X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=opcodes%2Farc-dis.c;h=a47e81f0a28be49522bb9e2e38bb43ec0b7c0b93;hb=747cfc8c6bb23d40b3fa987f6c3df9d3a0d7b817;hp=8207c05519320d315ac20fec1aa5202985a0878b;hpb=0f3f71676a8971e0376d7d99b383660f06ff4d95;p=deliverable%2Fbinutils-gdb.git

diff --git a/opcodes/arc-dis.c b/opcodes/arc-dis.c
index 8207c05519..a47e81f0a2 100644
--- a/opcodes/arc-dis.c
+++ b/opcodes/arc-dis.c
@@ -137,8 +137,7 @@ static bfd_boolean print_hex = FALSE;
   (info->endian == BFD_ENDIAN_LITTLE ? bfd_getm32 (bfd_getl32 (buf))	\
    : bfd_getb32 (buf))
 
-#define BITS(word,s,e)  (((word) << (sizeof (word) * 8 - 1 - e)) >>	\
-			 (s + (sizeof (word) * 8 - 1 - e)))
+#define BITS(word,s,e)  (((word) >> (s)) & ((1ull << ((e) - (s)) << 1) - 1))
 #define OPCODE_32BIT_INSN(word)	(BITS ((word), 27, 31))
 
 /* Functions implementation.  */
@@ -295,7 +294,7 @@ find_format_from_table (struct disassemble_info *info,
 	  if (operand->extract)
 	    value = (*operand->extract) (insn, &invalid);
 	  else
-	    value = (insn >> operand->shift) & ((1 << operand->bits) - 1);
+	    value = (insn >> operand->shift) & ((1ull << operand->bits) - 1);
 
 	  /* Check for LIMM indicator.  If it is there, then make sure
 	     we pick the right format.  */
@@ -672,7 +671,7 @@ arc_insn_length (bfd_byte msb, bfd_byte lsb, struct disassemble_info *info)
       break;
 
     default:
-      abort ();
+      return 0;
     }
 }
 
@@ -1009,7 +1008,6 @@ print_insn_arc (bfd_vma memaddr,
      the number of bytes objdump should display on a single line.  If
      the instruction decoder sets this, it should always set it to
      the same value in order to get reasonable looking output.  */
-
   info->bytes_per_line  = 8;
 
   /* In the next lines, we set two info variables control the way
@@ -1017,7 +1015,6 @@ print_insn_arc (bfd_vma memaddr,
      8 and bytes_per_chunk is 4, the output will look like this:
      00:   00000000 00000000
      with the chunks displayed according to "display_endian".  */
-
   if (info->section
       && !(info->section->flags & SEC_CODE))
     {
@@ -1072,13 +1069,16 @@ print_insn_arc (bfd_vma memaddr,
 	  (*info->fprintf_func) (info->stream, ".word\t0x%08lx", data);
 	  break;
 	default:
-	  abort ();
+	  return -1;
 	}
       return size;
     }
 
   insn_len = arc_insn_length (buffer[highbyte], buffer[lowbyte], info);
   pr_debug ("instruction length = %d bytes\n", insn_len);
+  if (insn_len == 0)
+    return -1;
+
   arc_infop = info->private_data;
   arc_infop->insn_len = insn_len;
 
@@ -1131,7 +1131,7 @@ print_insn_arc (bfd_vma memaddr,
 
     default:
       /* There is no instruction whose length is not 2, 4, 6, or 8.  */
-      abort ();
+      return -1;
     }
 
   pr_debug ("instruction value = %llx\n", insn);
@@ -1159,24 +1159,28 @@ print_insn_arc (bfd_vma memaddr,
 	  (*info->fprintf_func) (info->stream, ".shor\t%#04llx",
 				 insn & 0xffff);
 	  break;
+
 	case 4:
 	  (*info->fprintf_func) (info->stream, ".word\t%#08llx",
 				 insn & 0xffffffff);
 	  break;
+
 	case 6:
 	  (*info->fprintf_func) (info->stream, ".long\t%#08llx",
 				 insn & 0xffffffff);
 	  (*info->fprintf_func) (info->stream, ".long\t%#04llx",
 				 (insn >> 32) & 0xffff);
 	  break;
+
 	case 8:
 	  (*info->fprintf_func) (info->stream, ".long\t%#08llx",
 				 insn & 0xffffffff);
 	  (*info->fprintf_func) (info->stream, ".long\t%#08llx",
 				 insn >> 32);
 	  break;
+
 	default:
-	  abort ();
+	  return -1;
 	}
 
       info->insn_type = dis_noninsn;