PowerPC disassembly of odd sized sections

[deliverable/binutils-gdb.git] / opcodes / ia64-opc.c

diff --git a/opcodes/ia64-opc.c b/opcodes/ia64-opc.c
index 5aa1198ec533f877f12fb9253ed8b99f4ebe3dda..cebf52356ee643c921d2247f38de975defed1445 100644 (file)
--- a/opcodes/ia64-opc.c
+++ b/opcodes/ia64-opc.c
@@ -1,5 +1,5 @@
 /* ia64-opc.c -- Functions to access the compacted opcode table
-   Copyright (C) 1999-2019 Free Software Foundation, Inc.
+   Copyright (C) 1999-2020 Free Software Foundation, Inc.
    Written by Bob Manson of Cygnus Solutions, <manson@cygnus.com>
 
    This file is part of the GNU opcodes library.
@@ -372,13 +372,16 @@ locate_opcode_ent (ia64_insn opcode, enum ia64_insn_type type)
 
       bitpos[currstatenum] = currbitnum;
 
-      /* Skip opval[0] bits in the instruction. */
+      /* Skip opval[0] bits in the instruction.  */
       if (op & 0x40)
        {
          currbitnum -= opval[0];
        }
 
-      /* The value of the current bit being tested. */
+      if (currbitnum < 0)
+       currbitnum = 0;
+
+      /* The value of the current bit being tested.  */
       currbit = opcode & (((ia64_insn) 1) << currbitnum) ? 1 : 0;
       next_op = -1;
 
@@ -463,7 +466,7 @@ locate_opcode_ent (ia64_insn opcode, enum ia64_insn_type type)
 
          if (next_op > 65535)
            {
-             abort ();
+             return -1;
            }
 
          /* Run through the list of opcodes to check, trying to find