[Answered] Assembler language reference manual ...

[hydrabus]

1) A way to Count Leading Zeros of a 32bits unsigned integer
Does such feature exist on ESP32 CPU ?

Yes, using NSAU instruction. Compiler will generate it if you use GCC __builtin_clz() intrinsic.

Thanks for the hint and the fact it support asm instruction for that I will test it later to check it generate the right asm code...

2) In a near future write an IDA Pro Processor Module for ESP32 (as only ESP8266 is supported ...)

I have extended the 8266 ida-python plugin with some of the ESP32 instructions (not added FP yet) and am using it personally in day-to-day debugging using ScratchABit disassembler. I can share what i have if you want to work on this.

Could you share your plugin ?
My email is bvernoux at hydrabus.com

4) A way to retrieve number of cycles executed (with accuracy of CPU clock so 240MHz) on 64bits if possible (but I can survive with 32bits), CPU cycle counter (like on ARM CM3... => DWTBase->CYCCNT) is perfect for that (even if timer can be also used ...)

32-bit CPU cycle counter can be queried by reading CCOUNT special register, or equivalently, using xthal_get_ccount function defined in Xtensa HAL.

Thanks for the hint I will check that

[ESP_igrr]

Could you share your plugin ?
My email is bvernoux at hydrabus.com

I've sent you an email.

[hydrabus]

Could you share your plugin ?
My email is bvernoux at hydrabus.com

I've sent you an email.

Thanks for all I have replied to your Email

[kolban]

Has there been an update on the assembler language reference manual availability?

[lesept]

Hi
Any news about the availability of the assembler language reference manual for ESP32?

[ESP_Sprite]

Still no change in status, unfortunately...

[tosemusername]

So will this ever happen?

[ESP_Sprite]

It's unlikely that the official Cadence docs ever see a non-NDA-encumbered release... but there is information out there in the form of the compiler etc. We've tried to compile all this publically available info into one one file. It's a bit terse, bit I think it should be helpful when you decide to write assembly.