diff --git a/hello-world/Makefile b/hello-world/Makefile
index d3ee587..58ec214 100644
--- a/hello-world/Makefile
+++ b/hello-world/Makefile
@@ -2,14 +2,22 @@
 TARGET  = hello
 C_SRCS  = $(wildcard *.c) 
 #HEADERS = $(wildcard *.h)
-#CFLAGS += -O2 
+CFLAGS += -g 
 
 BOARD=freedom-e300-hifive1
 LINK_TARGET=flash
 RISCV_ARCH:=rv32i
 RISCV_ABI:=ilp32
-LDFLAGS := -Wl,--wrap=scanf -Wl,--wrap=printf -march=$(RISCV_ARCH) -mabi=$(RISCV_ABI)
+LDFLAGS := -Wl,--wrap=scanf -Wl,--wrap=printf -march=$(RISCV_ARCH) -mabi=$(RISCV_ABI) -g
+
+#TOOL_DIR?=/opt/shared/riscv/FreedomStudio/20180122/SiFive/riscv64-unknown-elf-gcc-20171231-x86_64-linux-centos6/bin
+TOOL_DIR=/opt/shared/riscv/tools/Ubuntu/riscv64-unknown-elf-gcc-8.3.0-2020.04.1-x86_64-linux-ubuntu14/bin
 
-TOOL_DIR?=/opt/shared/riscv/FreedomStudio/20180122/SiFive/riscv64-unknown-elf-gcc-20171231-x86_64-linux-centos6/bin
 BSP_BASE = ./bsp
 include $(BSP_BASE)/env/common.mk
+
+.PHONY: all
+all: $(TARGET).dump
+
+$(TARGET).dump: $(TARGET)
+	$(TOOL_DIR)/$(TRIPLET)-objdump -d -S -C $< > $@
\ No newline at end of file
diff --git a/hello-world/bsp/env/start.S b/hello-world/bsp/env/start.S
index 4e9f665..1535a78 100644
--- a/hello-world/bsp/env/start.S
+++ b/hello-world/bsp/env/start.S
@@ -75,7 +75,7 @@ _start:
 #else
 	sd ra, 8(sp)
 #endif
-
+        call _init
 	/* argc = argv = 0 */
 	li a0, 0
 	li a1, 0
diff --git a/hello-world/hello b/hello-world/hello
index 0d9c2b2..1ee490e 100755
Binary files a/hello-world/hello and b/hello-world/hello differ
diff --git a/raven_spn/src/spn_data/data_array.py b/raven_spn/src/spn_data/data_array.py
index 7923a2e..a79733b 100755
--- a/raven_spn/src/spn_data/data_array.py
+++ b/raven_spn/src/spn_data/data_array.py
@@ -35,7 +35,8 @@ ref_sample_cnt = len(ref_data.split(","))
 # create cpp file
 f = open("../xspn_data.cpp", "w")
 cpp_file = "#include <array>\n"
-cpp_file += "#include <cmath>\n\n"
+cpp_file += "#include <cmath>\n"
+cpp_file += "#include <bits/stdint-uintn.h>\n\n"
 # The results in the outputdata.txt file are not directly what comes out of the PE but the natural logarithm of it.
 cpp_file += "constexpr auto ln2 = std::log(2);\n"
 cpp_file += "std::array<uint8_t, " + str(input_sample_cnt) + "> input_data = {\n" + str(in_data) + "}; \n\n"