* frv.opc (parse_uhi16): Fix handling of %hi operator on 64-bit

	hosts.

	* cgen-asm.c (cgen_parse_signed_integer): Add code to handle the
	sign extension of negative values on a 64-bit host.
	* frv-asm.c: Regenerate.

	* gas/frv/immediates.s: New test file - checks assembly of
	constant values.
	* gas/frv/immediates.d: Expected disassmbly.
	* gas/frv/allinsn.exp: Run the new test.

3 files changed, 30 insertions, 8 deletions

diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index ffe1002..413f3dc 100644
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,3 +1,9 @@
+2011-12-15  Nick Clifton  <nickc@redhat.com>
+
+	* cgen-asm.c (cgen_parse_signed_integer): Add code to handle the
+	sign extension of negative values on a 64-bit host.
+	* frv-asm.c: Regenerate.
+
 2011-12-13  Alan Modra  <amodra@gmail.com>
 
 	* ppc-opc.c (ISA_V2): Define and use for relevant BO field tests.
diff --git a/opcodes/cgen-asm.c b/opcodes/cgen-asm.c
index f5fde40..901a578 100644
--- a/opcodes/cgen-asm.c
+++ b/opcodes/cgen-asm.c
@@ -1,6 +1,6 @@
 /* CGEN generic assembler support code.
-   Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2007
-   Free Software Foundation, Inc.
+   Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2007,
+   2011  Free Software Foundation, Inc.
 
    This file is part of libopcodes.
 
@@ -268,7 +268,23 @@ cgen_parse_signed_integer (CGEN_CPU_DESC cd,
      &result, &value);
   /* FIXME: Examine `result'.  */
   if (!errmsg)
-    *valuep = value;
+    {
+      /* Handle the case where a hex value is parsed on a 64-bit host.
+	 A value like 0xffffe000 is clearly intended to be a negative
+	 16-bit value, but on a 64-bit host it will be parsed by gas
+	 as 0x00000000ffffe000.
+
+	 The shifts below are designed not to produce compile time
+	 warnings on a 32-bit host.  */
+      if (sizeof (value) > 4
+	  && result == CGEN_PARSE_OPERAND_RESULT_NUMBER
+	  && value > 0
+	  && (value & 0x80000000)
+	  && ((value >> 31) == 1))
+	value |= -1 << 31;
+
+      *valuep = value;
+    }
   return errmsg;
 }
 
diff --git a/opcodes/frv-asm.c b/opcodes/frv-asm.c
index dffa059..3da8261 100644
--- a/opcodes/frv-asm.c
+++ b/opcodes/frv-asm.c
@@ -465,11 +465,11 @@ parse_uhi16 (CGEN_CPU_DESC cd,
 	  if (errmsg == NULL
 	      && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
 	    {
-	      /* If bfd_vma is wider than 32 bits, but we have a sign-
-		 or zero-extension, truncate it.  */
-	      if (value >= - ((bfd_vma)1 << 31)
-		  || value <= ((bfd_vma)1 << 31) - (bfd_vma)1)
-		value &= (((bfd_vma)1 << 16) << 16) - 1;
+ 	      /* If value is wider than 32 bits then be
+ 		 careful about how we extract bits 16-31.  */
+ 	      if (sizeof (value) > 4)
+ 		value &= (((bfd_vma)1 << 16) << 16) - 1;
+
 	      value >>= 16;
 	    }
 	  *valuep = value;