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Re: [RFC] Additional targets for powerpc

From: Steve Munroe
Subject: Re: [RFC] Additional targets for powerpc
Date: Fri, 23 Sep 2005 08:39:36 -0500

Kumar Gala <address@hidden> wrote on 09/23/2005 12:20:06 AM:

> Steve,
> Let's make sure not to over look the embedded and 32-bit processors. 
> There are a number of variants here that include some user ISA 
> extensions that you did not mention:
> 4xx MAC
> Book-E isel
> e500 embedded fp
> e500 SPE
> Are ones that come of the top of my head.  Additionally, I would say 
> that Freescale has at least six different powerpc micro-architectures 
> that it ships today:
>      8xx, 603, 7400, 745x, e500, e200, (e700 in design)
> Also, we have optimized some libc functions for 745x that take 
> advantage of altivec and e500 that take advantage of SPE.
> Anyways my point is lets make sure that any discussion includes ALL 
> of powerpc, not just the ones shipping from IBM :)
> - kumar

My proposal is focused on current PowerPC64 compliant processors and the 
ISA supported in 32-/64-bit mode. This is important because 64-bit PowerPC 
implementation have an expanded instruction set for 32-bit mode. I think I 
have my hands full with that project.

If you have a Freescale implementations of the PowerPC64 Archecture I 
would like to hear more.

You can propose additional targets for specific PowerPC32 processor 
targets. Also e500 etc. is not PowerPC architecture complient and requires 
a different ABI and a separate port in GLIBC. e500 is not covery by this 

Steven J. Munroe
Linux on Power Toolchain Architect
IBM Corporation, Linux Technology Center

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