Translate from C++ to Pep/9

Question

Take the following C++ program and translate it into Pep/9 assembly language

#include

using namespace std;

int age;

char first, last;

int main() {

  cin >> age;

  cin >> first >> last;

  cout << "Your age " << age << endl;

  cout << "Initials " << first << last << endl;

  if (age >= 30)

      cout << “Cannot trust\n”;

  return 0;

}

Answer 1

age:

.zero 4

first:

.zero 1

last:

.zero 1

.LC0:

.string "Your age :>"

.LC1:

.string "Initials :>"

.LC2:

.string "Cannot trust \n"

main:

push rbp

mov rbp, rsp

mov esi, OFFSET FLAT:.LC0

mov edi, OFFSET FLAT:_ZSt4cout

call std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)

mov esi, OFFSET FLAT:age

mov edi, OFFSET FLAT:_ZSt3cin

call std::basic_istream<char, std::char_traits<char> >::operator>>(int&)

mov esi, OFFSET FLAT:.LC1

mov edi, OFFSET FLAT:_ZSt4cout

call std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)

mov esi, OFFSET FLAT:first

mov edi, OFFSET FLAT:_ZSt3cin

call std::basic_istream<char, std::char_traits<char> >& std::operator>><char, std::char_traits<char> >(std::basic_istream<char, std::char_traits<char> >&, char&)

mov esi, OFFSET FLAT:last

mov rdi, rax

call std::basic_istream<char, std::char_traits<char> >& std::operator>><char, std::char_traits<char> >(std::basic_istream<char, std::char_traits<char> >&, char&)

mov eax, DWORD PTR age[rip]

cmp eax, 29

jle .L2

mov esi, OFFSET FLAT:.LC2

mov edi, OFFSET FLAT:_ZSt4cout

call std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)

.L2:

mov eax, 0

pop rbp

ret

__static_initialization_and_destruction_0(int, int):

push rbp

mov rbp, rsp

sub rsp, 16

mov DWORD PTR [rbp-4], edi

mov DWORD PTR [rbp-8], esi

cmp DWORD PTR [rbp-4], 1

jne .L6

cmp DWORD PTR [rbp-8], 65535

jne .L6

mov edi, OFFSET FLAT:_ZStL8__ioinit

call std::ios_base::Init::Init() [complete object constructor]

mov edx, OFFSET FLAT:__dso_handle

mov esi, OFFSET FLAT:_ZStL8__ioinit

mov edi, OFFSET FLAT:_ZNSt8ios_base4InitD1Ev

call __cxa_atexit

.L6:

nop

leave

ret

_GLOBAL__sub_I_age:

push rbp

mov rbp, rsp

mov esi, 65535

mov edi, 1

call __static_initialization_and_destruction_0(int, int)

pop rbp

ret