Re: [hatari-devel] UAE 68030 MMU + prefetch + instruction and data cache emulation

[Eero Tamminen <oak@xxxxxxxxxxxxxx>]

Hi,

On 07/27/2017 09:15 PM, Toni Wilen wrote:
> I just pushed update to winuae tree that adds yet another UAE CPU
> emulation mode: 68030 MMU with prefetch pipeline, instruction and data
> cache (Previously this was only available in non-MMU mode). Data cache
> emulation is also improved.
>
> Perhaps this is useful in Atari emulation too and if it is, hopefully it
> also has better test cases :)
>
> It is not very well tested (it seems to work with Amiga debugging
> utilities, Amix and NetBSD 6, didn't bother to do more testing yet..)
>
> It also isn't very optimized but that isn't important at this point.

I'm seeing following compiler warnings:

hatari/src/cpu/cpummu030.c: In function ‘m68k_do_rte_mmu030’:
hatari/src/cpu/cpummu030.c:2532:41: warning: signed and unsigned type in 
conditional expression [-Wsign-compare]
  mmu030_opcode = (ps & 0x80000000) ? -1 : (oc & 0xffff);
                                         ^
hatari/src/cpu/cpummu030.c: In function ‘m68k_do_rte_mmu030c’:
hatari/src/cpu/cpummu030.c:2794:41: warning: signed and unsigned type in 
conditional expression [-Wsign-compare]
  mmu030_opcode = (ps & 0x80000000) ? -1 : (oc & 0xffff);
                                         ^
hatari/src/cpu/cpummu030.c:2843:53: warning: signed and unsigned type in 
conditional expression [-Wsign-compare]
   regs.pipeline_stop = ((ps >> 20) & 15) == 15 ? -1 : (ps >> 20) & 15;
                                                     ^

(In addition to the warnings from the FPU emulation code.)


	- Eero