/* Print National Semiconductor 32000 instructions.
- Copyright (C) 1986-2020 Free Software Foundation, Inc.
+ Copyright (C) 1986-2022 Free Software Foundation, Inc.
This file is part of the GNU opcodes library.
bit position of the addressing extension. BUFFER contains the
instruction. ADDR is where BUFFER was read from. Put the disassembled
version of the operand in RESULT. INDEX_OFFSET is the bit position
- of the index byte (it contains garbage if this operand is not a
+ of the index byte (it contains -1 if this operand is not a
general operand using scaled indexed addressing mode). */
static int
/* Immediate. */
switch (d)
{
- case 'I':
- case 'Z':
- case 'A':
+ default:
/* I and Z are output operands and can`t be immediate
A is an address and we can`t have the address of
an immediate either. We don't know how much to increase
if (*d)
{
/* Offset in bits of the first thing beyond each index byte.
- Element 0 is for operand A and element 1 is for operand B.
- The rest are irrelevant, but we put them here so we don't
- index outside the array. */
- int index_offset[MAX_ARGS];
+ Element 0 is for operand A and element 1 is for operand B. */
+ int index_offset[2];
/* 0 for operand A, 1 for operand B, greater for other args. */
int whicharg = 0;
if we are using scaled indexed addressing mode, since the index
bytes occur right after the basic instruction, not as part
of the addressing extension. */
+ index_offset[0] = -1;
+ index_offset[1] = -1;
if (Is_gen (d[1]))
{
int bitoff = d[1] == 'f' ? 10 : 5;
while (*d)
{
argnum = *d - '1';
+ if (argnum >= MAX_ARGS)
+ abort ();
d++;
- if (argnum > maxarg && argnum < MAX_ARGS)
+ if (argnum > maxarg)
maxarg = argnum;
ioffset = print_insn_arg (*d, ioffset, &aoffset, buffer,
memaddr, arg_bufs[argnum],
- index_offset[whicharg]);
+ whicharg > 1 ? -1 : index_offset[whicharg]);
d++;
- if (whicharg++ >= 1)
- break;
+ whicharg++;
}
for (argnum = 0; argnum <= maxarg; argnum++)