sbcl-src/src/compiler/x86/insts.lisp

   1 ;;;; that part of the description of the x86 instruction set (for
   2 ;;;; 80386 and above) which can live on the cross-compilation host
   3
   4 ;;;; This software is part of the SBCL system. See the README file for
   5 ;;;; more information.
   6 ;;;;
   7 ;;;; This software is derived from the CMU CL system, which was
   8 ;;;; written at Carnegie Mellon University and released into the
   9 ;;;; public domain. The software is in the public domain and is
  10 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
  11 ;;;; files for more information.
  12
  13 (in-package "SB!VM")
  14 ;;; FIXME: SB!DISASSEM: prefixes are used so widely in this file that
  15 ;;; I wonder whether the separation of the disassembler from the
  16 ;;; virtual machine is valid or adds value.
  17
  18 ;;; Note: In CMU CL, this used to be a call to SET-DISASSEM-PARAMS.
  19 (setf sb!disassem:*disassem-inst-alignment-bytes* 1)
  20
  21 (deftype reg () '(unsigned-byte 3))
  22
  23 (def!constant +default-operand-size+ :dword)
  24 \f
  25 (eval-when (#-sb-xc :compile-toplevel :load-toplevel :execute)
  26
  27 (defun offset-next (value dstate)
  28   (declare (type integer value)
  29            (type sb!disassem:disassem-state dstate))
  30   (+ (sb!disassem:dstate-next-addr dstate) value))
  31
  32 (defparameter *default-address-size*
  33   ;; Actually, :DWORD is the only one really supported.
  34   :dword)
  35
  36 (defparameter *byte-reg-names*
  37   #(al cl dl bl ah ch dh bh))
  38 (defparameter *word-reg-names*
  39   #(ax cx dx bx sp bp si di))
  40 (defparameter *dword-reg-names*
  41   #(eax ecx edx ebx esp ebp esi edi))
  42
  43 (defun print-reg-with-width (value width stream dstate)
  44   (declare (ignore dstate))
  45   (princ (aref (ecase width
  46                  (:byte *byte-reg-names*)
  47                  (:word *word-reg-names*)
  48                  (:dword *dword-reg-names*))
  49                value)
  50          stream)
  51   ;; XXX plus should do some source-var notes
  52   )
  53
  54 (defun print-reg (value stream dstate)
  55   (declare (type reg value)
  56            (type stream stream)
  57            (type sb!disassem:disassem-state dstate))
  58   (print-reg-with-width value
  59                         (sb!disassem:dstate-get-prop dstate 'width)
  60                         stream
  61                         dstate))
  62
  63 (defun print-word-reg (value stream dstate)
  64   (declare (type reg value)
  65            (type stream stream)
  66            (type sb!disassem:disassem-state dstate))
  67   (print-reg-with-width value
  68                         (or (sb!disassem:dstate-get-prop dstate 'word-width)
  69                             +default-operand-size+)
  70                         stream
  71                         dstate))
  72
  73 (defun print-byte-reg (value stream dstate)
  74   (declare (type reg value)
  75            (type stream stream)
  76            (type sb!disassem:disassem-state dstate))
  77   (print-reg-with-width value :byte stream dstate))
  78
  79 (defun print-addr-reg (value stream dstate)
  80   (declare (type reg value)
  81            (type stream stream)
  82            (type sb!disassem:disassem-state dstate))
  83   (print-reg-with-width value *default-address-size* stream dstate))
  84
  85 (defun print-reg/mem (value stream dstate)
  86   (declare (type (or list reg) value)
  87            (type stream stream)
  88            (type sb!disassem:disassem-state dstate))
  89   (if (typep value 'reg)
  90       (print-reg value stream dstate)
  91       (print-mem-access value stream nil dstate)))
  92
  93 ;; Same as print-reg/mem, but prints an explicit size indicator for
  94 ;; memory references.
  95 (defun print-sized-reg/mem (value stream dstate)
  96   (declare (type (or list reg) value)
  97            (type stream stream)
  98            (type sb!disassem:disassem-state dstate))
  99   (if (typep value 'reg)
 100       (print-reg value stream dstate)
 101       (print-mem-access value stream t dstate)))
 102
 103 (defun print-byte-reg/mem (value stream dstate)
 104   (declare (type (or list reg) value)
 105            (type stream stream)
 106            (type sb!disassem:disassem-state dstate))
 107   (if (typep value 'reg)
 108       (print-byte-reg value stream dstate)
 109       (print-mem-access value stream t dstate)))
 110
 111 (defun print-word-reg/mem (value stream dstate)
 112   (declare (type (or list reg) value)
 113            (type stream stream)
 114            (type sb!disassem:disassem-state dstate))
 115   (if (typep value 'reg)
 116       (print-word-reg value stream dstate)
 117       (print-mem-access value stream nil dstate)))
 118
 119 (defun print-label (value stream dstate)
 120   (declare (ignore dstate))
 121   (sb!disassem:princ16 value stream))
 122
 123 ;;; Returns either an integer, meaning a register, or a list of
 124 ;;; (BASE-REG OFFSET INDEX-REG INDEX-SCALE), where any component
 125 ;;; may be missing or nil to indicate that it's not used or has the
 126 ;;; obvious default value (e.g., 1 for the index-scale).
 127 (defun prefilter-reg/mem (value dstate)
 128   (declare (type list value)
 129            (type sb!disassem:disassem-state dstate))
 130   (let ((mod (car value))
 131         (r/m (cadr value)))
 132     (declare (type (unsigned-byte 2) mod)
 133              (type (unsigned-byte 3) r/m))
 134     (cond ((= mod #b11)
 135            ;; registers
 136            r/m)
 137           ((= r/m #b100)
 138            ;; sib byte
 139            (let ((sib (sb!disassem:read-suffix 8 dstate)))
 140              (declare (type (unsigned-byte 8) sib))
 141              (let ((base-reg (ldb (byte 3 0) sib))
 142                    (index-reg (ldb (byte 3 3) sib))
 143                    (index-scale (ldb (byte 2 6) sib)))
 144                (declare (type (unsigned-byte 3) base-reg index-reg)
 145                         (type (unsigned-byte 2) index-scale))
 146                (let* ((offset
 147                        (case mod
 148                          (#b00
 149                           (if (= base-reg #b101)
 150                               (sb!disassem:read-signed-suffix 32 dstate)
 151                               nil))
 152                          (#b01
 153                           (sb!disassem:read-signed-suffix 8 dstate))
 154                          (#b10
 155                           (sb!disassem:read-signed-suffix 32 dstate)))))
 156                  (list (if (and (= mod #b00) (= base-reg #b101)) nil base-reg)
 157                        offset
 158                        (if (= index-reg #b100) nil index-reg)
 159                        (ash 1 index-scale))))))
 160           ((and (= mod #b00) (= r/m #b101))
 161            (list nil (sb!disassem:read-signed-suffix 32 dstate)) )
 162           ((= mod #b00)
 163            (list r/m))
 164           ((= mod #b01)
 165            (list r/m (sb!disassem:read-signed-suffix 8 dstate)))
 166           (t                            ; (= mod #b10)
 167            (list r/m (sb!disassem:read-signed-suffix 32 dstate))))))
 168
 169
 170 ;;; This is a sort of bogus prefilter that just stores the info globally for
 171 ;;; other people to use; it probably never gets printed.
 172 (defun prefilter-width (value dstate)
 173   (setf (sb!disassem:dstate-get-prop dstate 'width)
 174         (if (zerop value)
 175             :byte
 176             (let ((word-width
 177                    ;; set by a prefix instruction
 178                    (or (sb!disassem:dstate-get-prop dstate 'word-width)
 179                        +default-operand-size+)))
 180               (when (not (eql word-width +default-operand-size+))
 181                 ;; Reset it.
 182                 (setf (sb!disassem:dstate-get-prop dstate 'word-width)
 183                       +default-operand-size+))
 184               word-width))))
 185
 186 (defun read-address (value dstate)
 187   (declare (ignore value))              ; always nil anyway
 188   (sb!disassem:read-suffix (width-bits *default-address-size*) dstate))
 189
 190 (defun width-bits (width)
 191   (ecase width
 192     (:byte 8)
 193     (:word 16)
 194     (:dword 32)
 195     (:qword 64)
 196     (:dqword 128)
 197     (:float 32)
 198     (:double 64)))
 199
 200 ) ; EVAL-WHEN
 201 \f
 202 ;;;; disassembler argument types
 203
 204 (sb!disassem:define-arg-type displacement
 205   :sign-extend t
 206   :use-label #'offset-next
 207   :printer (lambda (value stream dstate)
 208              (sb!disassem:maybe-note-assembler-routine value nil dstate)
 209              (print-label value stream dstate)))
 210
 211 (sb!disassem:define-arg-type accum
 212   :printer (lambda (value stream dstate)
 213              (declare (ignore value)
 214                       (type stream stream)
 215                       (type sb!disassem:disassem-state dstate))
 216              (print-reg 0 stream dstate)))
 217
 218 (sb!disassem:define-arg-type word-accum
 219   :printer (lambda (value stream dstate)
 220              (declare (ignore value)
 221                       (type stream stream)
 222                       (type sb!disassem:disassem-state dstate))
 223              (print-word-reg 0 stream dstate)))
 224
 225 (sb!disassem:define-arg-type reg
 226   :printer #'print-reg)
 227
 228 (sb!disassem:define-arg-type addr-reg
 229   :printer #'print-addr-reg)
 230
 231 (sb!disassem:define-arg-type word-reg
 232   :printer #'print-word-reg)
 233
 234 (sb!disassem:define-arg-type imm-addr
 235   :prefilter #'read-address
 236   :printer #'print-label)
 237
 238 (sb!disassem:define-arg-type imm-data
 239   :prefilter (lambda (value dstate)
 240                (declare (ignore value)) ; always nil anyway
 241                (sb!disassem:read-suffix
 242                 (width-bits (sb!disassem:dstate-get-prop dstate 'width))
 243                 dstate)))
 244
 245 (sb!disassem:define-arg-type signed-imm-data
 246   :prefilter (lambda (value dstate)
 247                (declare (ignore value)) ; always nil anyway
 248                (let ((width (sb!disassem:dstate-get-prop dstate 'width)))
 249                  (sb!disassem:read-signed-suffix (width-bits width) dstate))))
 250
 251 (sb!disassem:define-arg-type signed-imm-byte
 252   :prefilter (lambda (value dstate)
 253                (declare (ignore value)) ; always nil anyway
 254                (sb!disassem:read-signed-suffix 8 dstate)))
 255
 256 (sb!disassem:define-arg-type signed-imm-dword
 257   :prefilter (lambda (value dstate)
 258                (declare (ignore value)) ; always nil anyway
 259                (sb!disassem:read-signed-suffix 32 dstate)))
 260
 261 (sb!disassem:define-arg-type imm-word
 262   :prefilter (lambda (value dstate)
 263                (declare (ignore value)) ; always nil anyway
 264                (let ((width
 265                       (or (sb!disassem:dstate-get-prop dstate 'word-width)
 266                           +default-operand-size+)))
 267                  (sb!disassem:read-suffix (width-bits width) dstate))))
 268
 269 (sb!disassem:define-arg-type signed-imm-word
 270   :prefilter (lambda (value dstate)
 271                (declare (ignore value)) ; always nil anyway
 272                (let ((width
 273                       (or (sb!disassem:dstate-get-prop dstate 'word-width)
 274                           +default-operand-size+)))
 275                  (sb!disassem:read-signed-suffix (width-bits width) dstate))))
 276
 277 ;;; needed for the ret imm16 instruction
 278 (sb!disassem:define-arg-type imm-word-16
 279   :prefilter (lambda (value dstate)
 280                (declare (ignore value)) ; always nil anyway
 281                (sb!disassem:read-suffix 16 dstate)))
 282
 283 (sb!disassem:define-arg-type reg/mem
 284   :prefilter #'prefilter-reg/mem
 285   :printer #'print-reg/mem)
 286 (sb!disassem:define-arg-type sized-reg/mem
 287   ;; Same as reg/mem, but prints an explicit size indicator for
 288   ;; memory references.
 289   :prefilter #'prefilter-reg/mem
 290   :printer #'print-sized-reg/mem)
 291 (sb!disassem:define-arg-type byte-reg/mem
 292   :prefilter #'prefilter-reg/mem
 293   :printer #'print-byte-reg/mem)
 294 (sb!disassem:define-arg-type word-reg/mem
 295   :prefilter #'prefilter-reg/mem
 296   :printer #'print-word-reg/mem)
 297
 298 ;;; added by jrd
 299 (eval-when (#-sb-xc :compile-toplevel :load-toplevel :execute)
 300 (defun print-fp-reg (value stream dstate)
 301   (declare (ignore dstate))
 302   (format stream "FR~D" value))
 303 (defun prefilter-fp-reg (value dstate)
 304   ;; just return it
 305   (declare (ignore dstate))
 306   value)
 307 ) ; EVAL-WHEN
 308 (sb!disassem:define-arg-type fp-reg
 309                              :prefilter #'prefilter-fp-reg
 310                              :printer #'print-fp-reg)
 311
 312 (sb!disassem:define-arg-type width
 313   :prefilter #'prefilter-width
 314   :printer (lambda (value stream dstate)
 315              (if;; (zerop value)
 316                  (or (null value)
 317                      (and (numberp value) (zerop value))) ; zzz jrd
 318                  (princ 'b stream)
 319                  (let ((word-width
 320                         ;; set by a prefix instruction
 321                         (or (sb!disassem:dstate-get-prop dstate 'word-width)
 322                             +default-operand-size+)))
 323                    (princ (schar (symbol-name word-width) 0) stream)))))
 324
 325 (eval-when (:compile-toplevel :load-toplevel :execute)
 326 (defparameter *conditions*
 327   '((:o . 0)
 328     (:no . 1)
 329     (:b . 2) (:nae . 2) (:c . 2)
 330     (:nb . 3) (:ae . 3) (:nc . 3)
 331     (:eq . 4) (:e . 4) (:z . 4)
 332     (:ne . 5) (:nz . 5)
 333     (:be . 6) (:na . 6)
 334     (:nbe . 7) (:a . 7)
 335     (:s . 8)
 336     (:ns . 9)
 337     (:p . 10) (:pe . 10)
 338     (:np . 11) (:po . 11)
 339     (:l . 12) (:nge . 12)
 340     (:nl . 13) (:ge . 13)
 341     (:le . 14) (:ng . 14)
 342     (:nle . 15) (:g . 15)))
 343 (defparameter *condition-name-vec*
 344   (let ((vec (make-array 16 :initial-element nil)))
 345     (dolist (cond *conditions*)
 346       (when (null (aref vec (cdr cond)))
 347         (setf (aref vec (cdr cond)) (car cond))))
 348     vec))
 349 ) ; EVAL-WHEN
 350
 351 ;;; Set assembler parameters. (In CMU CL, this was done with
 352 ;;; a call to a macro DEF-ASSEMBLER-PARAMS.)
 353 (eval-when (:compile-toplevel :load-toplevel :execute)
 354   (setf sb!assem:*assem-scheduler-p* nil))
 355
 356 (sb!disassem:define-arg-type condition-code
 357   :printer *condition-name-vec*)
 358
 359 (defun conditional-opcode (condition)
 360   (cdr (assoc condition *conditions* :test #'eq)))
 361 \f
 362 ;;;; disassembler instruction formats
 363
 364 (eval-when (:compile-toplevel :execute)
 365   (defun swap-if (direction field1 separator field2)
 366     `(:if (,direction :constant 0)
 367           (,field1 ,separator ,field2)
 368           (,field2 ,separator ,field1))))
 369
 370 (sb!disassem:define-instruction-format (byte 8 :default-printer '(:name))
 371   (op    :field (byte 8 0))
 372   ;; optional fields
 373   (accum :type 'accum)
 374   (imm))
 375
 376 (sb!disassem:define-instruction-format (simple 8)
 377   (op    :field (byte 7 1))
 378   (width :field (byte 1 0) :type 'width)
 379   ;; optional fields
 380   (accum :type 'accum)
 381   (imm))
 382
 383 ;;; Same as simple, but with direction bit
 384 (sb!disassem:define-instruction-format (simple-dir 8 :include 'simple)
 385   (op :field (byte 6 2))
 386   (dir :field (byte 1 1)))
 387
 388 ;;; Same as simple, but with the immediate value occurring by default,
 389 ;;; and with an appropiate printer.
 390 (sb!disassem:define-instruction-format (accum-imm 8
 391                                      :include 'simple
 392                                      :default-printer '(:name
 393                                                         :tab accum ", " imm))
 394   (imm :type 'imm-data))
 395
 396 (sb!disassem:define-instruction-format (reg-no-width 8
 397                                      :default-printer '(:name :tab reg))
 398   (op    :field (byte 5 3))
 399   (reg   :field (byte 3 0) :type 'word-reg)
 400   ;; optional fields
 401   (accum :type 'word-accum)
 402   (imm))
 403
 404 ;;; adds a width field to reg-no-width
 405 (sb!disassem:define-instruction-format (reg 8
 406                                         :default-printer '(:name :tab reg))
 407   (op    :field (byte 4 4))
 408   (width :field (byte 1 3) :type 'width)
 409   (reg   :field (byte 3 0) :type 'reg)
 410   ;; optional fields
 411   (accum :type 'accum)
 412   (imm)
 413   )
 414
 415 ;;; Same as reg, but with direction bit
 416 (sb!disassem:define-instruction-format (reg-dir 8 :include 'reg)
 417   (op  :field (byte 3 5))
 418   (dir :field (byte 1 4)))
 419
 420 (sb!disassem:define-instruction-format (two-bytes 16
 421                                         :default-printer '(:name))
 422   (op :fields (list (byte 8 0) (byte 8 8))))
 423
 424 (sb!disassem:define-instruction-format (reg-reg/mem 16
 425                                         :default-printer
 426                                         `(:name :tab reg ", " reg/mem))
 427   (op      :field (byte 7 1))
 428   (width   :field (byte 1 0)    :type 'width)
 429   (reg/mem :fields (list (byte 2 14) (byte 3 8))
 430                                 :type 'reg/mem)
 431   (reg     :field (byte 3 11)   :type 'reg)
 432   ;; optional fields
 433   (imm))
 434
 435 ;;; same as reg-reg/mem, but with direction bit
 436 (sb!disassem:define-instruction-format (reg-reg/mem-dir 16
 437                                         :include 'reg-reg/mem
 438                                         :default-printer
 439                                         `(:name
 440                                           :tab
 441                                           ,(swap-if 'dir 'reg/mem ", " 'reg)))
 442   (op  :field (byte 6 2))
 443   (dir :field (byte 1 1)))
 444
 445 ;;; Same as reg-rem/mem, but uses the reg field as a second op code.
 446 (sb!disassem:define-instruction-format (reg/mem 16
 447                                         :default-printer '(:name :tab reg/mem))
 448   (op      :fields (list (byte 7 1) (byte 3 11)))
 449   (width   :field (byte 1 0)    :type 'width)
 450   (reg/mem :fields (list (byte 2 14) (byte 3 8))
 451                                 :type 'sized-reg/mem)
 452   ;; optional fields
 453   (imm))
 454
 455 ;;; Same as reg/mem, but with the immediate value occurring by default,
 456 ;;; and with an appropiate printer.
 457 (sb!disassem:define-instruction-format (reg/mem-imm 16
 458                                         :include 'reg/mem
 459                                         :default-printer
 460                                         '(:name :tab reg/mem ", " imm))
 461   (reg/mem :type 'sized-reg/mem)
 462   (imm     :type 'imm-data))
 463
 464 ;;; Same as reg/mem, but with using the accumulator in the default printer
 465 (sb!disassem:define-instruction-format
 466     (accum-reg/mem 16
 467      :include 'reg/mem :default-printer '(:name :tab accum ", " reg/mem))
 468   (reg/mem :type 'reg/mem)              ; don't need a size
 469   (accum :type 'accum))
 470
 471 ;;; Same as reg-reg/mem, but with a prefix of #b00001111
 472 (sb!disassem:define-instruction-format (ext-reg-reg/mem 24
 473                                         :default-printer
 474                                         `(:name :tab reg ", " reg/mem))
 475   (prefix  :field (byte 8 0)    :value #b00001111)
 476   (op      :field (byte 7 9))
 477   (width   :field (byte 1 8)    :type 'width)
 478   (reg/mem :fields (list (byte 2 22) (byte 3 16))
 479                                 :type 'reg/mem)
 480   (reg     :field (byte 3 19)   :type 'reg)
 481   ;; optional fields
 482   (imm))
 483
 484 ;;; Same as reg/mem, but with a prefix of #b00001111
 485 (sb!disassem:define-instruction-format (ext-reg/mem 24
 486                                         :default-printer '(:name :tab reg/mem))
 487   (prefix  :field (byte 8 0)    :value #b00001111)
 488   (op      :fields (list (byte 7 9) (byte 3 19)))
 489   (width   :field (byte 1 8)    :type 'width)
 490   (reg/mem :fields (list (byte 2 22) (byte 3 16))
 491                                 :type 'sized-reg/mem)
 492   ;; optional fields
 493   (imm))
 494
 495 (sb!disassem:define-instruction-format (ext-reg/mem-imm 24
 496                                         :include 'ext-reg/mem
 497                                         :default-printer
 498                                         '(:name :tab reg/mem ", " imm))
 499   (imm :type 'imm-data))
 500 \f
 501 ;;;; This section was added by jrd, for fp instructions.
 502
 503 ;;; regular fp inst to/from registers/memory
 504 (sb!disassem:define-instruction-format (floating-point 16
 505                                         :default-printer
 506                                         `(:name :tab reg/mem))
 507   (prefix :field (byte 5 3) :value #b11011)
 508   (op     :fields (list (byte 3 0) (byte 3 11)))
 509   (reg/mem :fields (list (byte 2 14) (byte 3 8)) :type 'reg/mem))
 510
 511 ;;; fp insn to/from fp reg
 512 (sb!disassem:define-instruction-format (floating-point-fp 16
 513                                         :default-printer `(:name :tab fp-reg))
 514   (prefix :field (byte 5 3) :value #b11011)
 515   (suffix :field (byte 2 14) :value #b11)
 516   (op     :fields (list (byte 3 0) (byte 3 11)))
 517   (fp-reg :field (byte 3 8) :type 'fp-reg))
 518
 519 ;;; fp insn to/from fp reg, with the reversed source/destination flag.
 520 (sb!disassem:define-instruction-format
 521  (floating-point-fp-d 16
 522    :default-printer `(:name :tab ,(swap-if 'd "ST0" ", " 'fp-reg)))
 523   (prefix :field (byte 5 3) :value #b11011)
 524   (suffix :field (byte 2 14) :value #b11)
 525   (op     :fields (list (byte 2 0) (byte 3 11)))
 526   (d      :field (byte 1 2))
 527   (fp-reg :field (byte 3 8) :type 'fp-reg))
 528
 529
 530 ;;; (added by (?) pfw)
 531 ;;; fp no operand isns
 532 (sb!disassem:define-instruction-format (floating-point-no 16
 533                                       :default-printer '(:name))
 534   (prefix :field (byte 8  0) :value #b11011001)
 535   (suffix :field (byte 3 13) :value #b111)
 536   (op     :field (byte 5  8)))
 537
 538 (sb!disassem:define-instruction-format (floating-point-3 16
 539                                       :default-printer '(:name))
 540   (prefix :field (byte 5 3) :value #b11011)
 541   (suffix :field (byte 2 14) :value #b11)
 542   (op     :fields (list (byte 3 0) (byte 6 8))))
 543
 544 (sb!disassem:define-instruction-format (floating-point-5 16
 545                                       :default-printer '(:name))
 546   (prefix :field (byte 8  0) :value #b11011011)
 547   (suffix :field (byte 3 13) :value #b111)
 548   (op     :field (byte 5  8)))
 549
 550 (sb!disassem:define-instruction-format (floating-point-st 16
 551                                       :default-printer '(:name))
 552   (prefix :field (byte 8  0) :value #b11011111)
 553   (suffix :field (byte 3 13) :value #b111)
 554   (op     :field (byte 5  8)))
 555
 556 (sb!disassem:define-instruction-format (string-op 8
 557                                      :include 'simple
 558                                      :default-printer '(:name width)))
 559
 560 (sb!disassem:define-instruction-format (short-cond-jump 16)
 561   (op    :field (byte 4 4))
 562   (cc    :field (byte 4 0) :type 'condition-code)
 563   (label :field (byte 8 8) :type 'displacement))
 564
 565 (sb!disassem:define-instruction-format (short-jump 16
 566                                      :default-printer '(:name :tab label))
 567   (const :field (byte 4 4) :value #b1110)
 568   (op    :field (byte 4 0))
 569   (label :field (byte 8 8) :type 'displacement))
 570
 571 (sb!disassem:define-instruction-format (near-cond-jump 16)
 572   (op    :fields (list (byte 8 0) (byte 4 12)) :value '(#b00001111 #b1000))
 573   (cc    :field (byte 4 8) :type 'condition-code)
 574   ;; The disassembler currently doesn't let you have an instruction > 32 bits
 575   ;; long, so we fake it by using a prefilter to read the offset.
 576   (label :type 'displacement
 577          :prefilter (lambda (value dstate)
 578                       (declare (ignore value)) ; always nil anyway
 579                       (sb!disassem:read-signed-suffix 32 dstate))))
 580
 581 (sb!disassem:define-instruction-format (near-jump 8
 582                                      :default-printer '(:name :tab label))
 583   (op    :field (byte 8 0))
 584   ;; The disassembler currently doesn't let you have an instruction > 32 bits
 585   ;; long, so we fake it by using a prefilter to read the address.
 586   (label :type 'displacement
 587          :prefilter (lambda (value dstate)
 588                       (declare (ignore value)) ; always nil anyway
 589                       (sb!disassem:read-signed-suffix 32 dstate))))
 590
 591
 592 (sb!disassem:define-instruction-format (cond-set 24
 593                                      :default-printer '('set cc :tab reg/mem))
 594   (prefix :field (byte 8 0) :value #b00001111)
 595   (op    :field (byte 4 12) :value #b1001)
 596   (cc    :field (byte 4 8) :type 'condition-code)
 597   (reg/mem :fields (list (byte 2 22) (byte 3 16))
 598            :type 'byte-reg/mem)
 599   (reg     :field (byte 3 19)   :value #b000))
 600
 601 (sb!disassem:define-instruction-format (cond-move 24
 602                                      :default-printer
 603                                         '('cmov cc :tab reg ", " reg/mem))
 604   (prefix  :field (byte 8 0)    :value #b00001111)
 605   (op      :field (byte 4 12)   :value #b0100)
 606   (cc      :field (byte 4 8)    :type 'condition-code)
 607   (reg/mem :fields (list (byte 2 22) (byte 3 16))
 608                                 :type 'reg/mem)
 609   (reg     :field (byte 3 19)   :type 'reg))
 610
 611 (sb!disassem:define-instruction-format (enter-format 32
 612                                      :default-printer '(:name
 613                                                         :tab disp
 614                                                         (:unless (:constant 0)
 615                                                           ", " level)))
 616   (op :field (byte 8 0))
 617   (disp :field (byte 16 8))
 618   (level :field (byte 8 24)))
 619
 620 (sb!disassem:define-instruction-format (prefetch 24
 621                                                  :default-printer
 622                                                  '(:name ", " reg/mem))
 623   (prefix :field (byte 8 0) :value #b00001111)
 624   (op :field (byte 8 8) :value #b00011000)
 625   (reg/mem :fields (list (byte 2 22) (byte 3 16)) :type 'byte-reg/mem)
 626   (reg :field (byte 3 19) :type 'reg))
 627
 628 ;;; Single byte instruction with an immediate byte argument.
 629 (sb!disassem:define-instruction-format (byte-imm 16
 630                                      :default-printer '(:name :tab code))
 631  (op :field (byte 8 0))
 632  (code :field (byte 8 8)))
 633 \f
 634 ;;;; primitive emitters
 635
 636 (define-bitfield-emitter emit-word 16
 637   (byte 16 0))
 638
 639 (define-bitfield-emitter emit-dword 32
 640   (byte 32 0))
 641
 642 (define-bitfield-emitter emit-byte-with-reg 8
 643   (byte 5 3) (byte 3 0))
 644
 645 (define-bitfield-emitter emit-mod-reg-r/m-byte 8
 646   (byte 2 6) (byte 3 3) (byte 3 0))
 647
 648 (define-bitfield-emitter emit-sib-byte 8
 649   (byte 2 6) (byte 3 3) (byte 3 0))
 650 \f
 651 ;;;; fixup emitters
 652
 653 (defun emit-absolute-fixup (segment fixup)
 654   (note-fixup segment :absolute fixup)
 655   (let ((offset (fixup-offset fixup)))
 656     (if (label-p offset)
 657         (emit-back-patch segment
 658                          4 ; FIXME: n-word-bytes
 659                          (lambda (segment posn)
 660                            (declare (ignore posn))
 661                            (emit-dword segment
 662                                        (- (+ (component-header-length)
 663                                              (or (label-position offset)
 664                                                  0))
 665                                           other-pointer-lowtag))))
 666         (emit-dword segment (or offset 0)))))
 667
 668 (defun emit-relative-fixup (segment fixup)
 669   (note-fixup segment :relative fixup)
 670   (emit-dword segment (or (fixup-offset fixup) 0)))
 671 \f
 672 ;;;; the effective-address (ea) structure
 673
 674 (defun reg-tn-encoding (tn)
 675   (declare (type tn tn))
 676 ;  (aver (eq (sb-name (sc-sb (tn-sc tn))) 'registers))
 677   (let ((offset (tn-offset tn)))
 678     (logior (ash (logand offset 1) 2)
 679             (ash offset -1))))
 680
 681 (defstruct (ea (:constructor make-ea (size &key base index scale disp))
 682                (:copier nil))
 683   (size nil :type (member :byte :word :dword))
 684   (base nil :type (or tn null))
 685   (index nil :type (or tn null))
 686   (scale 1 :type (member 1 2 4 8))
 687   (disp 0 :type (or (unsigned-byte 32) (signed-byte 32) fixup)))
 688 (def!method print-object ((ea ea) stream)
 689   (cond ((or *print-escape* *print-readably*)
 690          (print-unreadable-object (ea stream :type t)
 691            (format stream
 692                    "~S~@[ base=~S~]~@[ index=~S~]~@[ scale=~S~]~@[ disp=~S~]"
 693                    (ea-size ea)
 694                    (ea-base ea)
 695                    (ea-index ea)
 696                    (let ((scale (ea-scale ea)))
 697                      (if (= scale 1) nil scale))
 698                    (ea-disp ea))))
 699         (t
 700          (format stream "~A PTR [" (symbol-name (ea-size ea)))
 701          (when (ea-base ea)
 702            (write-string (sb!c::location-print-name (ea-base ea)) stream)
 703            (when (ea-index ea)
 704              (write-string "+" stream)))
 705          (when (ea-index ea)
 706            (write-string (sb!c::location-print-name (ea-index ea)) stream))
 707          (unless (= (ea-scale ea) 1)
 708            (format stream "*~A" (ea-scale ea)))
 709          (typecase (ea-disp ea)
 710            (null)
 711            (integer
 712             (format stream "~@D" (ea-disp ea)))
 713            (t
 714             (format stream "+~A" (ea-disp ea))))
 715          (write-char #\] stream))))
 716
 717 (defun emit-ea (segment thing reg &optional allow-constants)
 718   (etypecase thing
 719     (tn
 720      (ecase (sb-name (sc-sb (tn-sc thing)))
 721        (registers
 722         (emit-mod-reg-r/m-byte segment #b11 reg (reg-tn-encoding thing)))
 723        (sse-registers
 724         (emit-mod-reg-r/m-byte segment #b11 reg (reg-tn-encoding thing)))
 725        (stack
 726         ;; Convert stack tns into an index off of EBP.
 727         (let ((disp (- (* (1+ (tn-offset thing)) n-word-bytes))))
 728           (cond ((< -128 disp 127)
 729                  (emit-mod-reg-r/m-byte segment #b01 reg #b101)
 730                  (emit-byte segment disp))
 731                 (t
 732                  (emit-mod-reg-r/m-byte segment #b10 reg #b101)
 733                  (emit-dword segment disp)))))
 734        (constant
 735         (unless allow-constants
 736           (error
 737            "Constant TNs can only be directly used in MOV, PUSH, and CMP."))
 738         (emit-mod-reg-r/m-byte segment #b00 reg #b101)
 739         (emit-absolute-fixup segment
 740                              (make-fixup nil
 741                                          :code-object
 742                                          (- (* (tn-offset thing) n-word-bytes)
 743                                             other-pointer-lowtag))))))
 744     (ea
 745      (let* ((base (ea-base thing))
 746             (index (ea-index thing))
 747             (scale (ea-scale thing))
 748             (disp (ea-disp thing))
 749             (mod (cond ((or (null base)
 750                             (and (eql disp 0)
 751                                  (not (= (reg-tn-encoding base) #b101))))
 752                         #b00)
 753                        ((and (fixnump disp) (<= -128 disp 127))
 754                         #b01)
 755                        (t
 756                         #b10)))
 757             (r/m (cond (index #b100)
 758                        ((null base) #b101)
 759                        (t (reg-tn-encoding base)))))
 760        (emit-mod-reg-r/m-byte segment mod reg r/m)
 761        (when (= r/m #b100)
 762          (let ((ss (1- (integer-length scale)))
 763                (index (if (null index)
 764                           #b100
 765                           (let ((index (reg-tn-encoding index)))
 766                             (if (= index #b100)
 767                                 (error "can't index off of ESP")
 768                                 index))))
 769                (base (if (null base)
 770                          #b101
 771                          (reg-tn-encoding base))))
 772            (emit-sib-byte segment ss index base)))
 773        (cond ((= mod #b01)
 774               (emit-byte segment disp))
 775              ((or (= mod #b10) (null base))
 776               (if (fixup-p disp)
 777                   (emit-absolute-fixup segment disp)
 778                   (emit-dword segment disp))))))
 779     (fixup
 780      (emit-mod-reg-r/m-byte segment #b00 reg #b101)
 781      (emit-absolute-fixup segment thing))))
 782
 783 (defun fp-reg-tn-p (thing)
 784   (and (tn-p thing)
 785        (eq (sb-name (sc-sb (tn-sc thing))) 'float-registers)))
 786
 787 ;;; like the above, but for fp-instructions--jrd
 788 (defun emit-fp-op (segment thing op)
 789   (if (fp-reg-tn-p thing)
 790       (emit-byte segment (dpb op (byte 3 3) (dpb (tn-offset thing)
 791                                                  (byte 3 0)
 792                                                  #b11000000)))
 793     (emit-ea segment thing op)))
 794
 795 (defun byte-reg-p (thing)
 796   (and (tn-p thing)
 797        (eq (sb-name (sc-sb (tn-sc thing))) 'registers)
 798        (member (sc-name (tn-sc thing)) *byte-sc-names*)
 799        t))
 800
 801 (defun byte-ea-p (thing)
 802   (typecase thing
 803     (ea (eq (ea-size thing) :byte))
 804     (tn
 805      (and (member (sc-name (tn-sc thing)) *byte-sc-names*) t))
 806     (t nil)))
 807
 808 (defun word-reg-p (thing)
 809   (and (tn-p thing)
 810        (eq (sb-name (sc-sb (tn-sc thing))) 'registers)
 811        (member (sc-name (tn-sc thing)) *word-sc-names*)
 812        t))
 813
 814 (defun word-ea-p (thing)
 815   (typecase thing
 816     (ea (eq (ea-size thing) :word))
 817     (tn (and (member (sc-name (tn-sc thing)) *word-sc-names*) t))
 818     (t nil)))
 819
 820 (defun dword-reg-p (thing)
 821   (and (tn-p thing)
 822        (eq (sb-name (sc-sb (tn-sc thing))) 'registers)
 823        (member (sc-name (tn-sc thing)) *dword-sc-names*)
 824        t))
 825
 826 (defun dword-ea-p (thing)
 827   (typecase thing
 828     (ea (eq (ea-size thing) :dword))
 829     (tn
 830      (and (member (sc-name (tn-sc thing)) *dword-sc-names*) t))
 831     (t nil)))
 832
 833 (defun register-p (thing)
 834   (and (tn-p thing)
 835        (eq (sb-name (sc-sb (tn-sc thing))) 'registers)))
 836
 837 (defun sse-register-p (thing)
 838   (and (tn-p thing)
 839        (eq (sb-name (sc-sb (tn-sc thing))) 'sse-registers)))
 840
 841 (defun accumulator-p (thing)
 842   (and (register-p thing)
 843        (= (tn-offset thing) 0)))
 844 \f
 845 ;;;; utilities
 846
 847 (def!constant +operand-size-prefix-byte+ #b01100110)
 848
 849 (defun maybe-emit-operand-size-prefix (segment size)
 850   (unless (or (eq size :byte) (eq size +default-operand-size+))
 851     (emit-byte segment +operand-size-prefix-byte+)))
 852
 853 (defun operand-size (thing)
 854   (typecase thing
 855     (tn
 856      ;; FIXME: might as well be COND instead of having to use #. readmacro
 857      ;; to hack up the code
 858      (case (sc-name (tn-sc thing))
 859        (#.*dword-sc-names*
 860         :dword)
 861        (#.*word-sc-names*
 862         :word)
 863        (#.*byte-sc-names*
 864         :byte)
 865        ;; added by jrd: float-registers is a separate size (?)
 866        (#.*float-sc-names*
 867         :float)
 868        (#.*double-sc-names*
 869         :double)
 870        (t
 871         (error "can't tell the size of ~S ~S" thing (sc-name (tn-sc thing))))))
 872     (ea
 873      (ea-size thing))
 874     (t
 875      nil)))
 876
 877 (defun matching-operand-size (dst src)
 878   (let ((dst-size (operand-size dst))
 879         (src-size (operand-size src)))
 880     (if dst-size
 881         (if src-size
 882             (if (eq dst-size src-size)
 883                 dst-size
 884                 (error "size mismatch: ~S is a ~S and ~S is a ~S."
 885                        dst dst-size src src-size))
 886             dst-size)
 887         (if src-size
 888             src-size
 889             (error "can't tell the size of either ~S or ~S" dst src)))))
 890
 891 (defun emit-sized-immediate (segment size value)
 892   (ecase size
 893     (:byte
 894      (emit-byte segment value))
 895     (:word
 896      (emit-word segment value))
 897     (:dword
 898      (emit-dword segment value))))
 899 \f
 900 ;;;; general data transfer
 901
 902 (define-instruction mov (segment dst src)
 903   ;; immediate to register
 904   (:printer reg ((op #b1011) (imm nil :type 'imm-data))
 905             '(:name :tab reg ", " imm))
 906   ;; absolute mem to/from accumulator
 907   (:printer simple-dir ((op #b101000) (imm nil :type 'imm-addr))
 908             `(:name :tab ,(swap-if 'dir 'accum ", " '("[" imm "]"))))
 909   ;; register to/from register/memory
 910   (:printer reg-reg/mem-dir ((op #b100010)))
 911   ;; immediate to register/memory
 912   (:printer reg/mem-imm ((op '(#b1100011 #b000))))
 913
 914   (:emitter
 915    (let ((size (matching-operand-size dst src)))
 916      (maybe-emit-operand-size-prefix segment size)
 917      (cond ((register-p dst)
 918             (cond ((integerp src)
 919                    (emit-byte-with-reg segment
 920                                        (if (eq size :byte)
 921                                            #b10110
 922                                            #b10111)
 923                                        (reg-tn-encoding dst))
 924                    (emit-sized-immediate segment size src))
 925                   ((and (fixup-p src) (accumulator-p dst))
 926                    (emit-byte segment
 927                               (if (eq size :byte)
 928                                   #b10100000
 929                                   #b10100001))
 930                    (emit-absolute-fixup segment src))
 931                   (t
 932                    (emit-byte segment
 933                               (if (eq size :byte)
 934                                   #b10001010
 935                                   #b10001011))
 936                    (emit-ea segment src (reg-tn-encoding dst) t))))
 937            ((and (fixup-p dst) (accumulator-p src))
 938             (emit-byte segment (if (eq size :byte) #b10100010 #b10100011))
 939             (emit-absolute-fixup segment dst))
 940            ((integerp src)
 941             (emit-byte segment (if (eq size :byte) #b11000110 #b11000111))
 942             (emit-ea segment dst #b000)
 943             (emit-sized-immediate segment size src))
 944            ((register-p src)
 945             (emit-byte segment (if (eq size :byte) #b10001000 #b10001001))
 946             (emit-ea segment dst (reg-tn-encoding src)))
 947            ((fixup-p src)
 948             (aver (eq size :dword))
 949             (emit-byte segment #b11000111)
 950             (emit-ea segment dst #b000)
 951             (emit-absolute-fixup segment src))
 952            (t
 953             (error "bogus arguments to MOV: ~S ~S" dst src))))))
 954
 955 (defun emit-move-with-extension (segment dst src opcode)
 956   (aver (register-p dst))
 957   (let ((dst-size (operand-size dst))
 958         (src-size (operand-size src)))
 959     (ecase dst-size
 960       (:word
 961        (aver (eq src-size :byte))
 962        (maybe-emit-operand-size-prefix segment :word)
 963        (emit-byte segment #b00001111)
 964        (emit-byte segment opcode)
 965        (emit-ea segment src (reg-tn-encoding dst)))
 966       (:dword
 967        (ecase src-size
 968          (:byte
 969           (maybe-emit-operand-size-prefix segment :dword)
 970           (emit-byte segment #b00001111)
 971           (emit-byte segment opcode)
 972           (emit-ea segment src (reg-tn-encoding dst)))
 973          (:word
 974           (emit-byte segment #b00001111)
 975           (emit-byte segment (logior opcode 1))
 976           (emit-ea segment src (reg-tn-encoding dst))))))))
 977
 978 (define-instruction movsx (segment dst src)
 979   (:printer ext-reg-reg/mem ((op #b1011111) (reg nil :type 'word-reg)))
 980   (:emitter (emit-move-with-extension segment dst src #b10111110)))
 981
 982 (define-instruction movzx (segment dst src)
 983   (:printer ext-reg-reg/mem ((op #b1011011) (reg nil :type 'word-reg)))
 984   (:emitter (emit-move-with-extension segment dst src #b10110110)))
 985
 986 (define-instruction push (segment src)
 987   ;; register
 988   (:printer reg-no-width ((op #b01010)))
 989   ;; register/memory
 990   (:printer reg/mem ((op '(#b1111111 #b110)) (width 1)))
 991   ;; immediate
 992   (:printer byte ((op #b01101010) (imm nil :type 'signed-imm-byte))
 993             '(:name :tab imm))
 994   (:printer byte ((op #b01101000) (imm nil :type 'imm-word))
 995             '(:name :tab imm))
 996   ;; ### segment registers?
 997
 998   (:emitter
 999    (cond ((integerp src)
1000           (cond ((<= -128 src 127)
1001                  (emit-byte segment #b01101010)
1002                  (emit-byte segment src))
1003                 (t
1004                  (emit-byte segment #b01101000)
1005                  (emit-dword segment src))))
1006          ((fixup-p src)
1007           ;; Interpret the fixup as an immediate dword to push.
1008           (emit-byte segment #b01101000)
1009           (emit-absolute-fixup segment src))
1010          (t
1011           (let ((size (operand-size src)))
1012             (aver (not (eq size :byte)))
1013             (maybe-emit-operand-size-prefix segment size)
1014             (cond ((register-p src)
1015                    (emit-byte-with-reg segment #b01010 (reg-tn-encoding src)))
1016                   (t
1017                    (emit-byte segment #b11111111)
1018                    (emit-ea segment src #b110 t))))))))
1019
1020 (define-instruction pusha (segment)
1021   (:printer byte ((op #b01100000)))
1022   (:emitter
1023    (emit-byte segment #b01100000)))
1024
1025 (define-instruction pop (segment dst)
1026   (:printer reg-no-width ((op #b01011)))
1027   (:printer reg/mem ((op '(#b1000111 #b000)) (width 1)))
1028   (:emitter
1029    (let ((size (operand-size dst)))
1030      (aver (not (eq size :byte)))
1031      (maybe-emit-operand-size-prefix segment size)
1032      (cond ((register-p dst)
1033             (emit-byte-with-reg segment #b01011 (reg-tn-encoding dst)))
1034            (t
1035             (emit-byte segment #b10001111)
1036             (emit-ea segment dst #b000))))))
1037
1038 (define-instruction popa (segment)
1039   (:printer byte ((op #b01100001)))
1040   (:emitter
1041    (emit-byte segment #b01100001)))
1042
1043 (define-instruction xchg (segment operand1 operand2)
1044   ;; Register with accumulator.
1045   (:printer reg-no-width ((op #b10010)) '(:name :tab accum ", " reg))
1046   ;; Register/Memory with Register.
1047   (:printer reg-reg/mem ((op #b1000011)))
1048   (:emitter
1049    (let ((size (matching-operand-size operand1 operand2)))
1050      (maybe-emit-operand-size-prefix segment size)
1051      (labels ((xchg-acc-with-something (acc something)
1052                 (if (and (not (eq size :byte)) (register-p something))
1053                     (emit-byte-with-reg segment
1054                                         #b10010
1055                                         (reg-tn-encoding something))
1056                     (xchg-reg-with-something acc something)))
1057               (xchg-reg-with-something (reg something)
1058                 (emit-byte segment (if (eq size :byte) #b10000110 #b10000111))
1059                 (emit-ea segment something (reg-tn-encoding reg))))
1060        (cond ((accumulator-p operand1)
1061               (xchg-acc-with-something operand1 operand2))
1062              ((accumulator-p operand2)
1063               (xchg-acc-with-something operand2 operand1))
1064              ((register-p operand1)
1065               (xchg-reg-with-something operand1 operand2))
1066              ((register-p operand2)
1067               (xchg-reg-with-something operand2 operand1))
1068              (t
1069               (error "bogus args to XCHG: ~S ~S" operand1 operand2)))))))
1070
1071 (define-instruction lea (segment dst src)
1072   (:printer reg-reg/mem ((op #b1000110) (width 1)))
1073   (:emitter
1074    (aver (dword-reg-p dst))
1075    (emit-byte segment #b10001101)
1076    (emit-ea segment src (reg-tn-encoding dst))))
1077
1078 (define-instruction cmpxchg (segment dst src)
1079   ;; Register/Memory with Register.
1080   (:printer ext-reg-reg/mem ((op #b1011000)) '(:name :tab reg/mem ", " reg))
1081   (:emitter
1082    (aver (register-p src))
1083    (let ((size (matching-operand-size src dst)))
1084      (maybe-emit-operand-size-prefix segment size)
1085      (emit-byte segment #b00001111)
1086      (emit-byte segment (if (eq size :byte) #b10110000 #b10110001))
1087      (emit-ea segment dst (reg-tn-encoding src)))))
1088
1089 \f
1090
1091 (define-instruction fs-segment-prefix (segment)
1092   (:emitter
1093    (emit-byte segment #x64)))
1094
1095 ;;;; flag control instructions
1096
1097 ;;; CLC -- Clear Carry Flag.
1098 (define-instruction clc (segment)
1099   (:printer byte ((op #b11111000)))
1100   (:emitter
1101    (emit-byte segment #b11111000)))
1102
1103 ;;; CLD -- Clear Direction Flag.
1104 (define-instruction cld (segment)
1105   (:printer byte ((op #b11111100)))
1106   (:emitter
1107    (emit-byte segment #b11111100)))
1108
1109 ;;; CLI -- Clear Iterrupt Enable Flag.
1110 (define-instruction cli (segment)
1111   (:printer byte ((op #b11111010)))
1112   (:emitter
1113    (emit-byte segment #b11111010)))
1114
1115 ;;; CMC -- Complement Carry Flag.
1116 (define-instruction cmc (segment)
1117   (:printer byte ((op #b11110101)))
1118   (:emitter
1119    (emit-byte segment #b11110101)))
1120
1121 ;;; LAHF -- Load AH into flags.
1122 (define-instruction lahf (segment)
1123   (:printer byte ((op #b10011111)))
1124   (:emitter
1125    (emit-byte segment #b10011111)))
1126
1127 ;;; POPF -- Pop flags.
1128 (define-instruction popf (segment)
1129   (:printer byte ((op #b10011101)))
1130   (:emitter
1131    (emit-byte segment #b10011101)))
1132
1133 ;;; PUSHF -- push flags.
1134 (define-instruction pushf (segment)
1135   (:printer byte ((op #b10011100)))
1136   (:emitter
1137    (emit-byte segment #b10011100)))
1138
1139 ;;; SAHF -- Store AH into flags.
1140 (define-instruction sahf (segment)
1141   (:printer byte ((op #b10011110)))
1142   (:emitter
1143    (emit-byte segment #b10011110)))
1144
1145 ;;; STC -- Set Carry Flag.
1146 (define-instruction stc (segment)
1147   (:printer byte ((op #b11111001)))
1148   (:emitter
1149    (emit-byte segment #b11111001)))
1150
1151 ;;; STD -- Set Direction Flag.
1152 (define-instruction std (segment)
1153   (:printer byte ((op #b11111101)))
1154   (:emitter
1155    (emit-byte segment #b11111101)))
1156
1157 ;;; STI -- Set Interrupt Enable Flag.
1158 (define-instruction sti (segment)
1159   (:printer byte ((op #b11111011)))
1160   (:emitter
1161    (emit-byte segment #b11111011)))
1162 \f
1163 ;;;; arithmetic
1164
1165 (defun emit-random-arith-inst (name segment dst src opcode
1166                                     &optional allow-constants)
1167   (let ((size (matching-operand-size dst src)))
1168     (maybe-emit-operand-size-prefix segment size)
1169     (cond
1170      ((integerp src)
1171       (cond ((and (not (eq size :byte)) (<= -128 src 127))
1172              (emit-byte segment #b10000011)
1173              (emit-ea segment dst opcode allow-constants)
1174              (emit-byte segment src))
1175             ((accumulator-p dst)
1176              (emit-byte segment
1177                         (dpb opcode
1178                              (byte 3 3)
1179                              (if (eq size :byte)
1180                                  #b00000100
1181                                  #b00000101)))
1182              (emit-sized-immediate segment size src))
1183             (t
1184              (emit-byte segment (if (eq size :byte) #b10000000 #b10000001))
1185              (emit-ea segment dst opcode allow-constants)
1186              (emit-sized-immediate segment size src))))
1187      ((register-p src)
1188       (emit-byte segment
1189                  (dpb opcode
1190                       (byte 3 3)
1191                       (if (eq size :byte) #b00000000 #b00000001)))
1192       (emit-ea segment dst (reg-tn-encoding src) allow-constants))
1193      ((register-p dst)
1194       (emit-byte segment
1195                  (dpb opcode
1196                       (byte 3 3)
1197                       (if (eq size :byte) #b00000010 #b00000011)))
1198       (emit-ea segment src (reg-tn-encoding dst) allow-constants))
1199      (t
1200       (error "bogus operands to ~A" name)))))
1201
1202 (eval-when (:compile-toplevel :execute)
1203   (defun arith-inst-printer-list (subop)
1204     `((accum-imm ((op ,(dpb subop (byte 3 2) #b0000010))))
1205       (reg/mem-imm ((op (#b1000000 ,subop))))
1206       (reg/mem-imm ((op (#b1000001 ,subop))
1207                     (imm nil :type signed-imm-byte)))
1208       (reg-reg/mem-dir ((op ,(dpb subop (byte 3 1) #b000000))))))
1209   )
1210
1211 (define-instruction add (segment dst src)
1212   (:printer-list (arith-inst-printer-list #b000))
1213   (:emitter (emit-random-arith-inst "ADD" segment dst src #b000)))
1214
1215 (define-instruction adc (segment dst src)
1216   (:printer-list (arith-inst-printer-list #b010))
1217   (:emitter (emit-random-arith-inst "ADC" segment dst src #b010)))
1218
1219 (define-instruction sub (segment dst src)
1220   (:printer-list (arith-inst-printer-list #b101))
1221   (:emitter (emit-random-arith-inst "SUB" segment dst src #b101)))
1222
1223 (define-instruction sbb (segment dst src)
1224   (:printer-list (arith-inst-printer-list #b011))
1225   (:emitter (emit-random-arith-inst "SBB" segment dst src #b011)))
1226
1227 (define-instruction cmp (segment dst src)
1228   (:printer-list (arith-inst-printer-list #b111))
1229   (:emitter (emit-random-arith-inst "CMP" segment dst src #b111 t)))
1230
1231 (define-instruction inc (segment dst)
1232   ;; Register.
1233   (:printer reg-no-width ((op #b01000)))
1234   ;; Register/Memory
1235   (:printer reg/mem ((op '(#b1111111 #b000))))
1236   (:emitter
1237    (let ((size (operand-size dst)))
1238      (maybe-emit-operand-size-prefix segment size)
1239      (cond ((and (not (eq size :byte)) (register-p dst))
1240             (emit-byte-with-reg segment #b01000 (reg-tn-encoding dst)))
1241            (t
1242             (emit-byte segment (if (eq size :byte) #b11111110 #b11111111))
1243             (emit-ea segment dst #b000))))))
1244
1245 (define-instruction dec (segment dst)
1246   ;; Register.
1247   (:printer reg-no-width ((op #b01001)))
1248   ;; Register/Memory
1249   (:printer reg/mem ((op '(#b1111111 #b001))))
1250   (:emitter
1251    (let ((size (operand-size dst)))
1252      (maybe-emit-operand-size-prefix segment size)
1253      (cond ((and (not (eq size :byte)) (register-p dst))
1254             (emit-byte-with-reg segment #b01001 (reg-tn-encoding dst)))
1255            (t
1256             (emit-byte segment (if (eq size :byte) #b11111110 #b11111111))
1257             (emit-ea segment dst #b001))))))
1258
1259 (define-instruction neg (segment dst)
1260   (:printer reg/mem ((op '(#b1111011 #b011))))
1261   (:emitter
1262    (let ((size (operand-size dst)))
1263      (maybe-emit-operand-size-prefix segment size)
1264      (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
1265      (emit-ea segment dst #b011))))
1266
1267 (define-instruction aaa (segment)
1268   (:printer byte ((op #b00110111)))
1269   (:emitter
1270    (emit-byte segment #b00110111)))
1271
1272 (define-instruction aas (segment)
1273   (:printer byte ((op #b00111111)))
1274   (:emitter
1275    (emit-byte segment #b00111111)))
1276
1277 (define-instruction daa (segment)
1278   (:printer byte ((op #b00100111)))
1279   (:emitter
1280    (emit-byte segment #b00100111)))
1281
1282 (define-instruction das (segment)
1283   (:printer byte ((op #b00101111)))
1284   (:emitter
1285    (emit-byte segment #b00101111)))
1286
1287 (define-instruction mul (segment dst src)
1288   (:printer accum-reg/mem ((op '(#b1111011 #b100))))
1289   (:emitter
1290    (let ((size (matching-operand-size dst src)))
1291      (aver (accumulator-p dst))
1292      (maybe-emit-operand-size-prefix segment size)
1293      (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
1294      (emit-ea segment src #b100))))
1295
1296 (define-instruction imul (segment dst &optional src1 src2)
1297   (:printer accum-reg/mem ((op '(#b1111011 #b101))))
1298   (:printer ext-reg-reg/mem ((op #b1010111)))
1299   (:printer reg-reg/mem ((op #b0110100) (width 1)
1300                          (imm nil :type 'signed-imm-word))
1301             '(:name :tab reg ", " reg/mem ", " imm))
1302   (:printer reg-reg/mem ((op #b0110101) (width 1)
1303                          (imm nil :type 'signed-imm-byte))
1304             '(:name :tab reg ", " reg/mem ", " imm))
1305   (:emitter
1306    (flet ((r/m-with-immed-to-reg (reg r/m immed)
1307             (let* ((size (matching-operand-size reg r/m))
1308                    (sx (and (not (eq size :byte)) (<= -128 immed 127))))
1309               (maybe-emit-operand-size-prefix segment size)
1310               (emit-byte segment (if sx #b01101011 #b01101001))
1311               (emit-ea segment r/m (reg-tn-encoding reg))
1312               (if sx
1313                   (emit-byte segment immed)
1314                   (emit-sized-immediate segment size immed)))))
1315      (cond (src2
1316             (r/m-with-immed-to-reg dst src1 src2))
1317            (src1
1318             (if (integerp src1)
1319                 (r/m-with-immed-to-reg dst dst src1)
1320                 (let ((size (matching-operand-size dst src1)))
1321                   (maybe-emit-operand-size-prefix segment size)
1322                   (emit-byte segment #b00001111)
1323                   (emit-byte segment #b10101111)
1324                   (emit-ea segment src1 (reg-tn-encoding dst)))))
1325            (t
1326             (let ((size (operand-size dst)))
1327               (maybe-emit-operand-size-prefix segment size)
1328               (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
1329               (emit-ea segment dst #b101)))))))
1330
1331 (define-instruction div (segment dst src)
1332   (:printer accum-reg/mem ((op '(#b1111011 #b110))))
1333   (:emitter
1334    (let ((size (matching-operand-size dst src)))
1335      (aver (accumulator-p dst))
1336      (maybe-emit-operand-size-prefix segment size)
1337      (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
1338      (emit-ea segment src #b110))))
1339
1340 (define-instruction idiv (segment dst src)
1341   (:printer accum-reg/mem ((op '(#b1111011 #b111))))
1342   (:emitter
1343    (let ((size (matching-operand-size dst src)))
1344      (aver (accumulator-p dst))
1345      (maybe-emit-operand-size-prefix segment size)
1346      (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
1347      (emit-ea segment src #b111))))
1348
1349 (define-instruction aad (segment)
1350   (:printer two-bytes ((op '(#b11010101 #b00001010))))
1351   (:emitter
1352    (emit-byte segment #b11010101)
1353    (emit-byte segment #b00001010)))
1354
1355 (define-instruction aam (segment)
1356   (:printer two-bytes ((op '(#b11010100 #b00001010))))
1357   (:emitter
1358    (emit-byte segment #b11010100)
1359    (emit-byte segment #b00001010)))
1360
1361 ;;; CBW -- Convert Byte to Word. AX <- sign_xtnd(AL)
1362 (define-instruction cbw (segment)
1363   (:emitter
1364    (maybe-emit-operand-size-prefix segment :word)
1365    (emit-byte segment #b10011000)))
1366
1367 ;;; CWDE -- Convert Word To Double Word Extened. EAX <- sign_xtnd(AX)
1368 (define-instruction cwde (segment)
1369   (:emitter
1370    (maybe-emit-operand-size-prefix segment :dword)
1371    (emit-byte segment #b10011000)))
1372
1373 ;;; CWD -- Convert Word to Double Word. DX:AX <- sign_xtnd(AX)
1374 (define-instruction cwd (segment)
1375   (:emitter
1376    (maybe-emit-operand-size-prefix segment :word)
1377    (emit-byte segment #b10011001)))
1378
1379 ;;; CDQ -- Convert Double Word to Quad Word. EDX:EAX <- sign_xtnd(EAX)
1380 (define-instruction cdq (segment)
1381   (:printer byte ((op #b10011001)))
1382   (:emitter
1383    (maybe-emit-operand-size-prefix segment :dword)
1384    (emit-byte segment #b10011001)))
1385
1386 (define-instruction xadd (segment dst src)
1387   ;; Register/Memory with Register.
1388   (:printer ext-reg-reg/mem ((op #b1100000)) '(:name :tab reg/mem ", " reg))
1389   (:emitter
1390    (aver (register-p src))
1391    (let ((size (matching-operand-size src dst)))
1392      (maybe-emit-operand-size-prefix segment size)
1393      (emit-byte segment #b00001111)
1394      (emit-byte segment (if (eq size :byte) #b11000000 #b11000001))
1395      (emit-ea segment dst (reg-tn-encoding src)))))
1396
1397 \f
1398 ;;;; logic
1399
1400 (defun emit-shift-inst (segment dst amount opcode)
1401   (let ((size (operand-size dst)))
1402     (maybe-emit-operand-size-prefix segment size)
1403     (multiple-value-bind (major-opcode immed)
1404         (case amount
1405           (:cl (values #b11010010 nil))
1406           (1 (values #b11010000 nil))
1407           (t (values #b11000000 t)))
1408       (emit-byte segment
1409                  (if (eq size :byte) major-opcode (logior major-opcode 1)))
1410       (emit-ea segment dst opcode)
1411       (when immed
1412         (emit-byte segment amount)))))
1413
1414 (eval-when (:compile-toplevel :execute)
1415   (defun shift-inst-printer-list (subop)
1416     `((reg/mem ((op (#b1101000 ,subop)))
1417                (:name :tab reg/mem ", 1"))
1418       (reg/mem ((op (#b1101001 ,subop)))
1419                (:name :tab reg/mem ", " 'cl))
1420       (reg/mem-imm ((op (#b1100000 ,subop))
1421                     (imm nil :type signed-imm-byte))))))
1422
1423 (define-instruction rol (segment dst amount)
1424   (:printer-list
1425    (shift-inst-printer-list #b000))
1426   (:emitter
1427    (emit-shift-inst segment dst amount #b000)))
1428
1429 (define-instruction ror (segment dst amount)
1430   (:printer-list
1431    (shift-inst-printer-list #b001))
1432   (:emitter
1433    (emit-shift-inst segment dst amount #b001)))
1434
1435 (define-instruction rcl (segment dst amount)
1436   (:printer-list
1437    (shift-inst-printer-list #b010))
1438   (:emitter
1439    (emit-shift-inst segment dst amount #b010)))
1440
1441 (define-instruction rcr (segment dst amount)
1442   (:printer-list
1443    (shift-inst-printer-list #b011))
1444   (:emitter
1445    (emit-shift-inst segment dst amount #b011)))
1446
1447 (define-instruction shl (segment dst amount)
1448   (:printer-list
1449    (shift-inst-printer-list #b100))
1450   (:emitter
1451    (emit-shift-inst segment dst amount #b100)))
1452
1453 (define-instruction shr (segment dst amount)
1454   (:printer-list
1455    (shift-inst-printer-list #b101))
1456   (:emitter
1457    (emit-shift-inst segment dst amount #b101)))
1458
1459 (define-instruction sar (segment dst amount)
1460   (:printer-list
1461    (shift-inst-printer-list #b111))
1462   (:emitter
1463    (emit-shift-inst segment dst amount #b111)))
1464
1465 (defun emit-double-shift (segment opcode dst src amt)
1466   (let ((size (matching-operand-size dst src)))
1467     (when (eq size :byte)
1468       (error "Double shifts can only be used with words."))
1469     (maybe-emit-operand-size-prefix segment size)
1470     (emit-byte segment #b00001111)
1471     (emit-byte segment (dpb opcode (byte 1 3)
1472                             (if (eq amt :cl) #b10100101 #b10100100)))
1473     #+nil
1474     (emit-ea segment dst src)
1475     (emit-ea segment dst (reg-tn-encoding src)) ; pw tries this
1476     (unless (eq amt :cl)
1477       (emit-byte segment amt))))
1478
1479 (eval-when (:compile-toplevel :execute)
1480   (defun double-shift-inst-printer-list (op)
1481     `(#+nil
1482       (ext-reg-reg/mem-imm ((op ,(logior op #b10))
1483                             (imm nil :type signed-imm-byte)))
1484       (ext-reg-reg/mem ((op ,(logior op #b10)))
1485          (:name :tab reg/mem ", " reg ", " 'cl)))))
1486
1487 (define-instruction shld (segment dst src amt)
1488   (:declare (type (or (member :cl) (mod 32)) amt))
1489   (:printer-list (double-shift-inst-printer-list #b1010000))
1490   (:emitter
1491    (emit-double-shift segment #b0 dst src amt)))
1492
1493 (define-instruction shrd (segment dst src amt)
1494   (:declare (type (or (member :cl) (mod 32)) amt))
1495   (:printer-list (double-shift-inst-printer-list #b1010100))
1496   (:emitter
1497    (emit-double-shift segment #b1 dst src amt)))
1498
1499 (define-instruction and (segment dst src)
1500   (:printer-list
1501    (arith-inst-printer-list #b100))
1502   (:emitter
1503    (emit-random-arith-inst "AND" segment dst src #b100)))
1504
1505 (define-instruction test (segment this that)
1506   (:printer accum-imm ((op #b1010100)))
1507   (:printer reg/mem-imm ((op '(#b1111011 #b000))))
1508   (:printer reg-reg/mem ((op #b1000010)))
1509   (:emitter
1510    (let ((size (matching-operand-size this that)))
1511      (maybe-emit-operand-size-prefix segment size)
1512      (flet ((test-immed-and-something (immed something)
1513               (cond ((accumulator-p something)
1514                      (emit-byte segment
1515                                 (if (eq size :byte) #b10101000 #b10101001))
1516                      (emit-sized-immediate segment size immed))
1517                     (t
1518                      (emit-byte segment
1519                                 (if (eq size :byte) #b11110110 #b11110111))
1520                      (emit-ea segment something #b000)
1521                      (emit-sized-immediate segment size immed))))
1522             (test-reg-and-something (reg something)
1523               (emit-byte segment (if (eq size :byte) #b10000100 #b10000101))
1524               (emit-ea segment something (reg-tn-encoding reg))))
1525        (cond ((integerp that)
1526               (test-immed-and-something that this))
1527              ((integerp this)
1528               (test-immed-and-something this that))
1529              ((register-p this)
1530               (test-reg-and-something this that))
1531              ((register-p that)
1532               (test-reg-and-something that this))
1533              (t
1534               (error "bogus operands for TEST: ~S and ~S" this that)))))))
1535
1536 (define-instruction or (segment dst src)
1537   (:printer-list
1538    (arith-inst-printer-list #b001))
1539   (:emitter
1540    (emit-random-arith-inst "OR" segment dst src #b001)))
1541
1542 (define-instruction xor (segment dst src)
1543   (:printer-list
1544    (arith-inst-printer-list #b110))
1545   (:emitter
1546    (emit-random-arith-inst "XOR" segment dst src #b110)))
1547
1548 (define-instruction not (segment dst)
1549   (:printer reg/mem ((op '(#b1111011 #b010))))
1550   (:emitter
1551    (let ((size (operand-size dst)))
1552      (maybe-emit-operand-size-prefix segment size)
1553      (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
1554      (emit-ea segment dst #b010))))
1555 \f
1556 ;;;; string manipulation
1557
1558 (define-instruction cmps (segment size)
1559   (:printer string-op ((op #b1010011)))
1560   (:emitter
1561    (maybe-emit-operand-size-prefix segment size)
1562    (emit-byte segment (if (eq size :byte) #b10100110 #b10100111))))
1563
1564 (define-instruction ins (segment acc)
1565   (:printer string-op ((op #b0110110)))
1566   (:emitter
1567    (let ((size (operand-size acc)))
1568      (aver (accumulator-p acc))
1569      (maybe-emit-operand-size-prefix segment size)
1570      (emit-byte segment (if (eq size :byte) #b01101100 #b01101101)))))
1571
1572 (define-instruction lods (segment acc)
1573   (:printer string-op ((op #b1010110)))
1574   (:emitter
1575    (let ((size (operand-size acc)))
1576      (aver (accumulator-p acc))
1577      (maybe-emit-operand-size-prefix segment size)
1578      (emit-byte segment (if (eq size :byte) #b10101100 #b10101101)))))
1579
1580 (define-instruction movs (segment size)
1581   (:printer string-op ((op #b1010010)))
1582   (:emitter
1583    (maybe-emit-operand-size-prefix segment size)
1584    (emit-byte segment (if (eq size :byte) #b10100100 #b10100101))))
1585
1586 (define-instruction outs (segment acc)
1587   (:printer string-op ((op #b0110111)))
1588   (:emitter
1589    (let ((size (operand-size acc)))
1590      (aver (accumulator-p acc))
1591      (maybe-emit-operand-size-prefix segment size)
1592      (emit-byte segment (if (eq size :byte) #b01101110 #b01101111)))))
1593
1594 (define-instruction scas (segment acc)
1595   (:printer string-op ((op #b1010111)))
1596   (:emitter
1597    (let ((size (operand-size acc)))
1598      (aver (accumulator-p acc))
1599      (maybe-emit-operand-size-prefix segment size)
1600      (emit-byte segment (if (eq size :byte) #b10101110 #b10101111)))))
1601
1602 (define-instruction stos (segment acc)
1603   (:printer string-op ((op #b1010101)))
1604   (:emitter
1605    (let ((size (operand-size acc)))
1606      (aver (accumulator-p acc))
1607      (maybe-emit-operand-size-prefix segment size)
1608      (emit-byte segment (if (eq size :byte) #b10101010 #b10101011)))))
1609
1610 (define-instruction xlat (segment)
1611   (:printer byte ((op #b11010111)))
1612   (:emitter
1613    (emit-byte segment #b11010111)))
1614
1615 (define-instruction rep (segment)
1616   (:emitter
1617    (emit-byte segment #b11110010)))
1618
1619 (define-instruction repe (segment)
1620   (:printer byte ((op #b11110011)))
1621   (:emitter
1622    (emit-byte segment #b11110011)))
1623
1624 (define-instruction repne (segment)
1625   (:printer byte ((op #b11110010)))
1626   (:emitter
1627    (emit-byte segment #b11110010)))
1628
1629 \f
1630 ;;;; bit manipulation
1631
1632 (define-instruction bsf (segment dst src)
1633   (:printer ext-reg-reg/mem ((op #b1011110) (width 0)))
1634   (:emitter
1635    (let ((size (matching-operand-size dst src)))
1636      (when (eq size :byte)
1637        (error "can't scan bytes: ~S" src))
1638      (maybe-emit-operand-size-prefix segment size)
1639      (emit-byte segment #b00001111)
1640      (emit-byte segment #b10111100)
1641      (emit-ea segment src (reg-tn-encoding dst)))))
1642
1643 (define-instruction bsr (segment dst src)
1644   (:printer ext-reg-reg/mem ((op #b1011110) (width 1)))
1645   (:emitter
1646    (let ((size (matching-operand-size dst src)))
1647      (when (eq size :byte)
1648        (error "can't scan bytes: ~S" src))
1649      (maybe-emit-operand-size-prefix segment size)
1650      (emit-byte segment #b00001111)
1651      (emit-byte segment #b10111101)
1652      (emit-ea segment src (reg-tn-encoding dst)))))
1653
1654 (defun emit-bit-test-and-mumble (segment src index opcode)
1655   (let ((size (operand-size src)))
1656     (when (eq size :byte)
1657       (error "can't scan bytes: ~S" src))
1658     (maybe-emit-operand-size-prefix segment size)
1659     (emit-byte segment #b00001111)
1660     (cond ((integerp index)
1661            (emit-byte segment #b10111010)
1662            (emit-ea segment src opcode)
1663            (emit-byte segment index))
1664           (t
1665            (emit-byte segment (dpb opcode (byte 3 3) #b10000011))
1666            (emit-ea segment src (reg-tn-encoding index))))))
1667
1668 (eval-when (:compile-toplevel :execute)
1669   (defun bit-test-inst-printer-list (subop)
1670     `((ext-reg/mem-imm ((op (#b1011101 ,subop))
1671                         (reg/mem nil :type word-reg/mem)
1672                         (imm nil :type imm-data)
1673                         (width 0)))
1674       (ext-reg-reg/mem ((op ,(dpb subop (byte 3 2) #b1000001))
1675                         (width 1))
1676                        (:name :tab reg/mem ", " reg)))))
1677
1678 (define-instruction bt (segment src index)
1679   (:printer-list (bit-test-inst-printer-list #b100))
1680   (:emitter
1681    (emit-bit-test-and-mumble segment src index #b100)))
1682
1683 (define-instruction btc (segment src index)
1684   (:printer-list (bit-test-inst-printer-list #b111))
1685   (:emitter
1686    (emit-bit-test-and-mumble segment src index #b111)))
1687
1688 (define-instruction btr (segment src index)
1689   (:printer-list (bit-test-inst-printer-list #b110))
1690   (:emitter
1691    (emit-bit-test-and-mumble segment src index #b110)))
1692
1693 (define-instruction bts (segment src index)
1694   (:printer-list (bit-test-inst-printer-list #b101))
1695   (:emitter
1696    (emit-bit-test-and-mumble segment src index #b101)))
1697
1698 \f
1699 ;;;; control transfer
1700
1701 (define-instruction call (segment where)
1702   (:printer near-jump ((op #b11101000)))
1703   (:printer reg/mem ((op '(#b1111111 #b010)) (width 1)))
1704   (:emitter
1705    (typecase where
1706      (label
1707       (emit-byte segment #b11101000)
1708       (emit-back-patch segment
1709                        4
1710                        (lambda (segment posn)
1711                          (emit-dword segment
1712                                      (- (label-position where)
1713                                         (+ posn 4))))))
1714      (fixup
1715       (emit-byte segment #b11101000)
1716       (emit-relative-fixup segment where))
1717      (t
1718       (emit-byte segment #b11111111)
1719       (emit-ea segment where #b010)))))
1720
1721 (defun emit-byte-displacement-backpatch (segment target)
1722   (emit-back-patch segment
1723                    1
1724                    (lambda (segment posn)
1725                      (let ((disp (- (label-position target) (1+ posn))))
1726                        (aver (<= -128 disp 127))
1727                        (emit-byte segment disp)))))
1728
1729 (define-instruction jmp (segment cond &optional where)
1730   ;; conditional jumps
1731   (:printer short-cond-jump ((op #b0111)) '('j cc :tab label))
1732   (:printer near-cond-jump () '('j cc :tab label))
1733   ;; unconditional jumps
1734   (:printer short-jump ((op #b1011)))
1735   (:printer near-jump ((op #b11101001)) )
1736   (:printer reg/mem ((op '(#b1111111 #b100)) (width 1)))
1737   (:emitter
1738    (cond (where
1739           (emit-chooser
1740            segment 6 2
1741            (lambda (segment posn delta-if-after)
1742              (let ((disp (- (label-position where posn delta-if-after)
1743                             (+ posn 2))))
1744                (when (<= -128 disp 127)
1745                  (emit-byte segment
1746                             (dpb (conditional-opcode cond)
1747                                  (byte 4 0)
1748                                  #b01110000))
1749                  (emit-byte-displacement-backpatch segment where)
1750                  t)))
1751            (lambda (segment posn)
1752              (let ((disp (- (label-position where) (+ posn 6))))
1753                (emit-byte segment #b00001111)
1754                (emit-byte segment
1755                           (dpb (conditional-opcode cond)
1756                                (byte 4 0)
1757                                #b10000000))
1758                (emit-dword segment disp)))))
1759          ((label-p (setq where cond))
1760           (emit-chooser
1761            segment 5 0
1762            (lambda (segment posn delta-if-after)
1763              (let ((disp (- (label-position where posn delta-if-after)
1764                             (+ posn 2))))
1765                (when (<= -128 disp 127)
1766                  (emit-byte segment #b11101011)
1767                  (emit-byte-displacement-backpatch segment where)
1768                  t)))
1769            (lambda (segment posn)
1770              (let ((disp (- (label-position where) (+ posn 5))))
1771                (emit-byte segment #b11101001)
1772                (emit-dword segment disp)))))
1773          ((fixup-p where)
1774           (emit-byte segment #b11101001)
1775           (emit-relative-fixup segment where))
1776          (t
1777           (unless (or (ea-p where) (tn-p where))
1778                   (error "don't know what to do with ~A" where))
1779           (emit-byte segment #b11111111)
1780           (emit-ea segment where #b100)))))
1781
1782 (define-instruction jmp-short (segment label)
1783   (:emitter
1784    (emit-byte segment #b11101011)
1785    (emit-byte-displacement-backpatch segment label)))
1786
1787 (define-instruction ret (segment &optional stack-delta)
1788   (:printer byte ((op #b11000011)))
1789   (:printer byte ((op #b11000010) (imm nil :type 'imm-word-16))
1790             '(:name :tab imm))
1791   (:emitter
1792    (cond (stack-delta
1793           (emit-byte segment #b11000010)
1794           (emit-word segment stack-delta))
1795          (t
1796           (emit-byte segment #b11000011)))))
1797
1798 (define-instruction jecxz (segment target)
1799   (:printer short-jump ((op #b0011)))
1800   (:emitter
1801    (emit-byte segment #b11100011)
1802    (emit-byte-displacement-backpatch segment target)))
1803
1804 (define-instruction loop (segment target)
1805   (:printer short-jump ((op #b0010)))
1806   (:emitter
1807    (emit-byte segment #b11100010)       ; pfw this was 11100011, or jecxz!!!!
1808    (emit-byte-displacement-backpatch segment target)))
1809
1810 (define-instruction loopz (segment target)
1811   (:printer short-jump ((op #b0001)))
1812   (:emitter
1813    (emit-byte segment #b11100001)
1814    (emit-byte-displacement-backpatch segment target)))
1815
1816 (define-instruction loopnz (segment target)
1817   (:printer short-jump ((op #b0000)))
1818   (:emitter
1819    (emit-byte segment #b11100000)
1820    (emit-byte-displacement-backpatch segment target)))
1821 \f
1822 ;;;; conditional move
1823 (define-instruction cmov (segment cond dst src)
1824   (:printer cond-move ())
1825   (:emitter
1826    (aver (register-p dst))
1827    (let ((size (matching-operand-size dst src)))
1828      (aver (or (eq size :word) (eq size :dword)))
1829      (maybe-emit-operand-size-prefix segment size))
1830    (emit-byte segment #b00001111)
1831    (emit-byte segment (dpb (conditional-opcode cond) (byte 4 0) #b01000000))
1832    (emit-ea segment src (reg-tn-encoding dst))))
1833
1834 ;;;; conditional byte set
1835
1836 (define-instruction set (segment dst cond)
1837   (:printer cond-set ())
1838   (:emitter
1839    (emit-byte segment #b00001111)
1840    (emit-byte segment (dpb (conditional-opcode cond) (byte 4 0) #b10010000))
1841    (emit-ea segment dst #b000)))
1842 \f
1843 ;;;; enter/leave
1844
1845 (define-instruction enter (segment disp &optional (level 0))
1846   (:declare (type (unsigned-byte 16) disp)
1847             (type (unsigned-byte 8) level))
1848   (:printer enter-format ((op #b11001000)))
1849   (:emitter
1850    (emit-byte segment #b11001000)
1851    (emit-word segment disp)
1852    (emit-byte segment level)))
1853
1854 (define-instruction leave (segment)
1855   (:printer byte ((op #b11001001)))
1856   (:emitter
1857    (emit-byte segment #b11001001)))
1858 \f
1859 ;;;; prefetch
1860 (define-instruction prefetchnta (segment ea)
1861   (:printer prefetch ((op #b00011000) (reg #b000)))
1862   (:emitter
1863    (aver (typep ea 'ea))
1864    (aver (eq :byte (ea-size ea)))
1865    (emit-byte segment #b00001111)
1866    (emit-byte segment #b00011000)
1867    (emit-ea segment ea #b000)))
1868
1869 (define-instruction prefetcht0 (segment ea)
1870   (:printer prefetch ((op #b00011000) (reg #b001)))
1871   (:emitter
1872    (aver (typep ea 'ea))
1873    (aver (eq :byte (ea-size ea)))
1874    (emit-byte segment #b00001111)
1875    (emit-byte segment #b00011000)
1876    (emit-ea segment ea #b001)))
1877
1878 (define-instruction prefetcht1 (segment ea)
1879   (:printer prefetch ((op #b00011000) (reg #b010)))
1880   (:emitter
1881    (aver (typep ea 'ea))
1882    (aver (eq :byte (ea-size ea)))
1883    (emit-byte segment #b00001111)
1884    (emit-byte segment #b00011000)
1885    (emit-ea segment ea #b010)))
1886
1887 (define-instruction prefetcht2 (segment ea)
1888   (:printer prefetch ((op #b00011000) (reg #b011)))
1889   (:emitter
1890    (aver (typep ea 'ea))
1891    (aver (eq :byte (ea-size ea)))
1892    (emit-byte segment #b00001111)
1893    (emit-byte segment #b00011000)
1894    (emit-ea segment ea #b011)))
1895 \f
1896 ;;;; interrupt instructions
1897
1898 (defun snarf-error-junk (sap offset &optional length-only)
1899   (let* ((length (sb!sys:sap-ref-8 sap offset))
1900          (vector (make-array length :element-type '(unsigned-byte 8))))
1901     (declare (type sb!sys:system-area-pointer sap)
1902              (type (unsigned-byte 8) length)
1903              (type (simple-array (unsigned-byte 8) (*)) vector))
1904     (cond (length-only
1905            (values 0 (1+ length) nil nil))
1906           (t
1907            (sb!kernel:copy-ub8-from-system-area sap (1+ offset)
1908                                                 vector 0 length)
1909            (collect ((sc-offsets)
1910                      (lengths))
1911              (lengths 1)                ; the length byte
1912              (let* ((index 0)
1913                     (error-number (sb!c:read-var-integer vector index)))
1914                (lengths index)
1915                (loop
1916                  (when (>= index length)
1917                    (return))
1918                  (let ((old-index index))
1919                    (sc-offsets (sb!c:read-var-integer vector index))
1920                    (lengths (- index old-index))))
1921                (values error-number
1922                        (1+ length)
1923                        (sc-offsets)
1924                        (lengths))))))))
1925
1926 #|
1927 (defmacro break-cases (breaknum &body cases)
1928   (let ((bn-temp (gensym)))
1929     (collect ((clauses))
1930       (dolist (case cases)
1931         (clauses `((= ,bn-temp ,(car case)) ,@(cdr case))))
1932       `(let ((,bn-temp ,breaknum))
1933          (cond ,@(clauses))))))
1934 |#
1935
1936 (defun break-control (chunk inst stream dstate)
1937   (declare (ignore inst))
1938   (flet ((nt (x) (if stream (sb!disassem:note x dstate))))
1939     ;; FIXME: Make sure that BYTE-IMM-CODE is defined. The genesis
1940     ;; map has it undefined; and it should be easier to look in the target
1941     ;; Lisp (with (DESCRIBE 'BYTE-IMM-CODE)) than to definitively deduce
1942     ;; from first principles whether it's defined in some way that genesis
1943     ;; can't grok.
1944     (case (byte-imm-code chunk dstate)
1945       (#.error-trap
1946        (nt "error trap")
1947        (sb!disassem:handle-break-args #'snarf-error-junk stream dstate))
1948       (#.cerror-trap
1949        (nt "cerror trap")
1950        (sb!disassem:handle-break-args #'snarf-error-junk stream dstate))
1951       (#.breakpoint-trap
1952        (nt "breakpoint trap"))
1953       (#.pending-interrupt-trap
1954        (nt "pending interrupt trap"))
1955       (#.halt-trap
1956        (nt "halt trap"))
1957       (#.fun-end-breakpoint-trap
1958        (nt "function end breakpoint trap")))))
1959
1960 (define-instruction break (segment code)
1961   (:declare (type (unsigned-byte 8) code))
1962   (:printer byte-imm ((op #b11001100)) '(:name :tab code)
1963             :control #'break-control)
1964   (:emitter
1965    (emit-byte segment #b11001100)
1966    (emit-byte segment code)))
1967
1968 (define-instruction int (segment number)
1969   (:declare (type (unsigned-byte 8) number))
1970   (:printer byte-imm ((op #b11001101)))
1971   (:emitter
1972    (etypecase number
1973      ((member 3)
1974       (emit-byte segment #b11001100))
1975      ((unsigned-byte 8)
1976       (emit-byte segment #b11001101)
1977       (emit-byte segment number)))))
1978
1979 (define-instruction into (segment)
1980   (:printer byte ((op #b11001110)))
1981   (:emitter
1982    (emit-byte segment #b11001110)))
1983
1984 (define-instruction bound (segment reg bounds)
1985   (:emitter
1986    (let ((size (matching-operand-size reg bounds)))
1987      (when (eq size :byte)
1988        (error "can't bounds-test bytes: ~S" reg))
1989      (maybe-emit-operand-size-prefix segment size)
1990      (emit-byte segment #b01100010)
1991      (emit-ea segment bounds (reg-tn-encoding reg)))))
1992
1993 (define-instruction iret (segment)
1994   (:printer byte ((op #b11001111)))
1995   (:emitter
1996    (emit-byte segment #b11001111)))
1997 \f
1998 ;;;; processor control
1999
2000 (define-instruction hlt (segment)
2001   (:printer byte ((op #b11110100)))
2002   (:emitter
2003    (emit-byte segment #b11110100)))
2004
2005 (define-instruction nop (segment)
2006   (:printer byte ((op #b10010000)))
2007   (:emitter
2008    (emit-byte segment #b10010000)))
2009
2010 (define-instruction wait (segment)
2011   (:printer byte ((op #b10011011)))
2012   (:emitter
2013    (emit-byte segment #b10011011)))
2014
2015 (define-instruction lock (segment)
2016   (:printer byte ((op #b11110000)))
2017   (:emitter
2018    (emit-byte segment #b11110000)))
2019 \f
2020 ;;;; miscellaneous hackery
2021
2022 (define-instruction byte (segment byte)
2023   (:emitter
2024    (emit-byte segment byte)))
2025
2026 (define-instruction word (segment word)
2027   (:emitter
2028    (emit-word segment word)))
2029
2030 (define-instruction dword (segment dword)
2031   (:emitter
2032    (emit-dword segment dword)))
2033
2034 (defun emit-header-data (segment type)
2035   (emit-back-patch segment
2036                    4
2037                    (lambda (segment posn)
2038                      (emit-dword segment
2039                                  (logior type
2040                                          (ash (+ posn
2041                                                  (component-header-length))
2042                                               (- n-widetag-bits
2043                                                  word-shift)))))))
2044
2045 (define-instruction simple-fun-header-word (segment)
2046   (:emitter
2047    (emit-header-data segment simple-fun-header-widetag)))
2048
2049 (define-instruction lra-header-word (segment)
2050   (:emitter
2051    (emit-header-data segment return-pc-header-widetag)))
2052 \f
2053
2054 ;;;; SSE instructions
2055 ;;;;
2056 ;;;; Automatically generated
2057
2058
2059 (DEFINE-INSTRUCTION ADDPS
2060                     (SEGMENT DST SRC)
2061                     (:EMITTER (EMIT-BYTE SEGMENT 15)
2062                               (EMIT-BYTE SEGMENT 88)
2063                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2064
2065 (DEFINE-INSTRUCTION ADDSUBPS
2066                     (SEGMENT DST SRC)
2067                     (:EMITTER (EMIT-BYTE SEGMENT 242)
2068                               (EMIT-BYTE SEGMENT 15)
2069                               (EMIT-BYTE SEGMENT 208)
2070                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2071
2072 (DEFINE-INSTRUCTION ANDNPS
2073                     (SEGMENT DST SRC)
2074                     (:EMITTER (EMIT-BYTE SEGMENT 15)
2075                               (EMIT-BYTE SEGMENT 85)
2076                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2077
2078 (DEFINE-INSTRUCTION ANDPS
2079                     (SEGMENT DST SRC)
2080                     (:EMITTER (EMIT-BYTE SEGMENT 15)
2081                               (EMIT-BYTE SEGMENT 84)
2082                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2083
2084 (DEFINE-INSTRUCTION DIVPS
2085                     (SEGMENT DST SRC)
2086                     (:EMITTER (EMIT-BYTE SEGMENT 15)
2087                               (EMIT-BYTE SEGMENT 94)
2088                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2089
2090 (DEFINE-INSTRUCTION HADDPS
2091                     (SEGMENT DST SRC)
2092                     (:EMITTER (EMIT-BYTE SEGMENT 242)
2093                               (EMIT-BYTE SEGMENT 15)
2094                               (EMIT-BYTE SEGMENT 124)
2095                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2096
2097 (DEFINE-INSTRUCTION HSUBPS
2098                     (SEGMENT DST SRC)
2099                     (:EMITTER (EMIT-BYTE SEGMENT 242)
2100                               (EMIT-BYTE SEGMENT 15)
2101                               (EMIT-BYTE SEGMENT 125)
2102                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2103
2104 (DEFINE-INSTRUCTION MAXPS
2105                     (SEGMENT DST SRC)
2106                     (:EMITTER (EMIT-BYTE SEGMENT 15)
2107                               (EMIT-BYTE SEGMENT 95)
2108                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2109
2110 (DEFINE-INSTRUCTION MINPS
2111                     (SEGMENT DST SRC)
2112                     (:EMITTER (EMIT-BYTE SEGMENT 15)
2113                               (EMIT-BYTE SEGMENT 93)
2114                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2115
2116 (DEFINE-INSTRUCTION MULPS
2117                     (SEGMENT DST SRC)
2118                     (:EMITTER (EMIT-BYTE SEGMENT 15)
2119                               (EMIT-BYTE SEGMENT 89)
2120                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2121
2122 (DEFINE-INSTRUCTION ORPS
2123                     (SEGMENT DST SRC)
2124                     (:EMITTER (EMIT-BYTE SEGMENT 15)
2125                               (EMIT-BYTE SEGMENT 86)
2126                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2127
2128 (DEFINE-INSTRUCTION RCPPS
2129                     (SEGMENT DST SRC)
2130                     (:EMITTER (EMIT-BYTE SEGMENT 15)
2131                               (EMIT-BYTE SEGMENT 83)
2132                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2133
2134 (DEFINE-INSTRUCTION RSQRTPS
2135                     (SEGMENT DST SRC)
2136                     (:EMITTER (EMIT-BYTE SEGMENT 15)
2137                               (EMIT-BYTE SEGMENT 82)
2138                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2139
2140 (DEFINE-INSTRUCTION SQRTPS
2141                     (SEGMENT DST SRC)
2142                     (:EMITTER (EMIT-BYTE SEGMENT 15)
2143                               (EMIT-BYTE SEGMENT 81)
2144                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2145
2146 (DEFINE-INSTRUCTION SUBPS
2147                     (SEGMENT DST SRC)
2148                     (:EMITTER (EMIT-BYTE SEGMENT 15)
2149                               (EMIT-BYTE SEGMENT 92)
2150                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2151
2152 (DEFINE-INSTRUCTION UNPCKHPS
2153                     (SEGMENT DST SRC)
2154                     (:EMITTER (EMIT-BYTE SEGMENT 15)
2155                               (EMIT-BYTE SEGMENT 21)
2156                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2157
2158 (DEFINE-INSTRUCTION UNPCKLPS
2159                     (SEGMENT DST SRC)
2160                     (:EMITTER (EMIT-BYTE SEGMENT 15)
2161                               (EMIT-BYTE SEGMENT 20)
2162                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2163
2164 (DEFINE-INSTRUCTION XORPS
2165                     (SEGMENT DST SRC)
2166                     (:EMITTER (EMIT-BYTE SEGMENT 15)
2167                               (EMIT-BYTE SEGMENT 87)
2168                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2169
2170 (DEFINE-INSTRUCTION ADDPD
2171                     (SEGMENT DST SRC)
2172                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2173                               (EMIT-BYTE SEGMENT 15)
2174                               (EMIT-BYTE SEGMENT 88)
2175                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2176
2177 (DEFINE-INSTRUCTION ADDSUBPD
2178                     (SEGMENT DST SRC)
2179                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2180                               (EMIT-BYTE SEGMENT 15)
2181                               (EMIT-BYTE SEGMENT 208)
2182                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2183
2184 (DEFINE-INSTRUCTION ANDNPD
2185                     (SEGMENT DST SRC)
2186                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2187                               (EMIT-BYTE SEGMENT 15)
2188                               (EMIT-BYTE SEGMENT 85)
2189                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2190
2191 (DEFINE-INSTRUCTION ANDPD
2192                     (SEGMENT DST SRC)
2193                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2194                               (EMIT-BYTE SEGMENT 15)
2195                               (EMIT-BYTE SEGMENT 84)
2196                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2197
2198 (DEFINE-INSTRUCTION DIVPD
2199                     (SEGMENT DST SRC)
2200                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2201                               (EMIT-BYTE SEGMENT 15)
2202                               (EMIT-BYTE SEGMENT 94)
2203                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2204
2205 (DEFINE-INSTRUCTION HADDPD
2206                     (SEGMENT DST SRC)
2207                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2208                               (EMIT-BYTE SEGMENT 15)
2209                               (EMIT-BYTE SEGMENT 124)
2210                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2211
2212 (DEFINE-INSTRUCTION HSUBPD
2213                     (SEGMENT DST SRC)
2214                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2215                               (EMIT-BYTE SEGMENT 15)
2216                               (EMIT-BYTE SEGMENT 125)
2217                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2218
2219 (DEFINE-INSTRUCTION MAXPD
2220                     (SEGMENT DST SRC)
2221                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2222                               (EMIT-BYTE SEGMENT 15)
2223                               (EMIT-BYTE SEGMENT 95)
2224                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2225
2226 (DEFINE-INSTRUCTION MINPD
2227                     (SEGMENT DST SRC)
2228                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2229                               (EMIT-BYTE SEGMENT 15)
2230                               (EMIT-BYTE SEGMENT 93)
2231                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2232
2233 (DEFINE-INSTRUCTION MULPD
2234                     (SEGMENT DST SRC)
2235                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2236                               (EMIT-BYTE SEGMENT 15)
2237                               (EMIT-BYTE SEGMENT 89)
2238                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2239
2240 (DEFINE-INSTRUCTION ORPD
2241                     (SEGMENT DST SRC)
2242                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2243                               (EMIT-BYTE SEGMENT 15)
2244                               (EMIT-BYTE SEGMENT 86)
2245                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2246
2247 (DEFINE-INSTRUCTION SQRTPD
2248                     (SEGMENT DST SRC)
2249                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2250                               (EMIT-BYTE SEGMENT 15)
2251                               (EMIT-BYTE SEGMENT 81)
2252                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2253
2254 (DEFINE-INSTRUCTION SUBPD
2255                     (SEGMENT DST SRC)
2256                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2257                               (EMIT-BYTE SEGMENT 15)
2258                               (EMIT-BYTE SEGMENT 92)
2259                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2260
2261 (DEFINE-INSTRUCTION UNPCKHPD
2262                     (SEGMENT DST SRC)
2263                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2264                               (EMIT-BYTE SEGMENT 15)
2265                               (EMIT-BYTE SEGMENT 21)
2266                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2267
2268 (DEFINE-INSTRUCTION UNPCKLPD
2269                     (SEGMENT DST SRC)
2270                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2271                               (EMIT-BYTE SEGMENT 15)
2272                               (EMIT-BYTE SEGMENT 20)
2273                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2274
2275 (DEFINE-INSTRUCTION XORPD
2276                     (SEGMENT DST SRC)
2277                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2278                               (EMIT-BYTE SEGMENT 15)
2279                               (EMIT-BYTE SEGMENT 87)
2280                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2281
2282 (DEFINE-INSTRUCTION ADDSD
2283                     (SEGMENT DST SRC)
2284                     (:EMITTER (EMIT-BYTE SEGMENT 242)
2285                               (EMIT-BYTE SEGMENT 15)
2286                               (EMIT-BYTE SEGMENT 88)
2287                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2288
2289 (DEFINE-INSTRUCTION COMISD
2290                     (SEGMENT DST SRC)
2291                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2292                               (EMIT-BYTE SEGMENT 15)
2293                               (EMIT-BYTE SEGMENT 47)
2294                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2295
2296 (DEFINE-INSTRUCTION DIVSD
2297                     (SEGMENT DST SRC)
2298                     (:EMITTER (EMIT-BYTE SEGMENT 242)
2299                               (EMIT-BYTE SEGMENT 15)
2300                               (EMIT-BYTE SEGMENT 94)
2301                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2302
2303 (DEFINE-INSTRUCTION MAXSD
2304                     (SEGMENT DST SRC)
2305                     (:EMITTER (EMIT-BYTE SEGMENT 242)
2306                               (EMIT-BYTE SEGMENT 15)
2307                               (EMIT-BYTE SEGMENT 95)
2308                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2309
2310 (DEFINE-INSTRUCTION MINSD
2311                     (SEGMENT DST SRC)
2312                     (:EMITTER (EMIT-BYTE SEGMENT 242)
2313                               (EMIT-BYTE SEGMENT 15)
2314                               (EMIT-BYTE SEGMENT 93)
2315                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2316
2317 (DEFINE-INSTRUCTION MULSD
2318                     (SEGMENT DST SRC)
2319                     (:EMITTER (EMIT-BYTE SEGMENT 242)
2320                               (EMIT-BYTE SEGMENT 15)
2321                               (EMIT-BYTE SEGMENT 89)
2322                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2323
2324 (DEFINE-INSTRUCTION SQRTSD
2325                     (SEGMENT DST SRC)
2326                     (:EMITTER (EMIT-BYTE SEGMENT 242)
2327                               (EMIT-BYTE SEGMENT 15)
2328                               (EMIT-BYTE SEGMENT 81)
2329                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2330
2331 (DEFINE-INSTRUCTION SUBSD
2332                     (SEGMENT DST SRC)
2333                     (:EMITTER (EMIT-BYTE SEGMENT 242)
2334                               (EMIT-BYTE SEGMENT 15)
2335                               (EMIT-BYTE SEGMENT 92)
2336                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2337
2338 (DEFINE-INSTRUCTION UCOMISD
2339                     (SEGMENT DST SRC)
2340                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2341                               (EMIT-BYTE SEGMENT 15)
2342                               (EMIT-BYTE SEGMENT 46)
2343                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2344
2345 (DEFINE-INSTRUCTION ADDSS
2346                     (SEGMENT DST SRC)
2347                     (:EMITTER (EMIT-BYTE SEGMENT 243)
2348                               (EMIT-BYTE SEGMENT 15)
2349                               (EMIT-BYTE SEGMENT 88)
2350                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2351
2352 (DEFINE-INSTRUCTION COMISS
2353                     (SEGMENT DST SRC)
2354                     (:EMITTER (EMIT-BYTE SEGMENT 15)
2355                               (EMIT-BYTE SEGMENT 47)
2356                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2357
2358 (DEFINE-INSTRUCTION DIVSS
2359                     (SEGMENT DST SRC)
2360                     (:EMITTER (EMIT-BYTE SEGMENT 243)
2361                               (EMIT-BYTE SEGMENT 15)
2362                               (EMIT-BYTE SEGMENT 94)
2363                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2364
2365 (DEFINE-INSTRUCTION MAXSS
2366                     (SEGMENT DST SRC)
2367                     (:EMITTER (EMIT-BYTE SEGMENT 243)
2368                               (EMIT-BYTE SEGMENT 15)
2369                               (EMIT-BYTE SEGMENT 95)
2370                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2371
2372 (DEFINE-INSTRUCTION MINSS
2373                     (SEGMENT DST SRC)
2374                     (:EMITTER (EMIT-BYTE SEGMENT 243)
2375                               (EMIT-BYTE SEGMENT 15)
2376                               (EMIT-BYTE SEGMENT 93)
2377                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2378
2379 (DEFINE-INSTRUCTION MULSS
2380                     (SEGMENT DST SRC)
2381                     (:EMITTER (EMIT-BYTE SEGMENT 243)
2382                               (EMIT-BYTE SEGMENT 15)
2383                               (EMIT-BYTE SEGMENT 89)
2384                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2385
2386 (DEFINE-INSTRUCTION RCPSS
2387                     (SEGMENT DST SRC)
2388                     (:EMITTER (EMIT-BYTE SEGMENT 243)
2389                               (EMIT-BYTE SEGMENT 15)
2390                               (EMIT-BYTE SEGMENT 83)
2391                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2392
2393 (DEFINE-INSTRUCTION RSQRTSS
2394                     (SEGMENT DST SRC)
2395                     (:EMITTER (EMIT-BYTE SEGMENT 243)
2396                               (EMIT-BYTE SEGMENT 15)
2397                               (EMIT-BYTE SEGMENT 82)
2398                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2399
2400 (DEFINE-INSTRUCTION SQRTSS
2401                     (SEGMENT DST SRC)
2402                     (:EMITTER (EMIT-BYTE SEGMENT 243)
2403                               (EMIT-BYTE SEGMENT 15)
2404                               (EMIT-BYTE SEGMENT 81)
2405                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2406
2407 (DEFINE-INSTRUCTION SUBSS
2408                     (SEGMENT DST SRC)
2409                     (:EMITTER (EMIT-BYTE SEGMENT 243)
2410                               (EMIT-BYTE SEGMENT 15)
2411                               (EMIT-BYTE SEGMENT 92)
2412                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2413
2414 (DEFINE-INSTRUCTION UCOMISS
2415                     (SEGMENT DST SRC)
2416                     (:EMITTER (EMIT-BYTE SEGMENT 15)
2417                               (EMIT-BYTE SEGMENT 46)
2418                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2419
2420 (DEFINE-INSTRUCTION PACKSSDW
2421                     (SEGMENT DST SRC)
2422                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2423                               (EMIT-BYTE SEGMENT 15)
2424                               (EMIT-BYTE SEGMENT 107)
2425                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2426
2427 (DEFINE-INSTRUCTION PACKSSWB
2428                     (SEGMENT DST SRC)
2429                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2430                               (EMIT-BYTE SEGMENT 15)
2431                               (EMIT-BYTE SEGMENT 99)
2432                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2433
2434 (DEFINE-INSTRUCTION PACKUSWB
2435                     (SEGMENT DST SRC)
2436                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2437                               (EMIT-BYTE SEGMENT 15)
2438                               (EMIT-BYTE SEGMENT 103)
2439                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2440
2441 (DEFINE-INSTRUCTION PADDB
2442                     (SEGMENT DST SRC)
2443                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2444                               (EMIT-BYTE SEGMENT 15)
2445                               (EMIT-BYTE SEGMENT 252)
2446                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2447
2448 (DEFINE-INSTRUCTION PADDD
2449                     (SEGMENT DST SRC)
2450                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2451                               (EMIT-BYTE SEGMENT 15)
2452                               (EMIT-BYTE SEGMENT 254)
2453                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2454
2455 (DEFINE-INSTRUCTION PADDQ
2456                     (SEGMENT DST SRC)
2457                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2458                               (EMIT-BYTE SEGMENT 15)
2459                               (EMIT-BYTE SEGMENT 212)
2460                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2461
2462 (DEFINE-INSTRUCTION PADDSB
2463                     (SEGMENT DST SRC)
2464                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2465                               (EMIT-BYTE SEGMENT 15)
2466                               (EMIT-BYTE SEGMENT 236)
2467                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2468
2469 (DEFINE-INSTRUCTION PADDSW
2470                     (SEGMENT DST SRC)
2471                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2472                               (EMIT-BYTE SEGMENT 15)
2473                               (EMIT-BYTE SEGMENT 237)
2474                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2475
2476 (DEFINE-INSTRUCTION PADDUSB
2477                     (SEGMENT DST SRC)
2478                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2479                               (EMIT-BYTE SEGMENT 15)
2480                               (EMIT-BYTE SEGMENT 220)
2481                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2482
2483 (DEFINE-INSTRUCTION PADDUSW
2484                     (SEGMENT DST SRC)
2485                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2486                               (EMIT-BYTE SEGMENT 15)
2487                               (EMIT-BYTE SEGMENT 221)
2488                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2489
2490 (DEFINE-INSTRUCTION PADDW
2491                     (SEGMENT DST SRC)
2492                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2493                               (EMIT-BYTE SEGMENT 15)
2494                               (EMIT-BYTE SEGMENT 253)
2495                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2496
2497 (DEFINE-INSTRUCTION PAND
2498                     (SEGMENT DST SRC)
2499                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2500                               (EMIT-BYTE SEGMENT 15)
2501                               (EMIT-BYTE SEGMENT 219)
2502                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2503
2504 (DEFINE-INSTRUCTION PANDN
2505                     (SEGMENT DST SRC)
2506                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2507                               (EMIT-BYTE SEGMENT 15)
2508                               (EMIT-BYTE SEGMENT 223)
2509                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2510
2511 (DEFINE-INSTRUCTION PAVGB
2512                     (SEGMENT DST SRC)
2513                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2514                               (EMIT-BYTE SEGMENT 15)
2515                               (EMIT-BYTE SEGMENT 224)
2516                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2517
2518 (DEFINE-INSTRUCTION PAVGW
2519                     (SEGMENT DST SRC)
2520                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2521                               (EMIT-BYTE SEGMENT 15)
2522                               (EMIT-BYTE SEGMENT 227)
2523                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2524
2525 (DEFINE-INSTRUCTION PCMPEQB
2526                     (SEGMENT DST SRC)
2527                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2528                               (EMIT-BYTE SEGMENT 15)
2529                               (EMIT-BYTE SEGMENT 116)
2530                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2531
2532 (DEFINE-INSTRUCTION PCMPEQD
2533                     (SEGMENT DST SRC)
2534                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2535                               (EMIT-BYTE SEGMENT 15)
2536                               (EMIT-BYTE SEGMENT 118)
2537                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2538
2539 (DEFINE-INSTRUCTION PCMPEQW
2540                     (SEGMENT DST SRC)
2541                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2542                               (EMIT-BYTE SEGMENT 15)
2543                               (EMIT-BYTE SEGMENT 117)
2544                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2545
2546 (DEFINE-INSTRUCTION PCMPGTB
2547                     (SEGMENT DST SRC)
2548                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2549                               (EMIT-BYTE SEGMENT 15)
2550                               (EMIT-BYTE SEGMENT 100)
2551                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2552
2553 (DEFINE-INSTRUCTION PCMPGTD
2554                     (SEGMENT DST SRC)
2555                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2556                               (EMIT-BYTE SEGMENT 15)
2557                               (EMIT-BYTE SEGMENT 102)
2558                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2559
2560 (DEFINE-INSTRUCTION PCMPGTW
2561                     (SEGMENT DST SRC)
2562                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2563                               (EMIT-BYTE SEGMENT 15)
2564                               (EMIT-BYTE SEGMENT 101)
2565                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2566
2567 (DEFINE-INSTRUCTION PMADDWD
2568                     (SEGMENT DST SRC)
2569                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2570                               (EMIT-BYTE SEGMENT 15)
2571                               (EMIT-BYTE SEGMENT 245)
2572                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2573
2574 (DEFINE-INSTRUCTION PMAXSW
2575                     (SEGMENT DST SRC)
2576                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2577                               (EMIT-BYTE SEGMENT 15)
2578                               (EMIT-BYTE SEGMENT 238)
2579                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2580
2581 (DEFINE-INSTRUCTION PMAXUB
2582                     (SEGMENT DST SRC)
2583                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2584                               (EMIT-BYTE SEGMENT 15)
2585                               (EMIT-BYTE SEGMENT 222)
2586                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2587
2588 (DEFINE-INSTRUCTION PMINSW
2589                     (SEGMENT DST SRC)
2590                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2591                               (EMIT-BYTE SEGMENT 15)
2592                               (EMIT-BYTE SEGMENT 234)
2593                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2594
2595 (DEFINE-INSTRUCTION PMINUB
2596                     (SEGMENT DST SRC)
2597                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2598                               (EMIT-BYTE SEGMENT 15)
2599                               (EMIT-BYTE SEGMENT 218)
2600                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2601
2602 (DEFINE-INSTRUCTION PMOVMSKB
2603                     (SEGMENT DST SRC)
2604                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2605                               (EMIT-BYTE SEGMENT 15)
2606                               (EMIT-BYTE SEGMENT 215)
2607                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2608
2609 (DEFINE-INSTRUCTION PMULHUW
2610                     (SEGMENT DST SRC)
2611                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2612                               (EMIT-BYTE SEGMENT 15)
2613                               (EMIT-BYTE SEGMENT 228)
2614                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2615
2616 (DEFINE-INSTRUCTION PMULHW
2617                     (SEGMENT DST SRC)
2618                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2619                               (EMIT-BYTE SEGMENT 15)
2620                               (EMIT-BYTE SEGMENT 229)
2621                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2622
2623 (DEFINE-INSTRUCTION PMULLW
2624                     (SEGMENT DST SRC)
2625                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2626                               (EMIT-BYTE SEGMENT 15)
2627                               (EMIT-BYTE SEGMENT 213)
2628                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2629
2630 (DEFINE-INSTRUCTION PMULUDQ
2631                     (SEGMENT DST SRC)
2632                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2633                               (EMIT-BYTE SEGMENT 15)
2634                               (EMIT-BYTE SEGMENT 244)
2635                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2636
2637 (DEFINE-INSTRUCTION POR
2638                     (SEGMENT DST SRC)
2639                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2640                               (EMIT-BYTE SEGMENT 15)
2641                               (EMIT-BYTE SEGMENT 235)
2642                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2643
2644 (DEFINE-INSTRUCTION PSADBW
2645                     (SEGMENT DST SRC)
2646                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2647                               (EMIT-BYTE SEGMENT 15)
2648                               (EMIT-BYTE SEGMENT 246)
2649                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2650
2651 (DEFINE-INSTRUCTION PSSLD
2652                     (SEGMENT DST SRC)
2653                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2654                               (EMIT-BYTE SEGMENT 15)
2655                               (EMIT-BYTE SEGMENT 242)
2656                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2657
2658 (DEFINE-INSTRUCTION PSLLQ
2659                     (SEGMENT DST SRC)
2660                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2661                               (EMIT-BYTE SEGMENT 15)
2662                               (EMIT-BYTE SEGMENT 243)
2663                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2664
2665 (DEFINE-INSTRUCTION PSLLW
2666                     (SEGMENT DST SRC)
2667                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2668                               (EMIT-BYTE SEGMENT 15)
2669                               (EMIT-BYTE SEGMENT 241)
2670                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2671
2672 (DEFINE-INSTRUCTION PSRAD
2673                     (SEGMENT DST SRC)
2674                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2675                               (EMIT-BYTE SEGMENT 15)
2676                               (EMIT-BYTE SEGMENT 226)
2677                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2678
2679 (DEFINE-INSTRUCTION PSRAW
2680                     (SEGMENT DST SRC)
2681                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2682                               (EMIT-BYTE SEGMENT 15)
2683                               (EMIT-BYTE SEGMENT 226)
2684                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2685
2686 (DEFINE-INSTRUCTION PSRLD
2687                     (SEGMENT DST SRC)
2688                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2689                               (EMIT-BYTE SEGMENT 15)
2690                               (EMIT-BYTE SEGMENT 210)
2691                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2692
2693 (DEFINE-INSTRUCTION PSRLQ
2694                     (SEGMENT DST SRC)
2695                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2696                               (EMIT-BYTE SEGMENT 15)
2697                               (EMIT-BYTE SEGMENT 211)
2698                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2699
2700 (DEFINE-INSTRUCTION PSRLW
2701                     (SEGMENT DST SRC)
2702                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2703                               (EMIT-BYTE SEGMENT 15)
2704                               (EMIT-BYTE SEGMENT 209)
2705                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2706
2707 (DEFINE-INSTRUCTION PSUBB
2708                     (SEGMENT DST SRC)
2709                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2710                               (EMIT-BYTE SEGMENT 15)
2711                               (EMIT-BYTE SEGMENT 248)
2712                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2713
2714 (DEFINE-INSTRUCTION PSUBD
2715                     (SEGMENT DST SRC)
2716                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2717                               (EMIT-BYTE SEGMENT 15)
2718                               (EMIT-BYTE SEGMENT 250)
2719                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2720
2721 (DEFINE-INSTRUCTION PSUBQ
2722                     (SEGMENT DST SRC)
2723                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2724                               (EMIT-BYTE SEGMENT 15)
2725                               (EMIT-BYTE SEGMENT 251)
2726                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2727
2728 (DEFINE-INSTRUCTION PSUBSB
2729                     (SEGMENT DST SRC)
2730                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2731                               (EMIT-BYTE SEGMENT 15)
2732                               (EMIT-BYTE SEGMENT 232)
2733                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2734
2735 (DEFINE-INSTRUCTION PSUBSW
2736                     (SEGMENT DST SRC)
2737                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2738                               (EMIT-BYTE SEGMENT 15)
2739                               (EMIT-BYTE SEGMENT 233)
2740                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2741
2742 (DEFINE-INSTRUCTION PSUBUSB
2743                     (SEGMENT DST SRC)
2744                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2745                               (EMIT-BYTE SEGMENT 15)
2746                               (EMIT-BYTE SEGMENT 216)
2747                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2748
2749 (DEFINE-INSTRUCTION PSUBUSW
2750                     (SEGMENT DST SRC)
2751                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2752                               (EMIT-BYTE SEGMENT 15)
2753                               (EMIT-BYTE SEGMENT 217)
2754                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2755
2756 (DEFINE-INSTRUCTION PSUBW
2757                     (SEGMENT DST SRC)
2758                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2759                               (EMIT-BYTE SEGMENT 15)
2760                               (EMIT-BYTE SEGMENT 249)
2761                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2762
2763 (DEFINE-INSTRUCTION PUNPCKHBW
2764                     (SEGMENT DST SRC)
2765                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2766                               (EMIT-BYTE SEGMENT 15)
2767                               (EMIT-BYTE SEGMENT 104)
2768                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2769
2770 (DEFINE-INSTRUCTION PUNPCKHDQ
2771                     (SEGMENT DST SRC)
2772                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2773                               (EMIT-BYTE SEGMENT 15)
2774                               (EMIT-BYTE SEGMENT 106)
2775                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2776
2777 (DEFINE-INSTRUCTION PUNPCKHQDQ
2778                     (SEGMENT DST SRC)
2779                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2780                               (EMIT-BYTE SEGMENT 15)
2781                               (EMIT-BYTE SEGMENT 109)
2782                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2783
2784 (DEFINE-INSTRUCTION PUNPCKHWD
2785                     (SEGMENT DST SRC)
2786                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2787                               (EMIT-BYTE SEGMENT 15)
2788                               (EMIT-BYTE SEGMENT 105)
2789                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2790
2791 (DEFINE-INSTRUCTION PUNPCKLBW
2792                     (SEGMENT DST SRC)
2793                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2794                               (EMIT-BYTE SEGMENT 15)
2795                               (EMIT-BYTE SEGMENT 96)
2796                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2797
2798 (DEFINE-INSTRUCTION PUNPCKLDQ
2799                     (SEGMENT DST SRC)
2800                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2801                               (EMIT-BYTE SEGMENT 15)
2802                               (EMIT-BYTE SEGMENT 98)
2803                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2804
2805 (DEFINE-INSTRUCTION PUNPCKLQDQ
2806                     (SEGMENT DST SRC)
2807                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2808                               (EMIT-BYTE SEGMENT 15)
2809                               (EMIT-BYTE SEGMENT 108)
2810                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2811
2812 (DEFINE-INSTRUCTION PUNPCKLWD
2813                     (SEGMENT DST SRC)
2814                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2815                               (EMIT-BYTE SEGMENT 15)
2816                               (EMIT-BYTE SEGMENT 97)
2817                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2818
2819 (DEFINE-INSTRUCTION PXOR
2820                     (SEGMENT DST SRC)
2821                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2822                               (EMIT-BYTE SEGMENT 15)
2823                               (EMIT-BYTE SEGMENT 239)
2824                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2825
2826 (DEFINE-INSTRUCTION CVTDQ2PD
2827                     (SEGMENT DST SRC)
2828                     (:EMITTER (EMIT-BYTE SEGMENT 243)
2829                               (EMIT-BYTE SEGMENT 15)
2830                               (EMIT-BYTE SEGMENT 230)
2831                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2832
2833 (DEFINE-INSTRUCTION CVTDQ2PS
2834                     (SEGMENT DST SRC)
2835                     (:EMITTER (EMIT-BYTE SEGMENT 15)
2836                               (EMIT-BYTE SEGMENT 91)
2837                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2838
2839 (DEFINE-INSTRUCTION CVTPD2DQ
2840                     (SEGMENT DST SRC)
2841                     (:EMITTER (EMIT-BYTE SEGMENT 242)
2842                               (EMIT-BYTE SEGMENT 15)
2843                               (EMIT-BYTE SEGMENT 230)
2844                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2845
2846 (DEFINE-INSTRUCTION CVTPD2PI
2847                     (SEGMENT DST SRC)
2848                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2849                               (EMIT-BYTE SEGMENT 15)
2850                               (EMIT-BYTE SEGMENT 45)
2851                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2852
2853 (DEFINE-INSTRUCTION CVTPD2PS
2854                     (SEGMENT DST SRC)
2855                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2856                               (EMIT-BYTE SEGMENT 15)
2857                               (EMIT-BYTE SEGMENT 90)
2858                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2859
2860 (DEFINE-INSTRUCTION CVTPI2PD
2861                     (SEGMENT DST SRC)
2862                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2863                               (EMIT-BYTE SEGMENT 15)
2864                               (EMIT-BYTE SEGMENT 42)
2865                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2866
2867 (DEFINE-INSTRUCTION CVTPI2PS
2868                     (SEGMENT DST SRC)
2869                     (:EMITTER (EMIT-BYTE SEGMENT 15)
2870                               (EMIT-BYTE SEGMENT 42)
2871                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2872
2873 (DEFINE-INSTRUCTION CVTPS2DQ
2874                     (SEGMENT DST SRC)
2875                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2876                               (EMIT-BYTE SEGMENT 15)
2877                               (EMIT-BYTE SEGMENT 91)
2878                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2879
2880 (DEFINE-INSTRUCTION CVTPS2PD
2881                     (SEGMENT DST SRC)
2882                     (:EMITTER (EMIT-BYTE SEGMENT 15)
2883                               (EMIT-BYTE SEGMENT 90)
2884                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2885
2886 (DEFINE-INSTRUCTION CVTPS2PI
2887                     (SEGMENT DST SRC)
2888                     (:EMITTER (EMIT-BYTE SEGMENT 15)
2889                               (EMIT-BYTE SEGMENT 45)
2890                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2891
2892 (DEFINE-INSTRUCTION CVTSD2SI
2893                     (SEGMENT DST SRC)
2894                     (:EMITTER (EMIT-BYTE SEGMENT 242)
2895                               (EMIT-BYTE SEGMENT 15)
2896                               (EMIT-BYTE SEGMENT 45)
2897                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2898
2899 (DEFINE-INSTRUCTION CVTSD2SS
2900                     (SEGMENT DST SRC)
2901                     (:EMITTER (EMIT-BYTE SEGMENT 242)
2902                               (EMIT-BYTE SEGMENT 15)
2903                               (EMIT-BYTE SEGMENT 90)
2904                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2905
2906 (DEFINE-INSTRUCTION CVTSI2SD
2907                     (SEGMENT DST SRC)
2908                     (:EMITTER (EMIT-BYTE SEGMENT 242)
2909                               (EMIT-BYTE SEGMENT 15)
2910                               (EMIT-BYTE SEGMENT 42)
2911                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2912
2913 (DEFINE-INSTRUCTION CVTSI2SS
2914                     (SEGMENT DST SRC)
2915                     (:EMITTER (EMIT-BYTE SEGMENT 243)
2916                               (EMIT-BYTE SEGMENT 15)
2917                               (EMIT-BYTE SEGMENT 42)
2918                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2919
2920 (DEFINE-INSTRUCTION CVTSS2SD
2921                     (SEGMENT DST SRC)
2922                     (:EMITTER (EMIT-BYTE SEGMENT 243)
2923                               (EMIT-BYTE SEGMENT 15)
2924                               (EMIT-BYTE SEGMENT 90)
2925                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2926
2927 (DEFINE-INSTRUCTION CVTSS2SI
2928                     (SEGMENT DST SRC)
2929                     (:EMITTER (EMIT-BYTE SEGMENT 243)
2930                               (EMIT-BYTE SEGMENT 15)
2931                               (EMIT-BYTE SEGMENT 45)
2932                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2933
2934 (DEFINE-INSTRUCTION CVTTPD2DQ
2935                     (SEGMENT DST SRC)
2936                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2937                               (EMIT-BYTE SEGMENT 15)
2938                               (EMIT-BYTE SEGMENT 230)
2939                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2940
2941 (DEFINE-INSTRUCTION CVTTPD2PI
2942                     (SEGMENT DST SRC)
2943                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2944                               (EMIT-BYTE SEGMENT 15)
2945                               (EMIT-BYTE SEGMENT 44)
2946                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2947
2948 (DEFINE-INSTRUCTION CVTTPS2DQ
2949                     (SEGMENT DST SRC)
2950                     (:EMITTER (EMIT-BYTE SEGMENT 243)
2951                               (EMIT-BYTE SEGMENT 15)
2952                               (EMIT-BYTE SEGMENT 91)
2953                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2954
2955 (DEFINE-INSTRUCTION CVTTPS2PI
2956                     (SEGMENT DST SRC)
2957                     (:EMITTER (EMIT-BYTE SEGMENT 15)
2958                               (EMIT-BYTE SEGMENT 44)
2959                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2960
2961 (DEFINE-INSTRUCTION CVTTSD2SI
2962                     (SEGMENT DST SRC)
2963                     (:EMITTER (EMIT-BYTE SEGMENT 242)
2964                               (EMIT-BYTE SEGMENT 15)
2965                               (EMIT-BYTE SEGMENT 44)
2966                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2967
2968 (DEFINE-INSTRUCTION CVTTSS2SI
2969                     (SEGMENT DST SRC)
2970                     (:EMITTER (EMIT-BYTE SEGMENT 243)
2971                               (EMIT-BYTE SEGMENT 15)
2972                               (EMIT-BYTE SEGMENT 44)
2973                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2974
2975 (DEFINE-INSTRUCTION LDDQU
2976                     (SEGMENT DST SRC)
2977                     (:EMITTER (EMIT-BYTE SEGMENT 242)
2978                               (EMIT-BYTE SEGMENT 15)
2979                               (EMIT-BYTE SEGMENT 240)
2980                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2981
2982 (DEFINE-INSTRUCTION MASKMOVDQU
2983                     (SEGMENT DST SRC)
2984                     (:EMITTER (EMIT-BYTE SEGMENT 102)
2985                               (EMIT-BYTE SEGMENT 15)
2986                               (EMIT-BYTE SEGMENT 247)
2987                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2988
2989 (DEFINE-INSTRUCTION MOVDDUP
2990                     (SEGMENT DST SRC)
2991                     (:EMITTER (EMIT-BYTE SEGMENT 242)
2992                               (EMIT-BYTE SEGMENT 15)
2993                               (EMIT-BYTE SEGMENT 18)
2994                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
2995
2996 (DEFINE-INSTRUCTION MOVHLPS
2997                     (SEGMENT DST SRC)
2998                     (:EMITTER (EMIT-BYTE SEGMENT 15)
2999                               (EMIT-BYTE SEGMENT 18)
3000                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
3001
3002 (DEFINE-INSTRUCTION MOVLHPS
3003                     (SEGMENT DST SRC)
3004                     (:EMITTER (EMIT-BYTE SEGMENT 15)
3005                               (EMIT-BYTE SEGMENT 22)
3006                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
3007
3008 (DEFINE-INSTRUCTION MOVMSKPD
3009                     (SEGMENT DST SRC)
3010                     (:EMITTER (EMIT-BYTE SEGMENT 102)
3011                               (EMIT-BYTE SEGMENT 15)
3012                               (EMIT-BYTE SEGMENT 80)
3013                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
3014
3015 (DEFINE-INSTRUCTION MOVMSKPS
3016                     (SEGMENT DST SRC)
3017                     (:EMITTER (EMIT-BYTE SEGMENT 15)
3018                               (EMIT-BYTE SEGMENT 80)
3019                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
3020
3021 (DEFINE-INSTRUCTION MOVNTDQ
3022                     (SEGMENT DST SRC)
3023                     (:EMITTER (EMIT-BYTE SEGMENT 102)
3024                               (EMIT-BYTE SEGMENT 15)
3025                               (EMIT-BYTE SEGMENT 231)
3026                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
3027
3028 (DEFINE-INSTRUCTION MOVNTPD
3029                     (SEGMENT DST SRC)
3030                     (:EMITTER (EMIT-BYTE SEGMENT 102)
3031                               (EMIT-BYTE SEGMENT 15)
3032                               (EMIT-BYTE SEGMENT 43)
3033                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
3034
3035 (DEFINE-INSTRUCTION MOVNTPS
3036                     (SEGMENT DST SRC)
3037                     (:EMITTER (EMIT-BYTE SEGMENT 15)
3038                               (EMIT-BYTE SEGMENT 43)
3039                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
3040
3041 (DEFINE-INSTRUCTION MOVSHDUP
3042                     (SEGMENT DST SRC)
3043                     (:EMITTER (EMIT-BYTE SEGMENT 243)
3044                               (EMIT-BYTE SEGMENT 15)
3045                               (EMIT-BYTE SEGMENT 22)
3046                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
3047
3048 (DEFINE-INSTRUCTION MOVSLDUP
3049                     (SEGMENT DST SRC)
3050                     (:EMITTER (EMIT-BYTE SEGMENT 243)
3051                               (EMIT-BYTE SEGMENT 15)
3052                               (EMIT-BYTE SEGMENT 18)
3053                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))))
3054
3055 (DEFINE-INSTRUCTION PEXTRW
3056                     (SEGMENT DST SRC BYTE)
3057                     (:EMITTER (EMIT-BYTE SEGMENT 102)
3058                               (EMIT-BYTE SEGMENT 15)
3059                               (EMIT-BYTE SEGMENT 197)
3060                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))
3061                               (EMIT-SIZED-IMMEDIATE SEGMENT :BYTE BYTE)))
3062
3063 (DEFINE-INSTRUCTION PINSRW
3064                     (SEGMENT DST SRC BYTE)
3065                     (:EMITTER (EMIT-BYTE SEGMENT 102)
3066                               (EMIT-BYTE SEGMENT 15)
3067                               (EMIT-BYTE SEGMENT 196)
3068                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))
3069                               (EMIT-SIZED-IMMEDIATE SEGMENT :BYTE BYTE)))
3070
3071 (DEFINE-INSTRUCTION PSHUFD
3072                     (SEGMENT DST SRC BYTE)
3073                     (:EMITTER (EMIT-BYTE SEGMENT 102)
3074                               (EMIT-BYTE SEGMENT 15)
3075                               (EMIT-BYTE SEGMENT 112)
3076                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))
3077                               (EMIT-SIZED-IMMEDIATE SEGMENT :BYTE BYTE)))
3078
3079 (DEFINE-INSTRUCTION PSHUFHW
3080                     (SEGMENT DST SRC BYTE)
3081                     (:EMITTER (EMIT-BYTE SEGMENT 243)
3082                               (EMIT-BYTE SEGMENT 15)
3083                               (EMIT-BYTE SEGMENT 112)
3084                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))
3085                               (EMIT-SIZED-IMMEDIATE SEGMENT :BYTE BYTE)))
3086
3087 (DEFINE-INSTRUCTION PSHUFLW
3088                     (SEGMENT DST SRC BYTE)
3089                     (:EMITTER (EMIT-BYTE SEGMENT 242)
3090                               (EMIT-BYTE SEGMENT 15)
3091                               (EMIT-BYTE SEGMENT 112)
3092                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))
3093                               (EMIT-SIZED-IMMEDIATE SEGMENT :BYTE BYTE)))
3094
3095 (DEFINE-INSTRUCTION SHUFPD
3096                     (SEGMENT DST SRC BYTE)
3097                     (:EMITTER (EMIT-BYTE SEGMENT 102)
3098                               (EMIT-BYTE SEGMENT 15)
3099                               (EMIT-BYTE SEGMENT 198)
3100                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))
3101                               (EMIT-SIZED-IMMEDIATE SEGMENT :BYTE BYTE)))
3102
3103 (DEFINE-INSTRUCTION SHUFPS
3104                     (SEGMENT DST SRC BYTE)
3105                     (:EMITTER (EMIT-BYTE SEGMENT 15)
3106                               (EMIT-BYTE SEGMENT 198)
3107                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))
3108                               (EMIT-SIZED-IMMEDIATE SEGMENT :BYTE BYTE)))
3109
3110 (DEFINE-INSTRUCTION CMPPD
3111                     (SEGMENT DST SRC COND)
3112                     (:EMITTER (EMIT-BYTE SEGMENT 102)
3113                               (EMIT-BYTE SEGMENT 15)
3114                               (EMIT-BYTE SEGMENT 194)
3115                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))
3116                               (EMIT-SIZED-IMMEDIATE SEGMENT
3117                                                     :BYTE
3118                                                     (CDR
3119                                                      (ASSOC COND
3120                                                             '((:EQ . 0)
3121                                                               (:E . 0) (:Z . 0)
3122                                                               (:L . 1)
3123                                                               (:NGE . 1)
3124                                                               (:LE . 2)
3125                                                               (:NG . 2)
3126                                                               (:UNORD . 3)
3127                                                               (:NE . 4)
3128                                                               (:NZ . 4)
3129                                                               (:NL . 5)
3130                                                               (:GE . 5)
3131                                                               (:NLE . 6)
3132                                                               (:G . 6)
3133                                                               (:ORD . 7)))))))
3134
3135 (DEFINE-INSTRUCTION CMPPS
3136                     (SEGMENT DST SRC COND)
3137                     (:EMITTER (EMIT-BYTE SEGMENT 15)
3138                               (EMIT-BYTE SEGMENT 194)
3139                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))
3140                               (EMIT-SIZED-IMMEDIATE SEGMENT
3141                                                     :BYTE
3142                                                     (CDR
3143                                                      (ASSOC COND
3144                                                             '((:EQ . 0)
3145                                                               (:E . 0) (:Z . 0)
3146                                                               (:L . 1)
3147                                                               (:NGE . 1)
3148                                                               (:LE . 2)
3149                                                               (:NG . 2)
3150                                                               (:UNORD . 3)
3151                                                               (:NE . 4)
3152                                                               (:NZ . 4)
3153                                                               (:NL . 5)
3154                                                               (:GE . 5)
3155                                                               (:NLE . 6)
3156                                                               (:G . 6)
3157                                                               (:ORD . 7)))))))
3158
3159 (DEFINE-INSTRUCTION CMPSD
3160                     (SEGMENT DST SRC COND)
3161                     (:EMITTER (EMIT-BYTE SEGMENT 242)
3162                               (EMIT-BYTE SEGMENT 15)
3163                               (EMIT-BYTE SEGMENT 194)
3164                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))
3165                               (EMIT-SIZED-IMMEDIATE SEGMENT
3166                                                     :BYTE
3167                                                     (CDR
3168                                                      (ASSOC COND
3169                                                             '((:EQ . 0)
3170                                                               (:E . 0) (:Z . 0)
3171                                                               (:L . 1)
3172                                                               (:NGE . 1)
3173                                                               (:LE . 2)
3174                                                               (:NG . 2)
3175                                                               (:UNORD . 3)
3176                                                               (:NE . 4)
3177                                                               (:NZ . 4)
3178                                                               (:NL . 5)
3179                                                               (:GE . 5)
3180                                                               (:NLE . 6)
3181                                                               (:G . 6)
3182                                                               (:ORD . 7)))))))
3183
3184 (DEFINE-INSTRUCTION CMPSS
3185                     (SEGMENT DST SRC COND)
3186                     (:EMITTER (EMIT-BYTE SEGMENT 243)
3187                               (EMIT-BYTE SEGMENT 15)
3188                               (EMIT-BYTE SEGMENT 194)
3189                               (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST))
3190                               (EMIT-SIZED-IMMEDIATE SEGMENT
3191                                                     :BYTE
3192                                                     (CDR
3193                                                      (ASSOC COND
3194                                                             '((:EQ . 0)
3195                                                               (:E . 0) (:Z . 0)
3196                                                               (:L . 1)
3197                                                               (:NGE . 1)
3198                                                               (:LE . 2)
3199                                                               (:NG . 2)
3200                                                               (:UNORD . 3)
3201                                                               (:NE . 4)
3202                                                               (:NZ . 4)
3203                                                               (:NL . 5)
3204                                                               (:GE . 5)
3205                                                               (:NLE . 6)
3206                                                               (:G . 6)
3207                                                               (:ORD . 7)))))))
3208
3209 (DEFINE-INSTRUCTION MOVAPD
3210                     (SEGMENT DST SRC)
3211                     (:EMITTER
3212                      (COND
3213                       ((SSE-REGISTER-P DST) (EMIT-BYTE SEGMENT 102)
3214                        (EMIT-BYTE SEGMENT 15) (EMIT-BYTE SEGMENT 40)
3215                        (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST)))
3216                       (T (EMIT-BYTE SEGMENT 102)
3217                          (EMIT-BYTE SEGMENT 15)
3218                          (EMIT-BYTE SEGMENT 41)
3219                          (EMIT-EA SEGMENT DST (REG-TN-ENCODING SRC))))))
3220
3221 (DEFINE-INSTRUCTION MOVAPS
3222                     (SEGMENT DST SRC)
3223                     (:EMITTER
3224                      (COND
3225                       ((SSE-REGISTER-P DST) (EMIT-BYTE SEGMENT 15)
3226                        (EMIT-BYTE SEGMENT 40)
3227                        (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST)))
3228                       (T (EMIT-BYTE SEGMENT 15)
3229                          (EMIT-BYTE SEGMENT 41)
3230                          (EMIT-EA SEGMENT DST (REG-TN-ENCODING SRC))))))
3231
3232 (DEFINE-INSTRUCTION MOVD
3233                     (SEGMENT DST SRC)
3234                     (:EMITTER
3235                      (COND
3236                       ((SSE-REGISTER-P DST) (EMIT-BYTE SEGMENT 102)
3237                        (EMIT-BYTE SEGMENT 15) (EMIT-BYTE SEGMENT 110)
3238                        (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST)))
3239                       (T (EMIT-BYTE SEGMENT 102)
3240                          (EMIT-BYTE SEGMENT 15)
3241                          (EMIT-BYTE SEGMENT 126)
3242                          (EMIT-EA SEGMENT DST (REG-TN-ENCODING SRC))))))
3243
3244 (DEFINE-INSTRUCTION MOVDQA
3245                     (SEGMENT DST SRC)
3246                     (:EMITTER
3247                      (COND
3248                       ((SSE-REGISTER-P DST) (EMIT-BYTE SEGMENT 102)
3249                        (EMIT-BYTE SEGMENT 15) (EMIT-BYTE SEGMENT 111)
3250                        (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST)))
3251                       (T (EMIT-BYTE SEGMENT 102)
3252                          (EMIT-BYTE SEGMENT 15)
3253                          (EMIT-BYTE SEGMENT 127)
3254                          (EMIT-EA SEGMENT DST (REG-TN-ENCODING SRC))))))
3255
3256 (DEFINE-INSTRUCTION MOVDQU
3257                     (SEGMENT DST SRC)
3258                     (:EMITTER
3259                      (COND
3260                       ((SSE-REGISTER-P DST) (EMIT-BYTE SEGMENT 243)
3261                        (EMIT-BYTE SEGMENT 15) (EMIT-BYTE SEGMENT 111)
3262                        (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST)))
3263                       (T (EMIT-BYTE SEGMENT 243)
3264                          (EMIT-BYTE SEGMENT 15)
3265                          (EMIT-BYTE SEGMENT 127)
3266                          (EMIT-EA SEGMENT DST (REG-TN-ENCODING SRC))))))
3267
3268 (DEFINE-INSTRUCTION MOVHPD
3269                     (SEGMENT DST SRC)
3270                     (:EMITTER
3271                      (COND
3272                       ((SSE-REGISTER-P DST) (EMIT-BYTE SEGMENT 102)
3273                        (EMIT-BYTE SEGMENT 15) (EMIT-BYTE SEGMENT 22)
3274                        (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST)))
3275                       (T (EMIT-BYTE SEGMENT 102)
3276                          (EMIT-BYTE SEGMENT 15)
3277                          (EMIT-BYTE SEGMENT 23)
3278                          (EMIT-EA SEGMENT DST (REG-TN-ENCODING SRC))))))
3279
3280 (DEFINE-INSTRUCTION MOVHPS
3281                     (SEGMENT DST SRC)
3282                     (:EMITTER
3283                      (COND
3284                       ((SSE-REGISTER-P DST) (EMIT-BYTE SEGMENT 15)
3285                        (EMIT-BYTE SEGMENT 22)
3286                        (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST)))
3287                       (T (EMIT-BYTE SEGMENT 15)
3288                          (EMIT-BYTE SEGMENT 23)
3289                          (EMIT-EA SEGMENT DST (REG-TN-ENCODING SRC))))))
3290
3291 (DEFINE-INSTRUCTION MOVLPD
3292                     (SEGMENT DST SRC)
3293                     (:EMITTER
3294                      (COND
3295                       ((SSE-REGISTER-P DST) (EMIT-BYTE SEGMENT 102)
3296                        (EMIT-BYTE SEGMENT 15) (EMIT-BYTE SEGMENT 18)
3297                        (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST)))
3298                       (T (EMIT-BYTE SEGMENT 102)
3299                          (EMIT-BYTE SEGMENT 15)
3300                          (EMIT-BYTE SEGMENT 19)
3301                          (EMIT-EA SEGMENT DST (REG-TN-ENCODING SRC))))))
3302
3303 (DEFINE-INSTRUCTION MOVLPS
3304                     (SEGMENT DST SRC)
3305                     (:EMITTER
3306                      (COND
3307                       ((SSE-REGISTER-P DST) (EMIT-BYTE SEGMENT 15)
3308                        (EMIT-BYTE SEGMENT 18)
3309                        (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST)))
3310                       (T (EMIT-BYTE SEGMENT 15)
3311                          (EMIT-BYTE SEGMENT 19)
3312                          (EMIT-EA SEGMENT DST (REG-TN-ENCODING SRC))))))
3313
3314 (DEFINE-INSTRUCTION MOVQ
3315                     (SEGMENT DST SRC)
3316                     (:EMITTER
3317                      (COND
3318                       ((SSE-REGISTER-P DST) (EMIT-BYTE SEGMENT 243)
3319                        (EMIT-BYTE SEGMENT 15) (EMIT-BYTE SEGMENT 126)
3320                        (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST)))
3321                       (T (EMIT-BYTE SEGMENT 102)
3322                          (EMIT-BYTE SEGMENT 15)
3323                          (EMIT-BYTE SEGMENT 214)
3324                          (EMIT-EA SEGMENT DST (REG-TN-ENCODING SRC))))))
3325
3326 (DEFINE-INSTRUCTION MOVSD
3327                     (SEGMENT DST SRC)
3328                     (:EMITTER
3329                      (COND
3330                       ((SSE-REGISTER-P DST) (EMIT-BYTE SEGMENT 242)
3331                        (EMIT-BYTE SEGMENT 15) (EMIT-BYTE SEGMENT 16)
3332                        (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST)))
3333                       (T (EMIT-BYTE SEGMENT 242)
3334                          (EMIT-BYTE SEGMENT 15)
3335                          (EMIT-BYTE SEGMENT 17)
3336                          (EMIT-EA SEGMENT DST (REG-TN-ENCODING SRC))))))
3337
3338 (DEFINE-INSTRUCTION MOVSS
3339                     (SEGMENT DST SRC)
3340                     (:EMITTER
3341                      (COND
3342                       ((SSE-REGISTER-P DST) (EMIT-BYTE SEGMENT 243)
3343                        (EMIT-BYTE SEGMENT 15) (EMIT-BYTE SEGMENT 16)
3344                        (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST)))
3345                       (T (EMIT-BYTE SEGMENT 243)
3346                          (EMIT-BYTE SEGMENT 15)
3347                          (EMIT-BYTE SEGMENT 17)
3348                          (EMIT-EA SEGMENT DST (REG-TN-ENCODING SRC))))))
3349
3350 (DEFINE-INSTRUCTION MOVUPD
3351                     (SEGMENT DST SRC)
3352                     (:EMITTER
3353                      (COND
3354                       ((SSE-REGISTER-P DST) (EMIT-BYTE SEGMENT 102)
3355                        (EMIT-BYTE SEGMENT 15) (EMIT-BYTE SEGMENT 16)
3356                        (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST)))
3357                       (T (EMIT-BYTE SEGMENT 102)
3358                          (EMIT-BYTE SEGMENT 15)
3359                          (EMIT-BYTE SEGMENT 17)
3360                          (EMIT-EA SEGMENT DST (REG-TN-ENCODING SRC))))))
3361
3362 (DEFINE-INSTRUCTION MOVUPS
3363                     (SEGMENT DST SRC)
3364                     (:EMITTER
3365                      (COND
3366                       ((SSE-REGISTER-P DST) (EMIT-BYTE SEGMENT 15)
3367                        (EMIT-BYTE SEGMENT 16)
3368                        (EMIT-EA SEGMENT SRC (REG-TN-ENCODING DST)))
3369                       (T (EMIT-BYTE SEGMENT 15)
3370                          (EMIT-BYTE SEGMENT 17)
3371                          (EMIT-EA SEGMENT DST (REG-TN-ENCODING SRC))))))
3372
3373
3374
3375 ;;; CPUID
3376
3377
3378 (define-instruction cpuid (segment)
3379   (:emitter
3380    (emit-byte segment #x0F)
3381    (emit-byte segment #xA2)))
3382
3383
3384
3385
3386 ;;;; fp instructions
3387 ;;;;
3388 ;;;; FIXME: This section said "added by jrd", which should end up in CREDITS.
3389 ;;;;
3390 ;;;; Note: We treat the single-precision and double-precision variants
3391 ;;;; as separate instructions.
3392
3393 ;;; Load single to st(0).
3394 (define-instruction fld (segment source)
3395   (:printer floating-point ((op '(#b001 #b000))))
3396   (:emitter
3397     (emit-byte segment #b11011001)
3398     (emit-fp-op segment source #b000)))
3399
3400 ;;; Load double to st(0).
3401 (define-instruction fldd (segment source)
3402   (:printer floating-point ((op '(#b101 #b000))))
3403   (:printer floating-point-fp ((op '(#b001 #b000))))
3404   (:emitter
3405    (if (fp-reg-tn-p source)
3406        (emit-byte segment #b11011001)
3407      (emit-byte segment #b11011101))
3408     (emit-fp-op segment source #b000)))
3409
3410 ;;; Load long to st(0).
3411 (define-instruction fldl (segment source)
3412   (:printer floating-point ((op '(#b011 #b101))))
3413   (:emitter
3414     (emit-byte segment #b11011011)
3415     (emit-fp-op segment source #b101)))
3416
3417 ;;; Store single from st(0).
3418 (define-instruction fst (segment dest)
3419   (:printer floating-point ((op '(#b001 #b010))))
3420   (:emitter
3421     (cond ((fp-reg-tn-p dest)
3422            (emit-byte segment #b11011101)
3423            (emit-fp-op segment dest #b010))
3424           (t
3425            (emit-byte segment #b11011001)
3426            (emit-fp-op segment dest #b010)))))
3427
3428 ;;; Store double from st(0).
3429 (define-instruction fstd (segment dest)
3430   (:printer floating-point ((op '(#b101 #b010))))
3431   (:printer floating-point-fp ((op '(#b101 #b010))))
3432   (:emitter
3433    (cond ((fp-reg-tn-p dest)
3434           (emit-byte segment #b11011101)
3435           (emit-fp-op segment dest #b010))
3436          (t
3437           (emit-byte segment #b11011101)
3438           (emit-fp-op segment dest #b010)))))
3439
3440 ;;; Arithmetic ops are all done with at least one operand at top of
3441 ;;; stack. The other operand is is another register or a 32/64 bit
3442 ;;; memory loc.
3443
3444 ;;; dtc: I've tried to follow the Intel ASM386 conventions, but note
3445 ;;; that these conflict with the Gdb conventions for binops. To reduce
3446 ;;; the confusion I've added comments showing the mathamatical
3447 ;;; operation and the two syntaxes. By the ASM386 convention the
3448 ;;; instruction syntax is:
3449 ;;;
3450 ;;;      Fop Source
3451 ;;; or   Fop Destination, Source
3452 ;;;
3453 ;;; If only one operand is given then it is the source and the
3454 ;;; destination is ST(0). There are reversed forms of the fsub and
3455 ;;; fdiv instructions inducated by an 'R' suffix.
3456 ;;;
3457 ;;; The mathematical operation for the non-reverse form is always:
3458 ;;;     destination = destination op source
3459 ;;;
3460 ;;; For the reversed form it is:
3461 ;;;     destination = source op destination
3462 ;;;
3463 ;;; The instructions below only accept one operand at present which is
3464 ;;; usually the source. I've hack in extra instructions to implement
3465 ;;; the fops with a ST(i) destination, these have a -sti suffix and
3466 ;;; the operand is the destination with the source being ST(0).
3467
3468 ;;; Add single:
3469 ;;;   st(0) = st(0) + memory or st(i).
3470 (define-instruction fadd (segment source)
3471   (:printer floating-point ((op '(#b000 #b000))))
3472   (:emitter
3473     (emit-byte segment #b11011000)
3474     (emit-fp-op segment source #b000)))
3475
3476 ;;; Add double:
3477 ;;;   st(0) = st(0) + memory or st(i).
3478 (define-instruction faddd (segment source)
3479   (:printer floating-point ((op '(#b100 #b000))))
3480   (:printer floating-point-fp ((op '(#b000 #b000))))
3481   (:emitter
3482    (if (fp-reg-tn-p source)
3483        (emit-byte segment #b11011000)
3484      (emit-byte segment #b11011100))
3485    (emit-fp-op segment source #b000)))
3486
3487 ;;; Add double destination st(i):
3488 ;;;   st(i) = st(0) + st(i).
3489 (define-instruction fadd-sti (segment destination)
3490   (:printer floating-point-fp ((op '(#b100 #b000))))
3491   (:emitter
3492    (aver (fp-reg-tn-p destination))
3493    (emit-byte segment #b11011100)
3494    (emit-fp-op segment destination #b000)))
3495 ;;; with pop
3496 (define-instruction faddp-sti (segment destination)
3497   (:printer floating-point-fp ((op '(#b110 #b000))))
3498   (:emitter
3499    (aver (fp-reg-tn-p destination))
3500    (emit-byte segment #b11011110)
3501    (emit-fp-op segment destination #b000)))
3502
3503 ;;; Subtract single:
3504 ;;;   st(0) = st(0) - memory or st(i).
3505 (define-instruction fsub (segment source)
3506   (:printer floating-point ((op '(#b000 #b100))))
3507   (:emitter
3508     (emit-byte segment #b11011000)
3509     (emit-fp-op segment source #b100)))
3510
3511 ;;; Subtract single, reverse:
3512 ;;;   st(0) = memory or st(i) - st(0).
3513 (define-instruction fsubr (segment source)
3514   (:printer floating-point ((op '(#b000 #b101))))
3515   (:emitter
3516     (emit-byte segment #b11011000)
3517     (emit-fp-op segment source #b101)))
3518
3519 ;;; Subtract double:
3520 ;;;   st(0) = st(0) - memory or st(i).
3521 (define-instruction fsubd (segment source)
3522   (:printer floating-point ((op '(#b100 #b100))))
3523   (:printer floating-point-fp ((op '(#b000 #b100))))
3524   (:emitter
3525    (if (fp-reg-tn-p source)
3526        (emit-byte segment #b11011000)
3527      (emit-byte segment #b11011100))
3528    (emit-fp-op segment source #b100)))
3529
3530 ;;; Subtract double, reverse:
3531 ;;;   st(0) = memory or st(i) - st(0).
3532 (define-instruction fsubrd (segment source)
3533   (:printer floating-point ((op '(#b100 #b101))))
3534   (:printer floating-point-fp ((op '(#b000 #b101))))
3535   (:emitter
3536    (if (fp-reg-tn-p source)
3537        (emit-byte segment #b11011000)
3538      (emit-byte segment #b11011100))
3539    (emit-fp-op segment source #b101)))
3540
3541 ;;; Subtract double, destination st(i):
3542 ;;;   st(i) = st(i) - st(0).
3543 ;;;
3544 ;;; ASM386 syntax: FSUB ST(i), ST
3545 ;;; Gdb    syntax: fsubr %st,%st(i)
3546 (define-instruction fsub-sti (segment destination)
3547   (:printer floating-point-fp ((op '(#b100 #b101))))
3548   (:emitter
3549    (aver (fp-reg-tn-p destination))
3550    (emit-byte segment #b11011100)
3551    (emit-fp-op segment destination #b101)))
3552 ;;; with a pop
3553 (define-instruction fsubp-sti (segment destination)
3554   (:printer floating-point-fp ((op '(#b110 #b101))))
3555   (:emitter
3556    (aver (fp-reg-tn-p destination))
3557    (emit-byte segment #b11011110)
3558    (emit-fp-op segment destination #b101)))
3559
3560 ;;; Subtract double, reverse, destination st(i):
3561 ;;;   st(i) = st(0) - st(i).
3562 ;;;
3563 ;;; ASM386 syntax: FSUBR ST(i), ST
3564 ;;; Gdb    syntax: fsub %st,%st(i)
3565 (define-instruction fsubr-sti (segment destination)
3566   (:printer floating-point-fp ((op '(#b100 #b100))))
3567   (:emitter
3568    (aver (fp-reg-tn-p destination))
3569    (emit-byte segment #b11011100)
3570    (emit-fp-op segment destination #b100)))
3571 ;;; with a pop
3572 (define-instruction fsubrp-sti (segment destination)
3573   (:printer floating-point-fp ((op '(#b110 #b100))))
3574   (:emitter
3575    (aver (fp-reg-tn-p destination))
3576    (emit-byte segment #b11011110)
3577    (emit-fp-op segment destination #b100)))
3578
3579 ;;; Multiply single:
3580 ;;;   st(0) = st(0) * memory or st(i).
3581 (define-instruction fmul (segment source)
3582   (:printer floating-point ((op '(#b000 #b001))))
3583   (:emitter
3584     (emit-byte segment #b11011000)
3585     (emit-fp-op segment source #b001)))
3586
3587 ;;; Multiply double:
3588 ;;;   st(0) = st(0) * memory or st(i).
3589 (define-instruction fmuld (segment source)
3590   (:printer floating-point ((op '(#b100 #b001))))
3591   (:printer floating-point-fp ((op '(#b000 #b001))))
3592   (:emitter
3593    (if (fp-reg-tn-p source)
3594        (emit-byte segment #b11011000)
3595      (emit-byte segment #b11011100))
3596    (emit-fp-op segment source #b001)))
3597
3598 ;;; Multiply double, destination st(i):
3599 ;;;   st(i) = st(i) * st(0).
3600 (define-instruction fmul-sti (segment destination)
3601   (:printer floating-point-fp ((op '(#b100 #b001))))
3602   (:emitter
3603    (aver (fp-reg-tn-p destination))
3604    (emit-byte segment #b11011100)
3605    (emit-fp-op segment destination #b001)))
3606
3607 ;;; Divide single:
3608 ;;;   st(0) = st(0) / memory or st(i).
3609 (define-instruction fdiv (segment source)
3610   (:printer floating-point ((op '(#b000 #b110))))
3611   (:emitter
3612     (emit-byte segment #b11011000)
3613     (emit-fp-op segment source #b110)))
3614
3615 ;;; Divide single, reverse:
3616 ;;;   st(0) = memory or st(i) / st(0).
3617 (define-instruction fdivr (segment source)
3618   (:printer floating-point ((op '(#b000 #b111))))
3619   (:emitter
3620     (emit-byte segment #b11011000)
3621     (emit-fp-op segment source #b111)))
3622
3623 ;;; Divide double:
3624 ;;;   st(0) = st(0) / memory or st(i).
3625 (define-instruction fdivd (segment source)
3626   (:printer floating-point ((op '(#b100 #b110))))
3627   (:printer floating-point-fp ((op '(#b000 #b110))))
3628   (:emitter
3629    (if (fp-reg-tn-p source)
3630        (emit-byte segment #b11011000)
3631      (emit-byte segment #b11011100))
3632    (emit-fp-op segment source #b110)))
3633
3634 ;;; Divide double, reverse:
3635 ;;;   st(0) = memory or st(i) / st(0).
3636 (define-instruction fdivrd (segment source)
3637   (:printer floating-point ((op '(#b100 #b111))))
3638   (:printer floating-point-fp ((op '(#b000 #b111))))
3639   (:emitter
3640    (if (fp-reg-tn-p source)
3641        (emit-byte segment #b11011000)
3642      (emit-byte segment #b11011100))
3643    (emit-fp-op segment source #b111)))
3644
3645 ;;; Divide double, destination st(i):
3646 ;;;   st(i) = st(i) / st(0).
3647 ;;;
3648 ;;; ASM386 syntax: FDIV ST(i), ST
3649 ;;; Gdb    syntax: fdivr %st,%st(i)
3650 (define-instruction fdiv-sti (segment destination)
3651   (:printer floating-point-fp ((op '(#b100 #b111))))
3652   (:emitter
3653    (aver (fp-reg-tn-p destination))
3654    (emit-byte segment #b11011100)
3655    (emit-fp-op segment destination #b111)))
3656
3657 ;;; Divide double, reverse, destination st(i):
3658 ;;;   st(i) = st(0) / st(i).
3659 ;;;
3660 ;;; ASM386 syntax: FDIVR ST(i), ST
3661 ;;; Gdb    syntax: fdiv %st,%st(i)
3662 (define-instruction fdivr-sti (segment destination)
3663   (:printer floating-point-fp ((op '(#b100 #b110))))
3664   (:emitter
3665    (aver (fp-reg-tn-p destination))
3666    (emit-byte segment #b11011100)
3667    (emit-fp-op segment destination #b110)))
3668
3669 ;;; Exchange fr0 with fr(n). (There is no double precision variant.)
3670 (define-instruction fxch (segment source)
3671   (:printer floating-point-fp ((op '(#b001 #b001))))
3672   (:emitter
3673     (unless (and (tn-p source)
3674                  (eq (sb-name (sc-sb (tn-sc source))) 'float-registers))
3675       (cl:break))
3676     (emit-byte segment #b11011001)
3677     (emit-fp-op segment source #b001)))
3678
3679 ;;; Push 32-bit integer to st0.
3680 (define-instruction fild (segment source)
3681   (:printer floating-point ((op '(#b011 #b000))))
3682   (:emitter
3683    (emit-byte segment #b11011011)
3684    (emit-fp-op segment source #b000)))
3685
3686 ;;; Push 64-bit integer to st0.
3687 (define-instruction fildl (segment source)
3688   (:printer floating-point ((op '(#b111 #b101))))
3689   (:emitter
3690    (emit-byte segment #b11011111)
3691    (emit-fp-op segment source #b101)))
3692
3693 ;;; Store 32-bit integer.
3694 (define-instruction fist (segment dest)
3695   (:printer floating-point ((op '(#b011 #b010))))
3696   (:emitter
3697    (emit-byte segment #b11011011)
3698    (emit-fp-op segment dest #b010)))
3699
3700 ;;; Store and pop 32-bit integer.
3701 (define-instruction fistp (segment dest)
3702   (:printer floating-point ((op '(#b011 #b011))))
3703   (:emitter
3704    (emit-byte segment #b11011011)
3705    (emit-fp-op segment dest #b011)))
3706
3707 ;;; Store and pop 64-bit integer.
3708 (define-instruction fistpl (segment dest)
3709   (:printer floating-point ((op '(#b111 #b111))))
3710   (:emitter
3711    (emit-byte segment #b11011111)
3712    (emit-fp-op segment dest #b111)))
3713
3714 ;;; Store single from st(0) and pop.
3715 (define-instruction fstp (segment dest)
3716   (:printer floating-point ((op '(#b001 #b011))))
3717   (:emitter
3718    (cond ((fp-reg-tn-p dest)
3719           (emit-byte segment #b11011101)
3720           (emit-fp-op segment dest #b011))
3721          (t
3722           (emit-byte segment #b11011001)
3723           (emit-fp-op segment dest #b011)))))
3724
3725 ;;; Store double from st(0) and pop.
3726 (define-instruction fstpd (segment dest)
3727   (:printer floating-point ((op '(#b101 #b011))))
3728   (:printer floating-point-fp ((op '(#b101 #b011))))
3729   (:emitter
3730    (cond ((fp-reg-tn-p dest)
3731           (emit-byte segment #b11011101)
3732           (emit-fp-op segment dest #b011))
3733          (t
3734           (emit-byte segment #b11011101)
3735           (emit-fp-op segment dest #b011)))))
3736
3737 ;;; Store long from st(0) and pop.
3738 (define-instruction fstpl (segment dest)
3739   (:printer floating-point ((op '(#b011 #b111))))
3740   (:emitter
3741     (emit-byte segment #b11011011)
3742     (emit-fp-op segment dest #b111)))
3743
3744 ;;; Decrement stack-top pointer.
3745 (define-instruction fdecstp (segment)
3746   (:printer floating-point-no ((op #b10110)))
3747   (:emitter
3748    (emit-byte segment #b11011001)
3749    (emit-byte segment #b11110110)))
3750
3751 ;;; Increment stack-top pointer.
3752 (define-instruction fincstp (segment)
3753   (:printer floating-point-no ((op #b10111)))
3754   (:emitter
3755    (emit-byte segment #b11011001)
3756    (emit-byte segment #b11110111)))
3757
3758 ;;; Free fp register.
3759 (define-instruction ffree (segment dest)
3760   (:printer floating-point-fp ((op '(#b101 #b000))))
3761   (:emitter
3762    (emit-byte segment #b11011101)
3763    (emit-fp-op segment dest #b000)))
3764
3765 (define-instruction fabs (segment)
3766   (:printer floating-point-no ((op #b00001)))
3767   (:emitter
3768    (emit-byte segment #b11011001)
3769    (emit-byte segment #b11100001)))
3770
3771 (define-instruction fchs (segment)
3772   (:printer floating-point-no ((op #b00000)))
3773   (:emitter
3774    (emit-byte segment #b11011001)
3775    (emit-byte segment #b11100000)))
3776
3777 (define-instruction frndint(segment)
3778   (:printer floating-point-no ((op #b11100)))
3779   (:emitter
3780    (emit-byte segment #b11011001)
3781    (emit-byte segment #b11111100)))
3782
3783 ;;; Initialize NPX.
3784 (define-instruction fninit(segment)
3785   (:printer floating-point-5 ((op #b00011)))
3786   (:emitter
3787    (emit-byte segment #b11011011)
3788    (emit-byte segment #b11100011)))
3789
3790 ;;; Store Status Word to AX.
3791 (define-instruction fnstsw(segment)
3792   (:printer floating-point-st ((op #b00000)))
3793   (:emitter
3794    (emit-byte segment #b11011111)
3795    (emit-byte segment #b11100000)))
3796
3797 ;;; Load Control Word.
3798 ;;;
3799 ;;; src must be a memory location
3800 (define-instruction fldcw(segment src)
3801   (:printer floating-point ((op '(#b001 #b101))))
3802   (:emitter
3803    (emit-byte segment #b11011001)
3804    (emit-fp-op segment src #b101)))
3805
3806 ;;; Store Control Word.
3807 (define-instruction fnstcw(segment dst)
3808   (:printer floating-point ((op '(#b001 #b111))))
3809   (:emitter
3810    (emit-byte segment #b11011001)
3811    (emit-fp-op segment dst #b111)))
3812
3813 ;;; Store FP Environment.
3814 (define-instruction fstenv(segment dst)
3815   (:printer floating-point ((op '(#b001 #b110))))
3816   (:emitter
3817    (emit-byte segment #b11011001)
3818    (emit-fp-op segment dst #b110)))
3819
3820 ;;; Restore FP Environment.
3821 (define-instruction fldenv(segment src)
3822   (:printer floating-point ((op '(#b001 #b100))))
3823   (:emitter
3824    (emit-byte segment #b11011001)
3825    (emit-fp-op segment src #b100)))
3826
3827 ;;; Save FP State.
3828 (define-instruction fsave(segment dst)
3829   (:printer floating-point ((op '(#b101 #b110))))
3830   (:emitter
3831    (emit-byte segment #b11011101)
3832    (emit-fp-op segment dst #b110)))
3833
3834 ;;; Restore FP State.
3835 (define-instruction frstor(segment src)
3836   (:printer floating-point ((op '(#b101 #b100))))
3837   (:emitter
3838    (emit-byte segment #b11011101)
3839    (emit-fp-op segment src #b100)))
3840
3841 ;;; Clear exceptions.
3842 (define-instruction fnclex(segment)
3843   (:printer floating-point-5 ((op #b00010)))
3844   (:emitter
3845    (emit-byte segment #b11011011)
3846    (emit-byte segment #b11100010)))
3847
3848 ;;; comparison
3849 (define-instruction fcom (segment src)
3850   (:printer floating-point ((op '(#b000 #b010))))
3851   (:emitter
3852    (emit-byte segment #b11011000)
3853    (emit-fp-op segment src #b010)))
3854
3855 (define-instruction fcomd (segment src)
3856   (:printer floating-point ((op '(#b100 #b010))))
3857   (:printer floating-point-fp ((op '(#b000 #b010))))
3858   (:emitter
3859    (if (fp-reg-tn-p src)
3860        (emit-byte segment #b11011000)
3861      (emit-byte segment #b11011100))
3862    (emit-fp-op segment src #b010)))
3863
3864 ;;; Compare ST1 to ST0, popping the stack twice.
3865 (define-instruction fcompp (segment)
3866   (:printer floating-point-3 ((op '(#b110 #b011001))))
3867   (:emitter
3868    (emit-byte segment #b11011110)
3869    (emit-byte segment #b11011001)))
3870
3871 ;;; unordered comparison
3872 (define-instruction fucom (segment src)
3873   (:printer floating-point-fp ((op '(#b101 #b100))))
3874   (:emitter
3875    (aver (fp-reg-tn-p src))
3876    (emit-byte segment #b11011101)
3877    (emit-fp-op segment src #b100)))
3878
3879 (define-instruction ftst (segment)
3880   (:printer floating-point-no ((op #b00100)))
3881   (:emitter
3882    (emit-byte segment #b11011001)
3883    (emit-byte segment #b11100100)))
3884
3885 ;;;; 80387 specials
3886
3887 (define-instruction fsqrt(segment)
3888   (:printer floating-point-no ((op #b11010)))
3889   (:emitter
3890    (emit-byte segment #b11011001)
3891    (emit-byte segment #b11111010)))
3892
3893 (define-instruction fscale(segment)
3894   (:printer floating-point-no ((op #b11101)))
3895   (:emitter
3896    (emit-byte segment #b11011001)
3897    (emit-byte segment #b11111101)))
3898
3899 (define-instruction fxtract(segment)
3900   (:printer floating-point-no ((op #b10100)))
3901   (:emitter
3902    (emit-byte segment #b11011001)
3903    (emit-byte segment #b11110100)))
3904
3905 (define-instruction fsin(segment)
3906   (:printer floating-point-no ((op #b11110)))
3907   (:emitter
3908    (emit-byte segment #b11011001)
3909    (emit-byte segment #b11111110)))
3910
3911 (define-instruction fcos(segment)
3912   (:printer floating-point-no ((op #b11111)))
3913   (:emitter
3914    (emit-byte segment #b11011001)
3915    (emit-byte segment #b11111111)))
3916
3917 (define-instruction fprem1(segment)
3918   (:printer floating-point-no ((op #b10101)))
3919   (:emitter
3920    (emit-byte segment #b11011001)
3921    (emit-byte segment #b11110101)))
3922
3923 (define-instruction fprem(segment)
3924   (:printer floating-point-no ((op #b11000)))
3925   (:emitter
3926    (emit-byte segment #b11011001)
3927    (emit-byte segment #b11111000)))
3928
3929 (define-instruction fxam (segment)
3930   (:printer floating-point-no ((op #b00101)))
3931   (:emitter
3932    (emit-byte segment #b11011001)
3933    (emit-byte segment #b11100101)))
3934
3935 ;;; These do push/pop to stack and need special handling
3936 ;;; in any VOPs that use them. See the book.
3937
3938 ;;; st0 <- st1*log2(st0)
3939 (define-instruction fyl2x(segment)      ; pops stack
3940   (:printer floating-point-no ((op #b10001)))
3941   (:emitter
3942    (emit-byte segment #b11011001)
3943    (emit-byte segment #b11110001)))
3944
3945 (define-instruction fyl2xp1(segment)
3946   (:printer floating-point-no ((op #b11001)))
3947   (:emitter
3948    (emit-byte segment #b11011001)
3949    (emit-byte segment #b11111001)))
3950
3951 (define-instruction f2xm1(segment)
3952   (:printer floating-point-no ((op #b10000)))
3953   (:emitter
3954    (emit-byte segment #b11011001)
3955    (emit-byte segment #b11110000)))
3956
3957 (define-instruction fptan(segment)      ; st(0) <- 1; st(1) <- tan
3958   (:printer floating-point-no ((op #b10010)))
3959   (:emitter
3960    (emit-byte segment #b11011001)
3961    (emit-byte segment #b11110010)))
3962
3963 (define-instruction fpatan(segment)     ; POPS STACK
3964   (:printer floating-point-no ((op #b10011)))
3965   (:emitter
3966    (emit-byte segment #b11011001)
3967    (emit-byte segment #b11110011)))
3968
3969 ;;;; loading constants
3970
3971 (define-instruction fldz(segment)
3972   (:printer floating-point-no ((op #b01110)))
3973   (:emitter
3974    (emit-byte segment #b11011001)
3975    (emit-byte segment #b11101110)))
3976
3977 (define-instruction fld1(segment)
3978   (:printer floating-point-no ((op #b01000)))
3979   (:emitter
3980    (emit-byte segment #b11011001)
3981    (emit-byte segment #b11101000)))
3982
3983 (define-instruction fldpi(segment)
3984   (:printer floating-point-no ((op #b01011)))
3985   (:emitter
3986    (emit-byte segment #b11011001)
3987    (emit-byte segment #b11101011)))
3988
3989 (define-instruction fldl2t(segment)
3990   (:printer floating-point-no ((op #b01001)))
3991   (:emitter
3992    (emit-byte segment #b11011001)
3993    (emit-byte segment #b11101001)))
3994
3995 (define-instruction fldl2e(segment)
3996   (:printer floating-point-no ((op #b01010)))
3997   (:emitter
3998    (emit-byte segment #b11011001)
3999    (emit-byte segment #b11101010)))
4000
4001 (define-instruction fldlg2(segment)
4002   (:printer floating-point-no ((op #b01100)))
4003   (:emitter
4004    (emit-byte segment #b11011001)
4005    (emit-byte segment #b11101100)))
4006
4007 (define-instruction fldln2(segment)
4008   (:printer floating-point-no ((op #b01101)))
4009   (:emitter
4010    (emit-byte segment #b11011001)
4011    (emit-byte segment #b11101101)))