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freertos: Restore uxPortCompareSet() in ESP32 unicore & make compatible code for ESP32S2Beta

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This macro is used in places which expect it to work even without dual core being on.

Still make "mux" functions in FreeRTOS into no-ops as the mux is not needed.
This commit is contained in:
Angus Gratton
2019-08-20 17:12:09 +10:00
committed by Angus Gratton
parent e9901d15a1
commit c22965b22c
2 changed files with 23 additions and 1 deletions
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18
components/freertos/include/freertos/portmacro.h
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@@ -353,13 +353,29 @@ static inline unsigned portENTER_CRITICAL_NESTED(void) {
* ESP32 (portMUX assertions would fail).
*/
static inline void uxPortCompareSet(volatile uint32_t *addr, uint32_t compare, uint32_t *set) {
#ifndef CONFIG_FREERTOS_UNICORE
#if XCHAL_HAVE_S32C1I
__asm__ __volatile__ (
"WSR %2,SCOMPARE1 \n"
"S32C1I %0, %1, 0 \n"
:"=r"(*set)
:"r"(addr), "r"(compare), "0"(*set)
);
#else
// No S32C1I, so do this by disabling and re-enabling interrupts (slower)
uint32_t intlevel, old_value;
__asm__ __volatile__ ("rsil %0, " XTSTR(XCHAL_EXCM_LEVEL) "\n"
: "=r"(intlevel));
old_value = *addr;
if (old_value == compare) {
*addr = *set;
}
__asm__ __volatile__ ("memw \n"
"wsr %0, ps\n"
:: "r"(intlevel));
*set = old_value;
#endif
}