successfully using assembler to generate .hex rather than writing straight machine code

test/Makefile

@@ -13,8 +13,11 @@ LDFLAGS = -T test.ld
 %.o: %.S
 	$(AS) $(ASFLAGS) $^ -o $@
 
+%.o: %.c
+	$(CC) $(CFLAGS) $^ -o $@
+
 %.elf: %.o
 	$(LD) $(LDFLAGS) $^ -o $@
 
 test.hex: test.elf
-	riscv64-linux-gnu-objdump -s $^ | sed -n '/0000/,$$p' | cut -f3-6 -d ' ' | sed -e 's/ /\n/g' > $@
+	riscv64-linux-gnu-objdump -s $^ | sed -n '/0000/,$$p' | cut -f3-6 -d ' ' | sed -e 's/ /\n/g' | sed 's/^\(..\)\(..\)\(..\)\(..\)/\4\3\2\1/' > $@

test/test.S

@@ -33,4 +33,32 @@ add     x29, x0, x0
 add     x30, x0, x0
 add     x31, x0, x0
 
+# nop required because cpu currently does not detect when something is needed from a later stage of the pipeline.
+# 5 clocks allows one instruction to finish before the next starts
+nop
+nop
+nop
+nop
+nop
+addi    x1, x0, 0x12
+nop
+nop
+nop
+nop
+nop
+addi    x2, x0, 0x11
+nop
+nop
+nop
+nop
+nop
+add     x3, x2, x1
+loop:
+nop
+nop
+nop
+nop
+nop
+j       loop
+
 .data