2.5-18.1

1 files changed, 0 insertions, 87 deletions

diff --git a/sysdeps/m68k/fpu/switch/switch.c b/sysdeps/m68k/fpu/switch/switch.c
deleted file mode 100644
index e0558176dc..0000000000
--- a/sysdeps/m68k/fpu/switch/switch.c
+++ /dev/null
@@ -1,87 +0,0 @@
-/* Copyright (C) 1991, 1992, 1997 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, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
-
-#include <signal.h>
-#include <68881-sw.h>
-
-
-/* The signal that is sent when a 68881 instruction
-   is executed and there is no 68881.  */
-#ifndef	TRAPSIG
-#define	TRAPSIG	SIGILL
-#endif
-
-/* Zero if no 68881, one if we have a 68881, or -1 if we don't know yet.  */
-static int have_fpu = -1;
-
-
-/* Signal handler for the trap that happens if we don't have a 68881.  */
-static void
-trap (sig)
-     int sig;
-{
-  have_fpu = 0;
-}
-
-/* This function is called by functions that want to switch.
-   The calling function must be a `struct switch_caller' in data space.
-   It determines whether a 68881 is present, and modifies its caller
-   to be a static jump to either the 68881 version or the soft version.
-   It then returns into the function it has chosen to do the work.  */
-void
-__68881_switch (dummy)
-     int dummy;
-{
-  void **return_address_location = &((void **) &dummy)[-1];
-  struct switch_caller *const caller
-    = (struct switch_caller *) (((short int *) *return_address_location) - 1);
-
-  if (have_fpu < 0)
-    {
-      /* Figure out whether or not we have a 68881.  */
-      __sighandler_t handler = signal (TRAPSIG, trap);
-      if (handler == SIG_ERR)
-	/* We can't figure it out, so assume we don't have a 68881.
-	   This assumption will never cause us any problems other than
-	   lost performance, while the reverse assumption could cause
-	   the program to crash.  */
-	have_fpu = 0;
-      else
-	{
-	  /* We set `have_fpu' to nonzero, and then execute a 68881
-	     no-op instruction.  If we have a 68881, this will do nothing.
-	     If we don't have one, this will trap and the signal handler
-	     will clear `have_fpu'.  */
-	  have_fpu = 1;
-	  asm ("fnop");
-
-	  /* Restore the old signal handler.  */
-	  (void) signal (TRAPSIG, handler);
-	}
-    }
-
-  /* Modify the caller to be a jump to the appropriate address.  */
-  caller->insn = JMP;
-  caller->target = have_fpu ? caller->fpu : caller->soft;
-
-  /* Make the address we will return to be the target we have chosen.
-     Our return will match the `jsr' done by the caller we have
-     just modified, and it will be just as if that had instead
-     been a `jmp' to the new target.  */
-  *return_address_location = caller->target;
-}