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 ;;; The XMM registers XMM0 - XMM15.
29 (deftype xmmreg () '(unsigned-byte 4))
31 ;;; Default word size for the chip: if the operand size /= :dword
32 ;;; we need to output #x66 (or REX) prefix
33 (def!constant +default-operand-size+ :dword)
35 ;;; The default address size for the chip. It could be overwritten
36 ;;; to :dword with a #x67 prefix, but this is never needed by SBCL
37 ;;; and thus not supported by this assembler/disassembler.
38 (def!constant +default-address-size+ :qword)
40 (eval-when (#-sb-xc :compile-toplevel :load-toplevel :execute)
42 (defun offset-next (value dstate)
43 (declare (type integer value)
44 (type sb!disassem:disassem-state dstate))
45 (+ (sb!disassem:dstate-next-addr dstate) value))
47 (defparameter *byte-reg-names*
48 #(al cl dl bl spl bpl sil dil r8b r9b r10b r11b r12b r13b r14b r15b))
49 (defparameter *high-byte-reg-names*
51 (defparameter *word-reg-names*
52 #(ax cx dx bx sp bp si di r8w r9w r10w r11w r12w r13w r14w r15w))
53 (defparameter *dword-reg-names*
54 #(eax ecx edx ebx esp ebp esi edi r8d r9d r10d r11d r12d r13d r14d r15d))
55 (defparameter *qword-reg-names*
56 #(rax rcx rdx rbx rsp rbp rsi rdi r8 r9 r10 r11 r12 r13 r14 r15))
58 ;;; The printers for registers, memory references and immediates need to
59 ;;; take into account the width bit in the instruction, whether a #x66
60 ;;; or a REX prefix was issued, and the contents of the REX prefix.
61 ;;; This is implemented using prefilters to put flags into the slot
62 ;;; INST-PROPERTIES of the DSTATE. These flags are the following
65 ;;; OPERAND-SIZE-8 The width bit was zero
66 ;;; OPERAND-SIZE-16 The "operand size override" prefix (#x66) was found
67 ;;; REX A REX prefix was found
68 ;;; REX-W A REX prefix with the "operand width" bit set was
70 ;;; REX-R A REX prefix with the "register" bit set was found
71 ;;; REX-X A REX prefix with the "index" bit set was found
72 ;;; REX-B A REX prefix with the "base" bit set was found
74 ;;; Return the operand size depending on the prefixes and width bit as
76 (defun inst-operand-size (dstate)
77 (declare (type sb!disassem:disassem-state dstate))
78 (cond ((sb!disassem:dstate-get-inst-prop dstate 'operand-size-8)
80 ((sb!disassem:dstate-get-inst-prop dstate 'rex-w)
82 ((sb!disassem:dstate-get-inst-prop dstate 'operand-size-16)
85 +default-operand-size+)))
87 ;;; The same as INST-OPERAND-SIZE, but for those instructions (e.g.
88 ;;; PUSH, JMP) that have a default operand size of :qword. It can only
89 ;;; be overwritten to :word.
90 (defun inst-operand-size-default-qword (dstate)
91 (declare (type sb!disassem:disassem-state dstate))
92 (if (sb!disassem:dstate-get-inst-prop dstate 'operand-size-16)
96 ;;; Print to STREAM the name of the general-purpose register encoded by
97 ;;; VALUE and of size WIDTH. For robustness, the high byte registers
98 ;;; (AH, BH, CH, DH) are correctly detected, too, although the compiler
99 ;;; does not use them.
100 (defun print-reg-with-width (value width stream dstate)
101 (declare (type full-reg value)
103 (type sb!disassem:disassem-state dstate))
104 (princ (if (and (eq width :byte)
106 (not (sb!disassem:dstate-get-inst-prop dstate 'rex)))
107 (aref *high-byte-reg-names* (- value 4))
109 (:byte *byte-reg-names*)
110 (:word *word-reg-names*)
111 (:dword *dword-reg-names*)
112 (:qword *qword-reg-names*))
115 ;; XXX plus should do some source-var notes
118 (defun print-reg (value stream dstate)
119 (declare (type full-reg value)
121 (type sb!disassem:disassem-state dstate))
122 (print-reg-with-width value
123 (inst-operand-size dstate)
127 (defun print-reg-default-qword (value stream dstate)
128 (declare (type full-reg value)
130 (type sb!disassem:disassem-state dstate))
131 (print-reg-with-width value
132 (inst-operand-size-default-qword dstate)
136 (defun print-byte-reg (value stream dstate)
137 (declare (type full-reg value)
139 (type sb!disassem:disassem-state dstate))
140 (print-reg-with-width value :byte stream dstate))
142 (defun print-addr-reg (value stream dstate)
143 (declare (type full-reg value)
145 (type sb!disassem:disassem-state dstate))
146 (print-reg-with-width value +default-address-size+ stream dstate))
148 ;;; Print a register or a memory reference of the given WIDTH.
149 ;;; If SIZED-P is true, add an explicit size indicator for memory
151 (defun print-reg/mem-with-width (value width sized-p stream dstate)
152 (declare (type (or list full-reg) value)
153 (type (member :byte :word :dword :qword) width)
154 (type boolean sized-p)
156 (type sb!disassem:disassem-state dstate))
157 (if (typep value 'full-reg)
158 (print-reg-with-width value width stream dstate)
159 (print-mem-access value (and sized-p width) stream dstate)))
161 ;;; Print a register or a memory reference. The width is determined by
162 ;;; calling INST-OPERAND-SIZE.
163 (defun print-reg/mem (value stream dstate)
164 (declare (type (or list full-reg) value)
166 (type sb!disassem:disassem-state dstate))
167 (print-reg/mem-with-width
168 value (inst-operand-size dstate) nil stream dstate))
170 ;; Same as print-reg/mem, but prints an explicit size indicator for
171 ;; memory references.
172 (defun print-sized-reg/mem (value stream dstate)
173 (declare (type (or list full-reg) value)
175 (type sb!disassem:disassem-state dstate))
176 (print-reg/mem-with-width
177 value (inst-operand-size dstate) t stream dstate))
179 ;;; Same as print-sized-reg/mem, but with a default operand size of
181 (defun print-sized-reg/mem-default-qword (value stream dstate)
182 (declare (type (or list full-reg) value)
184 (type sb!disassem:disassem-state dstate))
185 (print-reg/mem-with-width
186 value (inst-operand-size-default-qword dstate) t stream dstate))
188 (defun print-sized-byte-reg/mem (value stream dstate)
189 (declare (type (or list full-reg) value)
191 (type sb!disassem:disassem-state dstate))
192 (print-reg/mem-with-width value :byte t stream dstate))
194 (defun print-sized-word-reg/mem (value stream dstate)
195 (declare (type (or list full-reg) value)
197 (type sb!disassem:disassem-state dstate))
198 (print-reg/mem-with-width value :word t stream dstate))
200 (defun print-sized-dword-reg/mem (value stream dstate)
201 (declare (type (or list full-reg) value)
203 (type sb!disassem:disassem-state dstate))
204 (print-reg/mem-with-width value :dword t stream dstate))
206 (defun print-label (value stream dstate)
207 (declare (ignore dstate))
208 (sb!disassem:princ16 value stream))
210 (defun print-xmmreg (value stream dstate)
211 (declare (type xmmreg value)
214 (format stream "XMM~d" value))
216 (defun print-xmmreg/mem (value stream dstate)
217 (declare (type (or list xmmreg) value)
219 (type sb!disassem:disassem-state dstate))
220 (if (typep value 'xmmreg)
221 (print-xmmreg value stream dstate)
222 (print-mem-access value nil stream dstate)))
224 ;; Same as print-xmmreg/mem, but prints an explicit size indicator for
225 ;; memory references.
226 (defun print-sized-xmmreg/mem (value stream dstate)
227 (declare (type (or list xmmreg) value)
229 (type sb!disassem:disassem-state dstate))
230 (if (typep value 'xmmreg)
231 (print-xmmreg value stream dstate)
232 (print-mem-access value (inst-operand-size dstate) stream dstate)))
234 ;;; This prefilter is used solely for its side effects, namely to put
235 ;;; the bits found in the REX prefix into the DSTATE for use by other
236 ;;; prefilters and by printers.
237 (defun prefilter-wrxb (value dstate)
238 (declare (type (unsigned-byte 4) value)
239 (type sb!disassem:disassem-state dstate))
240 (sb!disassem:dstate-put-inst-prop dstate 'rex)
241 (when (plusp (logand value #b1000))
242 (sb!disassem:dstate-put-inst-prop dstate 'rex-w))
243 (when (plusp (logand value #b0100))
244 (sb!disassem:dstate-put-inst-prop dstate 'rex-r))
245 (when (plusp (logand value #b0010))
246 (sb!disassem:dstate-put-inst-prop dstate 'rex-x))
247 (when (plusp (logand value #b0001))
248 (sb!disassem:dstate-put-inst-prop dstate 'rex-b))
251 ;;; This prefilter is used solely for its side effect, namely to put
252 ;;; the property OPERAND-SIZE-8 into the DSTATE if VALUE is 0.
253 (defun prefilter-width (value dstate)
254 (declare (type bit value)
255 (type sb!disassem:disassem-state dstate))
257 (sb!disassem:dstate-put-inst-prop dstate 'operand-size-8))
260 ;;; This prefilter is used solely for its side effect, namely to put
261 ;;; the property OPERAND-SIZE-16 into the DSTATE.
262 (defun prefilter-x66 (value dstate)
263 (declare (type (eql #x66) value)
265 (type sb!disassem:disassem-state dstate))
266 (sb!disassem:dstate-put-inst-prop dstate 'operand-size-16))
268 ;;; A register field that can be extended by REX.R.
269 (defun prefilter-reg-r (value dstate)
270 (declare (type reg value)
271 (type sb!disassem:disassem-state dstate))
272 (if (sb!disassem::dstate-get-inst-prop dstate 'rex-r)
276 ;;; A register field that can be extended by REX.B.
277 (defun prefilter-reg-b (value dstate)
278 (declare (type reg value)
279 (type sb!disassem:disassem-state dstate))
280 (if (sb!disassem::dstate-get-inst-prop dstate 'rex-b)
284 ;;; Returns either an integer, meaning a register, or a list of
285 ;;; (BASE-REG OFFSET INDEX-REG INDEX-SCALE), where any component
286 ;;; may be missing or nil to indicate that it's not used or has the
287 ;;; obvious default value (e.g., 1 for the index-scale). VALUE is a list
288 ;;; of the mod and r/m field of the ModRM byte of the instruction.
289 ;;; Depending on VALUE a SIB byte and/or an offset may be read. The
290 ;;; REX.B bit from DSTATE is used to extend the sole register or the
291 ;;; BASE-REG to a full register, the REX.X bit does the same for the
293 (defun prefilter-reg/mem (value dstate)
294 (declare (type list value)
295 (type sb!disassem:disassem-state dstate))
296 (let ((mod (first value))
297 (r/m (second value)))
298 (declare (type (unsigned-byte 2) mod)
299 (type (unsigned-byte 3) r/m))
300 (let ((full-reg (if (sb!disassem:dstate-get-inst-prop dstate 'rex-b)
303 (declare (type full-reg full-reg))
309 (let ((sib (sb!disassem:read-suffix 8 dstate)))
310 (declare (type (unsigned-byte 8) sib))
311 (let ((base-reg (ldb (byte 3 0) sib))
312 (index-reg (ldb (byte 3 3) sib))
313 (index-scale (ldb (byte 2 6) sib)))
314 (declare (type (unsigned-byte 3) base-reg index-reg)
315 (type (unsigned-byte 2) index-scale))
319 (if (= base-reg #b101)
320 (sb!disassem:read-signed-suffix 32 dstate)
323 (sb!disassem:read-signed-suffix 8 dstate))
325 (sb!disassem:read-signed-suffix 32 dstate)))))
326 (list (unless (and (= mod #b00) (= base-reg #b101))
327 (if (sb!disassem:dstate-get-inst-prop dstate 'rex-b)
331 (unless (= index-reg #b100)
332 (if (sb!disassem:dstate-get-inst-prop dstate 'rex-x)
335 (ash 1 index-scale))))))
336 ((and (= mod #b00) (= r/m #b101))
337 (list 'rip (sb!disassem:read-signed-suffix 32 dstate)))
341 (list full-reg (sb!disassem:read-signed-suffix 8 dstate)))
343 (list full-reg (sb!disassem:read-signed-suffix 32 dstate)))))))
345 (defun read-address (value dstate)
346 (declare (ignore value)) ; always nil anyway
347 (sb!disassem:read-suffix (width-bits (inst-operand-size dstate)) dstate))
349 (defun width-bits (width)
358 ;;;; disassembler argument types
360 ;;; Used to capture the lower four bits of the REX prefix.
361 (sb!disassem:define-arg-type wrxb
362 :prefilter #'prefilter-wrxb)
364 (sb!disassem:define-arg-type width
365 :prefilter #'prefilter-width
366 :printer (lambda (value stream dstate)
367 (declare (ignore value))
368 (princ (schar (symbol-name (inst-operand-size dstate)) 0)
371 ;;; Used to capture the effect of the #x66 operand size override prefix.
372 (sb!disassem:define-arg-type x66
373 :prefilter #'prefilter-x66)
375 (sb!disassem:define-arg-type displacement
377 :use-label #'offset-next
378 :printer (lambda (value stream dstate)
379 (sb!disassem:maybe-note-assembler-routine value nil dstate)
380 (print-label value stream dstate)))
382 (sb!disassem:define-arg-type accum
383 :printer (lambda (value stream dstate)
384 (declare (ignore value)
386 (type sb!disassem:disassem-state dstate))
387 (print-reg 0 stream dstate)))
389 (sb!disassem:define-arg-type reg
390 :prefilter #'prefilter-reg-r
391 :printer #'print-reg)
393 (sb!disassem:define-arg-type reg-b
394 :prefilter #'prefilter-reg-b
395 :printer #'print-reg)
397 (sb!disassem:define-arg-type reg-b-default-qword
398 :prefilter #'prefilter-reg-b
399 :printer #'print-reg-default-qword)
401 (sb!disassem:define-arg-type imm-addr
402 :prefilter #'read-address
403 :printer #'print-label)
405 ;;; Normally, immediate values for an operand size of :qword are of size
406 ;;; :dword and are sign-extended to 64 bits. For an exception, see the
407 ;;; argument type definition following this one.
408 (sb!disassem:define-arg-type signed-imm-data
409 :prefilter (lambda (value dstate)
410 (declare (ignore value)) ; always nil anyway
411 (let ((width (width-bits (inst-operand-size dstate))))
414 (sb!disassem:read-signed-suffix width dstate))))
416 ;;; Used by the variant of the MOV instruction with opcode B8 which can
417 ;;; move immediates of all sizes (i.e. including :qword) into a
419 (sb!disassem:define-arg-type signed-imm-data-upto-qword
420 :prefilter (lambda (value dstate)
421 (declare (ignore value)) ; always nil anyway
422 (sb!disassem:read-signed-suffix
423 (width-bits (inst-operand-size dstate))
426 ;;; Used by those instructions that have a default operand size of
427 ;;; :qword. Nevertheless the immediate is at most of size :dword.
428 ;;; The only instruction of this kind having a variant with an immediate
429 ;;; argument is PUSH.
430 (sb!disassem:define-arg-type signed-imm-data-default-qword
431 :prefilter (lambda (value dstate)
432 (declare (ignore value)) ; always nil anyway
433 (let ((width (width-bits
434 (inst-operand-size-default-qword dstate))))
437 (sb!disassem:read-signed-suffix width dstate))))
439 (sb!disassem:define-arg-type signed-imm-byte
440 :prefilter (lambda (value dstate)
441 (declare (ignore value)) ; always nil anyway
442 (sb!disassem:read-signed-suffix 8 dstate)))
444 (sb!disassem:define-arg-type imm-byte
445 :prefilter (lambda (value dstate)
446 (declare (ignore value)) ; always nil anyway
447 (sb!disassem:read-suffix 8 dstate)))
449 ;;; needed for the ret imm16 instruction
450 (sb!disassem:define-arg-type imm-word-16
451 :prefilter (lambda (value dstate)
452 (declare (ignore value)) ; always nil anyway
453 (sb!disassem:read-suffix 16 dstate)))
455 (sb!disassem:define-arg-type reg/mem
456 :prefilter #'prefilter-reg/mem
457 :printer #'print-reg/mem)
458 (sb!disassem:define-arg-type sized-reg/mem
459 ;; Same as reg/mem, but prints an explicit size indicator for
460 ;; memory references.
461 :prefilter #'prefilter-reg/mem
462 :printer #'print-sized-reg/mem)
464 ;;; Arguments of type reg/mem with a fixed size.
465 (sb!disassem:define-arg-type sized-byte-reg/mem
466 :prefilter #'prefilter-reg/mem
467 :printer #'print-sized-byte-reg/mem)
468 (sb!disassem:define-arg-type sized-word-reg/mem
469 :prefilter #'prefilter-reg/mem
470 :printer #'print-sized-word-reg/mem)
471 (sb!disassem:define-arg-type sized-dword-reg/mem
472 :prefilter #'prefilter-reg/mem
473 :printer #'print-sized-dword-reg/mem)
475 ;;; Same as sized-reg/mem, but with a default operand size of :qword.
476 (sb!disassem:define-arg-type sized-reg/mem-default-qword
477 :prefilter #'prefilter-reg/mem
478 :printer #'print-sized-reg/mem-default-qword)
481 (sb!disassem:define-arg-type xmmreg
482 :prefilter #'prefilter-reg-r
483 :printer #'print-xmmreg)
485 (sb!disassem:define-arg-type xmmreg-b
486 :prefilter #'prefilter-reg-b
487 :printer #'print-xmmreg)
489 (sb!disassem:define-arg-type xmmreg/mem
490 :prefilter #'prefilter-reg/mem
491 :printer #'print-xmmreg/mem)
493 (sb!disassem:define-arg-type sized-xmmreg/mem
494 :prefilter #'prefilter-reg/mem
495 :printer #'print-sized-xmmreg/mem)
498 (eval-when (:compile-toplevel :load-toplevel :execute)
499 (defparameter *conditions*
502 (:b . 2) (:nae . 2) (:c . 2)
503 (:nb . 3) (:ae . 3) (:nc . 3)
504 (:eq . 4) (:e . 4) (:z . 4)
511 (:np . 11) (:po . 11)
512 (:l . 12) (:nge . 12)
513 (:nl . 13) (:ge . 13)
514 (:le . 14) (:ng . 14)
515 (:nle . 15) (:g . 15)))
516 (defparameter *condition-name-vec*
517 (let ((vec (make-array 16 :initial-element nil)))
518 (dolist (cond *conditions*)
519 (when (null (aref vec (cdr cond)))
520 (setf (aref vec (cdr cond)) (car cond))))
524 ;;; SSE shuffle patterns. The names end in the number of bits of the
525 ;;; immediate byte that are used to encode the pattern and the radix
526 ;;; in which to print the value.
527 (macrolet ((define-sse-shuffle-arg-type (name format-string)
528 `(sb!disassem:define-arg-type ,name
530 :printer (lambda (value stream dstate)
531 (declare (type (unsigned-byte 8) value)
534 (format stream ,format-string value)))))
535 (define-sse-shuffle-arg-type sse-shuffle-pattern-2-2 "#b~2,'0B")
536 (define-sse-shuffle-arg-type sse-shuffle-pattern-8-4 "#4r~4,4,'0R"))
538 ;;; Set assembler parameters. (In CMU CL, this was done with
539 ;;; a call to a macro DEF-ASSEMBLER-PARAMS.)
540 (eval-when (:compile-toplevel :load-toplevel :execute)
541 (setf sb!assem:*assem-scheduler-p* nil))
543 (sb!disassem:define-arg-type condition-code
544 :printer *condition-name-vec*)
546 (defun conditional-opcode (condition)
547 (cdr (assoc condition *conditions* :test #'eq)))
549 ;;;; disassembler instruction formats
551 (eval-when (:compile-toplevel :execute)
552 (defun swap-if (direction field1 separator field2)
553 `(:if (,direction :constant 0)
554 (,field1 ,separator ,field2)
555 (,field2 ,separator ,field1))))
557 (sb!disassem:define-instruction-format (byte 8 :default-printer '(:name))
558 (op :field (byte 8 0))
563 (sb!disassem:define-instruction-format (two-bytes 16
564 :default-printer '(:name))
565 (op :fields (list (byte 8 0) (byte 8 8))))
567 (sb!disassem:define-instruction-format (three-bytes 24
568 :default-printer '(:name))
569 (op :fields (list (byte 8 0) (byte 8 8) (byte 8 16))))
571 ;;; A one-byte instruction with a #x66 prefix, used to indicate an
572 ;;; operand size of :word.
573 (sb!disassem:define-instruction-format (x66-byte 16
574 :default-printer '(:name))
575 (x66 :field (byte 8 0) :value #x66)
576 (op :field (byte 8 8)))
578 ;;; A one-byte instruction with a REX prefix, used to indicate an
579 ;;; operand size of :qword. REX.W must be 1, the other three bits are
581 (sb!disassem:define-instruction-format (rex-byte 16
582 :default-printer '(:name))
583 (rex :field (byte 5 3) :value #b01001)
584 (op :field (byte 8 8)))
586 (sb!disassem:define-instruction-format (simple 8)
587 (op :field (byte 7 1))
588 (width :field (byte 1 0) :type 'width)
593 (sb!disassem:define-instruction-format (rex-simple 16)
594 (rex :field (byte 4 4) :value #b0100)
595 (wrxb :field (byte 4 0) :type 'wrxb)
596 (op :field (byte 7 9))
597 (width :field (byte 1 8) :type 'width)
602 ;;; Same as simple, but with direction bit
603 (sb!disassem:define-instruction-format (simple-dir 8 :include 'simple)
604 (op :field (byte 6 2))
605 (dir :field (byte 1 1)))
607 ;;; Same as simple, but with the immediate value occurring by default,
608 ;;; and with an appropiate printer.
609 (sb!disassem:define-instruction-format (accum-imm 8
611 :default-printer '(:name
612 :tab accum ", " imm))
613 (imm :type 'signed-imm-data))
615 (sb!disassem:define-instruction-format (rex-accum-imm 16
617 :default-printer '(:name
618 :tab accum ", " imm))
619 (imm :type 'signed-imm-data))
621 (sb!disassem:define-instruction-format (reg-no-width 8
622 :default-printer '(:name :tab reg))
623 (op :field (byte 5 3))
624 (reg :field (byte 3 0) :type 'reg-b)
629 (sb!disassem:define-instruction-format (rex-reg-no-width 16
630 :default-printer '(:name :tab reg))
631 (rex :field (byte 4 4) :value #b0100)
632 (wrxb :field (byte 4 0) :type 'wrxb)
633 (op :field (byte 5 11))
634 (reg :field (byte 3 8) :type 'reg-b)
639 ;;; Same as reg-no-width, but with a default operand size of :qword.
640 (sb!disassem:define-instruction-format (reg-no-width-default-qword 8
641 :include 'reg-no-width
642 :default-printer '(:name :tab reg))
643 (reg :type 'reg-b-default-qword))
645 ;;; Same as rex-reg-no-width, but with a default operand size of :qword.
646 (sb!disassem:define-instruction-format (rex-reg-no-width-default-qword 16
647 :include 'rex-reg-no-width
648 :default-printer '(:name :tab reg))
649 (reg :type 'reg-b-default-qword))
651 ;;; Adds a width field to reg-no-width. Note that we can't use
652 ;;; :INCLUDE 'REG-NO-WIDTH here to save typing because that would put
653 ;;; the WIDTH field last, but the prefilter for WIDTH must run before
654 ;;; the one for IMM to be able to determine the correct size of IMM.
655 (sb!disassem:define-instruction-format (reg 8
656 :default-printer '(:name :tab reg))
657 (op :field (byte 4 4))
658 (width :field (byte 1 3) :type 'width)
659 (reg :field (byte 3 0) :type 'reg-b)
664 (sb!disassem:define-instruction-format (rex-reg 16
665 :default-printer '(:name :tab reg))
666 (rex :field (byte 4 4) :value #b0100)
667 (wrxb :field (byte 4 0) :type 'wrxb)
668 (width :field (byte 1 11) :type 'width)
669 (op :field (byte 4 12))
670 (reg :field (byte 3 8) :type 'reg-b)
675 (sb!disassem:define-instruction-format (two-bytes 16
676 :default-printer '(:name))
677 (op :fields (list (byte 8 0) (byte 8 8))))
679 (sb!disassem:define-instruction-format (reg-reg/mem 16
681 `(:name :tab reg ", " reg/mem))
682 (op :field (byte 7 1))
683 (width :field (byte 1 0) :type 'width)
684 (reg/mem :fields (list (byte 2 14) (byte 3 8))
686 (reg :field (byte 3 11) :type 'reg)
690 (sb!disassem:define-instruction-format (rex-reg-reg/mem 24
692 `(:name :tab reg ", " reg/mem))
693 (rex :field (byte 4 4) :value #b0100)
694 (wrxb :field (byte 4 0) :type 'wrxb)
695 (width :field (byte 1 8) :type 'width)
696 (op :field (byte 7 9))
697 (reg/mem :fields (list (byte 2 22) (byte 3 16))
699 (reg :field (byte 3 19) :type 'reg)
703 ;;; same as reg-reg/mem, but with direction bit
704 (sb!disassem:define-instruction-format (reg-reg/mem-dir 16
705 :include 'reg-reg/mem
709 ,(swap-if 'dir 'reg/mem ", " 'reg)))
710 (op :field (byte 6 2))
711 (dir :field (byte 1 1)))
713 (sb!disassem:define-instruction-format (rex-reg-reg/mem-dir 24
714 :include 'rex-reg-reg/mem
718 ,(swap-if 'dir 'reg/mem ", " 'reg)))
719 (op :field (byte 6 10))
720 (dir :field (byte 1 9)))
722 (sb!disassem:define-instruction-format (x66-reg-reg/mem-dir 24
726 ,(swap-if 'dir 'reg/mem ", " 'reg)))
727 (x66 :field (byte 8 0) :type 'x66 :value #x66)
728 (op :field (byte 6 10))
729 (dir :field (byte 1 9))
730 (width :field (byte 1 8) :type 'width)
731 (reg/mem :fields (list (byte 2 22) (byte 3 16))
733 (reg :field (byte 3 19) :type 'reg))
735 (sb!disassem:define-instruction-format (x66-rex-reg-reg/mem-dir 32
739 ,(swap-if 'dir 'reg/mem ", " 'reg)))
740 (x66 :field (byte 8 0) :type 'x66 :value #x66)
741 (rex :field (byte 4 12) :value #b0100)
742 (wrxb :field (byte 4 8) :type 'wrxb)
743 (op :field (byte 6 18))
744 (dir :field (byte 1 17))
745 (width :field (byte 1 16) :type 'width)
746 (reg/mem :fields (list (byte 2 30) (byte 3 24))
748 (reg :field (byte 3 27) :type 'reg))
750 ;;; Same as reg-reg/mem, but uses the reg field as a second op code.
751 (sb!disassem:define-instruction-format (reg/mem 16
752 :default-printer '(:name :tab reg/mem))
753 (op :fields (list (byte 7 1) (byte 3 11)))
754 (width :field (byte 1 0) :type 'width)
755 (reg/mem :fields (list (byte 2 14) (byte 3 8))
756 :type 'sized-reg/mem)
760 (sb!disassem:define-instruction-format (rex-reg/mem 24
761 :default-printer '(:name :tab reg/mem))
762 (rex :field (byte 4 4) :value #b0100)
763 (wrxb :field (byte 4 0) :type 'wrxb)
764 (op :fields (list (byte 7 9) (byte 3 19)))
765 (width :field (byte 1 8) :type 'width)
766 (reg/mem :fields (list (byte 2 22) (byte 3 16))
767 :type 'sized-reg/mem)
771 ;;; Same as reg/mem, but without a width field and with a default
772 ;;; operand size of :qword.
773 (sb!disassem:define-instruction-format (reg/mem-default-qword 16
774 :default-printer '(:name :tab reg/mem))
775 (op :fields (list (byte 8 0) (byte 3 11)))
776 (reg/mem :fields (list (byte 2 14) (byte 3 8))
777 :type 'sized-reg/mem-default-qword))
779 (sb!disassem:define-instruction-format (rex-reg/mem-default-qword 24
780 :default-printer '(:name :tab reg/mem))
781 (rex :field (byte 4 4) :value #b0100)
782 (wrxb :field (byte 4 0) :type 'wrxb)
783 (op :fields (list (byte 8 8) (byte 3 19)))
784 (reg/mem :fields (list (byte 2 22) (byte 3 16))
785 :type 'sized-reg/mem-default-qword))
787 ;;; Same as reg/mem, but with the immediate value occurring by default,
788 ;;; and with an appropiate printer.
789 (sb!disassem:define-instruction-format (reg/mem-imm 16
792 '(:name :tab reg/mem ", " imm))
793 (reg/mem :type 'sized-reg/mem)
794 (imm :type 'signed-imm-data))
796 (sb!disassem:define-instruction-format (rex-reg/mem-imm 24
797 :include 'rex-reg/mem
799 '(:name :tab reg/mem ", " imm))
800 (reg/mem :type 'sized-reg/mem)
801 (imm :type 'signed-imm-data))
803 ;;; Same as reg/mem, but with using the accumulator in the default printer
804 (sb!disassem:define-instruction-format
806 :include 'reg/mem :default-printer '(:name :tab accum ", " reg/mem))
807 (reg/mem :type 'reg/mem) ; don't need a size
808 (accum :type 'accum))
810 (sb!disassem:define-instruction-format (rex-accum-reg/mem 24
811 :include 'rex-reg/mem
813 '(:name :tab accum ", " reg/mem))
814 (reg/mem :type 'reg/mem) ; don't need a size
815 (accum :type 'accum))
817 ;;; Same as reg-reg/mem, but with a prefix of #b00001111
818 (sb!disassem:define-instruction-format (ext-reg-reg/mem 24
820 `(:name :tab reg ", " reg/mem))
821 (prefix :field (byte 8 0) :value #b00001111)
822 (op :field (byte 7 9))
823 (width :field (byte 1 8) :type 'width)
824 (reg/mem :fields (list (byte 2 22) (byte 3 16))
826 (reg :field (byte 3 19) :type 'reg)
830 (sb!disassem:define-instruction-format (x66-ext-reg-reg/mem 32
832 `(:name :tab reg ", " reg/mem))
833 (x66 :field (byte 8 0) :type 'x66 :value #x66)
834 (prefix :field (byte 8 8) :value #b00001111)
835 (op :field (byte 7 17))
836 (width :field (byte 1 16) :type 'width)
837 (reg/mem :fields (list (byte 2 30) (byte 3 24))
839 (reg :field (byte 3 27) :type 'reg)
843 (sb!disassem:define-instruction-format (rex-ext-reg-reg/mem 32
845 `(:name :tab reg ", " reg/mem))
846 (rex :field (byte 4 4) :value #b0100)
847 (wrxb :field (byte 4 0) :type 'wrxb)
848 (prefix :field (byte 8 8) :value #b00001111)
849 (op :field (byte 7 17))
850 (width :field (byte 1 16) :type 'width)
851 (reg/mem :fields (list (byte 2 30) (byte 3 24))
853 (reg :field (byte 3 27) :type 'reg)
857 (sb!disassem:define-instruction-format (x66-rex-ext-reg-reg/mem 40
859 `(:name :tab reg ", " reg/mem))
860 (x66 :field (byte 8 0) :type 'x66 :value #x66)
861 (rex :field (byte 4 12) :value #b0100)
862 (wrxb :field (byte 4 8) :type 'wrxb)
863 (prefix :field (byte 8 16) :value #b00001111)
864 (op :field (byte 7 25))
865 (width :field (byte 1 24) :type 'width)
866 (reg/mem :fields (list (byte 2 38) (byte 3 32))
868 (reg :field (byte 3 35) :type 'reg)
872 (eval-when (:compile-toplevel :execute)
873 (defun ext-reg-reg/mem-printer-list (op &optional printer)
874 `((ext-reg-reg/mem ((op ,op)) ,@(when printer (list printer)))
875 (x66-ext-reg-reg/mem ((op ,op)) ,@(when printer (list printer)))
876 (rex-ext-reg-reg/mem ((op ,op)) ,@(when printer (list printer)))
877 (x66-rex-ext-reg-reg/mem ((op ,op)) ,@(when printer (list printer))))))
879 (sb!disassem:define-instruction-format (ext-reg-reg/mem-no-width 24
881 `(:name :tab reg ", " reg/mem))
882 (prefix :field (byte 8 0) :value #b00001111)
883 (op :field (byte 8 8))
884 (reg/mem :fields (list (byte 2 22) (byte 3 16))
886 (reg :field (byte 3 19) :type 'reg))
888 (sb!disassem:define-instruction-format (rex-ext-reg-reg/mem-no-width 32
890 `(:name :tab reg ", " reg/mem))
891 (rex :field (byte 4 4) :value #b0100)
892 (wrxb :field (byte 4 0) :type 'wrxb)
893 (prefix :field (byte 8 8) :value #b00001111)
894 (op :field (byte 8 16))
895 (reg/mem :fields (list (byte 2 30) (byte 3 24))
897 (reg :field (byte 3 27) :type 'reg))
899 (sb!disassem:define-instruction-format (ext-reg/mem-no-width 24
901 `(:name :tab reg/mem))
902 (prefix :field (byte 8 0) :value #b00001111)
903 (op :fields (list (byte 8 8) (byte 3 19)))
904 (reg/mem :fields (list (byte 2 22) (byte 3 16))
907 (sb!disassem:define-instruction-format (rex-ext-reg/mem-no-width 32
909 `(:name :tab reg/mem))
910 (rex :field (byte 4 4) :value #b0100)
911 (wrxb :field (byte 4 0) :type 'wrxb)
912 (prefix :field (byte 8 8) :value #b00001111)
913 (op :fields (list (byte 8 16) (byte 3 27)))
914 (reg/mem :fields (list (byte 2 30) (byte 3 24))
917 ;;; reg-no-width with #x0f prefix
918 (sb!disassem:define-instruction-format (ext-reg-no-width 16
919 :default-printer '(:name :tab reg))
920 (prefix :field (byte 8 0) :value #b00001111)
921 (op :field (byte 5 11))
922 (reg :field (byte 3 8) :type 'reg-b))
924 ;;; Same as reg/mem, but with a prefix of #b00001111
925 (sb!disassem:define-instruction-format (ext-reg/mem 24
926 :default-printer '(:name :tab reg/mem))
927 (prefix :field (byte 8 0) :value #b00001111)
928 (op :fields (list (byte 7 9) (byte 3 19)))
929 (width :field (byte 1 8) :type 'width)
930 (reg/mem :fields (list (byte 2 22) (byte 3 16))
931 :type 'sized-reg/mem)
935 (sb!disassem:define-instruction-format (ext-reg/mem-imm 24
936 :include 'ext-reg/mem
938 '(:name :tab reg/mem ", " imm))
939 (imm :type 'signed-imm-data))
941 ;;;; XMM instructions
943 ;;; All XMM instructions use an extended opcode (#x0F as the first
944 ;;; opcode byte). Therefore in the following "EXT" in the name of the
945 ;;; instruction formats refers to the formats that have an additional
946 ;;; prefix (#x66, #xF2 or #xF3).
948 ;;; Instructions having an XMM register as the destination operand
949 ;;; and an XMM register or a memory location as the source operand.
950 ;;; The size of the operands is implicitly given by the instruction.
951 (sb!disassem:define-instruction-format (xmm-xmm/mem 24
953 '(:name :tab reg ", " reg/mem))
954 (x0f :field (byte 8 0) :value #x0f)
955 (op :field (byte 8 8))
956 (reg/mem :fields (list (byte 2 22) (byte 3 16))
958 (reg :field (byte 3 19) :type 'xmmreg)
962 (sb!disassem:define-instruction-format (rex-xmm-xmm/mem 32
964 '(:name :tab reg ", " reg/mem))
965 (rex :field (byte 4 4) :value #b0100)
966 (wrxb :field (byte 4 0) :type 'wrxb)
967 (x0f :field (byte 8 8) :value #x0f)
968 (op :field (byte 8 16))
969 (reg/mem :fields (list (byte 2 30) (byte 3 24))
971 (reg :field (byte 3 27) :type 'xmmreg)
974 (sb!disassem:define-instruction-format (ext-xmm-xmm/mem 32
976 '(:name :tab reg ", " reg/mem))
977 (prefix :field (byte 8 0))
978 (x0f :field (byte 8 8) :value #x0f)
979 (op :field (byte 8 16))
980 (reg/mem :fields (list (byte 2 30) (byte 3 24))
982 (reg :field (byte 3 27) :type 'xmmreg)
985 (sb!disassem:define-instruction-format (ext-rex-xmm-xmm/mem 40
987 '(:name :tab reg ", " reg/mem))
988 (prefix :field (byte 8 0))
989 (rex :field (byte 4 12) :value #b0100)
990 (wrxb :field (byte 4 8) :type 'wrxb)
991 (x0f :field (byte 8 16) :value #x0f)
992 (op :field (byte 8 24))
993 (reg/mem :fields (list (byte 2 38) (byte 3 32))
995 (reg :field (byte 3 35) :type 'xmmreg)
998 ;;; Same as xmm-xmm/mem etc., but with direction bit.
1000 (sb!disassem:define-instruction-format (ext-xmm-xmm/mem-dir 32
1001 :include 'ext-xmm-xmm/mem
1005 ,(swap-if 'dir 'reg ", " 'reg/mem)))
1006 (op :field (byte 7 17))
1007 (dir :field (byte 1 16)))
1009 (sb!disassem:define-instruction-format (ext-rex-xmm-xmm/mem-dir 40
1010 :include 'ext-rex-xmm-xmm/mem
1014 ,(swap-if 'dir 'reg ", " 'reg/mem)))
1015 (op :field (byte 7 25))
1016 (dir :field (byte 1 24)))
1018 ;;; Instructions having an XMM register as one operand
1019 ;;; and a constant (unsigned) byte as the other.
1021 (sb!disassem:define-instruction-format (ext-xmm-imm 32
1023 '(:name :tab reg/mem ", " imm))
1024 (prefix :field (byte 8 0))
1025 (x0f :field (byte 8 8) :value #x0f)
1026 (op :field (byte 8 16))
1027 (/i :field (byte 3 27))
1028 (b11 :field (byte 2 30) :value #b11)
1029 (reg/mem :field (byte 3 24)
1031 (imm :type 'imm-byte))
1033 (sb!disassem:define-instruction-format (ext-rex-xmm-imm 40
1035 '(:name :tab reg/mem ", " imm))
1036 (prefix :field (byte 8 0))
1037 (rex :field (byte 4 12) :value #b0100)
1038 (wrxb :field (byte 4 8) :type 'wrxb)
1039 (x0f :field (byte 8 16) :value #x0f)
1040 (op :field (byte 8 24))
1041 (/i :field (byte 3 35))
1042 (b11 :field (byte 2 38) :value #b11)
1043 (reg/mem :field (byte 3 32)
1045 (imm :type 'imm-byte))
1047 ;;; Instructions having an XMM register as one operand and a general-
1048 ;;; -purpose register or a memory location as the other operand.
1050 (sb!disassem:define-instruction-format (xmm-reg/mem 24
1052 '(:name :tab reg ", " reg/mem))
1053 (x0f :field (byte 8 0) :value #x0f)
1054 (op :field (byte 8 8))
1055 (reg/mem :fields (list (byte 2 22) (byte 3 16))
1056 :type 'sized-reg/mem)
1057 (reg :field (byte 3 19) :type 'xmmreg))
1059 (sb!disassem:define-instruction-format (rex-xmm-reg/mem 32
1061 '(:name :tab reg ", " reg/mem))
1062 (rex :field (byte 4 4) :value #b0100)
1063 (wrxb :field (byte 4 0) :type 'wrxb)
1064 (x0f :field (byte 8 8) :value #x0f)
1065 (op :field (byte 8 16))
1066 (reg/mem :fields (list (byte 2 30) (byte 3 24))
1067 :type 'sized-reg/mem)
1068 (reg :field (byte 3 27) :type 'xmmreg))
1070 (sb!disassem:define-instruction-format (ext-xmm-reg/mem 32
1072 '(:name :tab reg ", " reg/mem))
1073 (prefix :field (byte 8 0))
1074 (x0f :field (byte 8 8) :value #x0f)
1075 (op :field (byte 8 16))
1076 (reg/mem :fields (list (byte 2 30) (byte 3 24))
1077 :type 'sized-reg/mem)
1078 (reg :field (byte 3 27) :type 'xmmreg))
1080 (sb!disassem:define-instruction-format (ext-rex-xmm-reg/mem 40
1082 '(:name :tab reg ", " reg/mem))
1083 (prefix :field (byte 8 0))
1084 (rex :field (byte 4 12) :value #b0100)
1085 (wrxb :field (byte 4 8) :type 'wrxb)
1086 (x0f :field (byte 8 16) :value #x0f)
1087 (op :field (byte 8 24))
1088 (reg/mem :fields (list (byte 2 38) (byte 3 32))
1089 :type 'sized-reg/mem)
1090 (reg :field (byte 3 35) :type 'xmmreg))
1092 ;;; Instructions having a general-purpose register as one operand and an
1093 ;;; XMM register or a memory location as the other operand.
1095 (sb!disassem:define-instruction-format (reg-xmm/mem 24
1097 '(:name :tab reg ", " reg/mem))
1098 (x0f :field (byte 8 0) :value #x0f)
1099 (op :field (byte 8 8))
1100 (reg/mem :fields (list (byte 2 22) (byte 3 16))
1101 :type 'sized-xmmreg/mem)
1102 (reg :field (byte 3 19) :type 'reg))
1104 (sb!disassem:define-instruction-format (rex-reg-xmm/mem 32
1106 '(:name :tab reg ", " reg/mem))
1107 (rex :field (byte 4 4) :value #b0100)
1108 (wrxb :field (byte 4 0) :type 'wrxb)
1109 (x0f :field (byte 8 8) :value #x0f)
1110 (op :field (byte 8 16))
1111 (reg/mem :fields (list (byte 2 30) (byte 3 24))
1112 :type 'sized-xmmreg/mem)
1113 (reg :field (byte 3 27) :type 'reg))
1115 (sb!disassem:define-instruction-format (ext-reg-xmm/mem 32
1117 '(:name :tab reg ", " reg/mem))
1118 (prefix :field (byte 8 0))
1119 (x0f :field (byte 8 8) :value #x0f)
1120 (op :field (byte 8 16))
1121 (reg/mem :fields (list (byte 2 30) (byte 3 24))
1122 :type 'sized-xmmreg/mem)
1123 (reg :field (byte 3 27) :type 'reg))
1125 (sb!disassem:define-instruction-format (ext-rex-reg-xmm/mem 40
1127 '(:name :tab reg ", " reg/mem))
1128 (prefix :field (byte 8 0))
1129 (rex :field (byte 4 12) :value #b0100)
1130 (wrxb :field (byte 4 8) :type 'wrxb)
1131 (x0f :field (byte 8 16) :value #x0f)
1132 (op :field (byte 8 24))
1133 (reg/mem :fields (list (byte 2 38) (byte 3 32))
1134 :type 'sized-xmmreg/mem)
1135 (reg :field (byte 3 35) :type 'reg))
1137 ;; XMM comparison instruction
1139 (eval-when (:compile-toplevel :load-toplevel :execute)
1140 (defparameter *sse-conditions* #(:eq :lt :le :unord :neq :nlt :nle :ord)))
1142 (sb!disassem:define-arg-type sse-condition-code
1143 ;; Inherit the prefilter from IMM-BYTE to READ-SUFFIX the byte.
1145 :printer *sse-conditions*)
1147 (sb!disassem:define-instruction-format (string-op 8
1149 :default-printer '(:name width)))
1151 (sb!disassem:define-instruction-format (rex-string-op 16
1152 :include 'rex-simple
1153 :default-printer '(:name width)))
1155 (sb!disassem:define-instruction-format (short-cond-jump 16)
1156 (op :field (byte 4 4))
1157 (cc :field (byte 4 0) :type 'condition-code)
1158 (label :field (byte 8 8) :type 'displacement))
1160 (sb!disassem:define-instruction-format (short-jump 16
1161 :default-printer '(:name :tab label))
1162 (const :field (byte 4 4) :value #b1110)
1163 (op :field (byte 4 0))
1164 (label :field (byte 8 8) :type 'displacement))
1166 (sb!disassem:define-instruction-format (near-cond-jump 16)
1167 (op :fields (list (byte 8 0) (byte 4 12)) :value '(#b00001111 #b1000))
1168 (cc :field (byte 4 8) :type 'condition-code)
1169 ;; The disassembler currently doesn't let you have an instruction > 32 bits
1170 ;; long, so we fake it by using a prefilter to read the offset.
1171 (label :type 'displacement
1172 :prefilter (lambda (value dstate)
1173 (declare (ignore value)) ; always nil anyway
1174 (sb!disassem:read-signed-suffix 32 dstate))))
1176 (sb!disassem:define-instruction-format (near-jump 8
1177 :default-printer '(:name :tab label))
1178 (op :field (byte 8 0))
1179 ;; The disassembler currently doesn't let you have an instruction > 32 bits
1180 ;; long, so we fake it by using a prefilter to read the address.
1181 (label :type 'displacement
1182 :prefilter (lambda (value dstate)
1183 (declare (ignore value)) ; always nil anyway
1184 (sb!disassem:read-signed-suffix 32 dstate))))
1187 (sb!disassem:define-instruction-format (cond-set 24
1188 :default-printer '('set cc :tab reg/mem))
1189 (prefix :field (byte 8 0) :value #b00001111)
1190 (op :field (byte 4 12) :value #b1001)
1191 (cc :field (byte 4 8) :type 'condition-code)
1192 (reg/mem :fields (list (byte 2 22) (byte 3 16))
1193 :type 'sized-byte-reg/mem)
1194 (reg :field (byte 3 19) :value #b000))
1196 (sb!disassem:define-instruction-format (cond-move 24
1198 '('cmov cc :tab reg ", " reg/mem))
1199 (prefix :field (byte 8 0) :value #b00001111)
1200 (op :field (byte 4 12) :value #b0100)
1201 (cc :field (byte 4 8) :type 'condition-code)
1202 (reg/mem :fields (list (byte 2 22) (byte 3 16))
1204 (reg :field (byte 3 19) :type 'reg))
1206 (sb!disassem:define-instruction-format (rex-cond-move 32
1208 '('cmov cc :tab reg ", " reg/mem))
1209 (rex :field (byte 4 4) :value #b0100)
1210 (wrxb :field (byte 4 0) :type 'wrxb)
1211 (prefix :field (byte 8 8) :value #b00001111)
1212 (op :field (byte 4 20) :value #b0100)
1213 (cc :field (byte 4 16) :type 'condition-code)
1214 (reg/mem :fields (list (byte 2 30) (byte 3 24))
1216 (reg :field (byte 3 27) :type 'reg))
1218 (sb!disassem:define-instruction-format (enter-format 32
1219 :default-printer '(:name
1221 (:unless (:constant 0)
1223 (op :field (byte 8 0))
1224 (disp :field (byte 16 8))
1225 (level :field (byte 8 24)))
1227 ;;; Single byte instruction with an immediate byte argument.
1228 (sb!disassem:define-instruction-format (byte-imm 16
1229 :default-printer '(:name :tab code))
1230 (op :field (byte 8 0))
1231 (code :field (byte 8 8)))
1233 ;;; Two byte instruction with an immediate byte argument.
1235 (sb!disassem:define-instruction-format (word-imm 24
1236 :default-printer '(:name :tab code))
1237 (op :field (byte 16 0))
1238 (code :field (byte 8 16)))
1241 ;;;; primitive emitters
1243 (define-bitfield-emitter emit-word 16
1246 (define-bitfield-emitter emit-dword 32
1249 ;;; Most uses of dwords are as displacements or as immediate values in
1250 ;;; 64-bit operations. In these cases they are sign-extended to 64 bits.
1251 ;;; EMIT-DWORD is unsuitable there because it accepts values of type
1252 ;;; (OR (SIGNED-BYTE 32) (UNSIGNED-BYTE 32)), so we provide a more
1253 ;;; restricted emitter here.
1254 (defun emit-signed-dword (segment value)
1255 (declare (type segment segment)
1256 (type (signed-byte 32) value))
1257 (declare (inline emit-dword))
1258 (emit-dword segment value))
1260 (define-bitfield-emitter emit-qword 64
1263 (define-bitfield-emitter emit-byte-with-reg 8
1264 (byte 5 3) (byte 3 0))
1266 (define-bitfield-emitter emit-mod-reg-r/m-byte 8
1267 (byte 2 6) (byte 3 3) (byte 3 0))
1269 (define-bitfield-emitter emit-sib-byte 8
1270 (byte 2 6) (byte 3 3) (byte 3 0))
1272 (define-bitfield-emitter emit-rex-byte 8
1273 (byte 4 4) (byte 1 3) (byte 1 2) (byte 1 1) (byte 1 0))
1279 (defun emit-absolute-fixup (segment fixup &optional quad-p)
1280 (note-fixup segment (if quad-p :absolute64 :absolute) fixup)
1281 (let ((offset (fixup-offset fixup)))
1282 (if (label-p offset)
1283 (emit-back-patch segment
1285 (lambda (segment posn)
1286 (declare (ignore posn))
1287 (let ((val (- (+ (component-header-length)
1288 (or (label-position offset)
1290 other-pointer-lowtag)))
1292 (emit-qword segment val)
1293 (emit-signed-dword segment val)))))
1295 (emit-qword segment (or offset 0))
1296 (emit-signed-dword segment (or offset 0))))))
1298 (defun emit-relative-fixup (segment fixup)
1299 (note-fixup segment :relative fixup)
1300 (emit-signed-dword segment (or (fixup-offset fixup) 0)))
1303 ;;;; the effective-address (ea) structure
1305 (defun reg-tn-encoding (tn)
1306 (declare (type tn tn))
1307 ;; ea only has space for three bits of register number: regs r8
1308 ;; and up are selected by a REX prefix byte which caller is responsible
1309 ;; for having emitted where necessary already
1310 (ecase (sb-name (sc-sb (tn-sc tn)))
1312 (let ((offset (mod (tn-offset tn) 16)))
1313 (logior (ash (logand offset 1) 2)
1316 (mod (tn-offset tn) 8))))
1318 (defstruct (ea (:constructor make-ea (size &key base index scale disp))
1320 ;; note that we can represent an EA with a QWORD size, but EMIT-EA
1321 ;; can't actually emit it on its own: caller also needs to emit REX
1323 (size nil :type (member :byte :word :dword :qword))
1324 (base nil :type (or tn null))
1325 (index nil :type (or tn null))
1326 (scale 1 :type (member 1 2 4 8))
1327 (disp 0 :type (or (unsigned-byte 32) (signed-byte 32) fixup)))
1328 (def!method print-object ((ea ea) stream)
1329 (cond ((or *print-escape* *print-readably*)
1330 (print-unreadable-object (ea stream :type t)
1332 "~S~@[ base=~S~]~@[ index=~S~]~@[ scale=~S~]~@[ disp=~S~]"
1336 (let ((scale (ea-scale ea)))
1337 (if (= scale 1) nil scale))
1340 (format stream "~A PTR [" (symbol-name (ea-size ea)))
1342 (write-string (sb!c::location-print-name (ea-base ea)) stream)
1344 (write-string "+" stream)))
1346 (write-string (sb!c::location-print-name (ea-index ea)) stream))
1347 (unless (= (ea-scale ea) 1)
1348 (format stream "*~A" (ea-scale ea)))
1349 (typecase (ea-disp ea)
1352 (format stream "~@D" (ea-disp ea)))
1354 (format stream "+~A" (ea-disp ea))))
1355 (write-char #\] stream))))
1357 (defun emit-constant-tn-rip (segment constant-tn reg remaining-bytes)
1358 ;; AMD64 doesn't currently have a code object register to use as a
1359 ;; base register for constant access. Instead we use RIP-relative
1360 ;; addressing. The offset from the SIMPLE-FUN-HEADER to the instruction
1361 ;; is passed to the backpatch callback. In addition we need the offset
1362 ;; from the start of the function header to the slot in the CODE-HEADER
1363 ;; that stores the constant. Since we don't know where the code header
1364 ;; starts, instead count backwards from the function header.
1365 (let* ((2comp (component-info *component-being-compiled*))
1366 (constants (ir2-component-constants 2comp))
1367 (len (length constants))
1368 ;; Both CODE-HEADER and SIMPLE-FUN-HEADER are 16-byte aligned.
1369 ;; If there are an even amount of constants, there will be
1370 ;; an extra qword of padding before the function header, which
1371 ;; needs to be adjusted for. XXX: This will break if new slots
1372 ;; are added to the code header.
1373 (offset (* (- (+ len (if (evenp len)
1376 (tn-offset constant-tn))
1378 ;; RIP-relative addressing
1379 (emit-mod-reg-r/m-byte segment #b00 reg #b101)
1380 (emit-back-patch segment
1382 (lambda (segment posn)
1383 ;; The addressing is relative to end of instruction,
1384 ;; i.e. the end of this dword. Hence the + 4.
1385 (emit-signed-dword segment
1386 (+ 4 remaining-bytes
1387 (- (+ offset posn)))))))
1390 (defun emit-label-rip (segment fixup reg remaining-bytes)
1391 (let ((label (fixup-offset fixup)))
1392 ;; RIP-relative addressing
1393 (emit-mod-reg-r/m-byte segment #b00 reg #b101)
1394 (emit-back-patch segment
1396 (lambda (segment posn)
1397 (emit-signed-dword segment
1398 (- (label-position label)
1399 (+ posn 4 remaining-bytes))))))
1402 (defun emit-ea (segment thing reg &key allow-constants (remaining-bytes 0))
1405 ;; this would be eleganter if we had a function that would create
1407 (ecase (sb-name (sc-sb (tn-sc thing)))
1408 ((registers float-registers)
1409 (emit-mod-reg-r/m-byte segment #b11 reg (reg-tn-encoding thing)))
1411 ;; Convert stack tns into an index off RBP.
1412 (let ((disp (frame-byte-offset (tn-offset thing))))
1413 (cond ((<= -128 disp 127)
1414 (emit-mod-reg-r/m-byte segment #b01 reg #b101)
1415 (emit-byte segment disp))
1417 (emit-mod-reg-r/m-byte segment #b10 reg #b101)
1418 (emit-signed-dword segment disp)))))
1420 (unless allow-constants
1423 "Constant TNs can only be directly used in MOV, PUSH, and CMP."))
1424 (emit-constant-tn-rip segment thing reg remaining-bytes))))
1426 (let* ((base (ea-base thing))
1427 (index (ea-index thing))
1428 (scale (ea-scale thing))
1429 (disp (ea-disp thing))
1430 (mod (cond ((or (null base)
1432 (not (= (reg-tn-encoding base) #b101))))
1434 ((and (fixnump disp) (<= -128 disp 127))
1438 (r/m (cond (index #b100)
1440 (t (reg-tn-encoding base)))))
1441 (when (and (fixup-p disp)
1442 (label-p (fixup-offset disp)))
1445 (return-from emit-ea (emit-ea segment disp reg
1446 :allow-constants allow-constants
1447 :remaining-bytes remaining-bytes)))
1448 (when (and (= mod 0) (= r/m #b101))
1449 ;; this is rip-relative in amd64, so we'll use a sib instead
1450 (setf r/m #b100 scale 1))
1451 (emit-mod-reg-r/m-byte segment mod reg r/m)
1453 (let ((ss (1- (integer-length scale)))
1454 (index (if (null index)
1456 (let ((index (reg-tn-encoding index)))
1458 (error "can't index off of ESP")
1460 (base (if (null base)
1462 (reg-tn-encoding base))))
1463 (emit-sib-byte segment ss index base)))
1465 (emit-byte segment disp))
1466 ((or (= mod #b10) (null base))
1468 (emit-absolute-fixup segment disp)
1469 (emit-signed-dword segment disp))))))
1471 (typecase (fixup-offset thing)
1473 (emit-label-rip segment thing reg remaining-bytes))
1475 (emit-mod-reg-r/m-byte segment #b00 reg #b100)
1476 (emit-sib-byte segment 0 #b100 #b101)
1477 (emit-absolute-fixup segment thing))))))
1479 (defun byte-reg-p (thing)
1481 (eq (sb-name (sc-sb (tn-sc thing))) 'registers)
1482 (member (sc-name (tn-sc thing)) *byte-sc-names*)
1485 (defun byte-ea-p (thing)
1487 (ea (eq (ea-size thing) :byte))
1489 (and (member (sc-name (tn-sc thing)) *byte-sc-names*) t))
1492 (defun word-reg-p (thing)
1494 (eq (sb-name (sc-sb (tn-sc thing))) 'registers)
1495 (member (sc-name (tn-sc thing)) *word-sc-names*)
1498 (defun word-ea-p (thing)
1500 (ea (eq (ea-size thing) :word))
1501 (tn (and (member (sc-name (tn-sc thing)) *word-sc-names*) t))
1504 (defun dword-reg-p (thing)
1506 (eq (sb-name (sc-sb (tn-sc thing))) 'registers)
1507 (member (sc-name (tn-sc thing)) *dword-sc-names*)
1510 (defun dword-ea-p (thing)
1512 (ea (eq (ea-size thing) :dword))
1514 (and (member (sc-name (tn-sc thing)) *dword-sc-names*) t))
1517 (defun qword-reg-p (thing)
1519 (eq (sb-name (sc-sb (tn-sc thing))) 'registers)
1520 (member (sc-name (tn-sc thing)) *qword-sc-names*)
1523 (defun qword-ea-p (thing)
1525 (ea (eq (ea-size thing) :qword))
1527 (and (member (sc-name (tn-sc thing)) *qword-sc-names*) t))
1530 ;;; Return true if THING is a general-purpose register TN.
1531 (defun register-p (thing)
1533 (eq (sb-name (sc-sb (tn-sc thing))) 'registers)))
1535 (defun accumulator-p (thing)
1536 (and (register-p thing)
1537 (= (tn-offset thing) 0)))
1539 ;;; Return true if THING is an XMM register TN.
1540 (defun xmm-register-p (thing)
1542 (eq (sb-name (sc-sb (tn-sc thing))) 'float-registers)))
1547 (def!constant +operand-size-prefix-byte+ #b01100110)
1549 (defun maybe-emit-operand-size-prefix (segment size)
1550 (unless (or (eq size :byte)
1551 (eq size :qword) ; REX prefix handles this
1552 (eq size +default-operand-size+))
1553 (emit-byte segment +operand-size-prefix-byte+)))
1555 ;;; A REX prefix must be emitted if at least one of the following
1556 ;;; conditions is true:
1557 ;; 1. The operand size is :QWORD and the default operand size of the
1558 ;; instruction is not :QWORD.
1559 ;;; 2. The instruction references an extended register.
1560 ;;; 3. The instruction references one of the byte registers SIL, DIL,
1563 ;;; Emit a REX prefix if necessary. OPERAND-SIZE is used to determine
1564 ;;; whether to set REX.W. Callers pass it explicitly as :DO-NOT-SET if
1565 ;;; this should not happen, for example because the instruction's
1566 ;;; default operand size is qword. R, X and B are NIL or TNs specifying
1567 ;;; registers the encodings of which are extended with the REX.R, REX.X
1568 ;;; and REX.B bit, respectively. To determine whether one of the byte
1569 ;;; registers is used that can only be accessed using a REX prefix, we
1570 ;;; need only to test R and B, because X is only used for the index
1571 ;;; register of an effective address and therefore never byte-sized.
1572 ;;; For R we can avoid to calculate the size of the TN because it is
1573 ;;; always OPERAND-SIZE. The size of B must be calculated here because
1574 ;;; B can be address-sized (if it is the base register of an effective
1575 ;;; address), of OPERAND-SIZE (if the instruction operates on two
1576 ;;; registers) or of some different size (in the instructions that
1577 ;;; combine arguments of different sizes: MOVZX, MOVSX, MOVSXD and
1578 ;;; several SSE instructions, e.g. CVTSD2SI). We don't distinguish
1579 ;;; between general-purpose and floating point registers for this cause
1580 ;;; because only general-purpose registers can be byte-sized at all.
1581 (defun maybe-emit-rex-prefix (segment operand-size r x b)
1582 (declare (type (member nil :byte :word :dword :qword :do-not-set)
1584 (type (or null tn) r x b))
1586 (if (and r (> (tn-offset r)
1587 ;; offset of r8 is 16, offset of xmm8 is 8
1588 (if (eq (sb-name (sc-sb (tn-sc r)))
1595 ;; Assuming R is a TN describing a general-purpose
1596 ;; register, return true if it references register
1598 (<= 8 (tn-offset r) 15)))
1599 (let ((rex-w (if (eq operand-size :qword) 1 0))
1603 (when (or (not (zerop (logior rex-w rex-r rex-x rex-b)))
1605 (eq operand-size :byte)
1608 (eq (operand-size b) :byte)
1610 (emit-rex-byte segment #b0100 rex-w rex-r rex-x rex-b)))))
1612 ;;; Emit a REX prefix if necessary. The operand size is determined from
1613 ;;; THING or can be overwritten by OPERAND-SIZE. This and REG are always
1614 ;;; passed to MAYBE-EMIT-REX-PREFIX. Additionally, if THING is an EA we
1615 ;;; pass its index and base registers, if it is a register TN, we pass
1617 ;;; In contrast to EMIT-EA above, neither stack TNs nor fixups need to
1618 ;;; be treated specially here: If THING is a stack TN, neither it nor
1619 ;;; any of its components are passed to MAYBE-EMIT-REX-PREFIX which
1620 ;;; works correctly because stack references always use RBP as the base
1621 ;;; register and never use an index register so no extended registers
1622 ;;; need to be accessed. Fixups are assembled using an addressing mode
1623 ;;; of displacement-only or RIP-plus-displacement (see EMIT-EA), so may
1624 ;;; not reference an extended register. The displacement-only addressing
1625 ;;; mode requires that REX.X is 0, which is ensured here.
1626 (defun maybe-emit-rex-for-ea (segment thing reg &key operand-size)
1627 (declare (type (or ea tn fixup) thing)
1628 (type (or null tn) reg)
1629 (type (member nil :byte :word :dword :qword :do-not-set)
1631 (let ((ea-p (ea-p thing)))
1632 (maybe-emit-rex-prefix segment
1633 (or operand-size (operand-size thing))
1635 (and ea-p (ea-index thing))
1636 (cond (ea-p (ea-base thing))
1638 (member (sb-name (sc-sb (tn-sc thing)))
1639 '(float-registers registers)))
1643 (defun operand-size (thing)
1646 ;; FIXME: might as well be COND instead of having to use #. readmacro
1647 ;; to hack up the code
1648 (case (sc-name (tn-sc thing))
1657 ;; added by jrd: float-registers is a separate size (?)
1658 ;; The only place in the code where we are called with THING
1659 ;; being a float-register is in MAYBE-EMIT-REX-PREFIX when it
1660 ;; checks whether THING is a byte register. Thus our result in
1661 ;; these cases could as well be :dword and :qword. I leave it as
1662 ;; :float and :double which is more likely to trigger an aver
1663 ;; instead of silently doing the wrong thing in case this
1664 ;; situation should change. Lutz Euler, 2005-10-23.
1667 (#.*double-sc-names*
1669 (#.*complex-sc-names*
1672 (error "can't tell the size of ~S ~S" thing (sc-name (tn-sc thing))))))
1676 ;; GNA. Guess who spelt "flavor" correctly first time round?
1677 ;; There's a strong argument in my mind to change all uses of
1678 ;; "flavor" to "kind": and similarly with some misguided uses of
1679 ;; "type" here and there. -- CSR, 2005-01-06.
1680 (case (fixup-flavor thing)
1681 ((:foreign-dataref) :qword)))
1685 (defun matching-operand-size (dst src)
1686 (let ((dst-size (operand-size dst))
1687 (src-size (operand-size src)))
1690 (if (eq dst-size src-size)
1692 (error "size mismatch: ~S is a ~S and ~S is a ~S."
1693 dst dst-size src src-size))
1697 (error "can't tell the size of either ~S or ~S" dst src)))))
1699 ;;; Except in a very few cases (MOV instructions A1, A3 and B8 - BF)
1700 ;;; we expect dword data bytes even when 64 bit work is being done.
1701 ;;; But A1 and A3 are currently unused and B8 - BF use EMIT-QWORD
1702 ;;; directly, so we emit all quad constants as dwords, additionally
1703 ;;; making sure that they survive the sign-extension to 64 bits
1705 (defun emit-sized-immediate (segment size value)
1708 (emit-byte segment value))
1710 (emit-word segment value))
1712 (emit-dword segment value))
1714 (emit-signed-dword segment value))))
1716 ;;;; general data transfer
1718 ;;; This is the part of the MOV instruction emitter that does moving
1719 ;;; of an immediate value into a qword register. We go to some length
1720 ;;; to achieve the shortest possible encoding.
1721 (defun emit-immediate-move-to-qword-register (segment dst src)
1722 (declare (type integer src))
1723 (cond ((typep src '(unsigned-byte 32))
1724 ;; We use the B8 - BF encoding with an operand size of 32 bits
1725 ;; here and let the implicit zero-extension fill the upper half
1726 ;; of the 64-bit destination register. Instruction size: five
1727 ;; or six bytes. (A REX prefix will be emitted only if the
1728 ;; destination is an extended register.)
1729 (maybe-emit-rex-prefix segment :dword nil nil dst)
1730 (emit-byte-with-reg segment #b10111 (reg-tn-encoding dst))
1731 (emit-dword segment src))
1733 (maybe-emit-rex-prefix segment :qword nil nil dst)
1734 (cond ((typep src '(signed-byte 32))
1735 ;; Use the C7 encoding that takes a 32-bit immediate and
1736 ;; sign-extends it to 64 bits. Instruction size: seven
1738 (emit-byte segment #b11000111)
1739 (emit-mod-reg-r/m-byte segment #b11 #b000
1740 (reg-tn-encoding dst))
1741 (emit-signed-dword segment src))
1742 ((<= (- (expt 2 64) (expt 2 31))
1745 ;; This triggers on positive integers of 64 bits length
1746 ;; with the most significant 33 bits being 1. We use the
1747 ;; same encoding as in the previous clause.
1748 (emit-byte segment #b11000111)
1749 (emit-mod-reg-r/m-byte segment #b11 #b000
1750 (reg-tn-encoding dst))
1751 (emit-signed-dword segment (- src (expt 2 64))))
1753 ;; We need a full 64-bit immediate. Instruction size:
1755 (emit-byte-with-reg segment #b10111 (reg-tn-encoding dst))
1756 (emit-qword segment src))))))
1758 (define-instruction mov (segment dst src)
1759 ;; immediate to register
1760 (:printer reg ((op #b1011) (imm nil :type 'signed-imm-data))
1761 '(:name :tab reg ", " imm))
1762 (:printer rex-reg ((op #b1011) (imm nil :type 'signed-imm-data-upto-qword))
1763 '(:name :tab reg ", " imm))
1764 ;; absolute mem to/from accumulator
1765 (:printer simple-dir ((op #b101000) (imm nil :type 'imm-addr))
1766 `(:name :tab ,(swap-if 'dir 'accum ", " '("[" imm "]"))))
1767 ;; register to/from register/memory
1768 (:printer reg-reg/mem-dir ((op #b100010)))
1769 (:printer rex-reg-reg/mem-dir ((op #b100010)))
1770 (:printer x66-reg-reg/mem-dir ((op #b100010)))
1771 (:printer x66-rex-reg-reg/mem-dir ((op #b100010)))
1772 ;; immediate to register/memory
1773 (:printer reg/mem-imm ((op '(#b1100011 #b000))))
1774 (:printer rex-reg/mem-imm ((op '(#b1100011 #b000))))
1777 (let ((size (matching-operand-size dst src)))
1778 (maybe-emit-operand-size-prefix segment size)
1779 (cond ((register-p dst)
1780 (cond ((integerp src)
1781 (cond ((eq size :qword)
1782 (emit-immediate-move-to-qword-register segment
1785 (maybe-emit-rex-prefix segment size nil nil dst)
1786 (emit-byte-with-reg segment
1790 (reg-tn-encoding dst))
1791 (emit-sized-immediate segment size src))))
1793 (maybe-emit-rex-for-ea segment src dst)
1798 (emit-ea segment src (reg-tn-encoding dst) :allow-constants t))))
1800 ;; C7 only deals with 32 bit immediates even if the
1801 ;; destination is a 64-bit location. The value is
1802 ;; sign-extended in this case.
1803 (maybe-emit-rex-for-ea segment dst nil)
1804 (emit-byte segment (if (eq size :byte) #b11000110 #b11000111))
1805 (emit-ea segment dst #b000)
1806 (emit-sized-immediate segment size src))
1808 (maybe-emit-rex-for-ea segment dst src)
1809 (emit-byte segment (if (eq size :byte) #b10001000 #b10001001))
1810 (emit-ea segment dst (reg-tn-encoding src)))
1812 ;; Generally we can't MOV a fixupped value into an EA, since
1813 ;; MOV on non-registers can only take a 32-bit immediate arg.
1814 ;; Make an exception for :FOREIGN fixups (pretty much just
1815 ;; the runtime asm, since other foreign calls go through the
1816 ;; the linkage table) and for linkage table references, since
1817 ;; these should always end up in low memory.
1818 (aver (or (eq (fixup-flavor src) :foreign)
1819 (eq (fixup-flavor src) :foreign-dataref)
1820 (eq (ea-size dst) :dword)))
1821 (maybe-emit-rex-for-ea segment dst nil)
1822 (emit-byte segment #b11000111)
1823 (emit-ea segment dst #b000)
1824 (emit-absolute-fixup segment src))
1826 (error "bogus arguments to MOV: ~S ~S" dst src))))))
1828 (defun emit-move-with-extension (segment dst src signed-p)
1829 (aver (register-p dst))
1830 (let ((dst-size (operand-size dst))
1831 (src-size (operand-size src))
1832 (opcode (if signed-p #b10111110 #b10110110)))
1835 (aver (eq src-size :byte))
1836 (maybe-emit-operand-size-prefix segment :word)
1837 ;; REX prefix is needed if SRC is SIL, DIL, SPL or BPL.
1838 (maybe-emit-rex-for-ea segment src dst :operand-size :word)
1839 (emit-byte segment #b00001111)
1840 (emit-byte segment opcode)
1841 (emit-ea segment src (reg-tn-encoding dst)))
1845 (maybe-emit-rex-for-ea segment src dst :operand-size dst-size)
1846 (emit-byte segment #b00001111)
1847 (emit-byte segment opcode)
1848 (emit-ea segment src (reg-tn-encoding dst)))
1850 (maybe-emit-rex-for-ea segment src dst :operand-size dst-size)
1851 (emit-byte segment #b00001111)
1852 (emit-byte segment (logior opcode 1))
1853 (emit-ea segment src (reg-tn-encoding dst)))
1855 (aver (eq dst-size :qword))
1856 ;; dst is in reg, src is in modrm
1857 (let ((ea-p (ea-p src)))
1858 (maybe-emit-rex-prefix segment (if signed-p :qword :dword) dst
1859 (and ea-p (ea-index src))
1860 (cond (ea-p (ea-base src))
1863 (emit-byte segment (if signed-p #x63 #x8b)) ;movsxd or straight mov
1864 ;;(emit-byte segment opcode)
1865 (emit-ea segment src (reg-tn-encoding dst)))))))))
1867 (define-instruction movsx (segment dst src)
1868 (:printer ext-reg-reg/mem-no-width
1869 ((op #b10111110) (reg/mem nil :type 'sized-byte-reg/mem)))
1870 (:printer rex-ext-reg-reg/mem-no-width
1871 ((op #b10111110) (reg/mem nil :type 'sized-byte-reg/mem)))
1872 (:printer ext-reg-reg/mem-no-width
1873 ((op #b10111111) (reg/mem nil :type 'sized-word-reg/mem)))
1874 (:printer rex-ext-reg-reg/mem-no-width
1875 ((op #b10111111) (reg/mem nil :type 'sized-word-reg/mem)))
1876 (:emitter (emit-move-with-extension segment dst src :signed)))
1878 (define-instruction movzx (segment dst src)
1879 (:printer ext-reg-reg/mem-no-width
1880 ((op #b10110110) (reg/mem nil :type 'sized-byte-reg/mem)))
1881 (:printer rex-ext-reg-reg/mem-no-width
1882 ((op #b10110110) (reg/mem nil :type 'sized-byte-reg/mem)))
1883 (:printer ext-reg-reg/mem-no-width
1884 ((op #b10110111) (reg/mem nil :type 'sized-word-reg/mem)))
1885 (:printer rex-ext-reg-reg/mem-no-width
1886 ((op #b10110111) (reg/mem nil :type 'sized-word-reg/mem)))
1887 (:emitter (emit-move-with-extension segment dst src nil)))
1889 ;;; The regular use of MOVSXD is with an operand size of :qword. This
1890 ;;; sign-extends the dword source into the qword destination register.
1891 ;;; If the operand size is :dword the instruction zero-extends the dword
1892 ;;; source into the qword destination register, i.e. it does the same as
1893 ;;; a dword MOV into a register.
1894 (define-instruction movsxd (segment dst src)
1895 (:printer reg-reg/mem ((op #b0110001) (width 1)
1896 (reg/mem nil :type 'sized-dword-reg/mem)))
1897 (:printer rex-reg-reg/mem ((op #b0110001) (width 1)
1898 (reg/mem nil :type 'sized-dword-reg/mem)))
1899 (:emitter (emit-move-with-extension segment dst src :signed)))
1901 ;;; this is not a real amd64 instruction, of course
1902 (define-instruction movzxd (segment dst src)
1903 ; (:printer reg-reg/mem ((op #x63) (reg nil :type 'reg)))
1904 (:emitter (emit-move-with-extension segment dst src nil)))
1906 (define-instruction push (segment src)
1908 (:printer reg-no-width-default-qword ((op #b01010)))
1909 (:printer rex-reg-no-width-default-qword ((op #b01010)))
1911 (:printer reg/mem-default-qword ((op '(#b11111111 #b110))))
1912 (:printer rex-reg/mem-default-qword ((op '(#b11111111 #b110))))
1914 (:printer byte ((op #b01101010) (imm nil :type 'signed-imm-byte))
1916 (:printer byte ((op #b01101000)
1917 (imm nil :type 'signed-imm-data-default-qword))
1919 ;; ### segment registers?
1922 (cond ((integerp src)
1923 (cond ((<= -128 src 127)
1924 (emit-byte segment #b01101010)
1925 (emit-byte segment src))
1927 ;; A REX-prefix is not needed because the operand size
1928 ;; defaults to 64 bits. The size of the immediate is 32
1929 ;; bits and it is sign-extended.
1930 (emit-byte segment #b01101000)
1931 (emit-signed-dword segment src))))
1933 (let ((size (operand-size src)))
1934 (aver (or (eq size :qword) (eq size :word)))
1935 (maybe-emit-operand-size-prefix segment size)
1936 (maybe-emit-rex-for-ea segment src nil :operand-size :do-not-set)
1937 (cond ((register-p src)
1938 (emit-byte-with-reg segment #b01010 (reg-tn-encoding src)))
1940 (emit-byte segment #b11111111)
1941 (emit-ea segment src #b110 :allow-constants t))))))))
1943 (define-instruction pop (segment dst)
1944 (:printer reg-no-width-default-qword ((op #b01011)))
1945 (:printer rex-reg-no-width-default-qword ((op #b01011)))
1946 (:printer reg/mem-default-qword ((op '(#b10001111 #b000))))
1947 (:printer rex-reg/mem-default-qword ((op '(#b10001111 #b000))))
1949 (let ((size (operand-size dst)))
1950 (aver (or (eq size :qword) (eq size :word)))
1951 (maybe-emit-operand-size-prefix segment size)
1952 (maybe-emit-rex-for-ea segment dst nil :operand-size :do-not-set)
1953 (cond ((register-p dst)
1954 (emit-byte-with-reg segment #b01011 (reg-tn-encoding dst)))
1956 (emit-byte segment #b10001111)
1957 (emit-ea segment dst #b000))))))
1959 (define-instruction xchg (segment operand1 operand2)
1960 ;; Register with accumulator.
1961 (:printer reg-no-width ((op #b10010)) '(:name :tab accum ", " reg))
1962 ;; Register/Memory with Register.
1963 (:printer reg-reg/mem ((op #b1000011)))
1964 (:printer rex-reg-reg/mem ((op #b1000011)))
1966 (let ((size (matching-operand-size operand1 operand2)))
1967 (maybe-emit-operand-size-prefix segment size)
1968 (labels ((xchg-acc-with-something (acc something)
1969 (if (and (not (eq size :byte)) (register-p something))
1971 (maybe-emit-rex-for-ea segment acc something)
1972 (emit-byte-with-reg segment
1974 (reg-tn-encoding something)))
1975 (xchg-reg-with-something acc something)))
1976 (xchg-reg-with-something (reg something)
1977 (maybe-emit-rex-for-ea segment something reg)
1978 (emit-byte segment (if (eq size :byte) #b10000110 #b10000111))
1979 (emit-ea segment something (reg-tn-encoding reg))))
1980 (cond ((accumulator-p operand1)
1981 (xchg-acc-with-something operand1 operand2))
1982 ((accumulator-p operand2)
1983 (xchg-acc-with-something operand2 operand1))
1984 ((register-p operand1)
1985 (xchg-reg-with-something operand1 operand2))
1986 ((register-p operand2)
1987 (xchg-reg-with-something operand2 operand1))
1989 (error "bogus args to XCHG: ~S ~S" operand1 operand2)))))))
1991 (define-instruction lea (segment dst src)
1992 (:printer rex-reg-reg/mem ((op #b1000110)))
1993 (:printer reg-reg/mem ((op #b1000110) (width 1)))
1995 (aver (or (dword-reg-p dst) (qword-reg-p dst)))
1996 (maybe-emit-rex-for-ea segment src dst
1997 :operand-size :qword)
1998 (emit-byte segment #b10001101)
1999 (emit-ea segment src (reg-tn-encoding dst))))
2001 (define-instruction cmpxchg (segment dst src &optional prefix)
2002 ;; Register/Memory with Register.
2003 (:printer-list (ext-reg-reg/mem-printer-list #b1011000
2004 '(:name :tab reg/mem ", " reg)))
2006 (aver (register-p src))
2007 (emit-prefix segment prefix)
2008 (let ((size (matching-operand-size src dst)))
2009 (maybe-emit-operand-size-prefix segment size)
2010 (maybe-emit-rex-for-ea segment dst src)
2011 (emit-byte segment #b00001111)
2012 (emit-byte segment (if (eq size :byte) #b10110000 #b10110001))
2013 (emit-ea segment dst (reg-tn-encoding src)))))
2016 ;;;; flag control instructions
2018 ;;; CLC -- Clear Carry Flag.
2019 (define-instruction clc (segment)
2020 (:printer byte ((op #b11111000)))
2022 (emit-byte segment #b11111000)))
2024 ;;; CLD -- Clear Direction Flag.
2025 (define-instruction cld (segment)
2026 (:printer byte ((op #b11111100)))
2028 (emit-byte segment #b11111100)))
2030 ;;; CLI -- Clear Iterrupt Enable Flag.
2031 (define-instruction cli (segment)
2032 (:printer byte ((op #b11111010)))
2034 (emit-byte segment #b11111010)))
2036 ;;; CMC -- Complement Carry Flag.
2037 (define-instruction cmc (segment)
2038 (:printer byte ((op #b11110101)))
2040 (emit-byte segment #b11110101)))
2042 ;;; LAHF -- Load AH into flags.
2043 (define-instruction lahf (segment)
2044 (:printer byte ((op #b10011111)))
2046 (emit-byte segment #b10011111)))
2048 ;;; POPF -- Pop flags.
2049 (define-instruction popf (segment)
2050 (:printer byte ((op #b10011101)))
2052 (emit-byte segment #b10011101)))
2054 ;;; PUSHF -- push flags.
2055 (define-instruction pushf (segment)
2056 (:printer byte ((op #b10011100)))
2058 (emit-byte segment #b10011100)))
2060 ;;; SAHF -- Store AH into flags.
2061 (define-instruction sahf (segment)
2062 (:printer byte ((op #b10011110)))
2064 (emit-byte segment #b10011110)))
2066 ;;; STC -- Set Carry Flag.
2067 (define-instruction stc (segment)
2068 (:printer byte ((op #b11111001)))
2070 (emit-byte segment #b11111001)))
2072 ;;; STD -- Set Direction Flag.
2073 (define-instruction std (segment)
2074 (:printer byte ((op #b11111101)))
2076 (emit-byte segment #b11111101)))
2078 ;;; STI -- Set Interrupt Enable Flag.
2079 (define-instruction sti (segment)
2080 (:printer byte ((op #b11111011)))
2082 (emit-byte segment #b11111011)))
2086 (defun emit-random-arith-inst (name segment dst src opcode
2087 &optional allow-constants)
2088 (let ((size (matching-operand-size dst src)))
2089 (maybe-emit-operand-size-prefix segment size)
2092 (cond ((and (not (eq size :byte)) (<= -128 src 127))
2093 (maybe-emit-rex-for-ea segment dst nil)
2094 (emit-byte segment #b10000011)
2095 (emit-ea segment dst opcode :allow-constants allow-constants)
2096 (emit-byte segment src))
2097 ((accumulator-p dst)
2098 (maybe-emit-rex-for-ea segment dst nil)
2105 (emit-sized-immediate segment size src))
2107 (maybe-emit-rex-for-ea segment dst nil)
2108 (emit-byte segment (if (eq size :byte) #b10000000 #b10000001))
2109 (emit-ea segment dst opcode :allow-constants allow-constants)
2110 (emit-sized-immediate segment size src))))
2112 (maybe-emit-rex-for-ea segment dst src)
2116 (if (eq size :byte) #b00000000 #b00000001)))
2117 (emit-ea segment dst (reg-tn-encoding src) :allow-constants allow-constants))
2119 (maybe-emit-rex-for-ea segment src dst)
2123 (if (eq size :byte) #b00000010 #b00000011)))
2124 (emit-ea segment src (reg-tn-encoding dst) :allow-constants allow-constants))
2126 (error "bogus operands to ~A" name)))))
2128 (eval-when (:compile-toplevel :execute)
2129 (defun arith-inst-printer-list (subop)
2130 `((accum-imm ((op ,(dpb subop (byte 3 2) #b0000010))))
2131 (rex-accum-imm ((op ,(dpb subop (byte 3 2) #b0000010))))
2132 (reg/mem-imm ((op (#b1000000 ,subop))))
2133 (rex-reg/mem-imm ((op (#b1000000 ,subop))))
2134 ;; The redundant encoding #x82 is invalid in 64-bit mode,
2135 ;; therefore we force WIDTH to 1.
2136 (reg/mem-imm ((op (#b1000001 ,subop)) (width 1)
2137 (imm nil :type signed-imm-byte)))
2138 (rex-reg/mem-imm ((op (#b1000001 ,subop)) (width 1)
2139 (imm nil :type signed-imm-byte)))
2140 (reg-reg/mem-dir ((op ,(dpb subop (byte 3 1) #b000000))))
2141 (rex-reg-reg/mem-dir ((op ,(dpb subop (byte 3 1) #b000000))))))
2144 (define-instruction add (segment dst src &optional prefix)
2145 (:printer-list (arith-inst-printer-list #b000))
2147 (emit-prefix segment prefix)
2148 (emit-random-arith-inst "ADD" segment dst src #b000)))
2150 (define-instruction adc (segment dst src)
2151 (:printer-list (arith-inst-printer-list #b010))
2152 (:emitter (emit-random-arith-inst "ADC" segment dst src #b010)))
2154 (define-instruction sub (segment dst src)
2155 (:printer-list (arith-inst-printer-list #b101))
2156 (:emitter (emit-random-arith-inst "SUB" segment dst src #b101)))
2158 (define-instruction sbb (segment dst src)
2159 (:printer-list (arith-inst-printer-list #b011))
2160 (:emitter (emit-random-arith-inst "SBB" segment dst src #b011)))
2162 (define-instruction cmp (segment dst src)
2163 (:printer-list (arith-inst-printer-list #b111))
2164 (:emitter (emit-random-arith-inst "CMP" segment dst src #b111 t)))
2166 ;;; The one-byte encodings for INC and DEC are used as REX prefixes
2167 ;;; in 64-bit mode so we always use the two-byte form.
2168 (define-instruction inc (segment dst)
2169 (:printer reg/mem ((op '(#b1111111 #b000))))
2170 (:printer rex-reg/mem ((op '(#b1111111 #b000))))
2172 (let ((size (operand-size dst)))
2173 (maybe-emit-operand-size-prefix segment size)
2174 (maybe-emit-rex-for-ea segment dst nil)
2175 (emit-byte segment (if (eq size :byte) #b11111110 #b11111111))
2176 (emit-ea segment dst #b000))))
2178 (define-instruction dec (segment dst)
2179 (:printer reg/mem ((op '(#b1111111 #b001))))
2180 (:printer rex-reg/mem ((op '(#b1111111 #b001))))
2182 (let ((size (operand-size dst)))
2183 (maybe-emit-operand-size-prefix segment size)
2184 (maybe-emit-rex-for-ea segment dst nil)
2185 (emit-byte segment (if (eq size :byte) #b11111110 #b11111111))
2186 (emit-ea segment dst #b001))))
2188 (define-instruction neg (segment dst)
2189 (:printer reg/mem ((op '(#b1111011 #b011))))
2190 (:printer rex-reg/mem ((op '(#b1111011 #b011))))
2192 (let ((size (operand-size dst)))
2193 (maybe-emit-operand-size-prefix segment size)
2194 (maybe-emit-rex-for-ea segment dst nil)
2195 (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
2196 (emit-ea segment dst #b011))))
2198 (define-instruction mul (segment dst src)
2199 (:printer accum-reg/mem ((op '(#b1111011 #b100))))
2200 (:printer rex-accum-reg/mem ((op '(#b1111011 #b100))))
2202 (let ((size (matching-operand-size dst src)))
2203 (aver (accumulator-p dst))
2204 (maybe-emit-operand-size-prefix segment size)
2205 (maybe-emit-rex-for-ea segment src nil)
2206 (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
2207 (emit-ea segment src #b100))))
2209 (define-instruction imul (segment dst &optional src1 src2)
2210 (:printer accum-reg/mem ((op '(#b1111011 #b101))))
2211 (:printer rex-accum-reg/mem ((op '(#b1111011 #b101))))
2212 (:printer ext-reg-reg/mem-no-width ((op #b10101111)))
2213 (:printer rex-ext-reg-reg/mem-no-width ((op #b10101111)))
2214 (:printer reg-reg/mem ((op #b0110100) (width 1)
2215 (imm nil :type 'signed-imm-data))
2216 '(:name :tab reg ", " reg/mem ", " imm))
2217 (:printer rex-reg-reg/mem ((op #b0110100) (width 1)
2218 (imm nil :type 'signed-imm-data))
2219 '(:name :tab reg ", " reg/mem ", " imm))
2220 (:printer reg-reg/mem ((op #b0110101) (width 1)
2221 (imm nil :type 'signed-imm-byte))
2222 '(:name :tab reg ", " reg/mem ", " imm))
2223 (:printer rex-reg-reg/mem ((op #b0110101) (width 1)
2224 (imm nil :type 'signed-imm-byte))
2225 '(:name :tab reg ", " reg/mem ", " imm))
2227 (flet ((r/m-with-immed-to-reg (reg r/m immed)
2228 (let* ((size (matching-operand-size reg r/m))
2229 (sx (and (not (eq size :byte)) (<= -128 immed 127))))
2230 (maybe-emit-operand-size-prefix segment size)
2231 (maybe-emit-rex-for-ea segment r/m reg)
2232 (emit-byte segment (if sx #b01101011 #b01101001))
2233 (emit-ea segment r/m (reg-tn-encoding reg))
2235 (emit-byte segment immed)
2236 (emit-sized-immediate segment size immed)))))
2238 (r/m-with-immed-to-reg dst src1 src2))
2241 (r/m-with-immed-to-reg dst dst src1)
2242 (let ((size (matching-operand-size dst src1)))
2243 (maybe-emit-operand-size-prefix segment size)
2244 (maybe-emit-rex-for-ea segment src1 dst)
2245 (emit-byte segment #b00001111)
2246 (emit-byte segment #b10101111)
2247 (emit-ea segment src1 (reg-tn-encoding dst)))))
2249 (let ((size (operand-size dst)))
2250 (maybe-emit-operand-size-prefix segment size)
2251 (maybe-emit-rex-for-ea segment dst nil)
2252 (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
2253 (emit-ea segment dst #b101)))))))
2255 (define-instruction div (segment dst src)
2256 (:printer accum-reg/mem ((op '(#b1111011 #b110))))
2257 (:printer rex-accum-reg/mem ((op '(#b1111011 #b110))))
2259 (let ((size (matching-operand-size dst src)))
2260 (aver (accumulator-p dst))
2261 (maybe-emit-operand-size-prefix segment size)
2262 (maybe-emit-rex-for-ea segment src nil)
2263 (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
2264 (emit-ea segment src #b110))))
2266 (define-instruction idiv (segment dst src)
2267 (:printer accum-reg/mem ((op '(#b1111011 #b111))))
2268 (:printer rex-accum-reg/mem ((op '(#b1111011 #b111))))
2270 (let ((size (matching-operand-size dst src)))
2271 (aver (accumulator-p dst))
2272 (maybe-emit-operand-size-prefix segment size)
2273 (maybe-emit-rex-for-ea segment src nil)
2274 (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
2275 (emit-ea segment src #b111))))
2277 (define-instruction bswap (segment dst)
2278 (:printer ext-reg-no-width ((op #b11001)))
2280 (let ((size (operand-size dst)))
2281 (maybe-emit-rex-prefix segment size nil nil dst)
2282 (emit-byte segment #x0f)
2283 (emit-byte-with-reg segment #b11001 (reg-tn-encoding dst)))))
2285 ;;; CBW -- Convert Byte to Word. AX <- sign_xtnd(AL)
2286 (define-instruction cbw (segment)
2287 (:printer x66-byte ((op #b10011000)))
2289 (maybe-emit-operand-size-prefix segment :word)
2290 (emit-byte segment #b10011000)))
2292 ;;; CWDE -- Convert Word To Double Word Extended. EAX <- sign_xtnd(AX)
2293 (define-instruction cwde (segment)
2294 (:printer byte ((op #b10011000)))
2296 (maybe-emit-operand-size-prefix segment :dword)
2297 (emit-byte segment #b10011000)))
2299 ;;; CDQE -- Convert Double Word To Quad Word Extended. RAX <- sign_xtnd(EAX)
2300 (define-instruction cdqe (segment)
2301 (:printer rex-byte ((op #b10011000)))
2303 (maybe-emit-rex-prefix segment :qword nil nil nil)
2304 (emit-byte segment #b10011000)))
2306 ;;; CWD -- Convert Word to Double Word. DX:AX <- sign_xtnd(AX)
2307 (define-instruction cwd (segment)
2308 (:printer x66-byte ((op #b10011001)))
2310 (maybe-emit-operand-size-prefix segment :word)
2311 (emit-byte segment #b10011001)))
2313 ;;; CDQ -- Convert Double Word to Quad Word. EDX:EAX <- sign_xtnd(EAX)
2314 (define-instruction cdq (segment)
2315 (:printer byte ((op #b10011001)))
2317 (maybe-emit-operand-size-prefix segment :dword)
2318 (emit-byte segment #b10011001)))
2320 ;;; CQO -- Convert Quad Word to Octaword. RDX:RAX <- sign_xtnd(RAX)
2321 (define-instruction cqo (segment)
2322 (:printer rex-byte ((op #b10011001)))
2324 (maybe-emit-rex-prefix segment :qword nil nil nil)
2325 (emit-byte segment #b10011001)))
2327 (define-instruction xadd (segment dst src &optional prefix)
2328 ;; Register/Memory with Register.
2329 (:printer-list (ext-reg-reg/mem-printer-list #b1100000
2330 '(:name :tab reg/mem ", " reg)))
2332 (aver (register-p src))
2333 (emit-prefix segment prefix)
2334 (let ((size (matching-operand-size src dst)))
2335 (maybe-emit-operand-size-prefix segment size)
2336 (maybe-emit-rex-for-ea segment dst src)
2337 (emit-byte segment #b00001111)
2338 (emit-byte segment (if (eq size :byte) #b11000000 #b11000001))
2339 (emit-ea segment dst (reg-tn-encoding src)))))
2344 (defun emit-shift-inst (segment dst amount opcode)
2345 (let ((size (operand-size dst)))
2346 (maybe-emit-operand-size-prefix segment size)
2347 (multiple-value-bind (major-opcode immed)
2349 (:cl (values #b11010010 nil))
2350 (1 (values #b11010000 nil))
2351 (t (values #b11000000 t)))
2352 (maybe-emit-rex-for-ea segment dst nil)
2354 (if (eq size :byte) major-opcode (logior major-opcode 1)))
2355 (emit-ea segment dst opcode)
2357 (emit-byte segment amount)))))
2359 (eval-when (:compile-toplevel :execute)
2360 (defun shift-inst-printer-list (subop)
2361 `((reg/mem ((op (#b1101000 ,subop)))
2362 (:name :tab reg/mem ", 1"))
2363 (rex-reg/mem ((op (#b1101000 ,subop)))
2364 (:name :tab reg/mem ", 1"))
2365 (reg/mem ((op (#b1101001 ,subop)))
2366 (:name :tab reg/mem ", " 'cl))
2367 (rex-reg/mem ((op (#b1101001 ,subop)))
2368 (:name :tab reg/mem ", " 'cl))
2369 (reg/mem-imm ((op (#b1100000 ,subop))
2370 (imm nil :type imm-byte)))
2371 (rex-reg/mem-imm ((op (#b1100000 ,subop))
2372 (imm nil :type imm-byte))))))
2374 (define-instruction rol (segment dst amount)
2376 (shift-inst-printer-list #b000))
2378 (emit-shift-inst segment dst amount #b000)))
2380 (define-instruction ror (segment dst amount)
2382 (shift-inst-printer-list #b001))
2384 (emit-shift-inst segment dst amount #b001)))
2386 (define-instruction rcl (segment dst amount)
2388 (shift-inst-printer-list #b010))
2390 (emit-shift-inst segment dst amount #b010)))
2392 (define-instruction rcr (segment dst amount)
2394 (shift-inst-printer-list #b011))
2396 (emit-shift-inst segment dst amount #b011)))
2398 (define-instruction shl (segment dst amount)
2400 (shift-inst-printer-list #b100))
2402 (emit-shift-inst segment dst amount #b100)))
2404 (define-instruction shr (segment dst amount)
2406 (shift-inst-printer-list #b101))
2408 (emit-shift-inst segment dst amount #b101)))
2410 (define-instruction sar (segment dst amount)
2412 (shift-inst-printer-list #b111))
2414 (emit-shift-inst segment dst amount #b111)))
2416 (defun emit-double-shift (segment opcode dst src amt)
2417 (let ((size (matching-operand-size dst src)))
2418 (when (eq size :byte)
2419 (error "Double shifts can only be used with words."))
2420 (maybe-emit-operand-size-prefix segment size)
2421 (maybe-emit-rex-for-ea segment dst src)
2422 (emit-byte segment #b00001111)
2423 (emit-byte segment (dpb opcode (byte 1 3)
2424 (if (eq amt :cl) #b10100101 #b10100100)))
2425 (emit-ea segment dst (reg-tn-encoding src))
2426 (unless (eq amt :cl)
2427 (emit-byte segment amt))))
2429 (eval-when (:compile-toplevel :execute)
2430 (defun double-shift-inst-printer-list (op)
2432 (ext-reg-reg/mem-imm ((op ,(logior op #b100))
2433 (imm nil :type signed-imm-byte)))
2434 (ext-reg-reg/mem ((op ,(logior op #b101)))
2435 (:name :tab reg/mem ", " reg ", " 'cl)))))
2437 (define-instruction shld (segment dst src amt)
2438 (:declare (type (or (member :cl) (mod 32)) amt))
2439 (:printer-list (double-shift-inst-printer-list #b10100000))
2441 (emit-double-shift segment #b0 dst src amt)))
2443 (define-instruction shrd (segment dst src amt)
2444 (:declare (type (or (member :cl) (mod 32)) amt))
2445 (:printer-list (double-shift-inst-printer-list #b10101000))
2447 (emit-double-shift segment #b1 dst src amt)))
2449 (define-instruction and (segment dst src)
2451 (arith-inst-printer-list #b100))
2453 (emit-random-arith-inst "AND" segment dst src #b100)))
2455 (define-instruction test (segment this that)
2456 (:printer accum-imm ((op #b1010100)))
2457 (:printer rex-accum-imm ((op #b1010100)))
2458 (:printer reg/mem-imm ((op '(#b1111011 #b000))))
2459 (:printer rex-reg/mem-imm ((op '(#b1111011 #b000))))
2460 (:printer reg-reg/mem ((op #b1000010)))
2461 (:printer rex-reg-reg/mem ((op #b1000010)))
2463 (let ((size (matching-operand-size this that)))
2464 (maybe-emit-operand-size-prefix segment size)
2465 (flet ((test-immed-and-something (immed something)
2466 (cond ((accumulator-p something)
2467 (maybe-emit-rex-for-ea segment something nil)
2469 (if (eq size :byte) #b10101000 #b10101001))
2470 (emit-sized-immediate segment size immed))
2472 (maybe-emit-rex-for-ea segment something nil)
2474 (if (eq size :byte) #b11110110 #b11110111))
2475 (emit-ea segment something #b000)
2476 (emit-sized-immediate segment size immed))))
2477 (test-reg-and-something (reg something)
2478 (maybe-emit-rex-for-ea segment something reg)
2479 (emit-byte segment (if (eq size :byte) #b10000100 #b10000101))
2480 (emit-ea segment something (reg-tn-encoding reg))))
2481 (cond ((integerp that)
2482 (test-immed-and-something that this))
2484 (test-immed-and-something this that))
2486 (test-reg-and-something this that))
2488 (test-reg-and-something that this))
2490 (error "bogus operands for TEST: ~S and ~S" this that)))))))
2492 (define-instruction or (segment dst src)
2494 (arith-inst-printer-list #b001))
2496 (emit-random-arith-inst "OR" segment dst src #b001)))
2498 (define-instruction xor (segment dst src)
2500 (arith-inst-printer-list #b110))
2502 (emit-random-arith-inst "XOR" segment dst src #b110)))
2504 (define-instruction not (segment dst)
2505 (:printer reg/mem ((op '(#b1111011 #b010))))
2506 (:printer rex-reg/mem ((op '(#b1111011 #b010))))
2508 (let ((size (operand-size dst)))
2509 (maybe-emit-operand-size-prefix segment size)
2510 (maybe-emit-rex-for-ea segment dst nil)
2511 (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
2512 (emit-ea segment dst #b010))))
2514 ;;;; string manipulation
2516 (define-instruction cmps (segment size)
2517 (:printer string-op ((op #b1010011)))
2518 (:printer rex-string-op ((op #b1010011)))
2520 (maybe-emit-operand-size-prefix segment size)
2521 (maybe-emit-rex-prefix segment size nil nil nil)
2522 (emit-byte segment (if (eq size :byte) #b10100110 #b10100111))))
2524 (define-instruction ins (segment acc)
2525 (:printer string-op ((op #b0110110)))
2526 (:printer rex-string-op ((op #b0110110)))
2528 (let ((size (operand-size acc)))
2529 (aver (accumulator-p acc))
2530 (maybe-emit-operand-size-prefix segment size)
2531 (maybe-emit-rex-prefix segment size nil nil nil)
2532 (emit-byte segment (if (eq size :byte) #b01101100 #b01101101)))))
2534 (define-instruction lods (segment acc)
2535 (:printer string-op ((op #b1010110)))
2536 (:printer rex-string-op ((op #b1010110)))
2538 (let ((size (operand-size acc)))
2539 (aver (accumulator-p acc))
2540 (maybe-emit-operand-size-prefix segment size)
2541 (maybe-emit-rex-prefix segment size nil nil nil)
2542 (emit-byte segment (if (eq size :byte) #b10101100 #b10101101)))))
2544 (define-instruction movs (segment size)
2545 (:printer string-op ((op #b1010010)))
2546 (:printer rex-string-op ((op #b1010010)))
2548 (maybe-emit-operand-size-prefix segment size)
2549 (maybe-emit-rex-prefix segment size nil nil nil)
2550 (emit-byte segment (if (eq size :byte) #b10100100 #b10100101))))
2552 (define-instruction outs (segment acc)
2553 (:printer string-op ((op #b0110111)))
2554 (:printer rex-string-op ((op #b0110111)))
2556 (let ((size (operand-size acc)))
2557 (aver (accumulator-p acc))
2558 (maybe-emit-operand-size-prefix segment size)
2559 (maybe-emit-rex-prefix segment size nil nil nil)
2560 (emit-byte segment (if (eq size :byte) #b01101110 #b01101111)))))
2562 (define-instruction scas (segment acc)
2563 (:printer string-op ((op #b1010111)))
2564 (:printer rex-string-op ((op #b1010111)))
2566 (let ((size (operand-size acc)))
2567 (aver (accumulator-p acc))
2568 (maybe-emit-operand-size-prefix segment size)
2569 (maybe-emit-rex-prefix segment size nil nil nil)
2570 (emit-byte segment (if (eq size :byte) #b10101110 #b10101111)))))
2572 (define-instruction stos (segment acc)
2573 (:printer string-op ((op #b1010101)))
2574 (:printer rex-string-op ((op #b1010101)))
2576 (let ((size (operand-size acc)))
2577 (aver (accumulator-p acc))
2578 (maybe-emit-operand-size-prefix segment size)
2579 (maybe-emit-rex-prefix segment size nil nil nil)
2580 (emit-byte segment (if (eq size :byte) #b10101010 #b10101011)))))
2582 (define-instruction xlat (segment)
2583 (:printer byte ((op #b11010111)))
2585 (emit-byte segment #b11010111)))
2587 (define-instruction rep (segment)
2589 (emit-byte segment #b11110011)))
2591 (define-instruction repe (segment)
2592 (:printer byte ((op #b11110011)))
2594 (emit-byte segment #b11110011)))
2596 (define-instruction repne (segment)
2597 (:printer byte ((op #b11110010)))
2599 (emit-byte segment #b11110010)))
2602 ;;;; bit manipulation
2604 (define-instruction bsf (segment dst src)
2605 (:printer ext-reg-reg/mem-no-width ((op #b10111100)))
2606 (:printer rex-ext-reg-reg/mem-no-width ((op #b10111100)))
2608 (let ((size (matching-operand-size dst src)))
2609 (when (eq size :byte)
2610 (error "can't scan bytes: ~S" src))
2611 (maybe-emit-operand-size-prefix segment size)
2612 (maybe-emit-rex-for-ea segment src dst)
2613 (emit-byte segment #b00001111)
2614 (emit-byte segment #b10111100)
2615 (emit-ea segment src (reg-tn-encoding dst)))))
2617 (define-instruction bsr (segment dst src)
2618 (:printer ext-reg-reg/mem-no-width ((op #b10111101)))
2619 (:printer rex-ext-reg-reg/mem-no-width ((op #b10111101)))
2621 (let ((size (matching-operand-size dst src)))
2622 (when (eq size :byte)
2623 (error "can't scan bytes: ~S" src))
2624 (maybe-emit-operand-size-prefix segment size)
2625 (maybe-emit-rex-for-ea segment src dst)
2626 (emit-byte segment #b00001111)
2627 (emit-byte segment #b10111101)
2628 (emit-ea segment src (reg-tn-encoding dst)))))
2630 (defun emit-bit-test-and-mumble (segment src index opcode)
2631 (let ((size (operand-size src)))
2632 (when (eq size :byte)
2633 (error "can't scan bytes: ~S" src))
2634 (maybe-emit-operand-size-prefix segment size)
2635 (cond ((integerp index)
2636 (maybe-emit-rex-for-ea segment src nil)
2637 (emit-byte segment #b00001111)
2638 (emit-byte segment #b10111010)
2639 (emit-ea segment src opcode)
2640 (emit-byte segment index))
2642 (maybe-emit-rex-for-ea segment src index)
2643 (emit-byte segment #b00001111)
2644 (emit-byte segment (dpb opcode (byte 3 3) #b10000011))
2645 (emit-ea segment src (reg-tn-encoding index))))))
2647 (eval-when (:compile-toplevel :execute)
2648 (defun bit-test-inst-printer-list (subop)
2649 `((ext-reg/mem-imm ((op (#b1011101 ,subop))
2650 (reg/mem nil :type reg/mem)
2651 (imm nil :type imm-byte)
2653 (ext-reg-reg/mem ((op ,(dpb subop (byte 3 2) #b1000001))
2655 (:name :tab reg/mem ", " reg)))))
2657 (define-instruction bt (segment src index)
2658 (:printer-list (bit-test-inst-printer-list #b100))
2660 (emit-bit-test-and-mumble segment src index #b100)))
2662 (define-instruction btc (segment src index)
2663 (:printer-list (bit-test-inst-printer-list #b111))
2665 (emit-bit-test-and-mumble segment src index #b111)))
2667 (define-instruction btr (segment src index)
2668 (:printer-list (bit-test-inst-printer-list #b110))
2670 (emit-bit-test-and-mumble segment src index #b110)))
2672 (define-instruction bts (segment src index)
2673 (:printer-list (bit-test-inst-printer-list #b101))
2675 (emit-bit-test-and-mumble segment src index #b101)))
2678 ;;;; control transfer
2680 (define-instruction call (segment where)
2681 (:printer near-jump ((op #b11101000)))
2682 (:printer reg/mem-default-qword ((op '(#b11111111 #b010))))
2683 (:printer rex-reg/mem-default-qword ((op '(#b11111111 #b010))))
2687 (emit-byte segment #b11101000) ; 32 bit relative
2688 (emit-back-patch segment
2690 (lambda (segment posn)
2691 (emit-signed-dword segment
2692 (- (label-position where)
2695 ;; There is no CALL rel64...
2696 (error "Cannot CALL a fixup: ~S" where))
2698 (maybe-emit-rex-for-ea segment where nil :operand-size :do-not-set)
2699 (emit-byte segment #b11111111)
2700 (emit-ea segment where #b010)))))
2702 (defun emit-byte-displacement-backpatch (segment target)
2703 (emit-back-patch segment
2705 (lambda (segment posn)
2706 (let ((disp (- (label-position target) (1+ posn))))
2707 (aver (<= -128 disp 127))
2708 (emit-byte segment disp)))))
2710 (define-instruction jmp (segment cond &optional where)
2711 ;; conditional jumps
2712 (:printer short-cond-jump ((op #b0111)) '('j cc :tab label))
2713 (:printer near-cond-jump () '('j cc :tab label))
2714 ;; unconditional jumps
2715 (:printer short-jump ((op #b1011)))
2716 (:printer near-jump ((op #b11101001)))
2717 (:printer reg/mem-default-qword ((op '(#b11111111 #b100))))
2718 (:printer rex-reg/mem-default-qword ((op '(#b11111111 #b100))))
2723 (lambda (segment posn delta-if-after)
2724 (let ((disp (- (label-position where posn delta-if-after)
2726 (when (<= -128 disp 127)
2728 (dpb (conditional-opcode cond)
2731 (emit-byte-displacement-backpatch segment where)
2733 (lambda (segment posn)
2734 (let ((disp (- (label-position where) (+ posn 6))))
2735 (emit-byte segment #b00001111)
2737 (dpb (conditional-opcode cond)
2740 (emit-signed-dword segment disp)))))
2741 ((label-p (setq where cond))
2744 (lambda (segment posn delta-if-after)
2745 (let ((disp (- (label-position where posn delta-if-after)
2747 (when (<= -128 disp 127)
2748 (emit-byte segment #b11101011)
2749 (emit-byte-displacement-backpatch segment where)
2751 (lambda (segment posn)
2752 (let ((disp (- (label-position where) (+ posn 5))))
2753 (emit-byte segment #b11101001)
2754 (emit-signed-dword segment disp)))))
2756 (emit-byte segment #b11101001)
2757 (emit-relative-fixup segment where))
2759 (unless (or (ea-p where) (tn-p where))
2760 (error "don't know what to do with ~A" where))
2761 ;; near jump defaults to 64 bit
2762 ;; w-bit in rex prefix is unnecessary
2763 (maybe-emit-rex-for-ea segment where nil :operand-size :do-not-set)
2764 (emit-byte segment #b11111111)
2765 (emit-ea segment where #b100)))))
2767 (define-instruction ret (segment &optional stack-delta)
2768 (:printer byte ((op #b11000011)))
2769 (:printer byte ((op #b11000010) (imm nil :type 'imm-word-16))
2772 (cond ((and stack-delta (not (zerop stack-delta)))
2773 (emit-byte segment #b11000010)
2774 (emit-word segment stack-delta))
2776 (emit-byte segment #b11000011)))))
2778 (define-instruction jrcxz (segment target)
2779 (:printer short-jump ((op #b0011)))
2781 (emit-byte segment #b11100011)
2782 (emit-byte-displacement-backpatch segment target)))
2784 (define-instruction loop (segment target)
2785 (:printer short-jump ((op #b0010)))
2787 (emit-byte segment #b11100010) ; pfw this was 11100011, or jecxz!!!!
2788 (emit-byte-displacement-backpatch segment target)))
2790 (define-instruction loopz (segment target)
2791 (:printer short-jump ((op #b0001)))
2793 (emit-byte segment #b11100001)
2794 (emit-byte-displacement-backpatch segment target)))
2796 (define-instruction loopnz (segment target)
2797 (:printer short-jump ((op #b0000)))
2799 (emit-byte segment #b11100000)
2800 (emit-byte-displacement-backpatch segment target)))
2802 ;;;; conditional move
2803 (define-instruction cmov (segment cond dst src)
2804 (:printer cond-move ())
2805 (:printer rex-cond-move ())
2807 (aver (register-p dst))
2808 (let ((size (matching-operand-size dst src)))
2809 (aver (or (eq size :word) (eq size :dword) (eq size :qword)))
2810 (maybe-emit-operand-size-prefix segment size))
2811 (maybe-emit-rex-for-ea segment src dst)
2812 (emit-byte segment #b00001111)
2813 (emit-byte segment (dpb (conditional-opcode cond) (byte 4 0) #b01000000))
2814 (emit-ea segment src (reg-tn-encoding dst))))
2816 ;;;; conditional byte set
2818 (define-instruction set (segment dst cond)
2819 (:printer cond-set ())
2821 (maybe-emit-rex-for-ea segment dst nil)
2822 (emit-byte segment #b00001111)
2823 (emit-byte segment (dpb (conditional-opcode cond) (byte 4 0) #b10010000))
2824 (emit-ea segment dst #b000)))
2828 (define-instruction enter (segment disp &optional (level 0))
2829 (:declare (type (unsigned-byte 16) disp)
2830 (type (unsigned-byte 8) level))
2831 (:printer enter-format ((op #b11001000)))
2833 (emit-byte segment #b11001000)
2834 (emit-word segment disp)
2835 (emit-byte segment level)))
2837 (define-instruction leave (segment)
2838 (:printer byte ((op #b11001001)))
2840 (emit-byte segment #b11001001)))
2842 ;;;; interrupt instructions
2844 (defun snarf-error-junk (sap offset &optional length-only)
2845 (let* ((length (sb!sys:sap-ref-8 sap offset))
2846 (vector (make-array length :element-type '(unsigned-byte 8))))
2847 (declare (type sb!sys:system-area-pointer sap)
2848 (type (unsigned-byte 8) length)
2849 (type (simple-array (unsigned-byte 8) (*)) vector))
2851 (values 0 (1+ length) nil nil))
2853 (sb!kernel:copy-ub8-from-system-area sap (1+ offset)
2855 (collect ((sc-offsets)
2857 (lengths 1) ; the length byte
2859 (error-number (sb!c:read-var-integer vector index)))
2862 (when (>= index length)
2864 (let ((old-index index))
2865 (sc-offsets (sb!c:read-var-integer vector index))
2866 (lengths (- index old-index))))
2867 (values error-number
2873 (defmacro break-cases (breaknum &body cases)
2874 (let ((bn-temp (gensym)))
2875 (collect ((clauses))
2876 (dolist (case cases)
2877 (clauses `((= ,bn-temp ,(car case)) ,@(cdr case))))
2878 `(let ((,bn-temp ,breaknum))
2879 (cond ,@(clauses))))))
2882 (defun break-control (chunk inst stream dstate)
2883 (declare (ignore inst))
2884 (flet ((nt (x) (if stream (sb!disassem:note x dstate))))
2885 ;; XXX: {BYTE,WORD}-IMM-CODE below is a macro defined by the
2886 ;; DEFINE-INSTRUCTION-FORMAT for {BYTE,WORD}-IMM above. Due to
2887 ;; the spectacular design for DEFINE-INSTRUCTION-FORMAT (involving
2888 ;; a call to EVAL in order to define the macros at compile-time
2889 ;; only) they do not even show up as symbols in the target core.
2890 (case #!-ud2-breakpoints (byte-imm-code chunk dstate)
2891 #!+ud2-breakpoints (word-imm-code chunk dstate)
2894 (sb!disassem:handle-break-args #'snarf-error-junk stream dstate))
2897 (sb!disassem:handle-break-args #'snarf-error-junk stream dstate))
2899 (nt "breakpoint trap"))
2900 (#.pending-interrupt-trap
2901 (nt "pending interrupt trap"))
2904 (#.fun-end-breakpoint-trap
2905 (nt "function end breakpoint trap"))
2906 (#.single-step-around-trap
2907 (nt "single-step trap (around)"))
2908 (#.single-step-before-trap
2909 (nt "single-step trap (before)")))))
2911 (define-instruction break (segment code)
2912 (:declare (type (unsigned-byte 8) code))
2913 #!-ud2-breakpoints (:printer byte-imm ((op #b11001100)) '(:name :tab code)
2914 :control #'break-control)
2915 #!+ud2-breakpoints (:printer word-imm ((op #b0000101100001111)) '(:name :tab code)
2916 :control #'break-control)
2918 #!-ud2-breakpoints (emit-byte segment #b11001100)
2919 ;; On darwin, trap handling via SIGTRAP is unreliable, therefore we
2920 ;; throw a sigill with 0x0b0f instead and check for this in the
2921 ;; SIGILL handler and pass it on to the sigtrap handler if
2923 #!+ud2-breakpoints (emit-word segment #b0000101100001111)
2924 (emit-byte segment code)))
2926 (define-instruction int (segment number)
2927 (:declare (type (unsigned-byte 8) number))
2928 (:printer byte-imm ((op #b11001101)))
2932 (emit-byte segment #b11001100))
2934 (emit-byte segment #b11001101)
2935 (emit-byte segment number)))))
2937 (define-instruction iret (segment)
2938 (:printer byte ((op #b11001111)))
2940 (emit-byte segment #b11001111)))
2942 ;;;; processor control
2944 (define-instruction hlt (segment)
2945 (:printer byte ((op #b11110100)))
2947 (emit-byte segment #b11110100)))
2949 (define-instruction nop (segment)
2950 (:printer byte ((op #b10010000)))
2952 (emit-byte segment #b10010000)))
2954 (define-instruction wait (segment)
2955 (:printer byte ((op #b10011011)))
2957 (emit-byte segment #b10011011)))
2959 (defun emit-prefix (segment name)
2960 (declare (ignorable segment))
2965 (emit-byte segment #xf0))))
2967 ;;; FIXME: It would be better to make the disassembler understand the prefix as part
2968 ;;; of the instructions...
2969 (define-instruction lock (segment)
2970 (:printer byte ((op #b11110000)))
2972 (bug "LOCK prefix used as a standalone instruction")))
2974 ;;;; miscellaneous hackery
2976 (define-instruction byte (segment byte)
2978 (emit-byte segment byte)))
2980 (define-instruction word (segment word)
2982 (emit-word segment word)))
2984 (define-instruction dword (segment dword)
2986 (emit-dword segment dword)))
2988 (defun emit-header-data (segment type)
2989 (emit-back-patch segment
2991 (lambda (segment posn)
2995 (component-header-length))
2999 (define-instruction simple-fun-header-word (segment)
3001 (emit-header-data segment simple-fun-header-widetag)))
3003 (define-instruction lra-header-word (segment)
3005 (emit-header-data segment return-pc-header-widetag)))
3007 ;;;; Instructions required to do floating point operations using SSE
3009 ;; Return a two-element list of printers for SSE instructions. One
3010 ;; printer is for the format without a REX prefix, the other one for the
3012 (eval-when (:compile-toplevel :execute)
3013 (defun sse-inst-printer-list (inst-format-stem prefix opcode
3014 &key more-fields printer)
3015 (let ((fields `(,@(when prefix
3016 `((prefix ,prefix)))
3019 (inst-formats (if prefix
3020 (list (symbolicate "EXT-" inst-format-stem)
3021 (symbolicate "EXT-REX-" inst-format-stem))
3022 (list inst-format-stem
3023 (symbolicate "REX-" inst-format-stem)))))
3024 (mapcar (lambda (inst-format)
3025 `(,inst-format ,fields ,@(when printer
3029 (defun emit-sse-inst (segment dst src prefix opcode
3030 &key operand-size (remaining-bytes 0))
3032 (emit-byte segment prefix))
3034 (maybe-emit-rex-for-ea segment src dst :operand-size operand-size)
3035 (maybe-emit-rex-for-ea segment src dst))
3036 (emit-byte segment #x0f)
3037 (emit-byte segment opcode)
3038 (emit-ea segment src (reg-tn-encoding dst) :remaining-bytes remaining-bytes))
3040 ;; 0110 0110:0000 1111:0111 00gg: 11 010 xmmreg:imm8
3042 (defun emit-sse-inst-with-imm (segment dst/src imm
3047 (emit-byte segment prefix))
3048 (maybe-emit-rex-prefix segment operand-size dst/src nil nil)
3049 (emit-byte segment #x0F)
3050 (emit-byte segment opcode)
3051 (emit-byte segment (logior (ash (logior #b11000 /i) 3)
3052 (reg-tn-encoding dst/src)))
3053 (emit-byte segment imm))
3056 ((define-imm-sse-instruction (name opcode /i)
3057 `(define-instruction ,name (segment dst/src imm)
3059 ',(sse-inst-printer-list 'xmm-imm #x66 opcode
3060 :more-fields `((/i ,/i))))
3062 (emit-sse-inst-with-imm segment dst/src imm
3064 :operand-size :do-not-set)))))
3065 (define-imm-sse-instruction pslldq #x73 7)
3066 (define-imm-sse-instruction psllw-imm #x71 6)
3067 (define-imm-sse-instruction pslld-imm #x72 6)
3068 (define-imm-sse-instruction psllq-imm #x73 6)
3070 (define-imm-sse-instruction psraw-imm #x71 4)
3071 (define-imm-sse-instruction psrad-imm #x72 4)
3073 (define-imm-sse-instruction psrldq #x73 3)
3074 (define-imm-sse-instruction psrlw-imm #x71 2)
3075 (define-imm-sse-instruction psrld-imm #x72 2)
3076 (define-imm-sse-instruction psrlq-imm #x73 2))
3078 ;;; Emit an SSE instruction that has an XMM register as the destination
3079 ;;; operand and for which the size of the operands is implicitly given
3080 ;;; by the instruction.
3081 (defun emit-regular-sse-inst (segment dst src prefix opcode
3082 &key (remaining-bytes 0))
3083 (aver (xmm-register-p dst))
3084 (emit-sse-inst segment dst src prefix opcode
3085 :operand-size :do-not-set
3086 :remaining-bytes remaining-bytes))
3088 ;;; Instructions having an XMM register as the destination operand
3089 ;;; and an XMM register or a memory location as the source operand.
3090 ;;; The operand size is implicitly given by the instruction.
3092 (macrolet ((define-regular-sse-inst (name prefix opcode)
3093 `(define-instruction ,name (segment dst src)
3095 ',(sse-inst-printer-list 'xmm-xmm/mem prefix opcode))
3097 (emit-regular-sse-inst segment dst src ,prefix ,opcode)))))
3099 (define-regular-sse-inst andpd #x66 #x54)
3100 (define-regular-sse-inst andps nil #x54)
3101 (define-regular-sse-inst andnpd #x66 #x55)
3102 (define-regular-sse-inst andnps nil #x55)
3103 (define-regular-sse-inst orpd #x66 #x56)
3104 (define-regular-sse-inst orps nil #x56)
3105 (define-regular-sse-inst pand #x66 #xdb)
3106 (define-regular-sse-inst pandn #x66 #xdf)
3107 (define-regular-sse-inst por #x66 #xeb)
3108 (define-regular-sse-inst pxor #x66 #xef)
3109 (define-regular-sse-inst xorpd #x66 #x57)
3110 (define-regular-sse-inst xorps nil #x57)
3112 (define-regular-sse-inst comisd #x66 #x2f)
3113 (define-regular-sse-inst comiss nil #x2f)
3114 (define-regular-sse-inst ucomisd #x66 #x2e)
3115 (define-regular-sse-inst ucomiss nil #x2e)
3116 ;; integer comparison
3117 (define-regular-sse-inst pcmpeqb #x66 #x74)
3118 (define-regular-sse-inst pcmpeqw #x66 #x75)
3119 (define-regular-sse-inst pcmpeqd #x66 #x76)
3120 (define-regular-sse-inst pcmpgtb #x66 #x64)
3121 (define-regular-sse-inst pcmpgtw #x66 #x65)
3122 (define-regular-sse-inst pcmpgtd #x66 #x66)
3124 (define-regular-sse-inst maxpd #x66 #x5f)
3125 (define-regular-sse-inst maxps nil #x5f)
3126 (define-regular-sse-inst maxsd #xf2 #x5f)
3127 (define-regular-sse-inst maxss #xf3 #x5f)
3128 (define-regular-sse-inst minpd #x66 #x5d)
3129 (define-regular-sse-inst minps nil #x5d)
3130 (define-regular-sse-inst minsd #xf2 #x5d)
3131 (define-regular-sse-inst minss #xf3 #x5d)
3133 (define-regular-sse-inst pmaxsw #x66 #xee)
3134 (define-regular-sse-inst pmaxub #x66 #xde)
3135 (define-regular-sse-inst pminsw #x66 #xea)
3136 (define-regular-sse-inst pminub #x66 #xda)
3138 (define-regular-sse-inst addpd #x66 #x58)
3139 (define-regular-sse-inst addps nil #x58)
3140 (define-regular-sse-inst addsd #xf2 #x58)
3141 (define-regular-sse-inst addss #xf3 #x58)
3142 (define-regular-sse-inst divpd #x66 #x5e)
3143 (define-regular-sse-inst divps nil #x5e)
3144 (define-regular-sse-inst divsd #xf2 #x5e)
3145 (define-regular-sse-inst divss #xf3 #x5e)
3146 (define-regular-sse-inst mulpd #x66 #x59)
3147 (define-regular-sse-inst mulps nil #x59)
3148 (define-regular-sse-inst mulsd #xf2 #x59)
3149 (define-regular-sse-inst mulss #xf3 #x59)
3150 (define-regular-sse-inst rcpps nil #x53)
3151 (define-regular-sse-inst rcpss #xf3 #x53)
3152 (define-regular-sse-inst rsqrtps nil #x52)
3153 (define-regular-sse-inst rsqrtss #xf3 #x52)
3154 (define-regular-sse-inst sqrtpd #x66 #x51)
3155 (define-regular-sse-inst sqrtps nil #x51)
3156 (define-regular-sse-inst sqrtsd #xf2 #x51)
3157 (define-regular-sse-inst sqrtss #xf3 #x51)
3158 (define-regular-sse-inst subpd #x66 #x5c)
3159 (define-regular-sse-inst subps nil #x5c)
3160 (define-regular-sse-inst subsd #xf2 #x5c)
3161 (define-regular-sse-inst subss #xf3 #x5c)
3162 (define-regular-sse-inst unpckhpd #x66 #x15)
3163 (define-regular-sse-inst unpckhps nil #x15)
3164 (define-regular-sse-inst unpcklpd #x66 #x14)
3165 (define-regular-sse-inst unpcklps nil #x14)
3166 ;; integer arithmetic
3167 (define-regular-sse-inst paddb #x66 #xfc)
3168 (define-regular-sse-inst paddw #x66 #xfd)
3169 (define-regular-sse-inst paddd #x66 #xfe)
3170 (define-regular-sse-inst paddq #x66 #xd4)
3171 (define-regular-sse-inst paddsb #x66 #xec)
3172 (define-regular-sse-inst paddsw #x66 #xed)
3173 (define-regular-sse-inst paddusb #x66 #xdc)
3174 (define-regular-sse-inst paddusw #x66 #xdd)
3175 (define-regular-sse-inst pavgb #x66 #xe0)
3176 (define-regular-sse-inst pavgw #x66 #xe3)
3177 (define-regular-sse-inst pmaddwd #x66 #xf5)
3178 (define-regular-sse-inst pmulhuw #x66 #xe4)
3179 (define-regular-sse-inst pmulhw #x66 #xe5)
3180 (define-regular-sse-inst pmullw #x66 #xd5)
3181 (define-regular-sse-inst pmuludq #x66 #xf4)
3182 (define-regular-sse-inst psadbw #x66 #xf6)
3183 (define-regular-sse-inst psllw #x66 #xf1)
3184 (define-regular-sse-inst pslld #x66 #xf2)
3185 (define-regular-sse-inst psllq #x66 #xf3)
3186 (define-regular-sse-inst psraw #x66 #xe1)
3187 (define-regular-sse-inst psrad #x66 #xe2)
3188 (define-regular-sse-inst psrlw #x66 #xd1)
3189 (define-regular-sse-inst psrld #x66 #xd2)
3190 (define-regular-sse-inst psrlq #x66 #xd3)
3191 (define-regular-sse-inst psubb #x66 #xf8)
3192 (define-regular-sse-inst psubw #x66 #xf9)
3193 (define-regular-sse-inst psubd #x66 #xfa)
3194 (define-regular-sse-inst psubq #x66 #xfb)
3195 (define-regular-sse-inst psubsb #x66 #xe8)
3196 (define-regular-sse-inst psubsw #x66 #xe9)
3197 (define-regular-sse-inst psubusb #x66 #xd8)
3198 (define-regular-sse-inst psubusw #x66 #xd9)
3200 (define-regular-sse-inst cvtdq2pd #xf3 #xe6)
3201 (define-regular-sse-inst cvtdq2ps nil #x5b)
3202 (define-regular-sse-inst cvtpd2dq #xf2 #xe6)
3203 (define-regular-sse-inst cvtpd2ps #x66 #x5a)
3204 (define-regular-sse-inst cvtps2dq #x66 #x5b)
3205 (define-regular-sse-inst cvtps2pd nil #x5a)
3206 (define-regular-sse-inst cvtsd2ss #xf2 #x5a)
3207 (define-regular-sse-inst cvtss2sd #xf3 #x5a)
3208 (define-regular-sse-inst cvttpd2dq #x66 #xe6)
3209 (define-regular-sse-inst cvttps2dq #xf3 #x5b)
3211 (define-regular-sse-inst packsswb #x66 #x63)
3212 (define-regular-sse-inst packssdw #x66 #x6b)
3213 (define-regular-sse-inst packuswb #x66 #x67)
3214 (define-regular-sse-inst punpckhbw #x66 #x68)
3215 (define-regular-sse-inst punpckhwd #x66 #x69)
3216 (define-regular-sse-inst punpckhdq #x66 #x6a)
3217 (define-regular-sse-inst punpckhqdq #x66 #x6d)
3218 (define-regular-sse-inst punpcklbw #x66 #x60)
3219 (define-regular-sse-inst punpcklwd #x66 #x61)
3220 (define-regular-sse-inst punpckldq #x66 #x62)
3221 (define-regular-sse-inst punpcklqdq #x66 #x6c))
3223 (macrolet ((define-xmm-shuffle-sse-inst (name prefix opcode n-bits radix)
3224 (let ((shuffle-pattern
3225 (intern (format nil "SSE-SHUFFLE-PATTERN-~D-~D"
3227 `(define-instruction ,name (segment dst src pattern)
3229 ',(sse-inst-printer-list
3230 'xmm-xmm/mem prefix opcode
3231 :more-fields `((imm nil :type ,shuffle-pattern))
3232 :printer '(:name :tab reg ", " reg/mem ", " imm)))
3235 (aver (typep pattern '(unsigned-byte ,n-bits)))
3236 (emit-regular-sse-inst segment dst src ,prefix ,opcode
3238 (emit-byte segment pattern))))))
3239 (define-xmm-shuffle-sse-inst pshufd #x66 #x70 8 4)
3240 (define-xmm-shuffle-sse-inst pshufhw #xf3 #x70 8 4)
3241 (define-xmm-shuffle-sse-inst pshuflw #xf2 #x70 8 4)
3242 (define-xmm-shuffle-sse-inst shufpd #x66 #xc6 2 2)
3243 (define-xmm-shuffle-sse-inst shufps nil #xc6 8 4))
3245 ;; MASKMOVDQU (dst is DS:RDI)
3246 (define-instruction maskmovdqu (segment src mask)
3248 (sse-inst-printer-list 'xmm-xmm/mem #x66 #xf7))
3250 (aver (xmm-register-p src))
3251 (aver (xmm-register-p mask))
3252 (emit-regular-sse-inst segment src mask #x66 #xf7)))
3254 (macrolet ((define-comparison-sse-inst (name prefix opcode
3255 name-prefix name-suffix)
3256 `(define-instruction ,name (segment op x y)
3258 ',(sse-inst-printer-list
3259 'xmm-xmm/mem prefix opcode
3260 :more-fields '((imm nil :type sse-condition-code))
3261 :printer `(,name-prefix imm ,name-suffix
3262 :tab reg ", " reg/mem)))
3264 (let ((code (position op *sse-conditions*)))
3266 (emit-regular-sse-inst segment x y ,prefix ,opcode
3268 (emit-byte segment code))))))
3269 (define-comparison-sse-inst cmppd #x66 #xc2 "CMP" "PD")
3270 (define-comparison-sse-inst cmpps nil #xc2 "CMP" "PS")
3271 (define-comparison-sse-inst cmpsd #xf2 #xc2 "CMP" "SD")
3272 (define-comparison-sse-inst cmpss #xf3 #xc2 "CMP" "SS"))
3275 (macrolet ((define-movsd/ss-sse-inst (name prefix)
3276 `(define-instruction ,name (segment dst src)
3278 ',(sse-inst-printer-list 'xmm-xmm/mem-dir
3281 (cond ((xmm-register-p dst)
3282 (emit-sse-inst segment dst src ,prefix #x10
3283 :operand-size :do-not-set))
3285 (aver (xmm-register-p src))
3286 (emit-sse-inst segment src dst ,prefix #x11
3287 :operand-size :do-not-set)))))))
3288 (define-movsd/ss-sse-inst movsd #xf2)
3289 (define-movsd/ss-sse-inst movss #xf3))
3292 (macrolet ((define-mov-sse-inst (name prefix opcode-from opcode-to
3293 &key force-to-mem reg-reg-name)
3296 `(define-instruction ,reg-reg-name (segment dst src)
3298 (aver (xmm-register-p dst))
3299 (aver (xmm-register-p src))
3300 (emit-regular-sse-inst segment dst src
3301 ,prefix ,opcode-from))))
3302 (define-instruction ,name (segment dst src)
3304 '(,@(when opcode-from
3305 (sse-inst-printer-list
3306 'xmm-xmm/mem prefix opcode-from))
3307 ,@(sse-inst-printer-list
3308 'xmm-xmm/mem prefix opcode-to
3309 :printer '(:name :tab reg/mem ", " reg))))
3311 (cond ,@(when opcode-from
3312 `(((xmm-register-p dst)
3314 `(aver (not (or (register-p src)
3315 (xmm-register-p src)))))
3316 (emit-regular-sse-inst
3317 segment dst src ,prefix ,opcode-from))))
3319 (aver (xmm-register-p src))
3321 `(aver (not (or (register-p dst)
3322 (xmm-register-p dst)))))
3323 (emit-regular-sse-inst segment src dst
3324 ,prefix ,opcode-to))))))))
3326 (define-mov-sse-inst movapd #x66 #x28 #x29)
3327 (define-mov-sse-inst movaps nil #x28 #x29)
3328 (define-mov-sse-inst movdqa #x66 #x6f #x7f)
3329 (define-mov-sse-inst movdqu #xf3 #x6f #x7f)
3332 (define-mov-sse-inst movntdq #x66 nil #xe7 :force-to-mem t)
3333 (define-mov-sse-inst movntpd #x66 nil #x2b :force-to-mem t)
3334 (define-mov-sse-inst movntps nil nil #x2b :force-to-mem t)
3336 ;; use movhps for movlhps and movlps for movhlps
3337 (define-mov-sse-inst movhpd #x66 #x16 #x17 :force-to-mem t)
3338 (define-mov-sse-inst movhps nil #x16 #x17 :reg-reg-name movlhps)
3339 (define-mov-sse-inst movlpd #x66 #x12 #x13 :force-to-mem t)
3340 (define-mov-sse-inst movlps nil #x12 #x13 :reg-reg-name movhlps)
3341 (define-mov-sse-inst movupd #x66 #x10 #x11)
3342 (define-mov-sse-inst movups nil #x10 #x11))
3345 (define-instruction movq (segment dst src)
3348 (sse-inst-printer-list 'xmm-xmm/mem #xf3 #x7e)
3349 (sse-inst-printer-list 'xmm-xmm/mem #x66 #xd6
3350 :printer '(:name :tab reg/mem ", " reg))))
3352 (cond ((xmm-register-p dst)
3353 (emit-sse-inst segment dst src #xf3 #x7e
3354 :operand-size :do-not-set))
3356 (aver (xmm-register-p src))
3357 (emit-sse-inst segment src dst #x66 #xd6
3358 :operand-size :do-not-set)))))
3360 ;;; Instructions having an XMM register as the destination operand
3361 ;;; and a general-purpose register or a memory location as the source
3362 ;;; operand. The operand size is calculated from the source operand.
3364 ;;; MOVD - Move a 32- or 64-bit value from a general-purpose register or
3365 ;;; a memory location to the low order 32 or 64 bits of an XMM register
3366 ;;; with zero extension or vice versa.
3367 ;;; We do not support the MMX version of this instruction.
3368 (define-instruction movd (segment dst src)
3371 (sse-inst-printer-list 'xmm-reg/mem #x66 #x6e)
3372 (sse-inst-printer-list 'xmm-reg/mem #x66 #x7e
3373 :printer '(:name :tab reg/mem ", " reg))))
3375 (cond ((xmm-register-p dst)
3376 (emit-sse-inst segment dst src #x66 #x6e))
3378 (aver (xmm-register-p src))
3379 (emit-sse-inst segment src dst #x66 #x7e)))))
3381 (define-instruction pinsrw (segment dst src imm)
3383 (sse-inst-printer-list
3384 'xmm-reg/mem #x66 #xc4
3385 :more-fields '((imm nil :type imm-byte))
3386 :printer '(:name :tab reg ", " reg/mem ", " imm)))
3388 (aver (xmm-register-p dst))
3389 (let ((src-size (operand-size src)))
3390 (aver (or (not (register-p src))
3391 (eq src-size :qword) (eq src-size :dword)))
3392 (emit-sse-inst segment dst src #x66 #xc4
3393 :operand-size (if (register-p src) src-size :do-not-set)
3394 :remaining-bytes 1))
3395 (emit-byte segment imm)))
3397 (define-instruction pextrw (segment dst src imm)
3399 (sse-inst-printer-list
3400 'reg-xmm/mem #x66 #xc5
3401 :more-fields '((imm nil :type imm-byte))
3402 :printer '(:name :tab reg ", " reg/mem ", " imm)))
3404 (aver (xmm-register-p src))
3405 (aver (register-p dst))
3406 (let ((dst-size (operand-size dst)))
3407 (aver (or (eq dst-size :qword) (eq dst-size :dword)))
3408 (emit-sse-inst segment dst src #x66 #xc5
3409 :operand-size dst-size
3410 :remaining-bytes 1))
3411 (emit-byte segment imm)))
3413 (macrolet ((define-integer-source-sse-inst (name prefix opcode &key mem-only)
3414 `(define-instruction ,name (segment dst src)
3416 ',(sse-inst-printer-list 'xmm-reg/mem prefix opcode))
3418 (aver (xmm-register-p dst))
3420 `(aver (not (or (register-p src)
3421 (xmm-register-p src)))))
3422 (let ((src-size (operand-size src)))
3423 (aver (or (eq src-size :qword) (eq src-size :dword))))
3424 (emit-sse-inst segment dst src ,prefix ,opcode)))))
3425 (define-integer-source-sse-inst cvtsi2sd #xf2 #x2a)
3426 (define-integer-source-sse-inst cvtsi2ss #xf3 #x2a)
3427 ;; FIXME: memory operand is always a QWORD
3428 (define-integer-source-sse-inst cvtpi2pd #x66 #x2a :mem-only t)
3429 (define-integer-source-sse-inst cvtpi2ps nil #x2a :mem-only t))
3431 ;;; Instructions having a general-purpose register as the destination
3432 ;;; operand and an XMM register or a memory location as the source
3433 ;;; operand. The operand size is calculated from the destination
3436 (macrolet ((define-gpr-destination-sse-inst (name prefix opcode &key reg-only)
3437 `(define-instruction ,name (segment dst src)
3439 ',(sse-inst-printer-list 'reg-xmm/mem prefix opcode))
3441 (aver (register-p dst))
3443 `(aver (xmm-register-p src)))
3444 (let ((dst-size (operand-size dst)))
3445 (aver (or (eq dst-size :qword) (eq dst-size :dword)))
3446 (emit-sse-inst segment dst src ,prefix ,opcode
3447 :operand-size dst-size))))))
3448 (define-gpr-destination-sse-inst cvtsd2si #xf2 #x2d)
3449 (define-gpr-destination-sse-inst cvtss2si #xf3 #x2d)
3450 (define-gpr-destination-sse-inst cvttsd2si #xf2 #x2c)
3451 (define-gpr-destination-sse-inst cvttss2si #xf3 #x2c)
3452 (define-gpr-destination-sse-inst movmskpd #x66 #x50 :reg-only t)
3453 (define-gpr-destination-sse-inst movmskps nil #x50 :reg-only t)
3454 (define-gpr-destination-sse-inst pmovmskb #x66 #xd7 :reg-only t))
3456 ;;; Other SSE instructions
3458 ;; FIXME: is that right!?
3459 (define-instruction movnti (segment dst src)
3460 (:printer ext-reg-reg/mem-no-width ((op #xc3)))
3461 (:printer rex-ext-reg-reg/mem-no-width ((op #xc3)))
3463 (aver (not (or (register-p dst)
3464 (xmm-register-p dst))))
3465 (aver (register-p src))
3466 (maybe-emit-rex-for-ea segment src dst)
3467 (emit-byte segment #x0f)
3468 (emit-byte segment #xc3)
3469 (emit-ea segment dst (reg-tn-encoding src))))
3471 (define-instruction prefetch (segment type src)
3472 (:printer ext-reg/mem-no-width ((op '(#x18 0)))
3473 '("PREFETCHNTA" :tab reg/mem))
3474 (:printer ext-reg/mem-no-width ((op '(#x18 1)))
3475 '("PREFETCHT0" :tab reg/mem))
3476 (:printer ext-reg/mem-no-width ((op '(#x18 2)))
3477 '("PREFETCHT1" :tab reg/mem))
3478 (:printer ext-reg/mem-no-width ((op '(#x18 3)))
3479 '("PREFETCHT2" :tab reg/mem))
3480 (:printer rex-ext-reg/mem-no-width ((op '(#x18 0)))
3481 '("PREFETCHNTA" :tab reg/mem))
3482 (:printer rex-ext-reg/mem-no-width ((op '(#x18 1)))
3483 '("PREFETCHT0" :tab reg/mem))
3484 (:printer rex-ext-reg/mem-no-width ((op '(#x18 2)))
3485 '("PREFETCHT1" :tab reg/mem))
3486 (:printer rex-ext-reg/mem-no-width ((op '(#x18 3)))
3487 '("PREFETCHT2" :tab reg/mem))
3489 (aver (not (or (register-p src)
3490 (xmm-register-p src))))
3491 (aver (eq (operand-size src) :byte))
3492 (let ((type (position type #(:nta :t0 :t1 :t2))))
3494 (maybe-emit-rex-for-ea segment src nil)
3495 (emit-byte segment #x0f)
3496 (emit-byte segment #x18)
3497 (emit-ea segment src type))))
3499 (define-instruction clflush (segment src)
3500 (:printer ext-reg/mem-no-width ((op '(#xae 7))))
3501 (:printer rex-ext-reg/mem-no-width ((op '(#xae 7))))
3503 (aver (not (or (register-p src)
3504 (xmm-register-p src))))
3505 (aver (eq (operand-size src) :byte))
3506 (maybe-emit-rex-for-ea segment src nil)
3507 (emit-byte segment #x0f)
3508 (emit-byte segment #xae)
3509 (emit-ea segment src 7)))
3511 (macrolet ((define-fence-instruction (name last-byte)
3512 `(define-instruction ,name (segment)
3513 (:printer three-bytes ((op '(#x0f #xae ,last-byte))))
3515 (emit-byte segment #x0f)
3516 (emit-byte segment #xae)
3517 (emit-byte segment ,last-byte)))))
3518 (define-fence-instruction lfence #b11101000)
3519 (define-fence-instruction mfence #b11110000)
3520 (define-fence-instruction sfence #b11111000))
3522 (define-instruction pause (segment)
3523 (:printer two-bytes ((op '(#xf3 #x90))))
3525 (emit-byte segment #xf3)
3526 (emit-byte segment #x90)))
3528 (define-instruction ldmxcsr (segment src)
3529 (:printer ext-reg/mem-no-width ((op '(#xae 2))))
3530 (:printer rex-ext-reg/mem-no-width ((op '(#xae 2))))
3532 (aver (not (or (register-p src)
3533 (xmm-register-p src))))
3534 (aver (eq (operand-size src) :dword))
3535 (maybe-emit-rex-for-ea segment src nil)
3536 (emit-byte segment #x0f)
3537 (emit-byte segment #xae)
3538 (emit-ea segment src 2)))
3540 (define-instruction stmxcsr (segment dst)
3541 (:printer ext-reg/mem-no-width ((op '(#xae 3))))
3542 (:printer rex-ext-reg/mem-no-width ((op '(#xae 3))))
3544 (aver (not (or (register-p dst)
3545 (xmm-register-p dst))))
3546 (aver (eq (operand-size dst) :dword))
3547 (maybe-emit-rex-for-ea segment dst nil)
3548 (emit-byte segment #x0f)
3549 (emit-byte segment #xae)
3550 (emit-ea segment dst 3)))
3554 (define-instruction cpuid (segment)
3555 (:printer two-bytes ((op '(#b00001111 #b10100010))))
3557 (emit-byte segment #b00001111)
3558 (emit-byte segment #b10100010)))
3560 (define-instruction rdtsc (segment)
3561 (:printer two-bytes ((op '(#b00001111 #b00110001))))
3563 (emit-byte segment #b00001111)
3564 (emit-byte segment #b00110001)))
3566 ;;;; Late VM definitions
3568 (defun canonicalize-inline-constant (constant &aux (alignedp nil))
3569 (let ((first (car constant)))
3570 (when (eql first :aligned)
3573 (setf first (car constant)))
3575 (single-float (setf constant (list :single-float first)))
3576 (double-float (setf constant (list :double-float first)))
3577 ((complex single-float)
3578 (setf constant (list :complex-single-float first)))
3579 ((complex double-float)
3580 (setf constant (list :complex-double-float first)))))
3581 (destructuring-bind (type value) constant
3583 ((:byte :word :dword :qword)
3584 (aver (integerp value))
3587 (aver (base-char-p value))
3588 (cons :byte (char-code value)))
3590 (aver (characterp value))
3591 (cons :dword (char-code value)))
3593 (aver (typep value 'single-float))
3594 (cons (if alignedp :oword :dword)
3595 (ldb (byte 32 0) (single-float-bits value))))
3597 (aver (typep value 'double-float))
3598 (cons (if alignedp :oword :qword)
3599 (ldb (byte 64 0) (logior (ash (double-float-high-bits value) 32)
3600 (double-float-low-bits value)))))
3601 ((:complex-single-float)
3602 (aver (typep value '(complex single-float)))
3603 (cons (if alignedp :oword :qword)
3605 (logior (ash (single-float-bits (imagpart value)) 32)
3607 (single-float-bits (realpart value)))))))
3609 (aver (integerp value))
3610 (cons :oword value))
3611 ((:complex-double-float)
3612 (aver (typep value '(complex double-float)))
3614 (logior (ash (double-float-high-bits (imagpart value)) 96)
3615 (ash (double-float-low-bits (imagpart value)) 64)
3616 (ash (ldb (byte 32 0)
3617 (double-float-high-bits (realpart value)))
3619 (double-float-low-bits (realpart value))))))))
3621 (defun inline-constant-value (constant)
3622 (let ((label (gen-label))
3623 (size (ecase (car constant)
3624 ((:byte :word :dword :qword) (car constant))
3625 ((:oword) :qword))))
3626 (values label (make-ea size
3627 :disp (make-fixup nil :code-object label)))))
3629 (defun emit-constant-segment-header (constants optimize)
3630 (declare (ignore constants))
3631 (loop repeat (if optimize 64 16) do (inst byte #x90)))
3633 (defun size-nbyte (size)
3641 (defun sort-inline-constants (constants)
3642 (stable-sort constants #'> :key (lambda (constant)
3643 (size-nbyte (caar constant)))))
3645 (defun emit-inline-constant (constant label)
3646 (let ((size (size-nbyte (car constant))))
3647 (emit-alignment (integer-length (1- size)))
3649 (let ((val (cdr constant)))
3651 do (inst byte (ldb (byte 8 0) val))
3652 (setf val (ash val -8))))))