any material on Arm cortex m3 for multi threading

I am looking for any material relating to Arm Cortex m3 multi threading. I wanted to do multithreading on cortex m3. But I cant find any examples on the google search using c language for multi threading...
Does the Arm Cortex-52+ support multi-core / cache coherent / SMP configurations?

The Arm Cortex-R Comparison Table downloaded from Arm ( https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwibler1ifX5AhWOXvEDHY-QAwkQFnoECBIQAQ&url=https%3A%2F%2Fwww.arm.com%2F...
cortex A9 multi-core

I'm learning cortex-a9 on freescale imx6 platform. How to start multi-core? And how to communicate between cores? I'm confused.
cortex A9 multi-core

I'm learning cortex-a9 on freescale imx6 platform. How to start multi-core? And how to communicate between cores? I'm confused.
ARM N1SDP Multi-SoC

Hi, ALL I have a question on N1SDP Multi-SoC system, the multi-SoC are managed by Hypervisor (in EL2), and I create a Virtual Machine on the Hypervisor, the VM use CPU and Memory from NODE1, but the...