Thread Local Storage

From 3dbrew
Revision as of 23:35, 3 September 2014 by Plutooo (talk | contribs)
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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