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Re: RFA (Was: Re: RFC / RFA): dwarf2 unwinding for targets with call-part-clobbered
- From: Alexandre Oliva <aoliva at redhat dot com>
- To: Joern Rennecke <joern dot rennecke at superh dot com>
- Cc: wilson at tuliptree dot org (Jim Wilson), gcc at gcc dot gnu dot org, gcc-patches at gcc dot gnu dot org
- Date: 09 Jul 2003 15:13:02 -0300
- Subject: Re: RFA (Was: Re: RFC / RFA): dwarf2 unwinding for targets with call-part-clobbered
- Organization: GCC Team, Red Hat
- References: <200307091210.h69CAcQ02689@linsvr1.uk.superh.com>
On Jul 9, 2003, Joern Rennecke <joern.rennecke@superh.com> wrote:
> For sh64-elf, registers 10 to 14 and 18 are saved as 32 bit, yet their
> reg_raw_mode is DImode. using reg_raw_mode in
> expand_builtin_init_dwarf_reg_sizes means that extra data is clobbered
> on little endian, and for big endian, the restored values are completely
> garbled.
Talking of dwarf2 EH in sh64-elf... Do you have any plans on how to
address linking a mixed 32media/compact application with a SHcompact
library? When throw is compiled in compact mode, it can't possibly
restore SHmedia-only registers. Are you just going to take this as a
`if it hurts, don't do it' case?
--
Alexandre Oliva Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer aoliva@{redhat.com, gcc.gnu.org}
CS PhD student at IC-Unicamp oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist Professional serial bug killer