devs/foxbox
1
0
Fork 0
forked from len0rd/rockbox
Code Pull requests Activity

Add CPU-model-specific init to newborn threads. Add default %macsr for each thread created on coldfire (EMAC_FRACTIONAL | EMAC_SATURATE).

Browse source 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12483 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sevakis 2007-02-25 21:43:10 +00:00
parent f5184f34bf
commit 2c9cbc12e1
2 changed files with 20 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

7
firmware/target/coldfire/system-coldfire.c
View file

@ -234,16 +234,13 @@ void (* const vbr[]) (void) __attribute__ ((section (".vectors"))) =
void system_init(void)
{
/* Clear the accumulators. From here on it's the responsibility of
whoever uses them to clear them after use (use movclr instruction). */
whoever uses them to clear them after use and before giving control
to "foreign" code (use movclr instruction). */
asm volatile ("movclr.l %%acc0, %%d0\n\t"
"movclr.l %%acc1, %%d0\n\t"
"movclr.l %%acc2, %%d0\n\t"
"movclr.l %%acc3, %%d0\n\t"
: : : "d0");
/* Set EMAC unit to fractional mode with saturation, since that's
what'll be the most useful for most things which the main thread
will do. */
coldfire_set_macsr(EMAC_FRACTIONAL | EMAC_SATURATE);
/* Set INTBASE and SPURVEC */
INTBASE = 64;