Import libcompiler_rt into HEAD and add Makefiles.

Obtained from:	user/ed/compiler-rt

1 files changed, 46 insertions, 0 deletions

diff --git a/contrib/compiler-rt/lib/ppc/DD.h b/contrib/compiler-rt/lib/ppc/DD.h
new file mode 100644
index 0000000..9ecd1f5
--- /dev/null
+++ b/contrib/compiler-rt/lib/ppc/DD.h
@@ -0,0 +1,46 @@
+#ifndef __DD_HEADER
+#define __DD_HEADER
+
+#include <stdint.h>
+
+typedef union {
+	long double ld;
+	struct {
+		double hi;
+		double lo;
+	}s;
+}DD;
+
+typedef union { 
+	double d;
+	uint64_t x;
+} doublebits;
+
+#define LOWORDER(xy,xHi,xLo,yHi,yLo) \
+	(((((xHi)*(yHi) - (xy)) + (xHi)*(yLo)) + (xLo)*(yHi)) + (xLo)*(yLo))
+
+static inline double __attribute__((always_inline))
+fabs(double x)
+{
+	doublebits result = { .d = x };
+	result.x &= UINT64_C(0x7fffffffffffffff);
+	return result.d;
+}
+
+static inline double __attribute__((always_inline))
+high26bits(double x)
+{
+	doublebits result = { .d = x };
+	result.x &= UINT64_C(0xfffffffff8000000);
+	return result.d;
+}
+
+static inline int __attribute__((always_inline))
+different_sign(double x, double y)
+{
+	doublebits xsignbit = { .d = x }, ysignbit = { .d = y };
+	int result = (int)(xsignbit.x >> 63) ^ (int)(ysignbit.x >> 63);
+	return result;
+}
+
+#endif /* __DD_HEADER */