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Merge branch 'experiments/unaligned_load' into feature/mbedtls_notworking

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This commit is contained in:
Angus Gratton 2015-09-25 16:57:49 +10:00
commit fc9d9ff89c
2 changed files with 544 additions and 473 deletions
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973
core/exception_vectors.S
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44
examples/experiments/unaligned_load/unaligned_load.c
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@ -207,8 +207,9 @@ void test_string(const char *string, char *label, bool evict_cache)
run_test(string, test_l16si, "load as l16si", nullvalue, evict_cache);
}
static void test_doubleexception();
static void test_isr();
static void test_sign_extension();
static void test_system_interaction();
void sanity_tests(void);
void user_init(void)
@ -225,8 +226,11 @@ void user_init(void)
test_string(iromtest, "Cached flash", 0);
test_string(iromtest, "'Uncached' flash", 1);
test_doubleexception();
test_isr();
test_sign_extension();
xTaskHandle taskHandle;
xTaskCreate(test_system_interaction, (signed char *)"interactionTask", 256, &taskHandle, 2, NULL);
}
static volatile bool frc1_ran;
@ -241,9 +245,9 @@ static void frc1_interrupt_handler(void)
frc1_finished = true;
}
static void test_doubleexception()
static void test_isr()
{
printf("Testing DoubleException behaviour...\r\n");
printf("Testing behaviour inside ISRs...\r\n");
timer_set_interrupts(FRC1, false);
timer_set_run(FRC1, false);
_xt_isr_attach(INUM_TIMER_FRC1, frc1_interrupt_handler);
@ -270,12 +274,40 @@ static void test_sign_extension()
int16_t *shorts_p = (int16_t *)unsigned_shorts;
if(shorts_p[0] == -3 && shorts_p[1] == -4 && shorts_p[2] == -5 && shorts_p[3] == -32767 && shorts_p[4] == 44)
{
printf("l16si sign extension worked as expected.\r\n");
printf("l16si sign extension PASSED.\r\n");
} else {
printf("l16si sign extension failed. Got values %d %d %d %d %d\r\n", shorts_p[0], shorts_p[1], shorts_p[2], shorts_p[3], shorts_p[4]);
printf("ERROR: l16si sign extension failed. Got values %d %d %d %d %d\r\n", shorts_p[0], shorts_p[1], shorts_p[2], shorts_p[3], shorts_p[4]);
}
}
/* test that running unaligned loads in a running FreeRTOS system doesn't break things
The following tests run inside a FreeRTOS task, after everything else.
*/
static void test_system_interaction()
{
uint32_t start = xTaskGetTickCount();
printf("Starting system/timer interaction test (takes approx 30 seconds)...\n");
for(int i = 0; i < 200*1000; i++) {
test_naive_strcpy_a0(iromtest);
test_naive_strcpy_a2(iromtest);
test_naive_strcpy_a3(iromtest);
test_naive_strcpy_a4(iromtest);
test_naive_strcpy_a5(iromtest);
test_naive_strcpy_a6(iromtest);
/*
const volatile char *string = iromtest;
volatile char *to = dest;
while((*to++ = *string++))
;
*/
}
uint32_t ticks = xTaskGetTickCount() - start;
printf("Timer interaction test PASSED after %dms.\n", ticks*portTICK_RATE_MS);
while(1) {}
}
/* The following "sanity tests" are designed to try to execute every code path
* of the LoadStoreError handler, with a variety of offsets and data values
* designed to catch any mask/shift errors, sign-extension bugs, etc */