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Re: Target deprecation, round three
- From: David Edelsohn <dje at watson dot ibm dot com>
- To: Zack Weinberg <zack at codesourcery dot com>
- Cc: gcc at gcc dot gnu dot org, Nick Burrett <nick dot burrett at btinternet dot com>, Hans-Peter Nillson <hans-peter dot nilsson at axis dot com>, Carl Miller <chaz at energoncube dot net>, Rick Sustek <rsustek at cisco dot com>
- Date: Mon, 24 Feb 2003 12:48:20 -0500
- Subject: Re: Target deprecation, round three
>>>>> Zack Weinberg writes:
Zack> Please explain why the architectures and OSes supported by i370 but
Zack> not s390 cannot be migrated to the s390 back end.
The IBM S/390 architecture added instructions which do not exist
in the S/370 architecture, including PC-relative addressing. The s390
port relies on and assumes those instructions for its addressing model.
The s390 port targets ELF and Linux.
Zack> Also, since no one is is actively maintaining this port in the FSF
Zack> repository, and it has some serious issues there, I can only assume
Zack> that the people using this port are maintaining it in a private tree;
Zack> please explain why it affects that tree in any way if we drop the port
Zack> from the FSF repository.
Red Hat delivered a GCC port for the mainframe TPF environment
which should be merged into the FSF sources.
David