section .data
arr db "ABCDE "
msg1 db "Enter 1. for non overlapping block transfer without string instruction",10
msg2 db "Enter 2. for non overlapping block transfer with string instruction",10
msg3 db "Enter 3. for overlapping block transfer without string instruction",10
msg4 db "Enter 4. for overlapping block transfer with string instruction",10
msg5 db "Enter 5. EXIT",10
msglen equ $-msg1
msg6 db "Enter an offset",10
msg6len equ $-msg6
msg7 db 10
msg7len equ $-msg7
section .bss
choice resb 2
off resd 1
%macro inout 4
mov rax,%1
mov rdi,%2
mov rsi,%3
mov rdx,%4
syscall
%endmacro
section .text
global _start
_start:
inout 1,1,msg1,msglen
inout 0,0,choice,2
cmp byte[choice],31H ;it is like switch case loop
je label1
cmp byte[choice],32H
je label2
cmp byte[choice],33H
je label3
cmp byte[choice],34H
je label4
cmp byte[choice],35H
je exit
label1: ;non overlapping without stirng ins
mov ecx,5H
mov esi,arr
mov edi,arr
add edi,5H
again: mov al,[esi]
mov [edi],al
inc esi
inc edi
dec ecx
jnz again
inout 1,1,arr,10
inout 1,1,msg7,msg7len
jmp exit
label2: ;overlapping with string ins
mov ecx,5H
mov esi,arr
mov edi,arr
add edi,5H
CLD ;clear direction flag DF=0
REP MOVSB ;repeat mov string byte if DF=0 si=si+1 di=di+1
inout 1,1,arr,10
inout 1,1,msg7,msg7len
jmp exit
label3: ;overlapping without string ins
inout 1,1,msg6,msg6len
inout 0,0,off,1
sub dword[off],30H
mov ecx,5H
mov esi,arr
mov edi,arr
add esi,4H
add edi,4H
add edi,dword[off]
up: mov al,[esi]
mov [edi],al
dec esi
dec edi
dec ecx
jnz up
inout 1,1,arr,10
inout 1,1,msg7,msg7len
jmp exit
label4: ;overlapping with string ins
inout 1,1,msg6,msg6len
inout 0,0,off,1
sub dword[off],30H
mov ecx,5H
mov esi,arr
mov edi,arr
add esi,4H
add edi,4H
add edi,dword[off]
STD ;set direction flag DF=1
REP MOVSB ;repeat mov string byte if DF=1 si=si-1 di=di-1
inout 1,1,arr,10
inout 1,1,msg7,msg7len
jmp exit
exit:
mov rax,60
mov rsi,0
syscall
About Online Asm Compiler
Try our Online Asm Compiler (Version Nasm v2.15.05) to Edit, Run, and Share your Asm Code directly from your browser. This online development environment provides you the latest version Nasm v2.15.05.
How to use Online Asm Compiler?
Write and Execute Code
- Write your program (or, paste it) directly under the "Source Code" tab.
- If you want to save your program, go to the "Project" menu and save it.
- You can directly execute your program without saving it by clicking on on "Execute" button.
User Input
The latest version of Coding Ground allows to provide program input at run time from the termnial window exactly the same way as you run your program at your own computer. So simply run a program and provide your program input (if any) from the terminal window available in the right side.
Online Asm Compiler: Keyboard Shortcuts
The following are the keyword shortcut of this Online Asm Compiler:
Shortcut | Description |
⌘ + Enter | Run the program |
⌘ + S | Save Project (Login Required) |
⇧ + ⌘ + S | Save As Project |
⌘ + P | New Project |
⌘ + G | Share Project |
⌘ + Z | Undo Editing |
⌘ + Y | Redo Editing |
⌘ + A | Select All Text |
⌘ + X | Cut Selected Text |
⌘ + C | Copy Selected Text |
⌘ + V | Paste Copied Text |
⌘ + F | Search Text |
⌘ + ⌥ + F | Replace Text |
Shortcut | Description |
Ctrl + Enter | Run the program |
Ctrl + S | Save Project |
Shift + Ctrl + S | Save As Project |
Ctrl + G | Share Project |
Ctrl + Z | Undo Editing |
Ctrl + Y | Redo Editing |
Ctrl + A | Select All Text |
Ctrl + X | Cut Selected Text |
Ctrl + C | Copy Selected Text |
Ctrl + V | Paste Copied Text |
Ctrl + F | Search Text |
Ctrl + H | Replace Text |
Online Asm Compiler: Save and Share Asm Code (Project)
Save Asm Project Online
You can save your Asm Project with us so that you can access this project later on. To save a project you will need to create a login Id with us. So before you save a project, please create a login Id using a link given at the top right corner of this page.
Share Asm Project Online
You can use this feature to share your Asm Code with your teachers, classmates and colleagues. Just click Share Button and it will create a short link, which can be shared through Email, WhatsApp or even through Social Media. A shared link will be deleted if it has been passive for almost 3 months.
More Features of Online Asm Compiler
- Theme – You can change the current editor's theme from the "Editor Theme" option under "Settings" menu.
- Font Size – You can change the font size of the editor /compiler from from the "Font Size" option under "Settings" menu.
- Tab Size – You can change the tab size from the "Tab Size" option under "Settings" Menu.
- Show/Hide Line Numbers – You can show/hide the line number with the code from the "Show Line Numbers" or "Hide Line Numbers" option under "Settings" Menu.
- And, many more.
Benefits of Using Online Asm Compiler
There are several benefits of using the Online Asm Compiler to run your Asm code:
- Platform independence: You can run your code from any device without taking care of operating systems.
- Convenience: You don't need to install anything for using this.
- No setup required: There is no need for additional setup to run your code.
- Updated version: Our online compiler/editors/terminals are the latest up-to-date.