#if defined(__APPLE__) .global _main // Provide program starting address to linker Mac OS _main: #else .global main // Raspian and Linux main: #endif // stack frame work setup START stp x29, x30, [sp, -16]! str x20, [sp, -16]! mov x29, sp // stack frame work setup END // setup printf call #if defined(__APPLE__) adrp x0, fOutputStr@PAGE add x0, x0, fOutputStr@PAGEOFF #else ldr x0, =fOutputStr #endif mov w1, #4 mov w2, #9 print_brk: #if defined(__APPLE__) stp X0, X1, [SP, #-16]! stp X2, X3, [SP, #-16]! bl _printf ldp X2, X3, [SP], #16 ldp X0, X1, [SP], #16 #else bl printf #endif done: // closing stack frame work ldr x20, [sp],16 ldp x29, x30, [sp],16 // exit mov w0, wzr ret .data .align 4 // intArrayPtr: .word 3,7,5,2,4,8 // word, each value is offset by 4 fOutputStr: .asciz "Element[%d] = %d\n" // formated output string

Thank you! Just figured this out. Much appreciated!!!!! This was my solution, mov w2, w20 // Prepare printf arguments // x0 = format string. x0 // w1 = i w20 // w2 = element i w1 #if defined(__APPLE__) // Apple Silicon store decimals stp X2, X1 , [SP, #-16]! bl _printf ldp X2, X1, [SP], #16 #else bl printf #endif Here is the desired output. ❯ ./a.out Through all my reading, Linux and Pi pass through registers and Apple Silicon pass on the stack (reverse order). Are there Apple Docs on this somewhere?

Here is the sample output from the terminal on Mac OS. Thank you, Albert!!!! Element[4] = 9