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Re: [patch, binutils] Patch elf/mips.h for -mfp64 support.
- From: "Joseph S. Myers" <joseph at codesourcery dot com>
- To: Doug Gilmore <Doug dot Gilmore at imgtec dot com>
- Cc: <binutils at sourceware dot org>, Richard Sandiford <rdsandiford at googlemail dot com>, "Maciej W. Rozycki" <macro at codesourcery dot com>
- Date: Tue, 10 Sep 2013 23:08:57 +0000
- Subject: Re: [patch, binutils] Patch elf/mips.h for -mfp64 support.
- Authentication-results: sourceware.org; auth=none
- References: <522E6DDF dot 10909 at imgtec dot com>
On Mon, 9 Sep 2013, Doug Gilmore wrote:
> We would like to enable Linux processes to use 64-bit FP registers (as
> opposed to using register pairs for DP values) on 32-bit MIPS
> processors.
Will you be posting corresponding patches to glibc (setjmp / longjmp /
*context functions, at least; preferably also dynamic linker sanity checks
using this new ELF flag to ensure that classic hard-float o32 binaries
don't use -mfp64 o32 shared libraries, and vice versa) and GDB/gdbserver
(both register handling and function call/return support for the new ABI
if not already present)? What about an ABI supplement explaining how
-mfp64 affects the hard-float o32 function call / return ABI, if there
isn't already such a document?
--
Joseph S. Myers
joseph@codesourcery.com