Remove support for PowerPC SPE extension (powerpc*-*-*gnuspe*).

GCC 9 dropped support for the SPE extensions to PowerPC, which means
powerpc*-*-*gnuspe* configurations are no longer buildable with that
compiler.  This ISA extension was peculiar to the “e500” line of
embedded PowerPC chips, which, as far as I can tell, are no longer
being manufactured, so I think we should follow suit.

This patch was developed by grepping for “e500”, “__SPE__”, and
“__NO_FPRS__”, and may not eliminate every vestige of SPE support.
Most uses of __NO_FPRS__ are left alone, as they are relevant to
normal embedded PowerPC with soft-float.

        * sysdeps/powerpc/preconfigure: Error out on powerpc-*-*gnuspe*
        host type.
        * scripts/build-many-glibcs.py: Remove powerpc-*-linux-gnuspe
        and powerpc-*-linux-gnuspe-e500v1 from list of build configurations.

        * sysdeps/powerpc/powerpc32/e500: Recursively delete.
        * sysdeps/unix/sysv/linux/powerpc/powerpc32/e500: Recursively delete.
        * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/context-e500.h:
        Delete.

        * sysdeps/powerpc/fpu_control.h: Remove SPE variant.
        Issue an #error if used with a compiler in SPE-float mode.
        * sysdeps/powerpc/powerpc32/__longjmp_common.S
        * sysdeps/powerpc/powerpc32/setjmp_common.S
        * sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext-common.S
        * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/getcontext.S
        * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/setcontext.S
        * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/swapcontext.S
        * sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext-common.S
        * sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S:
        Remove code to preserve SPE register state.

        * sysdeps/unix/sysv/linux/powerpc/elision-lock.c
        * sysdeps/unix/sysv/linux/powerpc/elision-trylock.c
        * sysdeps/unix/sysv/linux/powerpc/elision-unlock.c
        Remove __SPE__ ifndefs.

1 files changed, 0 insertions, 50 deletions

diff --git a/sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feclearexcept.c b/sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feclearexcept.c
deleted file mode 100644
index b94d302353..0000000000
--- a/sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feclearexcept.c
+++ /dev/null
@@ -1,50 +0,0 @@
-/* Clear floating-point exceptions for atomic compound assignment.
-   e500 version.
-   Copyright (C) 2004-2019 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/>.  */
-
-#include <fenv_libc.h>
-#include <stdlib.h>
-#include <sysdep.h>
-#include <sys/prctl.h>
-
-void
-__atomic_feclearexcept (void)
-{
-  unsigned int fpescr, old_fpescr;
-
-  /* Get the current state.  */
-  old_fpescr = fpescr = fegetenv_register ();
-
-  /* Clear the relevant bits.  */
-  fpescr &= ~SPEFSCR_ALL_EXCEPT;
-
-  /* Put the new state in effect.  */
-  fesetenv_register (fpescr);
-
-  /* Let the kernel know if the "invalid" or "underflow" bit was
-     cleared.  */
-  if (old_fpescr & (SPEFSCR_FINVS | SPEFSCR_FUNFS))
-    {
-      int pflags __attribute__ ((__unused__)), r;
-      INTERNAL_SYSCALL_DECL (err);
-
-      r = INTERNAL_SYSCALL (prctl, err, 2, PR_GET_FPEXC, &pflags);
-      if (INTERNAL_SYSCALL_ERROR_P (r, err))
-	abort ();
-    }
-}