/* Copyright (C) 1998-2025 Free Software Foundation, Inc.

   Contributed by David Mosberger-Tang <davidm@hpl.hp.com>

   This file is part of BFD, the Binary File Descriptor library.

   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 3 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., 51 Franklin Street - Fifth Floor, Boston,

   MA 02110-1301, USA.  */

/* Logically, this code should be part of libopcode but since some of

   the operand insertion/extraction functions help bfd to implement

   relocations, this code is included as part of cpu-ia64.c.  This

   avoids circular dependencies between libopcode and libbfd and also

   obviates the need for applications to link in libopcode when all

   they really want is libbfd.

   --davidm Mon Apr 13 22:14:02 1998 */

#include "../opcodes/ia64-opc.h"

#define NELEMS(a)  ((int) (sizeof (a) / sizeof ((a)[0])))

static const char*

ins_rsvd (const struct ia64_operand *self ATTRIBUTE_UNUSED,

    ia64_insn value ATTRIBUTE_UNUSED, ia64_insn *code ATTRIBUTE_UNUSED)

{

  return "internal error---this shouldn't happen";

}

static const char*

ext_rsvd (const struct ia64_operand *self ATTRIBUTE_UNUSED,

    ia64_insn code ATTRIBUTE_UNUSED, ia64_insn *valuep ATTRIBUTE_UNUSED)

{

  return "internal error---this shouldn't happen";

}

static const char*

ins_const (const struct ia64_operand *self ATTRIBUTE_UNUSED,

     ia64_insn value ATTRIBUTE_UNUSED, ia64_insn *code ATTRIBUTE_UNUSED)

{

  return 0;

}

static const char*

ext_const (const struct ia64_operand *self ATTRIBUTE_UNUSED,

     ia64_insn code ATTRIBUTE_UNUSED, ia64_insn *valuep ATTRIBUTE_UNUSED)

{

  return 0;

}

static const char*

ins_reg (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)

{

  if (value >= 1u << self->field[0].bits)

    return "register number out of range";

  *code |= value << self->field[0].shift;

  return 0;

}

static const char*

ext_reg (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)

{

  *valuep = ((code >> self->field[0].shift)

       & ((1u << self->field[0].bits) - 1));

  return 0;

}

static const char*

ins_immu (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)

{

  ia64_insn new_insn = 0;

  int i;

  for (i = 0; i < NELEMS (self->field) && self->field[i].bits; ++i)

    {

      new_insn |= ((value & ((((ia64_insn) 1) << self->field[i].bits) - 1))

     << self->field[i].shift);

      value >>= self->field[i].bits;

    }

  if (value)

    return "integer operand out of range";

  *code |= new_insn;

  return 0;

}

static const char*

ext_immu (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)

{

  uint64_t value = 0;

  int i, bits = 0, total = 0;

  for (i = 0; i < NELEMS (self->field) && self->field[i].bits; ++i)

    {

      bits = self->field[i].bits;

      value |= ((code >> self->field[i].shift)

    & (((uint64_t) 1 << bits) - 1)) << total;

      total += bits;

    }

  *valuep = value;

  return 0;

}

static const char*

ins_immu5b (const struct ia64_operand *self, ia64_insn value,

      ia64_insn *code)

{

  if (value < 32 || value > 63)

    return "value must be between 32 and 63";

  return ins_immu (self, value - 32, code);

}

static const char*

ext_immu5b (const struct ia64_operand *self, ia64_insn code,

      ia64_insn *valuep)

{

  const char *result;

  result = ext_immu (self, code, valuep);

  if (result)

    return result;

  *valuep = *valuep + 32;

  return 0;

}

static const char*

ins_immus8 (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)

{

  if (value & 0x7)

    return "value not an integer multiple of 8";

  return ins_immu (self, value >> 3, code);

}

static const char*

ext_immus8 (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)

{

  const char *result;

  result = ext_immu (self, code, valuep);

  if (result)

    return result;

  *valuep = *valuep << 3;

  return 0;

}

static const char*

ins_imms_scaled (const struct ia64_operand *self, ia64_insn value,

     ia64_insn *code, int scale)

{

  int64_t svalue = value, sign_bit = 0;

  ia64_insn new_insn = 0;

  int i;

  svalue >>= scale;

  for (i = 0; i < NELEMS (self->field) && self->field[i].bits; ++i)

    {

      new_insn |= ((svalue & ((((ia64_insn) 1) << self->field[i].bits) - 1))

     << self->field[i].shift);

      sign_bit = (svalue >> (self->field[i].bits - 1)) & 1;

      svalue >>= self->field[i].bits;

    }

  if ((!sign_bit && svalue != 0) || (sign_bit && svalue != -1))

    return "integer operand out of range";

  *code |= new_insn;

  return 0;

}

static const char*

ext_imms_scaled (const struct ia64_operand *self, ia64_insn code,

     ia64_insn *valuep, int scale)

{

  int i, bits = 0, total = 0;

  uint64_t val = 0, sign;

  for (i = 0; i < NELEMS (self->field) && self->field[i].bits; ++i)

    {

      bits = self->field[i].bits;

      val |= ((code >> self->field[i].shift)

        & (((uint64_t) 1 << bits) - 1)) << total;

      total += bits;

    }

  /* sign extend: */

  sign = (uint64_t) 1 << (total - 1);

  val = (val ^ sign) - sign;

  *valuep = val << scale;

  return 0;

}

static const char*

ins_imms (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)

{

  return ins_imms_scaled (self, value, code, 0);

}

static const char*

ins_immsu4 (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)

{

  value = ((value & 0xffffffff) ^ 0x80000000) - 0x80000000;

  return ins_imms_scaled (self, value, code, 0);

}

static const char*

ext_imms (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)

{

  return ext_imms_scaled (self, code, valuep, 0);

}

static const char*

ins_immsm1 (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)

{

  --value;

  return ins_imms_scaled (self, value, code, 0);

}

static const char*

ins_immsm1u4 (const struct ia64_operand *self, ia64_insn value,

        ia64_insn *code)

{

  value = ((value & 0xffffffff) ^ 0x80000000) - 0x80000000;

  --value;

  return ins_imms_scaled (self, value, code, 0);

}

static const char*

ext_immsm1 (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)

{

  const char *res = ext_imms_scaled (self, code, valuep, 0);

  ++*valuep;

  return res;

}

static const char*

ins_imms1 (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)

{

  return ins_imms_scaled (self, value, code, 1);

}

static const char*

ext_imms1 (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)

{

  return ext_imms_scaled (self, code, valuep, 1);

}

static const char*

ins_imms4 (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)

{

  return ins_imms_scaled (self, value, code, 4);

}

static const char*

ext_imms4 (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)

{

  return ext_imms_scaled (self, code, valuep, 4);

}

static const char*

ins_imms16 (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)

{

  return ins_imms_scaled (self, value, code, 16);

}

static const char*

ext_imms16 (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)

{

  return ext_imms_scaled (self, code, valuep, 16);

}

static const char*

ins_cimmu (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)

{

  ia64_insn mask = (((ia64_insn) 1) << self->field[0].bits) - 1;

  return ins_immu (self, value ^ mask, code);

}

static const char*

ext_cimmu (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)

{

  const char *result;

  ia64_insn mask;

  mask = (((ia64_insn) 1) << self->field[0].bits) - 1;

  result = ext_immu (self, code, valuep);

  if (!result)

    {

      mask = (((ia64_insn) 1) << self->field[0].bits) - 1;

      *valuep ^= mask;

    }

  return result;

}

static const char*

ins_cnt (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)

{

  --value;

  if (value >= (uint64_t) 1 << self->field[0].bits)

    return "count out of range";

  *code |= value << self->field[0].shift;

  return 0;

}

static const char*

ext_cnt (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)

{

  *valuep = ((code >> self->field[0].shift)

       & (((uint64_t) 1 << self->field[0].bits) - 1)) + 1;

  return 0;

}

static const char*

ins_cnt2b (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)

{

  --value;

  if (value > 2)

    return "count must be in range 1..3";

  *code |= value << self->field[0].shift;

  return 0;

}

static const char*

ext_cnt2b (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)

{

  *valuep = ((code >> self->field[0].shift) & 0x3) + 1;

  return 0;

}

static const char*

ins_cnt2c (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)

{

  switch (value)

    {

    case 0: value = 0; break;

    case 7: value = 1; break;

    case 15:  value = 2; break;

    case 16:  value = 3; break;

    default:  return "count must be 0, 7, 15, or 16";

    }

  *code |= value << self->field[0].shift;

  return 0;

}

static const char*

ext_cnt2c (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)

{

  ia64_insn value;

  value = (code >> self->field[0].shift) & 0x3;

  switch (value)

    {

    case 0: value =  0; break;

    case 1: value =  7; break;

    case 2: value = 15; break;

    case 3: value = 16; break;

    }

  *valuep = value;

  return 0;

}

static const char*

ins_cnt6a (const struct ia64_operand *self, ia64_insn value,

      ia64_insn *code)

{

  if (value < 1 || value > 64)

    return "value must be between 1 and 64";

  return ins_immu (self, value - 1, code);

}

static const char*

ext_cnt6a (const struct ia64_operand *self, ia64_insn code,

      ia64_insn *valuep)

{

  const char *result;

  result = ext_immu (self, code, valuep);

  if (result)

    return result;

  *valuep = *valuep + 1;

  return 0;

}

static const char*

ins_strd5b (const struct ia64_operand *self, ia64_insn value,

      ia64_insn *code)

{

  if (  value & 0x3f )

    return "value must be a multiple of 64";

  return ins_imms_scaled (self, value, code, 6);

}

static const char*

ext_strd5b (const struct ia64_operand *self, ia64_insn code,

      ia64_insn *valuep)

{

  return ext_imms_scaled (self, code, valuep, 6);

}

static const char*

ins_inc3 (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)

{

  int64_t val = value;

  uint64_t sign = 0;

  if (val < 0)

    {

      sign = 0x4;

      value = -value;

    }

  switch (value)

    {

    case  1:  value = 3; break;

    case  4:  value = 2; break;

    case  8:  value = 1; break;

    case 16:  value = 0; break;

    default:  return "count must be +/- 1, 4, 8, or 16";

    }

  *code |= (sign | value) << self->field[0].shift;

  return 0;

}

static const char*

ext_inc3 (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)

{

  int64_t val;

  int negate;

  val = (code >> self->field[0].shift) & 0x7;

  negate = val & 0x4;

  switch (val & 0x3)

    {

    case 0: val = 16; break;

    case 1: val =  8; break;

    case 2: val =  4; break;

    case 3: val =  1; break;

    }

  if (negate)

    val = -val;

  *valuep = val;

  return 0;

}

#define CST IA64_OPND_CLASS_CST

#define REG IA64_OPND_CLASS_REG

#define IND IA64_OPND_CLASS_IND

#define ABS IA64_OPND_CLASS_ABS

#define REL IA64_OPND_CLASS_REL

#define SDEC  IA64_OPND_FLAG_DECIMAL_SIGNED

#define UDEC  IA64_OPND_FLAG_DECIMAL_UNSIGNED

const struct ia64_operand elf64_ia64_operands[IA64_OPND_COUNT] =

  {

    /* constants: */

    { CST, ins_const, ext_const, "NIL",   {{ 0, 0}}, 0, "<none>" },

    { CST, ins_const, ext_const, "ar.csd",  {{ 0, 0}}, 0, "ar.csd" },

    { CST, ins_const, ext_const, "ar.ccv",  {{ 0, 0}}, 0, "ar.ccv" },

    { CST, ins_const, ext_const, "ar.pfs",  {{ 0, 0}}, 0, "ar.pfs" },

    { CST, ins_const, ext_const, "1",   {{ 0, 0}}, 0, "1" },

    { CST, ins_const, ext_const, "8",   {{ 0, 0}}, 0, "8" },

    { CST, ins_const, ext_const, "16",    {{ 0, 0}}, 0, "16" },

    { CST, ins_const, ext_const, "r0",    {{ 0, 0}}, 0, "r0" },

    { CST, ins_const, ext_const, "ip",    {{ 0, 0}}, 0, "ip" },

    { CST, ins_const, ext_const, "pr",    {{ 0, 0}}, 0, "pr" },

    { CST, ins_const, ext_const, "pr.rot",  {{ 0, 0}}, 0, "pr.rot" },

    { CST, ins_const, ext_const, "psr",   {{ 0, 0}}, 0, "psr" },

    { CST, ins_const, ext_const, "psr.l", {{ 0, 0}}, 0, "psr.l" },

    { CST, ins_const, ext_const, "psr.um",  {{ 0, 0}}, 0, "psr.um" },

    /* register operands: */

    { REG, ins_reg,   ext_reg,  "ar", {{ 7, 20}}, 0,    /* AR3 */

      "an application register" },

    { REG, ins_reg,   ext_reg,   "b", {{ 3,  6}}, 0,    /* B1 */

      "a branch register" },

    { REG, ins_reg,   ext_reg,   "b", {{ 3, 13}}, 0,    /* B2 */

      "a branch register"},

    { REG, ins_reg,   ext_reg,  "cr", {{ 7, 20}}, 0,    /* CR */

      "a control register"},

    { REG, ins_reg,   ext_reg,   "f", {{ 7,  6}}, 0,    /* F1 */

      "a floating-point register" },

    { REG, ins_reg,   ext_reg,   "f", {{ 7, 13}}, 0,    /* F2 */

      "a floating-point register" },

    { REG, ins_reg,   ext_reg,   "f", {{ 7, 20}}, 0,    /* F3 */

      "a floating-point register" },

    { REG, ins_reg,   ext_reg,   "f", {{ 7, 27}}, 0,    /* F4 */

      "a floating-point register" },

    { REG, ins_reg,   ext_reg,   "p", {{ 6,  6}}, 0,    /* P1 */

      "a predicate register" },

    { REG, ins_reg,   ext_reg,   "p", {{ 6, 27}}, 0,    /* P2 */

      "a predicate register" },

    { REG, ins_reg,   ext_reg,   "r", {{ 7,  6}}, 0,    /* R1 */

      "a general register" },

    { REG, ins_reg,   ext_reg,   "r", {{ 7, 13}}, 0,    /* R2 */

      "a general register" },

    { REG, ins_reg,   ext_reg,   "r", {{ 7, 20}}, 0,    /* R3 */

      "a general register" },

    { REG, ins_reg,   ext_reg,   "r", {{ 2, 20}}, 0,    /* R3_2 */

      "a general register r0-r3" },

    { REG, ins_reg,   ext_reg,   "dahr", {{ 3, 23}}, 0,   /* DAHR */

      "a dahr register dahr0-7" },

    /* memory operands: */

    { IND, ins_reg,   ext_reg,  "",      {{7, 20}}, 0,    /* MR3 */

      "a memory address" },

    /* indirect operands: */

    { IND, ins_reg,   ext_reg,  "cpuid", {{7, 20}}, 0,    /* CPUID_R3 */

      "a cpuid register" },

    { IND, ins_reg,   ext_reg,  "dbr",   {{7, 20}}, 0,    /* DBR_R3 */

      "a dbr register" },

    { IND, ins_reg,   ext_reg,  "dtr",   {{7, 20}}, 0,    /* DTR_R3 */

      "a dtr register" },

    { IND, ins_reg,   ext_reg,  "itr",   {{7, 20}}, 0,    /* ITR_R3 */

      "an itr register" },

    { IND, ins_reg,   ext_reg,  "ibr",   {{7, 20}}, 0,    /* IBR_R3 */

      "an ibr register" },

    { IND, ins_reg,   ext_reg,  "msr",   {{7, 20}}, 0,    /* MSR_R3 */

      "an msr register" },

    { IND, ins_reg,   ext_reg,  "pkr",   {{7, 20}}, 0,    /* PKR_R3 */

      "a pkr register" },

    { IND, ins_reg,   ext_reg,  "pmc",   {{7, 20}}, 0,    /* PMC_R3 */

      "a pmc register" },

    { IND, ins_reg,   ext_reg,  "pmd",   {{7, 20}}, 0,    /* PMD_R3 */

      "a pmd register" },

    { IND, ins_reg,   ext_reg,  "dahr",  {{7, 20}}, 0,    /* DAHR_R3 */

      "a dahr register" },

    { IND, ins_reg,   ext_reg,  "rr",    {{7, 20}}, 0,    /* RR_R3 */

      "an rr register" },

    /* immediate operands: */

    { ABS, ins_cimmu, ext_cimmu, 0, {{ 5, 20 }}, UDEC,    /* CCNT5 */

      "a 5-bit count (0-31)" },

    { ABS, ins_cnt,   ext_cnt,   0, {{ 2, 27 }}, UDEC,    /* CNT2a */

      "a 2-bit count (1-4)" },

    { ABS, ins_cnt2b, ext_cnt2b, 0, {{ 2, 27 }}, UDEC,    /* CNT2b */

      "a 2-bit count (1-3)" },

    { ABS, ins_cnt2c, ext_cnt2c, 0, {{ 2, 30 }}, UDEC,    /* CNT2c */

      "a count (0, 7, 15, or 16)" },

    { ABS, ins_immu,  ext_immu,  0, {{ 5, 14}}, UDEC,   /* CNT5 */

      "a 5-bit count (0-31)" },

    { ABS, ins_immu,  ext_immu,  0, {{ 6, 27}}, UDEC,   /* CNT6 */

      "a 6-bit count (0-63)" },

    { ABS, ins_cimmu, ext_cimmu, 0, {{ 6, 20}}, UDEC,   /* CPOS6a */

      "a 6-bit bit pos (0-63)" },

    { ABS, ins_cimmu, ext_cimmu, 0, {{ 6, 14}}, UDEC,   /* CPOS6b */

      "a 6-bit bit pos (0-63)" },

    { ABS, ins_cimmu, ext_cimmu, 0, {{ 6, 31}}, UDEC,   /* CPOS6c */

      "a 6-bit bit pos (0-63)" },

    { ABS, ins_imms,  ext_imms,  0, {{ 1, 36}}, SDEC,   /* IMM1 */

      "a 1-bit integer (-1, 0)" },

    { ABS, ins_immu,  ext_immu,  0, {{ 2, 13}}, UDEC,   /* IMMU2 */

      "a 2-bit unsigned (0-3)" },

    { ABS, ins_immu5b,  ext_immu5b,  0, {{ 5, 14}}, UDEC, /* IMMU5b */

      "a 5-bit unsigned (32 + (0-31))" },

    { ABS, ins_immu,  ext_immu,  0, {{ 7, 13}}, 0,    /* IMMU7a */

      "a 7-bit unsigned (0-127)" },

    { ABS, ins_immu,  ext_immu,  0, {{ 7, 20}}, 0,    /* IMMU7b */

      "a 7-bit unsigned (0-127)" },

    { ABS, ins_immu,  ext_immu,  0, {{ 7, 13}}, UDEC,   /* SOF */

      "a frame size (register count)" },

    { ABS, ins_immu,  ext_immu,  0, {{ 7, 20}}, UDEC,   /* SOL */

      "a local register count" },

    { ABS, ins_immus8,ext_immus8,0, {{ 4, 27}}, UDEC,   /* SOR */

      "a rotating register count (integer multiple of 8)" },

    { ABS, ins_imms,  ext_imms,  0,       /* IMM8 */

      {{ 7, 13}, { 1, 36}}, SDEC,

      "an 8-bit integer (-128-127)" },

    { ABS, ins_immsu4,  ext_imms,  0,       /* IMM8U4 */

      {{ 7, 13}, { 1, 36}}, SDEC,

      "an 8-bit signed integer for 32-bit unsigned compare (-128-127)" },

    { ABS, ins_immsm1,  ext_immsm1,  0,       /* IMM8M1 */

      {{ 7, 13}, { 1, 36}}, SDEC,

      "an 8-bit integer (-127-128)" },

    { ABS, ins_immsm1u4,  ext_immsm1,  0,     /* IMM8M1U4 */

      {{ 7, 13}, { 1, 36}}, SDEC,

      "an 8-bit integer for 32-bit unsigned compare (-127-(-1),1-128,0x100000000)" },

    { ABS, ins_immsm1,  ext_immsm1,  0,       /* IMM8M1U8 */

      {{ 7, 13}, { 1, 36}}, SDEC,

      "an 8-bit integer for 64-bit unsigned compare (-127-(-1),1-128,0x10000000000000000)" },

    { ABS, ins_immu,  ext_immu,  0, {{ 2, 33}, { 7, 20}}, 0,  /* IMMU9 */

      "a 9-bit unsigned (0-511)" },

    { ABS, ins_imms,  ext_imms,  0,       /* IMM9a */

      {{ 7,  6}, { 1, 27}, { 1, 36}}, SDEC,

      "a 9-bit integer (-256-255)" },

    { ABS, ins_imms,  ext_imms, 0,        /* IMM9b */

      {{ 7, 13}, { 1, 27}, { 1, 36}}, SDEC,

      "a 9-bit integer (-256-255)" },

    { ABS, ins_imms,  ext_imms, 0,        /* IMM14 */

      {{ 7, 13}, { 6, 27}, { 1, 36}}, SDEC,

      "a 14-bit integer (-8192-8191)" },

    { ABS, ins_immu,  ext_immu,  0,       /* IMMU16 */

      {{4,  6}, {11, 12}, { 1, 36}}, UDEC,

      "a 16-bit unsigned" },

    { ABS, ins_imms1, ext_imms1, 0,       /* IMM17 */

      {{ 7,  6}, { 8, 24}, { 1, 36}}, 0,

      "a 17-bit integer (-65536-65535)" },

    { ABS, ins_immu,  ext_immu,  0,       /* IMMU19 */

      {{4,  6}, {14, 12}, { 1, 36}}, UDEC,

      "a 19-bit unsigned" },

    { ABS, ins_immu,  ext_immu,  0, {{20,  6}, { 1, 36}}, 0,  /* IMMU21 */

      "a 21-bit unsigned" },

    { ABS, ins_imms,  ext_imms,  0,       /* IMM22 */

      {{ 7, 13}, { 9, 27}, { 5, 22}, { 1, 36}}, SDEC,

      "a 22-bit signed integer" },

    { ABS, ins_immu,  ext_immu,  0,       /* IMMU24 */

      {{21,  6}, { 2, 31}, { 1, 36}}, 0,

      "a 24-bit unsigned" },

    { ABS, ins_imms16,ext_imms16,0, {{27,  6}, { 1, 36}}, 0,  /* IMM44 */

      "a 44-bit unsigned (least 16 bits ignored/zeroes)" },

    { ABS, ins_rsvd,  ext_rsvd, 0, {{0,  0}}, 0,    /* IMMU62 */

      "a 62-bit unsigned" },

    { ABS, ins_rsvd,  ext_rsvd, 0, {{0,  0}}, 0,    /* IMMU64 */

      "a 64-bit unsigned" },

    { ABS, ins_inc3,  ext_inc3,  0, {{ 3, 13}}, SDEC,   /* INC3 */

      "an increment (+/- 1, 4, 8, or 16)" },

    { ABS, ins_cnt,   ext_cnt,   0, {{ 4, 27}}, UDEC,   /* LEN4 */

      "a 4-bit length (1-16)" },

    { ABS, ins_cnt,   ext_cnt,   0, {{ 6, 27}}, UDEC,   /* LEN6 */

      "a 6-bit length (1-64)" },

    { ABS, ins_immu,  ext_immu,  0, {{ 4, 20}}, 0,    /* MBTYPE4 */

      "a mix type (@rev, @mix, @shuf, @alt, or @brcst)" },

    { ABS, ins_immu,  ext_immu,  0, {{ 8, 20}}, 0,    /* MBTYPE8 */

      "an 8-bit mix type" },

    { ABS, ins_immu,  ext_immu,  0, {{ 6, 14}}, UDEC,   /* POS6 */

      "a 6-bit bit pos (0-63)" },

    { REL, ins_imms4, ext_imms4, 0, {{ 7,  6}, { 2, 33}}, 0,  /* TAG13 */

      "a branch tag" },

    { REL, ins_imms4, ext_imms4, 0, {{ 9, 24}}, 0,    /* TAG13b */

      "a branch tag" },

    { REL, ins_imms4, ext_imms4, 0, {{20,  6}, { 1, 36}}, 0,  /* TGT25 */

      "a branch target" },

    { REL, ins_imms4, ext_imms4, 0,       /* TGT25b */

      {{ 7,  6}, {13, 20}, { 1, 36}}, 0,

      "a branch target" },

    { REL, ins_imms4, ext_imms4, 0, {{20, 13}, { 1, 36}}, 0,  /* TGT25c */

      "a branch target" },

    { REL, ins_rsvd, ext_rsvd, 0, {{0, 0}}, 0,      /* TGT64  */

      "a branch target" },

    { ABS, ins_const, ext_const, 0, {{0, 0}}, 0,    /* LDXMOV */

      "ldxmov target" },

    { ABS, ins_cnt6a, ext_cnt6a, 0, {{6, 6}}, UDEC,   /* CNT6a */

      "lfetch count" },

    { ABS, ins_strd5b, ext_strd5b, 0, {{5, 13}}, SDEC,    /* STRD5b*/

      "lfetch stride" },

  };