Re: Mono 4.6.1 FTBFS on mipsel

Aurelien Jarno <[email protected]> Sat, 8 Oct 2016 16:17:53 +0200

Newsgroups	gmane.linux.debian.ports.mips
Message-ID	<[email protected]>

On 2016-10-08 13:42, Aurelien Jarno wrote:
> On 2016-10-07 21:04, Jo Shields wrote:
> > Dear MIPS team,
> > 
> > 
> > It seems that between Mono 4.2 and 4.6, Mono stopped building properly on little-endian 32-bit MIPS.
> > 
> > 
> > https://buildd.debian.org/status/fetch.php?pkg=mono&arch=mipsel&ver=4.6.1.3%2Bdfsg-2&stamp=1475869442
> 
> I have just got a quick look at the code triggering the assert:
> 
> |        case OP_LMUL:
> |        case OP_LDIV:
> |        case OP_LDIV_UN:
> |        case OP_LREM:
> |        case OP_LREM_UN:
> |        case OP_LSHL:
> |        case OP_LSHR:
> |        case OP_LSHR_UN:
> |                mono_print_ins (ins);
> |                g_assert_not_reached ();
> 
> For what I understand, it means that one of the above "internal
> intermediate instruction" (sorry don't know the mono name for that) has
> been emitted, and is not yet implemented for the MIPS backend.
> 
> Could you confirm? If it is the case and the only problem, that should
> be relatively easy to implement. I'll give a try in the next days.

These opcode concerns 64-bit long values. It's actually normal they are
not implemented for 32-bit MIPS. Could it be that they are listed
incorrectly in cpu-mips.md, probably in prevision of the 64-bit MIPS
support?

Aurelien

-- 
Aurelien Jarno                          GPG: 4096R/1DDD8C9B
[email protected]                 http://www.aurel32.net

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