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Michael Sevakis 533d396761 Add multi-reader, single-writer locks to kernel.
Any number of readers may be in the critical section at a time and writers
are mutually exclusive to all other threads. They are a better choice when
data is rarely modified but often read and multiple threads can safely
access it for reading.

Priority inheritance is fully implemented along with other changes to the
kernel to fully support it on multiowner objects.

This also cleans up priority code in the kernel and updates some associated
structures in existing objects to the cleaner form.

Currently doesn't add the mrsw_lock.[ch] files since they're not yet
needed by anything but the supporting improvements are still useful.

This includes a typed bitarray API (bitarray.h) which is pretty basic
for now.

Change-Id: Idbe43dcd9170358e06d48d00f1c69728ff45b0e3
Reviewed-on: http://gerrit.rockbox.org/801
Reviewed-by: Michael Sevakis <jethead71@rockbox.org>
Tested: Michael Sevakis <jethead71@rockbox.org>
2014-08-06 02:47:47 +02:00
android Fix android black screen crash 2014-05-21 18:39:56 +10:00
apps Russian language update 2014-08-05 19:09:36 +02:00
backdrops Add Cabbiev2 port for 128x96x16 targets (Samsung YH-820), made by me. 2014-03-27 19:50:48 +00:00
bootloader crc-mi4: use const lookup table for crc 2014-07-07 12:54:50 +02:00
debian Prepare new maemo release 2013-03-10 12:12:38 +01:00
docs Added high score and save/load functionality to xobox game. 2014-05-02 00:56:10 +02:00
firmware Add multi-reader, single-writer locks to kernel. 2014-08-06 02:47:47 +02:00
flash Make fixepoint.c as a shared library (libfixedpoint.a). 2013-04-26 00:11:04 +02:00
fonts Remove superfluous executable bits on a bunch of files. 2011-06-08 14:22:03 +00:00
gdb Generate C file / header for svn version string 2010-05-27 09:41:46 +00:00
icons wpsbuild: Rewrite to fix various issues and support .fms 2012-06-10 21:20:36 +02:00
lib add supports for x,y value in percentage to several tags. 2014-07-21 04:54:53 +02:00
manual SVG image of the Creative Zen Mozaic and other formats for the manual. 2014-07-17 18:03:54 +02:00
packaging Prepare unofficial pandora release 2013-03-10 14:09:30 +01:00
rbutil Compile imxtools as gnu99 standard. 2014-06-30 17:58:37 +02:00
tools Make crosstool-ng build with gnu make 4.0 2014-07-30 14:29:27 +02:00
uisimulator Fix the simulators. 2014-05-24 01:12:02 +00:00
utils rk27load: stage1 dram config fix #2 2014-07-23 22:11:10 +02:00
wps lcd-24bit: Introduce a 24-bit mid-level LCD driver 2014-06-21 00:15:53 +02:00
.gitattributes Add a gitattributes file for the migration. 2011-12-01 14:14:59 +00:00
.gitignore Add *.o and *.a to .gitignore 2012-05-16 11:26:22 +02:00

               __________               __   ___.
     Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
     Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
     Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
     Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
                       \/            \/     \/    \/            \/

Build Your Own Rockbox

1. Clone 'rockbox' from git (or extract a downloaded archive).

   $ git clone git://git.rockbox.org/rockbox

     or

   $ tar xjf rockbox.tar.bz2

2. Create a build directory, preferably in the same directory as the firmware/
   and apps/ directories. This is where all generated files will be written.

   $ cd rockbox
   $ mkdir build
   $ cd build

3. Make sure you have sh/arm/m68k-elf-gcc and siblings in the PATH. Make sure
   that you have 'perl' in your PATH too. Your gcc cross compiler needs to be
   a particular version depending on what player you are compiling for. These
   can be acquired with the rockboxdev.sh script in the /tools/ folder of the
   source, or will have been included if you've installed one of the
   toolchains or development environments provided at http://www.rockbox.org/

   $ which sh-elf-gcc
   $ which perl

4. In your build directory, run the 'tools/configure' script and enter what
   target you want to build for and if you want a debug version or not (and a
   few more questions). It'll prompt you. The debug version is for making a
   gdb version out of it. It is only useful if you run gdb towards your target
   Archos.

   $ ../tools/configure

5. *ploink*. Now you have got a Makefile generated for you.

6. Run 'make' and soon the necessary pieces from the firmware and the apps
   directories have been compiled, linked and scrambled for you.

   $ make
   $ make zip

7. unzip the rockbox.zip on your music player, reboot it and
   *smile*.

If you want to build for more than one target, just create several build
directories and create a setup for each target:

   $ mkdir build-fmrecorder
   $ cd build-fmrecorder
   $ ../tools/configure

   $ mkdir build-player
   $ cd build-player
   $ ../tools/configure

Questions anyone? Ask on the mailing list. We'll be happy to help you!