Hello Rohit,
first, you use an SMP CPU selection in TRACE32 PowerView. If you can give me more information about your target processor, then I could help you more with this.
Please then have a look to "SMP Concept" and "Basic Debugging (SMP)" in https://repo.lauterbach.com/pdf/training_debugger_smp.pdf

My target processor contain 4 A53 core. So that I have to run the code on all this 4 cores. I can load and run the program but i don't know on which core the code is running. I want to view the registers of all cores as a part of debug. I need 4 debug windows ,one for each core so that when i step in the code i can see it on all the 4 cores. Here I am adding some portion of my .cmm file.

SYStem.CPU XXXX
SYStem.CONFIG CORE 1. 1.
CORE.ASSIGN 1. 2. 3. 4.
************************************
Data.LOAD.Elf "xxx_smp.elf" ;.out smp file for 4 core
Register.Set PC _init_ /CORE 1.
Register.Set PC _init_ /CORE 2.
Register.Set PC _init_ /CORE 3.
Go _init_
Mode.Hll
WinPOS 0. 0. 116. 26.
List.auto

By this code a single window with _init_ code portion will come.It may be the 4th core.

You need to open a List window with the /CORE option:

List.auto /CORE 0
List.auto /CORE 1
List.auto /CORE 2
List.auto /CORE 3

I have tried with this. Now I can see the code snippet and registers of all the 4 cores at the same time. But Now there is a problem when debugging, step in it is not properly step in all the 4 core simultaneoulsy. Is it the issue with .cmm file?

Also
List /CORE
Register.view /CORE
Go __system_start

List /CORE 1.
Register.view /CORE 1.
Go __system_start

List /CORE 2.
Register.view /CORE 2.
Go __system_start

List /CORE 3.
Register.view /CORE 3.
Go __system_start

When I use this code snippet to debug from __system_start in all the 4 cores, core1, core2 and core3 is available. Core 0 __system_start and its registers are not available.