgxsdk-tools/lib64
+	@mkdir -p $(OCCLUM_PREFIX)/sgxsdk-tools/sdk_libs && cd $(OCCLUM_PREFIX)/sgxsdk-tools/sdk_libs && \
+		ln -sf ../lib64/libsgx_uae_service_hyper.so libsgx_uae_service_hyper.so && \
+		ln -sf ../lib64/libsgx_quote_ex_hyper.so libsgx_quote_ex_hyper.so
+endif
+
 format:
 	@$(MAKE) --no-print-directory -C test format
 	@$(MAKE) --no-print-directory -C tools format
diff --git a/src/libos/Cargo.toml b/src/libos/Cargo.toml
index 9efc74f4..9af551a2 100644
--- a/src/libos/Cargo.toml
+++ b/src/libos/Cargo.toml
@@ -41,6 +41,7 @@ sgx_file_cache = []     # Cache SgxFile objects. Invalidation is unimplemented.
 sgx1_exception_sim = [] # Simulate #PF and #GP exceptions on SGX 1
 dcap = []               # DCAP support. The compilation relies on DCAP package.
 cov = ["sgx_cov"]       # Enable coverage colletcion.
+hyper_mode = []         # For running in hyper mode.
 
 [target.'cfg(not(target_env = "sgx"))'.dependencies]
 sgx_types = { path = "../../deps/rust-sgx-sdk/sgx_types" }
diff --git a/src/libos/Enclave.lds b/src/libos/Enclave.lds
index 0d5614f5..543ec186 100644
--- a/src/libos/Enclave.lds
+++ b/src/libos/Enclave.lds
@@ -2,6 +2,7 @@ enclave.so
 {
     global:
         g_global_data_sim;
+        g_global_data_hyper;
         g_global_data;
         enclave_entry;
         g_peak_heap_used;
diff --git a/src/libos/Makefile b/src/libos/Makefile
index 81d11125..4c63a41b 100644
--- a/src/libos/Makefile
+++ b/src/libos/Makefile
@@ -45,12 +45,15 @@ LIBOS_LOG ?= error
 
 LIBOS_SONAME := libocclum-libos.so.$(MAJOR_VER_NUM)
 
-ifneq ($(SGX_MODE), HW)
-	LIBOS_CORE_LIB_NAME := occlum-libos-core_sim
-	LIBOS_SO_REAL := $(BUILD_DIR)/lib/libocclum-libos_sim.so.$(VERSION_NUM)
-else
+ifeq ($(SGX_MODE), HW)
 	LIBOS_CORE_LIB_NAME := occlum-libos-core
 	LIBOS_SO_REAL := $(BUILD_DIR)/lib/libocclum-libos.so.$(VERSION_NUM)
+else ifeq ($(SGX_MODE), HYPER)
+	LIBOS_CORE_LIB_NAME := occlum-libos-core_hyper
+	LIBOS_SO_REAL := $(BUILD_DIR)/lib/libocclum-libos_hyper.so.$(VERSION_NUM)
+else
+	LIBOS_CORE_LIB_NAME := occlum-libos-core_sim
+	LIBOS_SO_REAL := $(BUILD_DIR)/lib/libocclum-libos_sim.so.$(VERSION_NUM)
 endif
 
 LIBOS_CORE_A := $(OBJ_DIR)/libos/lib/lib$(LIBOS_CORE_LIB_NAME).a
@@ -70,10 +73,14 @@ CXX_OBJS := $(addprefix $(OBJ_DIR)/libos/,$(CXX_SRCS:.cpp=.o))
 S_OBJS := $(addprefix $(OBJ_DIR)/libos/,$(S_SRCS:.S=.o))
 
 # Object files for simulation mode are stored in libos/src_sim
-ifneq ($(SGX_MODE), HW)
+ifeq ($(SGX_MODE), SIM)
 	C_OBJS := $(subst libos/src,libos/src_sim,$(C_OBJS))
 	CXX_OBJS := $(subst libos/src,libos/src_sim,$(CXX_OBJS))
 	S_OBJS := $(subst libos/src,libos/src_sim,$(S_OBJS))
+else ifeq ($(SGX_MODE), HYPER)
+	C_OBJS := $(subst libos/src,libos/src_hyper,$(C_OBJS))
+	CXX_OBJS := $(subst libos/src,libos/src_hyper,$(CXX_OBJS))
+	S_OBJS := $(subst libos/src,libos/src_hyper,$(S_OBJS))
 endif
 
 ALL_BUILD_SUBDIRS := $(sort $(patsubst %/,%,$(dir $(LIBOS_SO_REAL) $(EDL_C_OBJS) $(C_OBJS) $(CXX_OBJS) $(S_OBJS)) $(RUST_TARGET_DIR) $(RUST_OUT_DIR)))
@@ -127,6 +134,10 @@ ifneq ($(OCCLUM_COV),)
         -Coverflow-checks=off -Cpanic=abort"
 endif
 
+ifeq ($(SGX_MODE), HYPER)
+    LIBOS_FEATURES += hyper_mode
+endif
+
 # Release build is for production use. We enable code coverage only for debug
 # build.  It also simplifies the implementation as the release and debug build
 # have different output paths.
@@ -149,7 +160,7 @@ $(OBJ_DIR)/libos/$(SRC_OBJ)/Enclave_t.o: $(OBJ_DIR)/libos/$(SRC_OBJ)/Enclave_t.c
 	@echo "CC <= $@"
 
 $(OBJ_DIR)/libos/$(SRC_OBJ)/Enclave_t.c: $(SGX_EDGER8R) ../Enclave.edl
-	@cd $(OBJ_DIR)/libos/$(SRC_OBJ) && $(SGX_EDGER8R) --trusted $(CUR_DIR)/../Enclave.edl --search-path $(SGX_SDK)/include --search-path $(RUST_SGX_SDK_DIR)/edl
+	@cd $(OBJ_DIR)/libos/$(SRC_OBJ) && $(SGX_EDGER8R) $(SGX_EDGER8R_MODE) --trusted $(CUR_DIR)/../Enclave.edl --search-path $(SGX_SDK)/include --search-path $(RUST_SGX_SDK_DIR)/edl
 	@echo "GEN <= $@"
 
 $(C_OBJS):$(OBJ_DIR)/libos/$(SRC_OBJ)/%.o: src/%.c
diff --git a/src/pal/Makefile b/src/pal/Makefile
index 6c5890ce..8f91fd50 100644
--- a/src/pal/Makefile
+++ b/src/pal/Makefile
@@ -3,10 +3,12 @@ include ../sgxenv.mk
 LIBOCCLUM_PAL_SO := $(BUILD_DIR)/lib/libocclum-pal.so
 LIBOCCLUM_PAL_SONAME := libocclum-pal.so.$(MAJOR_VER_NUM)
 
-ifneq ($(SGX_MODE), HW)
-	LIBOCCLUM_PAL_SO_REAL := $(BUILD_DIR)/lib/libocclum-pal_sim.so.$(VERSION_NUM)
-else
+ifeq ($(SGX_MODE), HW)
 	LIBOCCLUM_PAL_SO_REAL := $(BUILD_DIR)/lib/libocclum-pal.so.$(VERSION_NUM)
+else ifeq ($(SGX_MODE), HYPER)
+	LIBOCCLUM_PAL_SO_REAL := $(BUILD_DIR)/lib/libocclum-pal_hyper.so.$(VERSION_NUM)
+else
+	LIBOCCLUM_PAL_SO_REAL := $(BUILD_DIR)/lib/libocclum-pal_sim.so.$(VERSION_NUM)
 endif
 
 # A dependency on Rust SGX SDK
@@ -19,10 +21,13 @@ CXX_SRCS := $(sort $(wildcard src/*.cpp src/*/*.cpp))
 C_OBJS := $(addprefix $(OBJ_DIR)/pal/,$(C_SRCS:.c=.o))
 CXX_OBJS := $(addprefix $(OBJ_DIR)/pal/,$(CXX_SRCS:.cpp=.o))
 
-# Object files for simulation mode are stored in libos/src_sim
-ifneq ($(SGX_MODE), HW)
+# Object files for simulation mode are stored in pal/src_sim
+ifeq ($(SGX_MODE), SIM)
 	C_OBJS := $(subst pal/src,pal/src_sim,$(C_OBJS))
 	CXX_OBJS := $(subst pal/src,pal/src_sim,$(CXX_OBJS))
+else ifeq ($(SGX_MODE), HYPER)
+	C_OBJS := $(subst pal/src,pal/src_hyper,$(C_OBJS))
+	CXX_OBJS := $(subst pal/src,pal/src_hyper,$(CXX_OBJS))
 endif
 
 HEADER_FILES := $(sort $(wildcard src/*.h include/*.h include/*/*.h))
@@ -37,10 +42,12 @@ LINK_FLAGS := $(SGX_LFLAGS_U) -shared -L$(RUST_SGX_SDK_DIR)/sgx_ustdc/ -lsgx_ust
 LINK_FLAGS += -Wl,--version-script=pal.lds
 ifndef OCCLUM_DISABLE_DCAP
 LINK_FLAGS += -lsgx_dcap_ql -lsgx_dcap_quoteverify
-ifneq ($(SGX_MODE), HW)
-LINK_FLAGS += -lsgx_quote_ex_sim
-else
+ifeq ($(SGX_MODE), HW)
 LINK_FLAGS += -lsgx_quote_ex
+else ifeq ($(SGX_MODE), HYPER)
+LINK_FLAGS += -lsgx_quote_ex_hyper
+else
+LINK_FLAGS += -lsgx_quote_ex_sim
 endif
 endif
 
@@ -66,7 +73,7 @@ $(OBJ_DIR)/pal/$(SRC_OBJ)/Enclave_u.o: $(OBJ_DIR)/pal/$(SRC_OBJ)/Enclave_u.c
 
 $(OBJ_DIR)/pal/$(SRC_OBJ)/Enclave_u.c: $(SGX_EDGER8R) ../Enclave.edl
 	@cd $(OBJ_DIR)/pal/$(SRC_OBJ) && \
-		$(SGX_EDGER8R) --untrusted $(CUR_DIR)/../Enclave.edl \
+		$(SGX_EDGER8R) $(SGX_EDGER8R_MODE) --untrusted $(CUR_DIR)/../Enclave.edl \
 		--search-path $(SGX_SDK)/include \
 		--search-path $(RUST_SGX_SDK_DIR)/edl/
 	@echo "GEN <= $@"
diff --git a/src/sgxenv.mk b/src/sgxenv.mk
index 60c925ea..afa17797 100644
--- a/src/sgxenv.mk
+++ b/src/sgxenv.mk
@@ -27,10 +27,12 @@ NO_COLOR := \033[0m
 
 # Save code and object file generated during building src
 OBJ_DIR := $(PROJECT_DIR)/build/internal/src
-ifneq ($(SGX_MODE), HW)
-	SRC_OBJ := src_sim
-else
+ifeq ($(SGX_MODE), HW)
 	SRC_OBJ := src
+else ifeq ($(SGX_MODE), HYPER)
+	SRC_OBJ := src_hyper
+else
+	SRC_OBJ := src_sim
 endif
 
 BUILD_DIR := $(PROJECT_DIR)/build
@@ -54,13 +56,19 @@ SGX_COMMON_CFLAGS := -Wall -std=gnu11
 ifeq ($(SGX_ARCH), x86)
 	SGX_COMMON_CFLAGS += -m32
 	SGX_LIBRARY_PATH := $(SGX_SDK)/lib
-	SGX_ENCLAVE_SIGNER := $(SGX_SDK)/bin/x86/sgx_sign
-	SGX_EDGER8R := $(SGX_SDK)/bin/x86/sgx_edger8r
+	SGX_BIN_PATH := $(SGX_SDK)/bin/x86
 else
 	SGX_COMMON_CFLAGS += -m64
 	SGX_LIBRARY_PATH := $(SGX_SDK)/lib64
-	SGX_ENCLAVE_SIGNER := $(SGX_SDK)/bin/x64/sgx_sign
-	SGX_EDGER8R := $(SGX_SDK)/bin/x64/sgx_edger8r
+	SGX_BIN_PATH := $(SGX_SDK)/bin/x64
+endif
+
+SGX_EDGER8R := $(SGX_BIN_PATH)/sgx_edger8r
+ifneq ($(SGX_MODE), HYPER)
+	SGX_ENCLAVE_SIGNER := $(SGX_BIN_PATH)/sgx_sign
+else
+	SGX_ENCLAVE_SIGNER := $(SGX_BIN_PATH)/sgx_sign_hyper
+	SGX_EDGER8R_MODE := --sgx-mode $(SGX_MODE)
 endif
 
 ifeq ($(OCCLUM_RELEASE_BUILD), 1)
@@ -71,18 +79,23 @@ endif
 
 RUST_SGX_SDK_DIR := $(PROJECT_DIR)/deps/rust-sgx-sdk
 
-ifneq ($(SGX_MODE), HW)
-	SGX_COMMON_CFLAGS += -D SGX_MODE_SIM
-else
+ifeq ($(SGX_MODE), HW)
 	SGX_COMMON_CFLAGS += -D SGX_MODE_HW
+else ifeq ($(SGX_MODE), HYPER)
+	SGX_COMMON_CFLAGS += -D SGX_MODE_HYPER
+else
+	SGX_COMMON_CFLAGS += -D SGX_MODE_SIM
 endif
 
-ifneq ($(SGX_MODE), HW)
-	Trts_Library_Name := sgx_trts_sim
-	Service_Library_Name := sgx_tservice_sim
-else
+ifeq ($(SGX_MODE), HW)
 	Trts_Library_Name := sgx_trts
 	Service_Library_Name := sgx_tservice
+else ifeq ($(SGX_MODE), HYPER)
+	Trts_Library_Name := sgx_trts_hyper
+	Service_Library_Name := sgx_tservice_hyper
+else
+	Trts_Library_Name := sgx_trts_sim
+	Service_Library_Name := sgx_tservice_sim
 endif
 Crypto_Library_Name := sgx_tcrypto
 KeyExchange_Library_Name := sgx_tkey_exchange
@@ -95,10 +108,12 @@ SGX_CFLAGS_U := $(SGX_COMMON_CFLAGS) -fPIC -Wno-attributes \
 	-I$(RUST_SGX_SDK_DIR)/edl -I$(SGX_SDK)/include
 SGX_CXXFLAGS_U := $(SGX_CFLAGS_U) -std=c++11
 
-ifneq ($(SGX_MODE), HW)
-	SGX_LFLAGS_U := $(SGX_COMMON_CFLAGS) -lpthread -L$(SGX_LIBRARY_PATH) -Wl,-Bstatic -lsgx_urts_sim -Wl,-Bdynamic -lsgx_uae_service_sim
-else
+ifeq ($(SGX_MODE), HW)
 	SGX_LFLAGS_U := $(SGX_COMMON_CFLAGS) -lpthread -L$(SGX_LIBRARY_PATH) -Wl,-Bstatic -lsgx_urts -Wl,-Bdynamic -lsgx_uae_service -lsgx_enclave_common
+else ifeq ($(SGX_MODE), HYPER)
+	SGX_LFLAGS_U := $(SGX_COMMON_CFLAGS) -lpthread -L$(SGX_LIBRARY_PATH) -Wl,-Bstatic -lsgx_urts_hyper -Wl,-Bdynamic -lsgx_uae_service_hyper
+else
+	SGX_LFLAGS_U := $(SGX_COMMON_CFLAGS) -lpthread -L$(SGX_LIBRARY_PATH) -Wl,-Bstatic -lsgx_urts_sim -Wl,-Bdynamic -lsgx_uae_service_sim
 endif
 
 #
diff --git a/test/test_common.mk b/test/test_common.mk
index db7e4bc3..9876f3b7 100644
--- a/test/test_common.mk
+++ b/test/test_common.mk
@@ -26,12 +26,12 @@ else
 endif
 
 C_FLAGS = -Wall -Wno-return-local-addr -I../include -O2 -fPIC $(EXTRA_C_FLAGS)
-ifeq ($(SGX_MODE), SIM)
-	C_FLAGS += -D SGX_MODE_SIM
-else ifeq ($(SGX_MODE), SW)
-	C_FLAGS += -D SGX_MODE_SIM
-else
+ifeq ($(SGX_MODE), HW)
 	C_FLAGS += -D SGX_MODE_HW
+else ifeq ($(SGX_MODE), HYPER)
+	C_FLAGS += -D SGX_MODE_HYPER
+else
+	C_FLAGS += -D SGX_MODE_SIM
 endif
 LINK_FLAGS = $(C_FLAGS) -pie $(EXTRA_LINK_FLAGS)
 
diff --git a/tools/occlum b/tools/occlum
index dae52dbe..bd3a4580 100755
--- a/tools/occlum
+++ b/tools/occlum
@@ -28,7 +28,11 @@ status_file=$instance_dir/.__occlum_status
 if [ -f "$occlum_sgx_env" ]; then
     source $occlum_sgx_env
     SGX_GDB="$SGX_SDK/bin/sgx-gdb"
-    ENCLAVE_SIGN_TOOL="$SGX_SDK/bin/x64/sgx_sign"
+    if [[ -n $SGX_MODE && "$SGX_MODE" == "HYPER" ]]; then
+        ENCLAVE_SIGN_TOOL="$SGX_SDK/bin/x64/sgx_sign_hyper"
+    else
+        ENCLAVE_SIGN_TOOL="$SGX_SDK/bin/x64/sgx_sign"
+    fi
     ENCLAVE_SIGN_KEY="$occlum_dir/etc/template/Enclave.pem"
 fi
 
@@ -252,7 +256,7 @@ cmd_build() {
         case "$1" in
         --sign-key)     [ -n "$2" ] && ENCLAVE_SIGN_KEY=$2 ; shift 2 || exit_error "empty signing key path"     ;;
         --sign-tool)    [ -n "$2" ] && ENCLAVE_SIGN_TOOL=$2 ; shift 2 || exit_error "empty signing tool path"   ;;
-        --sgx-mode)     [[ -n "$2" && "$2" != "HW" ]] && export SGX_MODE=SIM ; shift 2 || exit_error "empty sgx mode";;
+        --sgx-mode)     [[ -n "$2" && "$2" != "HW" ]] && export SGX_MODE=$2 ; shift 2 || exit_error "empty sgx mode";;
         --image-key)    [ -n "$2" ] && SECURE_IMAGE_KEY=$2 ; shift 2 || exit_error "empty secure image key path"   ;;
         --buildin-image-key)  BUILDIN_IMAGE_KEY=true ; shift ;;
         --force | -f)   MAKE_OPTION="clean" ; shift ;;
@@ -270,8 +274,13 @@ cmd_build() {
 
     if [[ -n $SGX_MODE && "$SGX_MODE" != "HW" ]]; then
         export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$SGX_SDK/sdk_libs
-        pal_lib=libocclum-pal_sim.so
-        libos_lib=libocclum-libos_sim.so
+        if [[ "$SGX_MODE" != "HYPER" ]]; then
+            pal_lib=libocclum-pal_sim.so
+            libos_lib=libocclum-libos_sim.so
+        else
+            pal_lib=libocclum-pal_hyper.so
+            libos_lib=libocclum-libos_hyper.so
+        fi
         echo "SGX mode: $SGX_MODE"
     else
         echo "SGX mode: HW"
@@ -279,7 +288,7 @@ cmd_build() {
 
     # If sgx mode is changed, build thoroughly again
     if [[ -n $SGX_MODE && "$SGX_MODE" != "HW" ]]; then
-        if [ "$(cat $instance_dir/.sgx_mode 2>/dev/null)" != "SIM" ]; then
+        if [ "$(cat $instance_dir/.sgx_mode 2>/dev/null)" != "$SGX_MODE" ]; then
             MAKE_OPTION="clean"
         fi
     else
@@ -304,7 +313,7 @@ cmd_build() {
     echo "built" > $status_file
 
     if [[ -n $SGX_MODE && "$SGX_MODE" != "HW" ]]; then
-        echo "SIM" > .sgx_mode
+        echo "$SGX_MODE" > .sgx_mode
     else
         echo "HW" > .sgx_mode
     fi
@@ -520,8 +529,13 @@ cmd_mount() {
 
     SGX_MODE=$(cat $instance_dir/.sgx_mode)
     if [[ -n $SGX_MODE && "$SGX_MODE" != "HW" ]]; then
-        sefs_cli="$occlum_dir/build/bin/sefs-cli_sim"
-        sefs_cli_lib="$occlum_dir/build/lib/libsefs-cli_sim.so"
+        if [[ "$SGX_MODE" != "HYPER" ]]; then
+            sefs_cli="$occlum_dir/build/bin/sefs-cli_sim"
+            sefs_cli_lib="$occlum_dir/build/lib/libsefs-cli_sim.so"
+        else
+            sefs_cli="$occlum_dir/build/bin/sefs-cli_hyper"
+            sefs_cli_lib="$occlum_dir/build/lib/libsefs-cli_hyper.so"
+        fi
         echo "SGX mode: $SGX_MODE"
     else
         sefs_cli="$occlum_dir/build/bin/sefs-cli"