[OE-core] [PATCH 2/3] powerpc e500: set -mfloat-gprs=double

[Khem Raj]

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On 03/27/2012 12:51 PM, Christopher Larson wrote:
> From: Christopher Larson <chris_larson at 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 at 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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