Trying to get the IDE lldb based debugger to work on M1.... But I don't have M1 myself, so ...

When
     procedure fpc_Raiseexception (Obj : TObject; AnAddr : CodePointer; AFrame : Pointer); compilerproc;
is entered, the IDE tries to get the arguments. In normal user installs this code has no debug info, though the IDE relies on knowing the register for each of he arguments?

I do hope that the call on M1 also uses registers. If so, can anyone tell me which registers?

Obj:     On 64bit-Intel Linux that is RDI   (Win64: RCX) AnAddr:  On 64bit-Intel Linux that is RSI   (Win64: RDX) AFrame:  On 64bit-Intel Linux that is RDX   (Win64: R8)

Anything similar on M1?

On Wed, Feb 16, 2022 at 3:17 PM Martin Frb via fpc-devel <

wrote: Anything similar on M1?

should it be ARM64 calling convention?
https://en.wikipedia.org/wiki/Calling_convention#ARM_(A64)

Possible. I have a bit of disassembly, a callstack, and a listing of register values  at that call. They suggest its x0 x1 and x2

I just hoped for some definite confirmation by someone who knows for sure.

With the exceptions documented at
https://developer.apple.com/documentation/xcode/writing-arm64-code-for-apple-platforms (although those don't affect fpc_Raiseexception).

Jonas