Re: [MiNT] gcc 68000 vs 68020-60 vs 68060 comparison

[Vincent Rivière <vincent.riviere@freesbee.fr>]

Miro Kropacek a écrit :
> But we are talking about native builds then, right? And since your step 
> by step tutorial and my Makefile are for cross compiler only... it 
> shouldn't be needed. Maybe for some stuff while building cross compiler? 
> What would be really strange, native build using cross compiler needs no 
> libm but cross compiler building on i686 does ;-) 

This look strange... did you recompile the C++ compiler ?
I think the problem was only with the C++ libraries.
I will try to remember (with my full email history).

> That's interesting. What is needed for 32-bit compiler with 32-bit 
> aligns but respecting original TOS structures? Some changes to 
> mint/osbind.h and friends?

There are several things to do to enable 32-bit aligment:
- The C compler must be configured to keep the stack and the structure 
members aligned (in the internal GCC config file. Easy.).
- The OS Malloc() must return an aligned pointer (seems good already).
- The C malloc() must return an aligned pointer.
- The current binutils are ready to respect alignment on global variables.

Then the public OS structures must be protected with the right pragma 
pack alignments. I made some tests recently, and unfortunately I didn't 
manage to get what I wanted... but we should make tests with a compiler 
already configured for 32-bit alignment.

--
Vincent Rivière