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Re: mips16 addresses
- From: Andrew Cagney <ac131313 at ges dot redhat dot com>
- To: "Martin M. Hunt" <hunt at redhat dot com>, binutils at sources dot redhat dot com
- Cc: gdb at sources dot redhat dot com
- Date: Thu, 12 Sep 2002 14:33:01 -0400
- Subject: Re: mips16 addresses
- References: <200209091425.47713.hunt@redhat.com>
[adding binutils@]
When a mips cpu is supposed to run code in mips16 mode, the lsb of the address
is set. However, DWARF linetables are not preserving this bit and it is not
clear they should. Is there a way to determine if an address should be run
in mips16 mode or not? I remember a discussion about bfd needing a new
function that would return architecture information given an address. Was
that ever added?
I remember a similar discussions but not the resolution.
It's really a BINUTILS problem. The ``objdump --disassemble'', which is
independant of GDB, needs to know the architecture/mode of every address
so that each instruction is correctly disassembled.
I think GDB just needs access to that, or a similar, interface. That
way it can do transformations like:
address -> machine/mode
How does the SH5 handle this?
Andrew