1 files changed, 81 insertions, 0 deletions
diff --git a/sysdeps/aarch64/fpu/fpu_control.h b/sysdeps/aarch64/fpu/fpu_control.h
new file mode 100644
index 0000000000..1e9d28bb26
--- /dev/null
+++ b/sysdeps/aarch64/fpu/fpu_control.h
@@ -0,0 +1,81 @@
+/* Copyright (C) 1996-2015 Free Software Foundation, Inc.
+
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _AARCH64_FPU_CONTROL_H
+#define _AARCH64_FPU_CONTROL_H
+
+/* Macros for accessing the FPCR and FPSR.  */
+
+#define _FPU_GETCW(fpcr) \
+  __asm__ __volatile__ ("mrs	%0, fpcr" : "=r" (fpcr))
+
+#define _FPU_SETCW(fpcr) \
+  __asm__ __volatile__ ("msr	fpcr, %0" : : "r" (fpcr))
+
+#define _FPU_GETFPSR(fpsr) \
+  __asm__ __volatile__ ("mrs	%0, fpsr" : "=r" (fpsr))
+
+#define _FPU_SETFPSR(fpsr) \
+  __asm__ __volatile__ ("msr	fpsr, %0" : : "r" (fpsr))
+
+/* Reserved bits should be preserved when modifying register
+   contents. These two masks indicate which bits in each of FPCR and
+   FPSR should not be changed.  */
+
+#define _FPU_RESERVED		0xfe0fe0ff
+#define _FPU_FPSR_RESERVED	0x0fffffe0
+
+#define _FPU_DEFAULT		0x00000000
+#define _FPU_FPSR_DEFAULT	0x00000000
+
+/* Layout of FPCR and FPSR:
+
+   |       |       |       |       |       |       |       |
+   0 0 0 0 1 1 1 0 0 0 0 0 1 0 0 0 1 1 1 0 0 0 0 0 1 1 1 0 0 0 0 0
+   s s s s s                                       s     s s s s s
+             c c c c c c c               c c c c c
+   N Z C V Q A D F R R S S S L L L I U U I U O D I I U U I U O D I
+           C H N Z M M T T B E E E D N N X F F Z O D N N X F F Z O
+             P     O O R R Z N N N E K K E E E E E C K K C C C C C
+                   D D I I P
+                   E E D D
+                       E E
+ */
+
+#define _FPU_FPCR_RM_MASK  0xc00000
+
+#define _FPU_FPCR_MASK_IXE 0x1000
+#define _FPU_FPCR_MASK_UFE 0x0800
+#define _FPU_FPCR_MASK_OFE 0x0400
+#define _FPU_FPCR_MASK_DZE 0x0200
+#define _FPU_FPCR_MASK_IOE 0x0100
+
+#define _FPU_FPCR_IEEE                       \
+  (_FPU_DEFAULT  | _FPU_FPCR_MASK_IXE |	     \
+   _FPU_FPCR_MASK_UFE | _FPU_FPCR_MASK_OFE | \
+   _FPU_FPCR_MASK_DZE | _FPU_FPCR_MASK_IOE)
+
+#define _FPU_FPSR_IEEE 0
+
+typedef unsigned int fpu_control_t;
+typedef unsigned int fpu_fpsr_t;
+
+/* Default control word set at startup.  */
+extern fpu_control_t __fpu_control;
+
+#endif