-
-static void
-disassemble (memaddr, info, insn, extension, size)
- bfd_vma memaddr;
- struct disassemble_info *info;
- unsigned long insn;
- unsigned long extension;
- unsigned int size;
-{
- struct mn10200_opcode *op = (struct mn10200_opcode *)mn10200_opcodes;
- const struct mn10200_operand *operand;
- int match = 0;
-
- /* Find the opcode. */
- while (op->name)
- {
- int mysize, extra_shift;
-
- if (op->format == FMT_1)
- mysize = 1;
- else if (op->format == FMT_2
- || op->format == FMT_4)
- mysize = 2;
- else if (op->format == FMT_3
- || op->format == FMT_5)
- mysize = 3;
- else if (op->format == FMT_6)
- mysize = 4;
- else if (op->format == FMT_7)
- mysize = 5;
- else
- abort ();
-
- if (op->format == FMT_2 || op->format == FMT_5)
- extra_shift = 8;
- else if (op->format == FMT_3
- || op->format == FMT_6
- || op->format == FMT_7)
- extra_shift = 16;
- else
- extra_shift = 0;
-
- if ((op->mask & insn) == op->opcode
- && size == (unsigned int) mysize)
- {
- const unsigned char *opindex_ptr;
- unsigned int nocomma;
- int paren = 0;
-
- match = 1;
- (*info->fprintf_func) (info->stream, "%s\t", op->name);
-
- /* Now print the operands. */
- for (opindex_ptr = op->operands, nocomma = 1;
- *opindex_ptr != 0;
- opindex_ptr++)
- {
- unsigned long value;
-
- operand = &mn10200_operands[*opindex_ptr];
-
- if ((operand->flags & MN10200_OPERAND_EXTENDED) != 0)
- {
- value = (insn & 0xffff) << 8;
- value |= extension;
- }
- else
- {
- value = ((insn >> (operand->shift))
- & ((1L << operand->bits) - 1L));
- }
-
- if ((operand->flags & MN10200_OPERAND_SIGNED) != 0)
- value = ((long)(value << (32 - operand->bits))
- >> (32 - operand->bits));
-
- if (!nocomma
- && (!paren
- || ((operand->flags & MN10200_OPERAND_PAREN) == 0)))
- (*info->fprintf_func) (info->stream, ",");
-
- nocomma = 0;
-
- if ((operand->flags & MN10200_OPERAND_DREG) != 0)
- {
- value = ((insn >> (operand->shift + extra_shift))
- & ((1 << operand->bits) - 1));
- (*info->fprintf_func) (info->stream, "d%d", value);
- }
-
- else if ((operand->flags & MN10200_OPERAND_AREG) != 0)
- {
- value = ((insn >> (operand->shift + extra_shift))
- & ((1 << operand->bits) - 1));
- (*info->fprintf_func) (info->stream, "a%d", value);
- }
-
- else if ((operand->flags & MN10200_OPERAND_PSW) != 0)
- (*info->fprintf_func) (info->stream, "psw");
-
- else if ((operand->flags & MN10200_OPERAND_MDR) != 0)
- (*info->fprintf_func) (info->stream, "mdr");
-
- else if ((operand->flags & MN10200_OPERAND_PAREN) != 0)
- {
- if (paren)
- (*info->fprintf_func) (info->stream, ")");
- else
- {
- (*info->fprintf_func) (info->stream, "(");
- nocomma = 1;
- }
- paren = !paren;
- }
-
- else if ((operand->flags & MN10200_OPERAND_PCREL) != 0)
- (*info->print_address_func) ((value + memaddr + mysize) & 0xffffff, info);
-
- else if ((operand->flags & MN10200_OPERAND_MEMADDR) != 0)
- (*info->print_address_func) (value, info);
-
- else
- (*info->fprintf_func) (info->stream, "%ld", value);
- }
- /* All done. */
- break;
- }
- op++;
- }
-
- if (!match)
- {
- (*info->fprintf_func) (info->stream, _("unknown\t0x%04lx"), insn);
- }
-}