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Add some CACHEALIGN_* macros and a helper function to assist in aligning data and buffers on PortalPlayer processors to cache line boundaries. They're noops when PROC_NEED_CACHEALIGN isn't defined. Go safe and increase the value to 32 since I'm not sure yet if 16 is sufficient - changing that is a one-liner. Add helper to plugin API which will be needed shortly.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15523 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sevakis 2007-11-08 05:17:20 +00:00
parent 194a66ef83
commit 57d71e4267
8 changed files with 87 additions and 5 deletions
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2
firmware/export/general.h
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@ -21,6 +21,7 @@
#define GENERAL_H
#include <stdbool.h>
#include <stddef.h>
/* round a signed/unsigned 32bit value to the closest of a list of values */
/* returns the index of the closest value */
@ -34,5 +35,6 @@ int make_list_from_caps32(unsigned long src_mask,
unsigned long caps_mask,
unsigned long *caps_list);
size_t align_buffer(void **start, size_t size, size_t align);
#endif /* GENERAL_H */