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2008-07-16 Till Straumann <strauman@slac.stanford.edu>

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* new-exceptions/cpu.c: use ppc_interrupt_get_disable_mask()
	to determine which bits to set/clear from _CPU_Context_Initialize().
This commit is contained in:
Till Straumann
2008-07-16 21:57:55 +00:00
parent 3d28361d19
commit d60239f6c8
2 changed files with 21 additions and 2 deletions
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18
c/src/lib/libcpu/powerpc/new-exceptions/cpu.c
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@@ -55,6 +55,7 @@ void _CPU_Initialize(
* _CPU_Context_Initialize
*/
void _CPU_Context_Initialize(
Context_Control *the_context,
uint32_t *stack_base,
@@ -76,11 +77,24 @@ void _CPU_Context_Initialize(
_CPU_MSR_GET( msr_value );
/*
* Setting the interrupt mask here is not strictly necessary
* since the IRQ level will be established from _Thread_Handler()
* again, as soon as the task starts execution.
* Because we have to establish a defined state anyways we
* can as well leave this code here.
* I.e., simply (and unconditionally) saying
*
* msr_value &= ~ppc_interrupt_get_disable_mask();
*
* would be an alternative.
*/
if (!(new_level & CPU_MODES_INTERRUPT_MASK)) {
msr_value |= MSR_EE;
msr_value |= ppc_interrupt_get_disable_mask();
}
else {
msr_value &= ~MSR_EE;
msr_value &= ~ppc_interrupt_get_disable_mask();
}
the_context->msr = msr_value;