initial import

1 files changed, 56 insertions, 0 deletions

diff --git a/sysdeps/m68k/__longjmp.c b/sysdeps/m68k/__longjmp.c
new file mode 100644
index 0000000000..4fc61084a0
--- /dev/null
+++ b/sysdeps/m68k/__longjmp.c
@@ -0,0 +1,56 @@
+/* Copyright (C) 1991, 1992, 1993, 1994, 1995 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 Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <setjmp.h>
+#include <stdlib.h>
+
+/* Jump to the position specified by ENV, causing the
+   setjmp call there to return VAL, or 1 if VAL is 0.  */
+void
+__longjmp (__jmp_buf env, int val)
+{
+  /* This restores the FP and SP that setjmp's caller had,
+     and puts the return address into A0 and VAL into D0. */
+
+#if	defined(__HAVE_68881__) || defined(__HAVE_FPU__)
+  /* Restore the floating-point registers.  */
+  asm volatile("fmovem%.x %0, fp0-fp7" :
+	       /* No outputs.  */ : "g" (env[0].__fpregs[0]) :
+	       "fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7");
+#endif
+
+  /* Put VAL in D0.  */
+  asm volatile("move%.l %0, d0" : /* No outputs.  */ :
+	       "g" (val == 0 ? 1 : val) : "d0");
+
+  asm volatile(/* Restore the data and address registers.  */
+	       "movem%.l %0, d1-d7/a0-a7\n"
+	       /* Return to setjmp's caller.  */
+#ifdef __motorola__
+	       "jmp (a0)"
+#else
+	       "jmp a0@"
+#endif
+	       : /* No outputs.  */ : "g" (env[0].__dregs[0])
+	       /* We don't bother with the clobbers,
+		  because this code always jumps out anyway.  */
+	       );
+
+  /* This call avoids `volatile function does return' warnings.  */
+  abort ();
+}