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-R15 are handled separately.
23 (deftype reg () '(unsigned-byte 3))
25 ;;; This includes legacy registers and R8-R15.
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 ;;; The default address size for the chip. It could be overwritten
33 ;;; to :dword with a #x67 prefix, but this is never needed by SBCL
34 ;;; and thus not supported by this assembler/disassembler.
35 (def!constant +default-address-size+ :qword)
37 (eval-when (#-sb-xc :compile-toplevel :load-toplevel :execute)
39 (defun offset-next (value dstate)
40 (declare (type integer value)
41 (type sb!disassem:disassem-state dstate))
42 (+ (sb!disassem:dstate-next-addr dstate) value))
44 (defparameter *byte-reg-names*
45 #(al cl dl bl spl bpl sil dil r8b r9b r10b r11b r12b r13b r14b r15b))
46 (defparameter *word-reg-names*
47 #(ax cx dx bx sp bp si di r8w r9w r10w r11w r12w r13w r14w r15w))
48 (defparameter *dword-reg-names*
49 #(eax ecx edx ebx esp ebp esi edi r8d r9d r10d r11d r12d r13d r14d r15d))
50 (defparameter *qword-reg-names*
51 #(rax rcx rdx rbx rsp rbp rsi rdi r8 r9 r10 r11 r12 r13 r14 r15))
53 ;;; The printers for registers, memory references and immediates need to
54 ;;; take into account the width bit in the instruction, whether a #x66
55 ;;; or a REX prefix was issued, and the contents of the REX prefix.
56 ;;; This is implemented using prefilters to put flags into the slot
57 ;;; INST-PROPERTIES of the DSTATE. These flags are the following
60 ;;; OPERAND-SIZE-8 The width bit was zero
61 ;;; OPERAND-SIZE-16 The "operand size override" prefix (#x66) was found
62 ;;; REX A REX prefix was found
63 ;;; REX-W A REX prefix with the "operand width" bit set was
65 ;;; REX-R A REX prefix with the "register" bit set was found
66 ;;; REX-X A REX prefix with the "index" bit set was found
67 ;;; REX-B A REX prefix with the "base" bit set was found
69 ;;; Return the operand size depending on the prefixes and width bit as
71 (defun inst-operand-size (dstate)
72 (declare (type sb!disassem:disassem-state dstate))
73 (cond ((sb!disassem:dstate-get-inst-prop dstate 'operand-size-8)
75 ((sb!disassem:dstate-get-inst-prop dstate 'rex-w)
77 ((sb!disassem:dstate-get-inst-prop dstate 'operand-size-16)
80 +default-operand-size+)))
82 ;;; The same as INST-OPERAND-SIZE, but for those instructions (e.g.
83 ;;; PUSH, JMP) that have a default operand size of :qword. It can only
84 ;;; be overwritten to :word.
85 (defun inst-operand-size-default-qword (dstate)
86 (declare (type sb!disassem:disassem-state dstate))
87 (if (sb!disassem:dstate-get-inst-prop dstate 'operand-size-16)
91 (defun print-reg-with-width (value width stream dstate)
92 (declare (type full-reg value)
95 (princ (aref (ecase width
96 (:byte *byte-reg-names*)
97 (:word *word-reg-names*)
98 (:dword *dword-reg-names*)
99 (:qword *qword-reg-names*))
102 ;; XXX plus should do some source-var notes
105 (defun print-reg (value stream dstate)
106 (declare (type full-reg value)
108 (type sb!disassem:disassem-state dstate))
109 (print-reg-with-width value
110 (inst-operand-size dstate)
114 (defun print-reg-default-qword (value stream dstate)
115 (declare (type full-reg value)
117 (type sb!disassem:disassem-state dstate))
118 (print-reg-with-width value
119 (inst-operand-size-default-qword dstate)
123 (defun print-byte-reg (value stream dstate)
124 (declare (type full-reg value)
126 (type sb!disassem:disassem-state dstate))
127 (print-reg-with-width value :byte stream dstate))
129 (defun print-addr-reg (value stream dstate)
130 (declare (type full-reg value)
132 (type sb!disassem:disassem-state dstate))
133 (print-reg-with-width value +default-address-size+ stream dstate))
135 ;;; Print a register or a memory reference of the given WIDTH.
136 ;;; If SIZED-P is true, add an explicit size indicator for memory
138 (defun print-reg/mem-with-width (value width sized-p stream dstate)
139 (declare (type (or list full-reg) value)
140 (type (member :byte :word :dword :qword) width)
141 (type boolean sized-p)
143 (type sb!disassem:disassem-state dstate))
144 (if (typep value 'full-reg)
145 (print-reg-with-width value width stream dstate)
146 (print-mem-access value (and sized-p width) stream dstate)))
148 ;;; Print a register or a memory reference. The width is determined by
149 ;;; calling INST-OPERAND-SIZE.
150 (defun print-reg/mem (value stream dstate)
151 (declare (type (or list full-reg) value)
153 (type sb!disassem:disassem-state dstate))
154 (print-reg/mem-with-width
155 value (inst-operand-size dstate) nil stream dstate))
157 ;; Same as print-reg/mem, but prints an explicit size indicator for
158 ;; memory references.
159 (defun print-sized-reg/mem (value stream dstate)
160 (declare (type (or list full-reg) value)
162 (type sb!disassem:disassem-state dstate))
163 (print-reg/mem-with-width
164 value (inst-operand-size dstate) t stream dstate))
166 ;;; Same as print-sized-reg/mem, but with a default operand size of
168 (defun print-sized-reg/mem-default-qword (value stream dstate)
169 (declare (type (or list full-reg) value)
171 (type sb!disassem:disassem-state dstate))
172 (print-reg/mem-with-width
173 value (inst-operand-size-default-qword dstate) t stream dstate))
175 (defun print-sized-byte-reg/mem (value stream dstate)
176 (declare (type (or list full-reg) value)
178 (type sb!disassem:disassem-state dstate))
179 (print-reg/mem-with-width value :byte t stream dstate))
181 (defun print-sized-word-reg/mem (value stream dstate)
182 (declare (type (or list full-reg) value)
184 (type sb!disassem:disassem-state dstate))
185 (print-reg/mem-with-width value :word t stream dstate))
187 (defun print-sized-dword-reg/mem (value stream dstate)
188 (declare (type (or list full-reg) value)
190 (type sb!disassem:disassem-state dstate))
191 (print-reg/mem-with-width value :dword t stream dstate))
193 (defun print-label (value stream dstate)
194 (declare (ignore dstate))
195 (sb!disassem:princ16 value stream))
197 ;;; This prefilter is used solely for its side effects, namely to put
198 ;;; the bits found in the REX prefix into the DSTATE for use by other
199 ;;; prefilters and by printers.
200 (defun prefilter-wrxb (value dstate)
201 (declare (type (unsigned-byte 4) value)
202 (type sb!disassem:disassem-state dstate))
203 (sb!disassem:dstate-put-inst-prop dstate 'rex)
204 (when (plusp (logand value #b1000))
205 (sb!disassem:dstate-put-inst-prop dstate 'rex-w))
206 (when (plusp (logand value #b0100))
207 (sb!disassem:dstate-put-inst-prop dstate 'rex-r))
208 (when (plusp (logand value #b0010))
209 (sb!disassem:dstate-put-inst-prop dstate 'rex-x))
210 (when (plusp (logand value #b0001))
211 (sb!disassem:dstate-put-inst-prop dstate 'rex-b))
214 ;;; This prefilter is used solely for its side effect, namely to put
215 ;;; the property OPERAND-SIZE-8 into the DSTATE if VALUE is 0.
216 (defun prefilter-width (value dstate)
217 (declare (type bit value)
218 (type sb!disassem:disassem-state dstate))
220 (sb!disassem:dstate-put-inst-prop dstate 'operand-size-8))
223 ;;; A register field that can be extended by REX.R.
224 (defun prefilter-reg-r (value dstate)
225 (declare (type reg value)
226 (type sb!disassem:disassem-state dstate))
227 (if (sb!disassem::dstate-get-inst-prop dstate 'rex-r)
231 ;;; A register field that can be extended by REX.B.
232 (defun prefilter-reg-b (value dstate)
233 (declare (type reg value)
234 (type sb!disassem:disassem-state dstate))
235 (if (sb!disassem::dstate-get-inst-prop dstate 'rex-b)
239 ;;; Returns either an integer, meaning a register, or a list of
240 ;;; (BASE-REG OFFSET INDEX-REG INDEX-SCALE), where any component
241 ;;; may be missing or nil to indicate that it's not used or has the
242 ;;; obvious default value (e.g., 1 for the index-scale). VALUE is a list
243 ;;; of the mod and r/m field of the ModRM byte of the instruction.
244 ;;; Depending on VALUE a SIB byte and/or an offset may be read. The
245 ;;; REX.B bit from DSTATE is used to extend the sole register or the
246 ;;; BASE-REG to a full register, the REX.X bit does the same for the
248 (defun prefilter-reg/mem (value dstate)
249 (declare (type list value)
250 (type sb!disassem:disassem-state dstate))
251 (let ((mod (first value))
252 (r/m (second value)))
253 (declare (type (unsigned-byte 2) mod)
254 (type (unsigned-byte 3) r/m))
255 (let ((full-reg (if (sb!disassem:dstate-get-inst-prop dstate 'rex-b)
258 (declare (type full-reg full-reg))
264 (let ((sib (sb!disassem:read-suffix 8 dstate)))
265 (declare (type (unsigned-byte 8) sib))
266 (let ((base-reg (ldb (byte 3 0) sib))
267 (index-reg (ldb (byte 3 3) sib))
268 (index-scale (ldb (byte 2 6) sib)))
269 (declare (type (unsigned-byte 3) base-reg index-reg)
270 (type (unsigned-byte 2) index-scale))
274 (if (= base-reg #b101)
275 (sb!disassem:read-signed-suffix 32 dstate)
278 (sb!disassem:read-signed-suffix 8 dstate))
280 (sb!disassem:read-signed-suffix 32 dstate)))))
281 (list (unless (and (= mod #b00) (= base-reg #b101))
282 (if (sb!disassem:dstate-get-inst-prop dstate 'rex-b)
286 (unless (= index-reg #b100)
287 (if (sb!disassem:dstate-get-inst-prop dstate 'rex-x)
290 (ash 1 index-scale))))))
291 ((and (= mod #b00) (= r/m #b101))
292 (list 'rip (sb!disassem:read-signed-suffix 32 dstate)) )
296 (list full-reg (sb!disassem:read-signed-suffix 8 dstate)))
298 (list full-reg (sb!disassem:read-signed-suffix 32 dstate)))))))
300 (defun read-address (value dstate)
301 (declare (ignore value)) ; always nil anyway
302 (sb!disassem:read-suffix (width-bits (inst-operand-size dstate)) dstate))
304 (defun width-bits (width)
315 ;;;; disassembler argument types
317 ;;; Used to capture the lower four bits of the REX prefix.
318 (sb!disassem:define-arg-type wrxb
319 :prefilter #'prefilter-wrxb)
321 (sb!disassem:define-arg-type width
322 :prefilter #'prefilter-width
323 :printer (lambda (value stream dstate)
324 (declare (ignore value))
325 (princ (schar (symbol-name (inst-operand-size dstate)) 0)
328 (sb!disassem:define-arg-type displacement
330 :use-label #'offset-next
331 :printer (lambda (value stream dstate)
332 (sb!disassem:maybe-note-assembler-routine value nil dstate)
333 (print-label value stream dstate)))
335 (sb!disassem:define-arg-type accum
336 :printer (lambda (value stream dstate)
337 (declare (ignore value)
339 (type sb!disassem:disassem-state dstate))
340 (print-reg 0 stream dstate)))
342 (sb!disassem:define-arg-type reg
343 :prefilter #'prefilter-reg-r
344 :printer #'print-reg)
346 (sb!disassem:define-arg-type reg-b
347 :prefilter #'prefilter-reg-b
348 :printer #'print-reg)
350 (sb!disassem:define-arg-type reg-b-default-qword
351 :prefilter #'prefilter-reg-b
352 :printer #'print-reg-default-qword)
354 (sb!disassem:define-arg-type imm-addr
355 :prefilter #'read-address
356 :printer #'print-label)
358 ;;; Normally, immediate values for an operand size of :qword are of size
359 ;;; :dword and are sign-extended to 64 bits. For an exception, see the
360 ;;; argument type definition following this one.
361 (sb!disassem:define-arg-type signed-imm-data
362 :prefilter (lambda (value dstate)
363 (declare (ignore value)) ; always nil anyway
364 (let ((width (width-bits (inst-operand-size dstate))))
367 (sb!disassem:read-signed-suffix width dstate))))
369 ;;; Used by the variant of the MOV instruction with opcode B8 which can
370 ;;; move immediates of all sizes (i.e. including :qword) into a
372 (sb!disassem:define-arg-type signed-imm-data-upto-qword
373 :prefilter (lambda (value dstate)
374 (declare (ignore value)) ; always nil anyway
375 (sb!disassem:read-signed-suffix
376 (width-bits (inst-operand-size dstate))
379 ;;; Used by those instructions that have a default operand size of
380 ;;; :qword. Nevertheless the immediate is at most of size :dword.
381 ;;; The only instruction of this kind having a variant with an immediate
382 ;;; argument is PUSH.
383 (sb!disassem:define-arg-type signed-imm-data-default-qword
384 :prefilter (lambda (value dstate)
385 (declare (ignore value)) ; always nil anyway
386 (let ((width (width-bits
387 (inst-operand-size-default-qword dstate))))
390 (sb!disassem:read-signed-suffix width dstate))))
392 (sb!disassem:define-arg-type signed-imm-byte
393 :prefilter (lambda (value dstate)
394 (declare (ignore value)) ; always nil anyway
395 (sb!disassem:read-signed-suffix 8 dstate)))
397 (sb!disassem:define-arg-type imm-byte
398 :prefilter (lambda (value dstate)
399 (declare (ignore value)) ; always nil anyway
400 (sb!disassem:read-suffix 8 dstate)))
402 ;;; needed for the ret imm16 instruction
403 (sb!disassem:define-arg-type imm-word-16
404 :prefilter (lambda (value dstate)
405 (declare (ignore value)) ; always nil anyway
406 (sb!disassem:read-suffix 16 dstate)))
408 (sb!disassem:define-arg-type reg/mem
409 :prefilter #'prefilter-reg/mem
410 :printer #'print-reg/mem)
411 (sb!disassem:define-arg-type sized-reg/mem
412 ;; Same as reg/mem, but prints an explicit size indicator for
413 ;; memory references.
414 :prefilter #'prefilter-reg/mem
415 :printer #'print-sized-reg/mem)
417 ;;; Arguments of type reg/mem with a fixed size.
418 (sb!disassem:define-arg-type sized-byte-reg/mem
419 :prefilter #'prefilter-reg/mem
420 :printer #'print-sized-byte-reg/mem)
421 (sb!disassem:define-arg-type sized-word-reg/mem
422 :prefilter #'prefilter-reg/mem
423 :printer #'print-sized-word-reg/mem)
424 (sb!disassem:define-arg-type sized-dword-reg/mem
425 :prefilter #'prefilter-reg/mem
426 :printer #'print-sized-dword-reg/mem)
428 ;;; Same as sized-reg/mem, but with a default operand size of :qword.
429 (sb!disassem:define-arg-type sized-reg/mem-default-qword
430 :prefilter #'prefilter-reg/mem
431 :printer #'print-sized-reg/mem-default-qword)
434 (eval-when (#-sb-xc :compile-toplevel :load-toplevel :execute)
435 (defun print-fp-reg (value stream dstate)
436 (declare (ignore dstate))
437 (format stream "FR~D" value))
438 (defun prefilter-fp-reg (value dstate)
440 (declare (ignore dstate))
443 (sb!disassem:define-arg-type fp-reg
444 :prefilter #'prefilter-fp-reg
445 :printer #'print-fp-reg)
447 (eval-when (:compile-toplevel :load-toplevel :execute)
448 (defparameter *conditions*
451 (:b . 2) (:nae . 2) (:c . 2)
452 (:nb . 3) (:ae . 3) (:nc . 3)
453 (:eq . 4) (:e . 4) (:z . 4)
460 (:np . 11) (:po . 11)
461 (:l . 12) (:nge . 12)
462 (:nl . 13) (:ge . 13)
463 (:le . 14) (:ng . 14)
464 (:nle . 15) (:g . 15)))
465 (defparameter *condition-name-vec*
466 (let ((vec (make-array 16 :initial-element nil)))
467 (dolist (cond *conditions*)
468 (when (null (aref vec (cdr cond)))
469 (setf (aref vec (cdr cond)) (car cond))))
473 ;;; Set assembler parameters. (In CMU CL, this was done with
474 ;;; a call to a macro DEF-ASSEMBLER-PARAMS.)
475 (eval-when (:compile-toplevel :load-toplevel :execute)
476 (setf sb!assem:*assem-scheduler-p* nil))
478 (sb!disassem:define-arg-type condition-code
479 :printer *condition-name-vec*)
481 (defun conditional-opcode (condition)
482 (cdr (assoc condition *conditions* :test #'eq)))
484 ;;;; disassembler instruction formats
486 (eval-when (:compile-toplevel :execute)
487 (defun swap-if (direction field1 separator field2)
488 `(:if (,direction :constant 0)
489 (,field1 ,separator ,field2)
490 (,field2 ,separator ,field1))))
492 (sb!disassem:define-instruction-format (byte 8 :default-printer '(:name))
493 (op :field (byte 8 0))
498 (sb!disassem:define-instruction-format (simple 8)
499 (op :field (byte 7 1))
500 (width :field (byte 1 0) :type 'width)
505 (sb!disassem:define-instruction-format (rex-simple 16)
506 (rex :field (byte 4 4) :value #b0100)
507 (wrxb :field (byte 4 0) :type 'wrxb)
508 (op :field (byte 7 9))
509 (width :field (byte 1 8) :type 'width)
514 ;;; Same as simple, but with direction bit
515 (sb!disassem:define-instruction-format (simple-dir 8 :include 'simple)
516 (op :field (byte 6 2))
517 (dir :field (byte 1 1)))
519 ;;; Same as simple, but with the immediate value occurring by default,
520 ;;; and with an appropiate printer.
521 (sb!disassem:define-instruction-format (accum-imm 8
523 :default-printer '(:name
524 :tab accum ", " imm))
525 (imm :type 'signed-imm-data))
527 (sb!disassem:define-instruction-format (rex-accum-imm 16
529 :default-printer '(:name
530 :tab accum ", " imm))
531 (imm :type 'signed-imm-data))
533 (sb!disassem:define-instruction-format (reg-no-width 8
534 :default-printer '(:name :tab reg))
535 (op :field (byte 5 3))
536 (reg :field (byte 3 0) :type 'reg-b)
541 (sb!disassem:define-instruction-format (rex-reg-no-width 16
542 :default-printer '(:name :tab reg))
543 (rex :field (byte 4 4) :value #b0100)
544 (wrxb :field (byte 4 0) :type 'wrxb)
545 (op :field (byte 5 11))
546 (reg :field (byte 3 8) :type 'reg-b)
551 ;;; Same as reg-no-width, but with a default operand size of :qword.
552 (sb!disassem:define-instruction-format (reg-no-width-default-qword 8
553 :include 'reg-no-width
554 :default-printer '(:name :tab reg))
555 (reg :type 'reg-b-default-qword))
557 ;;; Same as rex-reg-no-width, but with a default operand size of :qword.
558 (sb!disassem:define-instruction-format (rex-reg-no-width-default-qword 16
559 :include 'rex-reg-no-width
560 :default-printer '(:name :tab reg))
561 (reg :type 'reg-b-default-qword))
563 (sb!disassem:define-instruction-format (modrm-reg-no-width 24
564 :default-printer '(:name :tab reg))
565 (rex :field (byte 4 4) :value #b0100)
566 (wrxb :field (byte 4 0) :type 'wrxb)
567 (ff :field (byte 8 8) :value #b11111111)
568 (mod :field (byte 2 22))
569 (modrm-reg :field (byte 3 19))
570 (reg :field (byte 3 16) :type 'reg-b)
575 ;;; Adds a width field to reg-no-width. Note that we can't use
576 ;;; :INCLUDE 'REG-NO-WIDTH here to save typing because that would put
577 ;;; the WIDTH field last, but the prefilter for WIDTH must run before
578 ;;; the one for IMM to be able to determine the correct size of IMM.
579 (sb!disassem:define-instruction-format (reg 8
580 :default-printer '(:name :tab reg))
581 (op :field (byte 4 4))
582 (width :field (byte 1 3) :type 'width)
583 (reg :field (byte 3 0) :type 'reg-b)
588 (sb!disassem:define-instruction-format (rex-reg 16
589 :default-printer '(:name :tab reg))
590 (rex :field (byte 4 4) :value #b0100)
591 (wrxb :field (byte 4 0) :type 'wrxb)
592 (width :field (byte 1 11) :type 'width)
593 (op :field (byte 4 12))
594 (reg :field (byte 3 8) :type 'reg-b)
599 (sb!disassem:define-instruction-format (two-bytes 16
600 :default-printer '(:name))
601 (op :fields (list (byte 8 0) (byte 8 8))))
603 (sb!disassem:define-instruction-format (reg-reg/mem 16
605 `(:name :tab reg ", " reg/mem))
606 (op :field (byte 7 1))
607 (width :field (byte 1 0) :type 'width)
608 (reg/mem :fields (list (byte 2 14) (byte 3 8))
610 (reg :field (byte 3 11) :type 'reg)
614 (sb!disassem:define-instruction-format (rex-reg-reg/mem 24
616 `(:name :tab reg ", " reg/mem))
617 (rex :field (byte 4 4) :value #b0100)
618 (wrxb :field (byte 4 0) :type 'wrxb)
619 (width :field (byte 1 8) :type 'width)
620 (op :field (byte 7 9))
621 (reg/mem :fields (list (byte 2 22) (byte 3 16))
623 (reg :field (byte 3 19) :type 'reg)
627 ;;; same as reg-reg/mem, but with direction bit
628 (sb!disassem:define-instruction-format (reg-reg/mem-dir 16
629 :include 'reg-reg/mem
633 ,(swap-if 'dir 'reg/mem ", " 'reg)))
634 (op :field (byte 6 2))
635 (dir :field (byte 1 1)))
637 (sb!disassem:define-instruction-format (rex-reg-reg/mem-dir 24
638 :include 'rex-reg-reg/mem
642 ,(swap-if 'dir 'reg/mem ", " 'reg)))
643 (rex :field (byte 4 4) :value #b0100)
644 (wrxb :field (byte 4 0) :type 'wrxb)
645 (op :field (byte 6 10))
646 (dir :field (byte 1 9)))
648 ;;; Same as reg-reg/mem, but uses the reg field as a second op code.
649 (sb!disassem:define-instruction-format (reg/mem 16
650 :default-printer '(:name :tab reg/mem))
651 (op :fields (list (byte 7 1) (byte 3 11)))
652 (width :field (byte 1 0) :type 'width)
653 (reg/mem :fields (list (byte 2 14) (byte 3 8))
654 :type 'sized-reg/mem)
658 (sb!disassem:define-instruction-format (rex-reg/mem 24
659 :default-printer '(:name :tab reg/mem))
660 (rex :field (byte 4 4) :value #b0100)
661 (wrxb :field (byte 4 0) :type 'wrxb)
662 (op :fields (list (byte 7 9) (byte 3 19)))
663 (width :field (byte 1 8) :type 'width)
664 (reg/mem :fields (list (byte 2 22) (byte 3 16))
665 :type 'sized-reg/mem)
669 ;;; Same as reg/mem, but without a width field and with a default
670 ;;; operand size of :qword.
671 (sb!disassem:define-instruction-format (reg/mem-default-qword 16
672 :default-printer '(:name :tab reg/mem))
673 (op :fields (list (byte 8 0) (byte 3 11)))
674 (reg/mem :fields (list (byte 2 14) (byte 3 8))
675 :type 'sized-reg/mem-default-qword))
677 (sb!disassem:define-instruction-format (rex-reg/mem-default-qword 24
678 :default-printer '(:name :tab reg/mem))
679 (rex :field (byte 4 4) :value #b0100)
680 (wrxb :field (byte 4 0) :type 'wrxb)
681 (op :fields (list (byte 8 8) (byte 3 19)))
682 (reg/mem :fields (list (byte 2 22) (byte 3 16))
683 :type 'sized-reg/mem-default-qword))
685 ;;; Same as reg/mem, but with the immediate value occurring by default,
686 ;;; and with an appropiate printer.
687 (sb!disassem:define-instruction-format (reg/mem-imm 16
690 '(:name :tab reg/mem ", " imm))
691 (reg/mem :type 'sized-reg/mem)
692 (imm :type 'signed-imm-data))
694 (sb!disassem:define-instruction-format (rex-reg/mem-imm 24
695 :include 'rex-reg/mem
697 '(:name :tab reg/mem ", " imm))
698 (reg/mem :type 'sized-reg/mem)
699 (imm :type 'signed-imm-data))
701 ;;; Same as reg/mem, but with using the accumulator in the default printer
702 (sb!disassem:define-instruction-format
704 :include 'reg/mem :default-printer '(:name :tab accum ", " reg/mem))
705 (reg/mem :type 'reg/mem) ; don't need a size
706 (accum :type 'accum))
708 ;;; Same as reg-reg/mem, but with a prefix of #b00001111
709 (sb!disassem:define-instruction-format (ext-reg-reg/mem 24
711 `(:name :tab reg ", " reg/mem))
712 (prefix :field (byte 8 0) :value #b00001111)
713 (op :field (byte 7 9))
714 (width :field (byte 1 8) :type 'width)
715 (reg/mem :fields (list (byte 2 22) (byte 3 16))
717 (reg :field (byte 3 19) :type 'reg)
721 (sb!disassem:define-instruction-format (ext-reg-reg/mem-no-width 24
723 `(:name :tab reg ", " reg/mem))
724 (prefix :field (byte 8 0) :value #b00001111)
725 (op :field (byte 8 8))
726 (reg/mem :fields (list (byte 2 22) (byte 3 16))
728 (reg :field (byte 3 19) :type 'reg))
730 (sb!disassem:define-instruction-format (rex-ext-reg-reg/mem-no-width 32
732 `(:name :tab reg ", " reg/mem))
733 (rex :field (byte 4 4) :value #b0100)
734 (wrxb :field (byte 4 0) :type 'wrxb)
735 (prefix :field (byte 8 8) :value #b00001111)
736 (op :field (byte 8 16))
737 (reg/mem :fields (list (byte 2 30) (byte 3 24))
739 (reg :field (byte 3 27) :type 'reg))
741 ;;; Same as reg-reg/mem, but with a prefix of #xf2 0f
742 (sb!disassem:define-instruction-format (xmm-ext-reg-reg/mem 32
744 `(:name :tab reg ", " reg/mem))
745 (prefix :field (byte 8 0) :value #xf2)
746 (prefix2 :field (byte 8 8) :value #x0f)
747 (op :field (byte 7 17))
748 (width :field (byte 1 16) :type 'width)
749 (reg/mem :fields (list (byte 2 30) (byte 3 24))
751 (reg :field (byte 3 27) :type 'reg)
755 ;;; reg-no-width with #x0f prefix
756 (sb!disassem:define-instruction-format (ext-reg-no-width 16
757 :default-printer '(:name :tab reg))
758 (prefix :field (byte 8 0) :value #b00001111)
759 (op :field (byte 5 11))
760 (reg :field (byte 3 8) :type 'reg-b))
762 ;;; Same as reg/mem, but with a prefix of #b00001111
763 (sb!disassem:define-instruction-format (ext-reg/mem 24
764 :default-printer '(:name :tab reg/mem))
765 (prefix :field (byte 8 0) :value #b00001111)
766 (op :fields (list (byte 7 9) (byte 3 19)))
767 (width :field (byte 1 8) :type 'width)
768 (reg/mem :fields (list (byte 2 22) (byte 3 16))
769 :type 'sized-reg/mem)
773 (sb!disassem:define-instruction-format (ext-reg/mem-imm 24
774 :include 'ext-reg/mem
776 '(:name :tab reg/mem ", " imm))
777 (imm :type 'signed-imm-data))
779 ;;;; This section was added by jrd, for fp instructions.
781 ;;; regular fp inst to/from registers/memory
782 (sb!disassem:define-instruction-format (floating-point 16
784 `(:name :tab reg/mem))
785 (prefix :field (byte 5 3) :value #b11011)
786 (op :fields (list (byte 3 0) (byte 3 11)))
787 (reg/mem :fields (list (byte 2 14) (byte 3 8)) :type 'reg/mem))
789 ;;; fp insn to/from fp reg
790 (sb!disassem:define-instruction-format (floating-point-fp 16
791 :default-printer `(:name :tab fp-reg))
792 (prefix :field (byte 5 3) :value #b11011)
793 (suffix :field (byte 2 14) :value #b11)
794 (op :fields (list (byte 3 0) (byte 3 11)))
795 (fp-reg :field (byte 3 8) :type 'fp-reg))
797 ;;; fp insn to/from fp reg, with the reversed source/destination flag.
798 (sb!disassem:define-instruction-format
799 (floating-point-fp-d 16
800 :default-printer `(:name :tab ,(swap-if 'd "ST0" ", " 'fp-reg)))
801 (prefix :field (byte 5 3) :value #b11011)
802 (suffix :field (byte 2 14) :value #b11)
803 (op :fields (list (byte 2 0) (byte 3 11)))
804 (d :field (byte 1 2))
805 (fp-reg :field (byte 3 8) :type 'fp-reg))
808 ;;; (added by (?) pfw)
809 ;;; fp no operand isns
810 (sb!disassem:define-instruction-format (floating-point-no 16
811 :default-printer '(:name))
812 (prefix :field (byte 8 0) :value #b11011001)
813 (suffix :field (byte 3 13) :value #b111)
814 (op :field (byte 5 8)))
816 (sb!disassem:define-instruction-format (floating-point-3 16
817 :default-printer '(:name))
818 (prefix :field (byte 5 3) :value #b11011)
819 (suffix :field (byte 2 14) :value #b11)
820 (op :fields (list (byte 3 0) (byte 6 8))))
822 (sb!disassem:define-instruction-format (floating-point-5 16
823 :default-printer '(:name))
824 (prefix :field (byte 8 0) :value #b11011011)
825 (suffix :field (byte 3 13) :value #b111)
826 (op :field (byte 5 8)))
828 (sb!disassem:define-instruction-format (floating-point-st 16
829 :default-printer '(:name))
830 (prefix :field (byte 8 0) :value #b11011111)
831 (suffix :field (byte 3 13) :value #b111)
832 (op :field (byte 5 8)))
834 (sb!disassem:define-instruction-format (string-op 8
836 :default-printer '(:name width)))
838 (sb!disassem:define-instruction-format (rex-string-op 16
840 :default-printer '(:name width)))
842 (sb!disassem:define-instruction-format (short-cond-jump 16)
843 (op :field (byte 4 4))
844 (cc :field (byte 4 0) :type 'condition-code)
845 (label :field (byte 8 8) :type 'displacement))
847 (sb!disassem:define-instruction-format (short-jump 16
848 :default-printer '(:name :tab label))
849 (const :field (byte 4 4) :value #b1110)
850 (op :field (byte 4 0))
851 (label :field (byte 8 8) :type 'displacement))
853 (sb!disassem:define-instruction-format (near-cond-jump 16)
854 (op :fields (list (byte 8 0) (byte 4 12)) :value '(#b00001111 #b1000))
855 (cc :field (byte 4 8) :type 'condition-code)
856 ;; The disassembler currently doesn't let you have an instruction > 32 bits
857 ;; long, so we fake it by using a prefilter to read the offset.
858 (label :type 'displacement
859 :prefilter (lambda (value dstate)
860 (declare (ignore value)) ; always nil anyway
861 (sb!disassem:read-signed-suffix 32 dstate))))
863 (sb!disassem:define-instruction-format (near-jump 8
864 :default-printer '(:name :tab label))
865 (op :field (byte 8 0))
866 ;; The disassembler currently doesn't let you have an instruction > 32 bits
867 ;; long, so we fake it by using a prefilter to read the address.
868 (label :type 'displacement
869 :prefilter (lambda (value dstate)
870 (declare (ignore value)) ; always nil anyway
871 (sb!disassem:read-signed-suffix 32 dstate))))
874 (sb!disassem:define-instruction-format (cond-set 24
875 :default-printer '('set cc :tab reg/mem))
876 (prefix :field (byte 8 0) :value #b00001111)
877 (op :field (byte 4 12) :value #b1001)
878 (cc :field (byte 4 8) :type 'condition-code)
879 (reg/mem :fields (list (byte 2 22) (byte 3 16))
880 :type 'sized-byte-reg/mem)
881 (reg :field (byte 3 19) :value #b000))
883 (sb!disassem:define-instruction-format (cond-move 24
885 '('cmov cc :tab reg ", " reg/mem))
886 (prefix :field (byte 8 0) :value #b00001111)
887 (op :field (byte 4 12) :value #b0100)
888 (cc :field (byte 4 8) :type 'condition-code)
889 (reg/mem :fields (list (byte 2 22) (byte 3 16))
891 (reg :field (byte 3 19) :type 'reg))
893 (sb!disassem:define-instruction-format (enter-format 32
894 :default-printer '(:name
896 (:unless (:constant 0)
898 (op :field (byte 8 0))
899 (disp :field (byte 16 8))
900 (level :field (byte 8 24)))
902 ;;; Single byte instruction with an immediate byte argument.
903 (sb!disassem:define-instruction-format (byte-imm 16
904 :default-printer '(:name :tab code))
905 (op :field (byte 8 0))
906 (code :field (byte 8 8)))
908 ;;;; primitive emitters
910 (define-bitfield-emitter emit-word 16
913 (define-bitfield-emitter emit-dword 32
916 (define-bitfield-emitter emit-qword 64
919 (define-bitfield-emitter emit-byte-with-reg 8
920 (byte 5 3) (byte 3 0))
922 (define-bitfield-emitter emit-mod-reg-r/m-byte 8
923 (byte 2 6) (byte 3 3) (byte 3 0))
925 (define-bitfield-emitter emit-sib-byte 8
926 (byte 2 6) (byte 3 3) (byte 3 0))
928 (define-bitfield-emitter emit-rex-byte 8
929 (byte 4 4) (byte 1 3) (byte 1 2) (byte 1 1) (byte 1 0))
935 (defun emit-absolute-fixup (segment fixup &optional quad-p)
936 (note-fixup segment (if quad-p :absolute64 :absolute) fixup)
937 (let ((offset (fixup-offset fixup)))
939 (emit-back-patch segment
941 (lambda (segment posn)
942 (declare (ignore posn))
943 (let ((val (- (+ (component-header-length)
944 (or (label-position offset)
946 other-pointer-lowtag)))
948 (emit-qword segment val )
949 (emit-dword segment val )))))
951 (emit-qword segment (or offset 0))
952 (emit-dword segment (or offset 0))))))
954 (defun emit-relative-fixup (segment fixup)
955 (note-fixup segment :relative fixup)
956 (emit-dword segment (or (fixup-offset fixup) 0)))
959 ;;;; the effective-address (ea) structure
961 (defun reg-tn-encoding (tn)
962 (declare (type tn tn))
963 (aver (member (sb-name (sc-sb (tn-sc tn))) '(registers float-registers)))
964 ;; ea only has space for three bits of register number: regs r8
965 ;; and up are selected by a REX prefix byte which caller is responsible
966 ;; for having emitted where necessary already
967 (cond ((fp-reg-tn-p tn)
968 (mod (tn-offset tn) 8))
970 (let ((offset (mod (tn-offset tn) 16)))
971 (logior (ash (logand offset 1) 2)
974 (defstruct (ea (:constructor make-ea (size &key base index scale disp))
976 ;; note that we can represent an EA qith a QWORD size, but EMIT-EA
977 ;; can't actually emit it on its own: caller also needs to emit REX
979 (size nil :type (member :byte :word :dword :qword))
980 (base nil :type (or tn null))
981 (index nil :type (or tn null))
982 (scale 1 :type (member 1 2 4 8))
983 (disp 0 :type (or (unsigned-byte 32) (signed-byte 32) fixup)))
984 (def!method print-object ((ea ea) stream)
985 (cond ((or *print-escape* *print-readably*)
986 (print-unreadable-object (ea stream :type t)
988 "~S~@[ base=~S~]~@[ index=~S~]~@[ scale=~S~]~@[ disp=~S~]"
992 (let ((scale (ea-scale ea)))
993 (if (= scale 1) nil scale))
996 (format stream "~A PTR [" (symbol-name (ea-size ea)))
998 (write-string (sb!c::location-print-name (ea-base ea)) stream)
1000 (write-string "+" stream)))
1002 (write-string (sb!c::location-print-name (ea-index ea)) stream))
1003 (unless (= (ea-scale ea) 1)
1004 (format stream "*~A" (ea-scale ea)))
1005 (typecase (ea-disp ea)
1008 (format stream "~@D" (ea-disp ea)))
1010 (format stream "+~A" (ea-disp ea))))
1011 (write-char #\] stream))))
1013 (defun emit-constant-tn-rip (segment constant-tn reg)
1014 ;; AMD64 doesn't currently have a code object register to use as a
1015 ;; base register for constant access. Instead we use RIP-relative
1016 ;; addressing. The offset from the SIMPLE-FUN-HEADER to the instruction
1017 ;; is passed to the backpatch callback. In addition we need the offset
1018 ;; from the start of the function header to the slot in the CODE-HEADER
1019 ;; that stores the constant. Since we don't know where the code header
1020 ;; starts, instead count backwards from the function header.
1021 (let* ((2comp (component-info *component-being-compiled*))
1022 (constants (ir2-component-constants 2comp))
1023 (len (length constants))
1024 ;; Both CODE-HEADER and SIMPLE-FUN-HEADER are 16-byte aligned.
1025 ;; If there are an even amount of constants, there will be
1026 ;; an extra qword of padding before the function header, which
1027 ;; needs to be adjusted for. XXX: This will break if new slots
1028 ;; are added to the code header.
1029 (offset (* (- (+ len (if (evenp len)
1032 (tn-offset constant-tn))
1034 ;; RIP-relative addressing
1035 (emit-mod-reg-r/m-byte segment #b00 reg #b101)
1036 (emit-back-patch segment
1038 (lambda (segment posn)
1039 ;; The addressing is relative to end of instruction,
1040 ;; i.e. the end of this dword. Hence the + 4.
1041 (emit-dword segment (+ 4 (- (+ offset posn)))))))
1044 (defun emit-label-rip (segment fixup reg)
1045 (let ((label (fixup-offset fixup)))
1046 ;; RIP-relative addressing
1047 (emit-mod-reg-r/m-byte segment #b00 reg #b101)
1048 (emit-back-patch segment
1050 (lambda (segment posn)
1051 (emit-dword segment (- (label-position label)
1055 (defun emit-ea (segment thing reg &optional allow-constants)
1058 ;; this would be eleganter if we had a function that would create
1060 (ecase (sb-name (sc-sb (tn-sc thing)))
1061 ((registers float-registers)
1062 (emit-mod-reg-r/m-byte segment #b11 reg (reg-tn-encoding thing)))
1064 ;; Convert stack tns into an index off RBP.
1065 (let ((disp (- (* (1+ (tn-offset thing)) n-word-bytes))))
1066 (cond ((< -128 disp 127)
1067 (emit-mod-reg-r/m-byte segment #b01 reg #b101)
1068 (emit-byte segment disp))
1070 (emit-mod-reg-r/m-byte segment #b10 reg #b101)
1071 (emit-dword segment disp)))))
1073 (unless allow-constants
1076 "Constant TNs can only be directly used in MOV, PUSH, and CMP."))
1077 (emit-constant-tn-rip segment thing reg))))
1079 (let* ((base (ea-base thing))
1080 (index (ea-index thing))
1081 (scale (ea-scale thing))
1082 (disp (ea-disp thing))
1083 (mod (cond ((or (null base)
1085 (not (= (reg-tn-encoding base) #b101))))
1087 ((and (fixnump disp) (<= -128 disp 127))
1091 (r/m (cond (index #b100)
1093 (t (reg-tn-encoding base)))))
1094 (when (and (= mod 0) (= r/m #b101))
1095 ;; this is rip-relative in amd64, so we'll use a sib instead
1096 (setf r/m #b100 scale 1))
1097 (emit-mod-reg-r/m-byte segment mod reg r/m)
1099 (let ((ss (1- (integer-length scale)))
1100 (index (if (null index)
1102 (let ((index (reg-tn-encoding index)))
1104 (error "can't index off of ESP")
1106 (base (if (null base)
1108 (reg-tn-encoding base))))
1109 (emit-sib-byte segment ss index base)))
1111 (emit-byte segment disp))
1112 ((or (= mod #b10) (null base))
1114 (emit-absolute-fixup segment disp)
1115 (emit-dword segment disp))))))
1117 (typecase (fixup-offset thing)
1119 (emit-label-rip segment thing reg))
1121 (emit-mod-reg-r/m-byte segment #b00 reg #b100)
1122 (emit-sib-byte segment 0 #b100 #b101)
1123 (emit-absolute-fixup segment thing))))))
1125 (defun fp-reg-tn-p (thing)
1127 (eq (sb-name (sc-sb (tn-sc thing))) 'float-registers)))
1129 ;;; like the above, but for fp-instructions--jrd
1130 (defun emit-fp-op (segment thing op)
1131 (if (fp-reg-tn-p thing)
1132 (emit-byte segment (dpb op (byte 3 3) (dpb (tn-offset thing)
1135 (emit-ea segment thing op)))
1137 (defun byte-reg-p (thing)
1139 (eq (sb-name (sc-sb (tn-sc thing))) 'registers)
1140 (member (sc-name (tn-sc thing)) *byte-sc-names*)
1143 (defun byte-ea-p (thing)
1145 (ea (eq (ea-size thing) :byte))
1147 (and (member (sc-name (tn-sc thing)) *byte-sc-names*) t))
1150 (defun word-reg-p (thing)
1152 (eq (sb-name (sc-sb (tn-sc thing))) 'registers)
1153 (member (sc-name (tn-sc thing)) *word-sc-names*)
1156 (defun word-ea-p (thing)
1158 (ea (eq (ea-size thing) :word))
1159 (tn (and (member (sc-name (tn-sc thing)) *word-sc-names*) t))
1162 (defun dword-reg-p (thing)
1164 (eq (sb-name (sc-sb (tn-sc thing))) 'registers)
1165 (member (sc-name (tn-sc thing)) *dword-sc-names*)
1168 (defun dword-ea-p (thing)
1170 (ea (eq (ea-size thing) :dword))
1172 (and (member (sc-name (tn-sc thing)) *dword-sc-names*) t))
1175 (defun qword-reg-p (thing)
1177 (eq (sb-name (sc-sb (tn-sc thing))) 'registers)
1178 (member (sc-name (tn-sc thing)) *qword-sc-names*)
1181 (defun qword-ea-p (thing)
1183 (ea (eq (ea-size thing) :qword))
1185 (and (member (sc-name (tn-sc thing)) *qword-sc-names*) t))
1188 (defun register-p (thing)
1190 (eq (sb-name (sc-sb (tn-sc thing))) 'registers)))
1192 (defun accumulator-p (thing)
1193 (and (register-p thing)
1194 (= (tn-offset thing) 0)))
1199 (def!constant +operand-size-prefix-byte+ #b01100110)
1201 (defun maybe-emit-operand-size-prefix (segment size)
1202 (unless (or (eq size :byte)
1203 (eq size :qword) ; REX prefix handles this
1204 (eq size +default-operand-size+))
1205 (emit-byte segment +operand-size-prefix-byte+)))
1207 (defun maybe-emit-rex-prefix (segment operand-size r x b)
1209 (if (and r (> (tn-offset r)
1210 ;; offset of r8 is 16, offset of xmm8 is 8
1216 (let ((rex-w (if (eq operand-size :qword) 1 0))
1220 (when (or (eq operand-size :byte) ;; REX needed to access SIL/DIL
1221 (not (zerop (logior rex-w rex-r rex-x rex-b))))
1222 (emit-rex-byte segment #b0100 rex-w rex-r rex-x rex-b)))))
1224 (defun maybe-emit-rex-for-ea (segment ea reg &key operand-size)
1225 (let ((ea-p (ea-p ea))) ;emit-ea can also be called with a tn
1226 (maybe-emit-rex-prefix segment
1227 (or operand-size (operand-size ea))
1229 (and ea-p (ea-index ea))
1230 (cond (ea-p (ea-base ea))
1232 (member (sb-name (sc-sb (tn-sc ea)))
1233 '(float-registers registers)))
1237 (defun operand-size (thing)
1240 ;; FIXME: might as well be COND instead of having to use #. readmacro
1241 ;; to hack up the code
1242 (case (sc-name (tn-sc thing))
1251 ;; added by jrd: float-registers is a separate size (?)
1254 (#.*double-sc-names*
1257 (error "can't tell the size of ~S ~S" thing (sc-name (tn-sc thing))))))
1261 ;; GNA. Guess who spelt "flavor" correctly first time round?
1262 ;; There's a strong argument in my mind to change all uses of
1263 ;; "flavor" to "kind": and similarly with some misguided uses of
1264 ;; "type" here and there. -- CSR, 2005-01-06.
1265 (case (fixup-flavor thing)
1266 ((:foreign-dataref) :qword)))
1270 (defun matching-operand-size (dst src)
1271 (let ((dst-size (operand-size dst))
1272 (src-size (operand-size src)))
1275 (if (eq dst-size src-size)
1277 (error "size mismatch: ~S is a ~S and ~S is a ~S."
1278 dst dst-size src src-size))
1282 (error "can't tell the size of either ~S or ~S" dst src)))))
1284 (defun emit-sized-immediate (segment size value &optional quad-p)
1287 (emit-byte segment value))
1289 (emit-word segment value))
1291 ;; except in a very few cases (MOV instructions A1,A3,B8) we expect
1292 ;; dword data bytes even when 64 bit work is being done. So, mostly
1293 ;; we treat quad constants as dwords.
1294 (if (and quad-p (eq size :qword))
1295 (emit-qword segment value)
1296 (emit-dword segment value)))))
1298 ;;;; general data transfer
1300 (define-instruction mov (segment dst src)
1301 ;; immediate to register
1302 (:printer reg ((op #b1011) (imm nil :type 'signed-imm-data))
1303 '(:name :tab reg ", " imm))
1304 (:printer rex-reg ((op #b1011) (imm nil :type 'signed-imm-data-upto-qword))
1305 '(:name :tab reg ", " imm))
1306 ;; absolute mem to/from accumulator
1307 (:printer simple-dir ((op #b101000) (imm nil :type 'imm-addr))
1308 `(:name :tab ,(swap-if 'dir 'accum ", " '("[" imm "]"))))
1309 ;; register to/from register/memory
1310 (:printer reg-reg/mem-dir ((op #b100010)))
1311 (:printer rex-reg-reg/mem-dir ((op #b100010)))
1312 ;; immediate to register/memory
1313 (:printer reg/mem-imm ((op '(#b1100011 #b000))))
1314 (:printer rex-reg/mem-imm ((op '(#b1100011 #b000))))
1317 (let ((size (matching-operand-size dst src)))
1318 (maybe-emit-operand-size-prefix segment size)
1319 (cond ((register-p dst)
1320 (cond ((integerp src)
1321 (maybe-emit-rex-prefix segment size nil nil dst)
1322 (emit-byte-with-reg segment
1326 (reg-tn-encoding dst))
1327 (emit-sized-immediate segment size src (eq size :qword)))
1329 (maybe-emit-rex-for-ea segment src dst)
1334 (emit-ea segment src (reg-tn-encoding dst) t))))
1336 ;; C7 only deals with 32 bit immediates even if register is
1337 ;; 64 bit: only b8-bf use 64 bit immediates
1338 (maybe-emit-rex-for-ea segment dst nil)
1339 (cond ((typep src '(or (signed-byte 32) (unsigned-byte 32)))
1341 (if (eq size :byte) #b11000110 #b11000111))
1342 (emit-ea segment dst #b000)
1343 (emit-sized-immediate segment
1344 (case size (:qword :dword) (t size))
1349 (maybe-emit-rex-for-ea segment dst src)
1350 (emit-byte segment (if (eq size :byte) #b10001000 #b10001001))
1351 (emit-ea segment dst (reg-tn-encoding src)))
1353 ;; Generally we can't MOV a fixupped value into an EA, since
1354 ;; MOV on non-registers can only take a 32-bit immediate arg.
1355 ;; Make an exception for :FOREIGN fixups (pretty much just
1356 ;; the runtime asm, since other foreign calls go through the
1357 ;; the linkage table) and for linkage table references, since
1358 ;; these should always end up in low memory.
1359 (aver (or (eq (fixup-flavor src) :foreign)
1360 (eq (fixup-flavor src) :foreign-dataref)
1361 (eq (ea-size dst) :dword)))
1362 (maybe-emit-rex-for-ea segment dst nil)
1363 (emit-byte segment #b11000111)
1364 (emit-ea segment dst #b000)
1365 (emit-absolute-fixup segment src))
1367 (error "bogus arguments to MOV: ~S ~S" dst src))))))
1369 (defun emit-move-with-extension (segment dst src signed-p)
1370 (aver (register-p dst))
1371 (let ((dst-size (operand-size dst))
1372 (src-size (operand-size src))
1373 (opcode (if signed-p #b10111110 #b10110110)))
1376 (aver (eq src-size :byte))
1377 (maybe-emit-operand-size-prefix segment :word)
1378 (emit-byte segment #b00001111)
1379 (emit-byte segment opcode)
1380 (emit-ea segment src (reg-tn-encoding dst)))
1384 (maybe-emit-operand-size-prefix segment :dword)
1385 (maybe-emit-rex-for-ea segment src dst
1386 :operand-size (operand-size dst))
1387 (emit-byte segment #b00001111)
1388 (emit-byte segment opcode)
1389 (emit-ea segment src (reg-tn-encoding dst)))
1391 (maybe-emit-rex-for-ea segment src dst
1392 :operand-size (operand-size dst))
1393 (emit-byte segment #b00001111)
1394 (emit-byte segment (logior opcode 1))
1395 (emit-ea segment src (reg-tn-encoding dst)))
1397 (aver (eq dst-size :qword))
1398 ;; dst is in reg, src is in modrm
1399 (let ((ea-p (ea-p src)))
1400 (maybe-emit-rex-prefix segment (if signed-p :qword :dword) dst
1401 (and ea-p (ea-index src))
1402 (cond (ea-p (ea-base src))
1405 (emit-byte segment #x63) ;movsxd
1406 ;;(emit-byte segment opcode)
1407 (emit-ea segment src (reg-tn-encoding dst)))))))))
1409 (define-instruction movsx (segment dst src)
1410 (:printer ext-reg-reg/mem-no-width
1411 ((op #b10111110) (reg/mem nil :type 'sized-byte-reg/mem)))
1412 (:printer rex-ext-reg-reg/mem-no-width
1413 ((op #b10111110) (reg/mem nil :type 'sized-byte-reg/mem)))
1414 (:printer ext-reg-reg/mem-no-width
1415 ((op #b10111111) (reg/mem nil :type 'sized-word-reg/mem)))
1416 (:printer rex-ext-reg-reg/mem-no-width
1417 ((op #b10111111) (reg/mem nil :type 'sized-word-reg/mem)))
1418 (:emitter (emit-move-with-extension segment dst src :signed)))
1420 (define-instruction movzx (segment dst src)
1421 (:printer ext-reg-reg/mem-no-width
1422 ((op #b10110110) (reg/mem nil :type 'sized-byte-reg/mem)))
1423 (:printer rex-ext-reg-reg/mem-no-width
1424 ((op #b10110110) (reg/mem nil :type 'sized-byte-reg/mem)))
1425 (:printer ext-reg-reg/mem-no-width
1426 ((op #b10110111) (reg/mem nil :type 'sized-word-reg/mem)))
1427 (:printer rex-ext-reg-reg/mem-no-width
1428 ((op #b10110111) (reg/mem nil :type 'sized-word-reg/mem)))
1429 (:emitter (emit-move-with-extension segment dst src nil)))
1431 (define-instruction movsxd (segment dst src)
1432 (:printer rex-reg-reg/mem ((op #b0110001) (width 1)
1433 (reg/mem nil :type 'sized-dword-reg/mem)))
1434 (:emitter (emit-move-with-extension segment dst src :signed)))
1436 ;;; this is not a real amd64 instruction, of course
1437 (define-instruction movzxd (segment dst src)
1438 ; (:printer reg-reg/mem ((op #x63) (reg nil :type 'reg)))
1439 (:emitter (emit-move-with-extension segment dst src nil)))
1441 (define-instruction push (segment src)
1443 (:printer reg-no-width-default-qword ((op #b01010)))
1444 (:printer rex-reg-no-width-default-qword ((op #b01010)))
1446 (:printer reg/mem-default-qword ((op '(#b11111111 #b110))))
1447 (:printer rex-reg/mem-default-qword ((op '(#b11111111 #b110))))
1449 (:printer byte ((op #b01101010) (imm nil :type 'signed-imm-byte))
1451 (:printer byte ((op #b01101000)
1452 (imm nil :type 'signed-imm-data-default-qword))
1454 ;; ### segment registers?
1457 (cond ((integerp src)
1458 (cond ((<= -128 src 127)
1459 (emit-byte segment #b01101010)
1460 (emit-byte segment src))
1462 ;; AMD64 manual says no REX needed but is unclear
1463 ;; whether it expects 32 or 64 bit immediate here
1464 (emit-byte segment #b01101000)
1465 (emit-dword segment src))))
1467 (let ((size (operand-size src)))
1468 (aver (not (eq size :byte)))
1469 (maybe-emit-operand-size-prefix segment size)
1470 (maybe-emit-rex-for-ea segment src nil)
1471 (cond ((register-p src)
1472 (emit-byte-with-reg segment #b01010 (reg-tn-encoding src)))
1474 (emit-byte segment #b11111111)
1475 (emit-ea segment src #b110 t))))))))
1477 (define-instruction pusha (segment)
1478 (:printer byte ((op #b01100000)))
1480 (emit-byte segment #b01100000)))
1482 (define-instruction pop (segment dst)
1483 (:printer reg-no-width-default-qword ((op #b01011)))
1484 (:printer rex-reg-no-width-default-qword ((op #b01011)))
1485 (:printer reg/mem-default-qword ((op '(#b10001111 #b000))))
1486 (:printer rex-reg/mem-default-qword ((op '(#b10001111 #b000))))
1488 (let ((size (operand-size dst)))
1489 (aver (not (eq size :byte)))
1490 (maybe-emit-operand-size-prefix segment size)
1491 (maybe-emit-rex-for-ea segment dst nil)
1492 (cond ((register-p dst)
1493 (emit-byte-with-reg segment #b01011 (reg-tn-encoding dst)))
1495 (emit-byte segment #b10001111)
1496 (emit-ea segment dst #b000))))))
1498 (define-instruction popa (segment)
1499 (:printer byte ((op #b01100001)))
1501 (emit-byte segment #b01100001)))
1503 (define-instruction xchg (segment operand1 operand2)
1504 ;; Register with accumulator.
1505 (:printer reg-no-width ((op #b10010)) '(:name :tab accum ", " reg))
1506 ;; Register/Memory with Register.
1507 (:printer reg-reg/mem ((op #b1000011)))
1508 (:printer rex-reg-reg/mem ((op #b1000011)))
1510 (let ((size (matching-operand-size operand1 operand2)))
1511 (maybe-emit-operand-size-prefix segment size)
1512 (labels ((xchg-acc-with-something (acc something)
1513 (if (and (not (eq size :byte)) (register-p something))
1515 (maybe-emit-rex-for-ea segment acc something)
1516 (emit-byte-with-reg segment
1518 (reg-tn-encoding something)))
1519 (xchg-reg-with-something acc something)))
1520 (xchg-reg-with-something (reg something)
1521 (maybe-emit-rex-for-ea segment something reg)
1522 (emit-byte segment (if (eq size :byte) #b10000110 #b10000111))
1523 (emit-ea segment something (reg-tn-encoding reg))))
1524 (cond ((accumulator-p operand1)
1525 (xchg-acc-with-something operand1 operand2))
1526 ((accumulator-p operand2)
1527 (xchg-acc-with-something operand2 operand1))
1528 ((register-p operand1)
1529 (xchg-reg-with-something operand1 operand2))
1530 ((register-p operand2)
1531 (xchg-reg-with-something operand2 operand1))
1533 (error "bogus args to XCHG: ~S ~S" operand1 operand2)))))))
1535 (define-instruction lea (segment dst src)
1536 (:printer rex-reg-reg/mem ((op #b1000110)))
1537 (:printer reg-reg/mem ((op #b1000110) (width 1)))
1539 (aver (or (dword-reg-p dst) (qword-reg-p dst)))
1540 (maybe-emit-rex-for-ea segment src dst
1541 :operand-size :qword)
1542 (emit-byte segment #b10001101)
1543 (emit-ea segment src (reg-tn-encoding dst))))
1545 (define-instruction cmpxchg (segment dst src)
1546 ;; Register/Memory with Register.
1547 (:printer ext-reg-reg/mem ((op #b1011000)) '(:name :tab reg/mem ", " reg))
1549 (aver (register-p src))
1550 (let ((size (matching-operand-size src dst)))
1551 (maybe-emit-operand-size-prefix segment size)
1552 (maybe-emit-rex-for-ea segment dst src)
1553 (emit-byte segment #b00001111)
1554 (emit-byte segment (if (eq size :byte) #b10110000 #b10110001))
1555 (emit-ea segment dst (reg-tn-encoding src)))))
1559 (define-instruction fs-segment-prefix (segment)
1561 (emit-byte segment #x64)))
1563 ;;;; flag control instructions
1565 ;;; CLC -- Clear Carry Flag.
1566 (define-instruction clc (segment)
1567 (:printer byte ((op #b11111000)))
1569 (emit-byte segment #b11111000)))
1571 ;;; CLD -- Clear Direction Flag.
1572 (define-instruction cld (segment)
1573 (:printer byte ((op #b11111100)))
1575 (emit-byte segment #b11111100)))
1577 ;;; CLI -- Clear Iterrupt Enable Flag.
1578 (define-instruction cli (segment)
1579 (:printer byte ((op #b11111010)))
1581 (emit-byte segment #b11111010)))
1583 ;;; CMC -- Complement Carry Flag.
1584 (define-instruction cmc (segment)
1585 (:printer byte ((op #b11110101)))
1587 (emit-byte segment #b11110101)))
1589 ;;; LAHF -- Load AH into flags.
1590 (define-instruction lahf (segment)
1591 (:printer byte ((op #b10011111)))
1593 (emit-byte segment #b10011111)))
1595 ;;; POPF -- Pop flags.
1596 (define-instruction popf (segment)
1597 (:printer byte ((op #b10011101)))
1599 (emit-byte segment #b10011101)))
1601 ;;; PUSHF -- push flags.
1602 (define-instruction pushf (segment)
1603 (:printer byte ((op #b10011100)))
1605 (emit-byte segment #b10011100)))
1607 ;;; SAHF -- Store AH into flags.
1608 (define-instruction sahf (segment)
1609 (:printer byte ((op #b10011110)))
1611 (emit-byte segment #b10011110)))
1613 ;;; STC -- Set Carry Flag.
1614 (define-instruction stc (segment)
1615 (:printer byte ((op #b11111001)))
1617 (emit-byte segment #b11111001)))
1619 ;;; STD -- Set Direction Flag.
1620 (define-instruction std (segment)
1621 (:printer byte ((op #b11111101)))
1623 (emit-byte segment #b11111101)))
1625 ;;; STI -- Set Interrupt Enable Flag.
1626 (define-instruction sti (segment)
1627 (:printer byte ((op #b11111011)))
1629 (emit-byte segment #b11111011)))
1633 (defun emit-random-arith-inst (name segment dst src opcode
1634 &optional allow-constants)
1635 (let ((size (matching-operand-size dst src)))
1636 (maybe-emit-operand-size-prefix segment size)
1639 (cond ((and (not (eq size :byte)) (<= -128 src 127))
1640 (maybe-emit-rex-for-ea segment dst nil)
1641 (emit-byte segment #b10000011)
1642 (emit-ea segment dst opcode allow-constants)
1643 (emit-byte segment src))
1644 ((accumulator-p dst)
1645 (maybe-emit-rex-for-ea segment dst nil)
1652 (emit-sized-immediate segment size src))
1654 (maybe-emit-rex-for-ea segment dst nil)
1655 (emit-byte segment (if (eq size :byte) #b10000000 #b10000001))
1656 (emit-ea segment dst opcode allow-constants)
1657 (emit-sized-immediate segment size src))))
1659 (maybe-emit-rex-for-ea segment dst src)
1663 (if (eq size :byte) #b00000000 #b00000001)))
1664 (emit-ea segment dst (reg-tn-encoding src) allow-constants))
1666 (maybe-emit-rex-for-ea segment src dst)
1670 (if (eq size :byte) #b00000010 #b00000011)))
1671 (emit-ea segment src (reg-tn-encoding dst) allow-constants))
1673 (error "bogus operands to ~A" name)))))
1675 (eval-when (:compile-toplevel :execute)
1676 (defun arith-inst-printer-list (subop)
1677 `((accum-imm ((op ,(dpb subop (byte 3 2) #b0000010))))
1678 (rex-accum-imm ((op ,(dpb subop (byte 3 2) #b0000010))))
1679 (reg/mem-imm ((op (#b1000000 ,subop))))
1680 (rex-reg/mem-imm ((op (#b1000000 ,subop))))
1681 ;; The redundant encoding #x82 is invalid in 64-bit mode,
1682 ;; therefore we force WIDTH to 1.
1683 (reg/mem-imm ((op (#b1000001 ,subop)) (width 1)
1684 (imm nil :type signed-imm-byte)))
1685 (rex-reg/mem-imm ((op (#b1000001 ,subop))
1686 (imm nil :type signed-imm-byte)))
1687 (reg-reg/mem-dir ((op ,(dpb subop (byte 3 1) #b000000))))
1688 (rex-reg-reg/mem-dir ((op ,(dpb subop (byte 3 1) #b000000))))))
1691 (define-instruction add (segment dst src)
1692 (:printer-list (arith-inst-printer-list #b000))
1693 (:emitter (emit-random-arith-inst "ADD" segment dst src #b000)))
1695 (define-instruction adc (segment dst src)
1696 (:printer-list (arith-inst-printer-list #b010))
1697 (:emitter (emit-random-arith-inst "ADC" segment dst src #b010)))
1699 (define-instruction sub (segment dst src)
1700 (:printer-list (arith-inst-printer-list #b101))
1701 (:emitter (emit-random-arith-inst "SUB" segment dst src #b101)))
1703 (define-instruction sbb (segment dst src)
1704 (:printer-list (arith-inst-printer-list #b011))
1705 (:emitter (emit-random-arith-inst "SBB" segment dst src #b011)))
1707 (define-instruction cmp (segment dst src)
1708 (:printer-list (arith-inst-printer-list #b111))
1709 (:emitter (emit-random-arith-inst "CMP" segment dst src #b111 t)))
1711 (define-instruction inc (segment dst)
1713 (:printer modrm-reg-no-width ((modrm-reg #b000)))
1715 ;; (:printer rex-reg/mem ((op '(#b11111111 #b001))))
1716 (:printer reg/mem ((op '(#b1111111 #b000))))
1718 (let ((size (operand-size dst)))
1719 (maybe-emit-operand-size-prefix segment size)
1720 (cond #+nil ; these opcodes become REX prefixes in x86-64
1721 ((and (not (eq size :byte)) (register-p dst))
1722 (emit-byte-with-reg segment #b01000 (reg-tn-encoding dst)))
1724 (maybe-emit-rex-for-ea segment dst nil)
1725 (emit-byte segment (if (eq size :byte) #b11111110 #b11111111))
1726 (emit-ea segment dst #b000))))))
1728 (define-instruction dec (segment dst)
1730 (:printer modrm-reg-no-width ((modrm-reg #b001)))
1732 (:printer reg/mem ((op '(#b1111111 #b001))))
1734 (let ((size (operand-size dst)))
1735 (maybe-emit-operand-size-prefix segment size)
1737 ((and (not (eq size :byte)) (register-p dst))
1738 (emit-byte-with-reg segment #b01001 (reg-tn-encoding dst)))
1740 (maybe-emit-rex-for-ea segment dst nil)
1741 (emit-byte segment (if (eq size :byte) #b11111110 #b11111111))
1742 (emit-ea segment dst #b001))))))
1744 (define-instruction neg (segment dst)
1745 (:printer reg/mem ((op '(#b1111011 #b011))))
1747 (let ((size (operand-size dst)))
1748 (maybe-emit-operand-size-prefix segment size)
1749 (maybe-emit-rex-for-ea segment dst nil)
1750 (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
1751 (emit-ea segment dst #b011))))
1753 (define-instruction mul (segment dst src)
1754 (:printer accum-reg/mem ((op '(#b1111011 #b100))))
1756 (let ((size (matching-operand-size dst src)))
1757 (aver (accumulator-p dst))
1758 (maybe-emit-operand-size-prefix segment size)
1759 (maybe-emit-rex-for-ea segment src nil)
1760 (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
1761 (emit-ea segment src #b100))))
1763 (define-instruction imul (segment dst &optional src1 src2)
1764 (:printer accum-reg/mem ((op '(#b1111011 #b101))))
1765 (:printer ext-reg-reg/mem-no-width ((op #b10101111)))
1766 (:printer rex-ext-reg-reg/mem-no-width ((op #b10101111)))
1767 (:printer reg-reg/mem ((op #b0110100) (width 1)
1768 (imm nil :type 'signed-imm-data))
1769 '(:name :tab reg ", " reg/mem ", " imm))
1770 (:printer rex-reg-reg/mem ((op #b0110100) (width 1)
1771 (imm nil :type 'signed-imm-data))
1772 '(:name :tab reg ", " reg/mem ", " imm))
1773 (:printer reg-reg/mem ((op #b0110101) (width 1)
1774 (imm nil :type 'signed-imm-byte))
1775 '(:name :tab reg ", " reg/mem ", " imm))
1776 (:printer rex-reg-reg/mem ((op #b0110101) (width 1)
1777 (imm nil :type 'signed-imm-byte))
1778 '(:name :tab reg ", " reg/mem ", " imm))
1780 (flet ((r/m-with-immed-to-reg (reg r/m immed)
1781 (let* ((size (matching-operand-size reg r/m))
1782 (sx (and (not (eq size :byte)) (<= -128 immed 127))))
1783 (maybe-emit-operand-size-prefix segment size)
1784 (maybe-emit-rex-for-ea segment r/m reg)
1785 (emit-byte segment (if sx #b01101011 #b01101001))
1786 (emit-ea segment r/m (reg-tn-encoding reg))
1788 (emit-byte segment immed)
1789 (emit-sized-immediate segment size immed)))))
1791 (r/m-with-immed-to-reg dst src1 src2))
1794 (r/m-with-immed-to-reg dst dst src1)
1795 (let ((size (matching-operand-size dst src1)))
1796 (maybe-emit-operand-size-prefix segment size)
1797 (maybe-emit-rex-for-ea segment src1 dst)
1798 (emit-byte segment #b00001111)
1799 (emit-byte segment #b10101111)
1800 (emit-ea segment src1 (reg-tn-encoding dst)))))
1802 (let ((size (operand-size dst)))
1803 (maybe-emit-operand-size-prefix segment size)
1804 (maybe-emit-rex-for-ea segment dst nil)
1805 (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
1806 (emit-ea segment dst #b101)))))))
1808 (define-instruction div (segment dst src)
1809 (:printer accum-reg/mem ((op '(#b1111011 #b110))))
1811 (let ((size (matching-operand-size dst src)))
1812 (aver (accumulator-p dst))
1813 (maybe-emit-operand-size-prefix segment size)
1814 (maybe-emit-rex-for-ea segment src nil)
1815 (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
1816 (emit-ea segment src #b110))))
1818 (define-instruction idiv (segment dst src)
1819 (:printer accum-reg/mem ((op '(#b1111011 #b111))))
1821 (let ((size (matching-operand-size dst src)))
1822 (aver (accumulator-p dst))
1823 (maybe-emit-operand-size-prefix segment size)
1824 (maybe-emit-rex-for-ea segment src nil)
1825 (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
1826 (emit-ea segment src #b111))))
1828 (define-instruction bswap (segment dst)
1829 (:printer ext-reg-no-width ((op #b11001)))
1831 (let ((size (operand-size dst)))
1832 (maybe-emit-rex-prefix segment size nil nil dst)
1833 (emit-byte segment #x0f)
1834 (emit-byte-with-reg segment #b11001 (reg-tn-encoding dst)))))
1836 ;;; CBW -- Convert Byte to Word. AX <- sign_xtnd(AL)
1837 (define-instruction cbw (segment)
1839 (maybe-emit-operand-size-prefix segment :word)
1840 (emit-byte segment #b10011000)))
1842 ;;; CWDE -- Convert Word To Double Word Extened. EAX <- sign_xtnd(AX)
1843 (define-instruction cwde (segment)
1845 (maybe-emit-operand-size-prefix segment :dword)
1846 (emit-byte segment #b10011000)))
1848 ;;; CWD -- Convert Word to Double Word. DX:AX <- sign_xtnd(AX)
1849 (define-instruction cwd (segment)
1851 (maybe-emit-operand-size-prefix segment :word)
1852 (emit-byte segment #b10011001)))
1854 ;;; CDQ -- Convert Double Word to Quad Word. EDX:EAX <- sign_xtnd(EAX)
1855 (define-instruction cdq (segment)
1856 (:printer byte ((op #b10011001)))
1858 (maybe-emit-operand-size-prefix segment :dword)
1859 (emit-byte segment #b10011001)))
1861 ;;; CQO -- Convert Quad or Octaword. RDX:RAX <- sign_xtnd(RAX)
1862 (define-instruction cqo (segment)
1864 (maybe-emit-rex-prefix segment :qword nil nil nil)
1865 (emit-byte segment #b10011001)))
1867 (define-instruction xadd (segment dst src)
1868 ;; Register/Memory with Register.
1869 (:printer ext-reg-reg/mem ((op #b1100000)) '(:name :tab reg/mem ", " reg))
1871 (aver (register-p src))
1872 (let ((size (matching-operand-size src dst)))
1873 (maybe-emit-operand-size-prefix segment size)
1874 (maybe-emit-rex-for-ea segment dst src)
1875 (emit-byte segment #b00001111)
1876 (emit-byte segment (if (eq size :byte) #b11000000 #b11000001))
1877 (emit-ea segment dst (reg-tn-encoding src)))))
1882 (defun emit-shift-inst (segment dst amount opcode)
1883 (let ((size (operand-size dst)))
1884 (maybe-emit-operand-size-prefix segment size)
1885 (multiple-value-bind (major-opcode immed)
1887 (:cl (values #b11010010 nil))
1888 (1 (values #b11010000 nil))
1889 (t (values #b11000000 t)))
1890 (maybe-emit-rex-for-ea segment dst nil)
1892 (if (eq size :byte) major-opcode (logior major-opcode 1)))
1893 (emit-ea segment dst opcode)
1895 (emit-byte segment amount)))))
1897 (eval-when (:compile-toplevel :execute)
1898 (defun shift-inst-printer-list (subop)
1899 `((reg/mem ((op (#b1101000 ,subop)))
1900 (:name :tab reg/mem ", 1"))
1901 (rex-reg/mem ((op (#b1101000 ,subop)))
1902 (:name :tab reg/mem ", 1"))
1903 (reg/mem ((op (#b1101001 ,subop)))
1904 (:name :tab reg/mem ", " 'cl))
1905 (rex-reg/mem ((op (#b1101001 ,subop)))
1906 (:name :tab reg/mem ", " 'cl))
1907 (reg/mem-imm ((op (#b1100000 ,subop))
1908 (imm nil :type imm-byte)))
1909 (rex-reg/mem-imm ((op (#b1100000 ,subop))
1910 (imm nil :type imm-byte))))))
1912 (define-instruction rol (segment dst amount)
1914 (shift-inst-printer-list #b000))
1916 (emit-shift-inst segment dst amount #b000)))
1918 (define-instruction ror (segment dst amount)
1920 (shift-inst-printer-list #b001))
1922 (emit-shift-inst segment dst amount #b001)))
1924 (define-instruction rcl (segment dst amount)
1926 (shift-inst-printer-list #b010))
1928 (emit-shift-inst segment dst amount #b010)))
1930 (define-instruction rcr (segment dst amount)
1932 (shift-inst-printer-list #b011))
1934 (emit-shift-inst segment dst amount #b011)))
1936 (define-instruction shl (segment dst amount)
1938 (shift-inst-printer-list #b100))
1940 (emit-shift-inst segment dst amount #b100)))
1942 (define-instruction shr (segment dst amount)
1944 (shift-inst-printer-list #b101))
1946 (emit-shift-inst segment dst amount #b101)))
1948 (define-instruction sar (segment dst amount)
1950 (shift-inst-printer-list #b111))
1952 (emit-shift-inst segment dst amount #b111)))
1954 (defun emit-double-shift (segment opcode dst src amt)
1955 (let ((size (matching-operand-size dst src)))
1956 (when (eq size :byte)
1957 (error "Double shifts can only be used with words."))
1958 (maybe-emit-operand-size-prefix segment size)
1959 (maybe-emit-rex-for-ea segment dst src)
1960 (emit-byte segment #b00001111)
1961 (emit-byte segment (dpb opcode (byte 1 3)
1962 (if (eq amt :cl) #b10100101 #b10100100)))
1963 (emit-ea segment dst (reg-tn-encoding src))
1964 (unless (eq amt :cl)
1965 (emit-byte segment amt))))
1967 (eval-when (:compile-toplevel :execute)
1968 (defun double-shift-inst-printer-list (op)
1970 (ext-reg-reg/mem-imm ((op ,(logior op #b100))
1971 (imm nil :type signed-imm-byte)))
1972 (ext-reg-reg/mem ((op ,(logior op #b101)))
1973 (:name :tab reg/mem ", " 'cl)))))
1975 (define-instruction shld (segment dst src amt)
1976 (:declare (type (or (member :cl) (mod 32)) amt))
1977 (:printer-list (double-shift-inst-printer-list #b10100000))
1979 (emit-double-shift segment #b0 dst src amt)))
1981 (define-instruction shrd (segment dst src amt)
1982 (:declare (type (or (member :cl) (mod 32)) amt))
1983 (:printer-list (double-shift-inst-printer-list #b10101000))
1985 (emit-double-shift segment #b1 dst src amt)))
1987 (define-instruction and (segment dst src)
1989 (arith-inst-printer-list #b100))
1991 (emit-random-arith-inst "AND" segment dst src #b100)))
1993 (define-instruction test (segment this that)
1994 (:printer accum-imm ((op #b1010100)))
1995 (:printer rex-accum-imm ((op #b1010100)))
1996 (:printer reg/mem-imm ((op '(#b1111011 #b000))))
1997 (:printer rex-reg/mem-imm ((op '(#b1111011 #b000))))
1998 (:printer reg-reg/mem ((op #b1000010)))
1999 (:printer rex-reg-reg/mem ((op #b1000010)))
2001 (let ((size (matching-operand-size this that)))
2002 (maybe-emit-operand-size-prefix segment size)
2003 (flet ((test-immed-and-something (immed something)
2004 (cond ((accumulator-p something)
2005 (maybe-emit-rex-for-ea segment something nil)
2007 (if (eq size :byte) #b10101000 #b10101001))
2008 (emit-sized-immediate segment size immed))
2010 (maybe-emit-rex-for-ea segment something nil)
2012 (if (eq size :byte) #b11110110 #b11110111))
2013 (emit-ea segment something #b000)
2014 (emit-sized-immediate segment size immed))))
2015 (test-reg-and-something (reg something)
2016 (maybe-emit-rex-for-ea segment something reg)
2017 (emit-byte segment (if (eq size :byte) #b10000100 #b10000101))
2018 (emit-ea segment something (reg-tn-encoding reg))))
2019 (cond ((integerp that)
2020 (test-immed-and-something that this))
2022 (test-immed-and-something this that))
2024 (test-reg-and-something this that))
2026 (test-reg-and-something that this))
2028 (error "bogus operands for TEST: ~S and ~S" this that)))))))
2030 (define-instruction or (segment dst src)
2032 (arith-inst-printer-list #b001))
2034 (emit-random-arith-inst "OR" segment dst src #b001)))
2036 (define-instruction xor (segment dst src)
2038 (arith-inst-printer-list #b110))
2040 (emit-random-arith-inst "XOR" segment dst src #b110)))
2042 (define-instruction not (segment dst)
2043 (:printer reg/mem ((op '(#b1111011 #b010))))
2045 (let ((size (operand-size dst)))
2046 (maybe-emit-operand-size-prefix segment size)
2047 (maybe-emit-rex-for-ea segment dst nil)
2048 (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
2049 (emit-ea segment dst #b010))))
2051 ;;;; string manipulation
2053 (define-instruction cmps (segment size)
2054 (:printer string-op ((op #b1010011)))
2055 (:printer rex-string-op ((op #b1010011)))
2057 (maybe-emit-operand-size-prefix segment size)
2058 (maybe-emit-rex-prefix segment size nil nil nil)
2059 (emit-byte segment (if (eq size :byte) #b10100110 #b10100111))))
2061 (define-instruction ins (segment acc)
2062 (:printer string-op ((op #b0110110)))
2063 (:printer rex-string-op ((op #b0110110)))
2065 (let ((size (operand-size acc)))
2066 (aver (accumulator-p acc))
2067 (maybe-emit-operand-size-prefix segment size)
2068 (maybe-emit-rex-prefix segment size nil nil nil)
2069 (emit-byte segment (if (eq size :byte) #b01101100 #b01101101)))))
2071 (define-instruction lods (segment acc)
2072 (:printer string-op ((op #b1010110)))
2073 (:printer rex-string-op ((op #b1010110)))
2075 (let ((size (operand-size acc)))
2076 (aver (accumulator-p acc))
2077 (maybe-emit-operand-size-prefix segment size)
2078 (maybe-emit-rex-prefix segment size nil nil nil)
2079 (emit-byte segment (if (eq size :byte) #b10101100 #b10101101)))))
2081 (define-instruction movs (segment size)
2082 (:printer string-op ((op #b1010010)))
2083 (:printer rex-string-op ((op #b1010010)))
2085 (maybe-emit-operand-size-prefix segment size)
2086 (maybe-emit-rex-prefix segment size nil nil nil)
2087 (emit-byte segment (if (eq size :byte) #b10100100 #b10100101))))
2089 (define-instruction outs (segment acc)
2090 (:printer string-op ((op #b0110111)))
2091 (:printer rex-string-op ((op #b0110111)))
2093 (let ((size (operand-size acc)))
2094 (aver (accumulator-p acc))
2095 (maybe-emit-operand-size-prefix segment size)
2096 (maybe-emit-rex-prefix segment size nil nil nil)
2097 (emit-byte segment (if (eq size :byte) #b01101110 #b01101111)))))
2099 (define-instruction scas (segment acc)
2100 (:printer string-op ((op #b1010111)))
2101 (:printer rex-string-op ((op #b1010111)))
2103 (let ((size (operand-size acc)))
2104 (aver (accumulator-p acc))
2105 (maybe-emit-operand-size-prefix segment size)
2106 (maybe-emit-rex-prefix segment size nil nil nil)
2107 (emit-byte segment (if (eq size :byte) #b10101110 #b10101111)))))
2109 (define-instruction stos (segment acc)
2110 (:printer string-op ((op #b1010101)))
2111 (:printer rex-string-op ((op #b1010101)))
2113 (let ((size (operand-size acc)))
2114 (aver (accumulator-p acc))
2115 (maybe-emit-operand-size-prefix segment size)
2116 (maybe-emit-rex-prefix segment size nil nil nil)
2117 (emit-byte segment (if (eq size :byte) #b10101010 #b10101011)))))
2119 (define-instruction xlat (segment)
2120 (:printer byte ((op #b11010111)))
2122 (emit-byte segment #b11010111)))
2124 (define-instruction rep (segment)
2126 (emit-byte segment #b11110010)))
2128 (define-instruction repe (segment)
2129 (:printer byte ((op #b11110011)))
2131 (emit-byte segment #b11110011)))
2133 (define-instruction repne (segment)
2134 (:printer byte ((op #b11110010)))
2136 (emit-byte segment #b11110010)))
2139 ;;;; bit manipulation
2141 (define-instruction bsf (segment dst src)
2142 (:printer ext-reg-reg/mem ((op #b1011110) (width 0)))
2144 (let ((size (matching-operand-size dst src)))
2145 (when (eq size :byte)
2146 (error "can't scan bytes: ~S" src))
2147 (maybe-emit-operand-size-prefix segment size)
2148 (maybe-emit-rex-for-ea segment src dst)
2149 (emit-byte segment #b00001111)
2150 (emit-byte segment #b10111100)
2151 (emit-ea segment src (reg-tn-encoding dst)))))
2153 (define-instruction bsr (segment dst src)
2154 (:printer ext-reg-reg/mem ((op #b1011110) (width 1)))
2156 (let ((size (matching-operand-size dst src)))
2157 (when (eq size :byte)
2158 (error "can't scan bytes: ~S" src))
2159 (maybe-emit-operand-size-prefix segment size)
2160 (maybe-emit-rex-for-ea segment src dst)
2161 (emit-byte segment #b00001111)
2162 (emit-byte segment #b10111101)
2163 (emit-ea segment src (reg-tn-encoding dst)))))
2165 (defun emit-bit-test-and-mumble (segment src index opcode)
2166 (let ((size (operand-size src)))
2167 (when (eq size :byte)
2168 (error "can't scan bytes: ~S" src))
2169 (maybe-emit-operand-size-prefix segment size)
2170 (cond ((integerp index)
2171 (maybe-emit-rex-for-ea segment src nil)
2172 (emit-byte segment #b00001111)
2173 (emit-byte segment #b10111010)
2174 (emit-ea segment src opcode)
2175 (emit-byte segment index))
2177 (maybe-emit-rex-for-ea segment src index)
2178 (emit-byte segment #b00001111)
2179 (emit-byte segment (dpb opcode (byte 3 3) #b10000011))
2180 (emit-ea segment src (reg-tn-encoding index))))))
2182 (eval-when (:compile-toplevel :execute)
2183 (defun bit-test-inst-printer-list (subop)
2184 `((ext-reg/mem-imm ((op (#b1011101 ,subop))
2185 (reg/mem nil :type reg/mem)
2186 (imm nil :type imm-byte)
2188 (ext-reg-reg/mem ((op ,(dpb subop (byte 3 2) #b1000001))
2190 (:name :tab reg/mem ", " reg)))))
2192 (define-instruction bt (segment src index)
2193 (:printer-list (bit-test-inst-printer-list #b100))
2195 (emit-bit-test-and-mumble segment src index #b100)))
2197 (define-instruction btc (segment src index)
2198 (:printer-list (bit-test-inst-printer-list #b111))
2200 (emit-bit-test-and-mumble segment src index #b111)))
2202 (define-instruction btr (segment src index)
2203 (:printer-list (bit-test-inst-printer-list #b110))
2205 (emit-bit-test-and-mumble segment src index #b110)))
2207 (define-instruction bts (segment src index)
2208 (:printer-list (bit-test-inst-printer-list #b101))
2210 (emit-bit-test-and-mumble segment src index #b101)))
2213 ;;;; control transfer
2215 (define-instruction call (segment where)
2216 (:printer near-jump ((op #b11101000)))
2217 (:printer reg/mem-default-qword ((op '(#b11111111 #b010))))
2218 (:printer rex-reg/mem-default-qword ((op '(#b11111111 #b010))))
2222 (maybe-emit-rex-for-ea segment where nil)
2223 (emit-byte segment #b11101000) ; 32 bit relative
2224 (emit-back-patch segment
2226 (lambda (segment posn)
2228 (- (label-position where)
2231 (maybe-emit-rex-for-ea segment where nil)
2232 (emit-byte segment #b11101000)
2233 (emit-relative-fixup segment where))
2235 (maybe-emit-rex-for-ea segment where nil)
2236 (emit-byte segment #b11111111)
2237 (emit-ea segment where #b010)))))
2239 (defun emit-byte-displacement-backpatch (segment target)
2240 (emit-back-patch segment
2242 (lambda (segment posn)
2243 (let ((disp (- (label-position target) (1+ posn))))
2244 (aver (<= -128 disp 127))
2245 (emit-byte segment disp)))))
2247 (define-instruction jmp (segment cond &optional where)
2248 ;; conditional jumps
2249 (:printer short-cond-jump ((op #b0111)) '('j cc :tab label))
2250 (:printer near-cond-jump () '('j cc :tab label))
2251 ;; unconditional jumps
2252 (:printer short-jump ((op #b1011)))
2253 (:printer near-jump ((op #b11101001)) )
2254 (:printer reg/mem-default-qword ((op '(#b11111111 #b100))))
2255 (:printer rex-reg/mem-default-qword ((op '(#b11111111 #b100))))
2260 (lambda (segment posn delta-if-after)
2261 (let ((disp (- (label-position where posn delta-if-after)
2263 (when (<= -128 disp 127)
2265 (dpb (conditional-opcode cond)
2268 (emit-byte-displacement-backpatch segment where)
2270 (lambda (segment posn)
2271 (let ((disp (- (label-position where) (+ posn 6))))
2272 (emit-byte segment #b00001111)
2274 (dpb (conditional-opcode cond)
2277 (emit-dword segment disp)))))
2278 ((label-p (setq where cond))
2281 (lambda (segment posn delta-if-after)
2282 (let ((disp (- (label-position where posn delta-if-after)
2284 (when (<= -128 disp 127)
2285 (emit-byte segment #b11101011)
2286 (emit-byte-displacement-backpatch segment where)
2288 (lambda (segment posn)
2289 (let ((disp (- (label-position where) (+ posn 5))))
2290 (emit-byte segment #b11101001)
2291 (emit-dword segment disp)))))
2293 (emit-byte segment #b11101001)
2294 (emit-relative-fixup segment where))
2296 (unless (or (ea-p where) (tn-p where))
2297 (error "don't know what to do with ~A" where))
2298 ;; near jump defaults to 64 bit
2299 ;; w-bit in rex prefix is unnecessary
2300 (maybe-emit-rex-for-ea segment where nil :operand-size :dword)
2301 (emit-byte segment #b11111111)
2302 (emit-ea segment where #b100)))))
2304 (define-instruction jmp-short (segment label)
2306 (emit-byte segment #b11101011)
2307 (emit-byte-displacement-backpatch segment label)))
2309 (define-instruction ret (segment &optional stack-delta)
2310 (:printer byte ((op #b11000011)))
2311 (:printer byte ((op #b11000010) (imm nil :type 'imm-word-16))
2315 (emit-byte segment #b11000010)
2316 (emit-word segment stack-delta))
2318 (emit-byte segment #b11000011)))))
2320 (define-instruction jecxz (segment target)
2321 (:printer short-jump ((op #b0011)))
2323 (emit-byte segment #b11100011)
2324 (emit-byte-displacement-backpatch segment target)))
2326 (define-instruction loop (segment target)
2327 (:printer short-jump ((op #b0010)))
2329 (emit-byte segment #b11100010) ; pfw this was 11100011, or jecxz!!!!
2330 (emit-byte-displacement-backpatch segment target)))
2332 (define-instruction loopz (segment target)
2333 (:printer short-jump ((op #b0001)))
2335 (emit-byte segment #b11100001)
2336 (emit-byte-displacement-backpatch segment target)))
2338 (define-instruction loopnz (segment target)
2339 (:printer short-jump ((op #b0000)))
2341 (emit-byte segment #b11100000)
2342 (emit-byte-displacement-backpatch segment target)))
2344 ;;;; conditional move
2345 (define-instruction cmov (segment cond dst src)
2346 (:printer cond-move ())
2348 (aver (register-p dst))
2349 (let ((size (matching-operand-size dst src)))
2350 (aver (or (eq size :word) (eq size :dword) (eq size :qword) ))
2351 (maybe-emit-operand-size-prefix segment size))
2352 (maybe-emit-rex-for-ea segment src dst)
2353 (emit-byte segment #b00001111)
2354 (emit-byte segment (dpb (conditional-opcode cond) (byte 4 0) #b01000000))
2355 (emit-ea segment src (reg-tn-encoding dst))))
2357 ;;;; conditional byte set
2359 (define-instruction set (segment dst cond)
2360 (:printer cond-set ())
2362 (maybe-emit-rex-for-ea segment dst nil)
2363 (emit-byte segment #b00001111)
2364 (emit-byte segment (dpb (conditional-opcode cond) (byte 4 0) #b10010000))
2365 (emit-ea segment dst #b000)))
2369 (define-instruction enter (segment disp &optional (level 0))
2370 (:declare (type (unsigned-byte 16) disp)
2371 (type (unsigned-byte 8) level))
2372 (:printer enter-format ((op #b11001000)))
2374 (emit-byte segment #b11001000)
2375 (emit-word segment disp)
2376 (emit-byte segment level)))
2378 (define-instruction leave (segment)
2379 (:printer byte ((op #b11001001)))
2381 (emit-byte segment #b11001001)))
2383 ;;;; interrupt instructions
2385 (defun snarf-error-junk (sap offset &optional length-only)
2386 (let* ((length (sb!sys:sap-ref-8 sap offset))
2387 (vector (make-array length :element-type '(unsigned-byte 8))))
2388 (declare (type sb!sys:system-area-pointer sap)
2389 (type (unsigned-byte 8) length)
2390 (type (simple-array (unsigned-byte 8) (*)) vector))
2392 (values 0 (1+ length) nil nil))
2394 (sb!kernel:copy-ub8-from-system-area sap (1+ offset)
2396 (collect ((sc-offsets)
2398 (lengths 1) ; the length byte
2400 (error-number (sb!c:read-var-integer vector index)))
2403 (when (>= index length)
2405 (let ((old-index index))
2406 (sc-offsets (sb!c:read-var-integer vector index))
2407 (lengths (- index old-index))))
2408 (values error-number
2414 (defmacro break-cases (breaknum &body cases)
2415 (let ((bn-temp (gensym)))
2416 (collect ((clauses))
2417 (dolist (case cases)
2418 (clauses `((= ,bn-temp ,(car case)) ,@(cdr case))))
2419 `(let ((,bn-temp ,breaknum))
2420 (cond ,@(clauses))))))
2423 (defun break-control (chunk inst stream dstate)
2424 (declare (ignore inst))
2425 (flet ((nt (x) (if stream (sb!disassem:note x dstate))))
2426 ;; FIXME: Make sure that BYTE-IMM-CODE is defined. The genesis
2427 ;; map has it undefined; and it should be easier to look in the target
2428 ;; Lisp (with (DESCRIBE 'BYTE-IMM-CODE)) than to definitively deduce
2429 ;; from first principles whether it's defined in some way that genesis
2431 (case (byte-imm-code chunk dstate)
2434 (sb!disassem:handle-break-args #'snarf-error-junk stream dstate))
2437 (sb!disassem:handle-break-args #'snarf-error-junk stream dstate))
2439 (nt "breakpoint trap"))
2440 (#.pending-interrupt-trap
2441 (nt "pending interrupt trap"))
2444 (#.fun-end-breakpoint-trap
2445 (nt "function end breakpoint trap")))))
2447 (define-instruction break (segment code)
2448 (:declare (type (unsigned-byte 8) code))
2449 (:printer byte-imm ((op #b11001100)) '(:name :tab code)
2450 :control #'break-control)
2452 (emit-byte segment #b11001100)
2453 (emit-byte segment code)))
2455 (define-instruction int (segment number)
2456 (:declare (type (unsigned-byte 8) number))
2457 (:printer byte-imm ((op #b11001101)))
2461 (emit-byte segment #b11001100))
2463 (emit-byte segment #b11001101)
2464 (emit-byte segment number)))))
2466 (define-instruction into (segment)
2467 (:printer byte ((op #b11001110)))
2469 (emit-byte segment #b11001110)))
2471 (define-instruction bound (segment reg bounds)
2473 (let ((size (matching-operand-size reg bounds)))
2474 (when (eq size :byte)
2475 (error "can't bounds-test bytes: ~S" reg))
2476 (maybe-emit-operand-size-prefix segment size)
2477 (maybe-emit-rex-for-ea segment bounds reg)
2478 (emit-byte segment #b01100010)
2479 (emit-ea segment bounds (reg-tn-encoding reg)))))
2481 (define-instruction iret (segment)
2482 (:printer byte ((op #b11001111)))
2484 (emit-byte segment #b11001111)))
2486 ;;;; processor control
2488 (define-instruction hlt (segment)
2489 (:printer byte ((op #b11110100)))
2491 (emit-byte segment #b11110100)))
2493 (define-instruction nop (segment)
2494 (:printer byte ((op #b10010000)))
2496 (emit-byte segment #b10010000)))
2498 (define-instruction wait (segment)
2499 (:printer byte ((op #b10011011)))
2501 (emit-byte segment #b10011011)))
2503 (define-instruction lock (segment)
2504 (:printer byte ((op #b11110000)))
2506 (emit-byte segment #b11110000)))
2508 ;;;; miscellaneous hackery
2510 (define-instruction byte (segment byte)
2512 (emit-byte segment byte)))
2514 (define-instruction word (segment word)
2516 (emit-word segment word)))
2518 (define-instruction dword (segment dword)
2520 (emit-dword segment dword)))
2522 (defun emit-header-data (segment type)
2523 (emit-back-patch segment
2525 (lambda (segment posn)
2529 (component-header-length))
2533 (define-instruction simple-fun-header-word (segment)
2535 (emit-header-data segment simple-fun-header-widetag)))
2537 (define-instruction lra-header-word (segment)
2539 (emit-header-data segment return-pc-header-widetag)))
2541 ;;;; fp instructions
2543 ;;;; Note: We treat the single-precision and double-precision variants
2544 ;;;; as separate instructions.
2546 ;;; Load single to st(0).
2547 (define-instruction fld (segment source)
2548 (:printer floating-point ((op '(#b001 #b000))))
2550 (and (not (fp-reg-tn-p source))
2551 (maybe-emit-rex-for-ea segment source nil))
2552 (emit-byte segment #b11011001)
2553 (emit-fp-op segment source #b000)))
2555 ;;; Load double to st(0).
2556 (define-instruction fldd (segment source)
2557 (:printer floating-point ((op '(#b101 #b000))))
2558 (:printer floating-point-fp ((op '(#b001 #b000))))
2560 (if (fp-reg-tn-p source)
2561 (emit-byte segment #b11011001)
2563 (maybe-emit-rex-for-ea segment source nil)
2564 (emit-byte segment #b11011101)))
2565 (emit-fp-op segment source #b000)))
2567 ;;; Load long to st(0).
2568 (define-instruction fldl (segment source)
2569 (:printer floating-point ((op '(#b011 #b101))))
2571 (and (not (fp-reg-tn-p source))
2572 (maybe-emit-rex-for-ea segment source nil))
2573 (emit-byte segment #b11011011)
2574 (emit-fp-op segment source #b101)))
2576 ;;; Store single from st(0).
2577 (define-instruction fst (segment dest)
2578 (:printer floating-point ((op '(#b001 #b010))))
2580 (cond ((fp-reg-tn-p dest)
2581 (emit-byte segment #b11011101)
2582 (emit-fp-op segment dest #b010))
2584 (maybe-emit-rex-for-ea segment dest nil)
2585 (emit-byte segment #b11011001)
2586 (emit-fp-op segment dest #b010)))))
2588 ;;; Store double from st(0).
2589 (define-instruction fstd (segment dest)
2590 (:printer floating-point ((op '(#b101 #b010))))
2591 (:printer floating-point-fp ((op '(#b101 #b010))))
2593 (cond ((fp-reg-tn-p dest)
2594 (emit-byte segment #b11011101)
2595 (emit-fp-op segment dest #b010))
2597 (maybe-emit-rex-for-ea segment dest nil)
2598 (emit-byte segment #b11011101)
2599 (emit-fp-op segment dest #b010)))))
2601 ;;; Arithmetic ops are all done with at least one operand at top of
2602 ;;; stack. The other operand is is another register or a 32/64 bit
2605 ;;; dtc: I've tried to follow the Intel ASM386 conventions, but note
2606 ;;; that these conflict with the Gdb conventions for binops. To reduce
2607 ;;; the confusion I've added comments showing the mathamatical
2608 ;;; operation and the two syntaxes. By the ASM386 convention the
2609 ;;; instruction syntax is:
2612 ;;; or Fop Destination, Source
2614 ;;; If only one operand is given then it is the source and the
2615 ;;; destination is ST(0). There are reversed forms of the fsub and
2616 ;;; fdiv instructions inducated by an 'R' suffix.
2618 ;;; The mathematical operation for the non-reverse form is always:
2619 ;;; destination = destination op source
2621 ;;; For the reversed form it is:
2622 ;;; destination = source op destination
2624 ;;; The instructions below only accept one operand at present which is
2625 ;;; usually the source. I've hack in extra instructions to implement
2626 ;;; the fops with a ST(i) destination, these have a -sti suffix and
2627 ;;; the operand is the destination with the source being ST(0).
2630 ;;; st(0) = st(0) + memory or st(i).
2631 (define-instruction fadd (segment source)
2632 (:printer floating-point ((op '(#b000 #b000))))
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 #b000)))
2640 ;;; st(0) = st(0) + memory or st(i).
2641 (define-instruction faddd (segment source)
2642 (:printer floating-point ((op '(#b100 #b000))))
2643 (:printer floating-point-fp ((op '(#b000 #b000))))
2645 (and (not (fp-reg-tn-p source))
2646 (maybe-emit-rex-for-ea segment source nil))
2647 (if (fp-reg-tn-p source)
2648 (emit-byte segment #b11011000)
2649 (emit-byte segment #b11011100))
2650 (emit-fp-op segment source #b000)))
2652 ;;; Add double destination st(i):
2653 ;;; st(i) = st(0) + st(i).
2654 (define-instruction fadd-sti (segment destination)
2655 (:printer floating-point-fp ((op '(#b100 #b000))))
2657 (aver (fp-reg-tn-p destination))
2658 (emit-byte segment #b11011100)
2659 (emit-fp-op segment destination #b000)))
2661 (define-instruction faddp-sti (segment destination)
2662 (:printer floating-point-fp ((op '(#b110 #b000))))
2664 (aver (fp-reg-tn-p destination))
2665 (emit-byte segment #b11011110)
2666 (emit-fp-op segment destination #b000)))
2668 ;;; Subtract single:
2669 ;;; st(0) = st(0) - memory or st(i).
2670 (define-instruction fsub (segment source)
2671 (:printer floating-point ((op '(#b000 #b100))))
2673 (and (not (fp-reg-tn-p source))
2674 (maybe-emit-rex-for-ea segment source nil))
2675 (emit-byte segment #b11011000)
2676 (emit-fp-op segment source #b100)))
2678 ;;; Subtract single, reverse:
2679 ;;; st(0) = memory or st(i) - st(0).
2680 (define-instruction fsubr (segment source)
2681 (:printer floating-point ((op '(#b000 #b101))))
2683 (and (not (fp-reg-tn-p source))
2684 (maybe-emit-rex-for-ea segment source nil))
2685 (emit-byte segment #b11011000)
2686 (emit-fp-op segment source #b101)))
2688 ;;; Subtract double:
2689 ;;; st(0) = st(0) - memory or st(i).
2690 (define-instruction fsubd (segment source)
2691 (:printer floating-point ((op '(#b100 #b100))))
2692 (:printer floating-point-fp ((op '(#b000 #b100))))
2694 (if (fp-reg-tn-p source)
2695 (emit-byte segment #b11011000)
2697 (and (not (fp-reg-tn-p source))
2698 (maybe-emit-rex-for-ea segment source nil))
2699 (emit-byte segment #b11011100)))
2700 (emit-fp-op segment source #b100)))
2702 ;;; Subtract double, reverse:
2703 ;;; st(0) = memory or st(i) - st(0).
2704 (define-instruction fsubrd (segment source)
2705 (:printer floating-point ((op '(#b100 #b101))))
2706 (:printer floating-point-fp ((op '(#b000 #b101))))
2708 (if (fp-reg-tn-p source)
2709 (emit-byte segment #b11011000)
2711 (and (not (fp-reg-tn-p source))
2712 (maybe-emit-rex-for-ea segment source nil))
2713 (emit-byte segment #b11011100)))
2714 (emit-fp-op segment source #b101)))
2716 ;;; Subtract double, destination st(i):
2717 ;;; st(i) = st(i) - st(0).
2719 ;;; ASM386 syntax: FSUB ST(i), ST
2720 ;;; Gdb syntax: fsubr %st,%st(i)
2721 (define-instruction fsub-sti (segment destination)
2722 (:printer floating-point-fp ((op '(#b100 #b101))))
2724 (aver (fp-reg-tn-p destination))
2725 (emit-byte segment #b11011100)
2726 (emit-fp-op segment destination #b101)))
2728 (define-instruction fsubp-sti (segment destination)
2729 (:printer floating-point-fp ((op '(#b110 #b101))))
2731 (aver (fp-reg-tn-p destination))
2732 (emit-byte segment #b11011110)
2733 (emit-fp-op segment destination #b101)))
2735 ;;; Subtract double, reverse, destination st(i):
2736 ;;; st(i) = st(0) - st(i).
2738 ;;; ASM386 syntax: FSUBR ST(i), ST
2739 ;;; Gdb syntax: fsub %st,%st(i)
2740 (define-instruction fsubr-sti (segment destination)
2741 (:printer floating-point-fp ((op '(#b100 #b100))))
2743 (aver (fp-reg-tn-p destination))
2744 (emit-byte segment #b11011100)
2745 (emit-fp-op segment destination #b100)))
2747 (define-instruction fsubrp-sti (segment destination)
2748 (:printer floating-point-fp ((op '(#b110 #b100))))
2750 (aver (fp-reg-tn-p destination))
2751 (emit-byte segment #b11011110)
2752 (emit-fp-op segment destination #b100)))
2754 ;;; Multiply single:
2755 ;;; st(0) = st(0) * memory or st(i).
2756 (define-instruction fmul (segment source)
2757 (:printer floating-point ((op '(#b000 #b001))))
2759 (and (not (fp-reg-tn-p source))
2760 (maybe-emit-rex-for-ea segment source nil))
2761 (emit-byte segment #b11011000)
2762 (emit-fp-op segment source #b001)))
2764 ;;; Multiply double:
2765 ;;; st(0) = st(0) * memory or st(i).
2766 (define-instruction fmuld (segment source)
2767 (:printer floating-point ((op '(#b100 #b001))))
2768 (:printer floating-point-fp ((op '(#b000 #b001))))
2770 (if (fp-reg-tn-p source)
2771 (emit-byte segment #b11011000)
2773 (and (not (fp-reg-tn-p source))
2774 (maybe-emit-rex-for-ea segment source nil))
2775 (emit-byte segment #b11011100)))
2776 (emit-fp-op segment source #b001)))
2778 ;;; Multiply double, destination st(i):
2779 ;;; st(i) = st(i) * st(0).
2780 (define-instruction fmul-sti (segment destination)
2781 (:printer floating-point-fp ((op '(#b100 #b001))))
2783 (aver (fp-reg-tn-p destination))
2784 (emit-byte segment #b11011100)
2785 (emit-fp-op segment destination #b001)))
2788 ;;; st(0) = st(0) / memory or st(i).
2789 (define-instruction fdiv (segment source)
2790 (:printer floating-point ((op '(#b000 #b110))))
2792 (and (not (fp-reg-tn-p source))
2793 (maybe-emit-rex-for-ea segment source nil))
2794 (emit-byte segment #b11011000)
2795 (emit-fp-op segment source #b110)))
2797 ;;; Divide single, reverse:
2798 ;;; st(0) = memory or st(i) / st(0).
2799 (define-instruction fdivr (segment source)
2800 (:printer floating-point ((op '(#b000 #b111))))
2802 (and (not (fp-reg-tn-p source))
2803 (maybe-emit-rex-for-ea segment source nil))
2804 (emit-byte segment #b11011000)
2805 (emit-fp-op segment source #b111)))
2808 ;;; st(0) = st(0) / memory or st(i).
2809 (define-instruction fdivd (segment source)
2810 (:printer floating-point ((op '(#b100 #b110))))
2811 (:printer floating-point-fp ((op '(#b000 #b110))))
2813 (if (fp-reg-tn-p source)
2814 (emit-byte segment #b11011000)
2816 (and (not (fp-reg-tn-p source))
2817 (maybe-emit-rex-for-ea segment source nil))
2818 (emit-byte segment #b11011100)))
2819 (emit-fp-op segment source #b110)))
2821 ;;; Divide double, reverse:
2822 ;;; st(0) = memory or st(i) / st(0).
2823 (define-instruction fdivrd (segment source)
2824 (:printer floating-point ((op '(#b100 #b111))))
2825 (:printer floating-point-fp ((op '(#b000 #b111))))
2827 (if (fp-reg-tn-p source)
2828 (emit-byte segment #b11011000)
2830 (and (not (fp-reg-tn-p source))
2831 (maybe-emit-rex-for-ea segment source nil))
2832 (emit-byte segment #b11011100)))
2833 (emit-fp-op segment source #b111)))
2835 ;;; Divide double, destination st(i):
2836 ;;; st(i) = st(i) / st(0).
2838 ;;; ASM386 syntax: FDIV ST(i), ST
2839 ;;; Gdb syntax: fdivr %st,%st(i)
2840 (define-instruction fdiv-sti (segment destination)
2841 (:printer floating-point-fp ((op '(#b100 #b111))))
2843 (aver (fp-reg-tn-p destination))
2844 (emit-byte segment #b11011100)
2845 (emit-fp-op segment destination #b111)))
2847 ;;; Divide double, reverse, destination st(i):
2848 ;;; st(i) = st(0) / st(i).
2850 ;;; ASM386 syntax: FDIVR ST(i), ST
2851 ;;; Gdb syntax: fdiv %st,%st(i)
2852 (define-instruction fdivr-sti (segment destination)
2853 (:printer floating-point-fp ((op '(#b100 #b110))))
2855 (aver (fp-reg-tn-p destination))
2856 (emit-byte segment #b11011100)
2857 (emit-fp-op segment destination #b110)))
2859 ;;; Exchange fr0 with fr(n). (There is no double precision variant.)
2860 (define-instruction fxch (segment source)
2861 (:printer floating-point-fp ((op '(#b001 #b001))))
2863 (unless (and (tn-p source)
2864 (eq (sb-name (sc-sb (tn-sc source))) 'float-registers))
2866 (emit-byte segment #b11011001)
2867 (emit-fp-op segment source #b001)))
2869 ;;; Push 32-bit integer to st0.
2870 (define-instruction fild (segment source)
2871 (:printer floating-point ((op '(#b011 #b000))))
2873 (and (not (fp-reg-tn-p source))
2874 (maybe-emit-rex-for-ea segment source nil))
2875 (emit-byte segment #b11011011)
2876 (emit-fp-op segment source #b000)))
2878 ;;; Push 64-bit integer to st0.
2879 (define-instruction fildl (segment source)
2880 (:printer floating-point ((op '(#b111 #b101))))
2882 (and (not (fp-reg-tn-p source))
2883 (maybe-emit-rex-for-ea segment source nil))
2884 (emit-byte segment #b11011111)
2885 (emit-fp-op segment source #b101)))
2887 ;;; Store 32-bit integer.
2888 (define-instruction fist (segment dest)
2889 (:printer floating-point ((op '(#b011 #b010))))
2891 (and (not (fp-reg-tn-p dest))
2892 (maybe-emit-rex-for-ea segment dest nil))
2893 (emit-byte segment #b11011011)
2894 (emit-fp-op segment dest #b010)))
2896 ;;; Store and pop 32-bit integer.
2897 (define-instruction fistp (segment dest)
2898 (:printer floating-point ((op '(#b011 #b011))))
2900 (and (not (fp-reg-tn-p dest))
2901 (maybe-emit-rex-for-ea segment dest nil))
2902 (emit-byte segment #b11011011)
2903 (emit-fp-op segment dest #b011)))
2905 ;;; Store and pop 64-bit integer.
2906 (define-instruction fistpl (segment dest)
2907 (:printer floating-point ((op '(#b111 #b111))))
2909 (and (not (fp-reg-tn-p dest))
2910 (maybe-emit-rex-for-ea segment dest nil))
2911 (emit-byte segment #b11011111)
2912 (emit-fp-op segment dest #b111)))
2914 ;;; Store single from st(0) and pop.
2915 (define-instruction fstp (segment dest)
2916 (:printer floating-point ((op '(#b001 #b011))))
2918 (cond ((fp-reg-tn-p dest)
2919 (emit-byte segment #b11011101)
2920 (emit-fp-op segment dest #b011))
2922 (maybe-emit-rex-for-ea segment dest nil)
2923 (emit-byte segment #b11011001)
2924 (emit-fp-op segment dest #b011)))))
2926 ;;; Store double from st(0) and pop.
2927 (define-instruction fstpd (segment dest)
2928 (:printer floating-point ((op '(#b101 #b011))))
2929 (:printer floating-point-fp ((op '(#b101 #b011))))
2931 (cond ((fp-reg-tn-p dest)
2932 (emit-byte segment #b11011101)
2933 (emit-fp-op segment dest #b011))
2935 (maybe-emit-rex-for-ea segment dest nil)
2936 (emit-byte segment #b11011101)
2937 (emit-fp-op segment dest #b011)))))
2939 ;;; Store long from st(0) and pop.
2940 (define-instruction fstpl (segment dest)
2941 (:printer floating-point ((op '(#b011 #b111))))
2943 (and (not (fp-reg-tn-p dest))
2944 (maybe-emit-rex-for-ea segment dest nil))
2945 (emit-byte segment #b11011011)
2946 (emit-fp-op segment dest #b111)))
2948 ;;; Decrement stack-top pointer.
2949 (define-instruction fdecstp (segment)
2950 (:printer floating-point-no ((op #b10110)))
2952 (emit-byte segment #b11011001)
2953 (emit-byte segment #b11110110)))
2955 ;;; Increment stack-top pointer.
2956 (define-instruction fincstp (segment)
2957 (:printer floating-point-no ((op #b10111)))
2959 (emit-byte segment #b11011001)
2960 (emit-byte segment #b11110111)))
2962 ;;; Free fp register.
2963 (define-instruction ffree (segment dest)
2964 (:printer floating-point-fp ((op '(#b101 #b000))))
2966 (and (not (fp-reg-tn-p dest))
2967 (maybe-emit-rex-for-ea segment dest nil))
2968 (emit-byte segment #b11011101)
2969 (emit-fp-op segment dest #b000)))
2971 (define-instruction fabs (segment)
2972 (:printer floating-point-no ((op #b00001)))
2974 (emit-byte segment #b11011001)
2975 (emit-byte segment #b11100001)))
2977 (define-instruction fchs (segment)
2978 (:printer floating-point-no ((op #b00000)))
2980 (emit-byte segment #b11011001)
2981 (emit-byte segment #b11100000)))
2983 (define-instruction frndint(segment)
2984 (:printer floating-point-no ((op #b11100)))
2986 (emit-byte segment #b11011001)
2987 (emit-byte segment #b11111100)))
2990 (define-instruction fninit(segment)
2991 (:printer floating-point-5 ((op #b00011)))
2993 (emit-byte segment #b11011011)
2994 (emit-byte segment #b11100011)))
2996 ;;; Store Status Word to AX.
2997 (define-instruction fnstsw(segment)
2998 (:printer floating-point-st ((op #b00000)))
3000 (emit-byte segment #b11011111)
3001 (emit-byte segment #b11100000)))
3003 ;;; Load Control Word.
3005 ;;; src must be a memory location
3006 (define-instruction fldcw(segment src)
3007 (:printer floating-point ((op '(#b001 #b101))))
3009 (and (not (fp-reg-tn-p src))
3010 (maybe-emit-rex-for-ea segment src nil))
3011 (emit-byte segment #b11011001)
3012 (emit-fp-op segment src #b101)))
3014 ;;; Store Control Word.
3015 (define-instruction fnstcw(segment dst)
3016 (:printer floating-point ((op '(#b001 #b111))))
3018 (and (not (fp-reg-tn-p dst))
3019 (maybe-emit-rex-for-ea segment dst nil))
3020 (emit-byte segment #b11011001)
3021 (emit-fp-op segment dst #b111)))
3023 ;;; Store FP Environment.
3024 (define-instruction fstenv(segment dst)
3025 (:printer floating-point ((op '(#b001 #b110))))
3027 (and (not (fp-reg-tn-p dst))
3028 (maybe-emit-rex-for-ea segment dst nil))
3029 (emit-byte segment #b11011001)
3030 (emit-fp-op segment dst #b110)))
3032 ;;; Restore FP Environment.
3033 (define-instruction fldenv(segment src)
3034 (:printer floating-point ((op '(#b001 #b100))))
3036 (and (not (fp-reg-tn-p src))
3037 (maybe-emit-rex-for-ea segment src nil))
3038 (emit-byte segment #b11011001)
3039 (emit-fp-op segment src #b100)))
3042 (define-instruction fsave(segment dst)
3043 (:printer floating-point ((op '(#b101 #b110))))
3045 (and (not (fp-reg-tn-p dst))
3046 (maybe-emit-rex-for-ea segment dst nil))
3047 (emit-byte segment #b11011101)
3048 (emit-fp-op segment dst #b110)))
3050 ;;; Restore FP State.
3051 (define-instruction frstor(segment src)
3052 (:printer floating-point ((op '(#b101 #b100))))
3054 (and (not (fp-reg-tn-p src))
3055 (maybe-emit-rex-for-ea segment src nil))
3056 (emit-byte segment #b11011101)
3057 (emit-fp-op segment src #b100)))
3059 ;;; Clear exceptions.
3060 (define-instruction fnclex(segment)
3061 (:printer floating-point-5 ((op #b00010)))
3063 (emit-byte segment #b11011011)
3064 (emit-byte segment #b11100010)))
3067 (define-instruction fcom (segment src)
3068 (:printer floating-point ((op '(#b000 #b010))))
3070 (and (not (fp-reg-tn-p src))
3071 (maybe-emit-rex-for-ea segment src nil))
3072 (emit-byte segment #b11011000)
3073 (emit-fp-op segment src #b010)))
3075 (define-instruction fcomd (segment src)
3076 (:printer floating-point ((op '(#b100 #b010))))
3077 (:printer floating-point-fp ((op '(#b000 #b010))))
3079 (if (fp-reg-tn-p src)
3080 (emit-byte segment #b11011000)
3082 (maybe-emit-rex-for-ea segment src nil)
3083 (emit-byte segment #b11011100)))
3084 (emit-fp-op segment src #b010)))
3086 ;;; Compare ST1 to ST0, popping the stack twice.
3087 (define-instruction fcompp (segment)
3088 (:printer floating-point-3 ((op '(#b110 #b011001))))
3090 (emit-byte segment #b11011110)
3091 (emit-byte segment #b11011001)))
3093 ;;; unordered comparison
3094 (define-instruction fucom (segment src)
3095 (:printer floating-point-fp ((op '(#b101 #b100))))
3097 (aver (fp-reg-tn-p src))
3098 (emit-byte segment #b11011101)
3099 (emit-fp-op segment src #b100)))
3101 (define-instruction ftst (segment)
3102 (:printer floating-point-no ((op #b00100)))
3104 (emit-byte segment #b11011001)
3105 (emit-byte segment #b11100100)))
3109 (define-instruction fsqrt(segment)
3110 (:printer floating-point-no ((op #b11010)))
3112 (emit-byte segment #b11011001)
3113 (emit-byte segment #b11111010)))
3115 (define-instruction fscale(segment)
3116 (:printer floating-point-no ((op #b11101)))
3118 (emit-byte segment #b11011001)
3119 (emit-byte segment #b11111101)))
3121 (define-instruction fxtract(segment)
3122 (:printer floating-point-no ((op #b10100)))
3124 (emit-byte segment #b11011001)
3125 (emit-byte segment #b11110100)))
3127 (define-instruction fsin(segment)
3128 (:printer floating-point-no ((op #b11110)))
3130 (emit-byte segment #b11011001)
3131 (emit-byte segment #b11111110)))
3133 (define-instruction fcos(segment)
3134 (:printer floating-point-no ((op #b11111)))
3136 (emit-byte segment #b11011001)
3137 (emit-byte segment #b11111111)))
3139 (define-instruction fprem1(segment)
3140 (:printer floating-point-no ((op #b10101)))
3142 (emit-byte segment #b11011001)
3143 (emit-byte segment #b11110101)))
3145 (define-instruction fprem(segment)
3146 (:printer floating-point-no ((op #b11000)))
3148 (emit-byte segment #b11011001)
3149 (emit-byte segment #b11111000)))
3151 (define-instruction fxam (segment)
3152 (:printer floating-point-no ((op #b00101)))
3154 (emit-byte segment #b11011001)
3155 (emit-byte segment #b11100101)))
3157 ;;; These do push/pop to stack and need special handling
3158 ;;; in any VOPs that use them. See the book.
3160 ;;; st0 <- st1*log2(st0)
3161 (define-instruction fyl2x(segment) ; pops stack
3162 (:printer floating-point-no ((op #b10001)))
3164 (emit-byte segment #b11011001)
3165 (emit-byte segment #b11110001)))
3167 (define-instruction fyl2xp1(segment)
3168 (:printer floating-point-no ((op #b11001)))
3170 (emit-byte segment #b11011001)
3171 (emit-byte segment #b11111001)))
3173 (define-instruction f2xm1(segment)
3174 (:printer floating-point-no ((op #b10000)))
3176 (emit-byte segment #b11011001)
3177 (emit-byte segment #b11110000)))
3179 (define-instruction fptan(segment) ; st(0) <- 1; st(1) <- tan
3180 (:printer floating-point-no ((op #b10010)))
3182 (emit-byte segment #b11011001)
3183 (emit-byte segment #b11110010)))
3185 (define-instruction fpatan(segment) ; POPS STACK
3186 (:printer floating-point-no ((op #b10011)))
3188 (emit-byte segment #b11011001)
3189 (emit-byte segment #b11110011)))
3191 ;;;; loading constants
3193 (define-instruction fldz(segment)
3194 (:printer floating-point-no ((op #b01110)))
3196 (emit-byte segment #b11011001)
3197 (emit-byte segment #b11101110)))
3199 (define-instruction fld1(segment)
3200 (:printer floating-point-no ((op #b01000)))
3202 (emit-byte segment #b11011001)
3203 (emit-byte segment #b11101000)))
3205 (define-instruction fldpi(segment)
3206 (:printer floating-point-no ((op #b01011)))
3208 (emit-byte segment #b11011001)
3209 (emit-byte segment #b11101011)))
3211 (define-instruction fldl2t(segment)
3212 (:printer floating-point-no ((op #b01001)))
3214 (emit-byte segment #b11011001)
3215 (emit-byte segment #b11101001)))
3217 (define-instruction fldl2e(segment)
3218 (:printer floating-point-no ((op #b01010)))
3220 (emit-byte segment #b11011001)
3221 (emit-byte segment #b11101010)))
3223 (define-instruction fldlg2(segment)
3224 (:printer floating-point-no ((op #b01100)))
3226 (emit-byte segment #b11011001)
3227 (emit-byte segment #b11101100)))
3229 (define-instruction fldln2(segment)
3230 (:printer floating-point-no ((op #b01101)))
3232 (emit-byte segment #b11011001)
3233 (emit-byte segment #b11101101)))
3235 ;; new xmm insns required by sse float
3236 ;; movsd andpd comisd comiss
3238 (define-instruction movsd (segment dst src)
3239 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3241 (cond ((typep src 'tn)
3242 (emit-byte segment #xf2)
3243 (maybe-emit-rex-for-ea segment dst src)
3244 (emit-byte segment #x0f)
3245 (emit-byte segment #x11)
3246 (emit-ea segment dst (reg-tn-encoding src)))
3248 (emit-byte segment #xf2)
3249 (maybe-emit-rex-for-ea segment src dst)
3250 (emit-byte segment #x0f)
3251 (emit-byte segment #x10)
3252 (emit-ea segment src (reg-tn-encoding dst))))))
3254 (define-instruction movss (segment dst src)
3255 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3258 (emit-byte segment #xf3)
3259 (maybe-emit-rex-for-ea segment dst src)
3260 (emit-byte segment #x0f)
3261 (emit-byte segment #x11)
3262 (emit-ea segment dst (reg-tn-encoding src)))
3264 (emit-byte segment #xf3)
3265 (maybe-emit-rex-for-ea segment src dst)
3266 (emit-byte segment #x0f)
3267 (emit-byte segment #x10)
3268 (emit-ea segment src (reg-tn-encoding dst))))))
3270 (define-instruction andpd (segment dst src)
3271 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3273 (emit-byte segment #x66)
3274 (maybe-emit-rex-for-ea segment src dst)
3275 (emit-byte segment #x0f)
3276 (emit-byte segment #x54)
3277 (emit-ea segment src (reg-tn-encoding dst))))
3279 (define-instruction andps (segment dst src)
3281 (maybe-emit-rex-for-ea segment src dst)
3282 (emit-byte segment #x0f)
3283 (emit-byte segment #x54)
3284 (emit-ea segment src (reg-tn-encoding dst))))
3286 (define-instruction comisd (segment dst src)
3287 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3289 (emit-byte segment #x66)
3290 (maybe-emit-rex-for-ea segment src dst)
3291 (emit-byte segment #x0f)
3292 (emit-byte segment #x2f)
3293 (emit-ea segment src (reg-tn-encoding dst))))
3295 (define-instruction comiss (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 #x2f)
3301 (emit-ea segment src (reg-tn-encoding dst))))
3303 ;; movd movq xorp xord
3305 ;; we only do the xmm version of movd
3306 (define-instruction movd (segment dst src)
3307 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3309 (cond ((fp-reg-tn-p dst)
3310 (emit-byte segment #x66)
3311 (maybe-emit-rex-for-ea segment src dst)
3312 (emit-byte segment #x0f)
3313 (emit-byte segment #x6e)
3314 (emit-ea segment src (reg-tn-encoding dst)))
3316 (aver (fp-reg-tn-p src))
3317 (emit-byte segment #x66)
3318 (maybe-emit-rex-for-ea segment dst src)
3319 (emit-byte segment #x0f)
3320 (emit-byte segment #x7e)
3321 (emit-ea segment dst (reg-tn-encoding src))))))
3323 (define-instruction movq (segment dst src)
3324 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3326 (cond ((fp-reg-tn-p dst)
3327 (emit-byte segment #xf3)
3328 (maybe-emit-rex-for-ea segment src dst)
3329 (emit-byte segment #x0f)
3330 (emit-byte segment #x7e)
3331 (emit-ea segment src (reg-tn-encoding dst)))
3333 (aver (fp-reg-tn-p src))
3334 (emit-byte segment #x66)
3335 (maybe-emit-rex-for-ea segment dst src)
3336 (emit-byte segment #x0f)
3337 (emit-byte segment #xd6)
3338 (emit-ea segment dst (reg-tn-encoding src))))))
3340 (define-instruction xorpd (segment dst src)
3341 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3343 (emit-byte segment #x66)
3344 (maybe-emit-rex-for-ea segment src dst)
3345 (emit-byte segment #x0f)
3346 (emit-byte segment #x57)
3347 (emit-ea segment src (reg-tn-encoding dst))))
3349 (define-instruction xorps (segment dst src)
3350 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3352 (maybe-emit-rex-for-ea segment src dst)
3353 (emit-byte segment #x0f)
3354 (emit-byte segment #x57)
3355 (emit-ea segment src (reg-tn-encoding dst))))
3357 (define-instruction cvtsd2si (segment dst src)
3358 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3360 (emit-byte segment #xf2)
3361 (maybe-emit-rex-for-ea segment src dst :operand-size :qword)
3362 (emit-byte segment #x0f)
3363 (emit-byte segment #x2d)
3364 (emit-ea segment src (reg-tn-encoding dst))))
3366 (define-instruction cvtsd2ss (segment dst src)
3367 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3369 (emit-byte segment #xf2)
3370 (maybe-emit-rex-for-ea segment src dst)
3371 (emit-byte segment #x0f)
3372 (emit-byte segment #x5a)
3373 (emit-ea segment src (reg-tn-encoding dst))))
3375 (define-instruction cvtss2si (segment dst src)
3376 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3378 (emit-byte segment #xf3)
3379 (maybe-emit-rex-for-ea segment src dst :operand-size :qword)
3380 (emit-byte segment #x0f)
3381 (emit-byte segment #x2d)
3382 (emit-ea segment src (reg-tn-encoding dst))))
3384 (define-instruction cvtss2sd (segment dst src)
3385 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3387 (emit-byte segment #xf3)
3388 (maybe-emit-rex-for-ea segment src dst)
3389 (emit-byte segment #x0f)
3390 (emit-byte segment #x5a)
3391 (emit-ea segment src (reg-tn-encoding dst))))
3393 (define-instruction cvtsi2ss (segment dst src)
3394 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3396 (emit-byte segment #xf3)
3397 (maybe-emit-rex-for-ea segment src dst)
3398 (emit-byte segment #x0f)
3399 (emit-byte segment #x2a)
3400 (emit-ea segment src (reg-tn-encoding dst))))
3402 (define-instruction cvtsi2sd (segment dst src)
3403 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3405 (emit-byte segment #xf2)
3406 (maybe-emit-rex-for-ea segment src dst)
3407 (emit-byte segment #x0f)
3408 (emit-byte segment #x2a)
3409 (emit-ea segment src (reg-tn-encoding dst))))
3411 (define-instruction cvtdq2pd (segment dst src)
3412 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3414 (emit-byte segment #xf3)
3415 (maybe-emit-rex-for-ea segment src dst)
3416 (emit-byte segment #x0f)
3417 (emit-byte segment #xe6)
3418 (emit-ea segment src (reg-tn-encoding dst))))
3420 (define-instruction cvtdq2ps (segment dst src)
3421 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3423 (maybe-emit-rex-for-ea segment src dst)
3424 (emit-byte segment #x0f)
3425 (emit-byte segment #x5b)
3426 (emit-ea segment src (reg-tn-encoding dst))))
3428 ;; CVTTSD2SI CVTTSS2SI
3430 (define-instruction cvttsd2si (segment dst src)
3431 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3433 (emit-byte segment #xf2)
3434 (maybe-emit-rex-for-ea segment src dst :operand-size :qword)
3435 (emit-byte segment #x0f)
3436 (emit-byte segment #x2c)
3437 (emit-ea segment src (reg-tn-encoding dst))))
3439 (define-instruction cvttss2si (segment dst src)
3440 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3442 (emit-byte segment #xf3)
3443 (maybe-emit-rex-for-ea segment src dst :operand-size :qword)
3444 (emit-byte segment #x0f)
3445 (emit-byte segment #x2c)
3446 (emit-ea segment src (reg-tn-encoding dst))))
3448 (define-instruction addsd (segment dst src)
3449 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3451 (emit-byte segment #xf2)
3452 (maybe-emit-rex-for-ea segment src dst)
3453 (emit-byte segment #x0f)
3454 (emit-byte segment #x58)
3455 (emit-ea segment src (reg-tn-encoding dst))))
3457 (define-instruction addss (segment dst src)
3458 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3460 (emit-byte segment #xf3)
3461 (maybe-emit-rex-for-ea segment src dst)
3462 (emit-byte segment #x0f)
3463 (emit-byte segment #x58)
3464 (emit-ea segment src (reg-tn-encoding dst))))
3466 (define-instruction divsd (segment dst src)
3467 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3469 (emit-byte segment #xf2)
3470 (maybe-emit-rex-for-ea segment src dst)
3471 (emit-byte segment #x0f)
3472 (emit-byte segment #x5e)
3473 (emit-ea segment src (reg-tn-encoding dst))))
3475 (define-instruction divss (segment dst src)
3476 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3478 (emit-byte segment #xf3)
3479 (maybe-emit-rex-for-ea segment src dst)
3480 (emit-byte segment #x0f)
3481 (emit-byte segment #x5e)
3482 (emit-ea segment src (reg-tn-encoding dst))))
3484 (define-instruction mulsd (segment dst src)
3485 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3487 (emit-byte segment #xf2)
3488 (maybe-emit-rex-for-ea segment src dst)
3489 (emit-byte segment #x0f)
3490 (emit-byte segment #x59)
3491 (emit-ea segment src (reg-tn-encoding dst))))
3493 (define-instruction mulss (segment dst src)
3494 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3496 (emit-byte segment #xf3)
3497 (maybe-emit-rex-for-ea segment src dst)
3498 (emit-byte segment #x0f)
3499 (emit-byte segment #x59)
3500 (emit-ea segment src (reg-tn-encoding dst))))
3502 (define-instruction subsd (segment dst src)
3503 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3505 (emit-byte segment #xf2)
3506 (maybe-emit-rex-for-ea segment src dst)
3507 (emit-byte segment #x0f)
3508 (emit-byte segment #x5c)
3509 (emit-ea segment src (reg-tn-encoding dst))))
3511 (define-instruction subss (segment dst src)
3512 ; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong
3514 (emit-byte segment #xf3)
3515 (maybe-emit-rex-for-ea segment src dst)
3516 (emit-byte segment #x0f)
3517 (emit-byte segment #x5c)
3518 (emit-ea segment src (reg-tn-encoding dst))))
3520 (define-instruction ldmxcsr (segment src)
3522 (emit-byte segment #x0f)
3523 (emit-byte segment #xae)
3524 (emit-ea segment src 2)))
3526 (define-instruction stmxcsr (segment dst)
3528 (emit-byte segment #x0f)
3529 (emit-byte segment #xae)
3530 (emit-ea segment dst 3)))