powerpc e500: set -mfloat-gprs=double

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.

(From OE-Core rev: 32bb6afe3e6f3e374e4d14edc238b46a90d44169)

Signed-off-by: Christopher Larson <chris_larson@mentor.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

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 1326720834..feb1967b4f 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)}"
 
 TARGET_FPU = "ppc-efs"
 
diff --git a/meta/conf/machine/include/tune-ppce500v2.inc b/meta/conf/machine/include/tune-ppce500v2.inc
index e7b51c6d03..f0158d0440 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"