lol... no worries.

Is it possible to launch 64-bit termux within 32-bit Android?

Is it possible to launch any 64-bit app on 32-bit Android?

cpu should be 64-bit here

I suppose that user space binary can use 64-bit asm

There's AArch64 execution state and AArch32 execution state. 64-bit state can run 32-bit code, but not the other way.

I've tried to find simple asm source to compile and test on the phone.

It would be some kind of runtime check

aarch64 specific asm *

But didn't find anything

aarch32 OS cannot host an aarch64 userspace application

The phone isn't rooted therefore I don't know for sure what OS is being running. I'm trying to test it in runtime

If you're right then I'll see any error

install CPU-Z from the playstore and go to System Tab

you'll see either aarch64 or armv7l

armv8l

that's 64-bit

Therefore I'm continue my road to compile runtime test

it's likely not reliable test

I take it back, it looks like the 32-bit mode is called armv8l sometimes

should say aarch64 in 64-bit mode

Can you modify this source to add dummy aes instruction ? raw.githubusercontent.com/matja/asm…hello.aarch64.linux.syscall.gas.asm

the same way as you did in c++ to test hardware aes support in runtime?

because hello wrold without aes is running fine here

or even better just static randomx-benchmark build for aarch64

I've added 3 instructions from randomx-benchmark and it works fine: paste.debian.net/hidden/c0786122

Unfortunately, there is no static randomx-benchmark for aarch64 on github

all runtime tests have passed

good, so you have a 64-bit ARM chip with crypto extensions

but that android app says armv8l

and termux is a shitty enviroment

the same level as cygwin

can't you just try to compile xmrig in termux?

I'm going to cross-compile for aarch64

xmrig didn't even compiled due to lack of some headers

works on my android phone, but it's 64 bit

xmrig hasn't been compiled due to errors *

randomx-benchmark won't compile?

I've compiled randomx-benchmark successfuly in termux but it fails to work without --softAes

I need correct static build for aarch64 to test with hardware aes

it crashes without softAes?

263ms per hash without largepages, without hardware aes

No crash, your c++ code detects exception and prints 'try ... --softAes'

without dataset *

what cmake options did you use?

it looks like AES code was not even compiled

( No need to investigate it since termux environment is a shit )

you have to use just "cmake .." without ARCH to get the full build

native can exclude AES if it's wrongly detected

another option is that the compiler doesn't support it

here: github.com/tevador/RandomX/blob/master/src/intrin_portable.h#L451

you can try to comment out othe #ifdef and see what happens

cross-compiled binary said 'Bad system call' via stderr within termux

Can't find any rwx place to upload it via 'adb push'

and test outside of termux

It's likely that cross-compile environment with 5.x kernel isn't compatible with 4.x android kernel