SSE2030: Introduction to Computer Systems (Fall 2016)

[Assignments]

• PA scores
  • If you have any opinions on scores, please email to TA until 12/19 (ertw9622@gmail.com).
• PA #1: 64-bit arithmetic using 32-bit integers (deadline: 10/4 11:59PM)
  • skeleton code
  • Sign up the submission site (http://sys.skku.edu)
    • You should enter the real name & real student ID
• PA #2: 64-bit arithmetic using 32-bit integers in assembly language (deadline: 11/13 11:59PM)
  • skeleton code
  • Changes:
    • You are allowed to use 64-bit operations for shift instructions (sarq, salq, shrq, shlq). Use the following instruction to get the upper 32 bits of the register %rdi: shrq $32, %rdi
    • You can use a single 64-bit operation such as orq at the end of your code to put the result into the rax register. Example:
      

       
      // Assume %edi and %eax contain 32-bit integers, respectively.
      shlq  $32, %rdi    // move the contents of %edi to upper 32 bits
      orq   %rdi, %rax   // OR'ing them
      
  • Notes:
    • When you perform 32-bit operations, note that the upper 32 bits of the destination register are cleared to zeroes. Refer to the following examples (assume the original value of %rax = 0x1234567812345678)
      
      

      movl $0xface, %eax // %rax becomes 0x000000000000face (not 0x123456780000face)
      xorl $eax, %eax    // %rax becomes 0x0000000000000000 (not 0x1234567800000000)
      
• PA #3: Defusing a Binary Bomb (deadline: 11/27 11:59PM)
  • You can obtain your bomb by pointing your web browser at http://sys.skku.edu:15213/
• PA #4: Drawing grid lines in an image (deadline: 12/11 11:59PM)
  • skeleton code
  • Submit only bmpgrid.s file to the submission site (http://sys.skku.edu)