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

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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
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18
firmware/thread.c
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@ -141,6 +141,13 @@ static inline void load_context(const void* addr)
);
}
/* Set EMAC unit to fractional mode with saturation for each new thread,
since that's what'll be the most useful for most things which the dsp
will do. Codecs should still initialize their preferred modes
explicitly. */
#define THREAD_CPU_INIT(core, thread) \
({ (thread)->context.macsr = EMAC_FRACTIONAL | EMAC_SATURATE; })
#elif CONFIG_CPU == SH7034
/*---------------------------------------------------------------------------
* Store non-volatile context.
@ -193,6 +200,11 @@ static inline void load_context(const void* addr)
#endif
#ifndef THREAD_CPU_INIT
/* No cpu specific init - make empty */
#define THREAD_CPU_INIT(core, thread)
#endif
static void add_to_list(struct thread_entry **list, struct thread_entry *thread)
{
if (*list == NULL)
@ -660,6 +672,10 @@ struct thread_entry*
regs->sp = (void*)(((unsigned int)stack + stack_size) & ~3);
regs->start = (void*)function;
/* Do any CPU specific inits after initializing common items
to have access to valid data */
THREAD_CPU_INIT(core, thread);
return thread;
}
@ -753,10 +769,12 @@ void init_threads(void)
* probably a much better way to do this. */
if (core == CPU)
{
THREAD_CPU_INIT(core, &cores[CPU].threads[0]);
cores[CPU].threads[0].stack = stackbegin;
cores[CPU].threads[0].stack_size = (int)stackend - (int)stackbegin;
} else {
#if NUM_CORES > 1 /* This code path will not be run on single core targets */
THREAD_CPU_INIT(core, &cores[COP].threads[0]);
cores[COP].threads[0].stack = cop_stackbegin;
cores[COP].threads[0].stack_size =
(int)cop_stackend - (int)cop_stackbegin;