;; nasm -f elf64 s.asm ; ld s.o -o s

;; %define SHOTS      0xe8d4a51000 ; 1e12

%define SHOTS      0x174876e800 ; 1e11

%define SHIFTNESS  0
;; %define SHIFTNESS  1

global  _start
_start:

        xor     rbx, rbx

        mov     rdi, SHOTS
        mov     rcx, SHIFTNESS

_cycle:

        mov     rax, rdi
        shr     rax, cl
        xor     rbx, rax ; nuke pipeline

        mov     rax, rdi
        shl     rax, cl
        xor     rbx, rax ; nuke pipeline

        dec     rdi
        jnz     _cycle

_exit:
        mov     rax, 60 ; SYS_EXIT
        mov     rdi, 0  ; exit code
        syscall