.global main, Stop, CodeEnd, DataStart, DataEnd

	.global head, ptr

main:
	/* -------------------------------------
 	   ptr.next = head;
	   -------------------------------------- */
	// Get the value in the LHS
	movw 	r0, #:lower16:head
	movt 	r0, #:upper16:head	// r0 = addr(head)
	ldr	r0, [r0]		// r0 = head

	// Get the ADDRESS in the RHS
	movw 	r1, #:lower16:ptr
	movt 	r1, #:upper16:ptr	// r1 = addr(ptr)
	ldr	r1, [r1]		// r1 = ptr
					// Note: Addr(RHS) = r1+4

	// Store the LHS in the addr of RHS
	str	r0, [r1, #4]


	/* -------------------------------------
 	   head = ptr;
	   -------------------------------------- */
	// Get the value in the LHS
	movw 	r0, #:lower16:ptr
	movt 	r0, #:upper16:ptr	// r0 = addr(ptr)
	ldr	r0, [r0]		// r0 = ptr

        // Get the ADDRESS in the RHS
        movw    r1, #:lower16:head
        movt    r1, #:upper16:head      // r1 = addr(head)
                                        // Addr(RHS) = r1

	// Store the LHS in the addr of RHS
	str	r0, [r1]


Stop:
    	nop
CodeEnd:


/* **************************************************************
   Permanent variables
   ************************************************************** */

	.data
DataStart:

head:   .word p0	// head contains the address of the first list elem
			// head->[11]->[22]->[33]->[44]->[55]

ptr:	.word p9

// list structure is: [int value, next]
p0: .4byte  11, p3	// p0 contains [11, p3]
p1: .4byte  33, p2	// p1 contains [33, p2]
p2: .4byte  44, p4	// p2 contains [44, p4]
p3: .4byte  22, p1	// p3 contains [22, p1]
p4: .4byte  55, 0	// p4 contains [55, 0]

p9: .4byte  99, 0	// p9 contains [99, 0]

DataEnd:
	.end