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Re: Soft-float and newlib
- To: Michael Sokolov <msokolov at ivan dot Harhan dot ORG>
- Subject: Re: Soft-float and newlib
- From: Walter Christian <wolti at sil dot at>
- Date: Sun, 24 Sep 2000 05:39:08 +0200 (MEST)
- cc: newlib at sourceware dot cygnus dot com
On Sat, 23 Sep 2000, Michael Sokolov wrote:
> Walter Christian <wolti@sil.at> wrote:
>
> > The first problem I encounterd was, that newlib doesn't
> > build an soft-float version by default.
>
> This has nothing to do with Newlib. The decision as to what multilib variants
> to build is made in the gcc configury. Newlib and all other target libraries
> simply take this information from gcc.
>
> But I thought that the m68k-coff configuration *does* have an -msoft-float
> multilib variant. (I can't check right now as I'm preparing for the move to
> California.) What version of gcc are you using?
Hello,
Yes. I just found the msoft-float library version of newlib in the
source-tree. You were right and it was build because it was part of the
multilib variant.
Know the debugger doesn't complain about an not available floating-point
instruction, instead it complains about an illegal instruction.
> CPU32Bug>go
> Effective address: 00003000
> Illegal Opcode
> PC =000050B4 SR =2700=TR:OFF_S_7_..... VBR =00000000
> SFC =5=SD DFC =5=SD USP =0000FC00 SSP* =0000FD64
> D0 =40034764 D1 =52575662 D2 =40034764 D3 =52575662
> D4 =00000000 D5 =00000000 D6 =00000000 D7 =00000000
> A0 =00005F54 A1 =00005F54 A2 =00005534 A3 =40080000
> A4 =00000000 A5 =0000FEF8 A6 =0000FD74 A7 =0000FD64
> 000050B4 E9C2 DC.W $E9C2
The function where the exception occured is __fixdfsi. As you said that
soft-float is part of gcc does that mean that my gcc compiler doesn't work
as it should ?
Regards,
Walter Christian
>
> --
> Michael Sokolov Harhan Engineering Laboratory
> Public Service Agent International Free Computing Task Force
> International Engineering and Science Task Force
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>
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>