Import libcompiler_rt into HEAD and add Makefiles.

Obtained from:	user/ed/compiler-rt

1 files changed, 24 insertions, 0 deletions

diff --git a/contrib/compiler-rt/lib/arm/fixdfsivfp.S b/contrib/compiler-rt/lib/arm/fixdfsivfp.S
new file mode 100644
index 0000000..30458cc
--- /dev/null
+++ b/contrib/compiler-rt/lib/arm/fixdfsivfp.S
@@ -0,0 +1,24 @@
+//===-- fixdfsivfp.S - Implement fixdfsivfp -----------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "../assembly.h"
+
+//
+// extern int __fixdfsivfp(double a);
+//
+// Converts double precision float to a 32-bit int rounding towards zero.
+// Uses Darwin calling convention where a double precision parameter is 
+// passed in GPR register pair.
+//
+	.align 2
+DEFINE_COMPILERRT_FUNCTION(__fixdfsivfp)
+	fmdrr	d7, r0, r1    // load double register from R0/R1
+	ftosizd	s15, d7       // convert double to 32-bit int into s15
+	fmrs	r0, s15	      // move s15 to result register
+	bx	lr