Add functions to modify/examine the signed_overflow_ok_p field in cpu_desc.

2 files changed, 31 insertions, 1 deletions

diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index 9726b03de93..a4355894171 100644
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,3 +1,9 @@
+2000-02-24  Nick Clifton  <nickc@cygnus.com>
+
+	* cgen-opc.c (cgen_set_signed_overflow_ok): New function.
+	(cgen_clear_signed_overflow_ok): New function.
+	(cgen_signed_overflow_ok_p): New function.
+
 2000-02-23  Andrew Haley  <aph@cygnus.com>
 
         * m32r-asm.c, m32r-desc.c, m32r-desc.h, m32r-dis.c,
diff --git a/opcodes/cgen-opc.c b/opcodes/cgen-opc.c
index 56840a6a6f9..ede3adde115 100644
--- a/opcodes/cgen-opc.c
+++ b/opcodes/cgen-opc.c
@@ -1,6 +1,6 @@
 /* CGEN generic opcode support.
 
-   Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
 
    This file is part of the GNU Binutils and GDB, the GNU debugger.
 
@@ -595,3 +595,27 @@ cgen_lookup_get_insn_operands (cd, insn, insn_int_value, insn_bytes_value,
   cgen_get_insn_operands (cd, insn, fields, indices);
   return insn;
 }
+
+/* Allow signed overflow of instruction fields.  */
+void
+cgen_set_signed_overflow_ok (cd)
+     CGEN_CPU_DESC cd;
+{
+  cd->signed_overflow_ok_p = 1;
+}
+
+/* Generate an error message if a signed field in an instruction overflows.  */
+void
+cgen_clear_signed_overflow_ok (cd)
+     CGEN_CPU_DESC cd;
+{
+  cd->signed_overflow_ok_p = 0;
+}
+
+/* Will an error message be generated if a signed field in an instruction overflows ? */
+unsigned int
+cgen_signed_overflow_ok_p (cd)
+     CGEN_CPU_DESC cd;
+{
+  return cd->signed_overflow_ok_p;
+}