initial import

1 files changed, 98 insertions, 0 deletions

diff --git a/sysdeps/mach/hurd/mips/exc2signal.c b/sysdeps/mach/hurd/mips/exc2signal.c
new file mode 100644
index 0000000000..f907c89cf0
--- /dev/null
+++ b/sysdeps/mach/hurd/mips/exc2signal.c
@@ -0,0 +1,98 @@
+/* Translate Mach exception codes into signal numbers.  MIPS version.
+Copyright (C) 1991, 1992, 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 <hurd.h>
+#include <hurd/signal.h>
+#include <mach/exception.h>
+
+/* Translate the Mach exception codes, as received in an `exception_raise' RPC,
+   into a signal number and signal subcode.  */
+
+void
+_hurd_exception2signal (int exception, int code, int subcode,
+			int *signo, long int *sigcode, int *error)
+{
+  *error = 0;
+
+  switch (exception)
+    {
+    default:
+      *signo = SIGIOT;
+      *sigcode = exception;
+      break;
+      
+    case EXC_BAD_ACCESS:
+      if (code == KERN_PROTECTION_FAILURE)
+	*signo = SIGSEGV;
+      else
+	*signo = SIGBUS;
+      *sigcode = subcode;
+      *error = code;
+      break;
+
+    case EXC_BAD_INSTRUCTION:
+      *signo = SIGILL;
+      if (code == EXC_MIPS_II)
+	*sigcode = code;
+      else
+	*sigcode = 0;
+      break;
+      
+    case EXC_ARITHMETIC:
+      switch (code)
+	{
+	case EXC_MIPS_OV:	/* integer overflow */
+	  *signo = SIGFPE;
+	  *sigcode = EXC_MIPS_FLT_OVERFLOW;
+	  break;
+
+	default:
+	  *signo = SIGFPE;
+	  *sigcode = 0;
+	  break;
+
+	case EXC_MIPS_INT:
+	  /* Subcode is the fp_status word saved by the hardware.
+	     Give an error code corresponding to the first bit set.  */
+	  if (subcode == EXC_MIPS_FLT_UNIMP)
+	    *signo = SIGILL;
+	  else
+	    *signo = SIGFPE;
+	  *sigcode = subcode;
+	  break;
+	}
+      break;
+
+    case EXC_EMULATION:		
+      /* 3.0 doesn't give this one, why, I don't know.  */
+      *signo = SIGEMT;
+      *sigcode = 0;
+      break;
+
+    case EXC_SOFTWARE:
+      *signo = SIGEMT;
+      *sigcode = 0;
+      break;
+      
+    case EXC_BREAKPOINT:
+      *signo = SIGTRAP;
+      *sigcode = code;
+      break;
+    }
+}