Consider the assembly language function below. I have added some comments to help you understand the code.

(gdb) disas p4

Dump of assembler code for function p4:

0x4005c0 <+0>: movzbl (%rdi),%edx

0x4005c3 <+3>: test %dl,%dl # %dl is the least significant bype of %rdx

0x4005c5 <+5>: je 0x4005e9

0x4005c7 <+7>: add $0x1,%rdi

0x4005cb <+11>: xor %eax,%eax

0x4005cd <+13>: nopl (%rax) # nopl ("no-op") does nothing and is for alignment

0x4005d0 <+16>: cmp %sil,%dl # %sil is the least significant byte of %rsi

0x4005d3 <+19>: sete %dl

0x4005d6 <+22>: add $0x1,%rdi

0x4005da <+26>: movzbl %dl,%edx

0x4005dd <+29>: add %edx,%eax

0x4005df <+31>: movzbl -0x1(%rdi),%edx

0x4005e3 <+35>: test %dl,%dl

0x4005e5 <+37>: jne 0x4005d0

0x4005e7 <+39>: retq

0x4005e9 <+41>: xor %eax,%eax

0x4005eb <+43>: retq

A. (1 point)The first parameter of p4 is an array. What type of data does the array contain? Explain your answer.

C. (1 point) What type of data is passed as the second parameter of p4? Explain.

D. (1 point) If a function is passed a third parameter, it is placed in register %rdx..

Note that %rdx (!%dl!) is used in line ,, among other places. Is this function passed a third parameter? Explain your answer.

E. (1 point) What type of data (if any) does the function return?

F. (1 point) In 25 words or less, describe in English what p4 does.