/* compute abs address of label finish */
    leaq  finish(%rip), %rcx
    /* save address of finish as return-address for context-function */
    /* will be entered after context-function returns */
    movq  %rcx, 0x40(%rax)

    ret /* return pointer to context-data */

finish:
    /* exit code is zero */
    xorq  %rdi, %rdi
    /* exit application */
    call  _exit@PLT
    hlt

lea eax, msg