/* ========================================================================
   Demo file used to teach linked list access
   ======================================================================== */
	.global main, Stop, CodeEnd, DataStart, DataEnd
	.global head		// "head"  points to the first element in list

/* ========================================================================
   I have created this linked list at the end of the file (in data seg):

   List head->[11]->[22]->[33]->[44]->[55]

   class List {
      List next;     // Offset = 4
      int value;     // Offset = 0
   }
   ======================================================================== */

main:
	// Load the value in variable head.value into r10
	// Load the value in variable head.next.value into r10
	// Load the value in variable head.next.next.value into r10

	// get head.next.value into r1

	movw	r0, #:lower16:head
	movt	r0, #:upper16:head
	ldr	r0, [r0]		// r0 = base addr of 1st elem

	ldr	r0,[r0,#0]		// r0 = base adr of 2nd elem

	ldr	r1,[r0,#4]

Stop:
    	nop
CodeEnd:


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

	.data
DataStart:

head:   .4byte p0	// head contains the address of the first list elem
			// head->[11]->[22]->[33]->[44]->[55]

// list structure is: [int value, next]
p0: .4byte  11, p3	// p0 contains [11, p3]
    .skip   8		// *** Gap
p1: .4byte  33, p2	// p1 contains [33, p2]
p2: .4byte  44, p4	// p2 contains [44, p2]
    .skip   16		// *** Gap
p3: .4byte  22, p1	// p3 contains [22, p2]
    .skip   8		// *** Gap
p4: .4byte  55, 0	// p4 contains [55, p2]

DataEnd:
	.end