3.67

!INCLUDE "./code/3.67.c"

!INCLUDE "./code/3.67.s"

A.

104  +------------------+
     |                  |
     |                  |
     |                  |
     |                  |
     |                  |
     |                  |
     |                  |
     |                  |
 64  +------------------+ <-- %rdi
     |                  |
     |                  |
     |                  |
     |                  |
     |                  |
     |                  |
 32  +------------------+
     |         z        |
 24  +------------------+
     |        &z        |
 16  +------------------+
     |         y        |
  8  +------------------+
     |         x        |
  0  +------------------+ <-- %rsp

B.

eval pass a new address %rsp+64 to process

C.

process access s by %rsp+offset, not by %rdi

D.

eval pass address %rsp+64 to process, process store data from here as beginning,
finially return this address

E.

104  +------------------+
     |                  |
     |                  |
     |                  |
     |                  |
     |                  |
     |                  |
 88  +------------------+
     |        z         |
 80  +------------------+
     |        x         |
 72  +------------------+
     |        y         |
 64  +------------------+ <-- %rdi(eval pass in)
     |                  |  \
     |                  |   -- %rax(process pass out)
     |                  |
     |                  |
     |                  |
     |                  |
 32  +------------------+
     |         z        |
 24  +------------------+
     |        &z        |
 16  +------------------+
     |         y        |
  8  +------------------+
     |         x        |
  0  +------------------+ <-- %rsp in eval
     |                  |
 -8  +------------------+ <-- %rsp in process

F.

caller find space and pass space address to callee, callee store data on this
space area and return this address