How to symbolize/debug AOT files?

[lewisfm]

Hi there, I'm trying to port WAMR to an embedded ARM platform; it's worked so far for simple WASM programs (e.g. an add_integers(i32, i32) -> i32 program) but as soon as I've introduced any host functions I get a memory permission error coming from code executing inside the AOT program. The host function isn't executed. By using the --xip flag with wamrc to get a consistent memory location of the AOT file, I've been able to get the address of the crashing code:

0x78001c8 (segfault address) - 0x7800004 (location AOT file is loaded into memory) = 0x1c4

Is there a recommended way to debug this? If this were a normal program I'd use llvm-symbolizer or addr2line to find the function name, but I wouldn't know what debug info file to pass in to those tools. Is my only option running the program in QEMU and setting a breakpoint at the location it's crashing?

Here's the code I'm using if that helps - it's a little messy right now. (I started with a simple adder and recently tested out adding a host function in the example/ directory. There's also a little bit of code left over from when I was using wasm3.)

https://github.com/vexide/hydrozoa/blob/f7433df41227e1a41080483d164e1aaaf9615f18/packages/runtime/src/bin/hydrozoa.rs