Kevin Diggs [EMAIL PROTECTED] writes:
Jeremy Kerr wrote:
Hi Kevin,
/*
* Turn r3 (range) into a rotate count for the selected
range. * 0 - 23, 1 - 31
*/
__asm__ __volatile__ ( slwi %0,%0,3\n
addi %0,%0,23\n
unsigned int get_PLL_range(unsigned int range, unsigned int config)
{
range = range * 8 + 23;
return ((config range) | (config (32 - range))) 3;
}
The special pattern ((a n) | (a (32 - n))) is recognized by
gcc as
a rotate operation.
It's only valid for 1 = n = 31 though, so for
Hi,
If I have:
inline unsigned int get_PLL_range(unsigned int range, unsigned int
config)
{
unsigned int ret;
/*
* Turn r3 (range) into a rotate count for the selected range.
* 0 - 23, 1 - 31
*/
__asm__ __volatile__ ( slwi %0,%0,3\n
On Tue, 2008-08-05 at 17:20 -0700, Kevin Diggs wrote:
Hi,
thats bad right? Because the addi 0, 0, 23 will not work as expected
because of the special property of r0. FYI: The first three lines
after the #APP are from a similar function get_PLL_ratio().
Is there a way to
Hi Kevin,
/*
* Turn r3 (range) into a rotate count for the selected
range. * 0 - 23, 1 - 31
*/
__asm__ __volatile__ ( slwi %0,%0,3\n
addi %0,%0,23\n
rlwnm %0,%1,%0,30,31\n:
Jeremy Kerr wrote:
Hi Kevin,
/*
* Turn r3 (range) into a rotate count for the selected
range. * 0 - 23, 1 - 31
*/
__asm__ __volatile__ ( slwi %0,%0,3\n
addi %0,%0,23\n
rlwnm %0,%1,%0,30,31\n:
