On Tuesday, August 23, 2011 17:48:50 Anton Staaf wrote:
I wasn't going to say it. :) How about something like this, which is very similar to what you had Mike, but doesn't define the array in the macro. It's a bit clearer what is going on, but also requires a bit more work at each use.
#define DCACHE_RESIZE(size) ((size) + get_dcache_line_size() - 1) #define DCACHE_ALIGN(buffer) ((buffer) + get_dcache_line_size() - 1) & ~(get_dcache_line_size() - 1)
char buffer[DCACHE_RESIZE(100)];
as long as people always use a byte-sized type (i.e. char), this should work. obviously using "u32 buffer[...]" will be bad.
It would be awesome if the idea below worked, but it can't because the array is popped when the ({...}) scope is exited I believe.
yes, i believe you are correct. -mike