If we built POST on PPC's that didn't enable CONFIG_SYS_POST_FPU we'd get the following warning with newer toolchains:
powerpc-linux-gnu-ld: Warning: lib_powerpc/fpu/libpostpowerpcfpu.o uses hard float, libpost.o uses soft float
We actually worked around this sometime ago with the following commit:
commit ce82ff05388b5ddafdf6082ef0776cce72c40b1c Author: Yuri Tikhonov yur@emcraft.com Date: Sat Dec 20 14:54:21 2008 +0300
FPU POST: fix warnings when building with 2.18 binutils
However, this only took into effect if CONFIG_SYS_POST_FPU was enabled. We can simply move the GNU_FPOST_ATTR out of the CONFIG_SYS_POST_FPU ifdef block to address the issue.
Signed-off-by: Kumar Gala galak@kernel.crashing.org ---
Wolfgang, I request we think about include this patch in v2011.03 tree so we can all stop getting these build warnings :)
- k
post/lib_powerpc/fpu/20001122-1.c | 4 ++-- post/lib_powerpc/fpu/20010114-2.c | 4 ++-- post/lib_powerpc/fpu/20010226-1.c | 4 ++-- post/lib_powerpc/fpu/980619-1.c | 4 ++-- post/lib_powerpc/fpu/acc1.c | 4 ++-- post/lib_powerpc/fpu/compare-fp-1.c | 4 ++-- post/lib_powerpc/fpu/fpu.c | 4 ++-- post/lib_powerpc/fpu/mul-subnormal-single-1.c | 4 ++-- 8 files changed, 16 insertions(+), 16 deletions(-)
diff --git a/post/lib_powerpc/fpu/20001122-1.c b/post/lib_powerpc/fpu/20001122-1.c index bef80c5..4af300d 100644 --- a/post/lib_powerpc/fpu/20001122-1.c +++ b/post/lib_powerpc/fpu/20001122-1.c @@ -28,10 +28,10 @@
#include <post.h>
-#if CONFIG_POST & CONFIG_SYS_POST_FPU - GNU_FPOST_ATTR
+#if CONFIG_POST & CONFIG_SYS_POST_FPU + int fpu_post_test_math1 (void) { volatile double a, *p; diff --git a/post/lib_powerpc/fpu/20010114-2.c b/post/lib_powerpc/fpu/20010114-2.c index ee564e8..dab4d7e 100644 --- a/post/lib_powerpc/fpu/20010114-2.c +++ b/post/lib_powerpc/fpu/20010114-2.c @@ -28,10 +28,10 @@
#include <post.h>
-#if CONFIG_POST & CONFIG_SYS_POST_FPU - GNU_FPOST_ATTR
+#if CONFIG_POST & CONFIG_SYS_POST_FPU + static float rintf (float x) { volatile float TWO23 = 8388608.0; diff --git a/post/lib_powerpc/fpu/20010226-1.c b/post/lib_powerpc/fpu/20010226-1.c index 099ca4a..c644bc9 100644 --- a/post/lib_powerpc/fpu/20010226-1.c +++ b/post/lib_powerpc/fpu/20010226-1.c @@ -28,10 +28,10 @@
#include <post.h>
-#if CONFIG_POST & CONFIG_SYS_POST_FPU - GNU_FPOST_ATTR
+#if CONFIG_POST & CONFIG_SYS_POST_FPU + int fpu_post_test_math3 (void) { volatile long double dfrom = 1.1; diff --git a/post/lib_powerpc/fpu/980619-1.c b/post/lib_powerpc/fpu/980619-1.c index 46a31ae..0c195c1 100644 --- a/post/lib_powerpc/fpu/980619-1.c +++ b/post/lib_powerpc/fpu/980619-1.c @@ -28,10 +28,10 @@
#include <post.h>
-#if CONFIG_POST & CONFIG_SYS_POST_FPU - GNU_FPOST_ATTR
+#if CONFIG_POST & CONFIG_SYS_POST_FPU + int fpu_post_test_math4 (void) { volatile float reale = 1.0f; diff --git a/post/lib_powerpc/fpu/acc1.c b/post/lib_powerpc/fpu/acc1.c index 9fca9b3..4dc1362 100644 --- a/post/lib_powerpc/fpu/acc1.c +++ b/post/lib_powerpc/fpu/acc1.c @@ -28,10 +28,10 @@
#include <post.h>
-#if CONFIG_POST & CONFIG_SYS_POST_FPU - GNU_FPOST_ATTR
+#if CONFIG_POST & CONFIG_SYS_POST_FPU + static double func (const double *array) { double d = *array; diff --git a/post/lib_powerpc/fpu/compare-fp-1.c b/post/lib_powerpc/fpu/compare-fp-1.c index f836b29..a0859f8 100644 --- a/post/lib_powerpc/fpu/compare-fp-1.c +++ b/post/lib_powerpc/fpu/compare-fp-1.c @@ -30,10 +30,10 @@
#include <post.h>
-#if CONFIG_POST & CONFIG_SYS_POST_FPU - GNU_FPOST_ATTR
+#if CONFIG_POST & CONFIG_SYS_POST_FPU + static int failed;
#define TEST(c) if ((c) != ok) failed++ diff --git a/post/lib_powerpc/fpu/fpu.c b/post/lib_powerpc/fpu/fpu.c index 3f3adea..a4369f1 100644 --- a/post/lib_powerpc/fpu/fpu.c +++ b/post/lib_powerpc/fpu/fpu.c @@ -36,12 +36,12 @@
#include <post.h>
+GNU_FPOST_ATTR + #if CONFIG_POST & CONFIG_SYS_POST_FPU
#include <watchdog.h>
-GNU_FPOST_ATTR - extern int fpu_status (void); extern void fpu_enable (void); extern void fpu_disable (void); diff --git a/post/lib_powerpc/fpu/mul-subnormal-single-1.c b/post/lib_powerpc/fpu/mul-subnormal-single-1.c index 1f3732d..23a3f30 100644 --- a/post/lib_powerpc/fpu/mul-subnormal-single-1.c +++ b/post/lib_powerpc/fpu/mul-subnormal-single-1.c @@ -30,10 +30,10 @@
#include <post.h>
-#if CONFIG_POST & CONFIG_SYS_POST_FPU - GNU_FPOST_ATTR
+#if CONFIG_POST & CONFIG_SYS_POST_FPU + union uf { unsigned int u;