查看ESP32 ULP的源代码

=== rtc_cmd_rd_reg ===

<source lang=bash>
   0x4008f3a4 <rtc_cmd_rd_reg>:	entry	a1, 32
   0x4008f3a7 <rtc_cmd_rd_reg+3>:	l32r	a9, 0x4008043c
   0x4008f3aa <rtc_cmd_rd_reg+6>:	extui	a4, a4, 0, 5
   0x4008f3ad <rtc_cmd_rd_reg+9>:	slli	a8, a4, 18
   0x4008f3b0 <rtc_cmd_rd_reg+12>:	or	a8, a8, a9
   0x4008f3b3 <rtc_cmd_rd_reg+15>:	extui	a3, a3, 0, 5
   0x4008f3b6 <rtc_cmd_rd_reg+18>:	extui	a2, a2, 0, 10
   0x4008f3b9 <rtc_cmd_rd_reg+21>:	or	a2, a8, a2
   0x4008f3bc <rtc_cmd_rd_reg+24>:	slli	a9, a3, 23
   0x4008f3bf <rtc_cmd_rd_reg+27>:	or	a2, a2, a9
   0x4008f3c2 <rtc_cmd_rd_reg+30>:	retw.n
   0x4008f3c4:	ill
(gdb) x /1x 0x4008043c
0x4008043c:	0x20000000
</source>