CS 3330 Midterm: CS 330 UVA s2017key2E
31 Jan 2019
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Letters go in the boxes unless otherwise specified (e. g. , for c 8 write c not 8 ). Write letters clearly: if we are unsure of what you wrote you will get a zero on that problem. Bubble and pledge the exam or you will lose points. Assume unless otherwise specified: little-endian 64-bit architecture, %rsp points to the most recently pushed value, not to the next unused stack address, questions are single-selection unless identified as select-all. Variable weight: point values per question are marked in square brackets. Mark clarifications: if you need to clarify an answer, do so, and also add a * to the top right corner of your answer box. Question 1 [4 pt]: suppose we are executing the following assembly code on the 5-stage pipelined processor we discussed in class: Write b to indicate that the bubble signal is set; s to indicate that the stall signal is set; and n to indicate neither are set.
