深入理解计算机系统 CSAPP 实验lab：Architecture Lab

前期准备参考: 深入理解计算机系统 CSAPP 第四章 Y86-64模拟器安装与使用-CSDN博客

writeup上写了要求,这里就不赘述了.

Part A:

sum.ys:

# Execution begins at address 0 
	.pos 0
	irmovq stack, %rsp  	# Set up stack pointer
	call main		# Execute main program
	halt			# Terminate program 

# Sample linked list
	.align 8
ele1:
	.quad 0x00a
	.quad ele2
ele2:
	.quad 0x0b0
	.quad ele3
ele3:
	.quad 0xc00
	.quad 0


main:	irmovq ele1,%rdi
	call sum	     # sum(ele1)
	ret

# long sum(long *start)
# start in %rdi
sum:	xorq %rax,%rax	     # sum = 0
	andq %rdi,%rdi	     # Set CC
	jmp     test         # Goto test
loop:	mrmovq (%rdi),%r10   # Get *start
	irmovq $8,%r8
	addq %r10,%rax       # Add to sum
	addq %r8,%rdi  	     # start++
	mrmovq (%rdi),%rdi   # *start
	andq %rdi,%rdi	     # Set CC
test:	jne    loop          # Stop when 0
	ret                  # Return

# Stack starts here and grows to lower addresses
	.pos 0x200
stack:

addq %r8,%rdi 是下一个元素的地址,不是值.

rsum.ys:

# Execution begins at address 0 
	.pos 0
	irmovq stack, %rsp  	# Set up stack pointer
	call main		# Execute main program
	halt			# Terminate program 

# Sample linked list
	.align 8
ele1:
	.quad 0x00a
	.quad ele2
ele2:
	.quad 0x0b0
	.quad ele3
ele3:
	.quad 0xc00
	.quad 0


main:	irmovq ele1,%rdi
	xorq %rax,%rax	     # sum = 0
	call rsum	     # rsum(rsum)
	ret

# long rsum(long *start)
# start in %rdi
rsum:	andq %rdi,%rdi	     # Set CC
	je return            # Stop when 0
	mrmovq (%rdi),%rbx   # Get *start
	mrmovq 8(%rdi),%rdi   # *start
	pushq %rbx
	call rsum
	popq %rbx
	addq %rbx,%rax       # Add to sum
return:	ret                  # Return

# Stack starts here and grows to lower addresses
	.pos 0x200
stack:

copy.ys:

# Execution begins at address 0 
	.pos 0
	irmovq stack, %rsp  	# Set up stack pointer
	call main		# Execute main program
	halt			# Terminate program 

.align 8
# Source block
src:
.quad 0x00a
.quad 0x0b0
.quad 0xc00
# Destination block
dest:
.quad 0x111
.quad 0x222
.quad 0x333


main:	irmovq src,%rdi
	irmovq dest,%rsi
	irmovq $3,%rdx
	call copy	     # copy(src,dest,0)
	ret

# long copy(long *src,long *dest,long len)
# src in %rdi ,dest in %rsi,len in %rdx
copy:	xorq %rax,%rax	     # result = 0
loop:	andq %rdx,%rdx
	mrmovq (%rdi),%rcx
	rmmovq %rcx,(%rsi)
	irmovq $1,%r10
	irmovq $8,%r8
	xorq %rcx,%rax
	addq %r8,%rdi
	addq %r8,%rsi
	subq %r10,%rdx
	jg loop    # >0
return:	ret                  # Return

# Stack starts here and grows to lower addresses
	.pos 0x200
stack:

Part B:

因为前面的家庭作业和练习题已经做过这个,这里不在赘述了.

参考,图4-18,在不同的阶段需要用哪写寄存器,修改哪些逻辑,添加上 ,IIADDQ 即可.

#/* $begin seq-all-hcl */
####################################################################
#  HCL Description of Control for Single Cycle Y86-64 Processor SEQ   #
#  Copyright (C) Randal E. Bryant, David R. O'Hallaron, 2010       #
####################################################################

## Your task is to implement the iaddq instruction
## The file contains a declaration of the icodes
## for iaddq (IIADDQ)
## Your job is to add the rest of the logic to make it work

####################################################################
#    C Include's.  Don't alter these                               #
####################################################################

quote '#include <stdio.h>'
quote '#include "isa.h"'
quote '#include "sim.h"'
quote 'int sim_main(int argc, char *argv[]);'
quote 'word_t gen_pc(){return 0;}'
quote 'int main(int argc, char *argv[])'
quote '  {plusmode=0;return sim_main(argc,argv);}'

####################################################################
#    Declarations.  Do not change/remove/delete any of these       #
####################################################################

##### Symbolic representation of Y86-64 Instruction Codes #############
wordsig INOP 	'I_NOP'
wordsig IHALT	'I_HALT'
wordsig IRRMOVQ	'I_RRMOVQ'
wordsig IIRMOVQ	'I_IRMOVQ'
wordsig IRMMOVQ	'I_RMMOVQ'
wordsig IMRMOVQ	'I_MRMOVQ'
wordsig IOPQ	'I_ALU'
wordsig IJXX	'I_JMP'
wordsig ICALL	'I_CALL'
wordsig IRET	'I_RET'
wordsig IPUSHQ	'I_PUSHQ'
wordsig IPOPQ	'I_POPQ'
# Instruction code for iaddq instruction
wordsig IIADDQ	'I_IADDQ'

##### Symbolic represenations of Y86-64 function codes                  #####
wordsig FNONE    'F_NONE'        # Default function code

##### Symbolic representation of Y86-64 Registers referenced explicitly #####
wordsig RRSP     'REG_RSP'    	# Stack Pointer
wordsig RNONE    'REG_NONE'   	# Special value indicating "no register"

##### ALU Functions referenced explicitly                            #####
wordsig ALUADD	'A_ADD'		# ALU should add its arguments

##### Possible instruction status values                             #####
wordsig SAOK	'STAT_AOK'	# Normal execution
wordsig SADR	'STAT_ADR'	# Invalid memory address
wordsig SINS	'STAT_INS'	# Invalid instruction
wordsig SHLT	'STAT_HLT'	# Halt instruction encountered

##### Signals that can be referenced by control logic ####################

##### Fetch stage inputs		#####
wordsig pc 'pc'				# Program counter
##### Fetch stage computations		#####
wordsig imem_icode 'imem_icode'		# icode field from instruction memory
wordsig imem_ifun  'imem_ifun' 		# ifun field from instruction memory
wordsig icode	  'icode'		# Instruction control code
wordsig ifun	  'ifun'		# Instruction function
wordsig rA	  'ra'			# rA field from instruction
wordsig rB	  'rb'			# rB field from instruction
wordsig valC	  'valc'		# Constant from instruction
wordsig valP	  'valp'		# Address of following instruction
boolsig imem_error 'imem_error'		# Error signal from instruction memory
boolsig instr_valid 'instr_valid'	# Is fetched instruction valid?

##### Decode stage computations		#####
wordsig valA	'vala'			# Value from register A port
wordsig valB	'valb'			# Value from register B port

##### Execute stage computations	#####
wordsig valE	'vale'			# Value computed by ALU
boolsig Cnd	'cond'			# Branch test

##### Memory stage computations		#####
wordsig valM	'valm'			# Value read from memory
boolsig dmem_error 'dmem_error'		# Error signal from data memory


####################################################################
#    Control Signal Definitions.                                   #
####################################################################

################ Fetch Stage     ###################################

# Determine instruction code
word icode = [
	imem_error: INOP;
	1: imem_icode;		# Default: get from instruction memory
];

# Determine instruction function
word ifun = [
	imem_error: FNONE;
	1: imem_ifun;		# Default: get from instruction memory
];

bool instr_valid = icode in 
	{ INOP, IHALT, IRRMOVQ, IIRMOVQ, IRMMOVQ, IMRMOVQ,
	       IOPQ, IJXX, ICALL, IRET, IPUSHQ, IPOPQ, IIADDQ };#changed

# Does fetched instruction require a regid byte?
bool need_regids =
	icode in { IRRMOVQ, IOPQ, IPUSHQ, IPOPQ, 
		     IIRMOVQ, IRMMOVQ, IMRMOVQ , IIADDQ};#changed

# Does fetched instruction require a constant word?
bool need_valC =
	icode in { IIRMOVQ, IRMMOVQ, IMRMOVQ, IJXX, ICALL, IIADDQ };#changed

################ Decode Stage    ###################################

## What register should be used as the A source?
word srcA = [
	icode in { IRRMOVQ, IRMMOVQ, IOPQ, IPUSHQ  } : rA;
	icode in { IPOPQ, IRET } : RRSP;
	1 : RNONE; # Don't need register
];

## What register should be used as the B source?
word srcB = [
	icode in { IOPQ, IRMMOVQ, IMRMOVQ , IIADDQ } : rB;#changed
	icode in { IPUSHQ, IPOPQ, ICALL, IRET } : RRSP;
	1 : RNONE;  # Don't need register
];

## What register should be used as the E destination?
word dstE = [
	icode in { IRRMOVQ } && Cnd : rB;
	icode in { IIRMOVQ, IOPQ, IIADDQ} : rB;#changed
	icode in { IPUSHQ, IPOPQ, ICALL, IRET } : RRSP;
	1 : RNONE;  # Don't write any register
];

## What register should be used as the M destination?
word dstM = [
	icode in { IMRMOVQ, IPOPQ } : rA;
	1 : RNONE;  # Don't write any register
];

################ Execute Stage   ###################################

## Select input A to ALU
word aluA = [
	icode in { IRRMOVQ, IOPQ } : valA;
	icode in { IIRMOVQ, IRMMOVQ, IMRMOVQ, IIADDQ } : valC;#changed
	icode in { ICALL, IPUSHQ } : -8;
	icode in { IRET, IPOPQ } : 8;
	# Other instructions don't need ALU
];

## Select input B to ALU
word aluB = [
	icode in { IRMMOVQ, IMRMOVQ, IOPQ, ICALL, 
		      IPUSHQ, IRET, IPOPQ, IIADDQ } : valB;#changed
	icode in { IRRMOVQ, IIRMOVQ } : 0;
	# Other instructions don't need ALU
];

## Set the ALU function
word alufun = [
	icode == IOPQ : ifun;
	1 : ALUADD;
];

## Should the condition codes be updated?
bool set_cc = icode in { IOPQ, IIADDQ };#changed

################ Memory Stage    ###################################

## Set read control signal
bool mem_read = icode in { IMRMOVQ, IPOPQ, IRET };

## Set write control signal
bool mem_write = icode in { IRMMOVQ, IPUSHQ, ICALL };

## Select memory address
word mem_addr = [
	icode in { IRMMOVQ, IPUSHQ, ICALL, IMRMOVQ } : valE;
	icode in { IPOPQ, IRET } : valA;
	# Other instructions don't need address
];

## Select memory input data
word mem_data = [
	# Value from register
	icode in { IRMMOVQ, IPUSHQ } : valA;
	# Return PC
	icode == ICALL : valP;
	# Default: Don't write anything
];

## Determine instruction status
word Stat = [
	imem_error || dmem_error : SADR;
	!instr_valid: SINS;
	icode == IHALT : SHLT;
	1 : SAOK;
];

################ Program Counter Update ############################

## What address should instruction be fetched at

word new_pc = [
	# Call.  Use instruction constant
	icode == ICALL : valC;
	# Taken branch.  Use instruction constant
	icode == IJXX && Cnd : valC;
	# Completion of RET instruction.  Use value from stack
	icode == IRET : valM;
	# Default: Use incremented PC
	1 : valP;
];
#/* $end seq-all-hcl */

sim文件夹中右键启动终端,重新生成版本为full的ssim版本: