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Risc-v-qemu-virt in FreeRTOS_ Scheduling opportunity of GCC
2022-07-05 11:15:00 【__ pop_】
At present, a total of the following two exceptions will be switched
timer
ecall
timer
Source/portable/GCC/RISC-V/portASM.S
handle_asynchronous:
test_if_mtimer
jal xTaskIncrementTick
flow 1 :
beqz a0, processed_source // No scheduling , immediate withdrawal
flow 2:
jal vTaskSwitchContext
j processed_source
ecall
We from here Can see freertos Realized Two anomalies ecall and mtimer
We from here Of "ecall After freertos_risc_v_trap_handler" Can see ecall Then it happened Switch
When will that be Will switch ? call portYIELD When
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