Date: Tue, 14 Sep 2021 18:11:56 +0100 From: Andrew Turner <andrew@fubar.geek.nz> To: Ronald Klop <ronald-lists@klop.ws> Cc: Andrew Turner <andrew@FreeBSD.org>, "dev-commits-src-all@freebsd.org" <dev-commits-src-all@FreeBSD.org>, "src-committers@freebsd.org" <src-committers@FreeBSD.org>, "dev-commits-src-main@freebsd.org" <dev-commits-src-main@FreeBSD.org> Subject: Re: git: fd860ace3bde - main - Remove the DN flag from the initial arm64 fpcr value Message-ID: <7E354DA3-CC3D-4240-A4EF-320AD7728C59@fubar.geek.nz> In-Reply-To: <629177790.2.1631626955525@mailrelay> References: <202109141253.18ECrVoR016500@gitrepo.freebsd.org> <629177790.2.1631626955525@mailrelay>
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I found it with the lldb test suite. I also checked the value Mac and Linux initialised the register to & found it to be zero. Andrew > On 14 Sep 2021, at 14:42, Ronald Klop <ronald-lists@klop.ws> wrote: > > Hi, > > Do you have an example of this software? Just for my understanding. > > Ronald. > > Van: Andrew Turner <andrew@FreeBSD.org> > Datum: dinsdag, 14 september 2021 14:53 > Aan: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org > Onderwerp: git: fd860ace3bde - main - Remove the DN flag from the initial arm64 fpcr value > > The branch main has been updated by andrew: > > URL: https://cgit.FreeBSD.org/src/commit/?id=fd860ace3bded96bee0e5c090a5a4d8b085b700c <https://cgit.freebsd.org/src/commit/?id=fd860ace3bded96bee0e5c090a5a4d8b085b700c>; > > commit fd860ace3bded96bee0e5c090a5a4d8b085b700c > Author: Andrew Turner <andrew@FreeBSD.org> > AuthorDate: 2021-08-25 10:05:55 +0000 > Commit: Andrew Turner <andrew@FreeBSD.org> > CommitDate: 2021-09-14 12:52:48 +0000 > > Remove the DN flag from the initial arm64 fpcr value > > This fixes software that expects NaN values to propagate. > > Sponsored by: The FreeBSD Foundation > --- > sys/arm64/include/vfp.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/sys/arm64/include/vfp.h b/sys/arm64/include/vfp.h > index 629b1b7fadf4..bee0121d9d2a 100644 > --- a/sys/arm64/include/vfp.h > +++ b/sys/arm64/include/vfp.h > @@ -35,7 +35,7 @@ > #define VFPCR_AHP (0x04000000) /* alt. half-precision: */ > #define VFPCR_DN (0x02000000) /* default NaN enable */ > #define VFPCR_FZ (0x01000000) /* flush to zero enabled */ > -#define VFPCR_INIT VFPCR_DN /* Default fpcr after exec */ > +#define VFPCR_INIT 0 /* Default fpcr after exec */ > > #define VFPCR_RMODE_OFF 22 /* rounding mode offset */ > #define VFPCR_RMODE_MASK (0x00c00000) /* rounding mode mask */ > _______________________________________________ > dev-commits-src-all@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/dev-commits-src-all <https://lists.freebsd.org/mailman/listinfo/dev-commits-src-all>; > To unsubscribe, send any mail to "dev-commits-src-all-unsubscribe@freebsd.org"help
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