Lecture 7:MIPS Assembly Language and SPIM

Date: Apr. 24

Background Material and Further Resources

• Review C programming language as necessary (recursive functions, arrays, strings, pointers)
• Review material in chapter 3 sections 1 - 6

Reading

• Sections 3.7 - 3.8, 3.9 (pp. 157-158) and 3.10 - 3.11.
• Appendix A (sections A.1-2, A.9-10)

Topics

• Introducition to MIPS assembly language and the SPIM simulator.
• Arrays and Strings (sec. 3.7)
• Addressing Modes
  1. Register Addressing
  2. Base or Displacement Addressing
  3. Immediate Addressing
  4. PC-relative Addressing
  5. Pseudodirect Addressing
• Some immediate instructions (addi, subi, slti, lui)
• Some pseudo-instructions
  • blt and other conditional branches (use slt and bne)
  • move (use add with $zero)
• Some other things the assembler can do
  • loading a 32 bit constant (lui and addi)
  • branching far away (beq $s0, $s1, L1 => bne and j)
• Decoding Machine Language

Programs

• leaf_eg.asm (pp. 134-135)
• factorial.asm (pp. 136-137)
• strcpy.asm (pp. 143-144)

Assignment

• assignment 2