1 /*
   2  * Copyright (c) 2002, 2016, Oracle and/or its affiliates. All rights reserved.
   3  * Copyright (c) 2012, 2016 SAP SE. All rights reserved.
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This code is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 only, as
   8  * published by the Free Software Foundation.
   9  *
  10  * This code is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * version 2 for more details (a copy is included in the LICENSE file that
  14  * accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License version
  17  * 2 along with this work; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.
  23  *
  24  */
  25 
  26 #ifndef CPU_PPC_VM_ASSEMBLER_PPC_HPP
  27 #define CPU_PPC_VM_ASSEMBLER_PPC_HPP
  28 
  29 #include "asm/register.hpp"
  30 
  31 // Address is an abstraction used to represent a memory location
  32 // as used in assembler instructions.
  33 // PPC instructions grok either baseReg + indexReg or baseReg + disp.
  34 class Address VALUE_OBJ_CLASS_SPEC {
  35  private:
  36   Register _base;         // Base register.
  37   Register _index;        // Index register.
  38   intptr_t _disp;         // Displacement.
  39 
  40  public:
  41   Address(Register b, Register i, address d = 0)
  42     : _base(b), _index(i), _disp((intptr_t)d) {
  43     assert(i == noreg || d == 0, "can't have both");
  44   }
  45 
  46   Address(Register b, address d = 0)
  47     : _base(b), _index(noreg), _disp((intptr_t)d) {}
  48 
  49   Address(Register b, intptr_t d)
  50     : _base(b), _index(noreg), _disp(d) {}
  51 
  52   Address(Register b, RegisterOrConstant roc)
  53     : _base(b), _index(noreg), _disp(0) {
  54     if (roc.is_constant()) _disp = roc.as_constant(); else _index = roc.as_register();
  55   }
  56 
  57   Address()
  58     : _base(noreg), _index(noreg), _disp(0) {}
  59 
  60   // accessors
  61   Register base()  const { return _base; }
  62   Register index() const { return _index; }
  63   int      disp()  const { return (int)_disp; }
  64   bool     is_const() const { return _base == noreg && _index == noreg; }
  65 };
  66 
  67 class AddressLiteral VALUE_OBJ_CLASS_SPEC {
  68  private:
  69   address          _address;
  70   RelocationHolder _rspec;
  71 
  72   RelocationHolder rspec_from_rtype(relocInfo::relocType rtype, address addr) {
  73     switch (rtype) {
  74     case relocInfo::external_word_type:
  75       return external_word_Relocation::spec(addr);
  76     case relocInfo::internal_word_type:
  77       return internal_word_Relocation::spec(addr);
  78     case relocInfo::opt_virtual_call_type:
  79       return opt_virtual_call_Relocation::spec();
  80     case relocInfo::static_call_type:
  81       return static_call_Relocation::spec();
  82     case relocInfo::runtime_call_type:
  83       return runtime_call_Relocation::spec();
  84     case relocInfo::none:
  85       return RelocationHolder();
  86     default:
  87       ShouldNotReachHere();
  88       return RelocationHolder();
  89     }
  90   }
  91 
  92  protected:
  93   // creation
  94   AddressLiteral() : _address(NULL), _rspec(NULL) {}
  95 
  96  public:
  97   AddressLiteral(address addr, RelocationHolder const& rspec)
  98     : _address(addr),
  99       _rspec(rspec) {}
 100 
 101   AddressLiteral(address addr, relocInfo::relocType rtype = relocInfo::none)
 102     : _address((address) addr),
 103       _rspec(rspec_from_rtype(rtype, (address) addr)) {}
 104 
 105   AddressLiteral(oop* addr, relocInfo::relocType rtype = relocInfo::none)
 106     : _address((address) addr),
 107       _rspec(rspec_from_rtype(rtype, (address) addr)) {}
 108 
 109   intptr_t value() const { return (intptr_t) _address; }
 110 
 111   const RelocationHolder& rspec() const { return _rspec; }
 112 };
 113 
 114 // Argument is an abstraction used to represent an outgoing
 115 // actual argument or an incoming formal parameter, whether
 116 // it resides in memory or in a register, in a manner consistent
 117 // with the PPC Application Binary Interface, or ABI. This is
 118 // often referred to as the native or C calling convention.
 119 
 120 class Argument VALUE_OBJ_CLASS_SPEC {
 121  private:
 122   int _number;  // The number of the argument.
 123  public:
 124   enum {
 125     // Only 8 registers may contain integer parameters.
 126     n_register_parameters = 8,
 127     // Can have up to 8 floating registers.
 128     n_float_register_parameters = 8,
 129 
 130     // PPC C calling conventions.
 131     // The first eight arguments are passed in int regs if they are int.
 132     n_int_register_parameters_c = 8,
 133     // The first thirteen float arguments are passed in float regs.
 134     n_float_register_parameters_c = 13,
 135     // Only the first 8 parameters are not placed on the stack. Aix disassembly
 136     // shows that xlC places all float args after argument 8 on the stack AND
 137     // in a register. This is not documented, but we follow this convention, too.
 138     n_regs_not_on_stack_c = 8,
 139   };
 140   // creation
 141   Argument(int number) : _number(number) {}
 142 
 143   int  number() const { return _number; }
 144 
 145   // Locating register-based arguments:
 146   bool is_register() const { return _number < n_register_parameters; }
 147 
 148   Register as_register() const {
 149     assert(is_register(), "must be a register argument");
 150     return as_Register(number() + R3_ARG1->encoding());
 151   }
 152 };
 153 
 154 #if !defined(ABI_ELFv2)
 155 // A ppc64 function descriptor.
 156 struct FunctionDescriptor VALUE_OBJ_CLASS_SPEC {
 157  private:
 158   address _entry;
 159   address _toc;
 160   address _env;
 161 
 162  public:
 163   inline address entry() const { return _entry; }
 164   inline address toc()   const { return _toc; }
 165   inline address env()   const { return _env; }
 166 
 167   inline void set_entry(address entry) { _entry = entry; }
 168   inline void set_toc(  address toc)   { _toc   = toc; }
 169   inline void set_env(  address env)   { _env   = env; }
 170 
 171   inline static ByteSize entry_offset() { return byte_offset_of(FunctionDescriptor, _entry); }
 172   inline static ByteSize toc_offset()   { return byte_offset_of(FunctionDescriptor, _toc); }
 173   inline static ByteSize env_offset()   { return byte_offset_of(FunctionDescriptor, _env); }
 174 
 175   // Friend functions can be called without loading toc and env.
 176   enum {
 177     friend_toc = 0xcafe,
 178     friend_env = 0xc0de
 179   };
 180 
 181   inline bool is_friend_function() const {
 182     return (toc() == (address) friend_toc) && (env() == (address) friend_env);
 183   }
 184 
 185   // Constructor for stack-allocated instances.
 186   FunctionDescriptor() {
 187     _entry = (address) 0xbad;
 188     _toc   = (address) 0xbad;
 189     _env   = (address) 0xbad;
 190   }
 191 };
 192 #endif
 193 
 194 
 195 // The PPC Assembler: Pure assembler doing NO optimizations on the
 196 // instruction level; i.e., what you write is what you get. The
 197 // Assembler is generating code into a CodeBuffer.
 198 
 199 class Assembler : public AbstractAssembler {
 200  protected:
 201   // Displacement routines
 202   static int  patched_branch(int dest_pos, int inst, int inst_pos);
 203   static int  branch_destination(int inst, int pos);
 204 
 205   friend class AbstractAssembler;
 206 
 207   // Code patchers need various routines like inv_wdisp()
 208   friend class NativeInstruction;
 209   friend class NativeGeneralJump;
 210   friend class Relocation;
 211 
 212  public:
 213 
 214   enum shifts {
 215     XO_21_29_SHIFT = 2,
 216     XO_21_30_SHIFT = 1,
 217     XO_27_29_SHIFT = 2,
 218     XO_30_31_SHIFT = 0,
 219     SPR_5_9_SHIFT  = 11u, // SPR_5_9 field in bits 11 -- 15
 220     SPR_0_4_SHIFT  = 16u, // SPR_0_4 field in bits 16 -- 20
 221     RS_SHIFT       = 21u, // RS field in bits 21 -- 25
 222     OPCODE_SHIFT   = 26u, // opcode in bits 26 -- 31
 223   };
 224 
 225   enum opcdxos_masks {
 226     XL_FORM_OPCODE_MASK = (63u << OPCODE_SHIFT) | (1023u << 1),
 227     ADDI_OPCODE_MASK    = (63u << OPCODE_SHIFT),
 228     ADDIS_OPCODE_MASK   = (63u << OPCODE_SHIFT),
 229     BXX_OPCODE_MASK     = (63u << OPCODE_SHIFT),
 230     BCXX_OPCODE_MASK    = (63u << OPCODE_SHIFT),
 231     // trap instructions
 232     TDI_OPCODE_MASK     = (63u << OPCODE_SHIFT),
 233     TWI_OPCODE_MASK     = (63u << OPCODE_SHIFT),
 234     TD_OPCODE_MASK      = (63u << OPCODE_SHIFT) | (1023u << 1),
 235     TW_OPCODE_MASK      = (63u << OPCODE_SHIFT) | (1023u << 1),
 236     LD_OPCODE_MASK      = (63u << OPCODE_SHIFT) | (3u << XO_30_31_SHIFT), // DS-FORM
 237     STD_OPCODE_MASK     = LD_OPCODE_MASK,
 238     STDU_OPCODE_MASK    = STD_OPCODE_MASK,
 239     STDX_OPCODE_MASK    = (63u << OPCODE_SHIFT) | (1023u << 1),
 240     STDUX_OPCODE_MASK   = STDX_OPCODE_MASK,
 241     STW_OPCODE_MASK     = (63u << OPCODE_SHIFT),
 242     STWU_OPCODE_MASK    = STW_OPCODE_MASK,
 243     STWX_OPCODE_MASK    = (63u << OPCODE_SHIFT) | (1023u << 1),
 244     STWUX_OPCODE_MASK   = STWX_OPCODE_MASK,
 245     MTCTR_OPCODE_MASK   = ~(31u << RS_SHIFT),
 246     ORI_OPCODE_MASK     = (63u << OPCODE_SHIFT),
 247     ORIS_OPCODE_MASK    = (63u << OPCODE_SHIFT),
 248     RLDICR_OPCODE_MASK  = (63u << OPCODE_SHIFT) | (7u << XO_27_29_SHIFT)
 249   };
 250 
 251   enum opcdxos {
 252     ADD_OPCODE    = (31u << OPCODE_SHIFT | 266u << 1),
 253     ADDC_OPCODE   = (31u << OPCODE_SHIFT |  10u << 1),
 254     ADDI_OPCODE   = (14u << OPCODE_SHIFT),
 255     ADDIS_OPCODE  = (15u << OPCODE_SHIFT),
 256     ADDIC__OPCODE = (13u << OPCODE_SHIFT),
 257     ADDE_OPCODE   = (31u << OPCODE_SHIFT | 138u << 1),
 258     ADDME_OPCODE  = (31u << OPCODE_SHIFT | 234u << 1),
 259     ADDZE_OPCODE  = (31u << OPCODE_SHIFT | 202u << 1),
 260     SUBF_OPCODE   = (31u << OPCODE_SHIFT |  40u << 1),
 261     SUBFC_OPCODE  = (31u << OPCODE_SHIFT |   8u << 1),
 262     SUBFE_OPCODE  = (31u << OPCODE_SHIFT | 136u << 1),
 263     SUBFIC_OPCODE = (8u  << OPCODE_SHIFT),
 264     SUBFME_OPCODE = (31u << OPCODE_SHIFT | 232u << 1),
 265     SUBFZE_OPCODE = (31u << OPCODE_SHIFT | 200u << 1),
 266     DIVW_OPCODE   = (31u << OPCODE_SHIFT | 491u << 1),
 267     MULLW_OPCODE  = (31u << OPCODE_SHIFT | 235u << 1),
 268     MULHW_OPCODE  = (31u << OPCODE_SHIFT |  75u << 1),
 269     MULHWU_OPCODE = (31u << OPCODE_SHIFT |  11u << 1),
 270     MULLI_OPCODE  = (7u  << OPCODE_SHIFT),
 271     AND_OPCODE    = (31u << OPCODE_SHIFT |  28u << 1),
 272     ANDI_OPCODE   = (28u << OPCODE_SHIFT),
 273     ANDIS_OPCODE  = (29u << OPCODE_SHIFT),
 274     ANDC_OPCODE   = (31u << OPCODE_SHIFT |  60u << 1),
 275     ORC_OPCODE    = (31u << OPCODE_SHIFT | 412u << 1),
 276     OR_OPCODE     = (31u << OPCODE_SHIFT | 444u << 1),
 277     ORI_OPCODE    = (24u << OPCODE_SHIFT),
 278     ORIS_OPCODE   = (25u << OPCODE_SHIFT),
 279     XOR_OPCODE    = (31u << OPCODE_SHIFT | 316u << 1),
 280     XORI_OPCODE   = (26u << OPCODE_SHIFT),
 281     XORIS_OPCODE  = (27u << OPCODE_SHIFT),
 282 
 283     NEG_OPCODE    = (31u << OPCODE_SHIFT | 104u << 1),
 284 
 285     RLWINM_OPCODE = (21u << OPCODE_SHIFT),
 286     CLRRWI_OPCODE = RLWINM_OPCODE,
 287     CLRLWI_OPCODE = RLWINM_OPCODE,
 288 
 289     RLWIMI_OPCODE = (20u << OPCODE_SHIFT),
 290 
 291     SLW_OPCODE    = (31u << OPCODE_SHIFT |  24u << 1),
 292     SLWI_OPCODE   = RLWINM_OPCODE,
 293     SRW_OPCODE    = (31u << OPCODE_SHIFT | 536u << 1),
 294     SRWI_OPCODE   = RLWINM_OPCODE,
 295     SRAW_OPCODE   = (31u << OPCODE_SHIFT | 792u << 1),
 296     SRAWI_OPCODE  = (31u << OPCODE_SHIFT | 824u << 1),
 297 
 298     CMP_OPCODE    = (31u << OPCODE_SHIFT |   0u << 1),
 299     CMPI_OPCODE   = (11u << OPCODE_SHIFT),
 300     CMPL_OPCODE   = (31u << OPCODE_SHIFT |  32u << 1),
 301     CMPLI_OPCODE  = (10u << OPCODE_SHIFT),
 302 
 303     ISEL_OPCODE   = (31u << OPCODE_SHIFT |  15u << 1),
 304 
 305     // Special purpose registers
 306     MTSPR_OPCODE  = (31u << OPCODE_SHIFT | 467u << 1),
 307     MFSPR_OPCODE  = (31u << OPCODE_SHIFT | 339u << 1),
 308 
 309     MTXER_OPCODE  = (MTSPR_OPCODE | 1 << SPR_0_4_SHIFT),
 310     MFXER_OPCODE  = (MFSPR_OPCODE | 1 << SPR_0_4_SHIFT),
 311 
 312     MTDSCR_OPCODE = (MTSPR_OPCODE | 3 << SPR_0_4_SHIFT),
 313     MFDSCR_OPCODE = (MFSPR_OPCODE | 3 << SPR_0_4_SHIFT),
 314 
 315     MTLR_OPCODE   = (MTSPR_OPCODE | 8 << SPR_0_4_SHIFT),
 316     MFLR_OPCODE   = (MFSPR_OPCODE | 8 << SPR_0_4_SHIFT),
 317 
 318     MTCTR_OPCODE  = (MTSPR_OPCODE | 9 << SPR_0_4_SHIFT),
 319     MFCTR_OPCODE  = (MFSPR_OPCODE | 9 << SPR_0_4_SHIFT),
 320 
 321     // Attention: Higher and lower half are inserted in reversed order.
 322     MTTFHAR_OPCODE   = (MTSPR_OPCODE | 4 << SPR_5_9_SHIFT | 0 << SPR_0_4_SHIFT),
 323     MFTFHAR_OPCODE   = (MFSPR_OPCODE | 4 << SPR_5_9_SHIFT | 0 << SPR_0_4_SHIFT),
 324     MTTFIAR_OPCODE   = (MTSPR_OPCODE | 4 << SPR_5_9_SHIFT | 1 << SPR_0_4_SHIFT),
 325     MFTFIAR_OPCODE   = (MFSPR_OPCODE | 4 << SPR_5_9_SHIFT | 1 << SPR_0_4_SHIFT),
 326     MTTEXASR_OPCODE  = (MTSPR_OPCODE | 4 << SPR_5_9_SHIFT | 2 << SPR_0_4_SHIFT),
 327     MFTEXASR_OPCODE  = (MFSPR_OPCODE | 4 << SPR_5_9_SHIFT | 2 << SPR_0_4_SHIFT),
 328     MTTEXASRU_OPCODE = (MTSPR_OPCODE | 4 << SPR_5_9_SHIFT | 3 << SPR_0_4_SHIFT),
 329     MFTEXASRU_OPCODE = (MFSPR_OPCODE | 4 << SPR_5_9_SHIFT | 3 << SPR_0_4_SHIFT),
 330 
 331     MTVRSAVE_OPCODE  = (MTSPR_OPCODE | 8 << SPR_5_9_SHIFT | 0 << SPR_0_4_SHIFT),
 332     MFVRSAVE_OPCODE  = (MFSPR_OPCODE | 8 << SPR_5_9_SHIFT | 0 << SPR_0_4_SHIFT),
 333 
 334     MFTB_OPCODE   = (MFSPR_OPCODE | 8 << SPR_5_9_SHIFT | 12 << SPR_0_4_SHIFT),
 335 
 336     MTCRF_OPCODE  = (31u << OPCODE_SHIFT | 144u << 1),
 337     MFCR_OPCODE   = (31u << OPCODE_SHIFT | 19u << 1),
 338     MCRF_OPCODE   = (19u << OPCODE_SHIFT | 0u << 1),
 339 
 340     // condition register logic instructions
 341     CRAND_OPCODE  = (19u << OPCODE_SHIFT | 257u << 1),
 342     CRNAND_OPCODE = (19u << OPCODE_SHIFT | 225u << 1),
 343     CROR_OPCODE   = (19u << OPCODE_SHIFT | 449u << 1),
 344     CRXOR_OPCODE  = (19u << OPCODE_SHIFT | 193u << 1),
 345     CRNOR_OPCODE  = (19u << OPCODE_SHIFT |  33u << 1),
 346     CREQV_OPCODE  = (19u << OPCODE_SHIFT | 289u << 1),
 347     CRANDC_OPCODE = (19u << OPCODE_SHIFT | 129u << 1),
 348     CRORC_OPCODE  = (19u << OPCODE_SHIFT | 417u << 1),
 349 
 350     BCLR_OPCODE   = (19u << OPCODE_SHIFT | 16u << 1),
 351     BXX_OPCODE      = (18u << OPCODE_SHIFT),
 352     BCXX_OPCODE     = (16u << OPCODE_SHIFT),
 353 
 354     // CTR-related opcodes
 355     BCCTR_OPCODE  = (19u << OPCODE_SHIFT | 528u << 1),
 356 
 357     LWZ_OPCODE   = (32u << OPCODE_SHIFT),
 358     LWZX_OPCODE  = (31u << OPCODE_SHIFT |  23u << 1),
 359     LWZU_OPCODE  = (33u << OPCODE_SHIFT),
 360     LWBRX_OPCODE = (31u << OPCODE_SHIFT |  534 << 1),
 361 
 362     LHA_OPCODE   = (42u << OPCODE_SHIFT),
 363     LHAX_OPCODE  = (31u << OPCODE_SHIFT | 343u << 1),
 364     LHAU_OPCODE  = (43u << OPCODE_SHIFT),
 365 
 366     LHZ_OPCODE   = (40u << OPCODE_SHIFT),
 367     LHZX_OPCODE  = (31u << OPCODE_SHIFT | 279u << 1),
 368     LHZU_OPCODE  = (41u << OPCODE_SHIFT),
 369     LHBRX_OPCODE = (31u << OPCODE_SHIFT |  790 << 1),
 370 
 371     LBZ_OPCODE   = (34u << OPCODE_SHIFT),
 372     LBZX_OPCODE  = (31u << OPCODE_SHIFT |  87u << 1),
 373     LBZU_OPCODE  = (35u << OPCODE_SHIFT),
 374 
 375     STW_OPCODE   = (36u << OPCODE_SHIFT),
 376     STWX_OPCODE  = (31u << OPCODE_SHIFT | 151u << 1),
 377     STWU_OPCODE  = (37u << OPCODE_SHIFT),
 378     STWUX_OPCODE = (31u << OPCODE_SHIFT | 183u << 1),
 379 
 380     STH_OPCODE   = (44u << OPCODE_SHIFT),
 381     STHX_OPCODE  = (31u << OPCODE_SHIFT | 407u << 1),
 382     STHU_OPCODE  = (45u << OPCODE_SHIFT),
 383 
 384     STB_OPCODE   = (38u << OPCODE_SHIFT),
 385     STBX_OPCODE  = (31u << OPCODE_SHIFT | 215u << 1),
 386     STBU_OPCODE  = (39u << OPCODE_SHIFT),
 387 
 388     EXTSB_OPCODE = (31u << OPCODE_SHIFT | 954u << 1),
 389     EXTSH_OPCODE = (31u << OPCODE_SHIFT | 922u << 1),
 390     EXTSW_OPCODE = (31u << OPCODE_SHIFT | 986u << 1),               // X-FORM
 391 
 392     // 32 bit opcode encodings
 393 
 394     LWA_OPCODE    = (58u << OPCODE_SHIFT |   2u << XO_30_31_SHIFT), // DS-FORM
 395     LWAX_OPCODE   = (31u << OPCODE_SHIFT | 341u << XO_21_30_SHIFT), // X-FORM
 396 
 397     CNTLZW_OPCODE = (31u << OPCODE_SHIFT |  26u << XO_21_30_SHIFT), // X-FORM
 398 
 399     // 64 bit opcode encodings
 400 
 401     LD_OPCODE     = (58u << OPCODE_SHIFT |   0u << XO_30_31_SHIFT), // DS-FORM
 402     LDU_OPCODE    = (58u << OPCODE_SHIFT |   1u << XO_30_31_SHIFT), // DS-FORM
 403     LDX_OPCODE    = (31u << OPCODE_SHIFT |  21u << XO_21_30_SHIFT), // X-FORM
 404 
 405     STD_OPCODE    = (62u << OPCODE_SHIFT |   0u << XO_30_31_SHIFT), // DS-FORM
 406     STDU_OPCODE   = (62u << OPCODE_SHIFT |   1u << XO_30_31_SHIFT), // DS-FORM
 407     STDUX_OPCODE  = (31u << OPCODE_SHIFT | 181u << 1),                  // X-FORM
 408     STDX_OPCODE   = (31u << OPCODE_SHIFT | 149u << XO_21_30_SHIFT), // X-FORM
 409 
 410     RLDICR_OPCODE = (30u << OPCODE_SHIFT |   1u << XO_27_29_SHIFT), // MD-FORM
 411     RLDICL_OPCODE = (30u << OPCODE_SHIFT |   0u << XO_27_29_SHIFT), // MD-FORM
 412     RLDIC_OPCODE  = (30u << OPCODE_SHIFT |   2u << XO_27_29_SHIFT), // MD-FORM
 413     RLDIMI_OPCODE = (30u << OPCODE_SHIFT |   3u << XO_27_29_SHIFT), // MD-FORM
 414 
 415     SRADI_OPCODE  = (31u << OPCODE_SHIFT | 413u << XO_21_29_SHIFT), // XS-FORM
 416 
 417     SLD_OPCODE    = (31u << OPCODE_SHIFT |  27u << 1),              // X-FORM
 418     SRD_OPCODE    = (31u << OPCODE_SHIFT | 539u << 1),              // X-FORM
 419     SRAD_OPCODE   = (31u << OPCODE_SHIFT | 794u << 1),              // X-FORM
 420 
 421     MULLD_OPCODE  = (31u << OPCODE_SHIFT | 233u << 1),              // XO-FORM
 422     MULHD_OPCODE  = (31u << OPCODE_SHIFT |  73u << 1),              // XO-FORM
 423     MULHDU_OPCODE = (31u << OPCODE_SHIFT |   9u << 1),              // XO-FORM
 424     DIVD_OPCODE   = (31u << OPCODE_SHIFT | 489u << 1),              // XO-FORM
 425 
 426     CNTLZD_OPCODE = (31u << OPCODE_SHIFT |  58u << XO_21_30_SHIFT), // X-FORM
 427     NAND_OPCODE   = (31u << OPCODE_SHIFT | 476u << XO_21_30_SHIFT), // X-FORM
 428     NOR_OPCODE    = (31u << OPCODE_SHIFT | 124u << XO_21_30_SHIFT), // X-FORM
 429 
 430 
 431     // opcodes only used for floating arithmetic
 432     FADD_OPCODE   = (63u << OPCODE_SHIFT |  21u << 1),
 433     FADDS_OPCODE  = (59u << OPCODE_SHIFT |  21u << 1),
 434     FCMPU_OPCODE  = (63u << OPCODE_SHIFT |  00u << 1),
 435     FDIV_OPCODE   = (63u << OPCODE_SHIFT |  18u << 1),
 436     FDIVS_OPCODE  = (59u << OPCODE_SHIFT |  18u << 1),
 437     FMR_OPCODE    = (63u << OPCODE_SHIFT |  72u << 1),
 438     // These are special Power6 opcodes, reused for "lfdepx" and "stfdepx"
 439     // on Power7.  Do not use.
 440     // MFFGPR_OPCODE  = (31u << OPCODE_SHIFT | 607u << 1),
 441     // MFTGPR_OPCODE  = (31u << OPCODE_SHIFT | 735u << 1),
 442     CMPB_OPCODE    = (31u << OPCODE_SHIFT |  508  << 1),
 443     POPCNTB_OPCODE = (31u << OPCODE_SHIFT |  122  << 1),
 444     POPCNTW_OPCODE = (31u << OPCODE_SHIFT |  378  << 1),
 445     POPCNTD_OPCODE = (31u << OPCODE_SHIFT |  506  << 1),
 446     FABS_OPCODE    = (63u << OPCODE_SHIFT |  264u << 1),
 447     FNABS_OPCODE   = (63u << OPCODE_SHIFT |  136u << 1),
 448     FMUL_OPCODE    = (63u << OPCODE_SHIFT |   25u << 1),
 449     FMULS_OPCODE   = (59u << OPCODE_SHIFT |   25u << 1),
 450     FNEG_OPCODE    = (63u << OPCODE_SHIFT |   40u << 1),
 451     FSUB_OPCODE    = (63u << OPCODE_SHIFT |   20u << 1),
 452     FSUBS_OPCODE   = (59u << OPCODE_SHIFT |   20u << 1),
 453 
 454     // PPC64-internal FPU conversion opcodes
 455     FCFID_OPCODE   = (63u << OPCODE_SHIFT |  846u << 1),
 456     FCFIDS_OPCODE  = (59u << OPCODE_SHIFT |  846u << 1),
 457     FCTID_OPCODE   = (63u << OPCODE_SHIFT |  814u << 1),
 458     FCTIDZ_OPCODE  = (63u << OPCODE_SHIFT |  815u << 1),
 459     FCTIW_OPCODE   = (63u << OPCODE_SHIFT |   14u << 1),
 460     FCTIWZ_OPCODE  = (63u << OPCODE_SHIFT |   15u << 1),
 461     FRSP_OPCODE    = (63u << OPCODE_SHIFT |   12u << 1),
 462 
 463     // Fused multiply-accumulate instructions.
 464     FMADD_OPCODE   = (63u << OPCODE_SHIFT |   29u << 1),
 465     FMADDS_OPCODE  = (59u << OPCODE_SHIFT |   29u << 1),
 466     FMSUB_OPCODE   = (63u << OPCODE_SHIFT |   28u << 1),
 467     FMSUBS_OPCODE  = (59u << OPCODE_SHIFT |   28u << 1),
 468     FNMADD_OPCODE  = (63u << OPCODE_SHIFT |   31u << 1),
 469     FNMADDS_OPCODE = (59u << OPCODE_SHIFT |   31u << 1),
 470     FNMSUB_OPCODE  = (63u << OPCODE_SHIFT |   30u << 1),
 471     FNMSUBS_OPCODE = (59u << OPCODE_SHIFT |   30u << 1),
 472 
 473     LFD_OPCODE     = (50u << OPCODE_SHIFT |   00u << 1),
 474     LFDU_OPCODE    = (51u << OPCODE_SHIFT |   00u << 1),
 475     LFDX_OPCODE    = (31u << OPCODE_SHIFT |  599u << 1),
 476     LFS_OPCODE     = (48u << OPCODE_SHIFT |   00u << 1),
 477     LFSU_OPCODE    = (49u << OPCODE_SHIFT |   00u << 1),
 478     LFSX_OPCODE    = (31u << OPCODE_SHIFT |  535u << 1),
 479 
 480     STFD_OPCODE    = (54u << OPCODE_SHIFT |   00u << 1),
 481     STFDU_OPCODE   = (55u << OPCODE_SHIFT |   00u << 1),
 482     STFDX_OPCODE   = (31u << OPCODE_SHIFT |  727u << 1),
 483     STFS_OPCODE    = (52u << OPCODE_SHIFT |   00u << 1),
 484     STFSU_OPCODE   = (53u << OPCODE_SHIFT |   00u << 1),
 485     STFSX_OPCODE   = (31u << OPCODE_SHIFT |  663u << 1),
 486 
 487     FSQRT_OPCODE   = (63u << OPCODE_SHIFT |   22u << 1),            // A-FORM
 488     FSQRTS_OPCODE  = (59u << OPCODE_SHIFT |   22u << 1),            // A-FORM
 489 
 490     // Vector instruction support for >= Power6
 491     // Vector Storage Access
 492     LVEBX_OPCODE   = (31u << OPCODE_SHIFT |    7u << 1),
 493     LVEHX_OPCODE   = (31u << OPCODE_SHIFT |   39u << 1),
 494     LVEWX_OPCODE   = (31u << OPCODE_SHIFT |   71u << 1),
 495     LVX_OPCODE     = (31u << OPCODE_SHIFT |  103u << 1),
 496     LVXL_OPCODE    = (31u << OPCODE_SHIFT |  359u << 1),
 497     STVEBX_OPCODE  = (31u << OPCODE_SHIFT |  135u << 1),
 498     STVEHX_OPCODE  = (31u << OPCODE_SHIFT |  167u << 1),
 499     STVEWX_OPCODE  = (31u << OPCODE_SHIFT |  199u << 1),
 500     STVX_OPCODE    = (31u << OPCODE_SHIFT |  231u << 1),
 501     STVXL_OPCODE   = (31u << OPCODE_SHIFT |  487u << 1),
 502     LVSL_OPCODE    = (31u << OPCODE_SHIFT |    6u << 1),
 503     LVSR_OPCODE    = (31u << OPCODE_SHIFT |   38u << 1),
 504 
 505     // Vector-Scalar (VSX) instruction support.
 506     LXVD2X_OPCODE  = (31u << OPCODE_SHIFT |  844u << 1),
 507     STXVD2X_OPCODE = (31u << OPCODE_SHIFT |  972u << 1),
 508     MTVSRD_OPCODE  = (31u << OPCODE_SHIFT |  179u << 1),
 509     MFVSRD_OPCODE  = (31u << OPCODE_SHIFT |   51u << 1),
 510     MTVSRWA_OPCODE = (31u << OPCODE_SHIFT |  211u << 1),
 511 
 512     // Vector Permute and Formatting
 513     VPKPX_OPCODE   = (4u  << OPCODE_SHIFT |  782u     ),
 514     VPKSHSS_OPCODE = (4u  << OPCODE_SHIFT |  398u     ),
 515     VPKSWSS_OPCODE = (4u  << OPCODE_SHIFT |  462u     ),
 516     VPKSHUS_OPCODE = (4u  << OPCODE_SHIFT |  270u     ),
 517     VPKSWUS_OPCODE = (4u  << OPCODE_SHIFT |  334u     ),
 518     VPKUHUM_OPCODE = (4u  << OPCODE_SHIFT |   14u     ),
 519     VPKUWUM_OPCODE = (4u  << OPCODE_SHIFT |   78u     ),
 520     VPKUHUS_OPCODE = (4u  << OPCODE_SHIFT |  142u     ),
 521     VPKUWUS_OPCODE = (4u  << OPCODE_SHIFT |  206u     ),
 522     VUPKHPX_OPCODE = (4u  << OPCODE_SHIFT |  846u     ),
 523     VUPKHSB_OPCODE = (4u  << OPCODE_SHIFT |  526u     ),
 524     VUPKHSH_OPCODE = (4u  << OPCODE_SHIFT |  590u     ),
 525     VUPKLPX_OPCODE = (4u  << OPCODE_SHIFT |  974u     ),
 526     VUPKLSB_OPCODE = (4u  << OPCODE_SHIFT |  654u     ),
 527     VUPKLSH_OPCODE = (4u  << OPCODE_SHIFT |  718u     ),
 528 
 529     VMRGHB_OPCODE  = (4u  << OPCODE_SHIFT |   12u     ),
 530     VMRGHW_OPCODE  = (4u  << OPCODE_SHIFT |  140u     ),
 531     VMRGHH_OPCODE  = (4u  << OPCODE_SHIFT |   76u     ),
 532     VMRGLB_OPCODE  = (4u  << OPCODE_SHIFT |  268u     ),
 533     VMRGLW_OPCODE  = (4u  << OPCODE_SHIFT |  396u     ),
 534     VMRGLH_OPCODE  = (4u  << OPCODE_SHIFT |  332u     ),
 535 
 536     VSPLT_OPCODE   = (4u  << OPCODE_SHIFT |  524u     ),
 537     VSPLTH_OPCODE  = (4u  << OPCODE_SHIFT |  588u     ),
 538     VSPLTW_OPCODE  = (4u  << OPCODE_SHIFT |  652u     ),
 539     VSPLTISB_OPCODE= (4u  << OPCODE_SHIFT |  780u     ),
 540     VSPLTISH_OPCODE= (4u  << OPCODE_SHIFT |  844u     ),
 541     VSPLTISW_OPCODE= (4u  << OPCODE_SHIFT |  908u     ),
 542 
 543     VPERM_OPCODE   = (4u  << OPCODE_SHIFT |   43u     ),
 544     VSEL_OPCODE    = (4u  << OPCODE_SHIFT |   42u     ),
 545 
 546     VSL_OPCODE     = (4u  << OPCODE_SHIFT |  452u     ),
 547     VSLDOI_OPCODE  = (4u  << OPCODE_SHIFT |   44u     ),
 548     VSLO_OPCODE    = (4u  << OPCODE_SHIFT | 1036u     ),
 549     VSR_OPCODE     = (4u  << OPCODE_SHIFT |  708u     ),
 550     VSRO_OPCODE    = (4u  << OPCODE_SHIFT | 1100u     ),
 551 
 552     // Vector Integer
 553     VADDCUW_OPCODE = (4u  << OPCODE_SHIFT |  384u     ),
 554     VADDSHS_OPCODE = (4u  << OPCODE_SHIFT |  832u     ),
 555     VADDSBS_OPCODE = (4u  << OPCODE_SHIFT |  768u     ),
 556     VADDSWS_OPCODE = (4u  << OPCODE_SHIFT |  896u     ),
 557     VADDUBM_OPCODE = (4u  << OPCODE_SHIFT |    0u     ),
 558     VADDUWM_OPCODE = (4u  << OPCODE_SHIFT |  128u     ),
 559     VADDUHM_OPCODE = (4u  << OPCODE_SHIFT |   64u     ),
 560     VADDUBS_OPCODE = (4u  << OPCODE_SHIFT |  512u     ),
 561     VADDUWS_OPCODE = (4u  << OPCODE_SHIFT |  640u     ),
 562     VADDUHS_OPCODE = (4u  << OPCODE_SHIFT |  576u     ),
 563     VSUBCUW_OPCODE = (4u  << OPCODE_SHIFT | 1408u     ),
 564     VSUBSHS_OPCODE = (4u  << OPCODE_SHIFT | 1856u     ),
 565     VSUBSBS_OPCODE = (4u  << OPCODE_SHIFT | 1792u     ),
 566     VSUBSWS_OPCODE = (4u  << OPCODE_SHIFT | 1920u     ),
 567     VSUBUBM_OPCODE = (4u  << OPCODE_SHIFT | 1024u     ),
 568     VSUBUWM_OPCODE = (4u  << OPCODE_SHIFT | 1152u     ),
 569     VSUBUHM_OPCODE = (4u  << OPCODE_SHIFT | 1088u     ),
 570     VSUBUBS_OPCODE = (4u  << OPCODE_SHIFT | 1536u     ),
 571     VSUBUWS_OPCODE = (4u  << OPCODE_SHIFT | 1664u     ),
 572     VSUBUHS_OPCODE = (4u  << OPCODE_SHIFT | 1600u     ),
 573 
 574     VMULESB_OPCODE = (4u  << OPCODE_SHIFT |  776u     ),
 575     VMULEUB_OPCODE = (4u  << OPCODE_SHIFT |  520u     ),
 576     VMULESH_OPCODE = (4u  << OPCODE_SHIFT |  840u     ),
 577     VMULEUH_OPCODE = (4u  << OPCODE_SHIFT |  584u     ),
 578     VMULOSB_OPCODE = (4u  << OPCODE_SHIFT |  264u     ),
 579     VMULOUB_OPCODE = (4u  << OPCODE_SHIFT |    8u     ),
 580     VMULOSH_OPCODE = (4u  << OPCODE_SHIFT |  328u     ),
 581     VMULOUH_OPCODE = (4u  << OPCODE_SHIFT |   72u     ),
 582     VMHADDSHS_OPCODE=(4u  << OPCODE_SHIFT |   32u     ),
 583     VMHRADDSHS_OPCODE=(4u << OPCODE_SHIFT |   33u     ),
 584     VMLADDUHM_OPCODE=(4u  << OPCODE_SHIFT |   34u     ),
 585     VMSUBUHM_OPCODE= (4u  << OPCODE_SHIFT |   36u     ),
 586     VMSUMMBM_OPCODE= (4u  << OPCODE_SHIFT |   37u     ),
 587     VMSUMSHM_OPCODE= (4u  << OPCODE_SHIFT |   40u     ),
 588     VMSUMSHS_OPCODE= (4u  << OPCODE_SHIFT |   41u     ),
 589     VMSUMUHM_OPCODE= (4u  << OPCODE_SHIFT |   38u     ),
 590     VMSUMUHS_OPCODE= (4u  << OPCODE_SHIFT |   39u     ),
 591 
 592     VSUMSWS_OPCODE = (4u  << OPCODE_SHIFT | 1928u     ),
 593     VSUM2SWS_OPCODE= (4u  << OPCODE_SHIFT | 1672u     ),
 594     VSUM4SBS_OPCODE= (4u  << OPCODE_SHIFT | 1800u     ),
 595     VSUM4UBS_OPCODE= (4u  << OPCODE_SHIFT | 1544u     ),
 596     VSUM4SHS_OPCODE= (4u  << OPCODE_SHIFT | 1608u     ),
 597 
 598     VAVGSB_OPCODE  = (4u  << OPCODE_SHIFT | 1282u     ),
 599     VAVGSW_OPCODE  = (4u  << OPCODE_SHIFT | 1410u     ),
 600     VAVGSH_OPCODE  = (4u  << OPCODE_SHIFT | 1346u     ),
 601     VAVGUB_OPCODE  = (4u  << OPCODE_SHIFT | 1026u     ),
 602     VAVGUW_OPCODE  = (4u  << OPCODE_SHIFT | 1154u     ),
 603     VAVGUH_OPCODE  = (4u  << OPCODE_SHIFT | 1090u     ),
 604 
 605     VMAXSB_OPCODE  = (4u  << OPCODE_SHIFT |  258u     ),
 606     VMAXSW_OPCODE  = (4u  << OPCODE_SHIFT |  386u     ),
 607     VMAXSH_OPCODE  = (4u  << OPCODE_SHIFT |  322u     ),
 608     VMAXUB_OPCODE  = (4u  << OPCODE_SHIFT |    2u     ),
 609     VMAXUW_OPCODE  = (4u  << OPCODE_SHIFT |  130u     ),
 610     VMAXUH_OPCODE  = (4u  << OPCODE_SHIFT |   66u     ),
 611     VMINSB_OPCODE  = (4u  << OPCODE_SHIFT |  770u     ),
 612     VMINSW_OPCODE  = (4u  << OPCODE_SHIFT |  898u     ),
 613     VMINSH_OPCODE  = (4u  << OPCODE_SHIFT |  834u     ),
 614     VMINUB_OPCODE  = (4u  << OPCODE_SHIFT |  514u     ),
 615     VMINUW_OPCODE  = (4u  << OPCODE_SHIFT |  642u     ),
 616     VMINUH_OPCODE  = (4u  << OPCODE_SHIFT |  578u     ),
 617 
 618     VCMPEQUB_OPCODE= (4u  << OPCODE_SHIFT |    6u     ),
 619     VCMPEQUH_OPCODE= (4u  << OPCODE_SHIFT |   70u     ),
 620     VCMPEQUW_OPCODE= (4u  << OPCODE_SHIFT |  134u     ),
 621     VCMPGTSH_OPCODE= (4u  << OPCODE_SHIFT |  838u     ),
 622     VCMPGTSB_OPCODE= (4u  << OPCODE_SHIFT |  774u     ),
 623     VCMPGTSW_OPCODE= (4u  << OPCODE_SHIFT |  902u     ),
 624     VCMPGTUB_OPCODE= (4u  << OPCODE_SHIFT |  518u     ),
 625     VCMPGTUH_OPCODE= (4u  << OPCODE_SHIFT |  582u     ),
 626     VCMPGTUW_OPCODE= (4u  << OPCODE_SHIFT |  646u     ),
 627 
 628     VAND_OPCODE    = (4u  << OPCODE_SHIFT | 1028u     ),
 629     VANDC_OPCODE   = (4u  << OPCODE_SHIFT | 1092u     ),
 630     VNOR_OPCODE    = (4u  << OPCODE_SHIFT | 1284u     ),
 631     VOR_OPCODE     = (4u  << OPCODE_SHIFT | 1156u     ),
 632     VXOR_OPCODE    = (4u  << OPCODE_SHIFT | 1220u     ),
 633     VRLD_OPCODE    = (4u  << OPCODE_SHIFT |  196u     ),
 634     VRLB_OPCODE    = (4u  << OPCODE_SHIFT |    4u     ),
 635     VRLW_OPCODE    = (4u  << OPCODE_SHIFT |  132u     ),
 636     VRLH_OPCODE    = (4u  << OPCODE_SHIFT |   68u     ),
 637     VSLB_OPCODE    = (4u  << OPCODE_SHIFT |  260u     ),
 638     VSKW_OPCODE    = (4u  << OPCODE_SHIFT |  388u     ),
 639     VSLH_OPCODE    = (4u  << OPCODE_SHIFT |  324u     ),
 640     VSRB_OPCODE    = (4u  << OPCODE_SHIFT |  516u     ),
 641     VSRW_OPCODE    = (4u  << OPCODE_SHIFT |  644u     ),
 642     VSRH_OPCODE    = (4u  << OPCODE_SHIFT |  580u     ),
 643     VSRAB_OPCODE   = (4u  << OPCODE_SHIFT |  772u     ),
 644     VSRAW_OPCODE   = (4u  << OPCODE_SHIFT |  900u     ),
 645     VSRAH_OPCODE   = (4u  << OPCODE_SHIFT |  836u     ),
 646 
 647     // Vector Floating-Point
 648     // not implemented yet
 649 
 650     // Vector Status and Control
 651     MTVSCR_OPCODE  = (4u  << OPCODE_SHIFT | 1604u     ),
 652     MFVSCR_OPCODE  = (4u  << OPCODE_SHIFT | 1540u     ),
 653 
 654     // AES (introduced with Power 8)
 655     VCIPHER_OPCODE      = (4u  << OPCODE_SHIFT | 1288u),
 656     VCIPHERLAST_OPCODE  = (4u  << OPCODE_SHIFT | 1289u),
 657     VNCIPHER_OPCODE     = (4u  << OPCODE_SHIFT | 1352u),
 658     VNCIPHERLAST_OPCODE = (4u  << OPCODE_SHIFT | 1353u),
 659     VSBOX_OPCODE        = (4u  << OPCODE_SHIFT | 1480u),
 660 
 661     // SHA (introduced with Power 8)
 662     VSHASIGMAD_OPCODE   = (4u  << OPCODE_SHIFT | 1730u),
 663     VSHASIGMAW_OPCODE   = (4u  << OPCODE_SHIFT | 1666u),
 664 
 665     // Vector Binary Polynomial Multiplication (introduced with Power 8)
 666     VPMSUMB_OPCODE      = (4u  << OPCODE_SHIFT | 1032u),
 667     VPMSUMD_OPCODE      = (4u  << OPCODE_SHIFT | 1224u),
 668     VPMSUMH_OPCODE      = (4u  << OPCODE_SHIFT | 1096u),
 669     VPMSUMW_OPCODE      = (4u  << OPCODE_SHIFT | 1160u),
 670 
 671     // Vector Permute and Xor (introduced with Power 8)
 672     VPERMXOR_OPCODE     = (4u  << OPCODE_SHIFT |   45u),
 673 
 674     // Transactional Memory instructions (introduced with Power 8)
 675     TBEGIN_OPCODE    = (31u << OPCODE_SHIFT |  654u << 1),
 676     TEND_OPCODE      = (31u << OPCODE_SHIFT |  686u << 1),
 677     TABORT_OPCODE    = (31u << OPCODE_SHIFT |  910u << 1),
 678     TABORTWC_OPCODE  = (31u << OPCODE_SHIFT |  782u << 1),
 679     TABORTWCI_OPCODE = (31u << OPCODE_SHIFT |  846u << 1),
 680     TABORTDC_OPCODE  = (31u << OPCODE_SHIFT |  814u << 1),
 681     TABORTDCI_OPCODE = (31u << OPCODE_SHIFT |  878u << 1),
 682     TSR_OPCODE       = (31u << OPCODE_SHIFT |  750u << 1),
 683     TCHECK_OPCODE    = (31u << OPCODE_SHIFT |  718u << 1),
 684 
 685     // Icache and dcache related instructions
 686     DCBA_OPCODE    = (31u << OPCODE_SHIFT |  758u << 1),
 687     DCBZ_OPCODE    = (31u << OPCODE_SHIFT | 1014u << 1),
 688     DCBST_OPCODE   = (31u << OPCODE_SHIFT |   54u << 1),
 689     DCBF_OPCODE    = (31u << OPCODE_SHIFT |   86u << 1),
 690 
 691     DCBT_OPCODE    = (31u << OPCODE_SHIFT |  278u << 1),
 692     DCBTST_OPCODE  = (31u << OPCODE_SHIFT |  246u << 1),
 693     ICBI_OPCODE    = (31u << OPCODE_SHIFT |  982u << 1),
 694 
 695     // Instruction synchronization
 696     ISYNC_OPCODE   = (19u << OPCODE_SHIFT |  150u << 1),
 697     // Memory barriers
 698     SYNC_OPCODE    = (31u << OPCODE_SHIFT |  598u << 1),
 699     EIEIO_OPCODE   = (31u << OPCODE_SHIFT |  854u << 1),
 700 
 701     // Wait instructions for polling.
 702     WAIT_OPCODE    = (31u << OPCODE_SHIFT |   62u << 1),
 703 
 704     // Trap instructions
 705     TDI_OPCODE     = (2u  << OPCODE_SHIFT),
 706     TWI_OPCODE     = (3u  << OPCODE_SHIFT),
 707     TD_OPCODE      = (31u << OPCODE_SHIFT |   68u << 1),
 708     TW_OPCODE      = (31u << OPCODE_SHIFT |    4u << 1),
 709 
 710     // Atomics.
 711     LBARX_OPCODE   = (31u << OPCODE_SHIFT |   52u << 1),
 712     LHARX_OPCODE   = (31u << OPCODE_SHIFT |  116u << 1),
 713     LWARX_OPCODE   = (31u << OPCODE_SHIFT |   20u << 1),
 714     LDARX_OPCODE   = (31u << OPCODE_SHIFT |   84u << 1),
 715     LQARX_OPCODE   = (31u << OPCODE_SHIFT |  276u << 1),
 716     STBCX_OPCODE   = (31u << OPCODE_SHIFT |  694u << 1),
 717     STHCX_OPCODE   = (31u << OPCODE_SHIFT |  726u << 1),
 718     STWCX_OPCODE   = (31u << OPCODE_SHIFT |  150u << 1),
 719     STDCX_OPCODE   = (31u << OPCODE_SHIFT |  214u << 1),
 720     STQCX_OPCODE   = (31u << OPCODE_SHIFT |  182u << 1)
 721 
 722   };
 723 
 724   // Trap instructions TO bits
 725   enum trap_to_bits {
 726     // single bits
 727     traptoLessThanSigned      = 1 << 4, // 0, left end
 728     traptoGreaterThanSigned   = 1 << 3,
 729     traptoEqual               = 1 << 2,
 730     traptoLessThanUnsigned    = 1 << 1,
 731     traptoGreaterThanUnsigned = 1 << 0, // 4, right end
 732 
 733     // compound ones
 734     traptoUnconditional       = (traptoLessThanSigned |
 735                                  traptoGreaterThanSigned |
 736                                  traptoEqual |
 737                                  traptoLessThanUnsigned |
 738                                  traptoGreaterThanUnsigned)
 739   };
 740 
 741   // Branch hints BH field
 742   enum branch_hint_bh {
 743     // bclr cases:
 744     bhintbhBCLRisReturn            = 0,
 745     bhintbhBCLRisNotReturnButSame  = 1,
 746     bhintbhBCLRisNotPredictable    = 3,
 747 
 748     // bcctr cases:
 749     bhintbhBCCTRisNotReturnButSame = 0,
 750     bhintbhBCCTRisNotPredictable   = 3
 751   };
 752 
 753   // Branch prediction hints AT field
 754   enum branch_hint_at {
 755     bhintatNoHint     = 0,  // at=00
 756     bhintatIsNotTaken = 2,  // at=10
 757     bhintatIsTaken    = 3   // at=11
 758   };
 759 
 760   // Branch prediction hints
 761   enum branch_hint_concept {
 762     // Use the same encoding as branch_hint_at to simply code.
 763     bhintNoHint       = bhintatNoHint,
 764     bhintIsNotTaken   = bhintatIsNotTaken,
 765     bhintIsTaken      = bhintatIsTaken
 766   };
 767 
 768   // Used in BO field of branch instruction.
 769   enum branch_condition {
 770     bcondCRbiIs0      =  4, // bo=001at
 771     bcondCRbiIs1      = 12, // bo=011at
 772     bcondAlways       = 20  // bo=10100
 773   };
 774 
 775   // Branch condition with combined prediction hints.
 776   enum branch_condition_with_hint {
 777     bcondCRbiIs0_bhintNoHint     = bcondCRbiIs0 | bhintatNoHint,
 778     bcondCRbiIs0_bhintIsNotTaken = bcondCRbiIs0 | bhintatIsNotTaken,
 779     bcondCRbiIs0_bhintIsTaken    = bcondCRbiIs0 | bhintatIsTaken,
 780     bcondCRbiIs1_bhintNoHint     = bcondCRbiIs1 | bhintatNoHint,
 781     bcondCRbiIs1_bhintIsNotTaken = bcondCRbiIs1 | bhintatIsNotTaken,
 782     bcondCRbiIs1_bhintIsTaken    = bcondCRbiIs1 | bhintatIsTaken,
 783   };
 784 
 785   // Elemental Memory Barriers (>=Power 8)
 786   enum Elemental_Membar_mask_bits {
 787     StoreStore = 1 << 0,
 788     StoreLoad  = 1 << 1,
 789     LoadStore  = 1 << 2,
 790     LoadLoad   = 1 << 3
 791   };
 792 
 793   // Branch prediction hints.
 794   inline static int add_bhint_to_boint(const int bhint, const int boint) {
 795     switch (boint) {
 796       case bcondCRbiIs0:
 797       case bcondCRbiIs1:
 798         // branch_hint and branch_hint_at have same encodings
 799         assert(   (int)bhintNoHint     == (int)bhintatNoHint
 800                && (int)bhintIsNotTaken == (int)bhintatIsNotTaken
 801                && (int)bhintIsTaken    == (int)bhintatIsTaken,
 802                "wrong encodings");
 803         assert((bhint & 0x03) == bhint, "wrong encodings");
 804         return (boint & ~0x03) | bhint;
 805       case bcondAlways:
 806         // no branch_hint
 807         return boint;
 808       default:
 809         ShouldNotReachHere();
 810         return 0;
 811     }
 812   }
 813 
 814   // Extract bcond from boint.
 815   inline static int inv_boint_bcond(const int boint) {
 816     int r_bcond = boint & ~0x03;
 817     assert(r_bcond == bcondCRbiIs0 ||
 818            r_bcond == bcondCRbiIs1 ||
 819            r_bcond == bcondAlways,
 820            "bad branch condition");
 821     return r_bcond;
 822   }
 823 
 824   // Extract bhint from boint.
 825   inline static int inv_boint_bhint(const int boint) {
 826     int r_bhint = boint & 0x03;
 827     assert(r_bhint == bhintatNoHint ||
 828            r_bhint == bhintatIsNotTaken ||
 829            r_bhint == bhintatIsTaken,
 830            "bad branch hint");
 831     return r_bhint;
 832   }
 833 
 834   // Calculate opposite of given bcond.
 835   inline static int opposite_bcond(const int bcond) {
 836     switch (bcond) {
 837       case bcondCRbiIs0:
 838         return bcondCRbiIs1;
 839       case bcondCRbiIs1:
 840         return bcondCRbiIs0;
 841       default:
 842         ShouldNotReachHere();
 843         return 0;
 844     }
 845   }
 846 
 847   // Calculate opposite of given bhint.
 848   inline static int opposite_bhint(const int bhint) {
 849     switch (bhint) {
 850       case bhintatNoHint:
 851         return bhintatNoHint;
 852       case bhintatIsNotTaken:
 853         return bhintatIsTaken;
 854       case bhintatIsTaken:
 855         return bhintatIsNotTaken;
 856       default:
 857         ShouldNotReachHere();
 858         return 0;
 859     }
 860   }
 861 
 862   // PPC branch instructions
 863   enum ppcops {
 864     b_op    = 18,
 865     bc_op   = 16,
 866     bcr_op  = 19
 867   };
 868 
 869   enum Condition {
 870     negative         = 0,
 871     less             = 0,
 872     positive         = 1,
 873     greater          = 1,
 874     zero             = 2,
 875     equal            = 2,
 876     summary_overflow = 3,
 877   };
 878 
 879  public:
 880   // Helper functions for groups of instructions
 881 
 882   enum Predict { pt = 1, pn = 0 }; // pt = predict taken
 883 
 884   // Instruction must start at passed address.
 885   static int instr_len(unsigned char *instr) { return BytesPerInstWord; }
 886 
 887   // longest instructions
 888   static int instr_maxlen() { return BytesPerInstWord; }
 889 
 890   // Test if x is within signed immediate range for nbits.
 891   static bool is_simm(int x, unsigned int nbits) {
 892     assert(0 < nbits && nbits < 32, "out of bounds");
 893     const int   min      = -(((int)1) << nbits-1);
 894     const int   maxplus1 =  (((int)1) << nbits-1);
 895     return min <= x && x < maxplus1;
 896   }
 897 
 898   static bool is_simm(jlong x, unsigned int nbits) {
 899     assert(0 < nbits && nbits < 64, "out of bounds");
 900     const jlong min      = -(((jlong)1) << nbits-1);
 901     const jlong maxplus1 =  (((jlong)1) << nbits-1);
 902     return min <= x && x < maxplus1;
 903   }
 904 
 905   // Test if x is within unsigned immediate range for nbits.
 906   static bool is_uimm(int x, unsigned int nbits) {
 907     assert(0 < nbits && nbits < 32, "out of bounds");
 908     const unsigned int maxplus1 = (((unsigned int)1) << nbits);
 909     return (unsigned int)x < maxplus1;
 910   }
 911 
 912   static bool is_uimm(jlong x, unsigned int nbits) {
 913     assert(0 < nbits && nbits < 64, "out of bounds");
 914     const julong maxplus1 = (((julong)1) << nbits);
 915     return (julong)x < maxplus1;
 916   }
 917 
 918  protected:
 919   // helpers
 920 
 921   // X is supposed to fit in a field "nbits" wide
 922   // and be sign-extended. Check the range.
 923   static void assert_signed_range(intptr_t x, int nbits) {
 924     assert(nbits == 32 || (-(1 << nbits-1) <= x && x < (1 << nbits-1)),
 925            "value out of range");
 926   }
 927 
 928   static void assert_signed_word_disp_range(intptr_t x, int nbits) {
 929     assert((x & 3) == 0, "not word aligned");
 930     assert_signed_range(x, nbits + 2);
 931   }
 932 
 933   static void assert_unsigned_const(int x, int nbits) {
 934     assert(juint(x) < juint(1 << nbits), "unsigned constant out of range");
 935   }
 936 
 937   static int fmask(juint hi_bit, juint lo_bit) {
 938     assert(hi_bit >= lo_bit && hi_bit < 32, "bad bits");
 939     return (1 << ( hi_bit-lo_bit + 1 )) - 1;
 940   }
 941 
 942   // inverse of u_field
 943   static int inv_u_field(int x, int hi_bit, int lo_bit) {
 944     juint r = juint(x) >> lo_bit;
 945     r &= fmask(hi_bit, lo_bit);
 946     return int(r);
 947   }
 948 
 949   // signed version: extract from field and sign-extend
 950   static int inv_s_field_ppc(int x, int hi_bit, int lo_bit) {
 951     x = x << (31-hi_bit);
 952     x = x >> (31-hi_bit+lo_bit);
 953     return x;
 954   }
 955 
 956   static int u_field(int x, int hi_bit, int lo_bit) {
 957     assert((x & ~fmask(hi_bit, lo_bit)) == 0, "value out of range");
 958     int r = x << lo_bit;
 959     assert(inv_u_field(r, hi_bit, lo_bit) == x, "just checking");
 960     return r;
 961   }
 962 
 963   // Same as u_field for signed values
 964   static int s_field(int x, int hi_bit, int lo_bit) {
 965     int nbits = hi_bit - lo_bit + 1;
 966     assert(nbits == 32 || (-(1 << nbits-1) <= x && x < (1 << nbits-1)),
 967       "value out of range");
 968     x &= fmask(hi_bit, lo_bit);
 969     int r = x << lo_bit;
 970     return r;
 971   }
 972 
 973   // inv_op for ppc instructions
 974   static int inv_op_ppc(int x) { return inv_u_field(x, 31, 26); }
 975 
 976   // Determine target address from li, bd field of branch instruction.
 977   static intptr_t inv_li_field(int x) {
 978     intptr_t r = inv_s_field_ppc(x, 25, 2);
 979     r = (r << 2);
 980     return r;
 981   }
 982   static intptr_t inv_bd_field(int x, intptr_t pos) {
 983     intptr_t r = inv_s_field_ppc(x, 15, 2);
 984     r = (r << 2) + pos;
 985     return r;
 986   }
 987 
 988   #define inv_opp_u_field(x, hi_bit, lo_bit) inv_u_field(x, 31-(lo_bit), 31-(hi_bit))
 989   #define inv_opp_s_field(x, hi_bit, lo_bit) inv_s_field_ppc(x, 31-(lo_bit), 31-(hi_bit))
 990   // Extract instruction fields from instruction words.
 991  public:
 992   static int inv_ra_field(int x)  { return inv_opp_u_field(x, 15, 11); }
 993   static int inv_rb_field(int x)  { return inv_opp_u_field(x, 20, 16); }
 994   static int inv_rt_field(int x)  { return inv_opp_u_field(x, 10,  6); }
 995   static int inv_rta_field(int x) { return inv_opp_u_field(x, 15, 11); }
 996   static int inv_rs_field(int x)  { return inv_opp_u_field(x, 10,  6); }
 997   // Ds uses opp_s_field(x, 31, 16), but lowest 2 bits must be 0.
 998   // Inv_ds_field uses range (x, 29, 16) but shifts by 2 to ensure that lowest bits are 0.
 999   static int inv_ds_field(int x)  { return inv_opp_s_field(x, 29, 16) << 2; }
1000   static int inv_d1_field(int x)  { return inv_opp_s_field(x, 31, 16); }
1001   static int inv_si_field(int x)  { return inv_opp_s_field(x, 31, 16); }
1002   static int inv_to_field(int x)  { return inv_opp_u_field(x, 10, 6);  }
1003   static int inv_lk_field(int x)  { return inv_opp_u_field(x, 31, 31); }
1004   static int inv_bo_field(int x)  { return inv_opp_u_field(x, 10,  6); }
1005   static int inv_bi_field(int x)  { return inv_opp_u_field(x, 15, 11); }
1006 
1007   #define opp_u_field(x, hi_bit, lo_bit) u_field(x, 31-(lo_bit), 31-(hi_bit))
1008   #define opp_s_field(x, hi_bit, lo_bit) s_field(x, 31-(lo_bit), 31-(hi_bit))
1009 
1010   // instruction fields
1011   static int aa(       int         x)  { return  opp_u_field(x,             30, 30); }
1012   static int ba(       int         x)  { return  opp_u_field(x,             15, 11); }
1013   static int bb(       int         x)  { return  opp_u_field(x,             20, 16); }
1014   static int bc(       int         x)  { return  opp_u_field(x,             25, 21); }
1015   static int bd(       int         x)  { return  opp_s_field(x,             29, 16); }
1016   static int bf( ConditionRegister cr) { return  bf(cr->encoding()); }
1017   static int bf(       int         x)  { return  opp_u_field(x,              8,  6); }
1018   static int bfa(ConditionRegister cr) { return  bfa(cr->encoding()); }
1019   static int bfa(      int         x)  { return  opp_u_field(x,             13, 11); }
1020   static int bh(       int         x)  { return  opp_u_field(x,             20, 19); }
1021   static int bi(       int         x)  { return  opp_u_field(x,             15, 11); }
1022   static int bi0(ConditionRegister cr, Condition c) { return (cr->encoding() << 2) | c; }
1023   static int bo(       int         x)  { return  opp_u_field(x,             10,  6); }
1024   static int bt(       int         x)  { return  opp_u_field(x,             10,  6); }
1025   static int d1(       int         x)  { return  opp_s_field(x,             31, 16); }
1026   static int ds(       int         x)  { assert((x & 0x3) == 0, "unaligned offset"); return opp_s_field(x, 31, 16); }
1027   static int eh(       int         x)  { return  opp_u_field(x,             31, 31); }
1028   static int flm(      int         x)  { return  opp_u_field(x,             14,  7); }
1029   static int fra(    FloatRegister r)  { return  fra(r->encoding());}
1030   static int frb(    FloatRegister r)  { return  frb(r->encoding());}
1031   static int frc(    FloatRegister r)  { return  frc(r->encoding());}
1032   static int frs(    FloatRegister r)  { return  frs(r->encoding());}
1033   static int frt(    FloatRegister r)  { return  frt(r->encoding());}
1034   static int fra(      int         x)  { return  opp_u_field(x,             15, 11); }
1035   static int frb(      int         x)  { return  opp_u_field(x,             20, 16); }
1036   static int frc(      int         x)  { return  opp_u_field(x,             25, 21); }
1037   static int frs(      int         x)  { return  opp_u_field(x,             10,  6); }
1038   static int frt(      int         x)  { return  opp_u_field(x,             10,  6); }
1039   static int fxm(      int         x)  { return  opp_u_field(x,             19, 12); }
1040   static int l10(      int         x)  { return  opp_u_field(x,             10, 10); }
1041   static int l15(      int         x)  { return  opp_u_field(x,             15, 15); }
1042   static int l910(     int         x)  { return  opp_u_field(x,             10,  9); }
1043   static int e1215(    int         x)  { return  opp_u_field(x,             15, 12); }
1044   static int lev(      int         x)  { return  opp_u_field(x,             26, 20); }
1045   static int li(       int         x)  { return  opp_s_field(x,             29,  6); }
1046   static int lk(       int         x)  { return  opp_u_field(x,             31, 31); }
1047   static int mb2125(   int         x)  { return  opp_u_field(x,             25, 21); }
1048   static int me2630(   int         x)  { return  opp_u_field(x,             30, 26); }
1049   static int mb2126(   int         x)  { return  opp_u_field(((x & 0x1f) << 1) | ((x & 0x20) >> 5), 26, 21); }
1050   static int me2126(   int         x)  { return  mb2126(x); }
1051   static int nb(       int         x)  { return  opp_u_field(x,             20, 16); }
1052   //static int opcd(   int         x)  { return  opp_u_field(x,              5,  0); } // is contained in our opcodes
1053   static int oe(       int         x)  { return  opp_u_field(x,             21, 21); }
1054   static int ra(       Register    r)  { return  ra(r->encoding()); }
1055   static int ra(       int         x)  { return  opp_u_field(x,             15, 11); }
1056   static int rb(       Register    r)  { return  rb(r->encoding()); }
1057   static int rb(       int         x)  { return  opp_u_field(x,             20, 16); }
1058   static int rc(       int         x)  { return  opp_u_field(x,             31, 31); }
1059   static int rs(       Register    r)  { return  rs(r->encoding()); }
1060   static int rs(       int         x)  { return  opp_u_field(x,             10,  6); }
1061   // we don't want to use R0 in memory accesses, because it has value `0' then
1062   static int ra0mem(   Register    r)  { assert(r != R0, "cannot use register R0 in memory access"); return ra(r); }
1063   static int ra0mem(   int         x)  { assert(x != 0,  "cannot use register 0 in memory access");  return ra(x); }
1064 
1065   // register r is target
1066   static int rt(       Register    r)  { return rs(r); }
1067   static int rt(       int         x)  { return rs(x); }
1068   static int rta(      Register    r)  { return ra(r); }
1069   static int rta0mem(  Register    r)  { rta(r); return ra0mem(r); }
1070 
1071   static int sh1620(   int         x)  { return  opp_u_field(x,             20, 16); }
1072   static int sh30(     int         x)  { return  opp_u_field(x,             30, 30); }
1073   static int sh162030( int         x)  { return  sh1620(x & 0x1f) | sh30((x & 0x20) >> 5); }
1074   static int si(       int         x)  { return  opp_s_field(x,             31, 16); }
1075   static int spr(      int         x)  { return  opp_u_field(x,             20, 11); }
1076   static int sr(       int         x)  { return  opp_u_field(x,             15, 12); }
1077   static int tbr(      int         x)  { return  opp_u_field(x,             20, 11); }
1078   static int th(       int         x)  { return  opp_u_field(x,             10,  7); }
1079   static int thct(     int         x)  { assert((x&8) == 0, "must be valid cache specification");  return th(x); }
1080   static int thds(     int         x)  { assert((x&8) == 8, "must be valid stream specification"); return th(x); }
1081   static int to(       int         x)  { return  opp_u_field(x,             10,  6); }
1082   static int u(        int         x)  { return  opp_u_field(x,             19, 16); }
1083   static int ui(       int         x)  { return  opp_u_field(x,             31, 16); }
1084 
1085   // Support vector instructions for >= Power6.
1086   static int vra(      int         x)  { return  opp_u_field(x,             15, 11); }
1087   static int vrb(      int         x)  { return  opp_u_field(x,             20, 16); }
1088   static int vrc(      int         x)  { return  opp_u_field(x,             25, 21); }
1089   static int vrs(      int         x)  { return  opp_u_field(x,             10,  6); }
1090   static int vrt(      int         x)  { return  opp_u_field(x,             10,  6); }
1091 
1092   static int vra(   VectorRegister r)  { return  vra(r->encoding());}
1093   static int vrb(   VectorRegister r)  { return  vrb(r->encoding());}
1094   static int vrc(   VectorRegister r)  { return  vrc(r->encoding());}
1095   static int vrs(   VectorRegister r)  { return  vrs(r->encoding());}
1096   static int vrt(   VectorRegister r)  { return  vrt(r->encoding());}
1097 
1098   // Support Vector-Scalar (VSX) instructions.
1099   static int vsra(      int         x)  { return  opp_u_field(x,            15, 11); }
1100   static int vsrb(      int         x)  { return  opp_u_field(x,            20, 16); }
1101   static int vsrc(      int         x)  { return  opp_u_field(x,            25, 21); }
1102   static int vsrs(      int         x)  { return  opp_u_field(x,            10,  6); }
1103   static int vsrt(      int         x)  { return  opp_u_field(x,            10,  6); }
1104 
1105   static int vsra(   VectorSRegister r)  { return  vsra(r->encoding());}
1106   static int vsrb(   VectorSRegister r)  { return  vsrb(r->encoding());}
1107   static int vsrc(   VectorSRegister r)  { return  vsrc(r->encoding());}
1108   static int vsrs(   VectorSRegister r)  { return  vsrs(r->encoding());}
1109   static int vsrt(   VectorSRegister r)  { return  vsrt(r->encoding());}
1110 
1111   static int vsplt_uim( int        x)  { return  opp_u_field(x,             15, 12); } // for vsplt* instructions
1112   static int vsplti_sim(int        x)  { return  opp_u_field(x,             15, 11); } // for vsplti* instructions
1113   static int vsldoi_shb(int        x)  { return  opp_u_field(x,             25, 22); } // for vsldoi instruction
1114   static int vcmp_rc(   int        x)  { return  opp_u_field(x,             21, 21); } // for vcmp* instructions
1115 
1116   //static int xo1(     int        x)  { return  opp_u_field(x,             29, 21); }// is contained in our opcodes
1117   //static int xo2(     int        x)  { return  opp_u_field(x,             30, 21); }// is contained in our opcodes
1118   //static int xo3(     int        x)  { return  opp_u_field(x,             30, 22); }// is contained in our opcodes
1119   //static int xo4(     int        x)  { return  opp_u_field(x,             30, 26); }// is contained in our opcodes
1120   //static int xo5(     int        x)  { return  opp_u_field(x,             29, 27); }// is contained in our opcodes
1121   //static int xo6(     int        x)  { return  opp_u_field(x,             30, 27); }// is contained in our opcodes
1122   //static int xo7(     int        x)  { return  opp_u_field(x,             31, 30); }// is contained in our opcodes
1123 
1124  protected:
1125   // Compute relative address for branch.
1126   static intptr_t disp(intptr_t x, intptr_t off) {
1127     int xx = x - off;
1128     xx = xx >> 2;
1129     return xx;
1130   }
1131 
1132  public:
1133   // signed immediate, in low bits, nbits long
1134   static int simm(int x, int nbits) {
1135     assert_signed_range(x, nbits);
1136     return x & ((1 << nbits) - 1);
1137   }
1138 
1139   // unsigned immediate, in low bits, nbits long
1140   static int uimm(int x, int nbits) {
1141     assert_unsigned_const(x, nbits);
1142     return x & ((1 << nbits) - 1);
1143   }
1144 
1145   static void set_imm(int* instr, short s) {
1146     // imm is always in the lower 16 bits of the instruction,
1147     // so this is endian-neutral. Same for the get_imm below.
1148     uint32_t w = *(uint32_t *)instr;
1149     *instr = (int)((w & ~0x0000FFFF) | (s & 0x0000FFFF));
1150   }
1151 
1152   static int get_imm(address a, int instruction_number) {
1153     return (short)((int *)a)[instruction_number];
1154   }
1155 
1156   static inline int hi16_signed(  int x) { return (int)(int16_t)(x >> 16); }
1157   static inline int lo16_unsigned(int x) { return x & 0xffff; }
1158 
1159  protected:
1160 
1161   // Extract the top 32 bits in a 64 bit word.
1162   static int32_t hi32(int64_t x) {
1163     int32_t r = int32_t((uint64_t)x >> 32);
1164     return r;
1165   }
1166 
1167  public:
1168 
1169   static inline unsigned int align_addr(unsigned int addr, unsigned int a) {
1170     return ((addr + (a - 1)) & ~(a - 1));
1171   }
1172 
1173   static inline bool is_aligned(unsigned int addr, unsigned int a) {
1174     return (0 == addr % a);
1175   }
1176 
1177   void flush() {
1178     AbstractAssembler::flush();
1179   }
1180 
1181   inline void emit_int32(int);  // shadows AbstractAssembler::emit_int32
1182   inline void emit_data(int);
1183   inline void emit_data(int, RelocationHolder const&);
1184   inline void emit_data(int, relocInfo::relocType rtype);
1185 
1186   // Emit an address.
1187   inline address emit_addr(const address addr = NULL);
1188 
1189 #if !defined(ABI_ELFv2)
1190   // Emit a function descriptor with the specified entry point, TOC,
1191   // and ENV. If the entry point is NULL, the descriptor will point
1192   // just past the descriptor.
1193   // Use values from friend functions as defaults.
1194   inline address emit_fd(address entry = NULL,
1195                          address toc = (address) FunctionDescriptor::friend_toc,
1196                          address env = (address) FunctionDescriptor::friend_env);
1197 #endif
1198 
1199   /////////////////////////////////////////////////////////////////////////////////////
1200   // PPC instructions
1201   /////////////////////////////////////////////////////////////////////////////////////
1202 
1203   // Memory instructions use r0 as hard coded 0, e.g. to simulate loading
1204   // immediates. The normal instruction encoders enforce that r0 is not
1205   // passed to them. Use either extended mnemonics encoders or the special ra0
1206   // versions.
1207 
1208   // Issue an illegal instruction.
1209   inline void illtrap();
1210   static inline bool is_illtrap(int x);
1211 
1212   // PPC 1, section 3.3.8, Fixed-Point Arithmetic Instructions
1213   inline void addi( Register d, Register a, int si16);
1214   inline void addis(Register d, Register a, int si16);
1215  private:
1216   inline void addi_r0ok( Register d, Register a, int si16);
1217   inline void addis_r0ok(Register d, Register a, int si16);
1218  public:
1219   inline void addic_( Register d, Register a, int si16);
1220   inline void subfic( Register d, Register a, int si16);
1221   inline void add(    Register d, Register a, Register b);
1222   inline void add_(   Register d, Register a, Register b);
1223   inline void subf(   Register d, Register a, Register b);  // d = b - a    "Sub_from", as in ppc spec.
1224   inline void sub(    Register d, Register a, Register b);  // d = a - b    Swap operands of subf for readability.
1225   inline void subf_(  Register d, Register a, Register b);
1226   inline void addc(   Register d, Register a, Register b);
1227   inline void addc_(  Register d, Register a, Register b);
1228   inline void subfc(  Register d, Register a, Register b);
1229   inline void subfc_( Register d, Register a, Register b);
1230   inline void adde(   Register d, Register a, Register b);
1231   inline void adde_(  Register d, Register a, Register b);
1232   inline void subfe(  Register d, Register a, Register b);
1233   inline void subfe_( Register d, Register a, Register b);
1234   inline void addme(  Register d, Register a);
1235   inline void addme_( Register d, Register a);
1236   inline void subfme( Register d, Register a);
1237   inline void subfme_(Register d, Register a);
1238   inline void addze(  Register d, Register a);
1239   inline void addze_( Register d, Register a);
1240   inline void subfze( Register d, Register a);
1241   inline void subfze_(Register d, Register a);
1242   inline void neg(    Register d, Register a);
1243   inline void neg_(   Register d, Register a);
1244   inline void mulli(  Register d, Register a, int si16);
1245   inline void mulld(  Register d, Register a, Register b);
1246   inline void mulld_( Register d, Register a, Register b);
1247   inline void mullw(  Register d, Register a, Register b);
1248   inline void mullw_( Register d, Register a, Register b);
1249   inline void mulhw(  Register d, Register a, Register b);
1250   inline void mulhw_( Register d, Register a, Register b);
1251   inline void mulhwu( Register d, Register a, Register b);
1252   inline void mulhwu_(Register d, Register a, Register b);
1253   inline void mulhd(  Register d, Register a, Register b);
1254   inline void mulhd_( Register d, Register a, Register b);
1255   inline void mulhdu( Register d, Register a, Register b);
1256   inline void mulhdu_(Register d, Register a, Register b);
1257   inline void divd(   Register d, Register a, Register b);
1258   inline void divd_(  Register d, Register a, Register b);
1259   inline void divw(   Register d, Register a, Register b);
1260   inline void divw_(  Register d, Register a, Register b);
1261 
1262   // Fixed-Point Arithmetic Instructions with Overflow detection
1263   inline void addo(    Register d, Register a, Register b);
1264   inline void addo_(   Register d, Register a, Register b);
1265   inline void subfo(   Register d, Register a, Register b);
1266   inline void subfo_(  Register d, Register a, Register b);
1267   inline void addco(   Register d, Register a, Register b);
1268   inline void addco_(  Register d, Register a, Register b);
1269   inline void subfco(  Register d, Register a, Register b);
1270   inline void subfco_( Register d, Register a, Register b);
1271   inline void addeo(   Register d, Register a, Register b);
1272   inline void addeo_(  Register d, Register a, Register b);
1273   inline void subfeo(  Register d, Register a, Register b);
1274   inline void subfeo_( Register d, Register a, Register b);
1275   inline void addmeo(  Register d, Register a);
1276   inline void addmeo_( Register d, Register a);
1277   inline void subfmeo( Register d, Register a);
1278   inline void subfmeo_(Register d, Register a);
1279   inline void addzeo(  Register d, Register a);
1280   inline void addzeo_( Register d, Register a);
1281   inline void subfzeo( Register d, Register a);
1282   inline void subfzeo_(Register d, Register a);
1283   inline void nego(    Register d, Register a);
1284   inline void nego_(   Register d, Register a);
1285   inline void mulldo(  Register d, Register a, Register b);
1286   inline void mulldo_( Register d, Register a, Register b);
1287   inline void mullwo(  Register d, Register a, Register b);
1288   inline void mullwo_( Register d, Register a, Register b);
1289   inline void divdo(   Register d, Register a, Register b);
1290   inline void divdo_(  Register d, Register a, Register b);
1291   inline void divwo(   Register d, Register a, Register b);
1292   inline void divwo_(  Register d, Register a, Register b);
1293 
1294   // extended mnemonics
1295   inline void li(   Register d, int si16);
1296   inline void lis(  Register d, int si16);
1297   inline void addir(Register d, int si16, Register a);
1298 
1299   static bool is_addi(int x) {
1300      return ADDI_OPCODE == (x & ADDI_OPCODE_MASK);
1301   }
1302   static bool is_addis(int x) {
1303      return ADDIS_OPCODE == (x & ADDIS_OPCODE_MASK);
1304   }
1305   static bool is_bxx(int x) {
1306      return BXX_OPCODE == (x & BXX_OPCODE_MASK);
1307   }
1308   static bool is_b(int x) {
1309      return BXX_OPCODE == (x & BXX_OPCODE_MASK) && inv_lk_field(x) == 0;
1310   }
1311   static bool is_bl(int x) {
1312      return BXX_OPCODE == (x & BXX_OPCODE_MASK) && inv_lk_field(x) == 1;
1313   }
1314   static bool is_bcxx(int x) {
1315      return BCXX_OPCODE == (x & BCXX_OPCODE_MASK);
1316   }
1317   static bool is_bxx_or_bcxx(int x) {
1318      return is_bxx(x) || is_bcxx(x);
1319   }
1320   static bool is_bctrl(int x) {
1321      return x == 0x4e800421;
1322   }
1323   static bool is_bctr(int x) {
1324      return x == 0x4e800420;
1325   }
1326   static bool is_bclr(int x) {
1327      return BCLR_OPCODE == (x & XL_FORM_OPCODE_MASK);
1328   }
1329   static bool is_li(int x) {
1330      return is_addi(x) && inv_ra_field(x)==0;
1331   }
1332   static bool is_lis(int x) {
1333      return is_addis(x) && inv_ra_field(x)==0;
1334   }
1335   static bool is_mtctr(int x) {
1336      return MTCTR_OPCODE == (x & MTCTR_OPCODE_MASK);
1337   }
1338   static bool is_ld(int x) {
1339      return LD_OPCODE == (x & LD_OPCODE_MASK);
1340   }
1341   static bool is_std(int x) {
1342      return STD_OPCODE == (x & STD_OPCODE_MASK);
1343   }
1344   static bool is_stdu(int x) {
1345      return STDU_OPCODE == (x & STDU_OPCODE_MASK);
1346   }
1347   static bool is_stdx(int x) {
1348      return STDX_OPCODE == (x & STDX_OPCODE_MASK);
1349   }
1350   static bool is_stdux(int x) {
1351      return STDUX_OPCODE == (x & STDUX_OPCODE_MASK);
1352   }
1353   static bool is_stwx(int x) {
1354      return STWX_OPCODE == (x & STWX_OPCODE_MASK);
1355   }
1356   static bool is_stwux(int x) {
1357      return STWUX_OPCODE == (x & STWUX_OPCODE_MASK);
1358   }
1359   static bool is_stw(int x) {
1360      return STW_OPCODE == (x & STW_OPCODE_MASK);
1361   }
1362   static bool is_stwu(int x) {
1363      return STWU_OPCODE == (x & STWU_OPCODE_MASK);
1364   }
1365   static bool is_ori(int x) {
1366      return ORI_OPCODE == (x & ORI_OPCODE_MASK);
1367   };
1368   static bool is_oris(int x) {
1369      return ORIS_OPCODE == (x & ORIS_OPCODE_MASK);
1370   };
1371   static bool is_rldicr(int x) {
1372      return (RLDICR_OPCODE == (x & RLDICR_OPCODE_MASK));
1373   };
1374   static bool is_nop(int x) {
1375     return x == 0x60000000;
1376   }
1377   // endgroup opcode for Power6
1378   static bool is_endgroup(int x) {
1379     return is_ori(x) && inv_ra_field(x) == 1 && inv_rs_field(x) == 1 && inv_d1_field(x) == 0;
1380   }
1381 
1382 
1383  private:
1384   // PPC 1, section 3.3.9, Fixed-Point Compare Instructions
1385   inline void cmpi( ConditionRegister bf, int l, Register a, int si16);
1386   inline void cmp(  ConditionRegister bf, int l, Register a, Register b);
1387   inline void cmpli(ConditionRegister bf, int l, Register a, int ui16);
1388   inline void cmpl( ConditionRegister bf, int l, Register a, Register b);
1389 
1390  public:
1391   // extended mnemonics of Compare Instructions
1392   inline void cmpwi( ConditionRegister crx, Register a, int si16);
1393   inline void cmpdi( ConditionRegister crx, Register a, int si16);
1394   inline void cmpw(  ConditionRegister crx, Register a, Register b);
1395   inline void cmpd(  ConditionRegister crx, Register a, Register b);
1396   inline void cmplwi(ConditionRegister crx, Register a, int ui16);
1397   inline void cmpldi(ConditionRegister crx, Register a, int ui16);
1398   inline void cmplw( ConditionRegister crx, Register a, Register b);
1399   inline void cmpld( ConditionRegister crx, Register a, Register b);
1400 
1401   inline void isel(   Register d, Register a, Register b, int bc);
1402   // Convenient version which takes: Condition register, Condition code and invert flag. Omit b to keep old value.
1403   inline void isel(   Register d, ConditionRegister cr, Condition cc, bool inv, Register a, Register b = noreg);
1404   // Set d = 0 if (cr.cc) equals 1, otherwise b.
1405   inline void isel_0( Register d, ConditionRegister cr, Condition cc, Register b = noreg);
1406 
1407   // PPC 1, section 3.3.11, Fixed-Point Logical Instructions
1408          void andi(   Register a, Register s, long ui16);   // optimized version
1409   inline void andi_(  Register a, Register s, int ui16);
1410   inline void andis_( Register a, Register s, int ui16);
1411   inline void ori(    Register a, Register s, int ui16);
1412   inline void oris(   Register a, Register s, int ui16);
1413   inline void xori(   Register a, Register s, int ui16);
1414   inline void xoris(  Register a, Register s, int ui16);
1415   inline void andr(   Register a, Register s, Register b);  // suffixed by 'r' as 'and' is C++ keyword
1416   inline void and_(   Register a, Register s, Register b);
1417   // Turn or0(rx,rx,rx) into a nop and avoid that we accidently emit a
1418   // SMT-priority change instruction (see SMT instructions below).
1419   inline void or_unchecked(Register a, Register s, Register b);
1420   inline void orr(    Register a, Register s, Register b);  // suffixed by 'r' as 'or' is C++ keyword
1421   inline void or_(    Register a, Register s, Register b);
1422   inline void xorr(   Register a, Register s, Register b);  // suffixed by 'r' as 'xor' is C++ keyword
1423   inline void xor_(   Register a, Register s, Register b);
1424   inline void nand(   Register a, Register s, Register b);
1425   inline void nand_(  Register a, Register s, Register b);
1426   inline void nor(    Register a, Register s, Register b);
1427   inline void nor_(   Register a, Register s, Register b);
1428   inline void andc(   Register a, Register s, Register b);
1429   inline void andc_(  Register a, Register s, Register b);
1430   inline void orc(    Register a, Register s, Register b);
1431   inline void orc_(   Register a, Register s, Register b);
1432   inline void extsb(  Register a, Register s);
1433   inline void extsb_( Register a, Register s);
1434   inline void extsh(  Register a, Register s);
1435   inline void extsh_( Register a, Register s);
1436   inline void extsw(  Register a, Register s);
1437   inline void extsw_( Register a, Register s);
1438 
1439   // extended mnemonics
1440   inline void nop();
1441   // NOP for FP and BR units (different versions to allow them to be in one group)
1442   inline void fpnop0();
1443   inline void fpnop1();
1444   inline void brnop0();
1445   inline void brnop1();
1446   inline void brnop2();
1447 
1448   inline void mr(      Register d, Register s);
1449   inline void ori_opt( Register d, int ui16);
1450   inline void oris_opt(Register d, int ui16);
1451 
1452   // endgroup opcode for Power6
1453   inline void endgroup();
1454 
1455   // count instructions
1456   inline void cntlzw(  Register a, Register s);
1457   inline void cntlzw_( Register a, Register s);
1458   inline void cntlzd(  Register a, Register s);
1459   inline void cntlzd_( Register a, Register s);
1460 
1461   // PPC 1, section 3.3.12, Fixed-Point Rotate and Shift Instructions
1462   inline void sld(     Register a, Register s, Register b);
1463   inline void sld_(    Register a, Register s, Register b);
1464   inline void slw(     Register a, Register s, Register b);
1465   inline void slw_(    Register a, Register s, Register b);
1466   inline void srd(     Register a, Register s, Register b);
1467   inline void srd_(    Register a, Register s, Register b);
1468   inline void srw(     Register a, Register s, Register b);
1469   inline void srw_(    Register a, Register s, Register b);
1470   inline void srad(    Register a, Register s, Register b);
1471   inline void srad_(   Register a, Register s, Register b);
1472   inline void sraw(    Register a, Register s, Register b);
1473   inline void sraw_(   Register a, Register s, Register b);
1474   inline void sradi(   Register a, Register s, int sh6);
1475   inline void sradi_(  Register a, Register s, int sh6);
1476   inline void srawi(   Register a, Register s, int sh5);
1477   inline void srawi_(  Register a, Register s, int sh5);
1478 
1479   // extended mnemonics for Shift Instructions
1480   inline void sldi(    Register a, Register s, int sh6);
1481   inline void sldi_(   Register a, Register s, int sh6);
1482   inline void slwi(    Register a, Register s, int sh5);
1483   inline void slwi_(   Register a, Register s, int sh5);
1484   inline void srdi(    Register a, Register s, int sh6);
1485   inline void srdi_(   Register a, Register s, int sh6);
1486   inline void srwi(    Register a, Register s, int sh5);
1487   inline void srwi_(   Register a, Register s, int sh5);
1488 
1489   inline void clrrdi(  Register a, Register s, int ui6);
1490   inline void clrrdi_( Register a, Register s, int ui6);
1491   inline void clrldi(  Register a, Register s, int ui6);
1492   inline void clrldi_( Register a, Register s, int ui6);
1493   inline void clrlsldi(Register a, Register s, int clrl6, int shl6);
1494   inline void clrlsldi_(Register a, Register s, int clrl6, int shl6);
1495   inline void extrdi(  Register a, Register s, int n, int b);
1496   // testbit with condition register
1497   inline void testbitdi(ConditionRegister cr, Register a, Register s, int ui6);
1498 
1499   // rotate instructions
1500   inline void rotldi(  Register a, Register s, int n);
1501   inline void rotrdi(  Register a, Register s, int n);
1502   inline void rotlwi(  Register a, Register s, int n);
1503   inline void rotrwi(  Register a, Register s, int n);
1504 
1505   // Rotate Instructions
1506   inline void rldic(   Register a, Register s, int sh6, int mb6);
1507   inline void rldic_(  Register a, Register s, int sh6, int mb6);
1508   inline void rldicr(  Register a, Register s, int sh6, int mb6);
1509   inline void rldicr_( Register a, Register s, int sh6, int mb6);
1510   inline void rldicl(  Register a, Register s, int sh6, int mb6);
1511   inline void rldicl_( Register a, Register s, int sh6, int mb6);
1512   inline void rlwinm(  Register a, Register s, int sh5, int mb5, int me5);
1513   inline void rlwinm_( Register a, Register s, int sh5, int mb5, int me5);
1514   inline void rldimi(  Register a, Register s, int sh6, int mb6);
1515   inline void rldimi_( Register a, Register s, int sh6, int mb6);
1516   inline void rlwimi(  Register a, Register s, int sh5, int mb5, int me5);
1517   inline void insrdi(  Register a, Register s, int n,   int b);
1518   inline void insrwi(  Register a, Register s, int n,   int b);
1519 
1520   // PPC 1, section 3.3.2 Fixed-Point Load Instructions
1521   // 4 bytes
1522   inline void lwzx( Register d, Register s1, Register s2);
1523   inline void lwz(  Register d, int si16,    Register s1);
1524   inline void lwzu( Register d, int si16,    Register s1);
1525 
1526   // 4 bytes
1527   inline void lwax( Register d, Register s1, Register s2);
1528   inline void lwa(  Register d, int si16,    Register s1);
1529 
1530   // 4 bytes reversed
1531   inline void lwbrx( Register d, Register s1, Register s2);
1532 
1533   // 2 bytes
1534   inline void lhzx( Register d, Register s1, Register s2);
1535   inline void lhz(  Register d, int si16,    Register s1);
1536   inline void lhzu( Register d, int si16,    Register s1);
1537 
1538   // 2 bytes reversed
1539   inline void lhbrx( Register d, Register s1, Register s2);
1540 
1541   // 2 bytes
1542   inline void lhax( Register d, Register s1, Register s2);
1543   inline void lha(  Register d, int si16,    Register s1);
1544   inline void lhau( Register d, int si16,    Register s1);
1545 
1546   // 1 byte
1547   inline void lbzx( Register d, Register s1, Register s2);
1548   inline void lbz(  Register d, int si16,    Register s1);
1549   inline void lbzu( Register d, int si16,    Register s1);
1550 
1551   // 8 bytes
1552   inline void ldx(  Register d, Register s1, Register s2);
1553   inline void ld(   Register d, int si16,    Register s1);
1554   inline void ldu(  Register d, int si16,    Register s1);
1555 
1556   // For convenience. Load pointer into d from b+s1.
1557   inline void ld_ptr(Register d, int b, Register s1);
1558   DEBUG_ONLY(inline void ld_ptr(Register d, ByteSize b, Register s1);)
1559 
1560   //  PPC 1, section 3.3.3 Fixed-Point Store Instructions
1561   inline void stwx( Register d, Register s1, Register s2);
1562   inline void stw(  Register d, int si16,    Register s1);
1563   inline void stwu( Register d, int si16,    Register s1);
1564 
1565   inline void sthx( Register d, Register s1, Register s2);
1566   inline void sth(  Register d, int si16,    Register s1);
1567   inline void sthu( Register d, int si16,    Register s1);
1568 
1569   inline void stbx( Register d, Register s1, Register s2);
1570   inline void stb(  Register d, int si16,    Register s1);
1571   inline void stbu( Register d, int si16,    Register s1);
1572 
1573   inline void stdx( Register d, Register s1, Register s2);
1574   inline void std(  Register d, int si16,    Register s1);
1575   inline void stdu( Register d, int si16,    Register s1);
1576   inline void stdux(Register s, Register a,  Register b);
1577 
1578   inline void st_ptr(Register d, int si16,    Register s1);
1579   DEBUG_ONLY(inline void st_ptr(Register d, ByteSize b, Register s1);)
1580 
1581   // PPC 1, section 3.3.13 Move To/From System Register Instructions
1582   inline void mtlr( Register s1);
1583   inline void mflr( Register d);
1584   inline void mtctr(Register s1);
1585   inline void mfctr(Register d);
1586   inline void mtcrf(int fxm, Register s);
1587   inline void mfcr( Register d);
1588   inline void mcrf( ConditionRegister crd, ConditionRegister cra);
1589   inline void mtcr( Register s);
1590 
1591   // Special purpose registers
1592   // Exception Register
1593   inline void mtxer(Register s1);
1594   inline void mfxer(Register d);
1595   // Vector Register Save Register
1596   inline void mtvrsave(Register s1);
1597   inline void mfvrsave(Register d);
1598   // Timebase
1599   inline void mftb(Register d);
1600   // Introduced with Power 8:
1601   // Data Stream Control Register
1602   inline void mtdscr(Register s1);
1603   inline void mfdscr(Register d );
1604   // Transactional Memory Registers
1605   inline void mftfhar(Register d);
1606   inline void mftfiar(Register d);
1607   inline void mftexasr(Register d);
1608   inline void mftexasru(Register d);
1609 
1610   // TEXASR bit description
1611   enum transaction_failure_reason {
1612     // Upper half (TEXASRU):
1613     tm_failure_persistent =  7, // The failure is likely to recur on each execution.
1614     tm_disallowed         =  8, // The instruction is not permitted.
1615     tm_nesting_of         =  9, // The maximum transaction level was exceeded.
1616     tm_footprint_of       = 10, // The tracking limit for transactional storage accesses was exceeded.
1617     tm_self_induced_cf    = 11, // A self-induced conflict occurred in Suspended state.
1618     tm_non_trans_cf       = 12, // A conflict occurred with a non-transactional access by another processor.
1619     tm_trans_cf           = 13, // A conflict occurred with another transaction.
1620     tm_translation_cf     = 14, // A conflict occurred with a TLB invalidation.
1621     tm_inst_fetch_cf      = 16, // An instruction fetch was performed from a block that was previously written transactionally.
1622     tm_tabort             = 31, // Termination was caused by the execution of an abort instruction.
1623     // Lower half:
1624     tm_suspended          = 32, // Failure was recorded in Suspended state.
1625     tm_failure_summary    = 36, // Failure has been detected and recorded.
1626     tm_tfiar_exact        = 37, // Value in the TFIAR is exact.
1627     tm_rot                = 38, // Rollback-only transaction.
1628   };
1629 
1630   // PPC 1, section 2.4.1 Branch Instructions
1631   inline void b(  address a, relocInfo::relocType rt = relocInfo::none);
1632   inline void b(  Label& L);
1633   inline void bl( address a, relocInfo::relocType rt = relocInfo::none);
1634   inline void bl( Label& L);
1635   inline void bc( int boint, int biint, address a, relocInfo::relocType rt = relocInfo::none);
1636   inline void bc( int boint, int biint, Label& L);
1637   inline void bcl(int boint, int biint, address a, relocInfo::relocType rt = relocInfo::none);
1638   inline void bcl(int boint, int biint, Label& L);
1639 
1640   inline void bclr(  int boint, int biint, int bhint, relocInfo::relocType rt = relocInfo::none);
1641   inline void bclrl( int boint, int biint, int bhint, relocInfo::relocType rt = relocInfo::none);
1642   inline void bcctr( int boint, int biint, int bhint = bhintbhBCCTRisNotReturnButSame,
1643                          relocInfo::relocType rt = relocInfo::none);
1644   inline void bcctrl(int boint, int biint, int bhint = bhintbhBCLRisReturn,
1645                          relocInfo::relocType rt = relocInfo::none);
1646 
1647   // helper function for b, bcxx
1648   inline bool is_within_range_of_b(address a, address pc);
1649   inline bool is_within_range_of_bcxx(address a, address pc);
1650 
1651   // get the destination of a bxx branch (b, bl, ba, bla)
1652   static inline address  bxx_destination(address baddr);
1653   static inline address  bxx_destination(int instr, address pc);
1654   static inline intptr_t bxx_destination_offset(int instr, intptr_t bxx_pos);
1655 
1656   // extended mnemonics for branch instructions
1657   inline void blt(ConditionRegister crx, Label& L);
1658   inline void bgt(ConditionRegister crx, Label& L);
1659   inline void beq(ConditionRegister crx, Label& L);
1660   inline void bso(ConditionRegister crx, Label& L);
1661   inline void bge(ConditionRegister crx, Label& L);
1662   inline void ble(ConditionRegister crx, Label& L);
1663   inline void bne(ConditionRegister crx, Label& L);
1664   inline void bns(ConditionRegister crx, Label& L);
1665 
1666   // Branch instructions with static prediction hints.
1667   inline void blt_predict_taken(    ConditionRegister crx, Label& L);
1668   inline void bgt_predict_taken(    ConditionRegister crx, Label& L);
1669   inline void beq_predict_taken(    ConditionRegister crx, Label& L);
1670   inline void bso_predict_taken(    ConditionRegister crx, Label& L);
1671   inline void bge_predict_taken(    ConditionRegister crx, Label& L);
1672   inline void ble_predict_taken(    ConditionRegister crx, Label& L);
1673   inline void bne_predict_taken(    ConditionRegister crx, Label& L);
1674   inline void bns_predict_taken(    ConditionRegister crx, Label& L);
1675   inline void blt_predict_not_taken(ConditionRegister crx, Label& L);
1676   inline void bgt_predict_not_taken(ConditionRegister crx, Label& L);
1677   inline void beq_predict_not_taken(ConditionRegister crx, Label& L);
1678   inline void bso_predict_not_taken(ConditionRegister crx, Label& L);
1679   inline void bge_predict_not_taken(ConditionRegister crx, Label& L);
1680   inline void ble_predict_not_taken(ConditionRegister crx, Label& L);
1681   inline void bne_predict_not_taken(ConditionRegister crx, Label& L);
1682   inline void bns_predict_not_taken(ConditionRegister crx, Label& L);
1683 
1684   // for use in conjunction with testbitdi:
1685   inline void btrue( ConditionRegister crx, Label& L);
1686   inline void bfalse(ConditionRegister crx, Label& L);
1687 
1688   inline void bltl(ConditionRegister crx, Label& L);
1689   inline void bgtl(ConditionRegister crx, Label& L);
1690   inline void beql(ConditionRegister crx, Label& L);
1691   inline void bsol(ConditionRegister crx, Label& L);
1692   inline void bgel(ConditionRegister crx, Label& L);
1693   inline void blel(ConditionRegister crx, Label& L);
1694   inline void bnel(ConditionRegister crx, Label& L);
1695   inline void bnsl(ConditionRegister crx, Label& L);
1696 
1697   // extended mnemonics for Branch Instructions via LR
1698   // We use `blr' for returns.
1699   inline void blr(relocInfo::relocType rt = relocInfo::none);
1700 
1701   // extended mnemonics for Branch Instructions with CTR
1702   // bdnz means `decrement CTR and jump to L if CTR is not zero'
1703   inline void bdnz(Label& L);
1704   // Decrement and branch if result is zero.
1705   inline void bdz(Label& L);
1706   // we use `bctr[l]' for jumps/calls in function descriptor glue
1707   // code, e.g. calls to runtime functions
1708   inline void bctr( relocInfo::relocType rt = relocInfo::none);
1709   inline void bctrl(relocInfo::relocType rt = relocInfo::none);
1710   // conditional jumps/branches via CTR
1711   inline void beqctr( ConditionRegister crx, relocInfo::relocType rt = relocInfo::none);
1712   inline void beqctrl(ConditionRegister crx, relocInfo::relocType rt = relocInfo::none);
1713   inline void bnectr( ConditionRegister crx, relocInfo::relocType rt = relocInfo::none);
1714   inline void bnectrl(ConditionRegister crx, relocInfo::relocType rt = relocInfo::none);
1715 
1716   // condition register logic instructions
1717   // NOTE: There's a preferred form: d and s2 should point into the same condition register.
1718   inline void crand( int d, int s1, int s2);
1719   inline void crnand(int d, int s1, int s2);
1720   inline void cror(  int d, int s1, int s2);
1721   inline void crxor( int d, int s1, int s2);
1722   inline void crnor( int d, int s1, int s2);
1723   inline void creqv( int d, int s1, int s2);
1724   inline void crandc(int d, int s1, int s2);
1725   inline void crorc( int d, int s1, int s2);
1726 
1727   // More convenient version.
1728   int condition_register_bit(ConditionRegister cr, Condition c) {
1729     return 4 * (int)(intptr_t)cr + c;
1730   }
1731   void crand( ConditionRegister crdst, Condition cdst, ConditionRegister crsrc, Condition csrc);
1732   void crnand(ConditionRegister crdst, Condition cdst, ConditionRegister crsrc, Condition csrc);
1733   void cror(  ConditionRegister crdst, Condition cdst, ConditionRegister crsrc, Condition csrc);
1734   void crxor( ConditionRegister crdst, Condition cdst, ConditionRegister crsrc, Condition csrc);
1735   void crnor( ConditionRegister crdst, Condition cdst, ConditionRegister crsrc, Condition csrc);
1736   void creqv( ConditionRegister crdst, Condition cdst, ConditionRegister crsrc, Condition csrc);
1737   void crandc(ConditionRegister crdst, Condition cdst, ConditionRegister crsrc, Condition csrc);
1738   void crorc( ConditionRegister crdst, Condition cdst, ConditionRegister crsrc, Condition csrc);
1739 
1740   // icache and dcache related instructions
1741   inline void icbi(  Register s1, Register s2);
1742   //inline void dcba(Register s1, Register s2); // Instruction for embedded processor only.
1743   inline void dcbz(  Register s1, Register s2);
1744   inline void dcbst( Register s1, Register s2);
1745   inline void dcbf(  Register s1, Register s2);
1746 
1747   enum ct_cache_specification {
1748     ct_primary_cache   = 0,
1749     ct_secondary_cache = 2
1750   };
1751   // dcache read hint
1752   inline void dcbt(    Register s1, Register s2);
1753   inline void dcbtct(  Register s1, Register s2, int ct);
1754   inline void dcbtds(  Register s1, Register s2, int ds);
1755   // dcache write hint
1756   inline void dcbtst(  Register s1, Register s2);
1757   inline void dcbtstct(Register s1, Register s2, int ct);
1758 
1759   //  machine barrier instructions:
1760   //
1761   //  - sync    two-way memory barrier, aka fence
1762   //  - lwsync  orders  Store|Store,
1763   //                     Load|Store,
1764   //                     Load|Load,
1765   //            but not Store|Load
1766   //  - eieio   orders memory accesses for device memory (only)
1767   //  - isync   invalidates speculatively executed instructions
1768   //            From the Power ISA 2.06 documentation:
1769   //             "[...] an isync instruction prevents the execution of
1770   //            instructions following the isync until instructions
1771   //            preceding the isync have completed, [...]"
1772   //            From IBM's AIX assembler reference:
1773   //             "The isync [...] instructions causes the processor to
1774   //            refetch any instructions that might have been fetched
1775   //            prior to the isync instruction. The instruction isync
1776   //            causes the processor to wait for all previous instructions
1777   //            to complete. Then any instructions already fetched are
1778   //            discarded and instruction processing continues in the
1779   //            environment established by the previous instructions."
1780   //
1781   //  semantic barrier instructions:
1782   //  (as defined in orderAccess.hpp)
1783   //
1784   //  - release  orders Store|Store,       (maps to lwsync)
1785   //                     Load|Store
1786   //  - acquire  orders  Load|Store,       (maps to lwsync)
1787   //                     Load|Load
1788   //  - fence    orders Store|Store,       (maps to sync)
1789   //                     Load|Store,
1790   //                     Load|Load,
1791   //                    Store|Load
1792   //
1793  private:
1794   inline void sync(int l);
1795  public:
1796   inline void sync();
1797   inline void lwsync();
1798   inline void ptesync();
1799   inline void eieio();
1800   inline void isync();
1801   inline void elemental_membar(int e); // Elemental Memory Barriers (>=Power 8)
1802 
1803   // Wait instructions for polling. Attention: May result in SIGILL.
1804   inline void wait();
1805   inline void waitrsv(); // >=Power7
1806 
1807   // atomics
1808   inline void lbarx_unchecked(Register d, Register a, Register b, int eh1 = 0); // >=Power 8
1809   inline void lharx_unchecked(Register d, Register a, Register b, int eh1 = 0); // >=Power 8
1810   inline void lwarx_unchecked(Register d, Register a, Register b, int eh1 = 0);
1811   inline void ldarx_unchecked(Register d, Register a, Register b, int eh1 = 0);
1812   inline void lqarx_unchecked(Register d, Register a, Register b, int eh1 = 0); // >=Power 8
1813   inline bool lxarx_hint_exclusive_access();
1814   inline void lbarx(  Register d, Register a, Register b, bool hint_exclusive_access = false);
1815   inline void lharx(  Register d, Register a, Register b, bool hint_exclusive_access = false);
1816   inline void lwarx(  Register d, Register a, Register b, bool hint_exclusive_access = false);
1817   inline void ldarx(  Register d, Register a, Register b, bool hint_exclusive_access = false);
1818   inline void lqarx(  Register d, Register a, Register b, bool hint_exclusive_access = false);
1819   inline void stbcx_( Register s, Register a, Register b);
1820   inline void sthcx_( Register s, Register a, Register b);
1821   inline void stwcx_( Register s, Register a, Register b);
1822   inline void stdcx_( Register s, Register a, Register b);
1823   inline void stqcx_( Register s, Register a, Register b);
1824 
1825   // Instructions for adjusting thread priority for simultaneous
1826   // multithreading (SMT) on Power5.
1827  private:
1828   inline void smt_prio_very_low();
1829   inline void smt_prio_medium_high();
1830   inline void smt_prio_high();
1831 
1832  public:
1833   inline void smt_prio_low();
1834   inline void smt_prio_medium_low();
1835   inline void smt_prio_medium();
1836   // >= Power7
1837   inline void smt_yield();
1838   inline void smt_mdoio();
1839   inline void smt_mdoom();
1840   // >= Power8
1841   inline void smt_miso();
1842 
1843   // trap instructions
1844   inline void twi_0(Register a); // for load with acquire semantics use load+twi_0+isync (trap can't occur)
1845   // NOT FOR DIRECT USE!!
1846  protected:
1847   inline void tdi_unchecked(int tobits, Register a, int si16);
1848   inline void twi_unchecked(int tobits, Register a, int si16);
1849   inline void tdi(          int tobits, Register a, int si16);   // asserts UseSIGTRAP
1850   inline void twi(          int tobits, Register a, int si16);   // asserts UseSIGTRAP
1851   inline void td(           int tobits, Register a, Register b); // asserts UseSIGTRAP
1852   inline void tw(           int tobits, Register a, Register b); // asserts UseSIGTRAP
1853 
1854   static bool is_tdi(int x, int tobits, int ra, int si16) {
1855      return (TDI_OPCODE == (x & TDI_OPCODE_MASK))
1856          && (tobits == inv_to_field(x))
1857          && (ra == -1/*any reg*/ || ra == inv_ra_field(x))
1858          && (si16 == inv_si_field(x));
1859   }
1860 
1861   static bool is_twi(int x, int tobits, int ra, int si16) {
1862      return (TWI_OPCODE == (x & TWI_OPCODE_MASK))
1863          && (tobits == inv_to_field(x))
1864          && (ra == -1/*any reg*/ || ra == inv_ra_field(x))
1865          && (si16 == inv_si_field(x));
1866   }
1867 
1868   static bool is_twi(int x, int tobits, int ra) {
1869      return (TWI_OPCODE == (x & TWI_OPCODE_MASK))
1870          && (tobits == inv_to_field(x))
1871          && (ra == -1/*any reg*/ || ra == inv_ra_field(x));
1872   }
1873 
1874   static bool is_td(int x, int tobits, int ra, int rb) {
1875      return (TD_OPCODE == (x & TD_OPCODE_MASK))
1876          && (tobits == inv_to_field(x))
1877          && (ra == -1/*any reg*/ || ra == inv_ra_field(x))
1878          && (rb == -1/*any reg*/ || rb == inv_rb_field(x));
1879   }
1880 
1881   static bool is_tw(int x, int tobits, int ra, int rb) {
1882      return (TW_OPCODE == (x & TW_OPCODE_MASK))
1883          && (tobits == inv_to_field(x))
1884          && (ra == -1/*any reg*/ || ra == inv_ra_field(x))
1885          && (rb == -1/*any reg*/ || rb == inv_rb_field(x));
1886   }
1887 
1888  public:
1889   // PPC floating point instructions
1890   // PPC 1, section 4.6.2 Floating-Point Load Instructions
1891   inline void lfs(  FloatRegister d, int si16,   Register a);
1892   inline void lfsu( FloatRegister d, int si16,   Register a);
1893   inline void lfsx( FloatRegister d, Register a, Register b);
1894   inline void lfd(  FloatRegister d, int si16,   Register a);
1895   inline void lfdu( FloatRegister d, int si16,   Register a);
1896   inline void lfdx( FloatRegister d, Register a, Register b);
1897 
1898   // PPC 1, section 4.6.3 Floating-Point Store Instructions
1899   inline void stfs(  FloatRegister s, int si16,   Register a);
1900   inline void stfsu( FloatRegister s, int si16,   Register a);
1901   inline void stfsx( FloatRegister s, Register a, Register b);
1902   inline void stfd(  FloatRegister s, int si16,   Register a);
1903   inline void stfdu( FloatRegister s, int si16,   Register a);
1904   inline void stfdx( FloatRegister s, Register a, Register b);
1905 
1906   // PPC 1, section 4.6.4 Floating-Point Move Instructions
1907   inline void fmr(  FloatRegister d, FloatRegister b);
1908   inline void fmr_( FloatRegister d, FloatRegister b);
1909 
1910   //  inline void mffgpr( FloatRegister d, Register b);
1911   //  inline void mftgpr( Register d, FloatRegister b);
1912   inline void cmpb(   Register a, Register s, Register b);
1913   inline void popcntb(Register a, Register s);
1914   inline void popcntw(Register a, Register s);
1915   inline void popcntd(Register a, Register s);
1916 
1917   inline void fneg(  FloatRegister d, FloatRegister b);
1918   inline void fneg_( FloatRegister d, FloatRegister b);
1919   inline void fabs(  FloatRegister d, FloatRegister b);
1920   inline void fabs_( FloatRegister d, FloatRegister b);
1921   inline void fnabs( FloatRegister d, FloatRegister b);
1922   inline void fnabs_(FloatRegister d, FloatRegister b);
1923 
1924   // PPC 1, section 4.6.5.1 Floating-Point Elementary Arithmetic Instructions
1925   inline void fadd(  FloatRegister d, FloatRegister a, FloatRegister b);
1926   inline void fadd_( FloatRegister d, FloatRegister a, FloatRegister b);
1927   inline void fadds( FloatRegister d, FloatRegister a, FloatRegister b);
1928   inline void fadds_(FloatRegister d, FloatRegister a, FloatRegister b);
1929   inline void fsub(  FloatRegister d, FloatRegister a, FloatRegister b);
1930   inline void fsub_( FloatRegister d, FloatRegister a, FloatRegister b);
1931   inline void fsubs( FloatRegister d, FloatRegister a, FloatRegister b);
1932   inline void fsubs_(FloatRegister d, FloatRegister a, FloatRegister b);
1933   inline void fmul(  FloatRegister d, FloatRegister a, FloatRegister c);
1934   inline void fmul_( FloatRegister d, FloatRegister a, FloatRegister c);
1935   inline void fmuls( FloatRegister d, FloatRegister a, FloatRegister c);
1936   inline void fmuls_(FloatRegister d, FloatRegister a, FloatRegister c);
1937   inline void fdiv(  FloatRegister d, FloatRegister a, FloatRegister b);
1938   inline void fdiv_( FloatRegister d, FloatRegister a, FloatRegister b);
1939   inline void fdivs( FloatRegister d, FloatRegister a, FloatRegister b);
1940   inline void fdivs_(FloatRegister d, FloatRegister a, FloatRegister b);
1941 
1942   // Fused multiply-accumulate instructions.
1943   // WARNING: Use only when rounding between the 2 parts is not desired.
1944   // Some floating point tck tests will fail if used incorrectly.
1945   inline void fmadd(   FloatRegister d, FloatRegister a, FloatRegister c, FloatRegister b);
1946   inline void fmadd_(  FloatRegister d, FloatRegister a, FloatRegister c, FloatRegister b);
1947   inline void fmadds(  FloatRegister d, FloatRegister a, FloatRegister c, FloatRegister b);
1948   inline void fmadds_( FloatRegister d, FloatRegister a, FloatRegister c, FloatRegister b);
1949   inline void fmsub(   FloatRegister d, FloatRegister a, FloatRegister c, FloatRegister b);
1950   inline void fmsub_(  FloatRegister d, FloatRegister a, FloatRegister c, FloatRegister b);
1951   inline void fmsubs(  FloatRegister d, FloatRegister a, FloatRegister c, FloatRegister b);
1952   inline void fmsubs_( FloatRegister d, FloatRegister a, FloatRegister c, FloatRegister b);
1953   inline void fnmadd(  FloatRegister d, FloatRegister a, FloatRegister c, FloatRegister b);
1954   inline void fnmadd_( FloatRegister d, FloatRegister a, FloatRegister c, FloatRegister b);
1955   inline void fnmadds( FloatRegister d, FloatRegister a, FloatRegister c, FloatRegister b);
1956   inline void fnmadds_(FloatRegister d, FloatRegister a, FloatRegister c, FloatRegister b);
1957   inline void fnmsub(  FloatRegister d, FloatRegister a, FloatRegister c, FloatRegister b);
1958   inline void fnmsub_( FloatRegister d, FloatRegister a, FloatRegister c, FloatRegister b);
1959   inline void fnmsubs( FloatRegister d, FloatRegister a, FloatRegister c, FloatRegister b);
1960   inline void fnmsubs_(FloatRegister d, FloatRegister a, FloatRegister c, FloatRegister b);
1961 
1962   // PPC 1, section 4.6.6 Floating-Point Rounding and Conversion Instructions
1963   inline void frsp(  FloatRegister d, FloatRegister b);
1964   inline void fctid( FloatRegister d, FloatRegister b);
1965   inline void fctidz(FloatRegister d, FloatRegister b);
1966   inline void fctiw( FloatRegister d, FloatRegister b);
1967   inline void fctiwz(FloatRegister d, FloatRegister b);
1968   inline void fcfid( FloatRegister d, FloatRegister b);
1969   inline void fcfids(FloatRegister d, FloatRegister b);
1970 
1971   // PPC 1, section 4.6.7 Floating-Point Compare Instructions
1972   inline void fcmpu( ConditionRegister crx, FloatRegister a, FloatRegister b);
1973 
1974   inline void fsqrt( FloatRegister d, FloatRegister b);
1975   inline void fsqrts(FloatRegister d, FloatRegister b);
1976 
1977   // Vector instructions for >= Power6.
1978   inline void lvebx(    VectorRegister d, Register s1, Register s2);
1979   inline void lvehx(    VectorRegister d, Register s1, Register s2);
1980   inline void lvewx(    VectorRegister d, Register s1, Register s2);
1981   inline void lvx(      VectorRegister d, Register s1, Register s2);
1982   inline void lvxl(     VectorRegister d, Register s1, Register s2);
1983   inline void stvebx(   VectorRegister d, Register s1, Register s2);
1984   inline void stvehx(   VectorRegister d, Register s1, Register s2);
1985   inline void stvewx(   VectorRegister d, Register s1, Register s2);
1986   inline void stvx(     VectorRegister d, Register s1, Register s2);
1987   inline void stvxl(    VectorRegister d, Register s1, Register s2);
1988   inline void lvsl(     VectorRegister d, Register s1, Register s2);
1989   inline void lvsr(     VectorRegister d, Register s1, Register s2);
1990   inline void vpkpx(    VectorRegister d, VectorRegister a, VectorRegister b);
1991   inline void vpkshss(  VectorRegister d, VectorRegister a, VectorRegister b);
1992   inline void vpkswss(  VectorRegister d, VectorRegister a, VectorRegister b);
1993   inline void vpkshus(  VectorRegister d, VectorRegister a, VectorRegister b);
1994   inline void vpkswus(  VectorRegister d, VectorRegister a, VectorRegister b);
1995   inline void vpkuhum(  VectorRegister d, VectorRegister a, VectorRegister b);
1996   inline void vpkuwum(  VectorRegister d, VectorRegister a, VectorRegister b);
1997   inline void vpkuhus(  VectorRegister d, VectorRegister a, VectorRegister b);
1998   inline void vpkuwus(  VectorRegister d, VectorRegister a, VectorRegister b);
1999   inline void vupkhpx(  VectorRegister d, VectorRegister b);
2000   inline void vupkhsb(  VectorRegister d, VectorRegister b);
2001   inline void vupkhsh(  VectorRegister d, VectorRegister b);
2002   inline void vupklpx(  VectorRegister d, VectorRegister b);
2003   inline void vupklsb(  VectorRegister d, VectorRegister b);
2004   inline void vupklsh(  VectorRegister d, VectorRegister b);
2005   inline void vmrghb(   VectorRegister d, VectorRegister a, VectorRegister b);
2006   inline void vmrghw(   VectorRegister d, VectorRegister a, VectorRegister b);
2007   inline void vmrghh(   VectorRegister d, VectorRegister a, VectorRegister b);
2008   inline void vmrglb(   VectorRegister d, VectorRegister a, VectorRegister b);
2009   inline void vmrglw(   VectorRegister d, VectorRegister a, VectorRegister b);
2010   inline void vmrglh(   VectorRegister d, VectorRegister a, VectorRegister b);
2011   inline void vsplt(    VectorRegister d, int ui4,          VectorRegister b);
2012   inline void vsplth(   VectorRegister d, int ui3,          VectorRegister b);
2013   inline void vspltw(   VectorRegister d, int ui2,          VectorRegister b);
2014   inline void vspltisb( VectorRegister d, int si5);
2015   inline void vspltish( VectorRegister d, int si5);
2016   inline void vspltisw( VectorRegister d, int si5);
2017   inline void vperm(    VectorRegister d, VectorRegister a, VectorRegister b, VectorRegister c);
2018   inline void vsel(     VectorRegister d, VectorRegister a, VectorRegister b, VectorRegister c);
2019   inline void vsl(      VectorRegister d, VectorRegister a, VectorRegister b);
2020   inline void vsldoi(   VectorRegister d, VectorRegister a, VectorRegister b, int si4);
2021   inline void vslo(     VectorRegister d, VectorRegister a, VectorRegister b);
2022   inline void vsr(      VectorRegister d, VectorRegister a, VectorRegister b);
2023   inline void vsro(     VectorRegister d, VectorRegister a, VectorRegister b);
2024   inline void vaddcuw(  VectorRegister d, VectorRegister a, VectorRegister b);
2025   inline void vaddshs(  VectorRegister d, VectorRegister a, VectorRegister b);
2026   inline void vaddsbs(  VectorRegister d, VectorRegister a, VectorRegister b);
2027   inline void vaddsws(  VectorRegister d, VectorRegister a, VectorRegister b);
2028   inline void vaddubm(  VectorRegister d, VectorRegister a, VectorRegister b);
2029   inline void vadduwm(  VectorRegister d, VectorRegister a, VectorRegister b);
2030   inline void vadduhm(  VectorRegister d, VectorRegister a, VectorRegister b);
2031   inline void vaddubs(  VectorRegister d, VectorRegister a, VectorRegister b);
2032   inline void vadduws(  VectorRegister d, VectorRegister a, VectorRegister b);
2033   inline void vadduhs(  VectorRegister d, VectorRegister a, VectorRegister b);
2034   inline void vsubcuw(  VectorRegister d, VectorRegister a, VectorRegister b);
2035   inline void vsubshs(  VectorRegister d, VectorRegister a, VectorRegister b);
2036   inline void vsubsbs(  VectorRegister d, VectorRegister a, VectorRegister b);
2037   inline void vsubsws(  VectorRegister d, VectorRegister a, VectorRegister b);
2038   inline void vsububm(  VectorRegister d, VectorRegister a, VectorRegister b);
2039   inline void vsubuwm(  VectorRegister d, VectorRegister a, VectorRegister b);
2040   inline void vsubuhm(  VectorRegister d, VectorRegister a, VectorRegister b);
2041   inline void vsububs(  VectorRegister d, VectorRegister a, VectorRegister b);
2042   inline void vsubuws(  VectorRegister d, VectorRegister a, VectorRegister b);
2043   inline void vsubuhs(  VectorRegister d, VectorRegister a, VectorRegister b);
2044   inline void vmulesb(  VectorRegister d, VectorRegister a, VectorRegister b);
2045   inline void vmuleub(  VectorRegister d, VectorRegister a, VectorRegister b);
2046   inline void vmulesh(  VectorRegister d, VectorRegister a, VectorRegister b);
2047   inline void vmuleuh(  VectorRegister d, VectorRegister a, VectorRegister b);
2048   inline void vmulosb(  VectorRegister d, VectorRegister a, VectorRegister b);
2049   inline void vmuloub(  VectorRegister d, VectorRegister a, VectorRegister b);
2050   inline void vmulosh(  VectorRegister d, VectorRegister a, VectorRegister b);
2051   inline void vmulouh(  VectorRegister d, VectorRegister a, VectorRegister b);
2052   inline void vmhaddshs(VectorRegister d, VectorRegister a, VectorRegister b, VectorRegister c);
2053   inline void vmhraddshs(VectorRegister d,VectorRegister a, VectorRegister b, VectorRegister c);
2054   inline void vmladduhm(VectorRegister d, VectorRegister a, VectorRegister b, VectorRegister c);
2055   inline void vmsubuhm( VectorRegister d, VectorRegister a, VectorRegister b, VectorRegister c);
2056   inline void vmsummbm( VectorRegister d, VectorRegister a, VectorRegister b, VectorRegister c);
2057   inline void vmsumshm( VectorRegister d, VectorRegister a, VectorRegister b, VectorRegister c);
2058   inline void vmsumshs( VectorRegister d, VectorRegister a, VectorRegister b, VectorRegister c);
2059   inline void vmsumuhm( VectorRegister d, VectorRegister a, VectorRegister b, VectorRegister c);
2060   inline void vmsumuhs( VectorRegister d, VectorRegister a, VectorRegister b, VectorRegister c);
2061   inline void vsumsws(  VectorRegister d, VectorRegister a, VectorRegister b);
2062   inline void vsum2sws( VectorRegister d, VectorRegister a, VectorRegister b);
2063   inline void vsum4sbs( VectorRegister d, VectorRegister a, VectorRegister b);
2064   inline void vsum4ubs( VectorRegister d, VectorRegister a, VectorRegister b);
2065   inline void vsum4shs( VectorRegister d, VectorRegister a, VectorRegister b);
2066   inline void vavgsb(   VectorRegister d, VectorRegister a, VectorRegister b);
2067   inline void vavgsw(   VectorRegister d, VectorRegister a, VectorRegister b);
2068   inline void vavgsh(   VectorRegister d, VectorRegister a, VectorRegister b);
2069   inline void vavgub(   VectorRegister d, VectorRegister a, VectorRegister b);
2070   inline void vavguw(   VectorRegister d, VectorRegister a, VectorRegister b);
2071   inline void vavguh(   VectorRegister d, VectorRegister a, VectorRegister b);
2072   inline void vmaxsb(   VectorRegister d, VectorRegister a, VectorRegister b);
2073   inline void vmaxsw(   VectorRegister d, VectorRegister a, VectorRegister b);
2074   inline void vmaxsh(   VectorRegister d, VectorRegister a, VectorRegister b);
2075   inline void vmaxub(   VectorRegister d, VectorRegister a, VectorRegister b);
2076   inline void vmaxuw(   VectorRegister d, VectorRegister a, VectorRegister b);
2077   inline void vmaxuh(   VectorRegister d, VectorRegister a, VectorRegister b);
2078   inline void vminsb(   VectorRegister d, VectorRegister a, VectorRegister b);
2079   inline void vminsw(   VectorRegister d, VectorRegister a, VectorRegister b);
2080   inline void vminsh(   VectorRegister d, VectorRegister a, VectorRegister b);
2081   inline void vminub(   VectorRegister d, VectorRegister a, VectorRegister b);
2082   inline void vminuw(   VectorRegister d, VectorRegister a, VectorRegister b);
2083   inline void vminuh(   VectorRegister d, VectorRegister a, VectorRegister b);
2084   inline void vcmpequb( VectorRegister d, VectorRegister a, VectorRegister b);
2085   inline void vcmpequh( VectorRegister d, VectorRegister a, VectorRegister b);
2086   inline void vcmpequw( VectorRegister d, VectorRegister a, VectorRegister b);
2087   inline void vcmpgtsh( VectorRegister d, VectorRegister a, VectorRegister b);
2088   inline void vcmpgtsb( VectorRegister d, VectorRegister a, VectorRegister b);
2089   inline void vcmpgtsw( VectorRegister d, VectorRegister a, VectorRegister b);
2090   inline void vcmpgtub( VectorRegister d, VectorRegister a, VectorRegister b);
2091   inline void vcmpgtuh( VectorRegister d, VectorRegister a, VectorRegister b);
2092   inline void vcmpgtuw( VectorRegister d, VectorRegister a, VectorRegister b);
2093   inline void vcmpequb_(VectorRegister d, VectorRegister a, VectorRegister b);
2094   inline void vcmpequh_(VectorRegister d, VectorRegister a, VectorRegister b);
2095   inline void vcmpequw_(VectorRegister d, VectorRegister a, VectorRegister b);
2096   inline void vcmpgtsh_(VectorRegister d, VectorRegister a, VectorRegister b);
2097   inline void vcmpgtsb_(VectorRegister d, VectorRegister a, VectorRegister b);
2098   inline void vcmpgtsw_(VectorRegister d, VectorRegister a, VectorRegister b);
2099   inline void vcmpgtub_(VectorRegister d, VectorRegister a, VectorRegister b);
2100   inline void vcmpgtuh_(VectorRegister d, VectorRegister a, VectorRegister b);
2101   inline void vcmpgtuw_(VectorRegister d, VectorRegister a, VectorRegister b);
2102   inline void vand(     VectorRegister d, VectorRegister a, VectorRegister b);
2103   inline void vandc(    VectorRegister d, VectorRegister a, VectorRegister b);
2104   inline void vnor(     VectorRegister d, VectorRegister a, VectorRegister b);
2105   inline void vor(      VectorRegister d, VectorRegister a, VectorRegister b);
2106   inline void vxor(     VectorRegister d, VectorRegister a, VectorRegister b);
2107   inline void vrld(     VectorRegister d, VectorRegister a, VectorRegister b);
2108   inline void vrlb(     VectorRegister d, VectorRegister a, VectorRegister b);
2109   inline void vrlw(     VectorRegister d, VectorRegister a, VectorRegister b);
2110   inline void vrlh(     VectorRegister d, VectorRegister a, VectorRegister b);
2111   inline void vslb(     VectorRegister d, VectorRegister a, VectorRegister b);
2112   inline void vskw(     VectorRegister d, VectorRegister a, VectorRegister b);
2113   inline void vslh(     VectorRegister d, VectorRegister a, VectorRegister b);
2114   inline void vsrb(     VectorRegister d, VectorRegister a, VectorRegister b);
2115   inline void vsrw(     VectorRegister d, VectorRegister a, VectorRegister b);
2116   inline void vsrh(     VectorRegister d, VectorRegister a, VectorRegister b);
2117   inline void vsrab(    VectorRegister d, VectorRegister a, VectorRegister b);
2118   inline void vsraw(    VectorRegister d, VectorRegister a, VectorRegister b);
2119   inline void vsrah(    VectorRegister d, VectorRegister a, VectorRegister b);
2120   // Vector Floating-Point not implemented yet
2121   inline void mtvscr(   VectorRegister b);
2122   inline void mfvscr(   VectorRegister d);
2123 
2124   // Vector-Scalar (VSX) instructions.
2125   inline void lxvd2x(   VectorSRegister d, Register a);
2126   inline void lxvd2x(   VectorSRegister d, Register a, Register b);
2127   inline void stxvd2x(  VectorSRegister d, Register a);
2128   inline void stxvd2x(  VectorSRegister d, Register a, Register b);
2129   inline void mtvrd(    VectorRegister  d, Register a);
2130   inline void mfvrd(    Register        a, VectorRegister d);
2131 
2132   // Vector-Scalar (VSX) instructions.
2133   inline void mtfprd(   FloatRegister   d, Register a);
2134   inline void mtfprwa(  FloatRegister   d, Register a);
2135   inline void mffprd(   Register        a, FloatRegister d);
2136 
2137   // AES (introduced with Power 8)
2138   inline void vcipher(     VectorRegister d, VectorRegister a, VectorRegister b);
2139   inline void vcipherlast( VectorRegister d, VectorRegister a, VectorRegister b);
2140   inline void vncipher(    VectorRegister d, VectorRegister a, VectorRegister b);
2141   inline void vncipherlast(VectorRegister d, VectorRegister a, VectorRegister b);
2142   inline void vsbox(       VectorRegister d, VectorRegister a);
2143 
2144   // SHA (introduced with Power 8)
2145   // Not yet implemented.
2146 
2147   // Vector Binary Polynomial Multiplication (introduced with Power 8)
2148   inline void vpmsumb(  VectorRegister d, VectorRegister a, VectorRegister b);
2149   inline void vpmsumd(  VectorRegister d, VectorRegister a, VectorRegister b);
2150   inline void vpmsumh(  VectorRegister d, VectorRegister a, VectorRegister b);
2151   inline void vpmsumw(  VectorRegister d, VectorRegister a, VectorRegister b);
2152 
2153   // Vector Permute and Xor (introduced with Power 8)
2154   inline void vpermxor( VectorRegister d, VectorRegister a, VectorRegister b, VectorRegister c);
2155 
2156   // Transactional Memory instructions (introduced with Power 8)
2157   inline void tbegin_();    // R=0
2158   inline void tbeginrot_(); // R=1 Rollback-Only Transaction
2159   inline void tend_();    // A=0
2160   inline void tendall_(); // A=1
2161   inline void tabort_();
2162   inline void tabort_(Register a);
2163   inline void tabortwc_(int t, Register a, Register b);
2164   inline void tabortwci_(int t, Register a, int si);
2165   inline void tabortdc_(int t, Register a, Register b);
2166   inline void tabortdci_(int t, Register a, int si);
2167   inline void tsuspend_(); // tsr with L=0
2168   inline void tresume_();  // tsr with L=1
2169   inline void tcheck(int f);
2170 
2171   static bool is_tbegin(int x) {
2172     return TBEGIN_OPCODE == (x & (0x3f << OPCODE_SHIFT | 0x3ff << 1));
2173   }
2174 
2175   // The following encoders use r0 as second operand. These instructions
2176   // read r0 as '0'.
2177   inline void lwzx( Register d, Register s2);
2178   inline void lwz(  Register d, int si16);
2179   inline void lwax( Register d, Register s2);
2180   inline void lwa(  Register d, int si16);
2181   inline void lwbrx(Register d, Register s2);
2182   inline void lhzx( Register d, Register s2);
2183   inline void lhz(  Register d, int si16);
2184   inline void lhax( Register d, Register s2);
2185   inline void lha(  Register d, int si16);
2186   inline void lhbrx(Register d, Register s2);
2187   inline void lbzx( Register d, Register s2);
2188   inline void lbz(  Register d, int si16);
2189   inline void ldx(  Register d, Register s2);
2190   inline void ld(   Register d, int si16);
2191   inline void stwx( Register d, Register s2);
2192   inline void stw(  Register d, int si16);
2193   inline void sthx( Register d, Register s2);
2194   inline void sth(  Register d, int si16);
2195   inline void stbx( Register d, Register s2);
2196   inline void stb(  Register d, int si16);
2197   inline void stdx( Register d, Register s2);
2198   inline void std(  Register d, int si16);
2199 
2200   // PPC 2, section 3.2.1 Instruction Cache Instructions
2201   inline void icbi(    Register s2);
2202   // PPC 2, section 3.2.2 Data Cache Instructions
2203   //inlinevoid dcba(   Register s2); // Instruction for embedded processor only.
2204   inline void dcbz(    Register s2);
2205   inline void dcbst(   Register s2);
2206   inline void dcbf(    Register s2);
2207   // dcache read hint
2208   inline void dcbt(    Register s2);
2209   inline void dcbtct(  Register s2, int ct);
2210   inline void dcbtds(  Register s2, int ds);
2211   // dcache write hint
2212   inline void dcbtst(  Register s2);
2213   inline void dcbtstct(Register s2, int ct);
2214 
2215   // Atomics: use ra0mem to disallow R0 as base.
2216   inline void lbarx_unchecked(Register d, Register b, int eh1);
2217   inline void lharx_unchecked(Register d, Register b, int eh1);
2218   inline void lwarx_unchecked(Register d, Register b, int eh1);
2219   inline void ldarx_unchecked(Register d, Register b, int eh1);
2220   inline void lqarx_unchecked(Register d, Register b, int eh1);
2221   inline void lbarx( Register d, Register b, bool hint_exclusive_access);
2222   inline void lharx( Register d, Register b, bool hint_exclusive_access);
2223   inline void lwarx( Register d, Register b, bool hint_exclusive_access);
2224   inline void ldarx( Register d, Register b, bool hint_exclusive_access);
2225   inline void lqarx( Register d, Register b, bool hint_exclusive_access);
2226   inline void stbcx_(Register s, Register b);
2227   inline void sthcx_(Register s, Register b);
2228   inline void stwcx_(Register s, Register b);
2229   inline void stdcx_(Register s, Register b);
2230   inline void stqcx_(Register s, Register b);
2231   inline void lfs(   FloatRegister d, int si16);
2232   inline void lfsx(  FloatRegister d, Register b);
2233   inline void lfd(   FloatRegister d, int si16);
2234   inline void lfdx(  FloatRegister d, Register b);
2235   inline void stfs(  FloatRegister s, int si16);
2236   inline void stfsx( FloatRegister s, Register b);
2237   inline void stfd(  FloatRegister s, int si16);
2238   inline void stfdx( FloatRegister s, Register b);
2239   inline void lvebx( VectorRegister d, Register s2);
2240   inline void lvehx( VectorRegister d, Register s2);
2241   inline void lvewx( VectorRegister d, Register s2);
2242   inline void lvx(   VectorRegister d, Register s2);
2243   inline void lvxl(  VectorRegister d, Register s2);
2244   inline void stvebx(VectorRegister d, Register s2);
2245   inline void stvehx(VectorRegister d, Register s2);
2246   inline void stvewx(VectorRegister d, Register s2);
2247   inline void stvx(  VectorRegister d, Register s2);
2248   inline void stvxl( VectorRegister d, Register s2);
2249   inline void lvsl(  VectorRegister d, Register s2);
2250   inline void lvsr(  VectorRegister d, Register s2);
2251 
2252   // RegisterOrConstant versions.
2253   // These emitters choose between the versions using two registers and
2254   // those with register and immediate, depending on the content of roc.
2255   // If the constant is not encodable as immediate, instructions to
2256   // load the constant are emitted beforehand. Store instructions need a
2257   // tmp reg if the constant is not encodable as immediate.
2258   // Size unpredictable.
2259   void ld(  Register d, RegisterOrConstant roc, Register s1 = noreg);
2260   void lwa( Register d, RegisterOrConstant roc, Register s1 = noreg);
2261   void lwz( Register d, RegisterOrConstant roc, Register s1 = noreg);
2262   void lha( Register d, RegisterOrConstant roc, Register s1 = noreg);
2263   void lhz( Register d, RegisterOrConstant roc, Register s1 = noreg);
2264   void lbz( Register d, RegisterOrConstant roc, Register s1 = noreg);
2265   void std( Register d, RegisterOrConstant roc, Register s1 = noreg, Register tmp = noreg);
2266   void stw( Register d, RegisterOrConstant roc, Register s1 = noreg, Register tmp = noreg);
2267   void sth( Register d, RegisterOrConstant roc, Register s1 = noreg, Register tmp = noreg);
2268   void stb( Register d, RegisterOrConstant roc, Register s1 = noreg, Register tmp = noreg);
2269   void add( Register d, RegisterOrConstant roc, Register s1);
2270   void subf(Register d, RegisterOrConstant roc, Register s1);
2271   void cmpd(ConditionRegister d, RegisterOrConstant roc, Register s1);
2272   // Load pointer d from s1+roc.
2273   void ld_ptr(Register d, RegisterOrConstant roc, Register s1 = noreg) { ld(d, roc, s1); }
2274 
2275   // Emit several instructions to load a 64 bit constant. This issues a fixed
2276   // instruction pattern so that the constant can be patched later on.
2277   enum {
2278     load_const_size = 5 * BytesPerInstWord
2279   };
2280          void load_const(Register d, long a,            Register tmp = noreg);
2281   inline void load_const(Register d, void* a,           Register tmp = noreg);
2282   inline void load_const(Register d, Label& L,          Register tmp = noreg);
2283   inline void load_const(Register d, AddressLiteral& a, Register tmp = noreg);
2284   inline void load_const32(Register d, int i); // load signed int (patchable)
2285 
2286   // Load a 64 bit constant, optimized, not identifyable.
2287   // Tmp can be used to increase ILP. Set return_simm16_rest = true to get a
2288   // 16 bit immediate offset. This is useful if the offset can be encoded in
2289   // a succeeding instruction.
2290          int load_const_optimized(Register d, long a,  Register tmp = noreg, bool return_simm16_rest = false);
2291   inline int load_const_optimized(Register d, void* a, Register tmp = noreg, bool return_simm16_rest = false) {
2292     return load_const_optimized(d, (long)(unsigned long)a, tmp, return_simm16_rest);
2293   }
2294 
2295   // If return_simm16_rest, the return value needs to get added afterwards.
2296          int add_const_optimized(Register d, Register s, long x, Register tmp = R0, bool return_simm16_rest = false);
2297   inline int add_const_optimized(Register d, Register s, void* a, Register tmp = R0, bool return_simm16_rest = false) {
2298     return add_const_optimized(d, s, (long)(unsigned long)a, tmp, return_simm16_rest);
2299   }
2300 
2301   // If return_simm16_rest, the return value needs to get added afterwards.
2302   inline int sub_const_optimized(Register d, Register s, long x, Register tmp = R0, bool return_simm16_rest = false) {
2303     return add_const_optimized(d, s, -x, tmp, return_simm16_rest);
2304   }
2305   inline int sub_const_optimized(Register d, Register s, void* a, Register tmp = R0, bool return_simm16_rest = false) {
2306     return sub_const_optimized(d, s, (long)(unsigned long)a, tmp, return_simm16_rest);
2307   }
2308 
2309   // Creation
2310   Assembler(CodeBuffer* code) : AbstractAssembler(code) {
2311 #ifdef CHECK_DELAY
2312     delay_state = no_delay;
2313 #endif
2314   }
2315 
2316   // Testing
2317 #ifndef PRODUCT
2318   void test_asm();
2319 #endif
2320 };
2321 
2322 
2323 #endif // CPU_PPC_VM_ASSEMBLER_PPC_HPP