1 ;;;; that part of the description of the x86-64 instruction set
2 ;;;; which can live on the cross-compilation host
4 ;;;; This software is part of the SBCL system. See the README file for
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.
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.
18 ;;; Note: In CMU CL, this used to be a call to SET-DISASSEM-PARAMS.
19 (setf sb!disassem:*disassem-inst-alignment-bytes* 1)
21 ;;; this type is used mostly in disassembly and represents legacy
22 ;;; registers only. r8-15 are handled separately
23 (deftype reg () '(unsigned-byte 3))
25 ;; This includes legacy records and r8-16
26 (deftype full-reg () '(unsigned-byte 4))
28 ;;; default word size for the chip: if the operand size !=:dword
29 ;;; we need to output #x66 (or REX) prefix
30 (def!constant +default-operand-size+ :dword)
32 (eval-when (#-sb-xc :compile-toplevel :load-toplevel :execute)
34 (defun offset-next (value dstate)
35 (declare (type integer value)
36 (type sb!disassem:disassem-state dstate))
37 (+ (sb!disassem:dstate-next-addr dstate) value))
39 (defparameter *default-address-size*
40 ;; Again, this is the chip default, not the SBCL backend preference
41 ;; which must be set with prefixes if it's different. It's :dword;
42 ;; this is not negotiable
45 (defparameter *byte-reg-names*
46 #(al cl dl bl sil dil r8b r9b r10b r11b r14b r15b))
47 (defparameter *word-reg-names*
48 #(ax cx dx bx sp bp si di))
49 (defparameter *dword-reg-names*
50 #(eax ecx edx ebx esp ebp esi edi))
51 (defparameter *qword-reg-names*
52 #(rax rcx rdx rbx rsp rbp rsi rdi r8 r9 r10 r11 r12 r13 r14 r15))
54 (defun print-reg-with-width (value width stream dstate)
55 (declare (ignore dstate)
56 (type full-reg value))
57 (princ (aref (ecase width
58 (:byte *byte-reg-names*)
59 (:word *word-reg-names*)
60 (:dword *dword-reg-names*)
61 (:qword *qword-reg-names*))
64 ;; XXX plus should do some source-var notes
67 (defun print-reg (value stream dstate)
68 (declare (type full-reg value)
70 (type sb!disassem:disassem-state dstate))
71 (print-reg-with-width value
72 (or (sb!disassem:dstate-get-prop dstate 'reg-width)
73 *default-address-size*)
77 (defun print-word-reg (value stream dstate)
78 (declare (type (or full-reg list) value)
80 (type sb!disassem:disassem-state dstate))
82 (if (consp value) (car value) value)
83 (or (sb!disassem:dstate-get-prop dstate 'reg-width)
84 +default-operand-size+)
88 (defun print-byte-reg (value stream dstate)
89 (declare (type full-reg value)
91 (type sb!disassem:disassem-state dstate))
92 (print-reg-with-width value :byte stream dstate))
94 (defun print-addr-reg (value stream dstate)
95 (declare (type full-reg value)
97 (type sb!disassem:disassem-state dstate))
98 (print-reg-with-width value
99 (or (sb!disassem:dstate-get-prop dstate 'reg-width)
100 *default-address-size*)
103 (defun print-rex-reg/mem (value stream dstate)
104 (declare (type (or list full-reg) value)
106 (type sb!disassem:disassem-state dstate))
107 (if (typep value 'full-reg)
108 (print-reg value stream dstate)
109 (print-mem-access value stream nil dstate)))
111 (defun print-reg/mem (value stream dstate)
112 (declare (type (or list full-reg) value)
114 (type sb!disassem:disassem-state dstate))
115 (if (typep value 'full-reg)
116 (print-reg value stream dstate)
117 (print-mem-access value stream nil dstate)))
119 ;; Same as print-reg/mem, but prints an explicit size indicator for
120 ;; memory references.
121 (defun print-sized-reg/mem (value stream dstate)
122 (declare (type (or list full-reg) value)
124 (type sb!disassem:disassem-state dstate))
125 (if (typep value 'full-reg)
126 (print-reg value stream dstate)
127 (print-mem-access value stream t dstate)))
129 (defun print-byte-reg/mem (value stream dstate)
130 (declare (type (or list full-reg) value)
132 (type sb!disassem:disassem-state dstate))
133 (if (typep value 'full-reg)
134 (print-byte-reg value stream dstate)
135 (print-mem-access value stream t dstate)))
137 (defun print-word-reg/mem (value stream dstate)
138 (declare (type (or list full-reg) value)
140 (type sb!disassem:disassem-state dstate))
141 (if (typep value 'full-reg)
142 (print-word-reg value stream dstate)
143 (print-mem-access value stream nil dstate)))
145 (defun print-label (value stream dstate)
146 (declare (ignore dstate))
147 (sb!disassem:princ16 value stream))
149 (defun prefilter-word-reg (value dstate)
150 (declare (type (or full-reg list) value))
153 (let ((reg (first value))
154 (rex.wrxb (second value)))
155 (declare (type (or null (unsigned-byte 4)) rex.wrxb)
156 (type (unsigned-byte 3) reg))
157 (setf (sb!disassem:dstate-get-prop dstate 'reg-width)
158 (if (and rex.wrxb (plusp (logand rex.wrxb #b1000)))
160 +default-operand-size+))
161 (if (plusp (logand rex.wrxb #b0100))
165 ;;; Returns either an integer, meaning a register, or a list of
166 ;;; (BASE-REG OFFSET INDEX-REG INDEX-SCALE), where any component
167 ;;; may be missing or nil to indicate that it's not used or has the
168 ;;; obvious default value (e.g., 1 for the index-scale).
169 (defun prefilter-reg/mem (value dstate)
170 (declare (type list value)
171 (type sb!disassem:disassem-state dstate))
172 (let ((mod (first value))
174 (rex.wrxb (third value)))
175 (declare (type (unsigned-byte 2) mod)
176 (type (unsigned-byte 3) r/m)
177 (type (or null (unsigned-byte 4)) rex.wrxb))
179 (setf (sb!disassem:dstate-get-prop dstate 'reg-width)
180 (if (and rex.wrxb (plusp (logand rex.wrxb #b1000)))
182 +default-operand-size+))
184 (let ((full-reg (if (and rex.wrxb (plusp (logand rex.wrxb #b0001)))
186 (setf (sb!disassem:dstate-get-prop dstate 'reg-width)
190 (declare (type full-reg full-reg))
196 (let ((sib (sb!disassem:read-suffix 8 dstate)))
197 (declare (type (unsigned-byte 8) sib))
198 (let ((base-reg (ldb (byte 3 0) sib))
199 (index-reg (ldb (byte 3 3) sib))
200 (index-scale (ldb (byte 2 6) sib)))
201 (declare (type (unsigned-byte 3) base-reg index-reg)
202 (type (unsigned-byte 2) index-scale))
206 (if (= base-reg #b101)
207 (sb!disassem:read-signed-suffix 32 dstate)
210 (sb!disassem:read-signed-suffix 8 dstate))
212 (sb!disassem:read-signed-suffix 32 dstate)))))
213 (list (if (and (= mod #b00) (= base-reg #b101)) nil base-reg)
215 (if (= index-reg #b100) nil index-reg)
216 (ash 1 index-scale))))))
217 ((and (= mod #b00) (= r/m #b101))
218 (list 'rip (sb!disassem:read-signed-suffix 32 dstate)) )
222 (list full-reg (sb!disassem:read-signed-suffix 8 dstate)))
224 (list full-reg (sb!disassem:read-signed-suffix 32 dstate)))))))
227 ;;; This is a sort of bogus prefilter that just stores the info globally for
228 ;;; other people to use; it probably never gets printed.
229 (defun prefilter-width (value dstate)
230 (setf (sb!disassem:dstate-get-prop dstate 'width)
232 (setf (sb!disassem:dstate-get-prop dstate 'reg-width)
235 ;; set by a prefix instruction
236 (or (sb!disassem:dstate-get-prop dstate 'reg-width)
237 +default-operand-size+)))
238 (when (not (eql reg-width +default-operand-size+))
240 (setf (sb!disassem:dstate-get-prop dstate 'reg-width)
241 +default-operand-size+))
244 (defun read-address (value dstate)
245 (declare (ignore value)) ; always nil anyway
246 (sb!disassem:read-suffix (width-bits *default-address-size*) dstate))
248 (defun width-bits (width)
259 ;;;; disassembler argument types
261 (sb!disassem:define-arg-type displacement
263 :use-label #'offset-next
264 :printer (lambda (value stream dstate)
265 (sb!disassem:maybe-note-assembler-routine value nil dstate)
266 (print-label value stream dstate)))
268 (sb!disassem:define-arg-type accum
269 :printer (lambda (value stream dstate)
270 (declare (ignore value)
272 (type sb!disassem:disassem-state dstate))
273 (print-reg 0 stream dstate)))
275 (sb!disassem:define-arg-type word-accum
276 :printer (lambda (value stream dstate)
277 (declare (ignore value)
279 (type sb!disassem:disassem-state dstate))
280 (print-word-reg 0 stream dstate)))
282 (sb!disassem:define-arg-type reg
283 :printer #'print-reg)
285 (sb!disassem:define-arg-type addr-reg
286 :printer #'print-addr-reg)
288 (sb!disassem:define-arg-type word-reg
289 :prefilter #'prefilter-word-reg
290 :printer (lambda (value stream dstate)
291 (print-word-reg value stream dstate)))
294 (sb!disassem:define-arg-type imm-addr
295 :prefilter #'read-address
296 :printer #'print-label)
298 (sb!disassem:define-arg-type imm-data
299 :prefilter (lambda (value dstate)
300 (declare (ignore value)) ; always nil anyway
301 (sb!disassem:read-suffix
303 (or (sb!disassem:dstate-get-prop dstate 'width)
304 *default-address-size*))
307 (sb!disassem:define-arg-type imm-data-upto-dword
308 :prefilter (lambda (value dstate)
309 (declare (ignore value)) ; always nil anyway
310 (let ((width (width-bits
311 (or (sb!disassem:dstate-get-prop dstate 'width)
312 *default-address-size*))))
314 (sb!disassem:read-signed-suffix 32 dstate)
315 (sb!disassem:read-suffix width dstate)))))
317 (sb!disassem:define-arg-type signed-imm-data
318 :prefilter (lambda (value dstate)
319 (declare (ignore value)) ; always nil anyway
320 (let ((width (or (sb!disassem:dstate-get-prop dstate 'width)
321 *default-address-size*)))
322 (sb!disassem:read-signed-suffix (width-bits width) dstate))))
324 (sb!disassem:define-arg-type signed-imm-byte
325 :prefilter (lambda (value dstate)
326 (declare (ignore value)) ; always nil anyway
327 (sb!disassem:read-signed-suffix 8 dstate)))
329 (sb!disassem:define-arg-type signed-imm-dword
330 :prefilter (lambda (value dstate)
331 (declare (ignore value)) ; always nil anyway
332 (sb!disassem:read-signed-suffix 32 dstate)))
334 (sb!disassem:define-arg-type imm-word
335 :prefilter (lambda (value dstate)
336 (declare (ignore value)) ; always nil anyway
338 (or (sb!disassem:dstate-get-prop dstate 'reg-width)
339 +default-operand-size+)))
340 (sb!disassem:read-suffix (width-bits width) dstate))))
342 ;;; needed for the ret imm16 instruction
343 (sb!disassem:define-arg-type imm-word-16
344 :prefilter (lambda (value dstate)
345 (declare (ignore value)) ; always nil anyway
346 (sb!disassem:read-suffix 16 dstate)))
348 (sb!disassem:define-arg-type reg/mem
349 :prefilter #'prefilter-reg/mem
350 :printer #'print-reg/mem)
351 (sb!disassem:define-arg-type sized-reg/mem
352 ;; Same as reg/mem, but prints an explicit size indicator for
353 ;; memory references.
354 :prefilter #'prefilter-reg/mem
355 :printer #'print-sized-reg/mem)
356 (sb!disassem:define-arg-type byte-reg/mem
357 :prefilter #'prefilter-reg/mem
358 :printer #'print-byte-reg/mem)
359 (sb!disassem:define-arg-type word-reg/mem
360 :prefilter #'prefilter-reg/mem
361 :printer #'print-word-reg/mem)
363 (sb!disassem:define-arg-type rex-reg/mem
364 :prefilter #'prefilter-reg/mem
365 :printer #'print-rex-reg/mem)
366 (sb!disassem:define-arg-type sized-rex-reg/mem
367 ;; Same as reg/mem, but prints an explicit size indicator for
368 ;; memory references.
369 :prefilter #'prefilter-reg/mem
370 :printer #'print-sized-reg/mem)
373 (eval-when (#-sb-xc :compile-toplevel :load-toplevel :execute)
374 (defun print-fp-reg (value stream dstate)
375 (declare (ignore dstate))
376 (format stream "FR~D" value))
377 (defun prefilter-fp-reg (value dstate)
379 (declare (ignore dstate))
382 (sb!disassem:define-arg-type fp-reg
383 :prefilter #'prefilter-fp-reg
384 :printer #'print-fp-reg)
386 (sb!disassem:define-arg-type width
387 :prefilter #'prefilter-width
388 :printer (lambda (value stream dstate)
391 (and (numberp value) (zerop value))) ; zzz jrd
394 ;; set by a prefix instruction
395 (or (sb!disassem:dstate-get-prop dstate 'reg-width)
396 +default-operand-size+)))
397 (princ (schar (symbol-name reg-width) 0) stream)))))
399 (eval-when (:compile-toplevel :load-toplevel :execute)
400 (defparameter *conditions*
403 (:b . 2) (:nae . 2) (:c . 2)
404 (:nb . 3) (:ae . 3) (:nc . 3)
405 (:eq . 4) (:e . 4) (:z . 4)
412 (:np . 11) (:po . 11)
413 (:l . 12) (:nge . 12)
414 (:nl . 13) (:ge . 13)
415 (:le . 14) (:ng . 14)
416 (:nle . 15) (:g . 15)))
417 (defparameter *condition-name-vec*
418 (let ((vec (make-array 16 :initial-element nil)))
419 (dolist (cond *conditions*)
420 (when (null (aref vec (cdr cond)))
421 (setf (aref vec (cdr cond)) (car cond))))
425 ;;; Set assembler parameters. (In CMU CL, this was done with
426 ;;; a call to a macro DEF-ASSEMBLER-PARAMS.)
427 (eval-when (:compile-toplevel :load-toplevel :execute)
428 (setf sb!assem:*assem-scheduler-p* nil))
430 (sb!disassem:define-arg-type condition-code
431 :printer *condition-name-vec*)
433 (defun conditional-opcode (condition)
434 (cdr (assoc condition *conditions* :test #'eq)))
436 ;;;; disassembler instruction formats
438 (eval-when (:compile-toplevel :execute)
439 (defun swap-if (direction field1 separator field2)
440 `(:if (,direction :constant 0)
441 (,field1 ,separator ,field2)
442 (,field2 ,separator ,field1))))
444 (sb!disassem:define-instruction-format (byte 8 :default-printer '(:name))
445 (op :field (byte 8 0))
450 (sb!disassem:define-instruction-format (simple 8)
451 (op :field (byte 7 1))
452 (width :field (byte 1 0) :type 'width)
457 (sb!disassem:define-instruction-format (rex-simple 16)
458 (rex :field (byte 4 4) :value #b0100)
459 (wrxb :field (byte 4 0))
460 (op :field (byte 7 9))
461 (width :field (byte 1 8) :type 'width)
466 ;;; Same as simple, but with direction bit
467 (sb!disassem:define-instruction-format (simple-dir 8 :include 'simple)
468 (op :field (byte 6 2))
469 (dir :field (byte 1 1)))
471 ;;; Same as simple, but with the immediate value occurring by default,
472 ;;; and with an appropiate printer.
473 (sb!disassem:define-instruction-format (accum-imm 8
475 :default-printer '(:name
476 :tab accum ", " imm))
477 (imm :type 'imm-data))
479 (sb!disassem:define-instruction-format (rex-accum-imm 16
481 :default-printer '(:name
482 :tab accum ", " imm))
483 (imm :type 'imm-data-upto-dword))
485 (sb!disassem:define-instruction-format (reg-no-width 8
486 :default-printer '(:name :tab reg))
487 (op :field (byte 5 3))
488 (reg :field (byte 3 0) :type 'word-reg)
490 (accum :type 'word-accum)
493 (sb!disassem:define-instruction-format (rex-reg-no-width 16
494 :default-printer '(:name :tab reg))
495 (rex :field (byte 4 4) :value #b0100)
496 (op :field (byte 5 11))
497 (reg :fields (list (byte 3 8) (byte 4 0)) :type 'word-reg)
499 (accum :type 'word-accum)
502 (sb!disassem:define-instruction-format (modrm-reg-no-width 24
503 :default-printer '(:name :tab reg))
504 (rex :field (byte 4 4) :value #b0100)
505 (ff :field (byte 8 8) :value #b11111111)
506 (mod :field (byte 2 22))
507 (modrm-reg :field (byte 3 19))
508 (reg :fields (list (byte 3 16) (byte 4 0)) :type 'word-reg)
510 (accum :type 'word-accum)
513 ;;; adds a width field to reg-no-width
514 (sb!disassem:define-instruction-format (reg 8
515 :default-printer '(:name :tab reg))
516 (op :field (byte 4 4))
517 (width :field (byte 1 3) :type 'width)
518 (reg :field (byte 3 0) :type 'reg)
524 (sb!disassem:define-instruction-format (rex-reg 16
525 :default-printer '(:name :tab reg))
526 (rex :field (byte 4 4) :value #b0100)
527 (op :field (byte 5 11))
528 (reg :field (byte 3 8) :type 'reg)
534 ;;; Same as reg, but with direction bit
535 (sb!disassem:define-instruction-format (reg-dir 8 :include 'reg)
536 (op :field (byte 3 5))
537 (dir :field (byte 1 4)))
539 (sb!disassem:define-instruction-format (two-bytes 16
540 :default-printer '(:name))
541 (op :fields (list (byte 8 0) (byte 8 8))))
543 (sb!disassem:define-instruction-format (reg-reg/mem 16
545 `(:name :tab reg ", " reg/mem))
546 (op :field (byte 7 1))
547 (width :field (byte 1 0) :type 'width)
548 (reg/mem :fields (list (byte 2 14) (byte 3 8))
550 (reg :field (byte 3 11) :type 'reg)
554 (sb!disassem:define-instruction-format (rex-reg-reg/mem 24
556 `(:name :tab reg ", " reg/mem))
557 (rex :field (byte 4 4) :value #b0100)
558 (op :field (byte 8 8))
559 (reg/mem :fields (list (byte 2 22) (byte 3 16) (byte 4 0))
561 (reg :field (byte 3 19) :type 'reg)
565 ;;; same as reg-reg/mem, but with direction bit
566 (sb!disassem:define-instruction-format (reg-reg/mem-dir 16
567 :include 'reg-reg/mem
571 ,(swap-if 'dir 'reg/mem ", " 'reg)))
572 (op :field (byte 6 2))
573 (dir :field (byte 1 1)))
575 (sb!disassem:define-instruction-format (rex-reg-reg/mem-dir 24
576 :include 'rex-reg-reg/mem
580 ,(swap-if 'dir 'reg/mem ", " 'reg)))
581 (rex :field (byte 4 4) :value #b0100)
582 (op :field (byte 6 10))
583 (dir :field (byte 1 9)))
585 ;;; Same as reg-rem/mem, but uses the reg field as a second op code.
586 (sb!disassem:define-instruction-format (reg/mem 16
587 :default-printer '(:name :tab reg/mem))
588 (op :fields (list (byte 7 1) (byte 3 11)))
589 (width :field (byte 1 0) :type 'width)
590 (reg/mem :fields (list (byte 2 14) (byte 3 8))
591 :type 'sized-reg/mem)
595 (sb!disassem:define-instruction-format (rex-reg/mem 24
596 :default-printer '(:name :tab reg/mem))
597 (rex :field (byte 4 4) :value #b0100)
598 (op :fields (list (byte 8 8) (byte 3 19)))
599 (reg/mem :fields (list (byte 2 22) (byte 3 16) (byte 4 0)) :type 'sized-rex-reg/mem)
603 ;;; Same as reg/mem, but with the immediate value occurring by default,
604 ;;; and with an appropiate printer.
605 (sb!disassem:define-instruction-format (reg/mem-imm 16
608 '(:name :tab reg/mem ", " imm))
609 (reg/mem :type 'sized-reg/mem)
610 (imm :type 'imm-data))
612 (sb!disassem:define-instruction-format (rex-reg/mem-imm 24
613 :include 'rex-reg/mem
615 '(:name :tab reg/mem ", " imm))
616 (reg/mem :type 'sized-rex-reg/mem)
617 (imm :type 'imm-data-upto-dword))
619 ;;; Same as reg/mem, but with using the accumulator in the default printer
620 (sb!disassem:define-instruction-format
622 :include 'reg/mem :default-printer '(:name :tab accum ", " reg/mem))
623 (reg/mem :type 'reg/mem) ; don't need a size
624 (accum :type 'accum))
626 ;;; Same as reg-reg/mem, but with a prefix of #b00001111
627 (sb!disassem:define-instruction-format (ext-reg-reg/mem 24
629 `(:name :tab reg ", " reg/mem))
630 (prefix :field (byte 8 0) :value #b00001111)
631 (op :field (byte 7 9))
632 (width :field (byte 1 8) :type 'width)
633 (reg/mem :fields (list (byte 2 22) (byte 3 16))
635 (reg :field (byte 3 19) :type 'reg)
639 ;;; Same as reg-reg/mem, but with a prefix of #xf2 0f
640 (sb!disassem:define-instruction-format (xmm-ext-reg-reg/mem 32
642 `(:name :tab reg ", " reg/mem))
643 (prefix :field (byte 8 0) :value #xf2)
644 (prefix2 :field (byte 8 8) :value #x0f)
645 (op :field (byte 7 17))
646 (width :field (byte 1 16) :type 'width)
647 (reg/mem :fields (list (byte 2 30) (byte 3 24))
649 (reg :field (byte 3 27) :type 'reg)
653 ;;; reg-no-width with #x0f prefix
654 (sb!disassem:define-instruction-format (ext-reg-no-width 16
655 :default-printer '(:name :tab reg))
656 (prefix :field (byte 8 0) :value #b00001111)
657 (op :field (byte 5 11))
658 (reg :field (byte 3 8) :type 'word-reg))
660 ;;; Same as reg/mem, but with a prefix of #b00001111
661 (sb!disassem:define-instruction-format (ext-reg/mem 24
662 :default-printer '(:name :tab reg/mem))
663 (prefix :field (byte 8 0) :value #b00001111)
664 (op :fields (list (byte 7 9) (byte 3 19)))
665 (width :field (byte 1 8) :type 'width)
666 (reg/mem :fields (list (byte 2 22) (byte 3 16))
667 :type 'sized-reg/mem)
671 (sb!disassem:define-instruction-format (ext-reg/mem-imm 24
672 :include 'ext-reg/mem
674 '(:name :tab reg/mem ", " imm))
675 (imm :type 'imm-data))
677 ;;;; This section was added by jrd, for fp instructions.
679 ;;; regular fp inst to/from registers/memory
680 (sb!disassem:define-instruction-format (floating-point 16
682 `(:name :tab reg/mem))
683 (prefix :field (byte 5 3) :value #b11011)
684 (op :fields (list (byte 3 0) (byte 3 11)))
685 (reg/mem :fields (list (byte 2 14) (byte 3 8)) :type 'reg/mem))
687 ;;; fp insn to/from fp reg
688 (sb!disassem:define-instruction-format (floating-point-fp 16
689 :default-printer `(:name :tab fp-reg))
690 (prefix :field (byte 5 3) :value #b11011)
691 (suffix :field (byte 2 14) :value #b11)
692 (op :fields (list (byte 3 0) (byte 3 11)))
693 (fp-reg :field (byte 3 8) :type 'fp-reg))
695 ;;; fp insn to/from fp reg, with the reversed source/destination flag.
696 (sb!disassem:define-instruction-format
697 (floating-point-fp-d 16
698 :default-printer `(:name :tab ,(swap-if 'd "ST0" ", " 'fp-reg)))
699 (prefix :field (byte 5 3) :value #b11011)
700 (suffix :field (byte 2 14) :value #b11)
701 (op :fields (list (byte 2 0) (byte 3 11)))
702 (d :field (byte 1 2))
703 (fp-reg :field (byte 3 8) :type 'fp-reg))
706 ;;; (added by (?) pfw)
707 ;;; fp no operand isns
708 (sb!disassem:define-instruction-format (floating-point-no 16
709 :default-printer '(:name))
710 (prefix :field (byte 8 0) :value #b11011001)
711 (suffix :field (byte 3 13) :value #b111)
712 (op :field (byte 5 8)))
714 (sb!disassem:define-instruction-format (floating-point-3 16
715 :default-printer '(:name))
716 (prefix :field (byte 5 3) :value #b11011)
717 (suffix :field (byte 2 14) :value #b11)
718 (op :fields (list (byte 3 0) (byte 6 8))))
720 (sb!disassem:define-instruction-format (floating-point-5 16
721 :default-printer '(:name))
722 (prefix :field (byte 8 0) :value #b11011011)
723 (suffix :field (byte 3 13) :value #b111)
724 (op :field (byte 5 8)))
726 (sb!disassem:define-instruction-format (floating-point-st 16
727 :default-printer '(:name))
728 (prefix :field (byte 8 0) :value #b11011111)
729 (suffix :field (byte 3 13) :value #b111)
730 (op :field (byte 5 8)))
732 (sb!disassem:define-instruction-format (string-op 8
734 :default-printer '(:name width)))
736 (sb!disassem:define-instruction-format (rex-string-op 16
738 :default-printer '(:name width)))
740 (sb!disassem:define-instruction-format (short-cond-jump 16)
741 (op :field (byte 4 4))
742 (cc :field (byte 4 0) :type 'condition-code)
743 (label :field (byte 8 8) :type 'displacement))
745 (sb!disassem:define-instruction-format (short-jump 16
746 :default-printer '(:name :tab label))
747 (const :field (byte 4 4) :value #b1110)
748 (op :field (byte 4 0))
749 (label :field (byte 8 8) :type 'displacement))
751 (sb!disassem:define-instruction-format (near-cond-jump 16)
752 (op :fields (list (byte 8 0) (byte 4 12)) :value '(#b00001111 #b1000))
753 (cc :field (byte 4 8) :type 'condition-code)
754 ;; The disassembler currently doesn't let you have an instruction > 32 bits
755 ;; long, so we fake it by using a prefilter to read the offset.
756 (label :type 'displacement
757 :prefilter (lambda (value dstate)
758 (declare (ignore value)) ; always nil anyway
759 (sb!disassem:read-signed-suffix 32 dstate))))
761 (sb!disassem:define-instruction-format (near-jump 8
762 :default-printer '(:name :tab label))
763 (op :field (byte 8 0))
764 ;; The disassembler currently doesn't let you have an instruction > 32 bits
765 ;; long, so we fake it by using a prefilter to read the address.
766 (label :type 'displacement
767 :prefilter (lambda (value dstate)
768 (declare (ignore value)) ; always nil anyway
769 (sb!disassem:read-signed-suffix 32 dstate))))
772 (sb!disassem:define-instruction-format (cond-set 24
773 :default-printer '('set cc :tab reg/mem))
774 (prefix :field (byte 8 0) :value #b00001111)
775 (op :field (byte 4 12) :value #b1001)
776 (cc :field (byte 4 8) :type 'condition-code)
777 (reg/mem :fields (list (byte 2 22) (byte 3 16))
779 (reg :field (byte 3 19) :value #b000))
781 (sb!disassem:define-instruction-format (cond-move 24
783 '('cmov cc :tab reg ", " reg/mem))
784 (prefix :field (byte 8 0) :value #b00001111)
785 (op :field (byte 4 12) :value #b0100)
786 (cc :field (byte 4 8) :type 'condition-code)
787 (reg/mem :fields (list (byte 2 22) (byte 3 16))
789 (reg :field (byte 3 19) :type 'reg))
791 (sb!disassem:define-instruction-format (enter-format 32
792 :default-printer '(:name
794 (:unless (:constant 0)
796 (op :field (byte 8 0))
797 (disp :field (byte 16 8))
798 (level :field (byte 8 24)))
800 ;;; Single byte instruction with an immediate byte argument.
801 (sb!disassem:define-instruction-format (byte-imm 16
802 :default-printer '(:name :tab code))
803 (op :field (byte 8 0))
804 (code :field (byte 8 8)))
806 ;;;; primitive emitters
808 (define-bitfield-emitter emit-word 16
811 (define-bitfield-emitter emit-dword 32
814 (define-bitfield-emitter emit-qword 64
817 (define-bitfield-emitter emit-byte-with-reg 8
818 (byte 5 3) (byte 3 0))
820 (define-bitfield-emitter emit-mod-reg-r/m-byte 8
821 (byte 2 6) (byte 3 3) (byte 3 0))
823 (define-bitfield-emitter emit-sib-byte 8
824 (byte 2 6) (byte 3 3) (byte 3 0))
826 (define-bitfield-emitter emit-rex-byte 8
827 (byte 4 4) (byte 1 3) (byte 1 2) (byte 1 1) (byte 1 0))
833 (defun emit-absolute-fixup (segment fixup &optional quad-p)
834 (note-fixup segment (if quad-p :absolute64 :absolute) fixup)
835 (let ((offset (fixup-offset fixup)))
837 (emit-back-patch segment
839 (lambda (segment posn)
840 (declare (ignore posn))
841 (let ((val (- (+ (component-header-length)
842 (or (label-position offset)
844 other-pointer-lowtag)))
846 (emit-qword segment val )
847 (emit-dword segment val )))))
849 (emit-qword segment (or offset 0))
850 (emit-dword segment (or offset 0))))))
852 (defun emit-relative-fixup (segment fixup)
853 (note-fixup segment :relative fixup)
854 (emit-dword segment (or (fixup-offset fixup) 0)))
857 ;;;; the effective-address (ea) structure
859 (defun reg-tn-encoding (tn)
860 (declare (type tn tn))
861 (aver (member (sb-name (sc-sb (tn-sc tn))) '(registers float-registers)))
862 ;; ea only has space for three bits of register number: regs r8
863 ;; and up are selected by a REX prefix byte which caller is responsible
864 ;; for having emitted where necessary already
865 (cond ((fp-reg-tn-p tn)
866 (mod (tn-offset tn) 8))
868 (let ((offset (mod (tn-offset tn) 16)))
869 (logior (ash (logand offset 1) 2)
872 (defstruct (ea (:constructor make-ea (size &key base index scale disp))
874 ;; note that we can represent an EA qith a QWORD size, but EMIT-EA
875 ;; can't actually emit it on its own: caller also needs to emit REX
877 (size nil :type (member :byte :word :dword :qword))
878 (base nil :type (or tn null))
879 (index nil :type (or tn null))
880 (scale 1 :type (member 1 2 4 8))
881 (disp 0 :type (or (unsigned-byte 32) (signed-byte 32) fixup)))
882 (def!method print-object ((ea ea) stream)
883 (cond ((or *print-escape* *print-readably*)
884 (print-unreadable-object (ea stream :type t)
886 "~S~@[ base=~S~]~@[ index=~S~]~@[ scale=~S~]~@[ disp=~S~]"
890 (let ((scale (ea-scale ea)))
891 (if (= scale 1) nil scale))
894 (format stream "~A PTR [" (symbol-name (ea-size ea)))
896 (write-string (sb!c::location-print-name (ea-base ea)) stream)
898 (write-string "+" stream)))
900 (write-string (sb!c::location-print-name (ea-index ea)) stream))
901 (unless (= (ea-scale ea) 1)
902 (format stream "*~A" (ea-scale ea)))
903 (typecase (ea-disp ea)
906 (format stream "~@D" (ea-disp ea)))
908 (format stream "+~A" (ea-disp ea))))
909 (write-char #\] stream))))
911 (defun emit-constant-tn-rip (segment constant-tn reg)
912 ;; AMD64 doesn't currently have a code object register to use as a
913 ;; base register for constant access. Instead we use RIP-relative
914 ;; addressing. The offset from the SIMPLE-FUN-HEADER to the instruction
915 ;; is passed to the backpatch callback. In addition we need the offset
916 ;; from the start of the function header to the slot in the CODE-HEADER
917 ;; that stores the constant. Since we don't know where the code header
918 ;; starts, instead count backwards from the function header.
919 (let* ((2comp (component-info *component-being-compiled*))
920 (constants (ir2-component-constants 2comp))
921 (len (length constants))
922 ;; Both CODE-HEADER and SIMPLE-FUN-HEADER are 16-byte aligned.
923 ;; If there are an even amount of constants, there will be
924 ;; an extra qword of padding before the function header, which
925 ;; needs to be adjusted for. XXX: This will break if new slots
926 ;; are added to the code header.
927 (offset (* (- (+ len (if (evenp len)
930 (tn-offset constant-tn))
932 ;; RIP-relative addressing
933 (emit-mod-reg-r/m-byte segment #b00 reg #b101)
934 (emit-back-patch segment
936 (lambda (segment posn)
937 ;; The addressing is relative to end of instruction,
938 ;; i.e. the end of this dword. Hence the + 4.
939 (emit-dword segment (+ 4 (- (+ offset posn)))))))
942 (defun emit-label-rip (segment fixup reg)
943 (let ((label (fixup-offset fixup)))
944 ;; RIP-relative addressing
945 (emit-mod-reg-r/m-byte segment #b00 reg #b101)
946 (emit-back-patch segment
948 (lambda (segment posn)
949 (emit-dword segment (- (label-position label)
953 (defun emit-ea (segment thing reg &optional allow-constants)
956 ;; this would be eleganter if we had a function that would create
958 (ecase (sb-name (sc-sb (tn-sc thing)))
959 ((registers float-registers)
960 (emit-mod-reg-r/m-byte segment #b11 reg (reg-tn-encoding thing)))
962 ;; Convert stack tns into an index off RBP.
963 (let ((disp (- (* (1+ (tn-offset thing)) n-word-bytes))))
964 (cond ((< -128 disp 127)
965 (emit-mod-reg-r/m-byte segment #b01 reg #b101)
966 (emit-byte segment disp))
968 (emit-mod-reg-r/m-byte segment #b10 reg #b101)
969 (emit-dword segment disp)))))
971 (unless allow-constants
974 "Constant TNs can only be directly used in MOV, PUSH, and CMP."))
975 (emit-constant-tn-rip segment thing reg))))
977 (let* ((base (ea-base thing))
978 (index (ea-index thing))
979 (scale (ea-scale thing))
980 (disp (ea-disp thing))
981 (mod (cond ((or (null base)
983 (not (= (reg-tn-encoding base) #b101))))
985 ((and (fixnump disp) (<= -128 disp 127))
989 (r/m (cond (index #b100)
991 (t (reg-tn-encoding base)))))
992 (when (and (= mod 0) (= r/m #b101))
993 ;; this is rip-relative in amd64, so we'll use a sib instead
994 (setf r/m #b100 scale 1))
995 (emit-mod-reg-r/m-byte segment mod reg r/m)
997 (let ((ss (1- (integer-length scale)))
998 (index (if (null index)
1000 (let ((index (reg-tn-encoding index)))
1002 (error "can't index off of ESP")
1004 (base (if (null base)
1006 (reg-tn-encoding base))))
1007 (emit-sib-byte segment ss index base)))
1009 (emit-byte segment disp))
1010 ((or (= mod #b10) (null base))
1012 (emit-absolute-fixup segment disp)
1013 (emit-dword segment disp))))))
1015 (typecase (fixup-offset thing)
1017 (emit-label-rip segment thing reg))
1019 (emit-mod-reg-r/m-byte segment #b00 reg #b100)
1020 (emit-sib-byte segment 0 #b100 #b101)
1021 (emit-absolute-fixup segment thing))))))
1023 (defun fp-reg-tn-p (thing)
1025 (eq (sb-name (sc-sb (tn-sc thing))) 'float-registers)))
1027 ;;; like the above, but for fp-instructions--jrd
1028 (defun emit-fp-op (segment thing op)
1029 (if (fp-reg-tn-p thing)
1030 (emit-byte segment (dpb op (byte 3 3) (dpb (tn-offset thing)
1033 (emit-ea segment thing op)))
1035 (defun byte-reg-p (thing)
1037 (eq (sb-name (sc-sb (tn-sc thing))) 'registers)
1038 (member (sc-name (tn-sc thing)) *byte-sc-names*)
1041 (defun byte-ea-p (thing)
1043 (ea (eq (ea-size thing) :byte))
1045 (and (member (sc-name (tn-sc thing)) *byte-sc-names*) t))
1048 (defun word-reg-p (thing)
1050 (eq (sb-name (sc-sb (tn-sc thing))) 'registers)
1051 (member (sc-name (tn-sc thing)) *word-sc-names*)
1054 (defun word-ea-p (thing)
1056 (ea (eq (ea-size thing) :word))
1057 (tn (and (member (sc-name (tn-sc thing)) *word-sc-names*) t))
1060 (defun dword-reg-p (thing)
1062 (eq (sb-name (sc-sb (tn-sc thing))) 'registers)
1063 (member (sc-name (tn-sc thing)) *dword-sc-names*)
1066 (defun dword-ea-p (thing)
1068 (ea (eq (ea-size thing) :dword))
1070 (and (member (sc-name (tn-sc thing)) *dword-sc-names*) t))
1073 (defun qword-reg-p (thing)
1075 (eq (sb-name (sc-sb (tn-sc thing))) 'registers)
1076 (member (sc-name (tn-sc thing)) *qword-sc-names*)
1079 (defun qword-ea-p (thing)
1081 (ea (eq (ea-size thing) :qword))
1083 (and (member (sc-name (tn-sc thing)) *qword-sc-names*) t))
1086 (defun register-p (thing)
1088 (eq (sb-name (sc-sb (tn-sc thing))) 'registers)))
1090 (defun accumulator-p (thing)
1091 (and (register-p thing)
1092 (= (tn-offset thing) 0)))
1097 (def!constant +operand-size-prefix-byte+ #b01100110)
1099 (defun maybe-emit-operand-size-prefix (segment size)
1100 (unless (or (eq size :byte)
1101 (eq size :qword) ; REX prefix handles this
1102 (eq size +default-operand-size+))
1103 (emit-byte segment +operand-size-prefix-byte+)))
1105 (defun maybe-emit-rex-prefix (segment operand-size r x b)
1107 (if (and r (> (tn-offset r)
1108 ;; offset of r8 is 16, offset of xmm8 is 8
1114 (let ((rex-w (if (eq operand-size :qword) 1 0))
1118 (when (or (eq operand-size :byte) ;; REX needed to access SIL/DIL
1119 (not (zerop (logior rex-w rex-r rex-x rex-b))))
1120 (emit-rex-byte segment #b0100 rex-w rex-r rex-x rex-b)))))
1122 (defun maybe-emit-rex-for-ea (segment ea reg &key operand-size)
1123 (let ((ea-p (ea-p ea))) ;emit-ea can also be called with a tn
1124 (maybe-emit-rex-prefix segment
1125 (or operand-size (operand-size ea))
1127 (and ea-p (ea-index ea))
1128 (cond (ea-p (ea-base ea))
1130 (member (sb-name (sc-sb (tn-sc ea)))
1131 '(float-registers registers)))
1135 (defun operand-size (thing)
1138 ;; FIXME: might as well be COND instead of having to use #. readmacro
1139 ;; to hack up the code
1140 (case (sc-name (tn-sc thing))
1149 ;; added by jrd: float-registers is a separate size (?)
1152 (#.*double-sc-names*
1155 (error "can't tell the size of ~S ~S" thing (sc-name (tn-sc thing))))))
1159 ;; GNA. Guess who spelt "flavor" correctly first time round?
1160 ;; There's a strong argument in my mind to change all uses of
1161 ;; "flavor" to "kind": and similarly with some misguided uses of
1162 ;; "type" here and there. -- CSR, 2005-01-06.
1163 (case (fixup-flavor thing)
1164 ((:foreign-dataref) :qword)))
1168 (defun matching-operand-size (dst src)
1169 (let ((dst-size (operand-size dst))
1170 (src-size (operand-size src)))
1173 (if (eq dst-size src-size)
1175 (error "size mismatch: ~S is a ~S and ~S is a ~S."
1176 dst dst-size src src-size))
1180 (error "can't tell the size of either ~S or ~S" dst src)))))
1182 (defun emit-sized-immediate (segment size value &optional quad-p)
1185 (emit-byte segment value))
1187 (emit-word segment value))
1189 ;; except in a very few cases (MOV instructions A1,A3,B8) we expect
1190 ;; dword data bytes even when 64 bit work is being done. So, mostly
1191 ;; we treat quad constants as dwords.
1192 (if (and quad-p (eq size :qword))
1193 (emit-qword segment value)
1194 (emit-dword segment value)))))
1196 ;;;; general data transfer
1198 (define-instruction mov (segment dst src)
1199 ;; immediate to register
1200 (:printer reg ((op #b1011) (imm nil :type 'imm-data))
1201 '(:name :tab reg ", " imm))
1202 (:printer rex-reg ((op #b10111) (imm nil :type 'imm-data))
1203 '(:name :tab reg ", " imm))
1204 ;; absolute mem to/from accumulator
1205 (:printer simple-dir ((op #b101000) (imm nil :type 'imm-addr))
1206 `(:name :tab ,(swap-if 'dir 'accum ", " '("[" imm "]"))))
1207 ;; register to/from register/memory
1208 (:printer reg-reg/mem-dir ((op #b100010)))
1209 (:printer rex-reg-reg/mem-dir ((op #b100010)))
1210 ;; immediate to register/memory
1211 (:printer reg/mem-imm ((op '(#b1100011 #b000))))
1212 ;; doesn't work for 8-bit register yet
1213 (:printer rex-reg/mem-imm ((op '(#b11000111 #b000))))
1216 (let ((size (matching-operand-size dst src)))
1217 (maybe-emit-operand-size-prefix segment size)
1218 (cond ((register-p dst)
1219 (cond ((integerp src)
1220 (maybe-emit-rex-prefix segment size nil nil dst)
1221 (emit-byte-with-reg segment
1225 (reg-tn-encoding dst))
1226 (emit-sized-immediate segment size src (eq size :qword)))
1228 (maybe-emit-rex-for-ea segment src dst)
1233 (emit-ea segment src (reg-tn-encoding dst) t))))
1235 ;; C7 only deals with 32 bit immediates even if register is
1236 ;; 64 bit: only b8-bf use 64 bit immediates
1237 (maybe-emit-rex-for-ea segment dst nil)
1238 (cond ((typep src '(or (signed-byte 32) (unsigned-byte 32)))
1240 (if (eq size :byte) #b11000110 #b11000111))
1241 (emit-ea segment dst #b000)
1242 (emit-sized-immediate segment
1243 (case size (:qword :dword) (t size))
1248 (maybe-emit-rex-for-ea segment dst src)
1249 (emit-byte segment (if (eq size :byte) #b10001000 #b10001001))
1250 (emit-ea segment dst (reg-tn-encoding src)))
1252 ;; Generally we can't MOV a fixupped value into an EA, since
1253 ;; MOV on non-registers can only take a 32-bit immediate arg.
1254 ;; Make an exception for :FOREIGN fixups (pretty much just
1255 ;; the runtime asm, since other foreign calls go through the
1256 ;; the linkage table) and for linkage table references, since
1257 ;; these should always end up in low memory.
1258 (aver (or (eq (fixup-flavor src) :foreign)
1259 (eq (fixup-flavor src) :foreign-dataref)
1260 (eq (ea-size dst) :dword)))
1261 (maybe-emit-rex-for-ea segment dst nil)
1262 (emit-byte segment #b11000111)
1263 (emit-ea segment dst #b000)
1264 (emit-absolute-fixup segment src))
1266 (error "bogus arguments to MOV: ~S ~S" dst src))))))
1268 (defun emit-move-with-extension (segment dst src signed-p)
1269 (aver (register-p dst))
1270 (let ((dst-size (operand-size dst))
1271 (src-size (operand-size src))
1272 (opcode (if signed-p #b10111110 #b10110110)))
1275 (aver (eq src-size :byte))
1276 (maybe-emit-operand-size-prefix segment :word)
1277 (emit-byte segment #b00001111)
1278 (emit-byte segment opcode)
1279 (emit-ea segment src (reg-tn-encoding dst)))
1283 (maybe-emit-operand-size-prefix segment :dword)
1284 (maybe-emit-rex-for-ea segment src dst
1285 :operand-size (operand-size dst))
1286 (emit-byte segment #b00001111)
1287 (emit-byte segment opcode)
1288 (emit-ea segment src (reg-tn-encoding dst)))
1290 (maybe-emit-rex-for-ea segment src dst
1291 :operand-size (operand-size dst))
1292 (emit-byte segment #b00001111)
1293 (emit-byte segment (logior opcode 1))
1294 (emit-ea segment src (reg-tn-encoding dst)))
1296 (aver (eq dst-size :qword))
1297 ;; dst is in reg, src is in modrm
1298 (let ((ea-p (ea-p src)))
1299 (maybe-emit-rex-prefix segment (if signed-p :qword :dword) dst
1300 (and ea-p (ea-index src))
1301 (cond (ea-p (ea-base src))
1304 (emit-byte segment #x63) ;movsxd
1305 ;;(emit-byte segment opcode)
1306 (emit-ea segment src (reg-tn-encoding dst)))))))))
1308 (define-instruction movsx (segment dst src)
1309 (:printer ext-reg-reg/mem ((op #b1011111) (reg nil :type 'word-reg)))
1310 (:emitter (emit-move-with-extension segment dst src :signed)))
1312 (define-instruction movzx (segment dst src)
1313 (:printer ext-reg-reg/mem ((op #b1011011) (reg nil :type 'word-reg)))
1314 (:emitter (emit-move-with-extension segment dst src nil)))
1316 (define-instruction movsxd (segment dst src)
1317 (:printer reg-reg/mem ((op #x63) (reg nil :type 'word-reg)))
1318 (:emitter (emit-move-with-extension segment dst src :signed)))
1320 ;;; this is not a real amd64 instruction, of course
1321 (define-instruction movzxd (segment dst src)
1322 ; (:printer reg-reg/mem ((op #x63) (reg nil :type 'word-reg)))
1323 (:emitter (emit-move-with-extension segment dst src nil)))
1325 (define-instruction push (segment src)
1327 (:printer reg-no-width ((op #b01010)))
1328 (:printer rex-reg-no-width ((op #b01010)))
1330 (:printer reg/mem ((op '(#b1111111 #b110)) (width 1)))
1331 (:printer rex-reg/mem ((op '(#b11111111 #b110))))
1333 (:printer byte ((op #b01101010) (imm nil :type 'signed-imm-byte))
1335 (:printer byte ((op #b01101000) (imm nil :type 'imm-word))
1337 ;; ### segment registers?
1340 (cond ((integerp src)
1341 (cond ((<= -128 src 127)
1342 (emit-byte segment #b01101010)
1343 (emit-byte segment src))
1345 ;; AMD64 manual says no REX needed but is unclear
1346 ;; whether it expects 32 or 64 bit immediate here
1347 (emit-byte segment #b01101000)
1348 (emit-dword segment src))))
1350 (let ((size (operand-size src)))
1351 (aver (not (eq size :byte)))
1352 (maybe-emit-operand-size-prefix segment size)
1353 (maybe-emit-rex-for-ea segment src nil)
1354 (cond ((register-p src)
1355 (emit-byte-with-reg segment #b01010 (reg-tn-encoding src)))
1357 (emit-byte segment #b11111111)
1358 (emit-ea segment src #b110 t))))))))
1360 (define-instruction pusha (segment)
1361 (:printer byte ((op #b01100000)))
1363 (emit-byte segment #b01100000)))
1365 (define-instruction pop (segment dst)
1366 (:printer reg-no-width ((op #b01011)))
1367 (:printer rex-reg-no-width ((op #b01011)))
1368 (:printer reg/mem ((op '(#b1000111 #b000)) (width 1)))
1369 (:printer rex-reg/mem ((op '(#b10001111 #b000))))
1371 (let ((size (operand-size dst)))
1372 (aver (not (eq size :byte)))
1373 (maybe-emit-operand-size-prefix segment size)
1374 (maybe-emit-rex-for-ea segment dst nil)
1375 (cond ((register-p dst)
1376 (emit-byte-with-reg segment #b01011 (reg-tn-encoding dst)))
1378 (emit-byte segment #b10001111)
1379 (emit-ea segment dst #b000))))))
1381 (define-instruction popa (segment)
1382 (:printer byte ((op #b01100001)))
1384 (emit-byte segment #b01100001)))
1386 (define-instruction xchg (segment operand1 operand2)
1387 ;; Register with accumulator.
1388 (:printer reg-no-width ((op #b10010)) '(:name :tab accum ", " reg))
1389 ;; Register/Memory with Register.
1390 (:printer reg-reg/mem ((op #b1000011)))
1391 ;; doesn't work for 8-bit register yet
1392 (:printer rex-reg-reg/mem ((op #b10000111)))
1394 (let ((size (matching-operand-size operand1 operand2)))
1395 (maybe-emit-operand-size-prefix segment size)
1396 (labels ((xchg-acc-with-something (acc something)
1397 (if (and (not (eq size :byte)) (register-p something))
1399 (maybe-emit-rex-for-ea segment acc something)
1400 (emit-byte-with-reg segment
1402 (reg-tn-encoding something)))
1403 (xchg-reg-with-something acc something)))
1404 (xchg-reg-with-something (reg something)
1405 (maybe-emit-rex-for-ea segment something reg)
1406 (emit-byte segment (if (eq size :byte) #b10000110 #b10000111))
1407 (emit-ea segment something (reg-tn-encoding reg))))
1408 (cond ((accumulator-p operand1)
1409 (xchg-acc-with-something operand1 operand2))
1410 ((accumulator-p operand2)
1411 (xchg-acc-with-something operand2 operand1))
1412 ((register-p operand1)
1413 (xchg-reg-with-something operand1 operand2))
1414 ((register-p operand2)
1415 (xchg-reg-with-something operand2 operand1))
1417 (error "bogus args to XCHG: ~S ~S" operand1 operand2)))))))
1419 (define-instruction lea (segment dst src)
1420 (:printer rex-reg-reg/mem ((op #b10001101)))
1421 (:printer reg-reg/mem ((op #b1000110) (width 1)))
1423 (aver (or (dword-reg-p dst) (qword-reg-p dst)))
1424 (maybe-emit-rex-for-ea segment src dst
1425 :operand-size :qword)
1426 (emit-byte segment #b10001101)
1427 (emit-ea segment src (reg-tn-encoding dst))))
1429 (define-instruction cmpxchg (segment dst src)
1430 ;; Register/Memory with Register.
1431 (:printer ext-reg-reg/mem ((op #b1011000)) '(:name :tab reg/mem ", " reg))
1433 (aver (register-p src))
1434 (let ((size (matching-operand-size src dst)))
1435 (maybe-emit-operand-size-prefix segment size)
1436 (maybe-emit-rex-for-ea segment dst src)
1437 (emit-byte segment #b00001111)
1438 (emit-byte segment (if (eq size :byte) #b10110000 #b10110001))
1439 (emit-ea segment dst (reg-tn-encoding src)))))
1443 (define-instruction fs-segment-prefix (segment)
1445 (emit-byte segment #x64)))
1447 ;;;; flag control instructions
1449 ;;; CLC -- Clear Carry Flag.
1450 (define-instruction clc (segment)
1451 (:printer byte ((op #b11111000)))
1453 (emit-byte segment #b11111000)))
1455 ;;; CLD -- Clear Direction Flag.
1456 (define-instruction cld (segment)
1457 (:printer byte ((op #b11111100)))
1459 (emit-byte segment #b11111100)))
1461 ;;; CLI -- Clear Iterrupt Enable Flag.
1462 (define-instruction cli (segment)
1463 (:printer byte ((op #b11111010)))
1465 (emit-byte segment #b11111010)))
1467 ;;; CMC -- Complement Carry Flag.
1468 (define-instruction cmc (segment)
1469 (:printer byte ((op #b11110101)))
1471 (emit-byte segment #b11110101)))
1473 ;;; LAHF -- Load AH into flags.
1474 (define-instruction lahf (segment)
1475 (:printer byte ((op #b10011111)))
1477 (emit-byte segment #b10011111)))
1479 ;;; POPF -- Pop flags.
1480 (define-instruction popf (segment)
1481 (:printer byte ((op #b10011101)))
1483 (emit-byte segment #b10011101)))
1485 ;;; PUSHF -- push flags.
1486 (define-instruction pushf (segment)
1487 (:printer byte ((op #b10011100)))
1489 (emit-byte segment #b10011100)))
1491 ;;; SAHF -- Store AH into flags.
1492 (define-instruction sahf (segment)
1493 (:printer byte ((op #b10011110)))
1495 (emit-byte segment #b10011110)))
1497 ;;; STC -- Set Carry Flag.
1498 (define-instruction stc (segment)
1499 (:printer byte ((op #b11111001)))
1501 (emit-byte segment #b11111001)))
1503 ;;; STD -- Set Direction Flag.
1504 (define-instruction std (segment)
1505 (:printer byte ((op #b11111101)))
1507 (emit-byte segment #b11111101)))
1509 ;;; STI -- Set Interrupt Enable Flag.
1510 (define-instruction sti (segment)
1511 (:printer byte ((op #b11111011)))
1513 (emit-byte segment #b11111011)))
1517 (defun emit-random-arith-inst (name segment dst src opcode
1518 &optional allow-constants)
1519 (let ((size (matching-operand-size dst src)))
1520 (maybe-emit-operand-size-prefix segment size)
1523 (cond ((and (not (eq size :byte)) (<= -128 src 127))
1524 (maybe-emit-rex-for-ea segment dst nil)
1525 (emit-byte segment #b10000011)
1526 (emit-ea segment dst opcode allow-constants)
1527 (emit-byte segment src))
1528 ((accumulator-p dst)
1529 (maybe-emit-rex-for-ea segment dst nil)
1536 (emit-sized-immediate segment size src))
1538 (maybe-emit-rex-for-ea segment dst nil)
1539 (emit-byte segment (if (eq size :byte) #b10000000 #b10000001))
1540 (emit-ea segment dst opcode allow-constants)
1541 (emit-sized-immediate segment size src))))
1543 (maybe-emit-rex-for-ea segment dst src)
1547 (if (eq size :byte) #b00000000 #b00000001)))
1548 (emit-ea segment dst (reg-tn-encoding src) allow-constants))
1550 (maybe-emit-rex-for-ea segment src dst)
1554 (if (eq size :byte) #b00000010 #b00000011)))
1555 (emit-ea segment src (reg-tn-encoding dst) allow-constants))
1557 (error "bogus operands to ~A" name)))))
1559 (eval-when (:compile-toplevel :execute)
1560 (defun arith-inst-printer-list (subop)
1561 `((accum-imm ((op ,(dpb subop (byte 3 2) #b0000010))))
1562 (rex-accum-imm ((op ,(dpb subop (byte 3 2) #b0000010))))
1563 (reg/mem-imm ((op (#b1000000 ,subop))))
1564 (rex-reg/mem-imm ((op (#b10000001 ,subop))))
1565 (reg/mem-imm ((op (#b1000001 ,subop))
1566 (imm nil :type signed-imm-byte)))
1567 (rex-reg/mem-imm ((op (#b10000011 ,subop))
1568 (imm nil :type signed-imm-byte)))
1569 (reg-reg/mem-dir ((op ,(dpb subop (byte 3 1) #b000000))))
1570 (rex-reg-reg/mem-dir ((op ,(dpb subop (byte 3 1) #b000000))))))
1573 (define-instruction add (segment dst src)
1574 (:printer-list (arith-inst-printer-list #b000))
1575 (:emitter (emit-random-arith-inst "ADD" segment dst src #b000)))
1577 (define-instruction adc (segment dst src)
1578 (:printer-list (arith-inst-printer-list #b010))
1579 (:emitter (emit-random-arith-inst "ADC" segment dst src #b010)))
1581 (define-instruction sub (segment dst src)
1582 (:printer-list (arith-inst-printer-list #b101))
1583 (:emitter (emit-random-arith-inst "SUB" segment dst src #b101)))
1585 (define-instruction sbb (segment dst src)
1586 (:printer-list (arith-inst-printer-list #b011))
1587 (:emitter (emit-random-arith-inst "SBB" segment dst src #b011)))
1589 (define-instruction cmp (segment dst src)
1590 (:printer-list (arith-inst-printer-list #b111))
1591 (:emitter (emit-random-arith-inst "CMP" segment dst src #b111 t)))
1593 (define-instruction inc (segment dst)
1595 (:printer modrm-reg-no-width ((modrm-reg #b000)))
1597 ;; (:printer rex-reg/mem ((op '(#b11111111 #b001))))
1598 (:printer reg/mem ((op '(#b1111111 #b000))))
1600 (let ((size (operand-size dst)))
1601 (maybe-emit-operand-size-prefix segment size)
1602 (cond #+nil ; these opcodes become REX prefixes in x86-64
1603 ((and (not (eq size :byte)) (register-p dst))
1604 (emit-byte-with-reg segment #b01000 (reg-tn-encoding dst)))
1606 (maybe-emit-rex-for-ea segment dst nil)
1607 (emit-byte segment (if (eq size :byte) #b11111110 #b11111111))
1608 (emit-ea segment dst #b000))))))
1610 (define-instruction dec (segment dst)
1612 (:printer modrm-reg-no-width ((modrm-reg #b001)))
1614 (:printer reg/mem ((op '(#b1111111 #b001))))
1616 (let ((size (operand-size dst)))
1617 (maybe-emit-operand-size-prefix segment size)
1619 ((and (not (eq size :byte)) (register-p dst))
1620 (emit-byte-with-reg segment #b01001 (reg-tn-encoding dst)))
1622 (maybe-emit-rex-for-ea segment dst nil)
1623 (emit-byte segment (if (eq size :byte) #b11111110 #b11111111))
1624 (emit-ea segment dst #b001))))))
1626 (define-instruction neg (segment dst)
1627 (:printer reg/mem ((op '(#b1111011 #b011))))
1629 (let ((size (operand-size dst)))
1630 (maybe-emit-operand-size-prefix segment size)
1631 (maybe-emit-rex-for-ea segment dst nil)
1632 (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
1633 (emit-ea segment dst #b011))))
1635 (define-instruction mul (segment dst src)
1636 (:printer accum-reg/mem ((op '(#b1111011 #b100))))
1638 (let ((size (matching-operand-size dst src)))
1639 (aver (accumulator-p dst))
1640 (maybe-emit-operand-size-prefix segment size)
1641 (maybe-emit-rex-for-ea segment src nil)
1642 (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
1643 (emit-ea segment src #b100))))
1645 (define-instruction imul (segment dst &optional src1 src2)
1646 (:printer accum-reg/mem ((op '(#b1111011 #b101))))
1647 (:printer ext-reg-reg/mem ((op #b1010111)))
1648 (:printer reg-reg/mem ((op #b0110100) (width 1) (imm nil :type 'imm-word))
1649 '(:name :tab reg ", " reg/mem ", " imm))
1650 (:printer reg-reg/mem ((op #b0110101) (width 1)
1651 (imm nil :type 'signed-imm-byte))
1652 '(:name :tab reg ", " reg/mem ", " imm))
1654 (flet ((r/m-with-immed-to-reg (reg r/m immed)
1655 (let* ((size (matching-operand-size reg r/m))
1656 (sx (and (not (eq size :byte)) (<= -128 immed 127))))
1657 (maybe-emit-operand-size-prefix segment size)
1658 (maybe-emit-rex-for-ea segment r/m reg)
1659 (emit-byte segment (if sx #b01101011 #b01101001))
1660 (emit-ea segment r/m (reg-tn-encoding reg))
1662 (emit-byte segment immed)
1663 (emit-sized-immediate segment size immed)))))
1665 (r/m-with-immed-to-reg dst src1 src2))
1668 (r/m-with-immed-to-reg dst dst src1)
1669 (let ((size (matching-operand-size dst src1)))
1670 (maybe-emit-operand-size-prefix segment size)
1671 (maybe-emit-rex-for-ea segment src1 dst)
1672 (emit-byte segment #b00001111)
1673 (emit-byte segment #b10101111)
1674 (emit-ea segment src1 (reg-tn-encoding dst)))))
1676 (let ((size (operand-size dst)))
1677 (maybe-emit-operand-size-prefix segment size)
1678 (maybe-emit-rex-for-ea segment dst nil)
1679 (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
1680 (emit-ea segment dst #b101)))))))
1682 (define-instruction div (segment dst src)
1683 (:printer accum-reg/mem ((op '(#b1111011 #b110))))
1685 (let ((size (matching-operand-size dst src)))
1686 (aver (accumulator-p dst))
1687 (maybe-emit-operand-size-prefix segment size)
1688 (maybe-emit-rex-for-ea segment src nil)
1689 (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
1690 (emit-ea segment src #b110))))
1692 (define-instruction idiv (segment dst src)
1693 (:printer accum-reg/mem ((op '(#b1111011 #b111))))
1695 (let ((size (matching-operand-size dst src)))
1696 (aver (accumulator-p dst))
1697 (maybe-emit-operand-size-prefix segment size)
1698 (maybe-emit-rex-for-ea segment src nil)
1699 (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
1700 (emit-ea segment src #b111))))
1702 (define-instruction bswap (segment dst)
1703 (:printer ext-reg-no-width ((op #b11001)))
1705 (let ((size (operand-size dst)))
1706 (maybe-emit-rex-prefix segment size nil nil dst)
1707 (emit-byte segment #x0f)
1708 (emit-byte-with-reg segment #b11001 (reg-tn-encoding dst)))))
1710 ;;; CBW -- Convert Byte to Word. AX <- sign_xtnd(AL)
1711 (define-instruction cbw (segment)
1713 (maybe-emit-operand-size-prefix segment :word)
1714 (emit-byte segment #b10011000)))
1716 ;;; CWDE -- Convert Word To Double Word Extened. EAX <- sign_xtnd(AX)
1717 (define-instruction cwde (segment)
1719 (maybe-emit-operand-size-prefix segment :dword)
1720 (emit-byte segment #b10011000)))
1722 ;;; CWD -- Convert Word to Double Word. DX:AX <- sign_xtnd(AX)
1723 (define-instruction cwd (segment)
1725 (maybe-emit-operand-size-prefix segment :word)
1726 (emit-byte segment #b10011001)))
1728 ;;; CDQ -- Convert Double Word to Quad Word. EDX:EAX <- sign_xtnd(EAX)
1729 (define-instruction cdq (segment)
1730 (:printer byte ((op #b10011001)))
1732 (maybe-emit-operand-size-prefix segment :dword)
1733 (emit-byte segment #b10011001)))
1735 ;;; CQO -- Convert Quad or Octaword. RDX:RAX <- sign_xtnd(RAX)
1736 (define-instruction cqo (segment)
1738 (maybe-emit-rex-prefix segment :qword nil nil nil)
1739 (emit-byte segment #b10011001)))
1741 (define-instruction xadd (segment dst src)
1742 ;; Register/Memory with Register.
1743 (:printer ext-reg-reg/mem ((op #b1100000)) '(:name :tab reg/mem ", " reg))
1745 (aver (register-p src))
1746 (let ((size (matching-operand-size src dst)))
1747 (maybe-emit-operand-size-prefix segment size)
1748 (maybe-emit-rex-for-ea segment dst src)
1749 (emit-byte segment #b00001111)
1750 (emit-byte segment (if (eq size :byte) #b11000000 #b11000001))
1751 (emit-ea segment dst (reg-tn-encoding src)))))
1756 (defun emit-shift-inst (segment dst amount opcode)
1757 (let ((size (operand-size dst)))
1758 (maybe-emit-operand-size-prefix segment size)
1759 (multiple-value-bind (major-opcode immed)
1761 (:cl (values #b11010010 nil))
1762 (1 (values #b11010000 nil))
1763 (t (values #b11000000 t)))
1764 (maybe-emit-rex-for-ea segment dst nil)
1766 (if (eq size :byte) major-opcode (logior major-opcode 1)))
1767 (emit-ea segment dst opcode)
1769 (emit-byte segment amount)))))
1771 (eval-when (:compile-toplevel :execute)
1772 (defun shift-inst-printer-list (subop)
1773 `((reg/mem ((op (#b1101000 ,subop)))
1774 (:name :tab reg/mem ", 1"))
1775 (rex-reg/mem ((op (#b1101000 ,subop)))
1776 (:name :tab reg/mem ", 1"))
1777 (reg/mem ((op (#b1101001 ,subop)))
1778 (:name :tab reg/mem ", " 'cl))
1779 (rex-reg/mem ((op (#b1101001 ,subop)))
1780 (:name :tab reg/mem ", " 'cl))
1781 (reg/mem-imm ((op (#b1100000 ,subop))
1782 (imm nil :type signed-imm-byte)))
1783 (rex-reg/mem-imm ((op (#b11000001 ,subop))
1784 (imm nil :type signed-imm-byte))))))
1786 (define-instruction rol (segment dst amount)
1788 (shift-inst-printer-list #b000))
1790 (emit-shift-inst segment dst amount #b000)))
1792 (define-instruction ror (segment dst amount)
1794 (shift-inst-printer-list #b001))
1796 (emit-shift-inst segment dst amount #b001)))
1798 (define-instruction rcl (segment dst amount)
1800 (shift-inst-printer-list #b010))
1802 (emit-shift-inst segment dst amount #b010)))
1804 (define-instruction rcr (segment dst amount)
1806 (shift-inst-printer-list #b011))
1808 (emit-shift-inst segment dst amount #b011)))
1810 (define-instruction shl (segment dst amount)
1812 (shift-inst-printer-list #b100))
1814 (emit-shift-inst segment dst amount #b100)))
1816 (define-instruction shr (segment dst amount)
1818 (shift-inst-printer-list #b101))
1820 (emit-shift-inst segment dst amount #b101)))
1822 (define-instruction sar (segment dst amount)
1824 (shift-inst-printer-list #b111))
1826 (emit-shift-inst segment dst amount #b111)))
1828 (defun emit-double-shift (segment opcode dst src amt)
1829 (let ((size (matching-operand-size dst src)))
1830 (when (eq size :byte)
1831 (error "Double shifts can only be used with words."))
1832 (maybe-emit-operand-size-prefix segment size)
1833 (maybe-emit-rex-for-ea segment dst src)
1834 (emit-byte segment #b00001111)
1835 (emit-byte segment (dpb opcode (byte 1 3)
1836 (if (eq amt :cl) #b10100101 #b10100100)))
1837 (emit-ea segment dst (reg-tn-encoding src))
1838 (unless (eq amt :cl)
1839 (emit-byte segment amt))))
1841 (eval-when (:compile-toplevel :execute)
1842 (defun double-shift-inst-printer-list (op)
1844 (ext-reg-reg/mem-imm ((op ,(logior op #b100))
1845 (imm nil :type signed-imm-byte)))
1846 (ext-reg-reg/mem ((op ,(logior op #b101)))
1847 (:name :tab reg/mem ", " 'cl)))))
1849 (define-instruction shld (segment dst src amt)
1850 (:declare (type (or (member :cl) (mod 32)) amt))
1851 (:printer-list (double-shift-inst-printer-list #b10100000))
1853 (emit-double-shift segment #b0 dst src amt)))
1855 (define-instruction shrd (segment dst src amt)
1856 (:declare (type (or (member :cl) (mod 32)) amt))
1857 (:printer-list (double-shift-inst-printer-list #b10101000))
1859 (emit-double-shift segment #b1 dst src amt)))
1861 (define-instruction and (segment dst src)
1863 (arith-inst-printer-list #b100))
1865 (emit-random-arith-inst "AND" segment dst src #b100)))
1867 (define-instruction test (segment this that)
1868 (:printer accum-imm ((op #b1010100)))
1869 (:printer rex-accum-imm ((op #b1010100)))
1870 (:printer reg/mem-imm ((op '(#b1111011 #b000))))
1871 (:printer rex-reg/mem-imm ((op '(#b11110111 #b000))))
1872 (:printer reg-reg/mem ((op #b1000010)))
1873 (:printer rex-reg-reg/mem ((op #b10000101)))
1875 (let ((size (matching-operand-size this that)))
1876 (maybe-emit-operand-size-prefix segment size)
1877 (flet ((test-immed-and-something (immed something)
1878 (cond ((accumulator-p something)
1879 (maybe-emit-rex-for-ea segment something nil)
1881 (if (eq size :byte) #b10101000 #b10101001))
1882 (emit-sized-immediate segment size immed))
1884 (maybe-emit-rex-for-ea segment something nil)
1886 (if (eq size :byte) #b11110110 #b11110111))
1887 (emit-ea segment something #b000)
1888 (emit-sized-immediate segment size immed))))
1889 (test-reg-and-something (reg something)
1890 (maybe-emit-rex-for-ea segment something reg)
1891 (emit-byte segment (if (eq size :byte) #b10000100 #b10000101))
1892 (emit-ea segment something (reg-tn-encoding reg))))
1893 (cond ((integerp that)
1894 (test-immed-and-something that this))
1896 (test-immed-and-something this that))
1898 (test-reg-and-something this that))
1900 (test-reg-and-something that this))
1902 (error "bogus operands for TEST: ~S and ~S" this that)))))))
1904 (define-instruction or (segment dst src)
1906 (arith-inst-printer-list #b001))
1908 (emit-random-arith-inst "OR" segment dst src #b001)))
1910 (define-instruction xor (segment dst src)
1912 (arith-inst-printer-list #b110))
1914 (emit-random-arith-inst "XOR" segment dst src #b110)))
1916 (define-instruction not (segment dst)
1917 (:printer reg/mem ((op '(#b1111011 #b010))))
1919 (let ((size (operand-size dst)))
1920 (maybe-emit-operand-size-prefix segment size)
1921 (maybe-emit-rex-for-ea segment dst nil)
1922 (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
1923 (emit-ea segment dst #b010))))
1925 ;;;; string manipulation
1927 (define-instruction cmps (segment size)
1928 (:printer string-op ((op #b1010011)))
1929 (:printer rex-string-op ((op #b1010011)))
1931 (maybe-emit-operand-size-prefix segment size)
1932 (maybe-emit-rex-prefix segment size nil nil nil)
1933 (emit-byte segment (if (eq size :byte) #b10100110 #b10100111))))
1935 (define-instruction ins (segment acc)
1936 (:printer string-op ((op #b0110110)))
1937 (:printer rex-string-op ((op #b0110110)))
1939 (let ((size (operand-size acc)))
1940 (aver (accumulator-p acc))
1941 (maybe-emit-operand-size-prefix segment size)
1942 (maybe-emit-rex-prefix segment size nil nil nil)
1943 (emit-byte segment (if (eq size :byte) #b01101100 #b01101101)))))
1945 (define-instruction lods (segment acc)
1946 (:printer string-op ((op #b1010110)))
1947 (:printer rex-string-op ((op #b1010110)))
1949 (let ((size (operand-size acc)))
1950 (aver (accumulator-p acc))
1951 (maybe-emit-operand-size-prefix segment size)
1952 (maybe-emit-rex-prefix segment size nil nil nil)
1953 (emit-byte segment (if (eq size :byte) #b10101100 #b10101101)))))
1955 (define-instruction movs (segment size)
1956 (:printer string-op ((op #b1010010)))
1957 (:printer rex-string-op ((op #b1010010)))
1959 (maybe-emit-operand-size-prefix segment size)
1960 (maybe-emit-rex-prefix segment size nil nil nil)
1961 (emit-byte segment (if (eq size :byte) #b10100100 #b10100101))))
1963 (define-instruction outs (segment acc)
1964 (:printer string-op ((op #b0110111)))
1965 (:printer rex-string-op ((op #b0110111)))
1967 (let ((size (operand-size acc)))
1968 (aver (accumulator-p acc))
1969 (maybe-emit-operand-size-prefix segment size)
1970 (maybe-emit-rex-prefix segment size nil nil nil)
1971 (emit-byte segment (if (eq size :byte) #b01101110 #b01101111)))))
1973 (define-instruction scas (segment acc)
1974 (:printer string-op ((op #b1010111)))
1975 (:printer rex-string-op ((op #b1010111)))
1977 (let ((size (operand-size acc)))
1978 (aver (accumulator-p acc))
1979 (maybe-emit-operand-size-prefix segment size)
1980 (maybe-emit-rex-prefix segment size nil nil nil)
1981 (emit-byte segment (if (eq size :byte) #b10101110 #b10101111)))))
1983 (define-instruction stos (segment acc)
1984 (:printer string-op ((op #b1010101)))
1985 (:printer rex-string-op ((op #b1010101)))
1987 (let ((size (operand-size acc)))
1988 (aver (accumulator-p acc))
1989 (maybe-emit-operand-size-prefix segment size)
1990 (maybe-emit-rex-prefix segment size nil nil nil)
1991 (emit-byte segment (if (eq size :byte) #b10101010 #b10101011)))))
1993 (define-instruction xlat (segment)
1994 (:printer byte ((op #b11010111)))
1996 (emit-byte segment #b11010111)))
1998 (define-instruction rep (segment)
2000 (emit-byte segment #b11110010)))
2002 (define-instruction repe (segment)
2003 (:printer byte ((op #b11110011)))
2005 (emit-byte segment #b11110011)))
2007 (define-instruction repne (segment)
2008 (:printer byte ((op #b11110010)))
2010 (emit-byte segment #b11110010)))
2013 ;;;; bit manipulation
2015 (define-instruction bsf (segment dst src)
2016 (:printer ext-reg-reg/mem ((op #b1011110) (width 0)))
2018 (let ((size (matching-operand-size dst src)))
2019 (when (eq size :byte)
2020 (error "can't scan bytes: ~S" src))
2021 (maybe-emit-operand-size-prefix segment size)
2022 (maybe-emit-rex-for-ea segment src dst)
2023 (emit-byte segment #b00001111)
2024 (emit-byte segment #b10111100)
2025 (emit-ea segment src (reg-tn-encoding dst)))))
2027 (define-instruction bsr (segment dst src)
2028 (:printer ext-reg-reg/mem ((op #b1011110) (width 1)))
2030 (let ((size (matching-operand-size dst src)))
2031 (when (eq size :byte)
2032 (error "can't scan bytes: ~S" src))
2033 (maybe-emit-operand-size-prefix segment size)
2034 (maybe-emit-rex-for-ea segment src dst)
2035 (emit-byte segment #b00001111)
2036 (emit-byte segment #b10111101)
2037 (emit-ea segment src (reg-tn-encoding dst)))))
2039 (defun emit-bit-test-and-mumble (segment src index opcode)
2040 (let ((size (operand-size src)))
2041 (when (eq size :byte)
2042 (error "can't scan bytes: ~S" src))
2043 (maybe-emit-operand-size-prefix segment size)
2044 (cond ((integerp index)
2045 (maybe-emit-rex-for-ea segment src nil)
2046 (emit-byte segment #b00001111)
2047 (emit-byte segment #b10111010)
2048 (emit-ea segment src opcode)
2049 (emit-byte segment index))
2051 (maybe-emit-rex-for-ea segment src index)
2052 (emit-byte segment #b00001111)
2053 (emit-byte segment (dpb opcode (byte 3 3) #b10000011))
2054 (emit-ea segment src (reg-tn-encoding index))))))
2056 (eval-when (:compile-toplevel :execute)
2057 (defun bit-test-inst-printer-list (subop)
2058 `((ext-reg/mem-imm ((op (#b1011101 ,subop))
2059 (reg/mem nil :type word-reg/mem)
2060 (imm nil :type imm-data)
2062 (ext-reg-reg/mem ((op ,(dpb subop (byte 3 2) #b1000001))
2064 (:name :tab reg/mem ", " reg)))))
2066 (define-instruction bt (segment src index)
2067 (:printer-list (bit-test-inst-printer-list #b100))
2069 (emit-bit-test-and-mumble segment src index #b100)))
2071 (define-instruction btc (segment src index)
2072 (:printer-list (bit-test-inst-printer-list #b111))
2074 (emit-bit-test-and-mumble segment src index #b111)))
2076 (define-instruction btr (segment src index)
2077 (:printer-list (bit-test-inst-printer-list #b110))
2079 (emit-bit-test-and-mumble segment src index #b110)))
2081 (define-instruction bts (segment src index)
2082 (:printer-list (bit-test-inst-printer-list #b101))
2084 (emit-bit-test-and-mumble segment src index #b101)))
2087 ;;;; control transfer
2089 (define-instruction call (segment where)
2090 (:printer near-jump ((op #b11101000)))
2091 (:printer rex-reg/mem ((op '(#b11111111 #b010))))
2092 (:printer reg/mem ((op '(#b1111111 #b010)) (width 1)))
2096 (maybe-emit-rex-for-ea segment where nil)
2097 (emit-byte segment #b11101000) ; 32 bit relative
2098 (emit-back-patch segment
2100 (lambda (segment posn)
2102 (- (label-position where)
2105 (maybe-emit-rex-for-ea segment where nil)
2106 (emit-byte segment #b11101000)
2107 (emit-relative-fixup segment where))
2109 (maybe-emit-rex-for-ea segment where nil)
2110 (emit-byte segment #b11111111)
2111 (emit-ea segment where #b010)))))
2113 (defun emit-byte-displacement-backpatch (segment target)
2114 (emit-back-patch segment
2116 (lambda (segment posn)
2117 (let ((disp (- (label-position target) (1+ posn))))
2118 (aver (<= -128 disp 127))
2119 (emit-byte segment disp)))))
2121 (define-instruction jmp (segment cond &optional where)
2122 ;; conditional jumps
2123 (:printer short-cond-jump ((op #b0111)) '('j cc :tab label))
2124 (:printer near-cond-jump () '('j cc :tab label))
2125 ;; unconditional jumps
2126 (:printer short-jump ((op #b1011)))
2127 (:printer near-jump ((op #b11101001)) )
2128 (:printer reg/mem ((op '(#b1111111 #b100)) (width 1)))
2133 (lambda (segment posn delta-if-after)
2134 (let ((disp (- (label-position where posn delta-if-after)
2136 (when (<= -128 disp 127)
2138 (dpb (conditional-opcode cond)
2141 (emit-byte-displacement-backpatch segment where)
2143 (lambda (segment posn)
2144 (let ((disp (- (label-position where) (+ posn 6))))
2145 (emit-byte segment #b00001111)
2147 (dpb (conditional-opcode cond)
2150 (emit-dword segment disp)))))
2151 ((label-p (setq where cond))
2154 (lambda (segment posn delta-if-after)
2155 (let ((disp (- (label-position where posn delta-if-after)
2157 (when (<= -128 disp 127)
2158 (emit-byte segment #b11101011)
2159 (emit-byte-displacement-backpatch segment where)
2161 (lambda (segment posn)
2162 (let ((disp (- (label-position where) (+ posn 5))))
2163 (emit-byte segment #b11101001)
2164 (emit-dword segment disp)))))
2166 (emit-byte segment #b11101001)
2167 (emit-relative-fixup segment where))
2169 (unless (or (ea-p where) (tn-p where))
2170 (error "don't know what to do with ~A" where))
2171 ;; near jump defaults to 64 bit
2172 ;; w-bit in rex prefix is unnecessary
2173 (maybe-emit-rex-for-ea segment where nil :operand-size :dword)
2174 (emit-byte segment #b11111111)
2175 (emit-ea segment where #b100)))))
2177 (define-instruction jmp-short (segment label)
2179 (emit-byte segment #b11101011)
2180 (emit-byte-displacement-backpatch segment label)))
2182 (define-instruction ret (segment &optional stack-delta)
2183 (:printer byte ((op #b11000011)))
2184 (:printer byte ((op #b11000010) (imm nil :type 'imm-word-16))
2188 (emit-byte segment #b11000010)
2189 (emit-word segment stack-delta))
2191 (emit-byte segment #b11000011)))))
2193 (define-instruction jecxz (segment target)
2194 (:printer short-jump ((op #b0011)))
2196 (emit-byte segment #b11100011)
2197 (emit-byte-displacement-backpatch segment target)))
2199 (define-instruction loop (segment target)
2200 (:printer short-jump ((op #b0010)))
2202 (emit-byte segment #b11100010) ; pfw this was 11100011, or jecxz!!!!
2203 (emit-byte-displacement-backpatch segment target)))
2205 (define-instruction loopz (segment target)
2206 (:printer short-jump ((op #b0001)))
2208 (emit-byte segment #b11100001)
2209 (emit-byte-displacement-backpatch segment target)))
2211 (define-instruction loopnz (segment target)
2212 (:printer short-jump ((op #b0000)))
2214 (emit-byte segment #b11100000)
2215 (emit-byte-displacement-backpatch segment target)))
2217 ;;;; conditional move
2218 (define-instruction cmov (segment cond dst src)
2219 (:printer cond-move ())
2221 (aver (register-p dst))
2222 (let ((size (matching-operand-size dst src)))
2223 (aver (or (eq size :word) (eq size :dword) (eq size :qword) ))
2224 (maybe-emit-operand-size-prefix segment size))
2225 (maybe-emit-rex-for-ea segment src dst)
2226 (emit-byte segment #b00001111)
2227 (emit-byte segment (dpb (conditional-opcode cond) (byte 4 0) #b01000000))
2228 (emit-ea segment src (reg-tn-encoding dst))))
2230 ;;;; conditional byte set
2232 (define-instruction set (segment dst cond)
2233 (:printer cond-set ())
2235 (maybe-emit-rex-for-ea segment dst nil)
2236 (emit-byte segment #b00001111)
2237 (emit-byte segment (dpb (conditional-opcode cond) (byte 4 0) #b10010000))
2238 (emit-ea segment dst #b000)))
2242 (define-instruction enter (segment disp &optional (level 0))
2243 (:declare (type (unsigned-byte 16) disp)
2244 (type (unsigned-byte 8) level))
2245 (:printer enter-format ((op #b11001000)))
2247 (emit-byte segment #b11001000)
2248 (emit-word segment disp)
2249 (emit-byte segment level)))
2251 (define-instruction leave (segment)
2252 (:printer byte ((op #b11001001)))
2254 (emit-byte segment #b11001001)))
2256 ;;;; interrupt instructions
2258 (defun snarf-error-junk (sap offset &optional length-only)
2259 (let* ((length (sb!sys:sap-ref-8 sap offset))
2260 (vector (make-array length :element-type '(unsigned-byte 8))))
2261 (declare (type sb!sys:system-area-pointer sap)
2262 (type (unsigned-byte 8) length)
2263 (type (simple-array (unsigned-byte 8) (*)) vector))
2265 (values 0 (1+ length) nil nil))
2267 (sb!kernel:copy-from-system-area sap (* n-byte-bits (1+ offset))
2268 vector (* n-word-bits
2270 (* length n-byte-bits))
2271 (collect ((sc-offsets)
2273 (lengths 1) ; the length byte
2275 (error-number (sb!c:read-var-integer vector index)))
2278 (when (>= index length)
2280 (let ((old-index index))
2281 (sc-offsets (sb!c:read-var-integer vector index))
2282 (lengths (- index old-index))))
2283 (values error-number
2289 (defmacro break-cases (breaknum &body cases)
2290 (let ((bn-temp (gensym)))
2291 (collect ((clauses))
2292 (dolist (case cases)
2293 (clauses `((= ,bn-temp ,(car case)) ,@(cdr case))))
2294 `(let ((,bn-temp ,breaknum))
2295 (cond ,@(clauses))))))
2298 (defun break-control (chunk inst stream dstate)
2299 (declare (ignore inst))
2300 (flet ((nt (x) (if stream (sb!disassem:note x dstate))))
2301 ;; FIXME: Make sure that BYTE-IMM-CODE is defined. The genesis
2302 ;; map has it undefined; and it should be easier to look in the target
2303 ;; Lisp (with (DESCRIBE 'BYTE-IMM-CODE)) than to definitively deduce
2304 ;; from first principles whether it's defined in some way that genesis
2306 (case (byte-imm-code chunk dstate)
2309 (sb!disassem:handle-break-args #'snarf-error-junk stream dstate))
2312 (sb!disassem:handle-break-args #'snarf-error-junk stream dstate))
2314 (nt "breakpoint trap"))
2315 (#.pending-interrupt-trap
2316 (nt "pending interrupt trap"))
2319 (#.fun-end-breakpoint-trap
2320 (nt "function end breakpoint trap")))))
2322 (define-instruction break (segment code)
2323 (:declare (type (unsigned-byte 8) code))
2324 (:printer byte-imm ((op #b11001100)) '(:name :tab code)
2325 :control #'break-control)
2327 (emit-byte segment #b11001100)
2328 (emit-byte segment code)))
2330 (define-instruction int (segment number)
2331 (:declare (type (unsigned-byte 8) number))
2332 (:printer byte-imm ((op #b11001101)))
2336 (emit-byte segment #b11001100))
2338 (emit-byte segment #b11001101)
2339 (emit-byte segment number)))))
2341 (define-instruction into (segment)
2342 (:printer byte ((op #b11001110)))
2344 (emit-byte segment #b11001110)))
2346 (define-instruction bound (segment reg bounds)
2348 (let ((size (matching-operand-size reg bounds)))
2349 (when (eq size :byte)
2350 (error "can't bounds-test bytes: ~S" reg))
2351 (maybe-emit-operand-size-prefix segment size)
2352 (maybe-emit-rex-for-ea segment bounds reg)
2353 (emit-byte segment #b01100010)
2354 (emit-ea segment bounds (reg-tn-encoding reg)))))
2356 (define-instruction iret (segment)
2357 (:printer byte ((op #b11001111)))
2359 (emit-byte segment #b11001111)))
2361 ;;;; processor control
2363 (define-instruction hlt (segment)
2364 (:printer byte ((op #b11110100)))
2366 (emit-byte segment #b11110100)))
2368 (define-instruction nop (segment)
2369 (:printer byte ((op #b10010000)))
2371 (emit-byte segment #b10010000)))
2373 (define-instruction wait (segment)
2374 (:printer byte ((op #b10011011)))
2376 (emit-byte segment #b10011011)))
2378 (define-instruction lock (segment)
2379 (:printer byte ((op #b11110000)))
2381 (emit-byte segment #b11110000)))
2383 ;;;; miscellaneous hackery
2385 (define-instruction byte (segment byte)
2387 (emit-byte segment byte)))
2389 (define-instruction word (segment word)
2391 (emit-word segment word)))
2393 (define-instruction dword (segment dword)
2395 (emit-dword segment dword)))
2397 (defun emit-header-data (segment type)
2398 (emit-back-patch segment
2400 (lambda (segment posn)
2404 (component-header-length))
2408 (define-instruction simple-fun-header-word (segment)
2410 (emit-header-data segment simple-fun-header-widetag)))
2412 (define-instruction lra-header-word (segment)
2414 (emit-header-data segment return-pc-header-widetag)))
2416 ;;;; fp instructions
2418 ;;;; Note: We treat the single-precision and double-precision variants
2419 ;;;; as separate instructions.
2421 ;;; Load single to st(0).
2422 (define-instruction fld (segment source)
2423 (:printer floating-point ((op '(#b001 #b000))))
2425 (and (not (fp-reg-tn-p source))
2426 (maybe-emit-rex-for-ea segment source nil))
2427 (emit-byte segment #b11011001)
2428 (emit-fp-op segment source #b000)))
2430 ;;; Load double to st(0).
2431 (define-instruction fldd (segment source)
2432 (:printer floating-point ((op '(#b101 #b000))))
2433 (:printer floating-point-fp ((op '(#b001 #b000))))
2435 (if (fp-reg-tn-p source)
2436 (emit-byte segment #b11011001)
2438 (maybe-emit-rex-for-ea segment source nil)
2439 (emit-byte segment #b11011101)))
2440 (emit-fp-op segment source #b000)))
2442 ;;; Load long to st(0).
2443 (define-instruction fldl (segment source)
2444 (:printer floating-point ((op '(#b011 #b101))))
2446 (and (not (fp-reg-tn-p source))
2447 (maybe-emit-rex-for-ea segment source nil))
2448 (emit-byte segment #b11011011)
2449 (emit-fp-op segment source #b101)))
2451 ;;; Store single from st(0).
2452 (define-instruction fst (segment dest)
2453 (:printer floating-point ((op '(#b001 #b010))))
2455 (cond ((fp-reg-tn-p dest)
2456 (emit-byte segment #b11011101)
2457 (emit-fp-op segment dest #b010))
2459 (maybe-emit-rex-for-ea segment dest nil)
2460 (emit-byte segment #b11011001)
2461 (emit-fp-op segment dest #b010)))))
2463 ;;; Store double from st(0).
2464 (define-instruction fstd (segment dest)
2465 (:printer floating-point ((op '(#b101 #b010))))
2466 (:printer floating-point-fp ((op '(#b101 #b010))))
2468 (cond ((fp-reg-tn-p dest)
2469 (emit-byte segment #b11011101)
2470 (emit-fp-op segment dest #b010))
2472 (maybe-emit-rex-for-ea segment dest nil)
2473 (emit-byte segment #b11011101)
2474 (emit-fp-op segment dest #b010)))))
2476 ;;; Arithmetic ops are all done with at least one operand at top of
2477 ;;; stack. The other operand is is another register or a 32/64 bit
2480 ;;; dtc: I've tried to follow the Intel ASM386 conventions, but note
2481 ;;; that these conflict with the Gdb conventions for binops. To reduce
2482 ;;; the confusion I've added comments showing the mathamatical
2483 ;;; operation and the two syntaxes. By the ASM386 convention the
2484 ;;; instruction syntax is:
2487 ;;; or Fop Destination, Source
2489 ;;; If only one operand is given then it is the source and the
2490 ;;; destination is ST(0). There are reversed forms of the fsub and
2491 ;;; fdiv instructions inducated by an 'R' suffix.
2493 ;;; The mathematical operation for the non-reverse form is always:
2494 ;;; destination = destination op source
2496 ;;; For the reversed form it is:
2497 ;;; destination = source op destination
2499 ;;; The instructions below only accept one operand at present which is
2500 ;;; usually the source. I've hack in extra instructions to implement
2501 ;;; the fops with a ST(i) destination, these have a -sti suffix and
2502 ;;; the operand is the destination with the source being ST(0).
2505 ;;; st(0) = st(0) + memory or st(i).
2506 (define-instruction fadd (segment source)
2507 (:printer floating-point ((op '(#b000 #b000))))
2509 (and (not (fp-reg-tn-p source))
2510 (maybe-emit-rex-for-ea segment source nil))
2511 (emit-byte segment #b11011000)
2512 (emit-fp-op segment source #b000)))
2515 ;;; st(0) = st(0) + memory or st(i).
2516 (define-instruction faddd (segment source)
2517 (:printer floating-point ((op '(#b100 #b000))))
2518 (:printer floating-point-fp ((op '(#b000 #b000))))
2520 (and (not (fp-reg-tn-p source))
2521 (maybe-emit-rex-for-ea segment source nil))
2522 (if (fp-reg-tn-p source)
2523 (emit-byte segment #b11011000)
2524 (emit-byte segment #b11011100))
2525 (emit-fp-op segment source #b000)))
2527 ;;; Add double destination st(i):
2528 ;;; st(i) = st(0) + st(i).
2529 (define-instruction fadd-sti (segment destination)
2530 (:printer floating-point-fp ((op '(#b100 #b000))))
2532 (aver (fp-reg-tn-p destination))
2533 (emit-byte segment #b11011100)
2534 (emit-fp-op segment destination #b000)))
2536 (define-instruction faddp-sti (segment destination)
2537 (:printer floating-point-fp ((op '(#b110 #b000))))
2539 (aver (fp-reg-tn-p destination))
2540 (emit-byte segment #b11011110)
2541 (emit-fp-op segment destination #b000)))
2543 ;;; Subtract single:
2544 ;;; st(0) = st(0) - memory or st(i).
2545 (define-instruction fsub (segment source)
2546 (:printer floating-point ((op '(#b000 #b100))))
2548 (and (not (fp-reg-tn-p source))
2549 (maybe-emit-rex-for-ea segment source nil))
2550 (emit-byte segment #b11011000)
2551 (emit-fp-op segment source #b100)))
2553 ;;; Subtract single, reverse:
2554 ;;; st(0) = memory or st(i) - st(0).
2555 (define-instruction fsubr (segment source)
2556 (:printer floating-point ((op '(#b000 #b101))))
2558 (and (not (fp-reg-tn-p source))
2559 (maybe-emit-rex-for-ea segment source nil))
2560 (emit-byte segment #b11011000)
2561 (emit-fp-op segment source #b101)))
2563 ;;; Subtract double:
2564 ;;; st(0) = st(0) - memory or st(i).
2565 (define-instruction fsubd (segment source)
2566 (:printer floating-point ((op '(#b100 #b100))))
2567 (:printer floating-point-fp ((op '(#b000 #b100))))
2569 (if (fp-reg-tn-p source)
2570 (emit-byte segment #b11011000)
2572 (and (not (fp-reg-tn-p source))
2573 (maybe-emit-rex-for-ea segment source nil))
2574 (emit-byte segment #b11011100)))
2575 (emit-fp-op segment source #b100)))
2577 ;;; Subtract double, reverse:
2578 ;;; st(0) = memory or st(i) - st(0).
2579 (define-instruction fsubrd (segment source)
2580 (:printer floating-point ((op '(#b100 #b101))))
2581 (:printer floating-point-fp ((op '(#b000 #b101))))
2583 (if (fp-reg-tn-p source)
2584 (emit-byte segment #b11011000)
2586 (and (not (fp-reg-tn-p source))
2587 (maybe-emit-rex-for-ea segment source nil))
2588 (emit-byte segment #b11011100)))
2589 (emit-fp-op segment source #b101)))
2591 ;;; Subtract double, destination st(i):
2592 ;;; st(i) = st(i) - st(0).
2594 ;;; ASM386 syntax: FSUB ST(i), ST
2595 ;;; Gdb syntax: fsubr %st,%st(i)
2596 (define-instruction fsub-sti (segment destination)
2597 (:printer floating-point-fp ((op '(#b100 #b101))))
2599 (aver (fp-reg-tn-p destination))
2600 (emit-byte segment #b11011100)
2601 (emit-fp-op segment destination #b101)))
2603 (define-instruction fsubp-sti (segment destination)
2604 (:printer floating-point-fp ((op '(#b110 #b101))))
2606 (aver (fp-reg-tn-p destination))
2607 (emit-byte segment #b11011110)
2608 (emit-fp-op segment destination #b101)))
2610 ;;; Subtract double, reverse, destination st(i):
2611 ;;; st(i) = st(0) - st(i).
2613 ;;; ASM386 syntax: FSUBR ST(i), ST
2614 ;;; Gdb syntax: fsub %st,%st(i)
2615 (define-instruction fsubr-sti (segment destination)
2616 (:printer floating-point-fp ((op '(#b100 #b100))))
2618 (aver (fp-reg-tn-p destination))
2619 (emit-byte segment #b11011100)
2620 (emit-fp-op segment destination #b100)))
2622 (define-instruction fsubrp-sti (segment destination)
2623 (:printer floating-point-fp ((op '(#b110 #b100))))
2625 (aver (fp-reg-tn-p destination))
2626 (emit-byte segment #b11011110)
2627 (emit-fp-op segment destination #b100)))
2629 ;;; Multiply single:
2630 ;;; st(0) = st(0) * memory or st(i).
2631 (define-instruction fmul (segment source)
2632 (:printer floating-point ((op '(#b000 #b001))))
2634 (and (not (fp-reg-tn-p source))
2635 (maybe-emit-rex-for-ea segment source nil))
2636 (emit-byte segment #b11011000)
2637 (emit-fp-op segment source #b001)))
2639 ;;; Multiply double:
2640 ;;; st(0) = st(0) * memory or st(i).
2641 (define-instruction fmuld (segment source)
2642 (:printer floating-point ((op '(#b100 #b001))))
2643 (:printer floating-point-fp ((op '(#b000 #b001))))
2645 (if (fp-reg-tn-p source)
2646 (emit-byte segment #b11011000)
2648 (and (not (fp-reg-tn-p source))
2649 (maybe-emit-rex-for-ea segment source nil))
2650 (emit-byte segment #b11011100)))
2651 (emit-fp-op segment source #b001)))
2653 ;;; Multiply double, destination st(i):
2654 ;;; st(i) = st(i) * st(0).
2655 (define-instruction fmul-sti (segment destination)
2656 (:printer floating-point-fp ((op '(#b100 #b001))))
2658 (aver (fp-reg-tn-p destination))
2659 (emit-byte segment #b11011100)
2660 (emit-fp-op segment destination #b001)))
2663 ;;; st(0) = st(0) / memory or st(i).
2664 (define-instruction fdiv (segment source)
2665 (:printer floating-point ((op '(#b000 #b110))))
2667 (and (not (fp-reg-tn-p source))
2668 (maybe-emit-rex-for-ea segment source nil))
2669 (emit-byte segment #b11011000)
2670 (emit-fp-op segment source #b110)))
2672 ;;; Divide single, reverse:
2673 ;;; st(0) = memory or st(i) / st(0).
2674 (define-instruction fdivr (segment source)
2675 (:printer floating-point ((op '(#b000 #b111))))
2677 (and (not (fp-reg-tn-p source))
2678 (maybe-emit-rex-for-ea segment source nil))
2679 (emit-byte segment #b11011000)
2680 (emit-fp-op segment source #b111)))
2683 ;;; st(0) = st(0) / memory or st(i).
2684 (define-instruction fdivd (segment source)
2685 (:printer floating-point ((op '(#b100 #b110))))
2686 (:printer floating-point-fp ((op '(#b000 #b110))))
2688 (if (fp-reg-tn-p source)
2689 (emit-byte segment #b11011000)
2691 (and (not (fp-reg-tn-p source))
2692 (maybe-emit-rex-for-ea segment source nil))
2693 (emit-byte segment #b11011100)))
2694 (emit-fp-op segment source #b110)))
2696 ;;; Divide double, reverse:
2697 ;;; st(0) = memory or st(i) / st(0).
2698 (define-instruction fdivrd (segment source)
2699 (:printer floating-point ((op '(#b100 #b111))))
2700 (:printer floating-point-fp ((op '(#b000 #b111))))
2702 (if (fp-reg-tn-p source)
2703 (emit-byte segment #b11011000)
2705 (and (not (fp-reg-tn-p source))
2706 (maybe-emit-rex-for-ea segment source nil))
2707 (emit-byte segment #b11011100)))
2708 (emit-fp-op segment source #b111)))
2710 ;;; Divide double, destination st(i):
2711 ;;; st(i) = st(i) / st(0).
2713 ;;; ASM386 syntax: FDIV ST(i), ST
2714 ;;; Gdb syntax: fdivr %st,%st(i)
2715 (define-instruction fdiv-sti (segment destination)
2716 (:printer floating-point-fp ((op '(#b100 #b111))))
2718 (aver (fp-reg-tn-p destination))
2719 (emit-byte segment #b11011100)
2720 (emit-fp-op segment destination #b111)))
2722 ;;; Divide double, reverse, destination st(i):
2723 ;;; st(i) = st(0) / st(i).
2725 ;;; ASM386 syntax: FDIVR ST(i), ST
2726 ;;; Gdb syntax: fdiv %st,%st(i)
2727 (define-instruction fdivr-sti (segment destination)
2728 (:printer floating-point-fp ((op '(#b100 #b110))))
2730 (aver (fp-reg-tn-p destination))
2731 (emit-byte segment #b11011100)
2732 (emit-fp-op segment destination #b110)))
2734 ;;; Exchange fr0 with fr(n). (There is no double precision variant.)
2735 (define-instruction fxch (segment source)
2736 (:printer floating-point-fp ((op '(#b001 #b001))))
2738 (unless (and (tn-p source)
2739 (eq (sb-name (sc-sb (tn-sc source))) 'float-registers))
2741 (emit-byte segment #b11011001)
2742 (emit-fp-op segment source #b001)))
2744 ;;; Push 32-bit integer to st0.
2745 (define-instruction fild (segment source)
2746 (:printer floating-point ((op '(#b011 #b000))))
2748 (and (not (fp-reg-tn-p source))
2749 (maybe-emit-rex-for-ea segment source nil))
2750 (emit-byte segment #b11011011)
2751 (emit-fp-op segment source #b000)))
2753 ;;; Push 64-bit integer to st0.
2754 (define-instruction fildl (segment source)
2755 (:printer floating-point ((op '(#b111 #b101))))
2757 (and (not (fp-reg-tn-p source))
2758 (maybe-emit-rex-for-ea segment source nil))
2759 (emit-byte segment #b11011111)
2760 (emit-fp-op segment source #b101)))
2762 ;;; Store 32-bit integer.
2763 (define-instruction fist (segment dest)
2764 (:printer floating-point ((op '(#b011 #b010))))
2766 (and (not (fp-reg-tn-p dest))
2767 (maybe-emit-rex-for-ea segment dest nil))
2768 (emit-byte segment #b11011011)
2769 (emit-fp-op segment dest #b010)))
2771 ;;; Store and pop 32-bit integer.
2772 (define-instruction fistp (segment dest)
2773 (:printer floating-point ((op '(#b011 #b011))))
2775 (and (not (fp-reg-tn-p dest))
2776 (maybe-emit-rex-for-ea segment dest nil))
2777 (emit-byte segment #b11011011)
2778 (emit-fp-op segment dest #b011)))
2780 ;;; Store and pop 64-bit integer.
2781 (define-instruction fistpl (segment dest)
2782 (:printer floating-point ((op '(#b111 #b111))))
2784 (and (not (fp-reg-tn-p dest))
2785 (maybe-emit-rex-for-ea segment dest nil))
2786 (emit-byte segment #b11011111)
2787 (emit-fp-op segment dest #b111)))
2789 ;;; Store single from st(0) and pop.
2790 (define-instruction fstp (segment dest)
2791 (:printer floating-point ((op '(#b001 #b011))))
2793 (cond ((fp-reg-tn-p dest)
2794 (emit-byte segment #b11011101)
2795 (emit-fp-op segment dest #b011))
2797 (maybe-emit-rex-for-ea segment dest nil)
2798 (emit-byte segment #b11011001)
2799 (emit-fp-op segment dest #b011)))))
2801 ;;; Store double from st(0) and pop.
2802 (define-instruction fstpd (segment dest)
2803 (:printer floating-point ((op '(#b101 #b011))))
2804 (:printer floating-point-fp ((op '(#b101 #b011))))
2806 (cond ((fp-reg-tn-p dest)
2807 (emit-byte segment #b11011101)
2808 (emit-fp-op segment dest #b011))
2810 (maybe-emit-rex-for-ea segment dest nil)
2811 (emit-byte segment #b11011101)
2812 (emit-fp-op segment dest #b011)))))
2814 ;;; Store long from st(0) and pop.
2815 (define-instruction fstpl (segment dest)
2816 (:printer floating-point ((op '(#b011 #b111))))
2818 (and (not (fp-reg-tn-p dest))
2819 (maybe-emit-rex-for-ea segment dest nil))
2820 (emit-byte segment #b11011011)
2821 (emit-fp-op segment dest #b111)))
2823 ;;; Decrement stack-top pointer.
2824 (define-instruction fdecstp (segment)
2825 (:printer floating-point-no ((op #b10110)))
2827 (emit-byte segment #b11011001)
2828 (emit-byte segment #b11110110)))
2830 ;;; Increment stack-top pointer.
2831 (define-instruction fincstp (segment)
2832 (:printer floating-point-no ((op #b10111)))
2834 (emit-byte segment #b11011001)
2835 (emit-byte segment #b11110111)))
2837 ;;; Free fp register.
2838 (define-instruction ffree (segment dest)
2839 (:printer floating-point-fp ((op '(#b101 #b000))))
2841 (and (not (fp-reg-tn-p dest))
2842 (maybe-emit-rex-for-ea segment dest nil))
2843 (emit-byte segment #b11011101)
2844 (emit-fp-op segment dest #b000)))
2846 (define-instruction fabs (segment)
2847 (:printer floating-point-no ((op #b00001)))
2849 (emit-byte segment #b11011001)
2850 (emit-byte segment #b11100001)))
2852 (define-instruction fchs (segment)
2853 (:printer floating-point-no ((op #b00000)))
2855 (emit-byte segment #b11011001)
2856 (emit-byte segment #b11100000)))
2858 (define-instruction frndint(segment)
2859 (:printer floating-point-no ((op #b11100)))
2861 (emit-byte segment #b11011001)
2862 (emit-byte segment #b11111100)))
2865 (define-instruction fninit(segment)
2866 (:printer floating-point-5 ((op #b00011)))
2868 (emit-byte segment #b11011011)
2869 (emit-byte segment #b11100011)))
2871 ;;; Store Status Word to AX.
2872 (define-instruction fnstsw(segment)
2873 (:printer floating-point-st ((op #b00000)))
2875 (emit-byte segment #b11011111)
2876 (emit-byte segment #b11100000)))
2878 ;;; Load Control Word.
2880 ;;; src must be a memory location
2881 (define-instruction fldcw(segment src)
2882 (:printer floating-point ((op '(#b001 #b101))))
2884 (and (not (fp-reg-tn-p src))
2885 (maybe-emit-rex-for-ea segment src nil))
2886 (emit-byte segment #b11011001)
2887 (emit-fp-op segment src #b101)))
2889 ;;; Store Control Word.
2890 (define-instruction fnstcw(segment dst)
2891 (:printer floating-point ((op '(#b001 #b111))))
2893 (and (not (fp-reg-tn-p dst))
2894 (maybe-emit-rex-for-ea segment dst nil))
2895 (emit-byte segment #b11011001)
2896 (emit-fp-op segment dst #b111)))
2898 ;;; Store FP Environment.
2899 (define-instruction fstenv(segment dst)
2900 (:printer floating-point ((op '(#b001 #b110))))
2902 (and (not (fp-reg-tn-p dst))
2903 (maybe-emit-rex-for-ea segment dst nil))
2904 (emit-byte segment #b11011001)
2905 (emit-fp-op segment dst #b110)))
2907 ;;; Restore FP Environment.
2908 (define-instruction fldenv(segment src)
2909 (:printer floating-point ((op '(#b001 #b100))))
2911 (and (not (fp-reg-tn-p src))
2912 (maybe-emit-rex-for-ea segment src nil))
2913 (emit-byte segment #b11011001)
2914 (emit-fp-op segment src #b100)))
2917 (define-instruction fsave(segment dst)
2918 (:printer floating-point ((op '(#b101 #b110))))
2920 (and (not (fp-reg-tn-p dst))
2921 (maybe-emit-rex-for-ea segment dst nil))
2922 (emit-byte segment #b11011101)
2923 (emit-fp-op segment dst #b110)))
2925 ;;; Restore FP State.
2926 (define-instruction frstor(segment src)
2927 (:printer floating-point ((op '(#b101 #b100))))
2929 (and (not (fp-reg-tn-p src))
2930 (maybe-emit-rex-for-ea segment src nil))
2931 (emit-byte segment #b11011101)
2932 (emit-fp-op segment src #b100)))
2934 ;;; Clear exceptions.
2935 (define-instruction fnclex(segment)
2936 (:printer floating-point-5 ((op #b00010)))
2938 (emit-byte segment #b11011011)
2939 (emit-byte segment #b11100010)))
2942 (define-instruction fcom (segment src)
2943 (:printer floating-point ((op '(#b000 #b010))))
2945 (and (not (fp-reg-tn-p src))
2946 (maybe-emit-rex-for-ea segment src nil))
2947 (emit-byte segment #b11011000)
2948 (emit-fp-op segment src #b010)))
2950 (define-instruction fcomd (segment src)
2951 (:printer floating-point ((op '(#b100 #b010))))
2952 (:printer floating-point-fp ((op '(#b000 #b010))))
2954 (if (fp-reg-tn-p src)
2955 (emit-byte segment #b11011000)
2957 (maybe-emit-rex-for-ea segment src nil)
2958 (emit-byte segment #b11011100)))
2959 (emit-fp-op segment src #b010)))
2961 ;;; Compare ST1 to ST0, popping the stack twice.
2962 (define-instruction fcompp (segment)
2963 (:printer floating-point-3 ((op '(#b110 #b011001))))
2965 (emit-byte segment #b11011110)
2966 (emit-byte segment #b11011001)))
2968 ;;; unordered comparison
2969 (define-instruction fucom (segment src)
2970 (:printer floating-point-fp ((op '(#b101 #b100))))
2972 (aver (fp-reg-tn-p src))
2973 (emit-byte segment #b11011101)
2974 (emit-fp-op segment src #b100)))
2976 (define-instruction ftst (segment)
2977 (:printer floating-point-no ((op #b00100)))
2979 (emit-byte segment #b11011001)
2980 (emit-byte segment #b11100100)))
2984 (define-instruction fsqrt(segment)
2985 (:printer floating-point-no ((op #b11010)))
2987 (emit-byte segment #b11011001)
2988 (emit-byte segment #b11111010)))
2990 (define-instruction fscale(segment)
2991 (:printer floating-point-no ((op #b11101)))
2993 (emit-byte segment #b11011001)
2994 (emit-byte segment #b11111101)))
2996 (define-instruction fxtract(segment)
2997 (:printer floating-point-no ((op #b10100)))
2999 (emit-byte segment #b11011001)
3000 (emit-byte segment #b11110100)))
3002 (define-instruction fsin(segment)
3003 (:printer floating-point-no ((op #b11110)))
3005 (emit-byte segment #b11011001)
3006 (emit-byte segment #b11111110)))
3008 (define-instruction fcos(segment)
3009 (:printer floating-point-no ((op #b11111)))
3011 (emit-byte segment #b11011001)
3012 (emit-byte segment #b11111111)))
3014 (define-instruction fprem1(segment)
3015 (:printer floating-point-no ((op #b10101)))
3017 (emit-byte segment #b11011001)
3018 (emit-byte segment #b11110101)))
3020 (define-instruction fprem(segment)
3021 (:printer floating-point-no ((op #b11000)))
3023 (emit-byte segment #b11011001)
3024 (emit-byte segment #b11111000)))
3026 (define-instruction fxam (segment)
3027 (:printer floating-point-no ((op #b00101)))
3029 (emit-byte segment #b11011001)
3030 (emit-byte segment #b11100101)))
3032 ;;; These do push/pop to stack and need special handling
3033 ;;; in any VOPs that use them. See the book.
3035 ;;; st0 <- st1*log2(st0)
3036 (define-instruction fyl2x(segment) ; pops stack
3037 (:printer floating-point-no ((op #b10001)))
3039 (emit-byte segment #b11011001)
3040 (emit-byte segment #b11110001)))
3042 (define-instruction fyl2xp1(segment)
3043 (:printer floating-point-no ((op #b11001)))
3045 (emit-byte segment #b11011001)
3046 (emit-byte segment #b11111001)))
3048 (define-instruction f2xm1(segment)
3049 (:printer floating-point-no ((op #b10000)))
3051 (emit-byte segment #b11011001)
3052 (emit-byte segment #b11110000)))
3054 (define-instruction fptan(segment) ; st(0) <- 1; st(1) <- tan
3055 (:printer floating-point-no ((op #b10010)))
3057 (emit-byte segment #b11011001)
3058 (emit-byte segment #b11110010)))
3060 (define-instruction fpatan(segment) ; POPS STACK
3061 (:printer floating-point-no ((op #b10011)))
3063 (emit-byte segment #b11011001)
3064 (emit-byte segment #b11110011)))
3066 ;;;; loading constants
3068 (define-instruction fldz(segment)
3069 (:printer floating-point-no ((op #b01110)))
3071 (emit-byte segment #b11011001)
3072 (emit-byte segment #b11101110)))
3074 (define-instruction fld1(segment)
3075 (:printer floating-point-no ((op #b01000)))
3077 (emit-byte segment #b11011001)
3078 (emit-byte segment #b11101000)))
3080 (define-instruction fldpi(segment)
3081 (:printer floating-point-no ((op #b01011)))
3083 (emit-byte segment #b11011001)
3084 (emit-byte segment #b11101011)))
3086 (define-instruction fldl2t(segment)
3087 (:printer floating-point-no ((op #b01001)))
3089 (emit-byte segment #b11011001)
3090 (emit-byte segment #b11101001)))
3092 (define-instruction fldl2e(segment)
3093 (:printer floating-point-no ((op #b01010)))
3095 (emit-byte segment #b11011001)
3096 (emit-byte segment #b11101010)))
3098 (define-instruction fldlg2(segment)
3099 (:printer floating-point-no ((op #b01100)))
3101 (emit-byte segment #b11011001)
3102 (emit-byte segment #b11101100)))
3104 (define-instruction fldln2(segment)
3105 (:printer floating-point-no ((op #b01101)))
3107 (emit-byte segment #b11011001)
3108 (emit-byte segment #b11101101)))
3110 ;; new xmm insns required by sse float
3111 ;; movsd andpd comisd comiss
3113 (define-instruction movsd (segment dst src)
3114 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3116 (cond ((typep src 'tn)
3117 (emit-byte segment #xf2)
3118 (maybe-emit-rex-for-ea segment dst src)
3119 (emit-byte segment #x0f)
3120 (emit-byte segment #x11)
3121 (emit-ea segment dst (reg-tn-encoding src)))
3123 (emit-byte segment #xf2)
3124 (maybe-emit-rex-for-ea segment src dst)
3125 (emit-byte segment #x0f)
3126 (emit-byte segment #x10)
3127 (emit-ea segment src (reg-tn-encoding dst))))))
3129 (define-instruction movss (segment dst src)
3130 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3133 (emit-byte segment #xf3)
3134 (maybe-emit-rex-for-ea segment dst src)
3135 (emit-byte segment #x0f)
3136 (emit-byte segment #x11)
3137 (emit-ea segment dst (reg-tn-encoding src)))
3139 (emit-byte segment #xf3)
3140 (maybe-emit-rex-for-ea segment src dst)
3141 (emit-byte segment #x0f)
3142 (emit-byte segment #x10)
3143 (emit-ea segment src (reg-tn-encoding dst))))))
3145 (define-instruction andpd (segment dst src)
3146 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3148 (emit-byte segment #x66)
3149 (maybe-emit-rex-for-ea segment src dst)
3150 (emit-byte segment #x0f)
3151 (emit-byte segment #x54)
3152 (emit-ea segment src (reg-tn-encoding dst))))
3154 (define-instruction andps (segment dst src)
3156 (maybe-emit-rex-for-ea segment src dst)
3157 (emit-byte segment #x0f)
3158 (emit-byte segment #x54)
3159 (emit-ea segment src (reg-tn-encoding dst))))
3161 (define-instruction comisd (segment dst src)
3162 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3164 (emit-byte segment #x66)
3165 (maybe-emit-rex-for-ea segment src dst)
3166 (emit-byte segment #x0f)
3167 (emit-byte segment #x2f)
3168 (emit-ea segment src (reg-tn-encoding dst))))
3170 (define-instruction comiss (segment dst src)
3171 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3173 (maybe-emit-rex-for-ea segment src dst)
3174 (emit-byte segment #x0f)
3175 (emit-byte segment #x2f)
3176 (emit-ea segment src (reg-tn-encoding dst))))
3178 ;; movd movq xorp xord
3180 ;; we only do the xmm version of movd
3181 (define-instruction movd (segment dst src)
3182 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3184 (cond ((fp-reg-tn-p dst)
3185 (emit-byte segment #x66)
3186 (maybe-emit-rex-for-ea segment src dst)
3187 (emit-byte segment #x0f)
3188 (emit-byte segment #x6e)
3189 (emit-ea segment src (reg-tn-encoding dst)))
3191 (aver (fp-reg-tn-p src))
3192 (emit-byte segment #x66)
3193 (maybe-emit-rex-for-ea segment dst src)
3194 (emit-byte segment #x0f)
3195 (emit-byte segment #x7e)
3196 (emit-ea segment dst (reg-tn-encoding src))))))
3198 (define-instruction movq (segment dst src)
3199 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3201 (cond ((fp-reg-tn-p dst)
3202 (emit-byte segment #xf3)
3203 (maybe-emit-rex-for-ea segment src dst)
3204 (emit-byte segment #x0f)
3205 (emit-byte segment #x7e)
3206 (emit-ea segment src (reg-tn-encoding dst)))
3208 (aver (fp-reg-tn-p src))
3209 (emit-byte segment #x66)
3210 (maybe-emit-rex-for-ea segment dst src)
3211 (emit-byte segment #x0f)
3212 (emit-byte segment #xd6)
3213 (emit-ea segment dst (reg-tn-encoding src))))))
3215 (define-instruction xorpd (segment dst src)
3216 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3218 (emit-byte segment #x66)
3219 (maybe-emit-rex-for-ea segment src dst)
3220 (emit-byte segment #x0f)
3221 (emit-byte segment #x57)
3222 (emit-ea segment src (reg-tn-encoding dst))))
3224 (define-instruction xorps (segment dst src)
3225 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3227 (maybe-emit-rex-for-ea segment src dst)
3228 (emit-byte segment #x0f)
3229 (emit-byte segment #x57)
3230 (emit-ea segment src (reg-tn-encoding dst))))
3232 (define-instruction cvtsd2si (segment dst src)
3233 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3235 (emit-byte segment #xf2)
3236 (maybe-emit-rex-for-ea segment src dst :operand-size :qword)
3237 (emit-byte segment #x0f)
3238 (emit-byte segment #x2d)
3239 (emit-ea segment src (reg-tn-encoding dst))))
3241 (define-instruction cvtsd2ss (segment dst src)
3242 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3244 (emit-byte segment #xf2)
3245 (maybe-emit-rex-for-ea segment src dst)
3246 (emit-byte segment #x0f)
3247 (emit-byte segment #x5a)
3248 (emit-ea segment src (reg-tn-encoding dst))))
3250 (define-instruction cvtss2si (segment dst src)
3251 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3253 (emit-byte segment #xf3)
3254 (maybe-emit-rex-for-ea segment src dst :operand-size :qword)
3255 (emit-byte segment #x0f)
3256 (emit-byte segment #x2d)
3257 (emit-ea segment src (reg-tn-encoding dst))))
3259 (define-instruction cvtss2sd (segment dst src)
3260 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3262 (emit-byte segment #xf3)
3263 (maybe-emit-rex-for-ea segment src dst)
3264 (emit-byte segment #x0f)
3265 (emit-byte segment #x5a)
3266 (emit-ea segment src (reg-tn-encoding dst))))
3268 (define-instruction cvtsi2ss (segment dst src)
3269 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3271 (emit-byte segment #xf3)
3272 (maybe-emit-rex-for-ea segment src dst)
3273 (emit-byte segment #x0f)
3274 (emit-byte segment #x2a)
3275 (emit-ea segment src (reg-tn-encoding dst))))
3277 (define-instruction cvtsi2sd (segment dst src)
3278 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3280 (emit-byte segment #xf2)
3281 (maybe-emit-rex-for-ea segment src dst)
3282 (emit-byte segment #x0f)
3283 (emit-byte segment #x2a)
3284 (emit-ea segment src (reg-tn-encoding dst))))
3286 (define-instruction cvtdq2pd (segment dst src)
3287 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3289 (emit-byte segment #xf3)
3290 (maybe-emit-rex-for-ea segment src dst)
3291 (emit-byte segment #x0f)
3292 (emit-byte segment #xe6)
3293 (emit-ea segment src (reg-tn-encoding dst))))
3295 (define-instruction cvtdq2ps (segment dst src)
3296 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3298 (maybe-emit-rex-for-ea segment src dst)
3299 (emit-byte segment #x0f)
3300 (emit-byte segment #x5b)
3301 (emit-ea segment src (reg-tn-encoding dst))))
3303 ;; CVTTSD2SI CVTTSS2SI
3305 (define-instruction cvttsd2si (segment dst src)
3306 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3308 (emit-byte segment #xf2)
3309 (maybe-emit-rex-for-ea segment src dst :operand-size :qword)
3310 (emit-byte segment #x0f)
3311 (emit-byte segment #x2c)
3312 (emit-ea segment src (reg-tn-encoding dst))))
3314 (define-instruction cvttss2si (segment dst src)
3315 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3317 (emit-byte segment #xf3)
3318 (maybe-emit-rex-for-ea segment src dst :operand-size :qword)
3319 (emit-byte segment #x0f)
3320 (emit-byte segment #x2c)
3321 (emit-ea segment src (reg-tn-encoding dst))))
3323 (define-instruction addsd (segment dst src)
3324 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3326 (emit-byte segment #xf2)
3327 (maybe-emit-rex-for-ea segment src dst)
3328 (emit-byte segment #x0f)
3329 (emit-byte segment #x58)
3330 (emit-ea segment src (reg-tn-encoding dst))))
3332 (define-instruction addss (segment dst src)
3333 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3335 (emit-byte segment #xf3)
3336 (maybe-emit-rex-for-ea segment src dst)
3337 (emit-byte segment #x0f)
3338 (emit-byte segment #x58)
3339 (emit-ea segment src (reg-tn-encoding dst))))
3341 (define-instruction divsd (segment dst src)
3342 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3344 (emit-byte segment #xf2)
3345 (maybe-emit-rex-for-ea segment src dst)
3346 (emit-byte segment #x0f)
3347 (emit-byte segment #x5e)
3348 (emit-ea segment src (reg-tn-encoding dst))))
3350 (define-instruction divss (segment dst src)
3351 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3353 (emit-byte segment #xf3)
3354 (maybe-emit-rex-for-ea segment src dst)
3355 (emit-byte segment #x0f)
3356 (emit-byte segment #x5e)
3357 (emit-ea segment src (reg-tn-encoding dst))))
3359 (define-instruction mulsd (segment dst src)
3360 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3362 (emit-byte segment #xf2)
3363 (maybe-emit-rex-for-ea segment src dst)
3364 (emit-byte segment #x0f)
3365 (emit-byte segment #x59)
3366 (emit-ea segment src (reg-tn-encoding dst))))
3368 (define-instruction mulss (segment dst src)
3369 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3371 (emit-byte segment #xf3)
3372 (maybe-emit-rex-for-ea segment src dst)
3373 (emit-byte segment #x0f)
3374 (emit-byte segment #x59)
3375 (emit-ea segment src (reg-tn-encoding dst))))
3377 (define-instruction subsd (segment dst src)
3378 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3380 (emit-byte segment #xf2)
3381 (maybe-emit-rex-for-ea segment src dst)
3382 (emit-byte segment #x0f)
3383 (emit-byte segment #x5c)
3384 (emit-ea segment src (reg-tn-encoding dst))))
3386 (define-instruction subss (segment dst src)
3387 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3389 (emit-byte segment #xf3)
3390 (maybe-emit-rex-for-ea segment src dst)
3391 (emit-byte segment #x0f)
3392 (emit-byte segment #x5c)
3393 (emit-ea segment src (reg-tn-encoding dst))))
3395 (define-instruction ldmxcsr (segment src)
3397 (emit-byte segment #x0f)
3398 (emit-byte segment #xae)
3399 (emit-ea segment src 2)))
3401 (define-instruction stmxcsr (segment dst)
3403 (emit-byte segment #x0f)
3404 (emit-byte segment #xae)
3405 (emit-ea segment dst 3)))