esp-idf/components/xtensa/linker.lf

[mapping:xtensa]
archive: libxtensa.a
entries:
    eri (noflash_text)
    xtensa_intr_asm (noflash_text)
    if IDF_TARGET_ESP32S2 = y:
        stdatomic (noflash)

[mapping:xt_hal]
archive: libxt_hal.a
entries:
    * (noflash_text)