osprey/cygnus/opcodes/hppa-dis.c

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/* Disassembler for the PA-RISC. Somewhat derived from sparc-pinsn.c.
   Copyright 1989, 1990, 1992, 1993, 1994, 1995, 1998, 1999, 2000, 2001, 2003
   Free Software Foundation, Inc.

   Contributed by the Center for Software Science at the
   University of Utah (pa-gdb-bugs@cs.utah.edu).

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#include "sysdep.h"
#include "dis-asm.h"
#include "libhppa.h"
#include "opcode/hppa.h"

/* Integer register names, indexed by the numbers which appear in the
   opcodes.  */
static const char *const reg_names[] =
 {"flags", "r1", "rp", "r3", "r4", "r5", "r6", "r7", "r8", "r9",
  "r10", "r11", "r12", "r13", "r14", "r15", "r16", "r17", "r18", "r19",
  "r20", "r21", "r22", "r23", "r24", "r25", "r26", "dp", "ret0", "ret1",
  "sp", "r31"};

/* Floating point register names, indexed by the numbers which appear in the
   opcodes.  */
static const char *const fp_reg_names[] =
 {"fpsr", "fpe2", "fpe4", "fpe6",
  "fr4", "fr5", "fr6", "fr7", "fr8",
  "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
  "fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23",
  "fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31"};

typedef unsigned int CORE_ADDR;

/* Get at various relevent fields of an instruction word.  */

#define MASK_5 0x1f
#define MASK_10 0x3ff
#define MASK_11 0x7ff
#define MASK_14 0x3fff
#define MASK_16 0xffff
#define MASK_21 0x1fffff

/* These macros get bit fields using HP's numbering (MSB = 0) */

#define GET_FIELD(X, FROM, TO) \
  ((X) >> (31 - (TO)) & ((1 << ((TO) - (FROM) + 1)) - 1))

#define GET_BIT(X, WHICH) \
  GET_FIELD (X, WHICH, WHICH)

/* Some of these have been converted to 2-d arrays because they
   consume less storage this way.  If the maintenance becomes a
   problem, convert them back to const 1-d pointer arrays.  */
static const char *const control_reg[] = {
  "rctr", "cr1", "cr2", "cr3", "cr4", "cr5", "cr6", "cr7",
  "pidr1", "pidr2", "ccr", "sar", "pidr3", "pidr4",
  "iva", "eiem", "itmr", "pcsq", "pcoq", "iir", "isr",
  "ior", "ipsw", "eirr", "tr0", "tr1", "tr2", "tr3",
  "tr4", "tr5", "tr6", "tr7"
};

static const char *const compare_cond_names[] = {
  "", ",=", ",<", ",<=", ",<<", ",<<=", ",sv", ",od",
  ",tr", ",<>", ",>=", ",>", ",>>=", ",>>", ",nsv", ",ev"
};
static const char *const compare_cond_64_names[] = {
  "", ",*=", ",*<", ",*<=", ",*<<", ",*<<=", ",*sv", ",*od",
  ",*tr", ",*<>", ",*>=", ",*>", ",*>>=", ",*>>", ",*nsv", ",*ev"
};
static const char *const cmpib_cond_64_names[] = {
  ",*<<", ",*=", ",*<", ",*<=", ",*>>=", ",*<>", ",*>=", ",*>"
};
static const char *const add_cond_names[] = {
  "", ",=", ",<", ",<=", ",nuv", ",znv", ",sv", ",od",
  ",tr", ",<>", ",>=", ",>", ",uv", ",vnz", ",nsv", ",ev"
};
static const char *const add_cond_64_names[] = {
  "", ",*=", ",*<", ",*<=", ",*nuv", ",*znv", ",*sv", ",*od",
  ",*tr", ",*<>", ",*>=", ",*>", ",*uv", ",*vnz", ",*nsv", ",*ev"
};
static const char *const wide_add_cond_names[] = {
  "", ",=", ",<", ",<=", ",nuv", ",*=", ",*<", ",*<=",
  ",tr", ",<>", ",>=", ",>", ",uv", ",*<>", ",*>=", ",*>"
};
static const char *const logical_cond_names[] = {
  "", ",=", ",<", ",<=", 0, 0, 0, ",od",
  ",tr", ",<>", ",>=", ",>", 0, 0, 0, ",ev"};
static const char *const logical_cond_64_names[] = {
  "", ",*=", ",*<", ",*<=", 0, 0, 0, ",*od",
  ",*tr", ",*<>", ",*>=", ",*>", 0, 0, 0, ",*ev"};
static const char *const unit_cond_names[] = {
  "", ",swz", ",sbz", ",shz", ",sdc", ",swc", ",sbc", ",shc",
  ",tr", ",nwz", ",nbz", ",nhz", ",ndc", ",nwc", ",nbc", ",nhc"
};
static const char *const unit_cond_64_names[] = {
  "", ",*swz", ",*sbz", ",*shz", ",*sdc", ",*swc", ",*sbc", ",*shc",
  ",*tr", ",*nwz", ",*nbz", ",*nhz", ",*ndc", ",*nwc", ",*nbc", ",*nhc"
};
static const char *const shift_cond_names[] = {
  "", ",=", ",<", ",od", ",tr", ",<>", ",>=", ",ev"
};
static const char *const shift_cond_64_names[] = {
  "", ",*=", ",*<", ",*od", ",*tr", ",*<>", ",*>=", ",*ev"
};
static const char *const bb_cond_64_names[] = {
  ",*<", ",*>="
};
static const char *const index_compl_names[] = {"", ",m", ",s", ",sm"};
static const char *const short_ldst_compl_names[] = {"", ",ma", "", ",mb"};
static const char *const short_bytes_compl_names[] = {
  "", ",b,m", ",e", ",e,m"
};
static const char *const float_format_names[] = {",sgl", ",dbl", "", ",quad"};
static const char *const fcnv_fixed_names[] = {",w", ",dw", "", ",qw"};
static const char *const fcnv_ufixed_names[] = {",uw", ",udw", "", ",uqw"};
static const char *const float_comp_names[] =
{
  ",false?", ",false", ",?", ",!<=>", ",=", ",=t", ",?=", ",!<>",
  ",!?>=", ",<", ",?<", ",!>=", ",!?>", ",<=", ",?<=", ",!>",
  ",!?<=", ",>", ",?>", ",!<=", ",!?<", ",>=", ",?>=", ",!<",
  ",!?=", ",<>", ",!=", ",!=t", ",!?", ",<=>", ",true?", ",true"
};
static const char *const signed_unsigned_names[] = {",u", ",s"};
static const char *const mix_half_names[] = {",l", ",r"};
static const char *const saturation_names[] = {",us", ",ss", 0, ""};
static const char *const read_write_names[] = {",r", ",w"};
static const char *const add_compl_names[] = { 0, "", ",l", ",tsv" };

/* For a bunch of different instructions form an index into a
   completer name table.  */
#define GET_COMPL(insn) (GET_FIELD (insn, 26, 26) | \
       GET_FIELD (insn, 18, 18) << 1)

#define GET_COND(insn) (GET_FIELD ((insn), 16, 18) + \
      (GET_FIELD ((insn), 19, 19) ? 8 : 0))

static void fput_reg PARAMS ((unsigned int, disassemble_info *));
static void fput_fp_reg PARAMS ((unsigned int, disassemble_info *));
static void fput_fp_reg_r PARAMS ((unsigned int, disassemble_info *));
static void fput_creg PARAMS ((unsigned int, disassemble_info *));
static void fput_const PARAMS ((unsigned int, disassemble_info *));
static int extract_3 PARAMS ((unsigned int));
static int extract_5_load PARAMS ((unsigned int));
static int extract_5_store PARAMS ((unsigned int));
static unsigned extract_5r_store PARAMS ((unsigned int));
static unsigned extract_5R_store PARAMS ((unsigned int));
static unsigned extract_10U_store PARAMS ((unsigned int));
static unsigned extract_5Q_store PARAMS ((unsigned int));
static int extract_11 PARAMS ((unsigned int));
static int extract_14 PARAMS ((unsigned int));
static int extract_16 PARAMS ((unsigned int));
static int extract_21 PARAMS ((unsigned int));
static int extract_12 PARAMS ((unsigned int));
static int extract_17 PARAMS ((unsigned int));
static int extract_22 PARAMS ((unsigned int));

/* Utility function to print registers.  Put these first, so gcc's function
   inlining can do its stuff.  */

#define fputs_filtered(STR,F) (*info->fprintf_func) (info->stream, "%s", STR)

static void
fput_reg (reg, info)
     unsigned reg;
     disassemble_info *info;
{
  (*info->fprintf_func) (info->stream, reg ? reg_names[reg] : "r0");
}

static void
fput_fp_reg (reg, info)
     unsigned reg;
     disassemble_info *info;
{
  (*info->fprintf_func) (info->stream, reg ? fp_reg_names[reg] : "fr0");
}

static void
fput_fp_reg_r (reg, info)
     unsigned reg;
     disassemble_info *info;
{
  /* Special case floating point exception registers.  */
  if (reg < 4)
    (*info->fprintf_func) (info->stream, "fpe%d", reg * 2 + 1);
  else
    (*info->fprintf_func) (info->stream, "%sR",
         reg ? fp_reg_names[reg] : "fr0");
}

static void
fput_creg (reg, info)
     unsigned reg;
     disassemble_info *info;
{
  (*info->fprintf_func) (info->stream, control_reg[reg]);
}

/* Print constants with sign.  */

static void
fput_const (num, info)
     unsigned num;
     disassemble_info *info;
{
  if ((int)num < 0)
    (*info->fprintf_func) (info->stream, "-%x", -(int)num);
  else
    (*info->fprintf_func) (info->stream, "%x", num);
}

/* Routines to extract various sized constants out of hppa
   instructions.  */

/* Extract a 3-bit space register number from a be, ble, mtsp or mfsp.  */
static int
extract_3 (word)
     unsigned word;
{
  return GET_FIELD (word, 18, 18) << 2 | GET_FIELD (word, 16, 17);
}

static int
extract_5_load (word)
     unsigned word;
{
  return low_sign_extend (word >> 16 & MASK_5, 5);
}

/* Extract the immediate field from a st{bhw}s instruction.  */
static int
extract_5_store (word)
     unsigned word;
{
  return low_sign_extend (word & MASK_5, 5);
}

/* Extract the immediate field from a break instruction.  */
static unsigned
extract_5r_store (word)
     unsigned word;
{
  return (word & MASK_5);
}

/* Extract the immediate field from a {sr}sm instruction.  */
static unsigned
extract_5R_store (word)
     unsigned word;
{
  return (word >> 16 & MASK_5);
}

/* Extract the 10 bit immediate field from a {sr}sm instruction.  */
static unsigned
extract_10U_store (word)
     unsigned word;
{
  return (word >> 16 & MASK_10);
}

/* Extract the immediate field from a bb instruction.  */
static unsigned
extract_5Q_store (word)
     unsigned word;
{
  return (word >> 21 & MASK_5);
}

/* Extract an 11 bit immediate field.  */
static int
extract_11 (word)
     unsigned word;
{
  return low_sign_extend (word & MASK_11, 11);
}

/* Extract a 14 bit immediate field.  */
static int
extract_14 (word)
     unsigned word;
{
  return low_sign_extend (word & MASK_14, 14);
}

/* Extract a 16 bit immediate field (PA2.0 wide only).  */
static int
extract_16 (word)
     unsigned word;
{
  int m15, m0, m1;
  m0 = GET_BIT (word, 16);
  m1 = GET_BIT (word, 17);
  m15 = GET_BIT (word, 31);
  word = (word >> 1) & 0x1fff;
  word = word | (m15 << 15) | ((m15 ^ m0) << 14) | ((m15 ^ m1) << 13);
  return sign_extend (word, 16);
}

/* Extract a 21 bit constant.  */

static int
extract_21 (word)
     unsigned word;
{
  int val;

  word &= MASK_21;
  word <<= 11;
  val = GET_FIELD (word, 20, 20);
  val <<= 11;
  val |= GET_FIELD (word, 9, 19);
  val <<= 2;
  val |= GET_FIELD (word, 5, 6);
  val <<= 5;
  val |= GET_FIELD (word, 0, 4);
  val <<= 2;
  val |= GET_FIELD (word, 7, 8);
  return sign_extend (val, 21) << 11;
}

/* Extract a 12 bit constant from branch instructions.  */

static int
extract_12 (word)
     unsigned word;
{
  return sign_extend (GET_FIELD (word, 19, 28) |
          GET_FIELD (word, 29, 29) << 10 |
          (word & 0x1) << 11, 12) << 2;
}

/* Extract a 17 bit constant from branch instructions, returning the
   19 bit signed value.  */

static int
extract_17 (word)
     unsigned word;
{
  return sign_extend (GET_FIELD (word, 19, 28) |
          GET_FIELD (word, 29, 29) << 10 |
          GET_FIELD (word, 11, 15) << 11 |
          (word & 0x1) << 16, 17) << 2;
}

static int
extract_22 (word)
     unsigned word;
{
  return sign_extend (GET_FIELD (word, 19, 28) |
          GET_FIELD (word, 29, 29) << 10 |
          GET_FIELD (word, 11, 15) << 11 |
          GET_FIELD (word, 6, 10) << 16 |
          (word & 0x1) << 21, 22) << 2;
}

/* Print one instruction.  */
int
print_insn_hppa (memaddr, info)
     bfd_vma memaddr;
     disassemble_info *info;
{
  bfd_byte buffer[4];
  unsigned int insn, i;

  {
    int status =
      (*info->read_memory_func) (memaddr, buffer, sizeof (buffer), info);
    if (status != 0)
      {
  (*info->memory_error_func) (status, memaddr, info);
  return -1;
      }
  }

  insn = bfd_getb32 (buffer);

  for (i = 0; i < NUMOPCODES; ++i)
    {
      const struct pa_opcode *opcode = &pa_opcodes[i];
      if ((insn & opcode->mask) == opcode->match)
  {
    register const char *s;
#ifndef BFD64
    if (opcode->arch == pa20w)
      continue;
#endif
    (*info->fprintf_func) (info->stream, "%s", opcode->name);

    if (!strchr ("cfCY?-+nHNZFIuv{", opcode->args[0]))
      (*info->fprintf_func) (info->stream, " ");
    for (s = opcode->args; *s != '\0'; ++s)
      {
        switch (*s)
    {
    case 'x':
      fput_reg (GET_FIELD (insn, 11, 15), info);
      break;
    case 'a':
    case 'b':
      fput_reg (GET_FIELD (insn, 6, 10), info);
      break;
    case '^':
      fput_creg (GET_FIELD (insn, 6, 10), info);
      break;
    case 't':
      fput_reg (GET_FIELD (insn, 27, 31), info);
      break;

      /* Handle floating point registers.  */
    case 'f':
      switch (*++s)
        {
        case 't':
          fput_fp_reg (GET_FIELD (insn, 27, 31), info);
          break;
        case 'T':
          if (GET_FIELD (insn, 25, 25))
      fput_fp_reg_r (GET_FIELD (insn, 27, 31), info);
          else
      fput_fp_reg (GET_FIELD (insn, 27, 31), info);
          break;
        case 'a':
          if (GET_FIELD (insn, 25, 25))
      fput_fp_reg_r (GET_FIELD (insn, 6, 10), info);
          else
      fput_fp_reg (GET_FIELD (insn, 6, 10), info);
          break;

          /* 'fA' will not generate a space before the regsiter
       name.  Normally that is fine.  Except that it
       causes problems with xmpyu which has no FP format
       completer.  */
        case 'X':
          fputs_filtered (" ", info);
          /* FALLTHRU */

        case 'A':
          if (GET_FIELD (insn, 24, 24))
      fput_fp_reg_r (GET_FIELD (insn, 6, 10), info);
          else
      fput_fp_reg (GET_FIELD (insn, 6, 10), info);
          break;
        case 'b':
          if (GET_FIELD (insn, 25, 25))
      fput_fp_reg_r (GET_FIELD (insn, 11, 15), info);
          else
      fput_fp_reg (GET_FIELD (insn, 11, 15), info);
          break;
        case 'B':
          if (GET_FIELD (insn, 19, 19))
      fput_fp_reg_r (GET_FIELD (insn, 11, 15), info);
          else
      fput_fp_reg (GET_FIELD (insn, 11, 15), info);
          break;
        case 'C':
          {
      int reg = GET_FIELD (insn, 21, 22);
      reg |= GET_FIELD (insn, 16, 18) << 2;
      if (GET_FIELD (insn, 23, 23) != 0)
        fput_fp_reg_r (reg, info);
      else
        fput_fp_reg (reg, info);
      break;
          }
        case 'i':
          {
      int reg = GET_FIELD (insn, 6, 10);

      reg |= (GET_FIELD (insn, 26, 26) << 4);
      fput_fp_reg (reg, info);
      break;
          }
        case 'j':
          {
      int reg = GET_FIELD (insn, 11, 15);

      reg |= (GET_FIELD (insn, 26, 26) << 4);
      fput_fp_reg (reg, info);
      break;
          }
        case 'k':
          {
      int reg = GET_FIELD (insn, 27, 31);

      reg |= (GET_FIELD (insn, 26, 26) << 4);
      fput_fp_reg (reg, info);
      break;
          }
        case 'l':
          {
      int reg = GET_FIELD (insn, 21, 25);

      reg |= (GET_FIELD (insn, 26, 26) << 4);
      fput_fp_reg (reg, info);
      break;
          }
        case 'm':
          {
      int reg = GET_FIELD (insn, 16, 20);

      reg |= (GET_FIELD (insn, 26, 26) << 4);
      fput_fp_reg (reg, info);
      break;
          }

          /* 'fe' will not generate a space before the register
       name.  Normally that is fine.  Except that it
       causes problems with fstw fe,y(b) which has no FP
       format completer.  */
        case 'E':
          fputs_filtered (" ", info);
          /* FALLTHRU */

        case 'e':
          if (GET_FIELD (insn, 30, 30))
      fput_fp_reg_r (GET_FIELD (insn, 11, 15), info);
          else
      fput_fp_reg (GET_FIELD (insn, 11, 15), info);
          break;
        case 'x':
          fput_fp_reg (GET_FIELD (insn, 11, 15), info);
          break;
        }
      break;

    case '5':
      fput_const (extract_5_load (insn), info);
      break;
    case 's':
      {
        int space = GET_FIELD (insn, 16, 17);
        /* Zero means implicit addressing, not use of sr0.  */
        if (space != 0)
          (*info->fprintf_func) (info->stream, "sr%d", space);
      }
      break;

    case 'S':
      (*info->fprintf_func) (info->stream, "sr%d",
           extract_3 (insn));
      break;

      /* Handle completers.  */
    case 'c':
      switch (*++s)
        {
        case 'x':
          (*info->fprintf_func)
      (info->stream, "%s",
       index_compl_names[GET_COMPL (insn)]);
          break;
        case 'X':
          (*info->fprintf_func)
      (info->stream, "%s ",
       index_compl_names[GET_COMPL (insn)]);
          break;
        case 'm':
          (*info->fprintf_func)
      (info->stream, "%s",
       short_ldst_compl_names[GET_COMPL (insn)]);
          break;
        case 'M':
          (*info->fprintf_func)
      (info->stream, "%s ",
       short_ldst_compl_names[GET_COMPL (insn)]);
          break;
        case 'A':
          (*info->fprintf_func)
      (info->stream, "%s ",
       short_bytes_compl_names[GET_COMPL (insn)]);
          break;
        case 's':
          (*info->fprintf_func)
      (info->stream, "%s",
       short_bytes_compl_names[GET_COMPL (insn)]);
          break;
        case 'c':
        case 'C':
          switch (GET_FIELD (insn, 20, 21))
      {
      case 1:
        (*info->fprintf_func) (info->stream, ",bc ");
        break;
      case 2:
        (*info->fprintf_func) (info->stream, ",sl ");
        break;
      default:
        (*info->fprintf_func) (info->stream, " ");
      }
          break;
        case 'd':
          switch (GET_FIELD (insn, 20, 21))
      {
      case 1:
        (*info->fprintf_func) (info->stream, ",co ");
        break;
      default:
        (*info->fprintf_func) (info->stream, " ");
      }
          break;
        case 'o':
          (*info->fprintf_func) (info->stream, ",o");
          break;
        case 'g':
          (*info->fprintf_func) (info->stream, ",gate");
          break;
        case 'p':
          (*info->fprintf_func) (info->stream, ",l,push");
          break;
        case 'P':
          (*info->fprintf_func) (info->stream, ",pop");
          break;
        case 'l':
        case 'L':
          (*info->fprintf_func) (info->stream, ",l");
          break;
        case 'w':
          (*info->fprintf_func)
      (info->stream, "%s ",
       read_write_names[GET_FIELD (insn, 25, 25)]);
          break;
        case 'W':
          (*info->fprintf_func) (info->stream, ",w");
          break;
        case 'r':
          if (GET_FIELD (insn, 23, 26) == 5)
      (*info->fprintf_func) (info->stream, ",r");
          break;
        case 'Z':
          if (GET_FIELD (insn, 26, 26))
      (*info->fprintf_func) (info->stream, ",m ");
          else
      (*info->fprintf_func) (info->stream, " ");
          break;
        case 'i':
          if (GET_FIELD (insn, 25, 25))
      (*info->fprintf_func) (info->stream, ",i");
          break;
        case 'z':
          if (!GET_FIELD (insn, 21, 21))
      (*info->fprintf_func) (info->stream, ",z");
          break;
        case 'a':
          (*info->fprintf_func)
      (info->stream, "%s",
       add_compl_names[GET_FIELD (insn, 20, 21)]);
          break;
        case 'Y':
          (*info->fprintf_func)
      (info->stream, ",dc%s",
       add_compl_names[GET_FIELD (insn, 20, 21)]);
          break;
        case 'y':
          (*info->fprintf_func)
      (info->stream, ",c%s",
       add_compl_names[GET_FIELD (insn, 20, 21)]);
          break;
        case 'v':
          if (GET_FIELD (insn, 20, 20))
      (*info->fprintf_func) (info->stream, ",tsv");
          break;
        case 't':
          (*info->fprintf_func) (info->stream, ",tc");
          if (GET_FIELD (insn, 20, 20))
      (*info->fprintf_func) (info->stream, ",tsv");
          break;
        case 'B':
          (*info->fprintf_func) (info->stream, ",db");
          if (GET_FIELD (insn, 20, 20))
      (*info->fprintf_func) (info->stream, ",tsv");
          break;
        case 'b':
          (*info->fprintf_func) (info->stream, ",b");
          if (GET_FIELD (insn, 20, 20))
      (*info->fprintf_func) (info->stream, ",tsv");
          break;
        case 'T':
          if (GET_FIELD (insn, 25, 25))
      (*info->fprintf_func) (info->stream, ",tc");
          break;
        case 'S':
          /* EXTRD/W has a following condition.  */
          if (*(s + 1) == '?')
      (*info->fprintf_func)
        (info->stream, "%s",
         signed_unsigned_names[GET_FIELD (insn, 21, 21)]);
          else
      (*info->fprintf_func)
        (info->stream, "%s ",
         signed_unsigned_names[GET_FIELD (insn, 21, 21)]);
          break;
        case 'h':
          (*info->fprintf_func)
      (info->stream, "%s",
       mix_half_names[GET_FIELD (insn, 17, 17)]);
          break;
        case 'H':
          (*info->fprintf_func)
      (info->stream, "%s ",
       saturation_names[GET_FIELD (insn, 24, 25)]);
          break;
        case '*':
          (*info->fprintf_func)
      (info->stream, ",%d%d%d%d ",
       GET_FIELD (insn, 17, 18), GET_FIELD (insn, 20, 21),
       GET_FIELD (insn, 22, 23), GET_FIELD (insn, 24, 25));
          break;

        case 'q':
          {
      int m, a;

      m = GET_FIELD (insn, 28, 28);
      a = GET_FIELD (insn, 29, 29);

      if (m && !a)
        fputs_filtered (",ma ", info);
      else if (m && a)
        fputs_filtered (",mb ", info);
      else
        fputs_filtered (" ", info);
      break;
          }

        case 'J':
          {
      int opc = GET_FIELD (insn, 0, 5);

      if (opc == 0x16 || opc == 0x1e)
        {
          if (GET_FIELD (insn, 29, 29) == 0)
            fputs_filtered (",ma ", info);
          else
            fputs_filtered (",mb ", info);
        }
      else
        fputs_filtered (" ", info);
      break;
          }

        case 'e':
          {
      int opc = GET_FIELD (insn, 0, 5);

      if (opc == 0x13 || opc == 0x1b)
        {
          if (GET_FIELD (insn, 18, 18) == 1)
            fputs_filtered (",mb ", info);
          else
            fputs_filtered (",ma ", info);
        }
      else if (opc == 0x17 || opc == 0x1f)
        {
          if (GET_FIELD (insn, 31, 31) == 1)
            fputs_filtered (",ma ", info);
          else
            fputs_filtered (",mb ", info);
        }
      else
        fputs_filtered (" ", info);

      break;
          }
        }
      break;

      /* Handle conditions.  */
    case '?':
      {
        s++;
        switch (*s)
          {
          case 'f':
      (*info->fprintf_func)
        (info->stream, "%s ",
         float_comp_names[GET_FIELD (insn, 27, 31)]);
      break;

      /* these four conditions are for the set of instructions
         which distinguish true/false conditions by opcode
         rather than by the 'f' bit (sigh): comb, comib,
         addb, addib */
          case 't':
      fputs_filtered
        (compare_cond_names[GET_FIELD (insn, 16, 18)], info);
      break;
          case 'n':
      fputs_filtered
        (compare_cond_names[GET_FIELD (insn, 16, 18)
                + GET_FIELD (insn, 4, 4) * 8],
         info);
      break;
          case 'N':
      fputs_filtered
        (compare_cond_64_names[GET_FIELD (insn, 16, 18)
             + GET_FIELD (insn, 2, 2) * 8],
         info);
      break;
          case 'Q':
      fputs_filtered
        (cmpib_cond_64_names[GET_FIELD (insn, 16, 18)],
         info);
      break;
          case '@':
      fputs_filtered
        (add_cond_names[GET_FIELD (insn, 16, 18)
            + GET_FIELD (insn, 4, 4) * 8],
         info);
      break;
          case 's':
      (*info->fprintf_func)
        (info->stream, "%s ",
         compare_cond_names[GET_COND (insn)]);
      break;
          case 'S':
      (*info->fprintf_func)
        (info->stream, "%s ",
         compare_cond_64_names[GET_COND (insn)]);
      break;
          case 'a':
      (*info->fprintf_func)
        (info->stream, "%s ",
         add_cond_names[GET_COND (insn)]);
      break;
          case 'A':
      (*info->fprintf_func)
        (info->stream, "%s ",
         add_cond_64_names[GET_COND (insn)]);
      break;
          case 'd':
      (*info->fprintf_func)
        (info->stream, "%s",
         add_cond_names[GET_FIELD (insn, 16, 18)]);
      break;

          case 'W':
      (*info->fprintf_func)
        (info->stream, "%s",
         wide_add_cond_names[GET_FIELD (insn, 16, 18) +
                 GET_FIELD (insn, 4, 4) * 8]);
      break;

          case 'l':
      (*info->fprintf_func)
        (info->stream, "%s ",
         logical_cond_names[GET_COND (insn)]);
      break;
          case 'L':
      (*info->fprintf_func)
        (info->stream, "%s ",
         logical_cond_64_names[GET_COND (insn)]);
      break;
          case 'u':
      (*info->fprintf_func)
        (info->stream, "%s ",
         unit_cond_names[GET_COND (insn)]);
      break;
          case 'U':
      (*info->fprintf_func)
        (info->stream, "%s ",
         unit_cond_64_names[GET_COND (insn)]);
      break;
          case 'y':
          case 'x':
          case 'b':
      (*info->fprintf_func)
        (info->stream, "%s",
         shift_cond_names[GET_FIELD (insn, 16, 18)]);

      /* If the next character in args is 'n', it will handle
         putting out the space.  */
      if (s[1] != 'n')
        (*info->fprintf_func) (info->stream, " ");
      break;
          case 'X':
      (*info->fprintf_func)
        (info->stream, "%s ",
         shift_cond_64_names[GET_FIELD (insn, 16, 18)]);
      break;
          case 'B':
      (*info->fprintf_func)
        (info->stream, "%s",
         bb_cond_64_names[GET_FIELD (insn, 16, 16)]);

      /* If the next character in args is 'n', it will handle
         putting out the space.  */
      if (s[1] != 'n')
        (*info->fprintf_func) (info->stream, " ");
      break;
          }
        break;
      }

    case 'V':
      fput_const (extract_5_store (insn), info);
      break;
    case 'r':
      fput_const (extract_5r_store (insn), info);
      break;
    case 'R':
      fput_const (extract_5R_store (insn), info);
      break;
    case 'U':
      fput_const (extract_10U_store (insn), info);
      break;
    case 'B':
    case 'Q':
      fput_const (extract_5Q_store (insn), info);
      break;
    case 'i':
      fput_const (extract_11 (insn), info);
      break;
    case 'j':
      fput_const (extract_14 (insn), info);
      break;
    case 'k':
      fput_const (extract_21 (insn), info);
      break;
    case '<':
    case 'l':
      /* 16-bit long disp., PA2.0 wide only.  */
      fput_const (extract_16 (insn), info);
      break;
    case 'n':
      if (insn & 0x2)
        (*info->fprintf_func) (info->stream, ",n ");
      else
        (*info->fprintf_func) (info->stream, " ");
      break;
    case 'N':
      if ((insn & 0x20) && s[1])
        (*info->fprintf_func) (info->stream, ",n ");
      else if (insn & 0x20)
        (*info->fprintf_func) (info->stream, ",n");
      else if (s[1])
        (*info->fprintf_func) (info->stream, " ");
      break;
    case 'w':
      (*info->print_address_func)
        (memaddr + 8 + extract_12 (insn), info);
      break;
    case 'W':
      /* 17 bit PC-relative branch.  */
      (*info->print_address_func)
        ((memaddr + 8 + extract_17 (insn)), info);
      break;
    case 'z':
      /* 17 bit displacement.  This is an offset from a register
         so it gets disasssembled as just a number, not any sort
         of address.  */
      fput_const (extract_17 (insn), info);
      break;

    case 'Z':
      /* addil %r1 implicit output.  */
      (*info->fprintf_func) (info->stream, "%%r1");
      break;

    case 'Y':
      /* be,l %sr0,%r31 implicit output.  */
      (*info->fprintf_func) (info->stream, "%%sr0,%%r31");
      break;

    case '@':
      (*info->fprintf_func) (info->stream, "0");
      break;

    case '.':
      (*info->fprintf_func) (info->stream, "%d",
           GET_FIELD (insn, 24, 25));
      break;
    case '*':
      (*info->fprintf_func) (info->stream, "%d",
           GET_FIELD (insn, 22, 25));
      break;
    case '!':
      (*info->fprintf_func) (info->stream, "%%sar");
      break;
    case 'p':
      (*info->fprintf_func) (info->stream, "%d",
           31 - GET_FIELD (insn, 22, 26));
      break;
    case '~':
      {
        int num;
        num = GET_FIELD (insn, 20, 20) << 5;
        num |= GET_FIELD (insn, 22, 26);
        (*info->fprintf_func) (info->stream, "%d", 63 - num);
        break;
      }
    case 'P':
      (*info->fprintf_func) (info->stream, "%d",
           GET_FIELD (insn, 22, 26));
      break;
    case 'q':
      {
        int num;
        num = GET_FIELD (insn, 20, 20) << 5;
        num |= GET_FIELD (insn, 22, 26);
        (*info->fprintf_func) (info->stream, "%d", num);
        break;
      }
    case 'T':
      (*info->fprintf_func) (info->stream, "%d",
           32 - GET_FIELD (insn, 27, 31));
      break;
    case '%':
      {
        int num;
        num = (GET_FIELD (insn, 23, 23) + 1) * 32;
        num -= GET_FIELD (insn, 27, 31);
        (*info->fprintf_func) (info->stream, "%d", num);
        break;
      }
    case '|':
      {
        int num;
        num = (GET_FIELD (insn, 19, 19) + 1) * 32;
        num -= GET_FIELD (insn, 27, 31);
        (*info->fprintf_func) (info->stream, "%d", num);
        break;
      }
    case '$':
      fput_const (GET_FIELD (insn, 20, 28), info);
      break;
    case 'A':
      fput_const (GET_FIELD (insn, 6, 18), info);
      break;
    case 'D':
      fput_const (GET_FIELD (insn, 6, 31), info);
      break;
    case 'v':
      (*info->fprintf_func) (info->stream, ",%d",
           GET_FIELD (insn, 23, 25));
      break;
    case 'O':
      fput_const ((GET_FIELD (insn, 6,20) << 5 |
             GET_FIELD (insn, 27, 31)), info);
      break;
    case 'o':
      fput_const (GET_FIELD (insn, 6, 20), info);
      break;
    case '2':
      fput_const ((GET_FIELD (insn, 6, 22) << 5 |
             GET_FIELD (insn, 27, 31)), info);
      break;
    case '1':
      fput_const ((GET_FIELD (insn, 11, 20) << 5 |
             GET_FIELD (insn, 27, 31)), info);
      break;
    case '0':
      fput_const ((GET_FIELD (insn, 16, 20) << 5 |
             GET_FIELD (insn, 27, 31)), info);
      break;
    case 'u':
      (*info->fprintf_func) (info->stream, ",%d",
           GET_FIELD (insn, 23, 25));
      break;
    case 'F':
      /* if no destination completer and not before a completer
         for fcmp, need a space here */
      if (s[1] == 'G' || s[1] == '?')
        fputs_filtered
          (float_format_names[GET_FIELD (insn, 19, 20)], info);
      else
        (*info->fprintf_func)
          (info->stream, "%s ",
           float_format_names[GET_FIELD (insn, 19, 20)]);
      break;
    case 'G':
      (*info->fprintf_func)
        (info->stream, "%s ",
         float_format_names[GET_FIELD (insn, 17, 18)]);
      break;
    case 'H':
      if (GET_FIELD (insn, 26, 26) == 1)
        (*info->fprintf_func) (info->stream, "%s ",
             float_format_names[0]);
      else
        (*info->fprintf_func) (info->stream, "%s ",
             float_format_names[1]);
      break;
    case 'I':
      /* if no destination completer and not before a completer
         for fcmp, need a space here */
      if (s[1] == '?')
        fputs_filtered
          (float_format_names[GET_FIELD (insn, 20, 20)], info);
      else
        (*info->fprintf_func)
          (info->stream, "%s ",
           float_format_names[GET_FIELD (insn, 20, 20)]);
      break;

    case 'J':
      fput_const (extract_14 (insn), info);
      break;

    case '#':
      {
        int sign = GET_FIELD (insn, 31, 31);
        int imm10 = GET_FIELD (insn, 18, 27);
        int disp;

        if (sign)
          disp = (-1 << 10) | imm10;
        else
          disp = imm10;

        disp <<= 3;
        fput_const (disp, info);
        break;
      }
    case 'K':
    case 'd':
      {
        int sign = GET_FIELD (insn, 31, 31);
        int imm11 = GET_FIELD (insn, 18, 28);
        int disp;

        if (sign)
          disp = (-1 << 11) | imm11;
        else
          disp = imm11;

        disp <<= 2;
        fput_const (disp, info);
        break;
      }

    case '>':
    case 'y':
      {
        /* 16-bit long disp., PA2.0 wide only.  */
        int disp = extract_16 (insn);
        disp &= ~3;
        fput_const (disp, info);
        break;
      }

    case '&':
      {
        /* 16-bit long disp., PA2.0 wide only.  */
        int disp = extract_16 (insn);
        disp &= ~7;
        fput_const (disp, info);
        break;
      }

    case '_':
      break; /* Dealt with by '{' */

    case '{':
      {
        int sub = GET_FIELD (insn, 14, 16);
        int df = GET_FIELD (insn, 17, 18);
        int sf = GET_FIELD (insn, 19, 20);
        const char * const * source = float_format_names;
        const char * const * dest = float_format_names;
        char *t = "";
        if (sub == 4)
          {
      fputs_filtered (",UND ", info);
      break;
          }
        if ((sub & 3) == 3)
          t = ",t";
        if ((sub & 3) == 1)
          source = sub & 4 ? fcnv_ufixed_names : fcnv_fixed_names;
        if (sub & 2)
          dest = sub & 4 ? fcnv_ufixed_names : fcnv_fixed_names;

        (*info->fprintf_func) (info->stream, "%s%s%s ",
             t, source[sf], dest[df]);
        break;
      }

    case 'm':
      {
        int y = GET_FIELD (insn, 16, 18);

        if (y != 1)
          fput_const ((y ^ 1) - 1, info);
      }
      break;

    case 'h':
      {
        int cbit;

        cbit = GET_FIELD (insn, 16, 18);

        if (cbit > 0)
          (*info->fprintf_func) (info->stream, ",%d", cbit - 1);
        break;
      }

    case '=':
      {
        int cond = GET_FIELD (insn, 27, 31);

        if (cond == 0)
          fputs_filtered (" ", info);
        else if (cond == 1)
          fputs_filtered ("acc ", info);
        else if (cond == 2)
          fputs_filtered ("rej ", info);
        else if (cond == 5)
          fputs_filtered ("acc8 ", info);
        else if (cond == 6)
          fputs_filtered ("rej8 ", info);
        else if (cond == 9)
          fputs_filtered ("acc6 ", info);
        else if (cond == 13)
          fputs_filtered ("acc4 ", info);
        else if (cond == 17)
          fputs_filtered ("acc2 ", info);
        break;
      }

    case 'X':
      (*info->print_address_func)
        (memaddr + 8 + extract_22 (insn), info);
      break;
    case 'L':
      fputs_filtered (",%r2", info);
      break;
    default:
      (*info->fprintf_func) (info->stream, "%c", *s);
      break;
    }
      }
    return sizeof(insn);
  }
    }
  (*info->fprintf_func) (info->stream, "#%8x", insn);
  return sizeof(insn);
}

---