From: Khem Raj <raj.khem@gmail.com>
To: openembedded-core@lists.openembedded.org
Subject: Re: [PATCH 2/3] powerpc e500: set -mfloat-gprs=double
Date: Fri, 06 Apr 2012 22:40:10 -0700 [thread overview]
Message-ID: <4F7FD33A.9070801@gmail.com> (raw)
In-Reply-To: <1332877869-12195-2-git-send-email-kergoth@gmail.com>
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On 03/27/2012 12:51 PM, Christopher Larson wrote:
> From: Christopher Larson <chris_larson@mentor.com>
>
> Use of FPRs instead of GPRs is incompatible with e500/SPE, so let's
> be explicit about the use of GPRs to avoid potential errors. For
> example, with the Sourcery G++ toolchain, one can hit:
> conftest.c:1:0: error: E500 and FPRs not supported.
>
> Signed-off-by: Christopher Larson <chris_larson@mentor.com> ---
> meta/conf/machine/include/tune-ppce500.inc | 2 +-
> meta/conf/machine/include/tune-ppce500v2.inc | 2 +- 2 files
> changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/meta/conf/machine/include/tune-ppce500.inc
> b/meta/conf/machine/include/tune-ppce500.inc index 1326720..feb1967
> 100644 --- a/meta/conf/machine/include/tune-ppce500.inc +++
> b/meta/conf/machine/include/tune-ppce500.inc @@ -7,7 +7,7 @@
> TUNE_CCARGS += "${@bb.utils.contains("TUNE_FEATURES", "ppce500",
> "-mcpu=8540", " TUNE_PKGARCH_tune-ppce500 = "ppce500"
>
> TUNEVALID[spe] = "Enable SPE ABI extensions" -TUNE_CCARGS +=
> "${@bb.utils.contains("TUNE_FEATURES", "spe", "-mabi=spe -mspe",
> "", d)}" +TUNE_CCARGS += "${@bb.utils.contains("TUNE_FEATURES",
> "spe", "-mabi=spe -mspe -mfloat-gprs=double", "", d)}"
>
IIRC e500v1 does not have double precision floating point support.
> TARGET_FPU = "ppc-efs"
>
> diff --git a/meta/conf/machine/include/tune-ppce500v2.inc
> b/meta/conf/machine/include/tune-ppce500v2.inc index
> e7b51c6..f0158d0 100644 ---
> a/meta/conf/machine/include/tune-ppce500v2.inc +++
> b/meta/conf/machine/include/tune-ppce500v2.inc @@ -7,7 +7,7 @@
> TUNE_CCARGS += "${@bb.utils.contains("TUNE_FEATURES", "ppce500v2",
> "-mcpu=8548", TUNE_PKGARCH_tune-ppce500v2 = "ppce500v2"
>
> TUNEVALID[spe] = "Enable SPE ABI extensions" -TUNE_CCARGS +=
> "${@bb.utils.contains("TUNE_FEATURES", "spe", "-mabi=spe -mspe",
> "", d)}" +TUNE_CCARGS += '${@bb.utils.contains("TUNE_FEATURES",
> "spe", "-mabi=spe -mspe -mfloat-gprs=double", "", d)}'
>
> TARGET_FPU = "ppc-efd"
>
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next prev parent reply other threads:[~2012-04-07 5:49 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-27 19:51 [PATCH 1/3] external-csl: add mapping for powerpc-nf Christopher Larson
2012-03-27 19:51 ` [PATCH 2/3] powerpc e500: set -mfloat-gprs=double Christopher Larson
2012-04-07 5:40 ` Khem Raj [this message]
2012-04-07 16:12 ` Chris Larson
2012-03-27 19:51 ` [PATCH 3/3] powerpc: define TUNE_PKGARCH for powerpc/powerpc-nf Christopher Larson
2012-03-27 20:22 ` Mark Hatle
2012-03-27 21:05 ` Chris Larson
2012-03-27 21:50 ` Mark Hatle
2012-03-27 21:57 ` Christopher Larson
2012-03-27 22:13 ` Mark Hatle
2012-03-27 22:16 ` Chris Larson
2012-03-29 4:47 ` McClintock Matthew-B29882
2012-03-29 4:54 ` Chris Larson
2012-03-29 5:07 ` McClintock Matthew-B29882
2012-03-29 15:38 ` Mark Hatle
2012-03-29 15:54 ` Chris Larson
2012-03-29 15:58 ` McClintock Matthew-B29882
2012-03-29 16:40 ` Mark Hatle
2012-03-29 18:38 ` Chris Larson
2012-03-29 18:50 ` McClintock Matthew-B29882
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