1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Vinvika [58]
3 years ago
8

Write a procedure named Str_find that searches for the first matching occurrence of a source string inside a target string and r

eturns the matching position. The input parameters should be a pointer to the source string and a pointer to the target string. If a match is found, the procedure sets the Zero flag and EAX points to the matching position in the target string. Otherwise, the Zero flag is clear and EAX is undefined.
Computers and Technology
1 answer:
kirill115 [55]3 years ago
6 0

Answer: Provided in the explanation section

Explanation:

Str_find PROTO, pTarget:PTR BYTE, pSource:PTR BYTE

.data

target BYTE "01ABAAAAAABABCC45ABC9012",0

source BYTE "AAABA",0

str1 BYTE "Source string found at position ",0

str2 BYTE " in Target string (counting from zero).",0Ah,0Ah,0Dh,0

str3 BYTE "Unable to find Source string in Target string.",0Ah,0Ah,0Dh,0

stop DWORD ?

lenTarget DWORD ?

lenSource DWORD ?

position DWORD ?

.code

main PROC

  INVOKE Str_find,ADDR target, ADDR source

  mov position,eax

  jz wasfound           ; ZF=1 indicates string found

  mov edx,OFFSET str3   ; string not found

  call WriteString

  jmp   quit

wasfound:                   ; display message

  mov edx,OFFSET str1

  call WriteString

  mov eax,position       ; write position value

  call WriteDec

  mov edx,OFFSET str2

  call WriteString

quit:

  exit

main ENDP

;--------------------------------------------------------

Str_find PROC, pTarget:PTR BYTE, ;PTR to Target string

pSource:PTR BYTE ;PTR to Source string

;

; Searches for the first matching occurrence of a source

; string inside a target string.

; Receives: pointer to the source string and a pointer

;    to the target string.

; Returns: If a match is found, ZF=1 and EAX points to

; the offset of the match in the target string.

; IF ZF=0, no match was found.

;--------------------------------------------------------

  INVOKE Str_length,pTarget   ; get length of target

  mov lenTarget,eax

  INVOKE Str_length,pSource   ; get length of source

  mov lenSource,eax

  mov edi,OFFSET target       ; point to target

  mov esi,OFFSET source       ; point to source

; Compute place in target to stop search

  mov eax,edi    ; stop = (offset target)

  add eax,lenTarget    ; + (length of target)

  sub eax,lenSource    ; - (length of source)

  inc eax    ; + 1

  mov stop,eax           ; save the stopping position

; Compare source string to current target

  cld

  mov ecx,lenSource    ; length of source string

L1:

  pushad

  repe cmpsb           ; compare all bytes

  popad

  je found           ; if found, exit now

  inc edi               ; move to next target position

  cmp edi,stop           ; has EDI reached stop position?

  jae notfound           ; yes: exit

  jmp L1               ; not: continue loop

notfound:                   ; string not found

  or eax,1           ; ZF=0 indicates failure

  jmp done

found:                   ; string found

  mov eax,edi           ; compute position in target of find

  sub eax,pTarget

  cmp eax,eax    ; ZF=1 indicates success

done:

  ret

Str_find ENDP

END main

cheers i hoped this helped !!

You might be interested in
1. Grouping Data in a Pivot Table can help you do what?
valentina_108 [34]

Answer:

1.Grouping data in a PivotTable can help you show a subset of data to analyze. For example, you may want to group an unwieldy list of dates or times (date and time fields in the PivotTable) into quarters and months, like this image. Note:  The time grouping feature is new in Excel 2016.

2.Select the rows or columns you wish to grouP

On the Data tab, in the Outline group, click the Group command.  

In the Group dialog box, select Rows or Columns and click OK.

3.Select the rows or columns you wish to ungroup.

On the Data tab, in the Outline group, click the Ungroup command.  

In the Group dialog box, select Rows or Columns and click OK.

4.

1.Launch Microsoft Excel.

2

Browse to and open the workbook file containing the pivot table and source data for which you need filter data.

3

Select the worksheet containing the pivot tab and make it active by clicking the appropriate tab.

4

Determine the attribute by which you want to filter data in your pivot table.  

The attribute should be one of the column labels from the source data that is populating your pivot table.

For example, assume your source data contains sales by product, month and region. You could choose any one of these attributes for your filter and have your pivot table display data for only certain products, certain months or certain regions. Changing the filter field would determine which values for that attribute are shown.

5

Force the Pivot Table Wizard or Field List to launch by clicking a cell inside the pivot table.

6

Drag and drop the column label field name you wish to apply as a filter to the "Report Filter" section of the pivot table field list.  

This field name may already be in the "Column Labels" or "Row Labels" section.

It may be in the list of all field names as an unused field.

7

Set the filter to display one of the values for the field.  

You can set the filter to display all values or only one. Click the arrow beside the filtered label and check the "Select Multiple Items" check box if you would like to select certain values for your filter.

Explanation:

PLZ MARK ME AS A BRAINLIST ;)

4 0
3 years ago
________is one of the most popular payment gateways founded in in December 1998​
iren2701 [21]

paypel is the most popular

6 0
3 years ago
Process redesign and reengineering in 1500 words
timama [110]

Answer:

Process re-design is the process in which re-work is done to achieve the improvement in the output. The major aim is to set the goals for achieving the main objective.

The various essential steps in the process of re-design are:

  • Data capturing process are used to identify the process and making the necessary changes.
  • Identify every step of the process to ensure that process is in organized way along with the workflow.

Re-engineering is the process of re-design the system with focuses to improve the efficiency and quality. It basically analysis the whole business re-engineering process. The main step is to identify the need for the changes.

 

7 0
3 years ago
Jasmine is writing a shopping app. She has created a variable to keep track of the number of items in the shopping cart. Everyti
Gemiola [76]

Answer:

b. cart total + 1

Explanation:

A. cart total=1 do increment the total with every 1 click here, it only 're-assigns cart total with value 1 for every click, hence it's always 1.

B. In every click, 1 is always added to the previous value of cart total, like addItemButton(cart total+1) or so.

C. This would have worked too if "cart total" and "cartTotal" where of same type.

D. cart total is just being initially defined here.

E. Likewise here, var shows that cart total has just only been declared.

6 0
3 years ago
Briefly explain the cooling mechanism implemented in FANLESS Laptops
Akimi4 [234]

The primary function of a fan in a computer system is to cool down the internal components and prevent overheating. Fanless computers use alternative cooling methods and lower-powered components that give off less heat. As a result, these machines are quieter during operation, use less energy and are often more compact than fan-based computers. These advantages are particularly important in business settings.
8 0
3 years ago
Other questions:
  • Julie bought a house for $315,000 and has a $285,000 mortgage. she claims she has $315,000 in equity. is she correct? if not, ho
    12·2 answers
  • 99 points!!! What would happen to the document if the change “A” is pointing to was accepted? a. There would be no changes. b. “
    6·2 answers
  • Assume the following instruction mix for some program:______.
    8·1 answer
  • Write a program that reads students’ names followed by their test scores. The program should output each student’s name followed
    13·1 answer
  • True / False<br> An instruction’s opcode generally indicates the number and type of its operands.
    5·1 answer
  • Given a string variable s that has already been declared, write some code that repeatedly reads a value from standard input into
    12·1 answer
  • The used of PPE in the shop includes the following, except:
    10·2 answers
  • Do like TikTok??????
    14·2 answers
  • Which of the following is the file type of Microsoft® Publisher files?
    12·2 answers
  • The choice of database does not have any impact on the relevancy of search results?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!