Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 99 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/powerpc/powerpc32/e500/nofpu/fenv_libc.h b/REORG.TODO/sysdeps/powerpc/powerpc32/e500/nofpu/fenv_libc.h
new file mode 100644
index 0000000000..13437f8052
--- /dev/null
+++ b/REORG.TODO/sysdeps/powerpc/powerpc32/e500/nofpu/fenv_libc.h
@@ -0,0 +1,99 @@
+/* Internal libc stuff for floating point environment routines.  e500 version.
+   Copyright (C) 2004-2017 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 _FENV_LIBC_H
+#define _FENV_LIBC_H	1
+
+#include <fenv.h>
+
+int __feraiseexcept_spe (int);
+libm_hidden_proto (__feraiseexcept_spe)
+
+int __feraiseexcept_soft (int);
+libc_hidden_proto (__feraiseexcept_soft)
+
+int __fexcepts_to_spe (int);
+libm_hidden_proto (__fexcepts_to_spe)
+
+int __fexcepts_from_spe (int);
+libm_hidden_proto (__fexcepts_from_spe)
+
+int __fexcepts_to_prctl (int);
+libm_hidden_proto (__fexcepts_to_prctl)
+
+int __fexcepts_from_prctl (int);
+libm_hidden_proto (__fexcepts_from_prctl)
+
+void __fe_note_change (void);
+libm_hidden_proto (__fe_note_change)
+
+/* Equivalent to fegetenv, but returns an unsigned int instead of
+   taking a pointer.  */
+#define fegetenv_register() \
+  ({ unsigned int fscr; asm volatile ("mfspefscr %0" : "=r" (fscr)); fscr; })
+
+/* Equivalent to fesetenv, but takes an unsigned int instead of a
+   pointer.  */
+#define fesetenv_register(fscr) \
+  ({ asm volatile ("mtspefscr %0" : : "r" (fscr)); })
+
+typedef union
+{
+  fenv_t fenv;
+  unsigned int l[2];
+} fenv_union_t;
+
+/* Definitions of all the SPEFSCR bit numbers.  */
+enum {
+  SPEFSCR_SOVH          = 0x80000000,
+  SPEFSCR_OVH           = 0x40000000,
+  SPEFSCR_FGH           = 0x20000000,
+  SPEFSCR_FXH           = 0x10000000,
+  SPEFSCR_FINVH         = 0x08000000,
+  SPEFSCR_FDBZH         = 0x04000000,
+  SPEFSCR_FUNFH         = 0x02000000,
+  SPEFSCR_FOVFH         = 0x01000000,
+  /* 2 unused bits.  */
+  SPEFSCR_FINXS         = 0x00200000,
+  SPEFSCR_FINVS         = 0x00100000,
+  SPEFSCR_FDBZS         = 0x00080000,
+  SPEFSCR_FUNFS         = 0x00040000,
+  SPEFSCR_FOVFS         = 0x00020000,
+  /* Combination of the exception bits.  */
+  SPEFSCR_ALL_EXCEPT    = 0x003e0000,
+  SPEFSCR_MODE          = 0x00010000,
+  SPEFSCR_SOV           = 0x00008000,
+  SPEFSCR_OV            = 0x00004000,
+  SPEFSCR_FG            = 0x00002000,
+  SPEFSCR_FX            = 0x00001000,
+  SPEFSCR_FINV          = 0x00000800,
+  SPEFSCR_FDBZ          = 0x00000400,
+  SPEFSCR_FUNF          = 0x00000200,
+  SPEFSCR_FOVF          = 0x00000100,
+  /* 1 unused bit.  */
+  SPEFSCR_FINXE         = 0x00000040,
+  SPEFSCR_FINVE         = 0x00000020,
+  SPEFSCR_FDBZE         = 0x00000010,
+  SPEFSCR_FUNFE         = 0x00000008,
+  SPEFSCR_FOVFE         = 0x00000004,
+  /* Combination of the exception trap enable bits.  */
+  SPEFSCR_ALL_EXCEPT_ENABLE = 0x0000007c,
+  SPEFSCR_FRMC          = 0x00000003
+};
+
+#endif /* fenv_libc.h */