Rafaël Carré
45c7498f59
FS#11335 by me: make ARM assembly functions thumb-friendly
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We can't pop into pc on ARMv4t when using thumb: the T bit won't be
modified if we are returning to a thumb function
Code running on ARMv4t should use the new ldrpc / ldmpc macros instead
of ldr pc, [sp], #4 and ldm(cond) sp!, {regs, pc}
No modification on pure ARM builds and ARMv5+
Note: USE_THUMB is currently never defined, no targets can currently be
built with -mthumb, see FS#6734
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26756 a1c6a512-1295-4272-9138-f99709370657
2010-06-11 04:41:36 +00:00
Andree Buschmann
7d21e5ab32
No need to use alternating registers for dual register read/write sequence. Correct comment.
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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25939 a1c6a512-1295-4272-9138-f99709370657
2010-05-10 20:35:57 +00:00
Andree Buschmann
18b5488a4a
Minor speed up (+3%) of iPod Video screen updates.
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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25938 a1c6a512-1295-4272-9138-f99709370657
2010-05-10 19:12:03 +00:00
Jens Arnold
47d4c4739b
ARM asm LCD and ATA driver functions: Don't save r12 as it is a scratch reg. Saves a bit of stack and execution time.
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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21795 a1c6a512-1295-4272-9138-f99709370657
2009-07-11 23:43:44 +00:00
Daniel Stenberg
2acc0ac542
Updated our source code header to explicitly mention that we are GPL v2 or
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later. We still need to hunt down snippets used that are not. 1324 modified
files...
http://www.rockbox.org/mail/archive/rockbox-dev-archive-2008-06/0060.shtml
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17847 a1c6a512-1295-4272-9138-f99709370657
2008-06-28 18:10:04 +00:00
Andree Buschmann
2364bc213c
Save a few registers in assembler routines for iPod 5Gs LCD driver and YUV conversion.
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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16840 a1c6a512-1295-4272-9138-f99709370657
2008-03-27 07:46:04 +00:00
Jens Arnold
120fb4f319
Speed up YUV blitting on iPod Video by ~8% (FS #8075 by Andree Buschmann).
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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15820 a1c6a512-1295-4272-9138-f99709370657
2007-11-26 23:48:23 +00:00
Jens Arnold
ef8a7eaf2a
Major speedup of the iPod Video LCD driver. The internal update procedure of the BCM chip is now completely shadowed, handled by a tick task as necessary. Also fixes the occasional UI freezes due to stalled BCM updates by re-kicking it after a timeout.
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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15397 a1c6a512-1295-4272-9138-f99709370657
2007-11-02 00:07:45 +00:00
Jens Arnold
b05066de12
iPod Video: Further optimised LCD data transfer (5..6% speedup, but increase in FPS measured with test_fps is less), making use of the fact that the low address bits aren't decoded by the BCM. Major cleanup of the driver, and introduced register names.
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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15341 a1c6a512-1295-4272-9138-f99709370657
2007-10-28 12:09:46 +00:00
Jens Arnold
3c1b9d9d70
Assembler optimised lcd_yuv_blit() for iPod Video (Fs #7951 by Andree Buschmann, adapted and separated into an .S file by me).
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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15257 a1c6a512-1295-4272-9138-f99709370657
2007-10-22 00:37:50 +00:00
