Move m68k from ports to libc

1 files changed, 61 insertions, 0 deletions

diff --git a/sysdeps/m68k/__longjmp.c b/sysdeps/m68k/__longjmp.c
new file mode 100644
index 0000000000..e1f8c8b9f8
--- /dev/null
+++ b/sysdeps/m68k/__longjmp.c
@@ -0,0 +1,61 @@
+/* Copyright (C) 1991-2014 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 <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. */
+
+#ifdef CHECK_SP
+  CHECK_SP (env[0].__sp);
+#endif
+
+#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]));
+#elif defined (__mcffpu__)
+  asm volatile("fmovem %0, %/fp0-%/fp7" :
+	       /* No outputs.  */ : "m" (env[0].__fpregs[0]));
+#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.  */
+	       );
+
+  /* Avoid `volatile function does return' warnings.  */
+  for (;;);
+}