57 lines
2.3 KiB
Text
57 lines
2.3 KiB
Text
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************************************************************************
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* 3DNow! support by KIMURA Takuhiro <kim@hannah.ipc.miyakyo-u.ac.jp> *
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* <kim@comtec.co.jp> *
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* (http://hannah.ipc.miyakyo-u.ac.jp/kim/) *
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* Syuuhei Kashiyama <squash@mb.kcom.ne.jp> *
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* (http://user.ecc.u-tokyo.ac.jp/~g810370/)*
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************************************************************************
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-----------------------------
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What's new in patch for 0.59r
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-----------------------------
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- 3DNow! optimized decode routine (decode_3dnow.s,dct36_3dnow.s ;
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these code based Syuuhei Kashiyama's 3DNow! patch for mpg123-0.59o)
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- 3DNow! optimized equalizer (equalizer_3dnow.s ; do_equalizer() only)
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- target "linux-3dnow-alsa" "linux-3dnow-esd" added (untested)
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- automatic detect 3DNow! support CPU from CPUFLAGS (getcpuflags.s)
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(i.e. use floating-pointer decode routine if your CPU isn't support
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3DNow! or MMX instructions)
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-------------
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Added options
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-------------
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"--test-3dnow" : display result of autodetect and exit
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"--force-3dnow" : force use of 3DNow! optimized decoder
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(it will cause SIGILL if your CPU isn't support 3DNow! or MMX
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instructions)
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"--no-3dnow" : force use of floating-pointer decoder
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-----------
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How to make
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-----------
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[1] To make 3DNow! optimized mpg123,you need binutils-2.9.1.0.15 or later.
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You can find the most recent binutils (2.9.1.0.25 until 23.Jun.1999) at
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- kernel.org (and mirrors) : /pub/linux/devel/gcc/
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- http://hannah.ipc.miyakyo-u.ac.jp/kim/Linux/binutils/
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(Takuhiro's local copy)
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etc.
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[2] Type "make linux-3dnow" (OSS)
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or "make linux-3dnow-alsa" (ALSA).
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[3] Enjoy!
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------------------
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Precompiled binary
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------------------
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You can get precompiled binary of mpg123 (with 3DNow! support) from
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http://hannah.ipc.miyakyo-u.ac.jp/kim/Linux/mpg123/
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----------
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References
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----------
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Useful sources of information on optimizing 3DNow! code include:
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- AMD 3DNow! Technology Manual (Publication #21928)
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English: http://www.amd.com/K6/k6docs/pdf/21928d.pdf
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(Japanese: http://www.amd.com/japan/K6/k6docs/j21928c.pdf)
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- AMD-K6-2 Processor Code Optimization Application Note (Publication #21924)
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English: http://www.amd.com/K6/k6docs/pdf/21924b.pdf
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