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Add code to assert() if non ISR safe API function is called from ISR in Tasking CM4F ports - plus fix bug where the max syscall interrupt priority was used incorrectly in the Tasking CM4F port.

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This commit is contained in:
Richard Barry 2014-06-15 09:24:08 +00:00
parent 113220628f
commit b4659d8872
2 changed files with 17 additions and 0 deletions
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13
FreeRTOS/Source/portable/Tasking/ARM_CM4F/port.c
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@ -81,6 +81,9 @@
#define portNVIC_PENDSV_PRI ( ( ( uint32_t ) configKERNEL_INTERRUPT_PRIORITY ) << 16 )
#define portNVIC_SYSTICK_PRI ( ( ( uint32_t ) configKERNEL_INTERRUPT_PRIORITY ) << 24 )
/* Masks off all bits but the VECTACTIVE bits in the ICSR register. */
#define portVECTACTIVE_MASK ( 0x1FUL )
/* Constants required to manipulate the VFP. */
#define portFPCCR ( ( volatile uint32_t * ) 0xe000ef34 ) /* Floating point context control register. */
#define portASPEN_AND_LSPEN_BITS ( 0x3UL << 30UL )
@ -240,6 +243,16 @@ void vPortEnterCritical( void )
ulCriticalNesting++;
__DSB();
__ISB();
/* This is not the interrupt safe version of the enter critical function so
assert() if it is being called from an interrupt context. Only API
functions that end in "FromISR" can be used in an interrupt. Only assert if
the critical nesting count is 1 to protect against recursive calls if the
assert function also uses a critical section. */
if( ulCriticalNesting == 1 )
{
configASSERT( ( ( *(portNVIC_INT_CTRL) ) & portVECTACTIVE_MASK ) == 0 );
}
}
/*-----------------------------------------------------------*/

4
FreeRTOS/Source/portable/Tasking/ARM_CM4F/port_asm.asm
View file

@ -92,6 +92,7 @@ _vector_14: .type func
stmdb sp!, {r3}
ldr.w r0, =ulMaxSyscallInterruptPriorityConst
ldr r0, [r0]
msr basepri, r0
bl vTaskSwitchContext
mov r0, #0
@ -146,6 +147,7 @@ _lc_ref__vector_pp_14: .type func
stmdb sp!, {r3}
ldr.w r0, =ulMaxSyscallInterruptPriorityConst
ldr r0, [r0]
msr basepri, r0
bl vTaskSwitchContext
mov r0, #0
@ -206,6 +208,7 @@ vPortStartFirstTask .type func
msr msp, r0
;Call SVC to start the first task.
cpsie i
cpsie f
dsb
isb
svc 0
@ -237,6 +240,7 @@ vPortEnableVFP .type func
ulPortSetInterruptMask:
mrs r0, basepri
ldr.w r1, =ulMaxSyscallInterruptPriorityConst
ldr r1, [r1]
msr basepri, r1
bx r14
.size ulPortSetInterruptMask, $-ulPortSetInterruptMask