Thread Local Storage

Each thread is given a 0x200-byte thread-local-storage block by the kernel. It is used during IPC communications.

A pointer to the thread-local-storage can be read using the ARM instruction:

mrc        15, 0, rX, cr13, cr0, 3

Every application has RW access to its thread-local-storage.

The kernel requires the application to put IPC parameters and IPC static buffers inside the thread-local-storage:

Offset	Size	Description
0	0x80	Undefined, can be used by application for any purpose.
0x80	0x100	IPC command with parameters
0x180	0x80	IPC static buffers