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66fb5a29bb
Apply the pre-commit hook whitespace fixes to all files in the repo. (Line endings, blank lines at end of file, trailing whitespace)
45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
#include "sdkconfig.h"
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#include "unity.h"
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#include "esp_intr_alloc.h"
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#if defined(__XTENSA__) && CONFIG_FREERTOS_CORETIMER_0
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#include "xtensa/config/core-isa.h"
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#include "xtensa/hal.h"
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#if defined(XCHAL_HAVE_WINDOWED)
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/* Regression test for a0 register being corrupted in _xt_context_save.
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*
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* The idea in this test is to have a function which recursively calls itself
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* with call4, eventually filling up all the register windows. At that point,
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* it does some lengthy operation. If an interrupt occurs at that point, and
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* corrupts a0 register of one of the windows, this will cause an exception
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* when the recursive function returns.
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*/
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/* See test_context_save_clober_func.S */
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extern void test_context_save_clober_func(void);
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static void int_timer_handler(void *arg)
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{
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xthal_set_ccompare(1, xthal_get_ccount() + 10000);
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(*(int*) arg)++;
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}
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TEST_CASE("context save doesn't corrupt return address register", "[freertos]")
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{
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/* set up an interrupt */
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intr_handle_t ih;
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int int_triggered = 0;
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TEST_ESP_OK(esp_intr_alloc(ETS_INTERNAL_TIMER1_INTR_SOURCE, 0, int_timer_handler, &int_triggered, &ih));
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xthal_set_ccompare(1, xthal_get_ccount() + 10000);
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/* fill all the windows and delay a bit, waiting for an interrupt to happen */
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test_context_save_clober_func();
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esp_intr_free(ih);
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TEST_ASSERT_GREATER_THAN(0, int_triggered);
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}
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#endif // XCHAL_HAVE_WINDOWED
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#endif // __XTENSA__ && CONFIG_FREERTOS_CORETIMER_0
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