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Check for 64 FP instructions availability in libm before using them 

Currently, double precision math functions in newlib/libm/machine/arm detect whether neon instructions can be used for double precision computation by checking the architecture version (>= 8) and the availability of floating-point instructions. However, these instructions would not be available if targeting fpv5-sp-d16 as the FPU, which by definition does not have 64bit float instructions. This patch adds a check that __ARM_FP advertises 64bit float instructions.

        * libm/machine/arm/s_ceil.c: Also check that 64bit FP instructions are
        available in the guard.
        * libm/machine/arm/s_floor.c: Likewise.
        * libm/machine/arm/s_nearbyint.c: Likewise.
        * libm/machine/arm/s_rint.c: Likewise.
        * libm/machine/arm/s_round.c: Likewise.
        * libm/machine/arm/s_trunc.c: Likewise.
This commit is contained in:
Thomas Preud'homme 2015-12-09 11:00:55 +08:00 committed by Corinna Vinschen
parent 91a8eacec6
commit 5b9873fa72
7 changed files with 16 additions and 6 deletions
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10
newlib/ChangeLog
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@ -1,3 +1,13 @@
2015-12-09 Thomas Preud'homme <thomas.preudhomme@arm.com>
* libm/machine/arm/s_ceil.c: Also check that 64bit FP instructions are
available in the guard.
* libm/machine/arm/s_floor.c: Likewise.
* libm/machine/arm/s_nearbyint.c: Likewise.
* libm/machine/arm/s_rint.c: Likewise.
* libm/machine/arm/s_round.c: Likewise.
* libm/machine/arm/s_trunc.c: Likewise.
2015-12-08 Corinna Vinschen <corinna@vinschen.de>
* libc/stdio/fclose.c (_fclose_r): Make _flockfile/_funlockfile calls

2
newlib/libm/machine/arm/s_ceil.c
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@ -24,7 +24,7 @@
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
#if __ARM_ARCH >= 8 && !defined (__SOFTFP__)
#if __ARM_ARCH >= 8 && (__ARM_FP & 0x8) && !defined (__SOFTFP__)
#include <math.h>
double

2
newlib/libm/machine/arm/s_floor.c
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@ -24,7 +24,7 @@
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
#if __ARM_ARCH >= 8 && !defined (__SOFTFP__)
#if __ARM_ARCH >= 8 && (__ARM_FP & 0x8) && !defined (__SOFTFP__)
#include <math.h>
double

2
newlib/libm/machine/arm/s_nearbyint.c
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@ -24,7 +24,7 @@
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
#if __ARM_ARCH >= 8 && !defined (__SOFTFP__)
#if __ARM_ARCH >= 8 && (__ARM_FP & 0x8) && !defined (__SOFTFP__)
#include <math.h>
double

2
newlib/libm/machine/arm/s_rint.c
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@ -24,7 +24,7 @@
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
#if __ARM_ARCH >= 8 && !defined (__SOFTFP__)
#if __ARM_ARCH >= 8 && (__ARM_FP & 0x8) && !defined (__SOFTFP__)
#include <math.h>
double

2
newlib/libm/machine/arm/s_round.c
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@ -24,7 +24,7 @@
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
#if __ARM_ARCH >= 8 && !defined (__SOFTFP__)
#if __ARM_ARCH >= 8 && (__ARM_FP & 0x8) && !defined (__SOFTFP__)
#include <math.h>
double

2
newlib/libm/machine/arm/s_trunc.c
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@ -24,7 +24,7 @@
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
#if __ARM_ARCH >= 8 && !defined (__SOFTFP__)
#if __ARM_ARCH >= 8 && (__ARM_FP & 0x8) && !defined (__SOFTFP__)
#include <math.h>
double