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tests: arm_interrupt: exend test case for FPU SHARING

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Extend the stress test of stacking error, to cover
the case of an active FP context.

Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
This commit is contained in:
Ioannis Glaropoulos 2021-02-05 14:15:40 +01:00
commit 12025e2620
1 changed files with 15 additions and 1 deletions
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16
tests/arch/arm/arm_interrupt/src/arm_interrupt.c
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@ -15,7 +15,7 @@ static volatile int expected_reason = -1;
static volatile int run_esf_validation;
static volatile int esf_validation_rv;
static volatile uint32_t expected_msp;
static K_THREAD_STACK_DEFINE(esf_collection_stack, 1024);
static K_THREAD_STACK_DEFINE(esf_collection_stack, 2048);
static struct k_thread esf_collection_thread;
#define MAIN_PRIORITY 7
#define PRIORITY 5
@ -377,7 +377,21 @@ void test_arm_interrupt(void)
* entry will make PSP descend below the limit and into the MPU guard
* section (or beyond the address pointed by PSPLIM in ARMv8-M MCUs).
*/
#if defined(CONFIG_FPU) && defined(CONFIG_FPU_SHARING) && \
defined(CONFIG_MPU_STACK_GUARD)
#define FPU_STACK_EXTRA_SIZE 0x48
/* If an FP context is present, we should not set the PSP
* too close to the end of the stack, because stacking of
* the ESF might corrupt kernel memory, making it not
* possible to continue the test execution.
*/
uint32_t fp_extra_size =
(__get_CONTROL() & CONTROL_FPCA_Msk) ?
FPU_STACK_EXTRA_SIZE : 0;
__set_PSP(_current->stack_info.start + 0x10 + fp_extra_size);
#else
__set_PSP(_current->stack_info.start + 0x10);
#endif
__enable_irq();
__DSB();