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Re: [Patch, MIPS] Modify __mpn routines for mips32r6/mips64r6
- From: Joseph Myers <joseph at codesourcery dot com>
- To: Steve Ellcey <sellcey at imgtec dot com>
- Cc: <libc-alpha at sourceware dot org>
- Date: Fri, 19 Dec 2014 21:49:17 +0000
- Subject: Re: [Patch, MIPS] Modify __mpn routines for mips32r6/mips64r6
- Authentication-results: sourceware.org; auth=none
- References: <bb9daa48-0742-4bae-b5f8-7f5f0a23f9ae at BAMAIL02 dot ba dot imgtec dot org>
On Fri, 19 Dec 2014, Steve Ellcey wrote:
> Support for mips32r6 and mips64r6 has been checked into GCC and binutils
> and there are a few changes needed for glibc as well. Here is the first
> of the patches, it replaces the use of multu with mulu/muhu in the __mpn
> multi-precision math routines. multu, which put the results in the high
> and low registers is not supported in mip32r6 and mips64r6 and has been
> replaced by mulu/muhu which put the high and low results into registers
> specified in the instruction.
>
> Tested with the mips32r6/mips64r6 GCC, binutils and qemu simulator.
>
> OK to checkin?
OK. If the same code is present in current GMP (more generally, if GMP
has MIPS assembler code affected by this issue) you'll want to submit the
patch there as well.
--
Joseph S. Myers
joseph@codesourcery.com