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 (ext-reg-reg/mem-no-width 24
832 `(:name :tab reg ", " reg/mem))
833 (prefix :field (byte 8 0) :value #b00001111)
834 (op :field (byte 8 8))
835 (reg/mem :fields (list (byte 2 22) (byte 3 16))
837 (reg :field (byte 3 19) :type 'reg))
839 (sb!disassem:define-instruction-format (rex-ext-reg-reg/mem-no-width 32
841 `(:name :tab reg ", " reg/mem))
842 (rex :field (byte 4 4) :value #b0100)
843 (wrxb :field (byte 4 0) :type 'wrxb)
844 (prefix :field (byte 8 8) :value #b00001111)
845 (op :field (byte 8 16))
846 (reg/mem :fields (list (byte 2 30) (byte 3 24))
848 (reg :field (byte 3 27) :type 'reg))
850 (sb!disassem:define-instruction-format (ext-reg/mem-no-width 24
852 `(:name :tab reg/mem))
853 (prefix :field (byte 8 0) :value #b00001111)
854 (op :fields (list (byte 8 8) (byte 3 19)))
855 (reg/mem :fields (list (byte 2 22) (byte 3 16))
858 (sb!disassem:define-instruction-format (rex-ext-reg/mem-no-width 32
860 `(:name :tab reg/mem))
861 (rex :field (byte 4 4) :value #b0100)
862 (wrxb :field (byte 4 0) :type 'wrxb)
863 (prefix :field (byte 8 8) :value #b00001111)
864 (op :fields (list (byte 8 16) (byte 3 27)))
865 (reg/mem :fields (list (byte 2 30) (byte 3 24))
868 ;;; reg-no-width with #x0f prefix
869 (sb!disassem:define-instruction-format (ext-reg-no-width 16
870 :default-printer '(:name :tab reg))
871 (prefix :field (byte 8 0) :value #b00001111)
872 (op :field (byte 5 11))
873 (reg :field (byte 3 8) :type 'reg-b))
875 ;;; Same as reg/mem, but with a prefix of #b00001111
876 (sb!disassem:define-instruction-format (ext-reg/mem 24
877 :default-printer '(:name :tab reg/mem))
878 (prefix :field (byte 8 0) :value #b00001111)
879 (op :fields (list (byte 7 9) (byte 3 19)))
880 (width :field (byte 1 8) :type 'width)
881 (reg/mem :fields (list (byte 2 22) (byte 3 16))
882 :type 'sized-reg/mem)
886 (sb!disassem:define-instruction-format (ext-reg/mem-imm 24
887 :include 'ext-reg/mem
889 '(:name :tab reg/mem ", " imm))
890 (imm :type 'signed-imm-data))
892 ;;;; XMM instructions
894 ;;; All XMM instructions use an extended opcode (#x0F as the first
895 ;;; opcode byte). Therefore in the following "EXT" in the name of the
896 ;;; instruction formats refers to the formats that have an additional
897 ;;; prefix (#x66, #xF2 or #xF3).
899 ;;; Instructions having an XMM register as the destination operand
900 ;;; and an XMM register or a memory location as the source operand.
901 ;;; The size of the operands is implicitly given by the instruction.
902 (sb!disassem:define-instruction-format (xmm-xmm/mem 24
904 '(:name :tab reg ", " reg/mem))
905 (x0f :field (byte 8 0) :value #x0f)
906 (op :field (byte 8 8))
907 (reg/mem :fields (list (byte 2 22) (byte 3 16))
909 (reg :field (byte 3 19) :type 'xmmreg)
913 (sb!disassem:define-instruction-format (rex-xmm-xmm/mem 32
915 '(:name :tab reg ", " reg/mem))
916 (rex :field (byte 4 4) :value #b0100)
917 (wrxb :field (byte 4 0) :type 'wrxb)
918 (x0f :field (byte 8 8) :value #x0f)
919 (op :field (byte 8 16))
920 (reg/mem :fields (list (byte 2 30) (byte 3 24))
922 (reg :field (byte 3 27) :type 'xmmreg)
925 (sb!disassem:define-instruction-format (ext-xmm-xmm/mem 32
927 '(:name :tab reg ", " reg/mem))
928 (prefix :field (byte 8 0))
929 (x0f :field (byte 8 8) :value #x0f)
930 (op :field (byte 8 16))
931 (reg/mem :fields (list (byte 2 30) (byte 3 24))
933 (reg :field (byte 3 27) :type 'xmmreg)
936 (sb!disassem:define-instruction-format (ext-rex-xmm-xmm/mem 40
938 '(:name :tab reg ", " reg/mem))
939 (prefix :field (byte 8 0))
940 (rex :field (byte 4 12) :value #b0100)
941 (wrxb :field (byte 4 8) :type 'wrxb)
942 (x0f :field (byte 8 16) :value #x0f)
943 (op :field (byte 8 24))
944 (reg/mem :fields (list (byte 2 38) (byte 3 32))
946 (reg :field (byte 3 35) :type 'xmmreg)
949 ;;; Same as xmm-xmm/mem etc., but with direction bit.
951 (sb!disassem:define-instruction-format (ext-xmm-xmm/mem-dir 32
952 :include 'ext-xmm-xmm/mem
956 ,(swap-if 'dir 'reg ", " 'reg/mem)))
957 (op :field (byte 7 17))
958 (dir :field (byte 1 16)))
960 (sb!disassem:define-instruction-format (ext-rex-xmm-xmm/mem-dir 40
961 :include 'ext-rex-xmm-xmm/mem
965 ,(swap-if 'dir 'reg ", " 'reg/mem)))
966 (op :field (byte 7 25))
967 (dir :field (byte 1 24)))
969 ;;; Instructions having an XMM register as one operand
970 ;;; and a constant (unsigned) byte as the other.
972 (sb!disassem:define-instruction-format (ext-xmm-imm 32
974 '(:name :tab reg/mem ", " imm))
975 (prefix :field (byte 8 0))
976 (x0f :field (byte 8 8) :value #x0f)
977 (op :field (byte 8 16))
978 (/i :field (byte 3 27))
979 (b11 :field (byte 2 30) :value #b11)
980 (reg/mem :field (byte 3 24)
982 (imm :type 'imm-byte))
984 (sb!disassem:define-instruction-format (ext-rex-xmm-imm 40
986 '(:name :tab reg/mem ", " imm))
987 (prefix :field (byte 8 0))
988 (rex :field (byte 4 12) :value #b0100)
989 (wrxb :field (byte 4 8) :type 'wrxb)
990 (x0f :field (byte 8 16) :value #x0f)
991 (op :field (byte 8 24))
992 (/i :field (byte 3 35))
993 (b11 :field (byte 2 38) :value #b11)
994 (reg/mem :field (byte 3 32)
996 (imm :type 'imm-byte))
998 ;;; Instructions having an XMM register as one operand and a general-
999 ;;; -purpose register or a memory location as the other operand.
1001 (sb!disassem:define-instruction-format (xmm-reg/mem 24
1003 '(:name :tab reg ", " reg/mem))
1004 (x0f :field (byte 8 0) :value #x0f)
1005 (op :field (byte 8 8))
1006 (reg/mem :fields (list (byte 2 22) (byte 3 16))
1007 :type 'sized-reg/mem)
1008 (reg :field (byte 3 19) :type 'xmmreg))
1010 (sb!disassem:define-instruction-format (rex-xmm-reg/mem 32
1012 '(:name :tab reg ", " reg/mem))
1013 (rex :field (byte 4 4) :value #b0100)
1014 (wrxb :field (byte 4 0) :type 'wrxb)
1015 (x0f :field (byte 8 8) :value #x0f)
1016 (op :field (byte 8 16))
1017 (reg/mem :fields (list (byte 2 30) (byte 3 24))
1018 :type 'sized-reg/mem)
1019 (reg :field (byte 3 27) :type 'xmmreg))
1021 (sb!disassem:define-instruction-format (ext-xmm-reg/mem 32
1023 '(:name :tab reg ", " reg/mem))
1024 (prefix :field (byte 8 0))
1025 (x0f :field (byte 8 8) :value #x0f)
1026 (op :field (byte 8 16))
1027 (reg/mem :fields (list (byte 2 30) (byte 3 24))
1028 :type 'sized-reg/mem)
1029 (reg :field (byte 3 27) :type 'xmmreg))
1031 (sb!disassem:define-instruction-format (ext-rex-xmm-reg/mem 40
1033 '(:name :tab reg ", " reg/mem))
1034 (prefix :field (byte 8 0))
1035 (rex :field (byte 4 12) :value #b0100)
1036 (wrxb :field (byte 4 8) :type 'wrxb)
1037 (x0f :field (byte 8 16) :value #x0f)
1038 (op :field (byte 8 24))
1039 (reg/mem :fields (list (byte 2 38) (byte 3 32))
1040 :type 'sized-reg/mem)
1041 (reg :field (byte 3 35) :type 'xmmreg))
1043 ;;; Instructions having a general-purpose register as one operand and an
1044 ;;; XMM register or a memory location as the other operand.
1046 (sb!disassem:define-instruction-format (reg-xmm/mem 24
1048 '(:name :tab reg ", " reg/mem))
1049 (x0f :field (byte 8 0) :value #x0f)
1050 (op :field (byte 8 8))
1051 (reg/mem :fields (list (byte 2 22) (byte 3 16))
1052 :type 'sized-xmmreg/mem)
1053 (reg :field (byte 3 19) :type 'reg))
1055 (sb!disassem:define-instruction-format (rex-reg-xmm/mem 32
1057 '(:name :tab reg ", " reg/mem))
1058 (rex :field (byte 4 4) :value #b0100)
1059 (wrxb :field (byte 4 0) :type 'wrxb)
1060 (x0f :field (byte 8 8) :value #x0f)
1061 (op :field (byte 8 16))
1062 (reg/mem :fields (list (byte 2 30) (byte 3 24))
1063 :type 'sized-xmmreg/mem)
1064 (reg :field (byte 3 27) :type 'reg))
1066 (sb!disassem:define-instruction-format (ext-reg-xmm/mem 32
1068 '(:name :tab reg ", " reg/mem))
1069 (prefix :field (byte 8 0))
1070 (x0f :field (byte 8 8) :value #x0f)
1071 (op :field (byte 8 16))
1072 (reg/mem :fields (list (byte 2 30) (byte 3 24))
1073 :type 'sized-xmmreg/mem)
1074 (reg :field (byte 3 27) :type 'reg))
1076 (sb!disassem:define-instruction-format (ext-rex-reg-xmm/mem 40
1078 '(:name :tab reg ", " reg/mem))
1079 (prefix :field (byte 8 0))
1080 (rex :field (byte 4 12) :value #b0100)
1081 (wrxb :field (byte 4 8) :type 'wrxb)
1082 (x0f :field (byte 8 16) :value #x0f)
1083 (op :field (byte 8 24))
1084 (reg/mem :fields (list (byte 2 38) (byte 3 32))
1085 :type 'sized-xmmreg/mem)
1086 (reg :field (byte 3 35) :type 'reg))
1088 ;; XMM comparison instruction
1090 (eval-when (:compile-toplevel :load-toplevel :execute)
1091 (defparameter *sse-conditions* #(:eq :lt :le :unord :neq :nlt :nle :ord)))
1093 (sb!disassem:define-arg-type sse-condition-code
1094 ;; Inherit the prefilter from IMM-BYTE to READ-SUFFIX the byte.
1096 :printer *sse-conditions*)
1098 (sb!disassem:define-instruction-format (string-op 8
1100 :default-printer '(:name width)))
1102 (sb!disassem:define-instruction-format (rex-string-op 16
1103 :include 'rex-simple
1104 :default-printer '(:name width)))
1106 (sb!disassem:define-instruction-format (short-cond-jump 16)
1107 (op :field (byte 4 4))
1108 (cc :field (byte 4 0) :type 'condition-code)
1109 (label :field (byte 8 8) :type 'displacement))
1111 (sb!disassem:define-instruction-format (short-jump 16
1112 :default-printer '(:name :tab label))
1113 (const :field (byte 4 4) :value #b1110)
1114 (op :field (byte 4 0))
1115 (label :field (byte 8 8) :type 'displacement))
1117 (sb!disassem:define-instruction-format (near-cond-jump 16)
1118 (op :fields (list (byte 8 0) (byte 4 12)) :value '(#b00001111 #b1000))
1119 (cc :field (byte 4 8) :type 'condition-code)
1120 ;; The disassembler currently doesn't let you have an instruction > 32 bits
1121 ;; long, so we fake it by using a prefilter to read the offset.
1122 (label :type 'displacement
1123 :prefilter (lambda (value dstate)
1124 (declare (ignore value)) ; always nil anyway
1125 (sb!disassem:read-signed-suffix 32 dstate))))
1127 (sb!disassem:define-instruction-format (near-jump 8
1128 :default-printer '(:name :tab label))
1129 (op :field (byte 8 0))
1130 ;; The disassembler currently doesn't let you have an instruction > 32 bits
1131 ;; long, so we fake it by using a prefilter to read the address.
1132 (label :type 'displacement
1133 :prefilter (lambda (value dstate)
1134 (declare (ignore value)) ; always nil anyway
1135 (sb!disassem:read-signed-suffix 32 dstate))))
1138 (sb!disassem:define-instruction-format (cond-set 24
1139 :default-printer '('set cc :tab reg/mem))
1140 (prefix :field (byte 8 0) :value #b00001111)
1141 (op :field (byte 4 12) :value #b1001)
1142 (cc :field (byte 4 8) :type 'condition-code)
1143 (reg/mem :fields (list (byte 2 22) (byte 3 16))
1144 :type 'sized-byte-reg/mem)
1145 (reg :field (byte 3 19) :value #b000))
1147 (sb!disassem:define-instruction-format (cond-move 24
1149 '('cmov cc :tab reg ", " reg/mem))
1150 (prefix :field (byte 8 0) :value #b00001111)
1151 (op :field (byte 4 12) :value #b0100)
1152 (cc :field (byte 4 8) :type 'condition-code)
1153 (reg/mem :fields (list (byte 2 22) (byte 3 16))
1155 (reg :field (byte 3 19) :type 'reg))
1157 (sb!disassem:define-instruction-format (rex-cond-move 32
1159 '('cmov cc :tab reg ", " reg/mem))
1160 (rex :field (byte 4 4) :value #b0100)
1161 (wrxb :field (byte 4 0) :type 'wrxb)
1162 (prefix :field (byte 8 8) :value #b00001111)
1163 (op :field (byte 4 20) :value #b0100)
1164 (cc :field (byte 4 16) :type 'condition-code)
1165 (reg/mem :fields (list (byte 2 30) (byte 3 24))
1167 (reg :field (byte 3 27) :type 'reg))
1169 (sb!disassem:define-instruction-format (enter-format 32
1170 :default-printer '(:name
1172 (:unless (:constant 0)
1174 (op :field (byte 8 0))
1175 (disp :field (byte 16 8))
1176 (level :field (byte 8 24)))
1178 ;;; Single byte instruction with an immediate byte argument.
1179 (sb!disassem:define-instruction-format (byte-imm 16
1180 :default-printer '(:name :tab code))
1181 (op :field (byte 8 0))
1182 (code :field (byte 8 8)))
1184 ;;; Two byte instruction with an immediate byte argument.
1186 (sb!disassem:define-instruction-format (word-imm 24
1187 :default-printer '(:name :tab code))
1188 (op :field (byte 16 0))
1189 (code :field (byte 8 16)))
1192 ;;;; primitive emitters
1194 (define-bitfield-emitter emit-word 16
1197 (define-bitfield-emitter emit-dword 32
1200 ;;; Most uses of dwords are as displacements or as immediate values in
1201 ;;; 64-bit operations. In these cases they are sign-extended to 64 bits.
1202 ;;; EMIT-DWORD is unsuitable there because it accepts values of type
1203 ;;; (OR (SIGNED-BYTE 32) (UNSIGNED-BYTE 32)), so we provide a more
1204 ;;; restricted emitter here.
1205 (defun emit-signed-dword (segment value)
1206 (declare (type segment segment)
1207 (type (signed-byte 32) value))
1208 (declare (inline emit-dword))
1209 (emit-dword segment value))
1211 (define-bitfield-emitter emit-qword 64
1214 (define-bitfield-emitter emit-byte-with-reg 8
1215 (byte 5 3) (byte 3 0))
1217 (define-bitfield-emitter emit-mod-reg-r/m-byte 8
1218 (byte 2 6) (byte 3 3) (byte 3 0))
1220 (define-bitfield-emitter emit-sib-byte 8
1221 (byte 2 6) (byte 3 3) (byte 3 0))
1223 (define-bitfield-emitter emit-rex-byte 8
1224 (byte 4 4) (byte 1 3) (byte 1 2) (byte 1 1) (byte 1 0))
1230 (defun emit-absolute-fixup (segment fixup &optional quad-p)
1231 (note-fixup segment (if quad-p :absolute64 :absolute) fixup)
1232 (let ((offset (fixup-offset fixup)))
1233 (if (label-p offset)
1234 (emit-back-patch segment
1236 (lambda (segment posn)
1237 (declare (ignore posn))
1238 (let ((val (- (+ (component-header-length)
1239 (or (label-position offset)
1241 other-pointer-lowtag)))
1243 (emit-qword segment val)
1244 (emit-signed-dword segment val)))))
1246 (emit-qword segment (or offset 0))
1247 (emit-signed-dword segment (or offset 0))))))
1249 (defun emit-relative-fixup (segment fixup)
1250 (note-fixup segment :relative fixup)
1251 (emit-signed-dword segment (or (fixup-offset fixup) 0)))
1254 ;;;; the effective-address (ea) structure
1256 (defun reg-tn-encoding (tn)
1257 (declare (type tn tn))
1258 ;; ea only has space for three bits of register number: regs r8
1259 ;; and up are selected by a REX prefix byte which caller is responsible
1260 ;; for having emitted where necessary already
1261 (ecase (sb-name (sc-sb (tn-sc tn)))
1263 (let ((offset (mod (tn-offset tn) 16)))
1264 (logior (ash (logand offset 1) 2)
1267 (mod (tn-offset tn) 8))))
1269 (defstruct (ea (:constructor make-ea (size &key base index scale disp))
1271 ;; note that we can represent an EA with a QWORD size, but EMIT-EA
1272 ;; can't actually emit it on its own: caller also needs to emit REX
1274 (size nil :type (member :byte :word :dword :qword))
1275 (base nil :type (or tn null))
1276 (index nil :type (or tn null))
1277 (scale 1 :type (member 1 2 4 8))
1278 (disp 0 :type (or (unsigned-byte 32) (signed-byte 32) fixup)))
1279 (def!method print-object ((ea ea) stream)
1280 (cond ((or *print-escape* *print-readably*)
1281 (print-unreadable-object (ea stream :type t)
1283 "~S~@[ base=~S~]~@[ index=~S~]~@[ scale=~S~]~@[ disp=~S~]"
1287 (let ((scale (ea-scale ea)))
1288 (if (= scale 1) nil scale))
1291 (format stream "~A PTR [" (symbol-name (ea-size ea)))
1293 (write-string (sb!c::location-print-name (ea-base ea)) stream)
1295 (write-string "+" stream)))
1297 (write-string (sb!c::location-print-name (ea-index ea)) stream))
1298 (unless (= (ea-scale ea) 1)
1299 (format stream "*~A" (ea-scale ea)))
1300 (typecase (ea-disp ea)
1303 (format stream "~@D" (ea-disp ea)))
1305 (format stream "+~A" (ea-disp ea))))
1306 (write-char #\] stream))))
1308 (defun emit-constant-tn-rip (segment constant-tn reg remaining-bytes)
1309 ;; AMD64 doesn't currently have a code object register to use as a
1310 ;; base register for constant access. Instead we use RIP-relative
1311 ;; addressing. The offset from the SIMPLE-FUN-HEADER to the instruction
1312 ;; is passed to the backpatch callback. In addition we need the offset
1313 ;; from the start of the function header to the slot in the CODE-HEADER
1314 ;; that stores the constant. Since we don't know where the code header
1315 ;; starts, instead count backwards from the function header.
1316 (let* ((2comp (component-info *component-being-compiled*))
1317 (constants (ir2-component-constants 2comp))
1318 (len (length constants))
1319 ;; Both CODE-HEADER and SIMPLE-FUN-HEADER are 16-byte aligned.
1320 ;; If there are an even amount of constants, there will be
1321 ;; an extra qword of padding before the function header, which
1322 ;; needs to be adjusted for. XXX: This will break if new slots
1323 ;; are added to the code header.
1324 (offset (* (- (+ len (if (evenp len)
1327 (tn-offset constant-tn))
1329 ;; RIP-relative addressing
1330 (emit-mod-reg-r/m-byte segment #b00 reg #b101)
1331 (emit-back-patch segment
1333 (lambda (segment posn)
1334 ;; The addressing is relative to end of instruction,
1335 ;; i.e. the end of this dword. Hence the + 4.
1336 (emit-signed-dword segment
1337 (+ 4 remaining-bytes
1338 (- (+ offset posn)))))))
1341 (defun emit-label-rip (segment fixup reg remaining-bytes)
1342 (let ((label (fixup-offset fixup)))
1343 ;; RIP-relative addressing
1344 (emit-mod-reg-r/m-byte segment #b00 reg #b101)
1345 (emit-back-patch segment
1347 (lambda (segment posn)
1348 (emit-signed-dword segment
1349 (- (label-position label)
1350 (+ posn 4 remaining-bytes))))))
1353 (defun emit-ea (segment thing reg &key allow-constants (remaining-bytes 0))
1356 ;; this would be eleganter if we had a function that would create
1358 (ecase (sb-name (sc-sb (tn-sc thing)))
1359 ((registers float-registers)
1360 (emit-mod-reg-r/m-byte segment #b11 reg (reg-tn-encoding thing)))
1362 ;; Convert stack tns into an index off RBP.
1363 (let ((disp (frame-byte-offset (tn-offset thing))))
1364 (cond ((<= -128 disp 127)
1365 (emit-mod-reg-r/m-byte segment #b01 reg #b101)
1366 (emit-byte segment disp))
1368 (emit-mod-reg-r/m-byte segment #b10 reg #b101)
1369 (emit-signed-dword segment disp)))))
1371 (unless allow-constants
1374 "Constant TNs can only be directly used in MOV, PUSH, and CMP."))
1375 (emit-constant-tn-rip segment thing reg remaining-bytes))))
1377 (let* ((base (ea-base thing))
1378 (index (ea-index thing))
1379 (scale (ea-scale thing))
1380 (disp (ea-disp thing))
1381 (mod (cond ((or (null base)
1383 (not (= (reg-tn-encoding base) #b101))))
1385 ((and (fixnump disp) (<= -128 disp 127))
1389 (r/m (cond (index #b100)
1391 (t (reg-tn-encoding base)))))
1392 (when (and (fixup-p disp)
1393 (label-p (fixup-offset disp)))
1396 (return-from emit-ea (emit-ea segment disp reg
1397 :allow-constants allow-constants
1398 :remaining-bytes remaining-bytes)))
1399 (when (and (= mod 0) (= r/m #b101))
1400 ;; this is rip-relative in amd64, so we'll use a sib instead
1401 (setf r/m #b100 scale 1))
1402 (emit-mod-reg-r/m-byte segment mod reg r/m)
1404 (let ((ss (1- (integer-length scale)))
1405 (index (if (null index)
1407 (let ((index (reg-tn-encoding index)))
1409 (error "can't index off of ESP")
1411 (base (if (null base)
1413 (reg-tn-encoding base))))
1414 (emit-sib-byte segment ss index base)))
1416 (emit-byte segment disp))
1417 ((or (= mod #b10) (null base))
1419 (emit-absolute-fixup segment disp)
1420 (emit-signed-dword segment disp))))))
1422 (typecase (fixup-offset thing)
1424 (emit-label-rip segment thing reg remaining-bytes))
1426 (emit-mod-reg-r/m-byte segment #b00 reg #b100)
1427 (emit-sib-byte segment 0 #b100 #b101)
1428 (emit-absolute-fixup segment thing))))))
1430 (defun byte-reg-p (thing)
1432 (eq (sb-name (sc-sb (tn-sc thing))) 'registers)
1433 (member (sc-name (tn-sc thing)) *byte-sc-names*)
1436 (defun byte-ea-p (thing)
1438 (ea (eq (ea-size thing) :byte))
1440 (and (member (sc-name (tn-sc thing)) *byte-sc-names*) t))
1443 (defun word-reg-p (thing)
1445 (eq (sb-name (sc-sb (tn-sc thing))) 'registers)
1446 (member (sc-name (tn-sc thing)) *word-sc-names*)
1449 (defun word-ea-p (thing)
1451 (ea (eq (ea-size thing) :word))
1452 (tn (and (member (sc-name (tn-sc thing)) *word-sc-names*) t))
1455 (defun dword-reg-p (thing)
1457 (eq (sb-name (sc-sb (tn-sc thing))) 'registers)
1458 (member (sc-name (tn-sc thing)) *dword-sc-names*)
1461 (defun dword-ea-p (thing)
1463 (ea (eq (ea-size thing) :dword))
1465 (and (member (sc-name (tn-sc thing)) *dword-sc-names*) t))
1468 (defun qword-reg-p (thing)
1470 (eq (sb-name (sc-sb (tn-sc thing))) 'registers)
1471 (member (sc-name (tn-sc thing)) *qword-sc-names*)
1474 (defun qword-ea-p (thing)
1476 (ea (eq (ea-size thing) :qword))
1478 (and (member (sc-name (tn-sc thing)) *qword-sc-names*) t))
1481 ;;; Return true if THING is a general-purpose register TN.
1482 (defun register-p (thing)
1484 (eq (sb-name (sc-sb (tn-sc thing))) 'registers)))
1486 (defun accumulator-p (thing)
1487 (and (register-p thing)
1488 (= (tn-offset thing) 0)))
1490 ;;; Return true if THING is an XMM register TN.
1491 (defun xmm-register-p (thing)
1493 (eq (sb-name (sc-sb (tn-sc thing))) 'float-registers)))
1498 (def!constant +operand-size-prefix-byte+ #b01100110)
1500 (defun maybe-emit-operand-size-prefix (segment size)
1501 (unless (or (eq size :byte)
1502 (eq size :qword) ; REX prefix handles this
1503 (eq size +default-operand-size+))
1504 (emit-byte segment +operand-size-prefix-byte+)))
1506 ;;; A REX prefix must be emitted if at least one of the following
1507 ;;; conditions is true:
1508 ;; 1. The operand size is :QWORD and the default operand size of the
1509 ;; instruction is not :QWORD.
1510 ;;; 2. The instruction references an extended register.
1511 ;;; 3. The instruction references one of the byte registers SIL, DIL,
1514 ;;; Emit a REX prefix if necessary. OPERAND-SIZE is used to determine
1515 ;;; whether to set REX.W. Callers pass it explicitly as :DO-NOT-SET if
1516 ;;; this should not happen, for example because the instruction's
1517 ;;; default operand size is qword. R, X and B are NIL or TNs specifying
1518 ;;; registers the encodings of which are extended with the REX.R, REX.X
1519 ;;; and REX.B bit, respectively. To determine whether one of the byte
1520 ;;; registers is used that can only be accessed using a REX prefix, we
1521 ;;; need only to test R and B, because X is only used for the index
1522 ;;; register of an effective address and therefore never byte-sized.
1523 ;;; For R we can avoid to calculate the size of the TN because it is
1524 ;;; always OPERAND-SIZE. The size of B must be calculated here because
1525 ;;; B can be address-sized (if it is the base register of an effective
1526 ;;; address), of OPERAND-SIZE (if the instruction operates on two
1527 ;;; registers) or of some different size (in the instructions that
1528 ;;; combine arguments of different sizes: MOVZX, MOVSX, MOVSXD and
1529 ;;; several SSE instructions, e.g. CVTSD2SI). We don't distinguish
1530 ;;; between general-purpose and floating point registers for this cause
1531 ;;; because only general-purpose registers can be byte-sized at all.
1532 (defun maybe-emit-rex-prefix (segment operand-size r x b)
1533 (declare (type (member nil :byte :word :dword :qword :do-not-set)
1535 (type (or null tn) r x b))
1537 (if (and r (> (tn-offset r)
1538 ;; offset of r8 is 16, offset of xmm8 is 8
1539 (if (eq (sb-name (sc-sb (tn-sc r)))
1546 ;; Assuming R is a TN describing a general-purpose
1547 ;; register, return true if it references register
1549 (<= 8 (tn-offset r) 15)))
1550 (let ((rex-w (if (eq operand-size :qword) 1 0))
1554 (when (or (not (zerop (logior rex-w rex-r rex-x rex-b)))
1556 (eq operand-size :byte)
1559 (eq (operand-size b) :byte)
1561 (emit-rex-byte segment #b0100 rex-w rex-r rex-x rex-b)))))
1563 ;;; Emit a REX prefix if necessary. The operand size is determined from
1564 ;;; THING or can be overwritten by OPERAND-SIZE. This and REG are always
1565 ;;; passed to MAYBE-EMIT-REX-PREFIX. Additionally, if THING is an EA we
1566 ;;; pass its index and base registers, if it is a register TN, we pass
1568 ;;; In contrast to EMIT-EA above, neither stack TNs nor fixups need to
1569 ;;; be treated specially here: If THING is a stack TN, neither it nor
1570 ;;; any of its components are passed to MAYBE-EMIT-REX-PREFIX which
1571 ;;; works correctly because stack references always use RBP as the base
1572 ;;; register and never use an index register so no extended registers
1573 ;;; need to be accessed. Fixups are assembled using an addressing mode
1574 ;;; of displacement-only or RIP-plus-displacement (see EMIT-EA), so may
1575 ;;; not reference an extended register. The displacement-only addressing
1576 ;;; mode requires that REX.X is 0, which is ensured here.
1577 (defun maybe-emit-rex-for-ea (segment thing reg &key operand-size)
1578 (declare (type (or ea tn fixup) thing)
1579 (type (or null tn) reg)
1580 (type (member nil :byte :word :dword :qword :do-not-set)
1582 (let ((ea-p (ea-p thing)))
1583 (maybe-emit-rex-prefix segment
1584 (or operand-size (operand-size thing))
1586 (and ea-p (ea-index thing))
1587 (cond (ea-p (ea-base thing))
1589 (member (sb-name (sc-sb (tn-sc thing)))
1590 '(float-registers registers)))
1594 (defun operand-size (thing)
1597 ;; FIXME: might as well be COND instead of having to use #. readmacro
1598 ;; to hack up the code
1599 (case (sc-name (tn-sc thing))
1608 ;; added by jrd: float-registers is a separate size (?)
1609 ;; The only place in the code where we are called with THING
1610 ;; being a float-register is in MAYBE-EMIT-REX-PREFIX when it
1611 ;; checks whether THING is a byte register. Thus our result in
1612 ;; these cases could as well be :dword and :qword. I leave it as
1613 ;; :float and :double which is more likely to trigger an aver
1614 ;; instead of silently doing the wrong thing in case this
1615 ;; situation should change. Lutz Euler, 2005-10-23.
1618 (#.*double-sc-names*
1620 (#.*complex-sc-names*
1623 (error "can't tell the size of ~S ~S" thing (sc-name (tn-sc thing))))))
1627 ;; GNA. Guess who spelt "flavor" correctly first time round?
1628 ;; There's a strong argument in my mind to change all uses of
1629 ;; "flavor" to "kind": and similarly with some misguided uses of
1630 ;; "type" here and there. -- CSR, 2005-01-06.
1631 (case (fixup-flavor thing)
1632 ((:foreign-dataref) :qword)))
1636 (defun matching-operand-size (dst src)
1637 (let ((dst-size (operand-size dst))
1638 (src-size (operand-size src)))
1641 (if (eq dst-size src-size)
1643 (error "size mismatch: ~S is a ~S and ~S is a ~S."
1644 dst dst-size src src-size))
1648 (error "can't tell the size of either ~S or ~S" dst src)))))
1650 ;;; Except in a very few cases (MOV instructions A1, A3 and B8 - BF)
1651 ;;; we expect dword data bytes even when 64 bit work is being done.
1652 ;;; But A1 and A3 are currently unused and B8 - BF use EMIT-QWORD
1653 ;;; directly, so we emit all quad constants as dwords, additionally
1654 ;;; making sure that they survive the sign-extension to 64 bits
1656 (defun emit-sized-immediate (segment size value)
1659 (emit-byte segment value))
1661 (emit-word segment value))
1663 (emit-dword segment value))
1665 (emit-signed-dword segment value))))
1667 ;;;; general data transfer
1669 ;;; This is the part of the MOV instruction emitter that does moving
1670 ;;; of an immediate value into a qword register. We go to some length
1671 ;;; to achieve the shortest possible encoding.
1672 (defun emit-immediate-move-to-qword-register (segment dst src)
1673 (declare (type integer src))
1674 (cond ((typep src '(unsigned-byte 32))
1675 ;; We use the B8 - BF encoding with an operand size of 32 bits
1676 ;; here and let the implicit zero-extension fill the upper half
1677 ;; of the 64-bit destination register. Instruction size: five
1678 ;; or six bytes. (A REX prefix will be emitted only if the
1679 ;; destination is an extended register.)
1680 (maybe-emit-rex-prefix segment :dword nil nil dst)
1681 (emit-byte-with-reg segment #b10111 (reg-tn-encoding dst))
1682 (emit-dword segment src))
1684 (maybe-emit-rex-prefix segment :qword nil nil dst)
1685 (cond ((typep src '(signed-byte 32))
1686 ;; Use the C7 encoding that takes a 32-bit immediate and
1687 ;; sign-extends it to 64 bits. Instruction size: seven
1689 (emit-byte segment #b11000111)
1690 (emit-mod-reg-r/m-byte segment #b11 #b000
1691 (reg-tn-encoding dst))
1692 (emit-signed-dword segment src))
1693 ((<= (- (expt 2 64) (expt 2 31))
1696 ;; This triggers on positive integers of 64 bits length
1697 ;; with the most significant 33 bits being 1. We use the
1698 ;; same encoding as in the previous clause.
1699 (emit-byte segment #b11000111)
1700 (emit-mod-reg-r/m-byte segment #b11 #b000
1701 (reg-tn-encoding dst))
1702 (emit-signed-dword segment (- src (expt 2 64))))
1704 ;; We need a full 64-bit immediate. Instruction size:
1706 (emit-byte-with-reg segment #b10111 (reg-tn-encoding dst))
1707 (emit-qword segment src))))))
1709 (define-instruction mov (segment dst src)
1710 ;; immediate to register
1711 (:printer reg ((op #b1011) (imm nil :type 'signed-imm-data))
1712 '(:name :tab reg ", " imm))
1713 (:printer rex-reg ((op #b1011) (imm nil :type 'signed-imm-data-upto-qword))
1714 '(:name :tab reg ", " imm))
1715 ;; absolute mem to/from accumulator
1716 (:printer simple-dir ((op #b101000) (imm nil :type 'imm-addr))
1717 `(:name :tab ,(swap-if 'dir 'accum ", " '("[" imm "]"))))
1718 ;; register to/from register/memory
1719 (:printer reg-reg/mem-dir ((op #b100010)))
1720 (:printer rex-reg-reg/mem-dir ((op #b100010)))
1721 (:printer x66-reg-reg/mem-dir ((op #b100010)))
1722 (:printer x66-rex-reg-reg/mem-dir ((op #b100010)))
1723 ;; immediate to register/memory
1724 (:printer reg/mem-imm ((op '(#b1100011 #b000))))
1725 (:printer rex-reg/mem-imm ((op '(#b1100011 #b000))))
1728 (let ((size (matching-operand-size dst src)))
1729 (maybe-emit-operand-size-prefix segment size)
1730 (cond ((register-p dst)
1731 (cond ((integerp src)
1732 (cond ((eq size :qword)
1733 (emit-immediate-move-to-qword-register segment
1736 (maybe-emit-rex-prefix segment size nil nil dst)
1737 (emit-byte-with-reg segment
1741 (reg-tn-encoding dst))
1742 (emit-sized-immediate segment size src))))
1744 (maybe-emit-rex-for-ea segment src dst)
1749 (emit-ea segment src (reg-tn-encoding dst) :allow-constants t))))
1751 ;; C7 only deals with 32 bit immediates even if the
1752 ;; destination is a 64-bit location. The value is
1753 ;; sign-extended in this case.
1754 (maybe-emit-rex-for-ea segment dst nil)
1755 (emit-byte segment (if (eq size :byte) #b11000110 #b11000111))
1756 (emit-ea segment dst #b000)
1757 (emit-sized-immediate segment size src))
1759 (maybe-emit-rex-for-ea segment dst src)
1760 (emit-byte segment (if (eq size :byte) #b10001000 #b10001001))
1761 (emit-ea segment dst (reg-tn-encoding src)))
1763 ;; Generally we can't MOV a fixupped value into an EA, since
1764 ;; MOV on non-registers can only take a 32-bit immediate arg.
1765 ;; Make an exception for :FOREIGN fixups (pretty much just
1766 ;; the runtime asm, since other foreign calls go through the
1767 ;; the linkage table) and for linkage table references, since
1768 ;; these should always end up in low memory.
1769 (aver (or (eq (fixup-flavor src) :foreign)
1770 (eq (fixup-flavor src) :foreign-dataref)
1771 (eq (ea-size dst) :dword)))
1772 (maybe-emit-rex-for-ea segment dst nil)
1773 (emit-byte segment #b11000111)
1774 (emit-ea segment dst #b000)
1775 (emit-absolute-fixup segment src))
1777 (error "bogus arguments to MOV: ~S ~S" dst src))))))
1779 (defun emit-move-with-extension (segment dst src signed-p)
1780 (aver (register-p dst))
1781 (let ((dst-size (operand-size dst))
1782 (src-size (operand-size src))
1783 (opcode (if signed-p #b10111110 #b10110110)))
1786 (aver (eq src-size :byte))
1787 (maybe-emit-operand-size-prefix segment :word)
1788 ;; REX prefix is needed if SRC is SIL, DIL, SPL or BPL.
1789 (maybe-emit-rex-for-ea segment src dst :operand-size :word)
1790 (emit-byte segment #b00001111)
1791 (emit-byte segment opcode)
1792 (emit-ea segment src (reg-tn-encoding dst)))
1796 (maybe-emit-rex-for-ea segment src dst :operand-size dst-size)
1797 (emit-byte segment #b00001111)
1798 (emit-byte segment opcode)
1799 (emit-ea segment src (reg-tn-encoding dst)))
1801 (maybe-emit-rex-for-ea segment src dst :operand-size dst-size)
1802 (emit-byte segment #b00001111)
1803 (emit-byte segment (logior opcode 1))
1804 (emit-ea segment src (reg-tn-encoding dst)))
1806 (aver (eq dst-size :qword))
1807 ;; dst is in reg, src is in modrm
1808 (let ((ea-p (ea-p src)))
1809 (maybe-emit-rex-prefix segment (if signed-p :qword :dword) dst
1810 (and ea-p (ea-index src))
1811 (cond (ea-p (ea-base src))
1814 (emit-byte segment (if signed-p #x63 #x8b)) ;movsxd or straight mov
1815 ;;(emit-byte segment opcode)
1816 (emit-ea segment src (reg-tn-encoding dst)))))))))
1818 (define-instruction movsx (segment dst src)
1819 (:printer ext-reg-reg/mem-no-width
1820 ((op #b10111110) (reg/mem nil :type 'sized-byte-reg/mem)))
1821 (:printer rex-ext-reg-reg/mem-no-width
1822 ((op #b10111110) (reg/mem nil :type 'sized-byte-reg/mem)))
1823 (:printer ext-reg-reg/mem-no-width
1824 ((op #b10111111) (reg/mem nil :type 'sized-word-reg/mem)))
1825 (:printer rex-ext-reg-reg/mem-no-width
1826 ((op #b10111111) (reg/mem nil :type 'sized-word-reg/mem)))
1827 (:emitter (emit-move-with-extension segment dst src :signed)))
1829 (define-instruction movzx (segment dst src)
1830 (:printer ext-reg-reg/mem-no-width
1831 ((op #b10110110) (reg/mem nil :type 'sized-byte-reg/mem)))
1832 (:printer rex-ext-reg-reg/mem-no-width
1833 ((op #b10110110) (reg/mem nil :type 'sized-byte-reg/mem)))
1834 (:printer ext-reg-reg/mem-no-width
1835 ((op #b10110111) (reg/mem nil :type 'sized-word-reg/mem)))
1836 (:printer rex-ext-reg-reg/mem-no-width
1837 ((op #b10110111) (reg/mem nil :type 'sized-word-reg/mem)))
1838 (:emitter (emit-move-with-extension segment dst src nil)))
1840 ;;; The regular use of MOVSXD is with an operand size of :qword. This
1841 ;;; sign-extends the dword source into the qword destination register.
1842 ;;; If the operand size is :dword the instruction zero-extends the dword
1843 ;;; source into the qword destination register, i.e. it does the same as
1844 ;;; a dword MOV into a register.
1845 (define-instruction movsxd (segment dst src)
1846 (:printer reg-reg/mem ((op #b0110001) (width 1)
1847 (reg/mem nil :type 'sized-dword-reg/mem)))
1848 (:printer rex-reg-reg/mem ((op #b0110001) (width 1)
1849 (reg/mem nil :type 'sized-dword-reg/mem)))
1850 (:emitter (emit-move-with-extension segment dst src :signed)))
1852 ;;; this is not a real amd64 instruction, of course
1853 (define-instruction movzxd (segment dst src)
1854 ; (:printer reg-reg/mem ((op #x63) (reg nil :type 'reg)))
1855 (:emitter (emit-move-with-extension segment dst src nil)))
1857 (define-instruction push (segment src)
1859 (:printer reg-no-width-default-qword ((op #b01010)))
1860 (:printer rex-reg-no-width-default-qword ((op #b01010)))
1862 (:printer reg/mem-default-qword ((op '(#b11111111 #b110))))
1863 (:printer rex-reg/mem-default-qword ((op '(#b11111111 #b110))))
1865 (:printer byte ((op #b01101010) (imm nil :type 'signed-imm-byte))
1867 (:printer byte ((op #b01101000)
1868 (imm nil :type 'signed-imm-data-default-qword))
1870 ;; ### segment registers?
1873 (cond ((integerp src)
1874 (cond ((<= -128 src 127)
1875 (emit-byte segment #b01101010)
1876 (emit-byte segment src))
1878 ;; A REX-prefix is not needed because the operand size
1879 ;; defaults to 64 bits. The size of the immediate is 32
1880 ;; bits and it is sign-extended.
1881 (emit-byte segment #b01101000)
1882 (emit-signed-dword segment src))))
1884 (let ((size (operand-size src)))
1885 (aver (or (eq size :qword) (eq size :word)))
1886 (maybe-emit-operand-size-prefix segment size)
1887 (maybe-emit-rex-for-ea segment src nil :operand-size :do-not-set)
1888 (cond ((register-p src)
1889 (emit-byte-with-reg segment #b01010 (reg-tn-encoding src)))
1891 (emit-byte segment #b11111111)
1892 (emit-ea segment src #b110 :allow-constants t))))))))
1894 (define-instruction pop (segment dst)
1895 (:printer reg-no-width-default-qword ((op #b01011)))
1896 (:printer rex-reg-no-width-default-qword ((op #b01011)))
1897 (:printer reg/mem-default-qword ((op '(#b10001111 #b000))))
1898 (:printer rex-reg/mem-default-qword ((op '(#b10001111 #b000))))
1900 (let ((size (operand-size dst)))
1901 (aver (or (eq size :qword) (eq size :word)))
1902 (maybe-emit-operand-size-prefix segment size)
1903 (maybe-emit-rex-for-ea segment dst nil :operand-size :do-not-set)
1904 (cond ((register-p dst)
1905 (emit-byte-with-reg segment #b01011 (reg-tn-encoding dst)))
1907 (emit-byte segment #b10001111)
1908 (emit-ea segment dst #b000))))))
1910 (define-instruction xchg (segment operand1 operand2)
1911 ;; Register with accumulator.
1912 (:printer reg-no-width ((op #b10010)) '(:name :tab accum ", " reg))
1913 ;; Register/Memory with Register.
1914 (:printer reg-reg/mem ((op #b1000011)))
1915 (:printer rex-reg-reg/mem ((op #b1000011)))
1917 (let ((size (matching-operand-size operand1 operand2)))
1918 (maybe-emit-operand-size-prefix segment size)
1919 (labels ((xchg-acc-with-something (acc something)
1920 (if (and (not (eq size :byte)) (register-p something))
1922 (maybe-emit-rex-for-ea segment acc something)
1923 (emit-byte-with-reg segment
1925 (reg-tn-encoding something)))
1926 (xchg-reg-with-something acc something)))
1927 (xchg-reg-with-something (reg something)
1928 (maybe-emit-rex-for-ea segment something reg)
1929 (emit-byte segment (if (eq size :byte) #b10000110 #b10000111))
1930 (emit-ea segment something (reg-tn-encoding reg))))
1931 (cond ((accumulator-p operand1)
1932 (xchg-acc-with-something operand1 operand2))
1933 ((accumulator-p operand2)
1934 (xchg-acc-with-something operand2 operand1))
1935 ((register-p operand1)
1936 (xchg-reg-with-something operand1 operand2))
1937 ((register-p operand2)
1938 (xchg-reg-with-something operand2 operand1))
1940 (error "bogus args to XCHG: ~S ~S" operand1 operand2)))))))
1942 (define-instruction lea (segment dst src)
1943 (:printer rex-reg-reg/mem ((op #b1000110)))
1944 (:printer reg-reg/mem ((op #b1000110) (width 1)))
1946 (aver (or (dword-reg-p dst) (qword-reg-p dst)))
1947 (maybe-emit-rex-for-ea segment src dst
1948 :operand-size :qword)
1949 (emit-byte segment #b10001101)
1950 (emit-ea segment src (reg-tn-encoding dst))))
1952 (define-instruction cmpxchg (segment dst src &optional prefix)
1953 ;; Register/Memory with Register.
1954 (:printer ext-reg-reg/mem ((op #b1011000)) '(:name :tab reg/mem ", " reg))
1956 (aver (register-p src))
1957 (emit-prefix segment prefix)
1958 (let ((size (matching-operand-size src dst)))
1959 (maybe-emit-operand-size-prefix segment size)
1960 (maybe-emit-rex-for-ea segment dst src)
1961 (emit-byte segment #b00001111)
1962 (emit-byte segment (if (eq size :byte) #b10110000 #b10110001))
1963 (emit-ea segment dst (reg-tn-encoding src)))))
1966 ;;;; flag control instructions
1968 ;;; CLC -- Clear Carry Flag.
1969 (define-instruction clc (segment)
1970 (:printer byte ((op #b11111000)))
1972 (emit-byte segment #b11111000)))
1974 ;;; CLD -- Clear Direction Flag.
1975 (define-instruction cld (segment)
1976 (:printer byte ((op #b11111100)))
1978 (emit-byte segment #b11111100)))
1980 ;;; CLI -- Clear Iterrupt Enable Flag.
1981 (define-instruction cli (segment)
1982 (:printer byte ((op #b11111010)))
1984 (emit-byte segment #b11111010)))
1986 ;;; CMC -- Complement Carry Flag.
1987 (define-instruction cmc (segment)
1988 (:printer byte ((op #b11110101)))
1990 (emit-byte segment #b11110101)))
1992 ;;; LAHF -- Load AH into flags.
1993 (define-instruction lahf (segment)
1994 (:printer byte ((op #b10011111)))
1996 (emit-byte segment #b10011111)))
1998 ;;; POPF -- Pop flags.
1999 (define-instruction popf (segment)
2000 (:printer byte ((op #b10011101)))
2002 (emit-byte segment #b10011101)))
2004 ;;; PUSHF -- push flags.
2005 (define-instruction pushf (segment)
2006 (:printer byte ((op #b10011100)))
2008 (emit-byte segment #b10011100)))
2010 ;;; SAHF -- Store AH into flags.
2011 (define-instruction sahf (segment)
2012 (:printer byte ((op #b10011110)))
2014 (emit-byte segment #b10011110)))
2016 ;;; STC -- Set Carry Flag.
2017 (define-instruction stc (segment)
2018 (:printer byte ((op #b11111001)))
2020 (emit-byte segment #b11111001)))
2022 ;;; STD -- Set Direction Flag.
2023 (define-instruction std (segment)
2024 (:printer byte ((op #b11111101)))
2026 (emit-byte segment #b11111101)))
2028 ;;; STI -- Set Interrupt Enable Flag.
2029 (define-instruction sti (segment)
2030 (:printer byte ((op #b11111011)))
2032 (emit-byte segment #b11111011)))
2036 (defun emit-random-arith-inst (name segment dst src opcode
2037 &optional allow-constants)
2038 (let ((size (matching-operand-size dst src)))
2039 (maybe-emit-operand-size-prefix segment size)
2042 (cond ((and (not (eq size :byte)) (<= -128 src 127))
2043 (maybe-emit-rex-for-ea segment dst nil)
2044 (emit-byte segment #b10000011)
2045 (emit-ea segment dst opcode :allow-constants allow-constants)
2046 (emit-byte segment src))
2047 ((accumulator-p dst)
2048 (maybe-emit-rex-for-ea segment dst nil)
2055 (emit-sized-immediate segment size src))
2057 (maybe-emit-rex-for-ea segment dst nil)
2058 (emit-byte segment (if (eq size :byte) #b10000000 #b10000001))
2059 (emit-ea segment dst opcode :allow-constants allow-constants)
2060 (emit-sized-immediate segment size src))))
2062 (maybe-emit-rex-for-ea segment dst src)
2066 (if (eq size :byte) #b00000000 #b00000001)))
2067 (emit-ea segment dst (reg-tn-encoding src) :allow-constants allow-constants))
2069 (maybe-emit-rex-for-ea segment src dst)
2073 (if (eq size :byte) #b00000010 #b00000011)))
2074 (emit-ea segment src (reg-tn-encoding dst) :allow-constants allow-constants))
2076 (error "bogus operands to ~A" name)))))
2078 (eval-when (:compile-toplevel :execute)
2079 (defun arith-inst-printer-list (subop)
2080 `((accum-imm ((op ,(dpb subop (byte 3 2) #b0000010))))
2081 (rex-accum-imm ((op ,(dpb subop (byte 3 2) #b0000010))))
2082 (reg/mem-imm ((op (#b1000000 ,subop))))
2083 (rex-reg/mem-imm ((op (#b1000000 ,subop))))
2084 ;; The redundant encoding #x82 is invalid in 64-bit mode,
2085 ;; therefore we force WIDTH to 1.
2086 (reg/mem-imm ((op (#b1000001 ,subop)) (width 1)
2087 (imm nil :type signed-imm-byte)))
2088 (rex-reg/mem-imm ((op (#b1000001 ,subop)) (width 1)
2089 (imm nil :type signed-imm-byte)))
2090 (reg-reg/mem-dir ((op ,(dpb subop (byte 3 1) #b000000))))
2091 (rex-reg-reg/mem-dir ((op ,(dpb subop (byte 3 1) #b000000))))))
2094 (define-instruction add (segment dst src &optional prefix)
2095 (:printer-list (arith-inst-printer-list #b000))
2097 (emit-prefix segment prefix)
2098 (emit-random-arith-inst "ADD" segment dst src #b000)))
2100 (define-instruction adc (segment dst src)
2101 (:printer-list (arith-inst-printer-list #b010))
2102 (:emitter (emit-random-arith-inst "ADC" segment dst src #b010)))
2104 (define-instruction sub (segment dst src)
2105 (:printer-list (arith-inst-printer-list #b101))
2106 (:emitter (emit-random-arith-inst "SUB" segment dst src #b101)))
2108 (define-instruction sbb (segment dst src)
2109 (:printer-list (arith-inst-printer-list #b011))
2110 (:emitter (emit-random-arith-inst "SBB" segment dst src #b011)))
2112 (define-instruction cmp (segment dst src)
2113 (:printer-list (arith-inst-printer-list #b111))
2114 (:emitter (emit-random-arith-inst "CMP" segment dst src #b111 t)))
2116 ;;; The one-byte encodings for INC and DEC are used as REX prefixes
2117 ;;; in 64-bit mode so we always use the two-byte form.
2118 (define-instruction inc (segment dst)
2119 (:printer reg/mem ((op '(#b1111111 #b000))))
2120 (:printer rex-reg/mem ((op '(#b1111111 #b000))))
2122 (let ((size (operand-size dst)))
2123 (maybe-emit-operand-size-prefix segment size)
2124 (maybe-emit-rex-for-ea segment dst nil)
2125 (emit-byte segment (if (eq size :byte) #b11111110 #b11111111))
2126 (emit-ea segment dst #b000))))
2128 (define-instruction dec (segment dst)
2129 (:printer reg/mem ((op '(#b1111111 #b001))))
2130 (:printer rex-reg/mem ((op '(#b1111111 #b001))))
2132 (let ((size (operand-size dst)))
2133 (maybe-emit-operand-size-prefix segment size)
2134 (maybe-emit-rex-for-ea segment dst nil)
2135 (emit-byte segment (if (eq size :byte) #b11111110 #b11111111))
2136 (emit-ea segment dst #b001))))
2138 (define-instruction neg (segment dst)
2139 (:printer reg/mem ((op '(#b1111011 #b011))))
2140 (:printer rex-reg/mem ((op '(#b1111011 #b011))))
2142 (let ((size (operand-size dst)))
2143 (maybe-emit-operand-size-prefix segment size)
2144 (maybe-emit-rex-for-ea segment dst nil)
2145 (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
2146 (emit-ea segment dst #b011))))
2148 (define-instruction mul (segment dst src)
2149 (:printer accum-reg/mem ((op '(#b1111011 #b100))))
2150 (:printer rex-accum-reg/mem ((op '(#b1111011 #b100))))
2152 (let ((size (matching-operand-size dst src)))
2153 (aver (accumulator-p dst))
2154 (maybe-emit-operand-size-prefix segment size)
2155 (maybe-emit-rex-for-ea segment src nil)
2156 (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
2157 (emit-ea segment src #b100))))
2159 (define-instruction imul (segment dst &optional src1 src2)
2160 (:printer accum-reg/mem ((op '(#b1111011 #b101))))
2161 (:printer rex-accum-reg/mem ((op '(#b1111011 #b101))))
2162 (:printer ext-reg-reg/mem-no-width ((op #b10101111)))
2163 (:printer rex-ext-reg-reg/mem-no-width ((op #b10101111)))
2164 (:printer reg-reg/mem ((op #b0110100) (width 1)
2165 (imm nil :type 'signed-imm-data))
2166 '(:name :tab reg ", " reg/mem ", " imm))
2167 (:printer rex-reg-reg/mem ((op #b0110100) (width 1)
2168 (imm nil :type 'signed-imm-data))
2169 '(:name :tab reg ", " reg/mem ", " imm))
2170 (:printer reg-reg/mem ((op #b0110101) (width 1)
2171 (imm nil :type 'signed-imm-byte))
2172 '(:name :tab reg ", " reg/mem ", " imm))
2173 (:printer rex-reg-reg/mem ((op #b0110101) (width 1)
2174 (imm nil :type 'signed-imm-byte))
2175 '(:name :tab reg ", " reg/mem ", " imm))
2177 (flet ((r/m-with-immed-to-reg (reg r/m immed)
2178 (let* ((size (matching-operand-size reg r/m))
2179 (sx (and (not (eq size :byte)) (<= -128 immed 127))))
2180 (maybe-emit-operand-size-prefix segment size)
2181 (maybe-emit-rex-for-ea segment r/m reg)
2182 (emit-byte segment (if sx #b01101011 #b01101001))
2183 (emit-ea segment r/m (reg-tn-encoding reg))
2185 (emit-byte segment immed)
2186 (emit-sized-immediate segment size immed)))))
2188 (r/m-with-immed-to-reg dst src1 src2))
2191 (r/m-with-immed-to-reg dst dst src1)
2192 (let ((size (matching-operand-size dst src1)))
2193 (maybe-emit-operand-size-prefix segment size)
2194 (maybe-emit-rex-for-ea segment src1 dst)
2195 (emit-byte segment #b00001111)
2196 (emit-byte segment #b10101111)
2197 (emit-ea segment src1 (reg-tn-encoding dst)))))
2199 (let ((size (operand-size dst)))
2200 (maybe-emit-operand-size-prefix segment size)
2201 (maybe-emit-rex-for-ea segment dst nil)
2202 (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
2203 (emit-ea segment dst #b101)))))))
2205 (define-instruction div (segment dst src)
2206 (:printer accum-reg/mem ((op '(#b1111011 #b110))))
2207 (:printer rex-accum-reg/mem ((op '(#b1111011 #b110))))
2209 (let ((size (matching-operand-size dst src)))
2210 (aver (accumulator-p dst))
2211 (maybe-emit-operand-size-prefix segment size)
2212 (maybe-emit-rex-for-ea segment src nil)
2213 (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
2214 (emit-ea segment src #b110))))
2216 (define-instruction idiv (segment dst src)
2217 (:printer accum-reg/mem ((op '(#b1111011 #b111))))
2218 (:printer rex-accum-reg/mem ((op '(#b1111011 #b111))))
2220 (let ((size (matching-operand-size dst src)))
2221 (aver (accumulator-p dst))
2222 (maybe-emit-operand-size-prefix segment size)
2223 (maybe-emit-rex-for-ea segment src nil)
2224 (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
2225 (emit-ea segment src #b111))))
2227 (define-instruction bswap (segment dst)
2228 (:printer ext-reg-no-width ((op #b11001)))
2230 (let ((size (operand-size dst)))
2231 (maybe-emit-rex-prefix segment size nil nil dst)
2232 (emit-byte segment #x0f)
2233 (emit-byte-with-reg segment #b11001 (reg-tn-encoding dst)))))
2235 ;;; CBW -- Convert Byte to Word. AX <- sign_xtnd(AL)
2236 (define-instruction cbw (segment)
2237 (:printer x66-byte ((op #b10011000)))
2239 (maybe-emit-operand-size-prefix segment :word)
2240 (emit-byte segment #b10011000)))
2242 ;;; CWDE -- Convert Word To Double Word Extended. EAX <- sign_xtnd(AX)
2243 (define-instruction cwde (segment)
2244 (:printer byte ((op #b10011000)))
2246 (maybe-emit-operand-size-prefix segment :dword)
2247 (emit-byte segment #b10011000)))
2249 ;;; CDQE -- Convert Double Word To Quad Word Extended. RAX <- sign_xtnd(EAX)
2250 (define-instruction cdqe (segment)
2251 (:printer rex-byte ((op #b10011000)))
2253 (maybe-emit-rex-prefix segment :qword nil nil nil)
2254 (emit-byte segment #b10011000)))
2256 ;;; CWD -- Convert Word to Double Word. DX:AX <- sign_xtnd(AX)
2257 (define-instruction cwd (segment)
2258 (:printer x66-byte ((op #b10011001)))
2260 (maybe-emit-operand-size-prefix segment :word)
2261 (emit-byte segment #b10011001)))
2263 ;;; CDQ -- Convert Double Word to Quad Word. EDX:EAX <- sign_xtnd(EAX)
2264 (define-instruction cdq (segment)
2265 (:printer byte ((op #b10011001)))
2267 (maybe-emit-operand-size-prefix segment :dword)
2268 (emit-byte segment #b10011001)))
2270 ;;; CQO -- Convert Quad Word to Octaword. RDX:RAX <- sign_xtnd(RAX)
2271 (define-instruction cqo (segment)
2272 (:printer rex-byte ((op #b10011001)))
2274 (maybe-emit-rex-prefix segment :qword nil nil nil)
2275 (emit-byte segment #b10011001)))
2277 (define-instruction xadd (segment dst src &optional prefix)
2278 ;; Register/Memory with Register.
2279 (:printer ext-reg-reg/mem ((op #b1100000)) '(:name :tab reg/mem ", " reg))
2281 (aver (register-p src))
2282 (emit-prefix segment prefix)
2283 (let ((size (matching-operand-size src dst)))
2284 (maybe-emit-operand-size-prefix segment size)
2285 (maybe-emit-rex-for-ea segment dst src)
2286 (emit-byte segment #b00001111)
2287 (emit-byte segment (if (eq size :byte) #b11000000 #b11000001))
2288 (emit-ea segment dst (reg-tn-encoding src)))))
2293 (defun emit-shift-inst (segment dst amount opcode)
2294 (let ((size (operand-size dst)))
2295 (maybe-emit-operand-size-prefix segment size)
2296 (multiple-value-bind (major-opcode immed)
2298 (:cl (values #b11010010 nil))
2299 (1 (values #b11010000 nil))
2300 (t (values #b11000000 t)))
2301 (maybe-emit-rex-for-ea segment dst nil)
2303 (if (eq size :byte) major-opcode (logior major-opcode 1)))
2304 (emit-ea segment dst opcode)
2306 (emit-byte segment amount)))))
2308 (eval-when (:compile-toplevel :execute)
2309 (defun shift-inst-printer-list (subop)
2310 `((reg/mem ((op (#b1101000 ,subop)))
2311 (:name :tab reg/mem ", 1"))
2312 (rex-reg/mem ((op (#b1101000 ,subop)))
2313 (:name :tab reg/mem ", 1"))
2314 (reg/mem ((op (#b1101001 ,subop)))
2315 (:name :tab reg/mem ", " 'cl))
2316 (rex-reg/mem ((op (#b1101001 ,subop)))
2317 (:name :tab reg/mem ", " 'cl))
2318 (reg/mem-imm ((op (#b1100000 ,subop))
2319 (imm nil :type imm-byte)))
2320 (rex-reg/mem-imm ((op (#b1100000 ,subop))
2321 (imm nil :type imm-byte))))))
2323 (define-instruction rol (segment dst amount)
2325 (shift-inst-printer-list #b000))
2327 (emit-shift-inst segment dst amount #b000)))
2329 (define-instruction ror (segment dst amount)
2331 (shift-inst-printer-list #b001))
2333 (emit-shift-inst segment dst amount #b001)))
2335 (define-instruction rcl (segment dst amount)
2337 (shift-inst-printer-list #b010))
2339 (emit-shift-inst segment dst amount #b010)))
2341 (define-instruction rcr (segment dst amount)
2343 (shift-inst-printer-list #b011))
2345 (emit-shift-inst segment dst amount #b011)))
2347 (define-instruction shl (segment dst amount)
2349 (shift-inst-printer-list #b100))
2351 (emit-shift-inst segment dst amount #b100)))
2353 (define-instruction shr (segment dst amount)
2355 (shift-inst-printer-list #b101))
2357 (emit-shift-inst segment dst amount #b101)))
2359 (define-instruction sar (segment dst amount)
2361 (shift-inst-printer-list #b111))
2363 (emit-shift-inst segment dst amount #b111)))
2365 (defun emit-double-shift (segment opcode dst src amt)
2366 (let ((size (matching-operand-size dst src)))
2367 (when (eq size :byte)
2368 (error "Double shifts can only be used with words."))
2369 (maybe-emit-operand-size-prefix segment size)
2370 (maybe-emit-rex-for-ea segment dst src)
2371 (emit-byte segment #b00001111)
2372 (emit-byte segment (dpb opcode (byte 1 3)
2373 (if (eq amt :cl) #b10100101 #b10100100)))
2374 (emit-ea segment dst (reg-tn-encoding src))
2375 (unless (eq amt :cl)
2376 (emit-byte segment amt))))
2378 (eval-when (:compile-toplevel :execute)
2379 (defun double-shift-inst-printer-list (op)
2381 (ext-reg-reg/mem-imm ((op ,(logior op #b100))
2382 (imm nil :type signed-imm-byte)))
2383 (ext-reg-reg/mem ((op ,(logior op #b101)))
2384 (:name :tab reg/mem ", " 'cl)))))
2386 (define-instruction shld (segment dst src amt)
2387 (:declare (type (or (member :cl) (mod 32)) amt))
2388 (:printer-list (double-shift-inst-printer-list #b10100000))
2390 (emit-double-shift segment #b0 dst src amt)))
2392 (define-instruction shrd (segment dst src amt)
2393 (:declare (type (or (member :cl) (mod 32)) amt))
2394 (:printer-list (double-shift-inst-printer-list #b10101000))
2396 (emit-double-shift segment #b1 dst src amt)))
2398 (define-instruction and (segment dst src)
2400 (arith-inst-printer-list #b100))
2402 (emit-random-arith-inst "AND" segment dst src #b100)))
2404 (define-instruction test (segment this that)
2405 (:printer accum-imm ((op #b1010100)))
2406 (:printer rex-accum-imm ((op #b1010100)))
2407 (:printer reg/mem-imm ((op '(#b1111011 #b000))))
2408 (:printer rex-reg/mem-imm ((op '(#b1111011 #b000))))
2409 (:printer reg-reg/mem ((op #b1000010)))
2410 (:printer rex-reg-reg/mem ((op #b1000010)))
2412 (let ((size (matching-operand-size this that)))
2413 (maybe-emit-operand-size-prefix segment size)
2414 (flet ((test-immed-and-something (immed something)
2415 (cond ((accumulator-p something)
2416 (maybe-emit-rex-for-ea segment something nil)
2418 (if (eq size :byte) #b10101000 #b10101001))
2419 (emit-sized-immediate segment size immed))
2421 (maybe-emit-rex-for-ea segment something nil)
2423 (if (eq size :byte) #b11110110 #b11110111))
2424 (emit-ea segment something #b000)
2425 (emit-sized-immediate segment size immed))))
2426 (test-reg-and-something (reg something)
2427 (maybe-emit-rex-for-ea segment something reg)
2428 (emit-byte segment (if (eq size :byte) #b10000100 #b10000101))
2429 (emit-ea segment something (reg-tn-encoding reg))))
2430 (cond ((integerp that)
2431 (test-immed-and-something that this))
2433 (test-immed-and-something this that))
2435 (test-reg-and-something this that))
2437 (test-reg-and-something that this))
2439 (error "bogus operands for TEST: ~S and ~S" this that)))))))
2441 (define-instruction or (segment dst src)
2443 (arith-inst-printer-list #b001))
2445 (emit-random-arith-inst "OR" segment dst src #b001)))
2447 (define-instruction xor (segment dst src)
2449 (arith-inst-printer-list #b110))
2451 (emit-random-arith-inst "XOR" segment dst src #b110)))
2453 (define-instruction not (segment dst)
2454 (:printer reg/mem ((op '(#b1111011 #b010))))
2455 (:printer rex-reg/mem ((op '(#b1111011 #b010))))
2457 (let ((size (operand-size dst)))
2458 (maybe-emit-operand-size-prefix segment size)
2459 (maybe-emit-rex-for-ea segment dst nil)
2460 (emit-byte segment (if (eq size :byte) #b11110110 #b11110111))
2461 (emit-ea segment dst #b010))))
2463 ;;;; string manipulation
2465 (define-instruction cmps (segment size)
2466 (:printer string-op ((op #b1010011)))
2467 (:printer rex-string-op ((op #b1010011)))
2469 (maybe-emit-operand-size-prefix segment size)
2470 (maybe-emit-rex-prefix segment size nil nil nil)
2471 (emit-byte segment (if (eq size :byte) #b10100110 #b10100111))))
2473 (define-instruction ins (segment acc)
2474 (:printer string-op ((op #b0110110)))
2475 (:printer rex-string-op ((op #b0110110)))
2477 (let ((size (operand-size acc)))
2478 (aver (accumulator-p acc))
2479 (maybe-emit-operand-size-prefix segment size)
2480 (maybe-emit-rex-prefix segment size nil nil nil)
2481 (emit-byte segment (if (eq size :byte) #b01101100 #b01101101)))))
2483 (define-instruction lods (segment acc)
2484 (:printer string-op ((op #b1010110)))
2485 (:printer rex-string-op ((op #b1010110)))
2487 (let ((size (operand-size acc)))
2488 (aver (accumulator-p acc))
2489 (maybe-emit-operand-size-prefix segment size)
2490 (maybe-emit-rex-prefix segment size nil nil nil)
2491 (emit-byte segment (if (eq size :byte) #b10101100 #b10101101)))))
2493 (define-instruction movs (segment size)
2494 (:printer string-op ((op #b1010010)))
2495 (:printer rex-string-op ((op #b1010010)))
2497 (maybe-emit-operand-size-prefix segment size)
2498 (maybe-emit-rex-prefix segment size nil nil nil)
2499 (emit-byte segment (if (eq size :byte) #b10100100 #b10100101))))
2501 (define-instruction outs (segment acc)
2502 (:printer string-op ((op #b0110111)))
2503 (:printer rex-string-op ((op #b0110111)))
2505 (let ((size (operand-size acc)))
2506 (aver (accumulator-p acc))
2507 (maybe-emit-operand-size-prefix segment size)
2508 (maybe-emit-rex-prefix segment size nil nil nil)
2509 (emit-byte segment (if (eq size :byte) #b01101110 #b01101111)))))
2511 (define-instruction scas (segment acc)
2512 (:printer string-op ((op #b1010111)))
2513 (:printer rex-string-op ((op #b1010111)))
2515 (let ((size (operand-size acc)))
2516 (aver (accumulator-p acc))
2517 (maybe-emit-operand-size-prefix segment size)
2518 (maybe-emit-rex-prefix segment size nil nil nil)
2519 (emit-byte segment (if (eq size :byte) #b10101110 #b10101111)))))
2521 (define-instruction stos (segment acc)
2522 (:printer string-op ((op #b1010101)))
2523 (:printer rex-string-op ((op #b1010101)))
2525 (let ((size (operand-size acc)))
2526 (aver (accumulator-p acc))
2527 (maybe-emit-operand-size-prefix segment size)
2528 (maybe-emit-rex-prefix segment size nil nil nil)
2529 (emit-byte segment (if (eq size :byte) #b10101010 #b10101011)))))
2531 (define-instruction xlat (segment)
2532 (:printer byte ((op #b11010111)))
2534 (emit-byte segment #b11010111)))
2536 (define-instruction rep (segment)
2538 (emit-byte segment #b11110011)))
2540 (define-instruction repe (segment)
2541 (:printer byte ((op #b11110011)))
2543 (emit-byte segment #b11110011)))
2545 (define-instruction repne (segment)
2546 (:printer byte ((op #b11110010)))
2548 (emit-byte segment #b11110010)))
2551 ;;;; bit manipulation
2553 (define-instruction bsf (segment dst src)
2554 (:printer ext-reg-reg/mem-no-width ((op #b10111100)))
2555 (:printer rex-ext-reg-reg/mem-no-width ((op #b10111100)))
2557 (let ((size (matching-operand-size dst src)))
2558 (when (eq size :byte)
2559 (error "can't scan bytes: ~S" src))
2560 (maybe-emit-operand-size-prefix segment size)
2561 (maybe-emit-rex-for-ea segment src dst)
2562 (emit-byte segment #b00001111)
2563 (emit-byte segment #b10111100)
2564 (emit-ea segment src (reg-tn-encoding dst)))))
2566 (define-instruction bsr (segment dst src)
2567 (:printer ext-reg-reg/mem-no-width ((op #b10111101)))
2568 (:printer rex-ext-reg-reg/mem-no-width ((op #b10111101)))
2570 (let ((size (matching-operand-size dst src)))
2571 (when (eq size :byte)
2572 (error "can't scan bytes: ~S" src))
2573 (maybe-emit-operand-size-prefix segment size)
2574 (maybe-emit-rex-for-ea segment src dst)
2575 (emit-byte segment #b00001111)
2576 (emit-byte segment #b10111101)
2577 (emit-ea segment src (reg-tn-encoding dst)))))
2579 (defun emit-bit-test-and-mumble (segment src index opcode)
2580 (let ((size (operand-size src)))
2581 (when (eq size :byte)
2582 (error "can't scan bytes: ~S" src))
2583 (maybe-emit-operand-size-prefix segment size)
2584 (cond ((integerp index)
2585 (maybe-emit-rex-for-ea segment src nil)
2586 (emit-byte segment #b00001111)
2587 (emit-byte segment #b10111010)
2588 (emit-ea segment src opcode)
2589 (emit-byte segment index))
2591 (maybe-emit-rex-for-ea segment src index)
2592 (emit-byte segment #b00001111)
2593 (emit-byte segment (dpb opcode (byte 3 3) #b10000011))
2594 (emit-ea segment src (reg-tn-encoding index))))))
2596 (eval-when (:compile-toplevel :execute)
2597 (defun bit-test-inst-printer-list (subop)
2598 `((ext-reg/mem-imm ((op (#b1011101 ,subop))
2599 (reg/mem nil :type reg/mem)
2600 (imm nil :type imm-byte)
2602 (ext-reg-reg/mem ((op ,(dpb subop (byte 3 2) #b1000001))
2604 (:name :tab reg/mem ", " reg)))))
2606 (define-instruction bt (segment src index)
2607 (:printer-list (bit-test-inst-printer-list #b100))
2609 (emit-bit-test-and-mumble segment src index #b100)))
2611 (define-instruction btc (segment src index)
2612 (:printer-list (bit-test-inst-printer-list #b111))
2614 (emit-bit-test-and-mumble segment src index #b111)))
2616 (define-instruction btr (segment src index)
2617 (:printer-list (bit-test-inst-printer-list #b110))
2619 (emit-bit-test-and-mumble segment src index #b110)))
2621 (define-instruction bts (segment src index)
2622 (:printer-list (bit-test-inst-printer-list #b101))
2624 (emit-bit-test-and-mumble segment src index #b101)))
2627 ;;;; control transfer
2629 (define-instruction call (segment where)
2630 (:printer near-jump ((op #b11101000)))
2631 (:printer reg/mem-default-qword ((op '(#b11111111 #b010))))
2632 (:printer rex-reg/mem-default-qword ((op '(#b11111111 #b010))))
2636 (emit-byte segment #b11101000) ; 32 bit relative
2637 (emit-back-patch segment
2639 (lambda (segment posn)
2640 (emit-signed-dword segment
2641 (- (label-position where)
2644 ;; There is no CALL rel64...
2645 (error "Cannot CALL a fixup: ~S" where))
2647 (maybe-emit-rex-for-ea segment where nil :operand-size :do-not-set)
2648 (emit-byte segment #b11111111)
2649 (emit-ea segment where #b010)))))
2651 (defun emit-byte-displacement-backpatch (segment target)
2652 (emit-back-patch segment
2654 (lambda (segment posn)
2655 (let ((disp (- (label-position target) (1+ posn))))
2656 (aver (<= -128 disp 127))
2657 (emit-byte segment disp)))))
2659 (define-instruction jmp (segment cond &optional where)
2660 ;; conditional jumps
2661 (:printer short-cond-jump ((op #b0111)) '('j cc :tab label))
2662 (:printer near-cond-jump () '('j cc :tab label))
2663 ;; unconditional jumps
2664 (:printer short-jump ((op #b1011)))
2665 (:printer near-jump ((op #b11101001)))
2666 (:printer reg/mem-default-qword ((op '(#b11111111 #b100))))
2667 (:printer rex-reg/mem-default-qword ((op '(#b11111111 #b100))))
2672 (lambda (segment posn delta-if-after)
2673 (let ((disp (- (label-position where posn delta-if-after)
2675 (when (<= -128 disp 127)
2677 (dpb (conditional-opcode cond)
2680 (emit-byte-displacement-backpatch segment where)
2682 (lambda (segment posn)
2683 (let ((disp (- (label-position where) (+ posn 6))))
2684 (emit-byte segment #b00001111)
2686 (dpb (conditional-opcode cond)
2689 (emit-signed-dword segment disp)))))
2690 ((label-p (setq where cond))
2693 (lambda (segment posn delta-if-after)
2694 (let ((disp (- (label-position where posn delta-if-after)
2696 (when (<= -128 disp 127)
2697 (emit-byte segment #b11101011)
2698 (emit-byte-displacement-backpatch segment where)
2700 (lambda (segment posn)
2701 (let ((disp (- (label-position where) (+ posn 5))))
2702 (emit-byte segment #b11101001)
2703 (emit-signed-dword segment disp)))))
2705 (emit-byte segment #b11101001)
2706 (emit-relative-fixup segment where))
2708 (unless (or (ea-p where) (tn-p where))
2709 (error "don't know what to do with ~A" where))
2710 ;; near jump defaults to 64 bit
2711 ;; w-bit in rex prefix is unnecessary
2712 (maybe-emit-rex-for-ea segment where nil :operand-size :do-not-set)
2713 (emit-byte segment #b11111111)
2714 (emit-ea segment where #b100)))))
2716 (define-instruction ret (segment &optional stack-delta)
2717 (:printer byte ((op #b11000011)))
2718 (:printer byte ((op #b11000010) (imm nil :type 'imm-word-16))
2721 (cond ((and stack-delta (not (zerop stack-delta)))
2722 (emit-byte segment #b11000010)
2723 (emit-word segment stack-delta))
2725 (emit-byte segment #b11000011)))))
2727 (define-instruction jrcxz (segment target)
2728 (:printer short-jump ((op #b0011)))
2730 (emit-byte segment #b11100011)
2731 (emit-byte-displacement-backpatch segment target)))
2733 (define-instruction loop (segment target)
2734 (:printer short-jump ((op #b0010)))
2736 (emit-byte segment #b11100010) ; pfw this was 11100011, or jecxz!!!!
2737 (emit-byte-displacement-backpatch segment target)))
2739 (define-instruction loopz (segment target)
2740 (:printer short-jump ((op #b0001)))
2742 (emit-byte segment #b11100001)
2743 (emit-byte-displacement-backpatch segment target)))
2745 (define-instruction loopnz (segment target)
2746 (:printer short-jump ((op #b0000)))
2748 (emit-byte segment #b11100000)
2749 (emit-byte-displacement-backpatch segment target)))
2751 ;;;; conditional move
2752 (define-instruction cmov (segment cond dst src)
2753 (:printer cond-move ())
2754 (:printer rex-cond-move ())
2756 (aver (register-p dst))
2757 (let ((size (matching-operand-size dst src)))
2758 (aver (or (eq size :word) (eq size :dword) (eq size :qword)))
2759 (maybe-emit-operand-size-prefix segment size))
2760 (maybe-emit-rex-for-ea segment src dst)
2761 (emit-byte segment #b00001111)
2762 (emit-byte segment (dpb (conditional-opcode cond) (byte 4 0) #b01000000))
2763 (emit-ea segment src (reg-tn-encoding dst))))
2765 ;;;; conditional byte set
2767 (define-instruction set (segment dst cond)
2768 (:printer cond-set ())
2770 (maybe-emit-rex-for-ea segment dst nil)
2771 (emit-byte segment #b00001111)
2772 (emit-byte segment (dpb (conditional-opcode cond) (byte 4 0) #b10010000))
2773 (emit-ea segment dst #b000)))
2777 (define-instruction enter (segment disp &optional (level 0))
2778 (:declare (type (unsigned-byte 16) disp)
2779 (type (unsigned-byte 8) level))
2780 (:printer enter-format ((op #b11001000)))
2782 (emit-byte segment #b11001000)
2783 (emit-word segment disp)
2784 (emit-byte segment level)))
2786 (define-instruction leave (segment)
2787 (:printer byte ((op #b11001001)))
2789 (emit-byte segment #b11001001)))
2791 ;;;; interrupt instructions
2793 (defun snarf-error-junk (sap offset &optional length-only)
2794 (let* ((length (sb!sys:sap-ref-8 sap offset))
2795 (vector (make-array length :element-type '(unsigned-byte 8))))
2796 (declare (type sb!sys:system-area-pointer sap)
2797 (type (unsigned-byte 8) length)
2798 (type (simple-array (unsigned-byte 8) (*)) vector))
2800 (values 0 (1+ length) nil nil))
2802 (sb!kernel:copy-ub8-from-system-area sap (1+ offset)
2804 (collect ((sc-offsets)
2806 (lengths 1) ; the length byte
2808 (error-number (sb!c:read-var-integer vector index)))
2811 (when (>= index length)
2813 (let ((old-index index))
2814 (sc-offsets (sb!c:read-var-integer vector index))
2815 (lengths (- index old-index))))
2816 (values error-number
2822 (defmacro break-cases (breaknum &body cases)
2823 (let ((bn-temp (gensym)))
2824 (collect ((clauses))
2825 (dolist (case cases)
2826 (clauses `((= ,bn-temp ,(car case)) ,@(cdr case))))
2827 `(let ((,bn-temp ,breaknum))
2828 (cond ,@(clauses))))))
2831 (defun break-control (chunk inst stream dstate)
2832 (declare (ignore inst))
2833 (flet ((nt (x) (if stream (sb!disassem:note x dstate))))
2834 ;; XXX: {BYTE,WORD}-IMM-CODE below is a macro defined by the
2835 ;; DEFINE-INSTRUCTION-FORMAT for {BYTE,WORD}-IMM above. Due to
2836 ;; the spectacular design for DEFINE-INSTRUCTION-FORMAT (involving
2837 ;; a call to EVAL in order to define the macros at compile-time
2838 ;; only) they do not even show up as symbols in the target core.
2839 (case #!-ud2-breakpoints (byte-imm-code chunk dstate)
2840 #!+ud2-breakpoints (word-imm-code chunk dstate)
2843 (sb!disassem:handle-break-args #'snarf-error-junk stream dstate))
2846 (sb!disassem:handle-break-args #'snarf-error-junk stream dstate))
2848 (nt "breakpoint trap"))
2849 (#.pending-interrupt-trap
2850 (nt "pending interrupt trap"))
2853 (#.fun-end-breakpoint-trap
2854 (nt "function end breakpoint trap"))
2855 (#.single-step-around-trap
2856 (nt "single-step trap (around)"))
2857 (#.single-step-before-trap
2858 (nt "single-step trap (before)")))))
2860 (define-instruction break (segment code)
2861 (:declare (type (unsigned-byte 8) code))
2862 #!-ud2-breakpoints (:printer byte-imm ((op #b11001100)) '(:name :tab code)
2863 :control #'break-control)
2864 #!+ud2-breakpoints (:printer word-imm ((op #b0000101100001111)) '(:name :tab code)
2865 :control #'break-control)
2867 #!-ud2-breakpoints (emit-byte segment #b11001100)
2868 ;; On darwin, trap handling via SIGTRAP is unreliable, therefore we
2869 ;; throw a sigill with 0x0b0f instead and check for this in the
2870 ;; SIGILL handler and pass it on to the sigtrap handler if
2872 #!+ud2-breakpoints (emit-word segment #b0000101100001111)
2873 (emit-byte segment code)))
2875 (define-instruction int (segment number)
2876 (:declare (type (unsigned-byte 8) number))
2877 (:printer byte-imm ((op #b11001101)))
2881 (emit-byte segment #b11001100))
2883 (emit-byte segment #b11001101)
2884 (emit-byte segment number)))))
2886 (define-instruction iret (segment)
2887 (:printer byte ((op #b11001111)))
2889 (emit-byte segment #b11001111)))
2891 ;;;; processor control
2893 (define-instruction hlt (segment)
2894 (:printer byte ((op #b11110100)))
2896 (emit-byte segment #b11110100)))
2898 (define-instruction nop (segment)
2899 (:printer byte ((op #b10010000)))
2901 (emit-byte segment #b10010000)))
2903 (define-instruction wait (segment)
2904 (:printer byte ((op #b10011011)))
2906 (emit-byte segment #b10011011)))
2908 (defun emit-prefix (segment name)
2909 (declare (ignorable segment))
2914 (emit-byte segment #xf0))))
2916 ;;; FIXME: It would be better to make the disassembler understand the prefix as part
2917 ;;; of the instructions...
2918 (define-instruction lock (segment)
2919 (:printer byte ((op #b11110000)))
2921 (bug "LOCK prefix used as a standalone instruction")))
2923 ;;;; miscellaneous hackery
2925 (define-instruction byte (segment byte)
2927 (emit-byte segment byte)))
2929 (define-instruction word (segment word)
2931 (emit-word segment word)))
2933 (define-instruction dword (segment dword)
2935 (emit-dword segment dword)))
2937 (defun emit-header-data (segment type)
2938 (emit-back-patch segment
2940 (lambda (segment posn)
2944 (component-header-length))
2948 (define-instruction simple-fun-header-word (segment)
2950 (emit-header-data segment simple-fun-header-widetag)))
2952 (define-instruction lra-header-word (segment)
2954 (emit-header-data segment return-pc-header-widetag)))
2956 ;;;; Instructions required to do floating point operations using SSE
2958 ;; Return a two-element list of printers for SSE instructions. One
2959 ;; printer is for the format without a REX prefix, the other one for the
2961 (eval-when (:compile-toplevel :execute)
2962 (defun sse-inst-printer-list (inst-format-stem prefix opcode
2963 &key more-fields printer)
2964 (let ((fields `(,@(when prefix
2965 `((prefix ,prefix)))
2968 (inst-formats (if prefix
2969 (list (symbolicate "EXT-" inst-format-stem)
2970 (symbolicate "EXT-REX-" inst-format-stem))
2971 (list inst-format-stem
2972 (symbolicate "REX-" inst-format-stem)))))
2973 (mapcar (lambda (inst-format)
2974 `(,inst-format ,fields ,@(when printer
2978 (defun emit-sse-inst (segment dst src prefix opcode
2979 &key operand-size (remaining-bytes 0))
2981 (emit-byte segment prefix))
2983 (maybe-emit-rex-for-ea segment src dst :operand-size operand-size)
2984 (maybe-emit-rex-for-ea segment src dst))
2985 (emit-byte segment #x0f)
2986 (emit-byte segment opcode)
2987 (emit-ea segment src (reg-tn-encoding dst) :remaining-bytes remaining-bytes))
2989 ;; 0110 0110:0000 1111:0111 00gg: 11 010 xmmreg:imm8
2991 (defun emit-sse-inst-with-imm (segment dst/src imm
2996 (emit-byte segment prefix))
2997 (maybe-emit-rex-prefix segment operand-size dst/src nil nil)
2998 (emit-byte segment #x0F)
2999 (emit-byte segment opcode)
3000 (emit-byte segment (logior (ash (logior #b11000 /i) 3)
3001 (reg-tn-encoding dst/src)))
3002 (emit-byte segment imm))
3005 ((define-imm-sse-instruction (name opcode /i)
3006 `(define-instruction ,name (segment dst/src imm)
3008 ',(sse-inst-printer-list 'xmm-imm #x66 opcode
3009 :more-fields `((/i ,/i))))
3011 (emit-sse-inst-with-imm segment dst/src imm
3013 :operand-size :do-not-set)))))
3014 (define-imm-sse-instruction pslldq #x73 7)
3015 (define-imm-sse-instruction psllw-imm #x71 6)
3016 (define-imm-sse-instruction pslld-imm #x72 6)
3017 (define-imm-sse-instruction psllq-imm #x73 6)
3019 (define-imm-sse-instruction psraw-imm #x71 4)
3020 (define-imm-sse-instruction psrad-imm #x72 4)
3022 (define-imm-sse-instruction psrldq #x73 3)
3023 (define-imm-sse-instruction psrlw-imm #x71 2)
3024 (define-imm-sse-instruction psrld-imm #x72 2)
3025 (define-imm-sse-instruction psrlq-imm #x73 2))
3027 ;;; Emit an SSE instruction that has an XMM register as the destination
3028 ;;; operand and for which the size of the operands is implicitly given
3029 ;;; by the instruction.
3030 (defun emit-regular-sse-inst (segment dst src prefix opcode
3031 &key (remaining-bytes 0))
3032 (aver (xmm-register-p dst))
3033 (emit-sse-inst segment dst src prefix opcode
3034 :operand-size :do-not-set
3035 :remaining-bytes remaining-bytes))
3037 ;;; Instructions having an XMM register as the destination operand
3038 ;;; and an XMM register or a memory location as the source operand.
3039 ;;; The operand size is implicitly given by the instruction.
3041 (macrolet ((define-regular-sse-inst (name prefix opcode)
3042 `(define-instruction ,name (segment dst src)
3044 ',(sse-inst-printer-list 'xmm-xmm/mem prefix opcode))
3046 (emit-regular-sse-inst segment dst src ,prefix ,opcode)))))
3048 (define-regular-sse-inst andpd #x66 #x54)
3049 (define-regular-sse-inst andps nil #x54)
3050 (define-regular-sse-inst andnpd #x66 #x55)
3051 (define-regular-sse-inst andnps nil #x55)
3052 (define-regular-sse-inst orpd #x66 #x56)
3053 (define-regular-sse-inst orps nil #x56)
3054 (define-regular-sse-inst pand #x66 #xdb)
3055 (define-regular-sse-inst pandn #x66 #xdf)
3056 (define-regular-sse-inst por #x66 #xeb)
3057 (define-regular-sse-inst pxor #x66 #xef)
3058 (define-regular-sse-inst xorpd #x66 #x57)
3059 (define-regular-sse-inst xorps nil #x57)
3061 (define-regular-sse-inst comisd #x66 #x2f)
3062 (define-regular-sse-inst comiss nil #x2f)
3063 (define-regular-sse-inst ucomisd #x66 #x2e)
3064 (define-regular-sse-inst ucomiss nil #x2e)
3065 ;; integer comparison
3066 (define-regular-sse-inst pcmpeqb #x66 #x74)
3067 (define-regular-sse-inst pcmpeqw #x66 #x75)
3068 (define-regular-sse-inst pcmpeqd #x66 #x76)
3069 (define-regular-sse-inst pcmpgtb #x66 #x64)
3070 (define-regular-sse-inst pcmpgtw #x66 #x65)
3071 (define-regular-sse-inst pcmpgtd #x66 #x66)
3073 (define-regular-sse-inst maxpd #x66 #x5f)
3074 (define-regular-sse-inst maxps nil #x5f)
3075 (define-regular-sse-inst maxsd #xf2 #x5f)
3076 (define-regular-sse-inst maxss #xf3 #x5f)
3077 (define-regular-sse-inst minpd #x66 #x5d)
3078 (define-regular-sse-inst minps nil #x5d)
3079 (define-regular-sse-inst minsd #xf2 #x5d)
3080 (define-regular-sse-inst minss #xf3 #x5d)
3082 (define-regular-sse-inst pmaxsw #x66 #xee)
3083 (define-regular-sse-inst pmaxub #x66 #xde)
3084 (define-regular-sse-inst pminsw #x66 #xea)
3085 (define-regular-sse-inst pminub #x66 #xda)
3087 (define-regular-sse-inst addpd #x66 #x58)
3088 (define-regular-sse-inst addps nil #x58)
3089 (define-regular-sse-inst addsd #xf2 #x58)
3090 (define-regular-sse-inst addss #xf3 #x58)
3091 (define-regular-sse-inst divpd #x66 #x5e)
3092 (define-regular-sse-inst divps nil #x5e)
3093 (define-regular-sse-inst divsd #xf2 #x5e)
3094 (define-regular-sse-inst divss #xf3 #x5e)
3095 (define-regular-sse-inst mulpd #x66 #x59)
3096 (define-regular-sse-inst mulps nil #x59)
3097 (define-regular-sse-inst mulsd #xf2 #x59)
3098 (define-regular-sse-inst mulss #xf3 #x59)
3099 (define-regular-sse-inst rcpps nil #x53)
3100 (define-regular-sse-inst rcpss #xf3 #x53)
3101 (define-regular-sse-inst rsqrtps nil #x52)
3102 (define-regular-sse-inst rsqrtss #xf3 #x52)
3103 (define-regular-sse-inst sqrtpd #x66 #x51)
3104 (define-regular-sse-inst sqrtps nil #x51)
3105 (define-regular-sse-inst sqrtsd #xf2 #x51)
3106 (define-regular-sse-inst sqrtss #xf3 #x51)
3107 (define-regular-sse-inst subpd #x66 #x5c)
3108 (define-regular-sse-inst subps nil #x5c)
3109 (define-regular-sse-inst subsd #xf2 #x5c)
3110 (define-regular-sse-inst subss #xf3 #x5c)
3111 (define-regular-sse-inst unpckhpd #x66 #x15)
3112 (define-regular-sse-inst unpckhps nil #x15)
3113 (define-regular-sse-inst unpcklpd #x66 #x14)
3114 (define-regular-sse-inst unpcklps nil #x14)
3115 ;; integer arithmetic
3116 (define-regular-sse-inst paddb #x66 #xfc)
3117 (define-regular-sse-inst paddw #x66 #xfd)
3118 (define-regular-sse-inst paddd #x66 #xfe)
3119 (define-regular-sse-inst paddq #x66 #xd4)
3120 (define-regular-sse-inst paddsb #x66 #xec)
3121 (define-regular-sse-inst paddsw #x66 #xed)
3122 (define-regular-sse-inst paddusb #x66 #xdc)
3123 (define-regular-sse-inst paddusw #x66 #xdd)
3124 (define-regular-sse-inst pavgb #x66 #xe0)
3125 (define-regular-sse-inst pavgw #x66 #xe3)
3126 (define-regular-sse-inst pmaddwd #x66 #xf5)
3127 (define-regular-sse-inst pmulhuw #x66 #xe4)
3128 (define-regular-sse-inst pmulhw #x66 #xe5)
3129 (define-regular-sse-inst pmullw #x66 #xd5)
3130 (define-regular-sse-inst pmuludq #x66 #xf4)
3131 (define-regular-sse-inst psadbw #x66 #xf6)
3132 (define-regular-sse-inst psllw #x66 #xf1)
3133 (define-regular-sse-inst pslld #x66 #xf2)
3134 (define-regular-sse-inst psllq #x66 #xf3)
3135 (define-regular-sse-inst psraw #x66 #xe1)
3136 (define-regular-sse-inst psrad #x66 #xe2)
3137 (define-regular-sse-inst psrlw #x66 #xd1)
3138 (define-regular-sse-inst psrld #x66 #xd2)
3139 (define-regular-sse-inst psrlq #x66 #xd3)
3140 (define-regular-sse-inst psubb #x66 #xf8)
3141 (define-regular-sse-inst psubw #x66 #xf9)
3142 (define-regular-sse-inst psubd #x66 #xfa)
3143 (define-regular-sse-inst psubq #x66 #xfb)
3144 (define-regular-sse-inst psubsb #x66 #xe8)
3145 (define-regular-sse-inst psubsw #x66 #xe9)
3146 (define-regular-sse-inst psubusb #x66 #xd8)
3147 (define-regular-sse-inst psubusw #x66 #xd9)
3149 (define-regular-sse-inst cvtdq2pd #xf3 #xe6)
3150 (define-regular-sse-inst cvtdq2ps nil #x5b)
3151 (define-regular-sse-inst cvtpd2dq #xf2 #xe6)
3152 (define-regular-sse-inst cvtpd2ps #x66 #x5a)
3153 (define-regular-sse-inst cvtps2dq #x66 #x5b)
3154 (define-regular-sse-inst cvtps2pd nil #x5a)
3155 (define-regular-sse-inst cvtsd2ss #xf2 #x5a)
3156 (define-regular-sse-inst cvtss2sd #xf3 #x5a)
3157 (define-regular-sse-inst cvttpd2dq #x66 #xe6)
3158 (define-regular-sse-inst cvttps2dq #xf3 #x5b)
3160 (define-regular-sse-inst packsswb #x66 #x63)
3161 (define-regular-sse-inst packssdw #x66 #x6b)
3162 (define-regular-sse-inst packuswb #x66 #x67)
3163 (define-regular-sse-inst punpckhbw #x66 #x68)
3164 (define-regular-sse-inst punpckhwd #x66 #x69)
3165 (define-regular-sse-inst punpckhdq #x66 #x6a)
3166 (define-regular-sse-inst punpckhqdq #x66 #x6d)
3167 (define-regular-sse-inst punpcklbw #x66 #x60)
3168 (define-regular-sse-inst punpcklwd #x66 #x61)
3169 (define-regular-sse-inst punpckldq #x66 #x62)
3170 (define-regular-sse-inst punpcklqdq #x66 #x6c))
3172 (macrolet ((define-xmm-shuffle-sse-inst (name prefix opcode n-bits radix)
3173 (let ((shuffle-pattern
3174 (intern (format nil "SSE-SHUFFLE-PATTERN-~D-~D"
3176 `(define-instruction ,name (segment dst src pattern)
3178 ',(sse-inst-printer-list
3179 'xmm-xmm/mem prefix opcode
3180 :more-fields `((imm nil :type ,shuffle-pattern))
3181 :printer '(:name :tab reg ", " reg/mem ", " imm)))
3184 (aver (typep pattern '(unsigned-byte ,n-bits)))
3185 (emit-regular-sse-inst segment dst src ,prefix ,opcode
3187 (emit-byte segment pattern))))))
3188 (define-xmm-shuffle-sse-inst pshufd #x66 #x70 8 4)
3189 (define-xmm-shuffle-sse-inst pshufhw #xf3 #x70 8 4)
3190 (define-xmm-shuffle-sse-inst pshuflw #xf2 #x70 8 4)
3191 (define-xmm-shuffle-sse-inst shufpd #x66 #xc6 2 2)
3192 (define-xmm-shuffle-sse-inst shufps nil #xc6 8 4))
3194 ;; MASKMOVDQU (dst is DS:RDI)
3195 (define-instruction maskmovdqu (segment src mask)
3197 (sse-inst-printer-list 'xmm-xmm/mem #x66 #xf7))
3199 (aver (xmm-register-p src))
3200 (aver (xmm-register-p mask))
3201 (emit-regular-sse-inst segment src mask #x66 #xf7)))
3203 (macrolet ((define-comparison-sse-inst (name prefix opcode
3204 name-prefix name-suffix)
3205 `(define-instruction ,name (segment op x y)
3207 ',(sse-inst-printer-list
3208 'xmm-xmm/mem prefix opcode
3209 :more-fields '((imm nil :type sse-condition-code))
3210 :printer `(,name-prefix imm ,name-suffix
3211 :tab reg ", " reg/mem)))
3213 (let ((code (position op *sse-conditions*)))
3215 (emit-regular-sse-inst segment x y ,prefix ,opcode
3217 (emit-byte segment code))))))
3218 (define-comparison-sse-inst cmppd #x66 #xc2 "CMP" "PD")
3219 (define-comparison-sse-inst cmpps nil #xc2 "CMP" "PS")
3220 (define-comparison-sse-inst cmpsd #xf2 #xc2 "CMP" "SD")
3221 (define-comparison-sse-inst cmpss #xf3 #xc2 "CMP" "SS"))
3224 (macrolet ((define-movsd/ss-sse-inst (name prefix)
3225 `(define-instruction ,name (segment dst src)
3227 ',(sse-inst-printer-list 'xmm-xmm/mem-dir
3230 (cond ((xmm-register-p dst)
3231 (emit-sse-inst segment dst src ,prefix #x10
3232 :operand-size :do-not-set))
3234 (aver (xmm-register-p src))
3235 (emit-sse-inst segment src dst ,prefix #x11
3236 :operand-size :do-not-set)))))))
3237 (define-movsd/ss-sse-inst movsd #xf2)
3238 (define-movsd/ss-sse-inst movss #xf3))
3241 (macrolet ((define-mov-sse-inst (name prefix opcode-from opcode-to
3242 &key force-to-mem reg-reg-name)
3245 `(define-instruction ,reg-reg-name (segment dst src)
3247 (aver (xmm-register-p dst))
3248 (aver (xmm-register-p src))
3249 (emit-regular-sse-inst segment dst src
3250 ,prefix ,opcode-from))))
3251 (define-instruction ,name (segment dst src)
3253 '(,@(when opcode-from
3254 (sse-inst-printer-list
3255 'xmm-xmm/mem prefix opcode-from))
3256 ,@(sse-inst-printer-list
3257 'xmm-xmm/mem prefix opcode-to
3258 :printer '(:name :tab reg/mem ", " reg))))
3260 (cond ,@(when opcode-from
3261 `(((xmm-register-p dst)
3263 `(aver (not (or (register-p src)
3264 (xmm-register-p src)))))
3265 (emit-regular-sse-inst
3266 segment dst src ,prefix ,opcode-from))))
3268 (aver (xmm-register-p src))
3270 `(aver (not (or (register-p dst)
3271 (xmm-register-p dst)))))
3272 (emit-regular-sse-inst segment src dst
3273 ,prefix ,opcode-to))))))))
3275 (define-mov-sse-inst movapd #x66 #x28 #x29)
3276 (define-mov-sse-inst movaps nil #x28 #x29)
3277 (define-mov-sse-inst movdqa #x66 #x6f #x7f)
3278 (define-mov-sse-inst movdqu #xf3 #x6f #x7f)
3281 (define-mov-sse-inst movntdq #x66 nil #xe7 :force-to-mem t)
3282 (define-mov-sse-inst movntpd #x66 nil #x2b :force-to-mem t)
3283 (define-mov-sse-inst movntps nil nil #x2b :force-to-mem t)
3285 ;; use movhps for movlhps and movlps for movhlps
3286 (define-mov-sse-inst movhpd #x66 #x16 #x17 :force-to-mem t)
3287 (define-mov-sse-inst movhps nil #x16 #x17 :reg-reg-name movlhps)
3288 (define-mov-sse-inst movlpd #x66 #x12 #x13 :force-to-mem t)
3289 (define-mov-sse-inst movlps nil #x12 #x13 :reg-reg-name movhlps)
3290 (define-mov-sse-inst movupd #x66 #x10 #x11)
3291 (define-mov-sse-inst movups nil #x10 #x11))
3294 (define-instruction movq (segment dst src)
3297 (sse-inst-printer-list 'xmm-xmm/mem #xf3 #x7e)
3298 (sse-inst-printer-list 'xmm-xmm/mem #x66 #xd6
3299 :printer '(:name :tab reg/mem ", " reg))))
3301 (cond ((xmm-register-p dst)
3302 (emit-sse-inst segment dst src #xf3 #x7e
3303 :operand-size :do-not-set))
3305 (aver (xmm-register-p src))
3306 (emit-sse-inst segment src dst #x66 #xd6
3307 :operand-size :do-not-set)))))
3309 ;;; Instructions having an XMM register as the destination operand
3310 ;;; and a general-purpose register or a memory location as the source
3311 ;;; operand. The operand size is calculated from the source operand.
3313 ;;; MOVD - Move a 32- or 64-bit value from a general-purpose register or
3314 ;;; a memory location to the low order 32 or 64 bits of an XMM register
3315 ;;; with zero extension or vice versa.
3316 ;;; We do not support the MMX version of this instruction.
3317 (define-instruction movd (segment dst src)
3320 (sse-inst-printer-list 'xmm-reg/mem #x66 #x6e)
3321 (sse-inst-printer-list 'xmm-reg/mem #x66 #x7e
3322 :printer '(:name :tab reg/mem ", " reg))))
3324 (cond ((xmm-register-p dst)
3325 (emit-sse-inst segment dst src #x66 #x6e))
3327 (aver (xmm-register-p src))
3328 (emit-sse-inst segment src dst #x66 #x7e)))))
3330 (define-instruction pinsrw (segment dst src imm)
3332 (sse-inst-printer-list
3333 'xmm-reg/mem #x66 #xc4
3334 :more-fields '((imm nil :type imm-byte))
3335 :printer '(:name :tab reg ", " reg/mem ", " imm)))
3337 (aver (xmm-register-p dst))
3338 (let ((src-size (operand-size src)))
3339 (aver (or (not (register-p src))
3340 (eq src-size :qword) (eq src-size :dword)))
3341 (emit-sse-inst segment dst src #x66 #xc4
3342 :operand-size (if (register-p src) src-size :do-not-set)
3343 :remaining-bytes 1))
3344 (emit-byte segment imm)))
3346 (define-instruction pextrw (segment dst src imm)
3348 (sse-inst-printer-list
3349 'reg-xmm/mem #x66 #xc5
3350 :more-fields '((imm nil :type imm-byte))
3351 :printer '(:name :tab reg ", " reg/mem ", " imm)))
3353 (aver (xmm-register-p src))
3354 (aver (register-p dst))
3355 (let ((dst-size (operand-size dst)))
3356 (aver (or (eq dst-size :qword) (eq dst-size :dword)))
3357 (emit-sse-inst segment dst src #x66 #xc5
3358 :operand-size dst-size
3359 :remaining-bytes 1))
3360 (emit-byte segment imm)))
3362 (macrolet ((define-integer-source-sse-inst (name prefix opcode &key mem-only)
3363 `(define-instruction ,name (segment dst src)
3365 ',(sse-inst-printer-list 'xmm-reg/mem prefix opcode))
3367 (aver (xmm-register-p dst))
3369 `(aver (not (or (register-p src)
3370 (xmm-register-p src)))))
3371 (let ((src-size (operand-size src)))
3372 (aver (or (eq src-size :qword) (eq src-size :dword))))
3373 (emit-sse-inst segment dst src ,prefix ,opcode)))))
3374 (define-integer-source-sse-inst cvtsi2sd #xf2 #x2a)
3375 (define-integer-source-sse-inst cvtsi2ss #xf3 #x2a)
3376 ;; FIXME: memory operand is always a QWORD
3377 (define-integer-source-sse-inst cvtpi2pd #x66 #x2a :mem-only t)
3378 (define-integer-source-sse-inst cvtpi2ps nil #x2a :mem-only t))
3380 ;;; Instructions having a general-purpose register as the destination
3381 ;;; operand and an XMM register or a memory location as the source
3382 ;;; operand. The operand size is calculated from the destination
3385 (macrolet ((define-gpr-destination-sse-inst (name prefix opcode &key reg-only)
3386 `(define-instruction ,name (segment dst src)
3388 ',(sse-inst-printer-list 'reg-xmm/mem prefix opcode))
3390 (aver (register-p dst))
3392 `(aver (xmm-register-p src)))
3393 (let ((dst-size (operand-size dst)))
3394 (aver (or (eq dst-size :qword) (eq dst-size :dword)))
3395 (emit-sse-inst segment dst src ,prefix ,opcode
3396 :operand-size dst-size))))))
3397 (define-gpr-destination-sse-inst cvtsd2si #xf2 #x2d)
3398 (define-gpr-destination-sse-inst cvtss2si #xf3 #x2d)
3399 (define-gpr-destination-sse-inst cvttsd2si #xf2 #x2c)
3400 (define-gpr-destination-sse-inst cvttss2si #xf3 #x2c)
3401 (define-gpr-destination-sse-inst movmskpd #x66 #x50 :reg-only t)
3402 (define-gpr-destination-sse-inst movmskps nil #x50 :reg-only t)
3403 (define-gpr-destination-sse-inst pmovmskb #x66 #xd7 :reg-only t))
3405 ;;; Other SSE instructions
3407 ;; FIXME: is that right!?
3408 (define-instruction movnti (segment dst src)
3409 (:printer ext-reg-reg/mem-no-width ((op #xc3)))
3410 (:printer rex-ext-reg-reg/mem-no-width ((op #xc3)))
3412 (aver (not (or (register-p dst)
3413 (xmm-register-p dst))))
3414 (aver (register-p src))
3415 (maybe-emit-rex-for-ea segment src dst)
3416 (emit-byte segment #x0f)
3417 (emit-byte segment #xc3)
3418 (emit-ea segment dst (reg-tn-encoding src))))
3420 (define-instruction prefetch (segment type src)
3421 (:printer ext-reg/mem-no-width ((op '(#x18 0)))
3422 '("PREFETCHNTA" :tab reg/mem))
3423 (:printer ext-reg/mem-no-width ((op '(#x18 1)))
3424 '("PREFETCHT0" :tab reg/mem))
3425 (:printer ext-reg/mem-no-width ((op '(#x18 2)))
3426 '("PREFETCHT1" :tab reg/mem))
3427 (:printer ext-reg/mem-no-width ((op '(#x18 3)))
3428 '("PREFETCHT2" :tab reg/mem))
3429 (:printer rex-ext-reg/mem-no-width ((op '(#x18 0)))
3430 '("PREFETCHNTA" :tab reg/mem))
3431 (:printer rex-ext-reg/mem-no-width ((op '(#x18 1)))
3432 '("PREFETCHT0" :tab reg/mem))
3433 (:printer rex-ext-reg/mem-no-width ((op '(#x18 2)))
3434 '("PREFETCHT1" :tab reg/mem))
3435 (:printer rex-ext-reg/mem-no-width ((op '(#x18 3)))
3436 '("PREFETCHT2" :tab reg/mem))
3438 (aver (not (or (register-p src)
3439 (xmm-register-p src))))
3440 (aver (eq (operand-size src) :byte))
3441 (let ((type (position type #(:nta :t0 :t1 :t2))))
3443 (maybe-emit-rex-for-ea segment src nil)
3444 (emit-byte segment #x0f)
3445 (emit-byte segment #x18)
3446 (emit-ea segment src type))))
3448 (define-instruction clflush (segment src)
3449 (:printer ext-reg/mem-no-width ((op '(#xae 7))))
3450 (:printer rex-ext-reg/mem-no-width ((op '(#xae 7))))
3452 (aver (not (or (register-p src)
3453 (xmm-register-p src))))
3454 (aver (eq (operand-size src) :byte))
3455 (maybe-emit-rex-for-ea segment src nil)
3456 (emit-byte segment #x0f)
3457 (emit-byte segment #xae)
3458 (emit-ea segment src 7)))
3460 (macrolet ((define-fence-instruction (name last-byte)
3461 `(define-instruction ,name (segment)
3462 (:printer three-bytes ((op '(#x0f #xae ,last-byte))))
3464 (emit-byte segment #x0f)
3465 (emit-byte segment #xae)
3466 (emit-byte segment ,last-byte)))))
3467 (define-fence-instruction lfence #b11101000)
3468 (define-fence-instruction mfence #b11110000)
3469 (define-fence-instruction sfence #b11111000))
3471 (define-instruction pause (segment)
3472 (:printer two-bytes ((op '(#xf3 #x90))))
3474 (emit-byte segment #xf3)
3475 (emit-byte segment #x90)))
3477 (define-instruction ldmxcsr (segment src)
3478 (:printer ext-reg/mem-no-width ((op '(#xae 2))))
3479 (:printer rex-ext-reg/mem-no-width ((op '(#xae 2))))
3481 (aver (not (or (register-p src)
3482 (xmm-register-p src))))
3483 (aver (eq (operand-size src) :dword))
3484 (maybe-emit-rex-for-ea segment src nil)
3485 (emit-byte segment #x0f)
3486 (emit-byte segment #xae)
3487 (emit-ea segment src 2)))
3489 (define-instruction stmxcsr (segment dst)
3490 (:printer ext-reg/mem-no-width ((op '(#xae 3))))
3491 (:printer rex-ext-reg/mem-no-width ((op '(#xae 3))))
3493 (aver (not (or (register-p dst)
3494 (xmm-register-p dst))))
3495 (aver (eq (operand-size dst) :dword))
3496 (maybe-emit-rex-for-ea segment dst nil)
3497 (emit-byte segment #x0f)
3498 (emit-byte segment #xae)
3499 (emit-ea segment dst 3)))
3503 (define-instruction cpuid (segment)
3504 (:printer two-bytes ((op '(#b00001111 #b10100010))))
3506 (emit-byte segment #b00001111)
3507 (emit-byte segment #b10100010)))
3509 (define-instruction rdtsc (segment)
3510 (:printer two-bytes ((op '(#b00001111 #b00110001))))
3512 (emit-byte segment #b00001111)
3513 (emit-byte segment #b00110001)))
3515 ;;;; Late VM definitions
3517 (defun canonicalize-inline-constant (constant &aux (alignedp nil))
3518 (let ((first (car constant)))
3519 (when (eql first :aligned)
3522 (setf first (car constant)))
3524 (single-float (setf constant (list :single-float first)))
3525 (double-float (setf constant (list :double-float first)))
3526 ((complex single-float)
3527 (setf constant (list :complex-single-float first)))
3528 ((complex double-float)
3529 (setf constant (list :complex-double-float first)))))
3530 (destructuring-bind (type value) constant
3532 ((:byte :word :dword :qword)
3533 (aver (integerp value))
3536 (aver (base-char-p value))
3537 (cons :byte (char-code value)))
3539 (aver (characterp value))
3540 (cons :dword (char-code value)))
3542 (aver (typep value 'single-float))
3543 (cons (if alignedp :oword :dword)
3544 (ldb (byte 32 0) (single-float-bits value))))
3546 (aver (typep value 'double-float))
3547 (cons (if alignedp :oword :qword)
3548 (ldb (byte 64 0) (logior (ash (double-float-high-bits value) 32)
3549 (double-float-low-bits value)))))
3550 ((:complex-single-float)
3551 (aver (typep value '(complex single-float)))
3552 (cons (if alignedp :oword :qword)
3554 (logior (ash (single-float-bits (imagpart value)) 32)
3556 (single-float-bits (realpart value)))))))
3558 (aver (integerp value))
3559 (cons :oword value))
3560 ((:complex-double-float)
3561 (aver (typep value '(complex double-float)))
3563 (logior (ash (double-float-high-bits (imagpart value)) 96)
3564 (ash (double-float-low-bits (imagpart value)) 64)
3565 (ash (ldb (byte 32 0)
3566 (double-float-high-bits (realpart value)))
3568 (double-float-low-bits (realpart value))))))))
3570 (defun inline-constant-value (constant)
3571 (let ((label (gen-label))
3572 (size (ecase (car constant)
3573 ((:byte :word :dword :qword) (car constant))
3574 ((:oword) :qword))))
3575 (values label (make-ea size
3576 :disp (make-fixup nil :code-object label)))))
3578 (defun emit-constant-segment-header (constants optimize)
3579 (declare (ignore constants))
3580 (loop repeat (if optimize 64 16) do (inst byte #x90)))
3582 (defun size-nbyte (size)
3590 (defun sort-inline-constants (constants)
3591 (stable-sort constants #'> :key (lambda (constant)
3592 (size-nbyte (caar constant)))))
3594 (defun emit-inline-constant (constant label)
3595 (let ((size (size-nbyte (car constant))))
3596 (emit-alignment (integer-length (1- size)))
3598 (let ((val (cdr constant)))
3600 do (inst byte (ldb (byte 8 0) val))
3601 (setf val (ash val -8))))))