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| author | Michael Sevakis <jethead71@rockbox.org> | 2007-03-19 22:04:17 +0000 |
|---|---|---|
| committer | Michael Sevakis <jethead71@rockbox.org> | 2007-03-19 22:04:17 +0000 |
| commit | e1dd10ddfb49bfdd05fa8997bc097df93a9c9466 (patch) | |
| tree | 0c530ecb1ab68eb335edf595829bf7786e6a683e /firmware/common | |
| parent | fbf52ae8fe04f27368392b71a3572dc2bb00788f (diff) | |
| download | rockbox-e1dd10ddfb49bfdd05fa8997bc097df93a9c9466.zip rockbox-e1dd10ddfb49bfdd05fa8997bc097df93a9c9466.tar.gz rockbox-e1dd10ddfb49bfdd05fa8997bc097df93a9c9466.tar.bz2 rockbox-e1dd10ddfb49bfdd05fa8997bc097df93a9c9466.tar.xz | |
SWCODEC: Get rid of extra swap buffer and get back 512K of RAM or 100K if the players RAM is <= 1MB. Make any needed changes to things to stabilize and facilitate this including removing flattening out initialization. Comment some things heavily. Fix a few logfs I didn't want to see the compiler complaining about.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12843 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/common')
| -rw-r--r-- | firmware/common/memswap128.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/firmware/common/memswap128.c b/firmware/common/memswap128.c new file mode 100644 index 0000000..af1fe15 --- /dev/null +++ b/firmware/common/memswap128.c @@ -0,0 +1,44 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Copyright (C) 2007 by Michael Sevakis + * + * All files in this archive are subject to the GNU General Public License. + * See the file COPYING in the source tree root for full license agreement. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ****************************************************************************/ +#include "config.h" +#include <string.h> +#include <inttypes.h> + +void memswap128(void *a, void *b, size_t len) +{ + for (len >>= 4; len > 0; len--, a += 16, b += 16) + { + int32_t a0 = *((int32_t *)a + 0); + int32_t a1 = *((int32_t *)a + 1); + int32_t a2 = *((int32_t *)a + 2); + int32_t a3 = *((int32_t *)a + 3); + int32_t b0 = *((int32_t *)b + 0); + int32_t b1 = *((int32_t *)b + 1); + int32_t b2 = *((int32_t *)b + 2); + int32_t b3 = *((int32_t *)b + 3); + *((int32_t *)b + 0) = a0; + *((int32_t *)b + 1) = a1; + *((int32_t *)b + 2) = a2; + *((int32_t *)b + 3) = a3; + *((int32_t *)a + 0) = b0; + *((int32_t *)a + 1) = b1; + *((int32_t *)a + 2) = b2; + *((int32_t *)a + 3) = b3; + } +} |