/* Print National Semiconductor 32000 instructions.
- Copyright (C) 1986-2015 Free Software Foundation, Inc.
+ Copyright (C) 1986-2019 Free Software Foundation, Inc.
This file is part of the GNU opcodes library.
#include "sysdep.h"
#include "bfd.h"
-#include "dis-asm.h"
+#include "disassemble.h"
#if !defined(const) && !defined(__STDC__)
#define const
#endif
static int
bit_extract (bfd_byte *buffer, int offset, int count)
{
- int result;
- int bit;
+ unsigned int result;
+ unsigned int bit;
+ if (offset < 0 || count < 0)
+ return 0;
buffer += offset >> 3;
offset &= 7;
bit = 1;
static int
bit_extract_simple (bfd_byte *buffer, int offset, int count)
{
- int result;
- int bit;
+ unsigned int result;
+ unsigned int bit;
+ if (offset < 0 || count < 0)
+ return 0;
buffer += offset >> 3;
offset &= 7;
bit = 1;
static void
bit_copy (bfd_byte *buffer, int offset, int count, char *to)
{
+ if (offset < 0 || count < 0)
+ return;
for (; count > 8; count -= 8, to++, offset += 8)
*to = bit_extract (buffer, offset, 8);
*to = bit_extract (buffer, offset, count);
}
static int
-sign_extend (int value, int bits)
+sign_extend (unsigned int value, unsigned int bits)
{
- value = value & ((1 << bits) - 1);
- return (value & (1 << (bits - 1))
- ? value | (~((1 << bits) - 1))
- : value);
+ unsigned int sign = 1u << (bits - 1);
+ return ((value & (sign + sign - 1)) ^ sign) - sign;
}
static void
case 'f':
/* A "gen" operand but 5 bits from the end of instruction. */
ioffset -= 5;
+ /* Fall through. */
case 'Z':
case 'F':
case 'L':
memaddr, arg_bufs[argnum],
index_offset[whicharg]);
d++;
- whicharg++;
+ if (whicharg++ >= 1)
+ break;
}
+
for (argnum = 0; argnum <= maxarg; argnum++)
{
bfd_vma addr;