1) Below are the contents of some registers and some memory. (For simplicity, the contents of memory are displayed as a sequence of 64-bit words and not individual bytes.) What happens if we execute the instruction at memory address 0x40047d?

40047d: e8 1a 00 00 00 callq 40049c 400482: 48 8d 04 1b lea (%rbx,%rbx,1),%rax

register	value
rbx	0x7fffffffffabc8
rsp	0x7fffffffffabb8

address	value
0x7fffffffffabb0	0x4d400
0x7fffffffffabb8	0x4d300
0x7fffffffffabc0	0x4d200
0x7fffffffffabc8	0x4d100

Question options:

a) The value 0x400482 is stored at 0x7fffffffffabc0, the value of %rsp is set to 0x7fffffffffabc0, and the next instruction that executes is at location 0x40049c

b) The value 0x40047d is stored at 0x7fffffffffabb0, the value of %rsp is set to 0x7fffffffffabb0, and the next instruction that executes is at location 0x40049c.

c) The value 0x400482 is stored at 0x7fffffffffabb0, the value of %rsp is set to 0x7fffffffffabb0, and the next instruction that executes is at location 0x40049c.

2) Below are the contents of some registers and some memory. (For simplicity, the contents of memory are displayed as a sequence of 64-bit words and not individual bytes.) What happens if we execute the instruction:

popq %rbx

register	value
rbx	0x7fffffffffabc8
rsp	0x7fffffffffabb8

address	value
0x7fffffffffabb0	0x4d400
0x7fffffffffabb8	0x4d300
0x7fffffffffabc0	0x4d200
0x7fffffffffabc8	0x4d100

Question options:

a) Stores the value 0x4d300 in %rbx and leaves %rsp alone

b) Stores the value 0x4d200 in %rbx and sets %rsp to 0x7fffffffffabc0

c) Stores the value 0x4d300 in %rbx and sets %rsp to 0x7fffffffffabc0