bulk: changing experiments structure and how i use it.

machine/riscv-asm/main.s

@@ -0,0 +1,19 @@
+.global _start
+
+_start:
+	addi a7, x0, 64 	# syscall write
+	addi a0, x0, 1  	# stdout fd
+	la a1, str_helloworld 	# load label into reg: a1
+	addi a2, x0, 13 	# length of string
+	ecall			# call kernel
+
+	beqz x0, _exit		# branch if = to zero
+
+_exit:
+	addi a7, x0, 93 	# syscall exit
+	addi a0, x0, 0  	# exit code
+	ecall			# call kernel
+	
+
+str_helloworld:
+	.ascii "Hello World!\n"