Subversion Repositories openrisc

/* Disassembler for the PA-RISC. Somewhat derived from sparc-pinsn.c.
   Copyright 1989, 1990, 1992, 1993, 1994, 1995, 1998, 1999, 2000, 2001, 2003,
   2005, 2007  Free Software Foundation, Inc.
 
   Contributed by the Center for Software Science at the
   University of Utah (pa-gdb-bugs@cs.utah.edu).
 
   This file is part of the GNU opcodes library.
 
   This library 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 3, or (at your option)
   any later version.
 
   It 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., 51 Franklin Street - Fifth Floor, Boston,
   MA 02110-1301, 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))
 
/* 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 (unsigned reg, disassemble_info *info)
{
  (*info->fprintf_func) (info->stream, reg ? reg_names[reg] : "r0");
}
 
static void
fput_fp_reg (unsigned reg, disassemble_info *info)
{
  (*info->fprintf_func) (info->stream, reg ? fp_reg_names[reg] : "fr0");
}
 
static void
fput_fp_reg_r (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 (unsigned reg, disassemble_info *info)
{
  (*info->fprintf_func) (info->stream, control_reg[reg]);
}
 
/* Print constants with sign.  */
 
static void
fput_const (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 (unsigned word)
{
  return GET_FIELD (word, 18, 18) << 2 | GET_FIELD (word, 16, 17);
}
 
static int
extract_5_load (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 (unsigned word)
{
  return low_sign_extend (word & MASK_5, 5);
}
 
/* Extract the immediate field from a break instruction.  */
 
static unsigned
extract_5r_store (unsigned word)
{
  return (word & MASK_5);
}
 
/* Extract the immediate field from a {sr}sm instruction.  */
 
static unsigned
extract_5R_store (unsigned word)
{
  return (word >> 16 & MASK_5);
}
 
/* Extract the 10 bit immediate field from a {sr}sm instruction.  */
 
static unsigned
extract_10U_store (unsigned word)
{
  return (word >> 16 & MASK_10);
}
 
/* Extract the immediate field from a bb instruction.  */
 
static unsigned
extract_5Q_store (unsigned word)
{
  return (word >> 21 & MASK_5);
}
 
/* Extract an 11 bit immediate field.  */
 
static int
extract_11 (unsigned word)
{
  return low_sign_extend (word & MASK_11, 11);
}
 
/* Extract a 14 bit immediate field.  */
 
static int
extract_14 (unsigned word)
{
  return low_sign_extend (word & MASK_14, 14);
}
 
/* Extract a 16 bit immediate field (PA2.0 wide only).  */
 
static int
extract_16 (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 (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 (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 (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 (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 (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)
	{
	  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':
		  fputs_filtered ("L%", info);
		  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.  */
		  fputs_filtered ("r1", info);
		  break;
 
		case 'Y':
		  /* be,l %sr0,%r31 implicit output.  */
		  fputs_filtered ("sr0,r31", info);
		  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 '!':
		  fputs_filtered ("sar", info);
		  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);
 
		    switch (cond)
		      {
		      case  0: fputs_filtered (" ", info); break;
		      case  1: fputs_filtered ("acc ", info); break;
		      case  2: fputs_filtered ("rej ", info); break;
		      case  5: fputs_filtered ("acc8 ", info); break;
		      case  6: fputs_filtered ("rej8 ", info); break;
		      case  9: fputs_filtered ("acc6 ", info); break;
		      case 13: fputs_filtered ("acc4 ", info); break;
		      case 17: fputs_filtered ("acc2 ", info); break;
		      default: break;
		      }
		    break;
		  }
 
		case 'X':
		  (*info->print_address_func)
		    (memaddr + 8 + extract_22 (insn), info);
		  break;
		case 'L':
		  fputs_filtered (",rp", info);
		  break;
		default:
		  (*info->fprintf_func) (info->stream, "%c", *s);
		  break;
		}
	    }
	  return sizeof (insn);
	}
    }
  (*info->fprintf_func) (info->stream, "#%8x", insn);
  return sizeof (insn);
}