tdep/1357: Mechanism to map address onto arch/mach

[ac131313@redhat.com]

>Number:         1357
>Category:       tdep
>Synopsis:       Mechanism to map address onto arch/mach
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          maintenance
>Submitter-Id:   net
>Arrival-Date:   Thu Aug 28 22:48:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator:     ac131313@redhat.com
>Release:        unknown-1.0
>Organization:
>Environment:

>Description:
There needs to be a standard interface for mapping an address onto an arch/mach.  Several things need this:

- breakpoints
So that "(gdb) break *0x1234" knows what type of memory breakpoint to insert at that point.

- disassembler
So that "(gdb) x/i 0x1234" displays the correct disassembly

Ex: ARM/THUMB, MIPS16/MIPS, sh4/sh5, m68hc11/m68hc12, i386/x86-64, ....

Note though that what ever the mechanism, it should probably be pushed up towards opcodes/ or bfd/.  This is because "objdump -d" also requires this facility.
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: