1 files changed, 92 insertions, 0 deletions
diff --git a/gcc-4.9/libgcc/config/rs6000/darwin-fpsave.S b/gcc-4.9/libgcc/config/rs6000/darwin-fpsave.S
new file mode 100644
index 000000000..510a9d650
--- /dev/null
+++ b/gcc-4.9/libgcc/config/rs6000/darwin-fpsave.S
@@ -0,0 +1,92 @@
+/*  This file contains the floating-point save and restore routines.
+ *
+ *   Copyright (C) 2004-2014 Free Software Foundation, Inc.
+ * 
+ * This file is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 3, or (at your option) any
+ * later version.
+ * 
+ * This file is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ * 
+ * Under Section 7 of GPL version 3, you are granted additional
+ * permissions described in the GCC Runtime Library Exception, version
+ * 3.1, as published by the Free Software Foundation.
+ *
+ * You should have received a copy of the GNU General Public License and
+ * a copy of the GCC Runtime Library Exception along with this program;
+ * see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ */ 
+
+/* THE SAVE AND RESTORE ROUTINES CAN HAVE ONLY ONE GLOBALLY VISIBLE
+   ENTRY POINT - callers have to jump to "saveFP+60" to save f29..f31,
+   for example.  For FP reg saves/restores, it takes one instruction
+   (4 bytes) to do the operation; for Vector regs, 2 instructions are
+   required (8 bytes.)
+
+   MORAL: DO NOT MESS AROUND WITH THESE FUNCTIONS!  */
+
+#include "darwin-asm.h"
+
+.text
+	.align 2
+
+/* saveFP saves R0 -- assumed to be the callers LR -- to 8/16(R1).  */
+
+.private_extern saveFP
+saveFP:
+	stfd f14,-144(r1)
+	stfd f15,-136(r1)
+	stfd f16,-128(r1)
+	stfd f17,-120(r1)
+	stfd f18,-112(r1)
+	stfd f19,-104(r1)
+	stfd f20,-96(r1)
+	stfd f21,-88(r1)
+	stfd f22,-80(r1)
+	stfd f23,-72(r1)
+	stfd f24,-64(r1)
+	stfd f25,-56(r1)
+	stfd f26,-48(r1)
+	stfd f27,-40(r1)
+	stfd f28,-32(r1)
+	stfd f29,-24(r1)
+	stfd f30,-16(r1)
+	stfd f31,-8(r1)
+	stg  r0,SAVED_LR_OFFSET(r1)
+	blr
+
+/* restFP restores the caller`s LR from 8/16(R1).  Note that the code for
+   this starts at the offset of F30 restoration, so calling this
+   routine in an attempt to restore only F31 WILL NOT WORK (it would
+   be a stupid thing to do, anyway.)  */
+
+.private_extern restFP
+restFP:
+	lfd f14,-144(r1)
+	lfd f15,-136(r1)
+	lfd f16,-128(r1)
+	lfd f17,-120(r1)
+	lfd f18,-112(r1)
+	lfd f19,-104(r1)
+	lfd f20,-96(r1)
+	lfd f21,-88(r1)
+	lfd f22,-80(r1)
+	lfd f23,-72(r1)
+	lfd f24,-64(r1)
+	lfd f25,-56(r1)
+	lfd f26,-48(r1)
+	lfd f27,-40(r1)
+	lfd f28,-32(r1)
+	lfd f29,-24(r1)
+			/* <OFFSET OF F30 RESTORE> restore callers LR  */
+	lg r0,SAVED_LR_OFFSET(r1)
+	lfd f30,-16(r1)
+			/* and prepare for return to caller  */
+	mtlr r0	
+	lfd f31,-8(r1)
+	blr