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Ensure that the configMAX_SYSCALL_INTERRUPT_PRIORITY setting works with all possible values.

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This commit is contained in:
Richard Barry 2011-04-05 09:45:42 +00:00
parent 9133ceb44d
commit 8fc0c27ea5
3 changed files with 39 additions and 24 deletions
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9
Source/portable/MPLAB/PIC32MX/port_asm.S
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@ -195,11 +195,14 @@ vPortYieldISR:
lw s7, (s7)
sw s5, (s7)
/* Set the interrupt mask to the max priority that can use the API. */
/* Set the interrupt mask to the max priority that can use the API. The
yield handler will only be called at configKERNEL_INTERRUPT_PRIORITY which
is below configMAX_SYSCALL_INTERRUPT_PRIORITY - so this can only ever
raise the IPL value and never lower it. */
di
mfc0 s7, _CP0_STATUS
ori s7, s7, 1
ori s6, s7, configMAX_SYSCALL_INTERRUPT_PRIORITY << 10
ins s7, $0, 10, 6
ori s6, s7, ( configMAX_SYSCALL_INTERRUPT_PRIORITY << 10 ) | 1
/* This mtc0 re-enables interrupts, but only above
configMAX_SYSCALL_INTERRUPT_PRIORITY. */