multi-arch debug doesn't dump definitions as requested

[Richard Earnshaw <rearnsha at arm dot com>]

According to
http://sources.redhat.com/gdb/papers/multi-arch/howto.html

	Rebuild and then run GDB vis: 

	gdb/gdb
	(gdb)
	(gdb) set archdebug 1
	(gdb) file x-y-z
	....

	If all goes well, gdb will report the current value of all the
	architecture dependent macro's. At this stage must are still 
	being taken from hardwired definitions in your
	tm-XXX.h file. Failing that, an internal error message 
	reporting an uninitialised architecture vector member will be
	reported. 

Except that that doesn't happen.  All I get is

	(gdb) set archdebug 1
	Warning: command 'set archdebug' is deprecated.
	Use 'set debug arch'.

	(gdb) file gdb
	gdbarch_update: info.bfd_arch_info arm
	gdbarch_update: info.byte_order 1 (little)
	gdbarch_update: info.abfd 0x1d2e00
	gdbarch_update: info.tdep_info 0x0
	gdbarch_update: Architecture 0x001d3000 (arm) unchanged
	Reading symbols from gdb...done.

Note, "set debug arch 1" doesn't do anything different either.

How about a "maint" (or maint info) command?

R.