CMPT 295 – About our Midterm 2

Midterm 2

Everything we covered up until (and including) our lecture on Friday, Nov. 5 is subject to examination

All material from Lecture 1 until and including Lecture 25 (partial lecture notes + annotated lecture notes + your own lecture notes + recorded lectures)
Labs 1 to 4, Assignments 1 to 7 (even though Assignment 7 is due after our Midterm 2)
All demo code posted on our course web site
All Readings + Practice Problems:
- Chapters 2 and 3 + Practice Problems (see Midterm 1 Instructions for listing)
- Chapter 3, Section 3.7, 3.8 (skip 3.8.5 and 3.9), 3.10 (skip 3.10.5 and 3.11),
  - Practice Problems 3.32 to 3.40, 3.46, 3.48
Emphasis on the material seen from Lectures 17 to 25

First section: questions that require short answers. For example:
- “Yes/no” or
- “fill in the blank” or
- a few words/numbers
- etc…
Second section: questions that require written answers. For example:
- Calculating – we always show every step of our work
- Writing/completing C or assembly code
- Drawing
- Hand tracing code
- Writing an answer (in English)
- etc…

As part of Midterm 2’s appendix, we will be given the following information:

Table of x86-64 Jumps:

Instruction	Condition	Description
`jmp`	always	Unconditional jump
`je`/`jz`	ZF	Jump if equal / zero
`jne`/`jnz`	~ZF	Jump if not equal / not zero
`js`	SF	Jump if negative
`jns`	~SF	Jump if nonnegative
`jo`	OF	Jump if overflow
`jno`	~OF	Jump if not overflow
`jq`/`jnle`	~(SF ^ OF) & ~ZF	Jump if greater (signed >)
`jge`/`jnl`	~(SF ^ OF)	Jump if greater or equal (signed >=)
`jl`/`jnge`	SF ^ OF	Jump if less (signed <)
`jle`/`jng`	(SF ^ OF) \| ZF	Jump if less or equal (signed <=)
`ja`/`jnbe`	~CF & ~ZF	JumP if greater (unsigned >)
`jae`/`jnb`	~CF	Jump if greater or equal (unsigned >=)
`jb`/`jnae`/`jc`	CF	Jump if less (unsigned <)
`jbe`/`jna`/`jnc`	CF \| ZF	Jump if less or equal (unsigned <=)

Table of x86-64 Registers

64-bit (quad)	32-bit (double)	16-bit (word)	8-bit (byte)	8-bit (byte)
63..0	31..0	15..0	15..8	7..0
rax	eax	ax	ah	al	Return value
rbx	ebx	bx	bh	bl	Callee served
rcx	ecx	cx	ch	cl	4th arg
rdx	edx	dx	dh	dl	3rd arg
rsi	esi	si		sil	2nd arg
rdi	edi	di		dil	1st arg
rbp	ebp	bp		bpl	Callee served
rsp	esp	sp		spl	Stack position
r8	r8d	r8w		r8b	5th arg
r9	r9d	r9w		r9b	6th arg
r10	r10d	r10w		r10b	Callee served
r11	r11d	r11w		r11b	Callee served
r12	r12d	r12w		r12b	Callee served
r13	r13d	r13w		r13b	Callee served
r14	r14d	r14w		r14b	Callee served
r15	r15d	r15w		r15b	Callee served

and the powers of 2 from $2^{-10}$ to $2^{16}$ in decimal.

Front of classroom is the bottom of the table:

EVERYTHING HERE (the front of the class) (included cell phones, computer and calculator)! Keep pens, pencils, eraser with you!

Once you have received your midterm, leave the midterm face up on your table
Read its instructions on its first page
Please, do not touch, leaf through, or write your name on the midterm
- Why? Because it is unfair to all other students who have not yet received a midterm
When all students have received a midterm, you will be instructed to start the midterm

If you have a question

Have a look at the instructions on Page 1 for an answer
If the answer to your question is not on Page 1, raise your hand and the instructor will attend to your question – the instructor is the only person answering questions (TAs will not be answering questions)

When you are told to Please, stop writing! please, do stop writing and hand in our midterm as instructed
Why? If you continue writing, it is unfair to all other students who have stopped writing

(Transcriber’s note: rest of slide is blank)