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73b1afabd3
A test plugin that measures what ARM instructions cost on the running device. Each row times sixteen copies of one instruction in a loop and subtracts the empty loop, giving cycles per instruction. Where plugins get IRAM, each row is run with code and data in each combination of IRAM and DRAM. It covers ALU, shifts, branches, the load and store forms (including halfword and register-offset loads), load-use, and the multiplier at narrow and full-width operands. ARMv5 adds the DSP multiplies, clz, qadd, ldrd/strd and pld; ARMv6 adds the top-word and dual 16-bit multiplies, umaal, ssat, rev, the extends, pkhbt, the SIMD adds and multiply result latency. Cache misses are priced by a pointer chase and by sequential streams over working sets either side of the cache. Timing uses the SoC's microsecond counter on PP502x, PP5002, S5L870x, S5L8720, TCC7801 and i.MX233, and the tick elsewhere. Results go to the screen and to /test_cyc.txt. Built only with test plugins enabled, on native ARM targets that run ARM code (not Cortex-M). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Change-Id: I4a41f6daaa27fb817f411de89901a117c5c70f4d |
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|---|---|---|
| android | ||
| apps | ||
| backdrops | ||
| bootloader | ||
| docs | ||
| firmware | ||
| fonts | ||
| icons | ||
| lib | ||
| manual | ||
| packaging | ||
| tools | ||
| uisimulator | ||
| utils | ||
| wps | ||
| .gitattributes | ||
| .gitignore | ||
| .gitreview | ||
__________ __ ___.
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.xz
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 mips/m68k/arm-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 generated using the rockboxdev.sh script in the /tools/ folder of the
source.
$ which arm-elf-eabi-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-fuzeplus
$ cd build-fuzeplus
$ ../tools/configure
$ mkdir build-xduoox3
$ cd build-xduoox3
$ ../tools/configure
Questions anyone? Ask on the mailing list or on IRC. We'll be happy to help you!