Re: [ECOS] HAL_DCACHE_xxx macros in mpc8xx HAL

[Christoph Csebits <christoph dot csebits at frequentis dot com>]

On Wed, Dec 11, 2002 at 07:19:00AM -0700, Gary Thomas wrote:
> This seems reasonable to me, although I would prefer the style of
> the macro we have:
>   * The computations of "base_addr", etc, are explicit (not in the for)
>   * Use names which start with "_" to lessen namespace pollution.
> 

is this acceptable?

#define HAL_DCACHE_FLUSH( _base_ , _size_ )                                  \
    CYG_MACRO_START                                                          \
    register int _base_addr = (~(HAL_DCACHE_LINE_SIZE - 1)) & (int)(_base_); \
    register int _end_addr = (int)(_base_) + (_size_);                       \
    for ( ; _base_addr < _end_addr ; _base_addr += HAL_DCACHE_LINE_SIZE )    \
    {                                                                        \
        asm volatile ("dcbf 0,%0;sync;" : : "r" (_base_addr));               \
    }                                                                        \
    CYG_MACRO_END

-- 


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