powerpc: add single instruction fabs, fabsf, fma, fmaf, sqrt, sqrtf

These are only available on hard float target and sqrt is not available
in the base ISA, so further check is used.

src/math/powerpc/fabs.c

@@ -0,0 +1,15 @@
+#include <math.h>
+
+#ifdef _SOFT_FLOAT
+
+#include "../fabs.c"
+
+#else
+
+double fabs(double x)
+{
+	__asm__ ("fabs %0, %1" : "=d"(x) : "d"(x));
+	return x;
+}
+
+#endif

src/math/powerpc/fabsf.c

@@ -0,0 +1,15 @@
+#include <math.h>
+
+#ifdef _SOFT_FLOAT
+
+#include "../fabsf.c"
+
+#else
+
+float fabsf(float x)
+{
+	__asm__ ("fabs %0, %1" : "=f"(x) : "f"(x));
+	return x;
+}
+
+#endif

src/math/powerpc/fma.c

@@ -0,0 +1,15 @@
+#include <math.h>
+
+#ifdef _SOFT_FLOAT
+
+#include "../fma.c"
+
+#else
+
+double fma(double x, double y, double z)
+{
+	__asm__("fmadd %0, %1, %2, %3" : "=d"(x) : "d"(x), "d"(y), "d"(z));
+	return x;
+}
+
+#endif

src/math/powerpc/fmaf.c

@@ -0,0 +1,15 @@
+#include <math.h>
+
+#ifdef _SOFT_FLOAT
+
+#include "../fmaf.c"
+
+#else
+
+float fmaf(float x, float y, float z)
+{
+	__asm__("fmadds %0, %1, %2, %3" : "=f"(x) : "f"(x), "f"(y), "f"(z));
+	return x;
+}
+
+#endif

src/math/powerpc/sqrt.c

@@ -0,0 +1,15 @@
+#include <math.h>
+
+#if !defined _SOFT_FLOAT && defined _ARCH_PPCSQ
+
+double sqrt(double x)
+{
+	__asm__ ("fsqrt %0, %1\n" : "=d" (x) : "d" (x));
+	return x;
+}
+
+#else
+
+#include "../sqrt.c"
+
+#endif

src/math/powerpc/sqrtf.c

@@ -0,0 +1,15 @@
+#include <math.h>
+
+#if !defined _SOFT_FLOAT && defined _ARCH_PPCSQ
+
+float sqrtf(float x)
+{
+	__asm__ ("fsqrts %0, %1\n" : "=f" (x) : "f" (x));
+	return x;
+}
+
+#else
+
+#include "../sqrtf.c"
+
+#endif