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# Execution begins at address 0
    .pos 0
    irmovq stack, %rsp      # Set up stack pointer
    call main       # Execute main program
    halt            # Terminate program

f0:
        irmovq $0x10, %rax
        ret
f1:
        irmovq $0x11, %rax
        ret
f2:
        irmovq $0x12, %rax
        ret
f3:
        irmovq $0x13, %rax
        ret
f4:
        irmovq $0x14, %rax
        ret

jtable:
    .quad f0
    .quad f1
    .quad f2
    .quad f3
    .quad f4

jmp_to_n:
    pushq %rdi
    mrmovq -3(%rsp), %rbx # rbx = 8 * rdi
    mrmovq jtable(%rbx), %rbx
    irmovq 2, %r10
    rmmovq %rbx, real_jmp(%r10) # *real_jmp = %rbx
real_jmp:
    jmp jtable
    
main:
    irmovq $0x2,%rdi
    call jmp_to_n
    ret

# Stack starts here and grows to lower addresses
    .pos 0x200
stack:

irmovq scratch, %rax
rrmovq %rax, %rbx
rmmovq %rbx, 0x8(%rax)
irmovq 0x9, %rax
irmovq 0x7fffffffffffffff, %rbx
addq %rbx, %rax
xorq %rax, %rax 
halt

scratch:

irmovq $0x8000000000000000, %rcx
irmovq $0x2, %rdx
subq %rdx, %rcx

# SF=0, OF=1
jge B2

B1:
irmovq $0xab, %rax
halt

B2:
irmovq $0xcd, %rax
halt