20135234 Ma Qiyang-—— Information Security system design basics Sixth Week study summary

Processor architecture

4.1 Y86 Instruction Set architecture

4.1.1 Programmer Visible State

Each instruction in the Y86 program reads or modifies portions of the processor state, called the programmer's visible state.

4.1.2 Y86 directive

4 Instructions: IRMOVL,RRMOVL,MRMOVL,RMMOVL, indicating the format of the source and destination, respectively

4 integer operation instruction: Addl,subl,andl,xorl

7 Jump Code Instruction JMP,JLE,JL,JNE,JGE,JG

6 Conditional Delivery Instructions CMOVLE,CMOVL,CMOVE,CMOVGE,CMOVG

The call command returns the address to the stack and then jumps to the destination site

PUSHL and POPL instructions are implemented into the stack and out of the stack

Execution of halt instruction stop instruction

4.1.3 Instruction Encoding

Instruction set important properties: Byte encoding must have a unique interpretation that is either a sequence of bytes or a code that is a unique sequence of instructions

The destination address of the branch instruction and the calling instruction is an absolute address

4.1.4 Y86 Anomalies

Value	Name	Meaning
1 2 3 4	AOK HLK Adr Ins	Normal operation Processor execution Halt instructions Illegal address encountered Encounter illegal instructions

4.2 Logic Design and seal Control Language HCl

4.2.1 Logic Gate

And,or,not

&&,| |,!

4.2.2 Combination Circuit and HCl Boolean expression

By combining a lot of logic gates into a network, you can form a computational block called a combinational circuit.

Multiplexer: According to the value of the input control model, choose a different set of numerical signals

4.2.5 Memory and Clock

Clock registers

Random access memory

sequential implementation of 4.3 Y86

4.3.1 will process the organization into stages:

Take a finger

Decoding

Perform

Visit

Write back

Update pc

4.3.2 SEQ Hardware structure

Take a finger

Decoding

Perform

Visit

Write back

　　　　

20135234 Ma Qiyang-—— Information Security system design basics Sixth Week study summary