Re: [PATCH] RS6000 and PowerPC CPU types

[Geoff Keating <geoffk at cygnus dot com>]

> Date: Fri, 12 May 2000 19:52:17 -0400
> From: Nick Duffek <nsd@cygnus.com>

[huge snip]
> However, as you mention later, GDB could use it for choosing instruction
> sets during disassembly, and presumably there are other uses for it.
> 
> Therefore, isn't it worthwhile making it be as correct as possible?  And
> isn't it incorrect to assume that XCOFF64 implies a 620?

It is only worthwhile if it doesn't cause problems.  The reason
XCOFF64 chooses a 620 is that the 620 is a 64-bit PowerPC cpu.  You
could choose another 64-bit PowerPC cpu, or something, but I don't
think saying "I have no idea at all" is good; it will cause objdump to
fail to disassemble anything.

In fact, that is the main use of coff_set_arch_mach_hook: it chooses
the instruction set used for disassembly.  I don't think there's any
other easy way to get from an object file format to an architecture.

-- 
- Geoffrey Keating <geoffk@cygnus.com>