Source code for esp_set_deep_sleep_wake_stub() ESP32-S3 version?

[PeteDD]

Can anyone point me to the source code for the function esp_set_deep_sleep_wake_stub() which is declared in sleep.h?
sleep.h is found here in platformio, for example:
\framework-arduinoespressif32\tools\sdk\esp32s3\include\esp_hw_support\include\sleep.h
and here on the espressif github
https://github.com/espressif/esp-idf/bl ... eep.h#L613
However, there are no links to the source code for this function, nor the others in the header file.
THANK YOU.

[boarchuz]

https://github.com/espressif/esp-idf/bl ... des.c#L344

[PeteDD]

Thank you. I was however trying to get one level beyond that... for example, what register reads/writes are happening for this command:
esp_set_deep_sleep_wake_stub()