X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fx86-64%2Finsts.lisp;h=614071106707fade9d608d8cbd5b65ccdbacbb6f;hb=a757a48ad4a4531894203461ba5fb626a3ffc511;hp=f6c36aa3d593e7dd1a1d77c7b3629afed2369717;hpb=864c91b95c68eef808008fcb65780119e24831b4;p=sbcl.git diff --git a/src/compiler/x86-64/insts.lisp b/src/compiler/x86-64/insts.lisp index f6c36aa..6140711 100644 --- a/src/compiler/x86-64/insts.lisp +++ b/src/compiler/x86-64/insts.lisp @@ -25,6 +25,9 @@ ;;; This includes legacy registers and R8-R15. (deftype full-reg () '(unsigned-byte 4)) +;;; The XMM registers XMM0 - XMM15. +(deftype xmmreg () '(unsigned-byte 4)) + ;;; Default word size for the chip: if the operand size /= :dword ;;; we need to output #x66 (or REX) prefix (def!constant +default-operand-size+ :dword) @@ -38,11 +41,13 @@ (defun offset-next (value dstate) (declare (type integer value) - (type sb!disassem:disassem-state dstate)) + (type sb!disassem:disassem-state dstate)) (+ (sb!disassem:dstate-next-addr dstate) value)) (defparameter *byte-reg-names* #(al cl dl bl spl bpl sil dil r8b r9b r10b r11b r12b r13b r14b r15b)) +(defparameter *high-byte-reg-names* + #(ah ch dh bh)) (defparameter *word-reg-names* #(ax cx dx bx sp bp si di r8w r9w r10w r11w r12w r13w r14w r15w)) (defparameter *dword-reg-names* @@ -88,48 +93,56 @@ :word :qword)) +;;; Print to STREAM the name of the general-purpose register encoded by +;;; VALUE and of size WIDTH. For robustness, the high byte registers +;;; (AH, BH, CH, DH) are correctly detected, too, although the compiler +;;; does not use them. (defun print-reg-with-width (value width stream dstate) (declare (type full-reg value) - (type stream stream) - (ignore dstate)) - (princ (aref (ecase width - (:byte *byte-reg-names*) - (:word *word-reg-names*) - (:dword *dword-reg-names*) - (:qword *qword-reg-names*)) - value) - stream) + (type stream stream) + (type sb!disassem:disassem-state dstate)) + (princ (if (and (eq width :byte) + (<= 4 value 7) + (not (sb!disassem:dstate-get-inst-prop dstate 'rex))) + (aref *high-byte-reg-names* (- value 4)) + (aref (ecase width + (:byte *byte-reg-names*) + (:word *word-reg-names*) + (:dword *dword-reg-names*) + (:qword *qword-reg-names*)) + value)) + stream) ;; XXX plus should do some source-var notes ) (defun print-reg (value stream dstate) (declare (type full-reg value) - (type stream stream) - (type sb!disassem:disassem-state dstate)) + (type stream stream) + (type sb!disassem:disassem-state dstate)) (print-reg-with-width value (inst-operand-size dstate) - stream - dstate)) + stream + dstate)) (defun print-reg-default-qword (value stream dstate) (declare (type full-reg value) - (type stream stream) - (type sb!disassem:disassem-state dstate)) + (type stream stream) + (type sb!disassem:disassem-state dstate)) (print-reg-with-width value (inst-operand-size-default-qword dstate) - stream - dstate)) + stream + dstate)) (defun print-byte-reg (value stream dstate) (declare (type full-reg value) - (type stream stream) - (type sb!disassem:disassem-state dstate)) + (type stream stream) + (type sb!disassem:disassem-state dstate)) (print-reg-with-width value :byte stream dstate)) (defun print-addr-reg (value stream dstate) (declare (type full-reg value) - (type stream stream) - (type sb!disassem:disassem-state dstate)) + (type stream stream) + (type sb!disassem:disassem-state dstate)) (print-reg-with-width value +default-address-size+ stream dstate)) ;;; Print a register or a memory reference of the given WIDTH. @@ -139,8 +152,8 @@ (declare (type (or list full-reg) value) (type (member :byte :word :dword :qword) width) (type boolean sized-p) - (type stream stream) - (type sb!disassem:disassem-state dstate)) + (type stream stream) + (type sb!disassem:disassem-state dstate)) (if (typep value 'full-reg) (print-reg-with-width value width stream dstate) (print-mem-access value (and sized-p width) stream dstate))) @@ -149,8 +162,8 @@ ;;; calling INST-OPERAND-SIZE. (defun print-reg/mem (value stream dstate) (declare (type (or list full-reg) value) - (type stream stream) - (type sb!disassem:disassem-state dstate)) + (type stream stream) + (type sb!disassem:disassem-state dstate)) (print-reg/mem-with-width value (inst-operand-size dstate) nil stream dstate)) @@ -158,8 +171,8 @@ ;; memory references. (defun print-sized-reg/mem (value stream dstate) (declare (type (or list full-reg) value) - (type stream stream) - (type sb!disassem:disassem-state dstate)) + (type stream stream) + (type sb!disassem:disassem-state dstate)) (print-reg/mem-with-width value (inst-operand-size dstate) t stream dstate)) @@ -167,39 +180,63 @@ ;;; :qword. (defun print-sized-reg/mem-default-qword (value stream dstate) (declare (type (or list full-reg) value) - (type stream stream) - (type sb!disassem:disassem-state dstate)) + (type stream stream) + (type sb!disassem:disassem-state dstate)) (print-reg/mem-with-width value (inst-operand-size-default-qword dstate) t stream dstate)) (defun print-sized-byte-reg/mem (value stream dstate) (declare (type (or list full-reg) value) - (type stream stream) - (type sb!disassem:disassem-state dstate)) + (type stream stream) + (type sb!disassem:disassem-state dstate)) (print-reg/mem-with-width value :byte t stream dstate)) (defun print-sized-word-reg/mem (value stream dstate) (declare (type (or list full-reg) value) - (type stream stream) - (type sb!disassem:disassem-state dstate)) + (type stream stream) + (type sb!disassem:disassem-state dstate)) (print-reg/mem-with-width value :word t stream dstate)) (defun print-sized-dword-reg/mem (value stream dstate) (declare (type (or list full-reg) value) - (type stream stream) - (type sb!disassem:disassem-state dstate)) + (type stream stream) + (type sb!disassem:disassem-state dstate)) (print-reg/mem-with-width value :dword t stream dstate)) (defun print-label (value stream dstate) (declare (ignore dstate)) (sb!disassem:princ16 value stream)) +(defun print-xmmreg (value stream dstate) + (declare (type xmmreg value) + (type stream stream) + (ignore dstate)) + (format stream "XMM~d" value)) + +(defun print-xmmreg/mem (value stream dstate) + (declare (type (or list xmmreg) value) + (type stream stream) + (type sb!disassem:disassem-state dstate)) + (if (typep value 'xmmreg) + (print-xmmreg value stream dstate) + (print-mem-access value nil stream dstate))) + +;; Same as print-xmmreg/mem, but prints an explicit size indicator for +;; memory references. +(defun print-sized-xmmreg/mem (value stream dstate) + (declare (type (or list xmmreg) value) + (type stream stream) + (type sb!disassem:disassem-state dstate)) + (if (typep value 'xmmreg) + (print-xmmreg value stream dstate) + (print-mem-access value (inst-operand-size dstate) stream dstate))) + ;;; This prefilter is used solely for its side effects, namely to put ;;; the bits found in the REX prefix into the DSTATE for use by other ;;; prefilters and by printers. (defun prefilter-wrxb (value dstate) (declare (type (unsigned-byte 4) value) - (type sb!disassem:disassem-state dstate)) + (type sb!disassem:disassem-state dstate)) (sb!disassem:dstate-put-inst-prop dstate 'rex) (when (plusp (logand value #b1000)) (sb!disassem:dstate-put-inst-prop dstate 'rex-w)) @@ -215,15 +252,23 @@ ;;; the property OPERAND-SIZE-8 into the DSTATE if VALUE is 0. (defun prefilter-width (value dstate) (declare (type bit value) - (type sb!disassem:disassem-state dstate)) + (type sb!disassem:disassem-state dstate)) (when (zerop value) (sb!disassem:dstate-put-inst-prop dstate 'operand-size-8)) value) +;;; This prefilter is used solely for its side effect, namely to put +;;; the property OPERAND-SIZE-16 into the DSTATE. +(defun prefilter-x66 (value dstate) + (declare (type (eql #x66) value) + (ignore value) + (type sb!disassem:disassem-state dstate)) + (sb!disassem:dstate-put-inst-prop dstate 'operand-size-16)) + ;;; A register field that can be extended by REX.R. (defun prefilter-reg-r (value dstate) (declare (type reg value) - (type sb!disassem:disassem-state dstate)) + (type sb!disassem:disassem-state dstate)) (if (sb!disassem::dstate-get-inst-prop dstate 'rex-r) (+ value 8) value)) @@ -231,7 +276,7 @@ ;;; A register field that can be extended by REX.B. (defun prefilter-reg-b (value dstate) (declare (type reg value) - (type sb!disassem:disassem-state dstate)) + (type sb!disassem:disassem-state dstate)) (if (sb!disassem::dstate-get-inst-prop dstate 'rex-b) (+ value 8) value)) @@ -247,58 +292,58 @@ ;;; INDEX-REG. (defun prefilter-reg/mem (value dstate) (declare (type list value) - (type sb!disassem:disassem-state dstate)) + (type sb!disassem:disassem-state dstate)) (let ((mod (first value)) - (r/m (second value))) + (r/m (second value))) (declare (type (unsigned-byte 2) mod) - (type (unsigned-byte 3) r/m)) + (type (unsigned-byte 3) r/m)) (let ((full-reg (if (sb!disassem:dstate-get-inst-prop dstate 'rex-b) (+ r/m 8) r/m))) (declare (type full-reg full-reg)) (cond ((= mod #b11) - ;; registers - full-reg) - ((= r/m #b100) - ;; sib byte - (let ((sib (sb!disassem:read-suffix 8 dstate))) - (declare (type (unsigned-byte 8) sib)) - (let ((base-reg (ldb (byte 3 0) sib)) - (index-reg (ldb (byte 3 3) sib)) - (index-scale (ldb (byte 2 6) sib))) - (declare (type (unsigned-byte 3) base-reg index-reg) - (type (unsigned-byte 2) index-scale)) - (let* ((offset - (case mod - (#b00 - (if (= base-reg #b101) - (sb!disassem:read-signed-suffix 32 dstate) - nil)) - (#b01 - (sb!disassem:read-signed-suffix 8 dstate)) - (#b10 - (sb!disassem:read-signed-suffix 32 dstate))))) - (list (unless (and (= mod #b00) (= base-reg #b101)) + ;; registers + full-reg) + ((= r/m #b100) + ;; sib byte + (let ((sib (sb!disassem:read-suffix 8 dstate))) + (declare (type (unsigned-byte 8) sib)) + (let ((base-reg (ldb (byte 3 0) sib)) + (index-reg (ldb (byte 3 3) sib)) + (index-scale (ldb (byte 2 6) sib))) + (declare (type (unsigned-byte 3) base-reg index-reg) + (type (unsigned-byte 2) index-scale)) + (let* ((offset + (case mod + (#b00 + (if (= base-reg #b101) + (sb!disassem:read-signed-suffix 32 dstate) + nil)) + (#b01 + (sb!disassem:read-signed-suffix 8 dstate)) + (#b10 + (sb!disassem:read-signed-suffix 32 dstate))))) + (list (unless (and (= mod #b00) (= base-reg #b101)) (if (sb!disassem:dstate-get-inst-prop dstate 'rex-b) (+ base-reg 8) base-reg)) - offset - (unless (= index-reg #b100) + offset + (unless (= index-reg #b100) (if (sb!disassem:dstate-get-inst-prop dstate 'rex-x) (+ index-reg 8) index-reg)) - (ash 1 index-scale)))))) - ((and (= mod #b00) (= r/m #b101)) - (list 'rip (sb!disassem:read-signed-suffix 32 dstate)) ) - ((= mod #b00) - (list full-reg)) - ((= mod #b01) - (list full-reg (sb!disassem:read-signed-suffix 8 dstate))) - (t ; (= mod #b10) - (list full-reg (sb!disassem:read-signed-suffix 32 dstate))))))) + (ash 1 index-scale)))))) + ((and (= mod #b00) (= r/m #b101)) + (list 'rip (sb!disassem:read-signed-suffix 32 dstate))) + ((= mod #b00) + (list full-reg)) + ((= mod #b01) + (list full-reg (sb!disassem:read-signed-suffix 8 dstate))) + (t ; (= mod #b10) + (list full-reg (sb!disassem:read-signed-suffix 32 dstate))))))) (defun read-address (value dstate) - (declare (ignore value)) ; always nil anyway + (declare (ignore value)) ; always nil anyway (sb!disassem:read-suffix (width-bits (inst-operand-size dstate)) dstate)) (defun width-bits (width) @@ -306,9 +351,7 @@ (:byte 8) (:word 16) (:dword 32) - (:qword 64) - (:float 32) - (:double 64))) + (:qword 64))) ) ; EVAL-WHEN @@ -325,19 +368,23 @@ (princ (schar (symbol-name (inst-operand-size dstate)) 0) stream))) +;;; Used to capture the effect of the #x66 operand size override prefix. +(sb!disassem:define-arg-type x66 + :prefilter #'prefilter-x66) + (sb!disassem:define-arg-type displacement :sign-extend t :use-label #'offset-next :printer (lambda (value stream dstate) - (sb!disassem:maybe-note-assembler-routine value nil dstate) - (print-label value stream dstate))) + (sb!disassem:maybe-note-assembler-routine value nil dstate) + (print-label value stream dstate))) (sb!disassem:define-arg-type accum :printer (lambda (value stream dstate) - (declare (ignore value) - (type stream stream) - (type sb!disassem:disassem-state dstate)) - (print-reg 0 stream dstate))) + (declare (ignore value) + (type stream stream) + (type sb!disassem:disassem-state dstate)) + (print-reg 0 stream dstate))) (sb!disassem:define-arg-type reg :prefilter #'prefilter-reg-r @@ -360,7 +407,7 @@ ;;; argument type definition following this one. (sb!disassem:define-arg-type signed-imm-data :prefilter (lambda (value dstate) - (declare (ignore value)) ; always nil anyway + (declare (ignore value)) ; always nil anyway (let ((width (width-bits (inst-operand-size dstate)))) (when (= width 64) (setf width 32)) @@ -371,7 +418,7 @@ ;;; register. (sb!disassem:define-arg-type signed-imm-data-upto-qword :prefilter (lambda (value dstate) - (declare (ignore value)) ; always nil anyway + (declare (ignore value)) ; always nil anyway (sb!disassem:read-signed-suffix (width-bits (inst-operand-size dstate)) dstate))) @@ -382,7 +429,7 @@ ;;; argument is PUSH. (sb!disassem:define-arg-type signed-imm-data-default-qword :prefilter (lambda (value dstate) - (declare (ignore value)) ; always nil anyway + (declare (ignore value)) ; always nil anyway (let ((width (width-bits (inst-operand-size-default-qword dstate)))) (when (= width 64) @@ -391,19 +438,19 @@ (sb!disassem:define-arg-type signed-imm-byte :prefilter (lambda (value dstate) - (declare (ignore value)) ; always nil anyway - (sb!disassem:read-signed-suffix 8 dstate))) + (declare (ignore value)) ; always nil anyway + (sb!disassem:read-signed-suffix 8 dstate))) (sb!disassem:define-arg-type imm-byte :prefilter (lambda (value dstate) - (declare (ignore value)) ; always nil anyway - (sb!disassem:read-suffix 8 dstate))) + (declare (ignore value)) ; always nil anyway + (sb!disassem:read-suffix 8 dstate))) ;;; needed for the ret imm16 instruction (sb!disassem:define-arg-type imm-word-16 :prefilter (lambda (value dstate) - (declare (ignore value)) ; always nil anyway - (sb!disassem:read-suffix 16 dstate))) + (declare (ignore value)) ; always nil anyway + (sb!disassem:read-suffix 16 dstate))) (sb!disassem:define-arg-type reg/mem :prefilter #'prefilter-reg/mem @@ -430,19 +477,19 @@ :prefilter #'prefilter-reg/mem :printer #'print-sized-reg/mem-default-qword) -;;; added by jrd -(eval-when (#-sb-xc :compile-toplevel :load-toplevel :execute) -(defun print-fp-reg (value stream dstate) - (declare (ignore dstate)) - (format stream "FR~D" value)) -(defun prefilter-fp-reg (value dstate) - ;; just return it - (declare (ignore dstate)) - value) -) ; EVAL-WHEN -(sb!disassem:define-arg-type fp-reg - :prefilter #'prefilter-fp-reg - :printer #'print-fp-reg) +;;; XMM registers +(sb!disassem:define-arg-type xmmreg + :prefilter #'prefilter-reg-r + :printer #'print-xmmreg) + +(sb!disassem:define-arg-type xmmreg/mem + :prefilter #'prefilter-reg/mem + :printer #'print-xmmreg/mem) + +(sb!disassem:define-arg-type sized-xmmreg/mem + :prefilter #'prefilter-reg/mem + :printer #'print-sized-xmmreg/mem) + (eval-when (:compile-toplevel :load-toplevel :execute) (defparameter *conditions* @@ -466,7 +513,7 @@ (let ((vec (make-array 16 :initial-element nil))) (dolist (cond *conditions*) (when (null (aref vec (cdr cond))) - (setf (aref vec (cdr cond)) (car cond)))) + (setf (aref vec (cdr cond)) (car cond)))) vec)) ) ; EVAL-WHEN @@ -486,8 +533,8 @@ (eval-when (:compile-toplevel :execute) (defun swap-if (direction field1 separator field2) `(:if (,direction :constant 0) - (,field1 ,separator ,field2) - (,field2 ,separator ,field1)))) + (,field1 ,separator ,field2) + (,field2 ,separator ,field1)))) (sb!disassem:define-instruction-format (byte 8 :default-printer '(:name)) (op :field (byte 8 0)) @@ -496,7 +543,7 @@ (imm)) ;;; A one-byte instruction with a #x66 prefix, used to indicate an -;;; operand size of :word. +;;; operand size of :word. (sb!disassem:define-instruction-format (x66-byte 16 :default-printer '(:name)) (x66 :field (byte 8 0) :value #x66) @@ -534,30 +581,30 @@ ;;; Same as simple, but with the immediate value occurring by default, ;;; and with an appropiate printer. (sb!disassem:define-instruction-format (accum-imm 8 - :include 'simple - :default-printer '(:name - :tab accum ", " imm)) + :include 'simple + :default-printer '(:name + :tab accum ", " imm)) (imm :type 'signed-imm-data)) (sb!disassem:define-instruction-format (rex-accum-imm 16 - :include 'rex-simple - :default-printer '(:name - :tab accum ", " imm)) + :include 'rex-simple + :default-printer '(:name + :tab accum ", " imm)) (imm :type 'signed-imm-data)) (sb!disassem:define-instruction-format (reg-no-width 8 - :default-printer '(:name :tab reg)) - (op :field (byte 5 3)) + :default-printer '(:name :tab reg)) + (op :field (byte 5 3)) (reg :field (byte 3 0) :type 'reg-b) ;; optional fields (accum :type 'accum) (imm)) (sb!disassem:define-instruction-format (rex-reg-no-width 16 - :default-printer '(:name :tab reg)) + :default-printer '(:name :tab reg)) (rex :field (byte 4 4) :value #b0100) (wrxb :field (byte 4 0) :type 'wrxb) - (op :field (byte 5 11)) + (op :field (byte 5 11)) (reg :field (byte 3 8) :type 'reg-b) ;; optional fields (accum :type 'accum) @@ -565,34 +612,22 @@ ;;; Same as reg-no-width, but with a default operand size of :qword. (sb!disassem:define-instruction-format (reg-no-width-default-qword 8 - :include 'reg-no-width + :include 'reg-no-width :default-printer '(:name :tab reg)) (reg :type 'reg-b-default-qword)) ;;; Same as rex-reg-no-width, but with a default operand size of :qword. (sb!disassem:define-instruction-format (rex-reg-no-width-default-qword 16 - :include 'rex-reg-no-width + :include 'rex-reg-no-width :default-printer '(:name :tab reg)) (reg :type 'reg-b-default-qword)) -(sb!disassem:define-instruction-format (modrm-reg-no-width 24 - :default-printer '(:name :tab reg)) - (rex :field (byte 4 4) :value #b0100) - (wrxb :field (byte 4 0) :type 'wrxb) - (ff :field (byte 8 8) :value #b11111111) - (mod :field (byte 2 22)) - (modrm-reg :field (byte 3 19)) - (reg :field (byte 3 16) :type 'reg-b) - ;; optional fields - (accum :type 'accum) - (imm)) - ;;; Adds a width field to reg-no-width. Note that we can't use ;;; :INCLUDE 'REG-NO-WIDTH here to save typing because that would put ;;; the WIDTH field last, but the prefilter for WIDTH must run before ;;; the one for IMM to be able to determine the correct size of IMM. (sb!disassem:define-instruction-format (reg 8 - :default-printer '(:name :tab reg)) + :default-printer '(:name :tab reg)) (op :field (byte 4 4)) (width :field (byte 1 3) :type 'width) (reg :field (byte 3 0) :type 'reg-b) @@ -601,7 +636,7 @@ (imm)) (sb!disassem:define-instruction-format (rex-reg 16 - :default-printer '(:name :tab reg)) + :default-printer '(:name :tab reg)) (rex :field (byte 4 4) :value #b0100) (wrxb :field (byte 4 0) :type 'wrxb) (width :field (byte 1 11) :type 'width) @@ -612,68 +647,96 @@ (imm)) (sb!disassem:define-instruction-format (two-bytes 16 - :default-printer '(:name)) + :default-printer '(:name)) (op :fields (list (byte 8 0) (byte 8 8)))) (sb!disassem:define-instruction-format (reg-reg/mem 16 - :default-printer - `(:name :tab reg ", " reg/mem)) + :default-printer + `(:name :tab reg ", " reg/mem)) (op :field (byte 7 1)) - (width :field (byte 1 0) :type 'width) + (width :field (byte 1 0) :type 'width) (reg/mem :fields (list (byte 2 14) (byte 3 8)) - :type 'reg/mem) - (reg :field (byte 3 11) :type 'reg) + :type 'reg/mem) + (reg :field (byte 3 11) :type 'reg) ;; optional fields (imm)) (sb!disassem:define-instruction-format (rex-reg-reg/mem 24 - :default-printer - `(:name :tab reg ", " reg/mem)) + :default-printer + `(:name :tab reg ", " reg/mem)) (rex :field (byte 4 4) :value #b0100) (wrxb :field (byte 4 0) :type 'wrxb) - (width :field (byte 1 8) :type 'width) + (width :field (byte 1 8) :type 'width) (op :field (byte 7 9)) (reg/mem :fields (list (byte 2 22) (byte 3 16)) - :type 'reg/mem) - (reg :field (byte 3 19) :type 'reg) + :type 'reg/mem) + (reg :field (byte 3 19) :type 'reg) ;; optional fields (imm)) ;;; same as reg-reg/mem, but with direction bit (sb!disassem:define-instruction-format (reg-reg/mem-dir 16 - :include 'reg-reg/mem - :default-printer - `(:name - :tab - ,(swap-if 'dir 'reg/mem ", " 'reg))) + :include 'reg-reg/mem + :default-printer + `(:name + :tab + ,(swap-if 'dir 'reg/mem ", " 'reg))) (op :field (byte 6 2)) (dir :field (byte 1 1))) (sb!disassem:define-instruction-format (rex-reg-reg/mem-dir 24 - :include 'rex-reg-reg/mem - :default-printer - `(:name - :tab - ,(swap-if 'dir 'reg/mem ", " 'reg))) + :include 'rex-reg-reg/mem + :default-printer + `(:name + :tab + ,(swap-if 'dir 'reg/mem ", " 'reg))) (op :field (byte 6 10)) (dir :field (byte 1 9))) +(sb!disassem:define-instruction-format (x66-reg-reg/mem-dir 24 + :default-printer + `(:name + :tab + ,(swap-if 'dir 'reg/mem ", " 'reg))) + (x66 :field (byte 8 0) :type 'x66 :value #x66) + (op :field (byte 6 10)) + (dir :field (byte 1 9)) + (width :field (byte 1 8) :type 'width) + (reg/mem :fields (list (byte 2 22) (byte 3 16)) + :type 'reg/mem) + (reg :field (byte 3 19) :type 'reg)) + +(sb!disassem:define-instruction-format (x66-rex-reg-reg/mem-dir 32 + :default-printer + `(:name + :tab + ,(swap-if 'dir 'reg/mem ", " 'reg))) + (x66 :field (byte 8 0) :type 'x66 :value #x66) + (rex :field (byte 4 12) :value #b0100) + (wrxb :field (byte 4 8) :type 'wrxb) + (op :field (byte 6 18)) + (dir :field (byte 1 17)) + (width :field (byte 1 16) :type 'width) + (reg/mem :fields (list (byte 2 30) (byte 3 24)) + :type 'reg/mem) + (reg :field (byte 3 27) :type 'reg)) + ;;; Same as reg-reg/mem, but uses the reg field as a second op code. (sb!disassem:define-instruction-format (reg/mem 16 - :default-printer '(:name :tab reg/mem)) + :default-printer '(:name :tab reg/mem)) (op :fields (list (byte 7 1) (byte 3 11))) - (width :field (byte 1 0) :type 'width) + (width :field (byte 1 0) :type 'width) (reg/mem :fields (list (byte 2 14) (byte 3 8)) - :type 'sized-reg/mem) + :type 'sized-reg/mem) ;; optional fields (imm)) (sb!disassem:define-instruction-format (rex-reg/mem 24 - :default-printer '(:name :tab reg/mem)) + :default-printer '(:name :tab reg/mem)) (rex :field (byte 4 4) :value #b0100) (wrxb :field (byte 4 0) :type 'wrxb) (op :fields (list (byte 7 9) (byte 3 19))) - (width :field (byte 1 8) :type 'width) + (width :field (byte 1 8) :type 'width) (reg/mem :fields (list (byte 2 22) (byte 3 16)) :type 'sized-reg/mem) ;; optional fields @@ -685,7 +748,7 @@ :default-printer '(:name :tab reg/mem)) (op :fields (list (byte 8 0) (byte 3 11))) (reg/mem :fields (list (byte 2 14) (byte 3 8)) - :type 'sized-reg/mem-default-qword)) + :type 'sized-reg/mem-default-qword)) (sb!disassem:define-instruction-format (rex-reg/mem-default-qword 24 :default-printer '(:name :tab reg/mem)) @@ -698,16 +761,16 @@ ;;; Same as reg/mem, but with the immediate value occurring by default, ;;; and with an appropiate printer. (sb!disassem:define-instruction-format (reg/mem-imm 16 - :include 'reg/mem - :default-printer - '(:name :tab reg/mem ", " imm)) + :include 'reg/mem + :default-printer + '(:name :tab reg/mem ", " imm)) (reg/mem :type 'sized-reg/mem) (imm :type 'signed-imm-data)) (sb!disassem:define-instruction-format (rex-reg/mem-imm 24 - :include 'rex-reg/mem - :default-printer - '(:name :tab reg/mem ", " imm)) + :include 'rex-reg/mem + :default-printer + '(:name :tab reg/mem ", " imm)) (reg/mem :type 'sized-reg/mem) (imm :type 'signed-imm-data)) @@ -715,190 +778,243 @@ (sb!disassem:define-instruction-format (accum-reg/mem 16 :include 'reg/mem :default-printer '(:name :tab accum ", " reg/mem)) - (reg/mem :type 'reg/mem) ; don't need a size + (reg/mem :type 'reg/mem) ; don't need a size (accum :type 'accum)) (sb!disassem:define-instruction-format (rex-accum-reg/mem 24 :include 'rex-reg/mem :default-printer '(:name :tab accum ", " reg/mem)) - (reg/mem :type 'reg/mem) ; don't need a size + (reg/mem :type 'reg/mem) ; don't need a size (accum :type 'accum)) ;;; Same as reg-reg/mem, but with a prefix of #b00001111 (sb!disassem:define-instruction-format (ext-reg-reg/mem 24 - :default-printer - `(:name :tab reg ", " reg/mem)) - (prefix :field (byte 8 0) :value #b00001111) + :default-printer + `(:name :tab reg ", " reg/mem)) + (prefix :field (byte 8 0) :value #b00001111) (op :field (byte 7 9)) - (width :field (byte 1 8) :type 'width) + (width :field (byte 1 8) :type 'width) (reg/mem :fields (list (byte 2 22) (byte 3 16)) - :type 'reg/mem) - (reg :field (byte 3 19) :type 'reg) + :type 'reg/mem) + (reg :field (byte 3 19) :type 'reg) ;; optional fields (imm)) (sb!disassem:define-instruction-format (ext-reg-reg/mem-no-width 24 - :default-printer - `(:name :tab reg ", " reg/mem)) - (prefix :field (byte 8 0) :value #b00001111) + :default-printer + `(:name :tab reg ", " reg/mem)) + (prefix :field (byte 8 0) :value #b00001111) (op :field (byte 8 8)) (reg/mem :fields (list (byte 2 22) (byte 3 16)) - :type 'reg/mem) - (reg :field (byte 3 19) :type 'reg)) + :type 'reg/mem) + (reg :field (byte 3 19) :type 'reg)) (sb!disassem:define-instruction-format (rex-ext-reg-reg/mem-no-width 32 - :default-printer - `(:name :tab reg ", " reg/mem)) + :default-printer + `(:name :tab reg ", " reg/mem)) (rex :field (byte 4 4) :value #b0100) (wrxb :field (byte 4 0) :type 'wrxb) - (prefix :field (byte 8 8) :value #b00001111) + (prefix :field (byte 8 8) :value #b00001111) (op :field (byte 8 16)) (reg/mem :fields (list (byte 2 30) (byte 3 24)) - :type 'reg/mem) - (reg :field (byte 3 27) :type 'reg)) - -;;; Same as reg-reg/mem, but with a prefix of #xf2 0f -(sb!disassem:define-instruction-format (xmm-ext-reg-reg/mem 32 - :default-printer - `(:name :tab reg ", " reg/mem)) - (prefix :field (byte 8 0) :value #xf2) - (prefix2 :field (byte 8 8) :value #x0f) - (op :field (byte 7 17)) - (width :field (byte 1 16) :type 'width) - (reg/mem :fields (list (byte 2 30) (byte 3 24)) - :type 'reg/mem) - (reg :field (byte 3 27) :type 'reg) - ;; optional fields - (imm)) + :type 'reg/mem) + (reg :field (byte 3 27) :type 'reg)) ;;; reg-no-width with #x0f prefix (sb!disassem:define-instruction-format (ext-reg-no-width 16 - :default-printer '(:name :tab reg)) - (prefix :field (byte 8 0) :value #b00001111) - (op :field (byte 5 11)) + :default-printer '(:name :tab reg)) + (prefix :field (byte 8 0) :value #b00001111) + (op :field (byte 5 11)) (reg :field (byte 3 8) :type 'reg-b)) ;;; Same as reg/mem, but with a prefix of #b00001111 (sb!disassem:define-instruction-format (ext-reg/mem 24 - :default-printer '(:name :tab reg/mem)) - (prefix :field (byte 8 0) :value #b00001111) + :default-printer '(:name :tab reg/mem)) + (prefix :field (byte 8 0) :value #b00001111) (op :fields (list (byte 7 9) (byte 3 19))) - (width :field (byte 1 8) :type 'width) + (width :field (byte 1 8) :type 'width) (reg/mem :fields (list (byte 2 22) (byte 3 16)) - :type 'sized-reg/mem) + :type 'sized-reg/mem) ;; optional fields (imm)) (sb!disassem:define-instruction-format (ext-reg/mem-imm 24 :include 'ext-reg/mem - :default-printer + :default-printer '(:name :tab reg/mem ", " imm)) (imm :type 'signed-imm-data)) -;;;; This section was added by jrd, for fp instructions. - -;;; regular fp inst to/from registers/memory -(sb!disassem:define-instruction-format (floating-point 16 - :default-printer - `(:name :tab reg/mem)) - (prefix :field (byte 5 3) :value #b11011) - (op :fields (list (byte 3 0) (byte 3 11))) - (reg/mem :fields (list (byte 2 14) (byte 3 8)) :type 'reg/mem)) - -;;; fp insn to/from fp reg -(sb!disassem:define-instruction-format (floating-point-fp 16 - :default-printer `(:name :tab fp-reg)) - (prefix :field (byte 5 3) :value #b11011) - (suffix :field (byte 2 14) :value #b11) - (op :fields (list (byte 3 0) (byte 3 11))) - (fp-reg :field (byte 3 8) :type 'fp-reg)) - -;;; fp insn to/from fp reg, with the reversed source/destination flag. -(sb!disassem:define-instruction-format - (floating-point-fp-d 16 - :default-printer `(:name :tab ,(swap-if 'd "ST0" ", " 'fp-reg))) - (prefix :field (byte 5 3) :value #b11011) - (suffix :field (byte 2 14) :value #b11) - (op :fields (list (byte 2 0) (byte 3 11))) - (d :field (byte 1 2)) - (fp-reg :field (byte 3 8) :type 'fp-reg)) - - -;;; (added by (?) pfw) -;;; fp no operand isns -(sb!disassem:define-instruction-format (floating-point-no 16 - :default-printer '(:name)) - (prefix :field (byte 8 0) :value #b11011001) - (suffix :field (byte 3 13) :value #b111) - (op :field (byte 5 8))) - -(sb!disassem:define-instruction-format (floating-point-3 16 - :default-printer '(:name)) - (prefix :field (byte 5 3) :value #b11011) - (suffix :field (byte 2 14) :value #b11) - (op :fields (list (byte 3 0) (byte 6 8)))) - -(sb!disassem:define-instruction-format (floating-point-5 16 - :default-printer '(:name)) - (prefix :field (byte 8 0) :value #b11011011) - (suffix :field (byte 3 13) :value #b111) - (op :field (byte 5 8))) - -(sb!disassem:define-instruction-format (floating-point-st 16 - :default-printer '(:name)) - (prefix :field (byte 8 0) :value #b11011111) - (suffix :field (byte 3 13) :value #b111) - (op :field (byte 5 8))) +;;;; XMM instructions + +;;; All XMM instructions use an extended opcode (#x0F as the first +;;; opcode byte). Therefore in the following "EXT" in the name of the +;;; instruction formats refers to the formats that have an additional +;;; prefix (#x66, #xF2 or #xF3). + +;;; Instructions having an XMM register as the destination operand +;;; and an XMM register or a memory location as the source operand. +;;; The size of the operands is implicitly given by the instruction. +(sb!disassem:define-instruction-format (xmm-xmm/mem 24 + :default-printer + '(:name :tab reg ", " reg/mem)) + (x0f :field (byte 8 0) :value #x0f) + (op :field (byte 8 8)) + (reg/mem :fields (list (byte 2 22) (byte 3 16)) + :type 'xmmreg/mem) + (reg :field (byte 3 19) :type 'xmmreg)) + +(sb!disassem:define-instruction-format (rex-xmm-xmm/mem 32 + :default-printer + '(:name :tab reg ", " reg/mem)) + (x0f :field (byte 8 0) :value #x0f) + (rex :field (byte 4 12) :value #b0100) + (wrxb :field (byte 4 8) :type 'wrxb) + (op :field (byte 8 16)) + (reg/mem :fields (list (byte 2 30) (byte 3 24)) + :type 'xmmreg/mem) + (reg :field (byte 3 27) :type 'xmmreg)) + +(sb!disassem:define-instruction-format (ext-xmm-xmm/mem 32 + :default-printer + '(:name :tab reg ", " reg/mem)) + (prefix :field (byte 8 0)) + (x0f :field (byte 8 8) :value #x0f) + (op :field (byte 8 16)) + (reg/mem :fields (list (byte 2 30) (byte 3 24)) + :type 'xmmreg/mem) + (reg :field (byte 3 27) :type 'xmmreg)) + +(sb!disassem:define-instruction-format (ext-rex-xmm-xmm/mem 40 + :default-printer + '(:name :tab reg ", " reg/mem)) + (prefix :field (byte 8 0)) + (rex :field (byte 4 12) :value #b0100) + (wrxb :field (byte 4 8) :type 'wrxb) + (x0f :field (byte 8 16) :value #x0f) + (op :field (byte 8 24)) + (reg/mem :fields (list (byte 2 38) (byte 3 32)) + :type 'xmmreg/mem) + (reg :field (byte 3 35) :type 'xmmreg)) + +;;; Same as xmm-xmm/mem etc., but with direction bit. + +(sb!disassem:define-instruction-format (ext-xmm-xmm/mem-dir 32 + :include 'ext-xmm-xmm/mem + :default-printer + `(:name + :tab + ,(swap-if 'dir 'reg ", " 'reg/mem))) + (op :field (byte 7 17)) + (dir :field (byte 1 16))) + +(sb!disassem:define-instruction-format (ext-rex-xmm-xmm/mem-dir 40 + :include 'ext-rex-xmm-xmm/mem + :default-printer + `(:name + :tab + ,(swap-if 'dir 'reg ", " 'reg/mem))) + (op :field (byte 7 25)) + (dir :field (byte 1 24))) + +;;; Instructions having an XMM register as one operand and a general- +;;; -purpose register or a memory location as the other operand. + +(sb!disassem:define-instruction-format (ext-xmm-reg/mem 32 + :default-printer + '(:name :tab reg ", " reg/mem)) + (prefix :field (byte 8 0)) + (x0f :field (byte 8 8) :value #x0f) + (op :field (byte 8 16)) + (reg/mem :fields (list (byte 2 30) (byte 3 24)) + :type 'sized-reg/mem) + (reg :field (byte 3 27) :type 'xmmreg)) + +(sb!disassem:define-instruction-format (ext-rex-xmm-reg/mem 40 + :default-printer + '(:name :tab reg ", " reg/mem)) + (prefix :field (byte 8 0)) + (rex :field (byte 4 12) :value #b0100) + (wrxb :field (byte 4 8) :type 'wrxb) + (x0f :field (byte 8 16) :value #x0f) + (op :field (byte 8 24)) + (reg/mem :fields (list (byte 2 38) (byte 3 32)) + :type 'sized-reg/mem) + (reg :field (byte 3 35) :type 'xmmreg)) + +;;; Instructions having a general-purpose register as one operand and an +;;; XMM register or a memory location as the other operand. + +(sb!disassem:define-instruction-format (ext-reg-xmm/mem 32 + :default-printer + '(:name :tab reg ", " reg/mem)) + (prefix :field (byte 8 0)) + (x0f :field (byte 8 8) :value #x0f) + (op :field (byte 8 16)) + (reg/mem :fields (list (byte 2 30) (byte 3 24)) + :type 'sized-xmmreg/mem) + (reg :field (byte 3 27) :type 'reg)) + +(sb!disassem:define-instruction-format (ext-rex-reg-xmm/mem 40 + :default-printer + '(:name :tab reg ", " reg/mem)) + (prefix :field (byte 8 0)) + (rex :field (byte 4 12) :value #b0100) + (wrxb :field (byte 4 8) :type 'wrxb) + (x0f :field (byte 8 16) :value #x0f) + (op :field (byte 8 24)) + (reg/mem :fields (list (byte 2 38) (byte 3 32)) + :type 'sized-xmmreg/mem) + (reg :field (byte 3 35) :type 'reg)) (sb!disassem:define-instruction-format (string-op 8 - :include 'simple - :default-printer '(:name width))) + :include 'simple + :default-printer '(:name width))) (sb!disassem:define-instruction-format (rex-string-op 16 - :include 'rex-simple - :default-printer '(:name width))) + :include 'rex-simple + :default-printer '(:name width))) (sb!disassem:define-instruction-format (short-cond-jump 16) (op :field (byte 4 4)) - (cc :field (byte 4 0) :type 'condition-code) + (cc :field (byte 4 0) :type 'condition-code) (label :field (byte 8 8) :type 'displacement)) (sb!disassem:define-instruction-format (short-jump 16 - :default-printer '(:name :tab label)) + :default-printer '(:name :tab label)) (const :field (byte 4 4) :value #b1110) - (op :field (byte 4 0)) + (op :field (byte 4 0)) (label :field (byte 8 8) :type 'displacement)) (sb!disassem:define-instruction-format (near-cond-jump 16) (op :fields (list (byte 8 0) (byte 4 12)) :value '(#b00001111 #b1000)) - (cc :field (byte 4 8) :type 'condition-code) + (cc :field (byte 4 8) :type 'condition-code) ;; The disassembler currently doesn't let you have an instruction > 32 bits ;; long, so we fake it by using a prefilter to read the offset. (label :type 'displacement - :prefilter (lambda (value dstate) - (declare (ignore value)) ; always nil anyway - (sb!disassem:read-signed-suffix 32 dstate)))) + :prefilter (lambda (value dstate) + (declare (ignore value)) ; always nil anyway + (sb!disassem:read-signed-suffix 32 dstate)))) (sb!disassem:define-instruction-format (near-jump 8 - :default-printer '(:name :tab label)) + :default-printer '(:name :tab label)) (op :field (byte 8 0)) ;; The disassembler currently doesn't let you have an instruction > 32 bits ;; long, so we fake it by using a prefilter to read the address. (label :type 'displacement - :prefilter (lambda (value dstate) - (declare (ignore value)) ; always nil anyway - (sb!disassem:read-signed-suffix 32 dstate)))) + :prefilter (lambda (value dstate) + (declare (ignore value)) ; always nil anyway + (sb!disassem:read-signed-suffix 32 dstate)))) (sb!disassem:define-instruction-format (cond-set 24 - :default-printer '('set cc :tab reg/mem)) + :default-printer '('set cc :tab reg/mem)) (prefix :field (byte 8 0) :value #b00001111) (op :field (byte 4 12) :value #b1001) - (cc :field (byte 4 8) :type 'condition-code) + (cc :field (byte 4 8) :type 'condition-code) (reg/mem :fields (list (byte 2 22) (byte 3 16)) - :type 'sized-byte-reg/mem) - (reg :field (byte 3 19) :value #b000)) + :type 'sized-byte-reg/mem) + (reg :field (byte 3 19) :value #b000)) (sb!disassem:define-instruction-format (cond-move 24 :default-printer @@ -923,17 +1039,17 @@ (reg :field (byte 3 27) :type 'reg)) (sb!disassem:define-instruction-format (enter-format 32 - :default-printer '(:name - :tab disp - (:unless (:constant 0) - ", " level))) + :default-printer '(:name + :tab disp + (:unless (:constant 0) + ", " level))) (op :field (byte 8 0)) (disp :field (byte 16 8)) (level :field (byte 8 24))) ;;; Single byte instruction with an immediate byte argument. (sb!disassem:define-instruction-format (byte-imm 16 - :default-printer '(:name :tab code)) + :default-printer '(:name :tab code)) (op :field (byte 8 0)) (code :field (byte 8 8))) @@ -945,6 +1061,17 @@ (define-bitfield-emitter emit-dword 32 (byte 32 0)) +;;; Most uses of dwords are as displacements or as immediate values in +;;; 64-bit operations. In these cases they are sign-extended to 64 bits. +;;; EMIT-DWORD is unsuitable there because it accepts values of type +;;; (OR (SIGNED-BYTE 32) (UNSIGNED-BYTE 32)), so we provide a more +;;; restricted emitter here. +(defun emit-signed-dword (segment value) + (declare (type segment segment) + (type (signed-byte 32) value)) + (declare (inline emit-dword)) + (emit-dword segment value)) + (define-bitfield-emitter emit-qword 64 (byte 64 0)) @@ -968,44 +1095,44 @@ (note-fixup segment (if quad-p :absolute64 :absolute) fixup) (let ((offset (fixup-offset fixup))) (if (label-p offset) - (emit-back-patch segment - (if quad-p 8 4) - (lambda (segment posn) - (declare (ignore posn)) - (let ((val (- (+ (component-header-length) - (or (label-position offset) - 0)) - other-pointer-lowtag))) - (if quad-p - (emit-qword segment val ) - (emit-dword segment val ))))) - (if quad-p - (emit-qword segment (or offset 0)) - (emit-dword segment (or offset 0)))))) + (emit-back-patch segment + (if quad-p 8 4) + (lambda (segment posn) + (declare (ignore posn)) + (let ((val (- (+ (component-header-length) + (or (label-position offset) + 0)) + other-pointer-lowtag))) + (if quad-p + (emit-qword segment val) + (emit-signed-dword segment val))))) + (if quad-p + (emit-qword segment (or offset 0)) + (emit-signed-dword segment (or offset 0)))))) (defun emit-relative-fixup (segment fixup) (note-fixup segment :relative fixup) - (emit-dword segment (or (fixup-offset fixup) 0))) + (emit-signed-dword segment (or (fixup-offset fixup) 0))) ;;;; the effective-address (ea) structure (defun reg-tn-encoding (tn) (declare (type tn tn)) - (aver (member (sb-name (sc-sb (tn-sc tn))) '(registers float-registers))) ;; ea only has space for three bits of register number: regs r8 ;; and up are selected by a REX prefix byte which caller is responsible ;; for having emitted where necessary already - (cond ((fp-reg-tn-p tn) - (mod (tn-offset tn) 8)) - (t - (let ((offset (mod (tn-offset tn) 16))) - (logior (ash (logand offset 1) 2) - (ash offset -1)))))) - + (ecase (sb-name (sc-sb (tn-sc tn))) + (registers + (let ((offset (mod (tn-offset tn) 16))) + (logior (ash (logand offset 1) 2) + (ash offset -1)))) + (float-registers + (mod (tn-offset tn) 8)))) + (defstruct (ea (:constructor make-ea (size &key base index scale disp)) - (:copier nil)) - ;; note that we can represent an EA qith a QWORD size, but EMIT-EA + (:copier nil)) + ;; note that we can represent an EA with a QWORD size, but EMIT-EA ;; can't actually emit it on its own: caller also needs to emit REX ;; prefix (size nil :type (member :byte :word :dword :qword)) @@ -1015,32 +1142,32 @@ (disp 0 :type (or (unsigned-byte 32) (signed-byte 32) fixup))) (def!method print-object ((ea ea) stream) (cond ((or *print-escape* *print-readably*) - (print-unreadable-object (ea stream :type t) - (format stream - "~S~@[ base=~S~]~@[ index=~S~]~@[ scale=~S~]~@[ disp=~S~]" - (ea-size ea) - (ea-base ea) - (ea-index ea) - (let ((scale (ea-scale ea))) - (if (= scale 1) nil scale)) - (ea-disp ea)))) - (t - (format stream "~A PTR [" (symbol-name (ea-size ea))) - (when (ea-base ea) - (write-string (sb!c::location-print-name (ea-base ea)) stream) - (when (ea-index ea) - (write-string "+" stream))) - (when (ea-index ea) - (write-string (sb!c::location-print-name (ea-index ea)) stream)) - (unless (= (ea-scale ea) 1) - (format stream "*~A" (ea-scale ea))) - (typecase (ea-disp ea) - (null) - (integer - (format stream "~@D" (ea-disp ea))) - (t - (format stream "+~A" (ea-disp ea)))) - (write-char #\] stream)))) + (print-unreadable-object (ea stream :type t) + (format stream + "~S~@[ base=~S~]~@[ index=~S~]~@[ scale=~S~]~@[ disp=~S~]" + (ea-size ea) + (ea-base ea) + (ea-index ea) + (let ((scale (ea-scale ea))) + (if (= scale 1) nil scale)) + (ea-disp ea)))) + (t + (format stream "~A PTR [" (symbol-name (ea-size ea))) + (when (ea-base ea) + (write-string (sb!c::location-print-name (ea-base ea)) stream) + (when (ea-index ea) + (write-string "+" stream))) + (when (ea-index ea) + (write-string (sb!c::location-print-name (ea-index ea)) stream)) + (unless (= (ea-scale ea) 1) + (format stream "*~A" (ea-scale ea))) + (typecase (ea-disp ea) + (null) + (integer + (format stream "~@D" (ea-disp ea))) + (t + (format stream "+~A" (ea-disp ea)))) + (write-char #\] stream)))) (defun emit-constant-tn-rip (segment constant-tn reg) ;; AMD64 doesn't currently have a code object register to use as a @@ -1051,26 +1178,27 @@ ;; that stores the constant. Since we don't know where the code header ;; starts, instead count backwards from the function header. (let* ((2comp (component-info *component-being-compiled*)) - (constants (ir2-component-constants 2comp)) - (len (length constants)) - ;; Both CODE-HEADER and SIMPLE-FUN-HEADER are 16-byte aligned. - ;; If there are an even amount of constants, there will be - ;; an extra qword of padding before the function header, which - ;; needs to be adjusted for. XXX: This will break if new slots - ;; are added to the code header. - (offset (* (- (+ len (if (evenp len) - 1 - 2)) - (tn-offset constant-tn)) - n-word-bytes))) + (constants (ir2-component-constants 2comp)) + (len (length constants)) + ;; Both CODE-HEADER and SIMPLE-FUN-HEADER are 16-byte aligned. + ;; If there are an even amount of constants, there will be + ;; an extra qword of padding before the function header, which + ;; needs to be adjusted for. XXX: This will break if new slots + ;; are added to the code header. + (offset (* (- (+ len (if (evenp len) + 1 + 2)) + (tn-offset constant-tn)) + n-word-bytes))) ;; RIP-relative addressing (emit-mod-reg-r/m-byte segment #b00 reg #b101) (emit-back-patch segment - 4 - (lambda (segment posn) - ;; The addressing is relative to end of instruction, - ;; i.e. the end of this dword. Hence the + 4. - (emit-dword segment (+ 4 (- (+ offset posn))))))) + 4 + (lambda (segment posn) + ;; The addressing is relative to end of instruction, + ;; i.e. the end of this dword. Hence the + 4. + (emit-signed-dword segment + (+ 4 (- (+ offset posn))))))) (values)) (defun emit-label-rip (segment fixup reg) @@ -1078,10 +1206,10 @@ ;; RIP-relative addressing (emit-mod-reg-r/m-byte segment #b00 reg #b101) (emit-back-patch segment - 4 - (lambda (segment posn) - (emit-dword segment (- (label-position label) - (+ posn 4)))))) + 4 + (lambda (segment posn) + (emit-signed-dword segment (- (label-position label) + (+ posn 4)))))) (values)) (defun emit-ea (segment thing reg &optional allow-constants) @@ -1091,80 +1219,68 @@ ;; an ea given a tn (ecase (sb-name (sc-sb (tn-sc thing))) ((registers float-registers) - (emit-mod-reg-r/m-byte segment #b11 reg (reg-tn-encoding thing))) + (emit-mod-reg-r/m-byte segment #b11 reg (reg-tn-encoding thing))) (stack - ;; Convert stack tns into an index off RBP. - (let ((disp (- (* (1+ (tn-offset thing)) n-word-bytes)))) - (cond ((< -128 disp 127) - (emit-mod-reg-r/m-byte segment #b01 reg #b101) - (emit-byte segment disp)) - (t - (emit-mod-reg-r/m-byte segment #b10 reg #b101) - (emit-dword segment disp))))) + ;; Convert stack tns into an index off RBP. + (let ((disp (- (* (1+ (tn-offset thing)) n-word-bytes)))) + (cond ((<= -128 disp 127) + (emit-mod-reg-r/m-byte segment #b01 reg #b101) + (emit-byte segment disp)) + (t + (emit-mod-reg-r/m-byte segment #b10 reg #b101) + (emit-signed-dword segment disp))))) (constant - (unless allow-constants - ;; Why? - (error - "Constant TNs can only be directly used in MOV, PUSH, and CMP.")) - (emit-constant-tn-rip segment thing reg)))) + (unless allow-constants + ;; Why? + (error + "Constant TNs can only be directly used in MOV, PUSH, and CMP.")) + (emit-constant-tn-rip segment thing reg)))) (ea (let* ((base (ea-base thing)) - (index (ea-index thing)) - (scale (ea-scale thing)) - (disp (ea-disp thing)) - (mod (cond ((or (null base) - (and (eql disp 0) - (not (= (reg-tn-encoding base) #b101)))) - #b00) - ((and (fixnump disp) (<= -128 disp 127)) - #b01) - (t - #b10))) - (r/m (cond (index #b100) - ((null base) #b101) - (t (reg-tn-encoding base))))) + (index (ea-index thing)) + (scale (ea-scale thing)) + (disp (ea-disp thing)) + (mod (cond ((or (null base) + (and (eql disp 0) + (not (= (reg-tn-encoding base) #b101)))) + #b00) + ((and (fixnump disp) (<= -128 disp 127)) + #b01) + (t + #b10))) + (r/m (cond (index #b100) + ((null base) #b101) + (t (reg-tn-encoding base))))) (when (and (= mod 0) (= r/m #b101)) - ;; this is rip-relative in amd64, so we'll use a sib instead - (setf r/m #b100 scale 1)) + ;; this is rip-relative in amd64, so we'll use a sib instead + (setf r/m #b100 scale 1)) (emit-mod-reg-r/m-byte segment mod reg r/m) (when (= r/m #b100) - (let ((ss (1- (integer-length scale))) - (index (if (null index) - #b100 - (let ((index (reg-tn-encoding index))) - (if (= index #b100) - (error "can't index off of ESP") - index)))) - (base (if (null base) - #b101 - (reg-tn-encoding base)))) - (emit-sib-byte segment ss index base))) + (let ((ss (1- (integer-length scale))) + (index (if (null index) + #b100 + (let ((index (reg-tn-encoding index))) + (if (= index #b100) + (error "can't index off of ESP") + index)))) + (base (if (null base) + #b101 + (reg-tn-encoding base)))) + (emit-sib-byte segment ss index base))) (cond ((= mod #b01) - (emit-byte segment disp)) - ((or (= mod #b10) (null base)) - (if (fixup-p disp) - (emit-absolute-fixup segment disp) - (emit-dword segment disp)))))) + (emit-byte segment disp)) + ((or (= mod #b10) (null base)) + (if (fixup-p disp) + (emit-absolute-fixup segment disp) + (emit-signed-dword segment disp)))))) (fixup (typecase (fixup-offset thing) (label - (emit-label-rip segment thing reg)) + (emit-label-rip segment thing reg)) (t - (emit-mod-reg-r/m-byte segment #b00 reg #b100) - (emit-sib-byte segment 0 #b100 #b101) - (emit-absolute-fixup segment thing)))))) - -(defun fp-reg-tn-p (thing) - (and (tn-p thing) - (eq (sb-name (sc-sb (tn-sc thing))) 'float-registers))) - -;;; like the above, but for fp-instructions--jrd -(defun emit-fp-op (segment thing op) - (if (fp-reg-tn-p thing) - (emit-byte segment (dpb op (byte 3 3) (dpb (tn-offset thing) - (byte 3 0) - #b11000000))) - (emit-ea segment thing op))) + (emit-mod-reg-r/m-byte segment #b00 reg #b100) + (emit-sib-byte segment 0 #b100 #b101) + (emit-absolute-fixup segment thing)))))) (defun byte-reg-p (thing) (and (tn-p thing) @@ -1217,6 +1333,7 @@ (and (member (sc-name (tn-sc thing)) *qword-sc-names*) t)) (t nil))) +;;; Return true if THING is a general-purpose register TN. (defun register-p (thing) (and (tn-p thing) (eq (sb-name (sc-sb (tn-sc thing))) 'registers))) @@ -1225,46 +1342,109 @@ (and (register-p thing) (= (tn-offset thing) 0))) +;;; Return true if THING is an XMM register TN. +(defun xmm-register-p (thing) + (and (tn-p thing) + (eq (sb-name (sc-sb (tn-sc thing))) 'float-registers))) + ;;;; utilities (def!constant +operand-size-prefix-byte+ #b01100110) (defun maybe-emit-operand-size-prefix (segment size) - (unless (or (eq size :byte) - (eq size :qword) ; REX prefix handles this - (eq size +default-operand-size+)) + (unless (or (eq size :byte) + (eq size :qword) ; REX prefix handles this + (eq size +default-operand-size+)) (emit-byte segment +operand-size-prefix-byte+))) +;;; A REX prefix must be emitted if at least one of the following +;;; conditions is true: +;; 1. The operand size is :QWORD and the default operand size of the +;; instruction is not :QWORD. +;;; 2. The instruction references an extended register. +;;; 3. The instruction references one of the byte registers SIL, DIL, +;;; SPL or BPL. + +;;; Emit a REX prefix if necessary. OPERAND-SIZE is used to determine +;;; whether to set REX.W. Callers pass it explicitly as :DO-NOT-SET if +;;; this should not happen, for example because the instruction's +;;; default operand size is qword. R, X and B are NIL or TNs specifying +;;; registers the encodings of which are extended with the REX.R, REX.X +;;; and REX.B bit, respectively. To determine whether one of the byte +;;; registers is used that can only be accessed using a REX prefix, we +;;; need only to test R and B, because X is only used for the index +;;; register of an effective address and therefore never byte-sized. +;;; For R we can avoid to calculate the size of the TN because it is +;;; always OPERAND-SIZE. The size of B must be calculated here because +;;; B can be address-sized (if it is the base register of an effective +;;; address), of OPERAND-SIZE (if the instruction operates on two +;;; registers) or of some different size (in the instructions that +;;; combine arguments of different sizes: MOVZX, MOVSX, MOVSXD and +;;; several SSE instructions, e.g. CVTSD2SI). We don't distinguish +;;; between general-purpose and floating point registers for this cause +;;; because only general-purpose registers can be byte-sized at all. (defun maybe-emit-rex-prefix (segment operand-size r x b) + (declare (type (member nil :byte :word :dword :qword :do-not-set) + operand-size) + (type (or null tn) r x b)) (labels ((if-hi (r) - (if (and r (> (tn-offset r) - ;; offset of r8 is 16, offset of xmm8 is 8 - (if (fp-reg-tn-p r) - 7 - 15))) - 1 - 0))) + (if (and r (> (tn-offset r) + ;; offset of r8 is 16, offset of xmm8 is 8 + (if (eq (sb-name (sc-sb (tn-sc r))) + 'float-registers) + 7 + 15))) + 1 + 0)) + (reg-4-7-p (r) + ;; Assuming R is a TN describing a general-purpose + ;; register, return true if it references register + ;; 4 upto 7. + (<= 8 (tn-offset r) 15))) (let ((rex-w (if (eq operand-size :qword) 1 0)) - (rex-r (if-hi r)) - (rex-x (if-hi x)) - (rex-b (if-hi b))) - (when (or (eq operand-size :byte) ;; REX needed to access SIL/DIL - (not (zerop (logior rex-w rex-r rex-x rex-b)))) - (emit-rex-byte segment #b0100 rex-w rex-r rex-x rex-b))))) - -(defun maybe-emit-rex-for-ea (segment ea reg &key operand-size) - (let ((ea-p (ea-p ea))) ;emit-ea can also be called with a tn + (rex-r (if-hi r)) + (rex-x (if-hi x)) + (rex-b (if-hi b))) + (when (or (not (zerop (logior rex-w rex-r rex-x rex-b))) + (and r + (eq operand-size :byte) + (reg-4-7-p r)) + (and b + (eq (operand-size b) :byte) + (reg-4-7-p b))) + (emit-rex-byte segment #b0100 rex-w rex-r rex-x rex-b))))) + +;;; Emit a REX prefix if necessary. The operand size is determined from +;;; THING or can be overwritten by OPERAND-SIZE. This and REG are always +;;; passed to MAYBE-EMIT-REX-PREFIX. Additionally, if THING is an EA we +;;; pass its index and base registers, if it is a register TN, we pass +;;; only itself. +;;; In contrast to EMIT-EA above, neither stack TNs nor fixups need to +;;; be treated specially here: If THING is a stack TN, neither it nor +;;; any of its components are passed to MAYBE-EMIT-REX-PREFIX which +;;; works correctly because stack references always use RBP as the base +;;; register and never use an index register so no extended registers +;;; need to be accessed. Fixups are assembled using an addressing mode +;;; of displacement-only or RIP-plus-displacement (see EMIT-EA), so may +;;; not reference an extended register. The displacement-only addressing +;;; mode requires that REX.X is 0, which is ensured here. +(defun maybe-emit-rex-for-ea (segment thing reg &key operand-size) + (declare (type (or ea tn fixup) thing) + (type (or null tn) reg) + (type (member nil :byte :word :dword :qword :do-not-set) + operand-size)) + (let ((ea-p (ea-p thing))) (maybe-emit-rex-prefix segment - (or operand-size (operand-size ea)) - reg - (and ea-p (ea-index ea)) - (cond (ea-p (ea-base ea)) - ((and (tn-p ea) - (member (sb-name (sc-sb (tn-sc ea))) - '(float-registers registers))) - ea) - (t nil))))) + (or operand-size (operand-size thing)) + reg + (and ea-p (ea-index thing)) + (cond (ea-p (ea-base thing)) + ((and (tn-p thing) + (member (sb-name (sc-sb (tn-sc thing))) + '(float-registers registers))) + thing) + (t nil))))) (defun operand-size (thing) (typecase thing @@ -1273,20 +1453,27 @@ ;; to hack up the code (case (sc-name (tn-sc thing)) (#.*qword-sc-names* - :qword) + :qword) (#.*dword-sc-names* - :dword) + :dword) (#.*word-sc-names* - :word) + :word) (#.*byte-sc-names* - :byte) + :byte) ;; added by jrd: float-registers is a separate size (?) + ;; The only place in the code where we are called with THING + ;; being a float-register is in MAYBE-EMIT-REX-PREFIX when it + ;; checks whether THING is a byte register. Thus our result in + ;; these cases could as well be :dword and :qword. I leave it as + ;; :float and :double which is more likely to trigger an aver + ;; instead of silently doing the wrong thing in case this + ;; situation should change. Lutz Euler, 2005-10-23. (#.*float-sc-names* - :float) + :float) (#.*double-sc-names* - :double) + :double) (t - (error "can't tell the size of ~S ~S" thing (sc-name (tn-sc thing)))))) + (error "can't tell the size of ~S ~S" thing (sc-name (tn-sc thing)))))) (ea (ea-size thing)) (fixup @@ -1301,46 +1488,91 @@ (defun matching-operand-size (dst src) (let ((dst-size (operand-size dst)) - (src-size (operand-size src))) + (src-size (operand-size src))) (if dst-size - (if src-size - (if (eq dst-size src-size) - dst-size - (error "size mismatch: ~S is a ~S and ~S is a ~S." - dst dst-size src src-size)) - dst-size) - (if src-size - src-size - (error "can't tell the size of either ~S or ~S" dst src))))) - -(defun emit-sized-immediate (segment size value &optional quad-p) + (if src-size + (if (eq dst-size src-size) + dst-size + (error "size mismatch: ~S is a ~S and ~S is a ~S." + dst dst-size src src-size)) + dst-size) + (if src-size + src-size + (error "can't tell the size of either ~S or ~S" dst src))))) + +;;; Except in a very few cases (MOV instructions A1, A3 and B8 - BF) +;;; we expect dword data bytes even when 64 bit work is being done. +;;; But A1 and A3 are currently unused and B8 - BF use EMIT-QWORD +;;; directly, so we emit all quad constants as dwords, additionally +;;; making sure that they survive the sign-extension to 64 bits +;;; unchanged. +(defun emit-sized-immediate (segment size value) (ecase size (:byte (emit-byte segment value)) (:word (emit-word segment value)) - ((:dword :qword) - ;; except in a very few cases (MOV instructions A1,A3,B8) we expect - ;; dword data bytes even when 64 bit work is being done. So, mostly - ;; we treat quad constants as dwords. - (if (and quad-p (eq size :qword)) - (emit-qword segment value) - (emit-dword segment value))))) + (:dword + (emit-dword segment value)) + (:qword + (emit-signed-dword segment value)))) ;;;; general data transfer +;;; This is the part of the MOV instruction emitter that does moving +;;; of an immediate value into a qword register. We go to some length +;;; to achieve the shortest possible encoding. +(defun emit-immediate-move-to-qword-register (segment dst src) + (declare (type integer src)) + (cond ((typep src '(unsigned-byte 32)) + ;; We use the B8 - BF encoding with an operand size of 32 bits + ;; here and let the implicit zero-extension fill the upper half + ;; of the 64-bit destination register. Instruction size: five + ;; or six bytes. (A REX prefix will be emitted only if the + ;; destination is an extended register.) + (maybe-emit-rex-prefix segment :dword nil nil dst) + (emit-byte-with-reg segment #b10111 (reg-tn-encoding dst)) + (emit-dword segment src)) + (t + (maybe-emit-rex-prefix segment :qword nil nil dst) + (cond ((typep src '(signed-byte 32)) + ;; Use the C7 encoding that takes a 32-bit immediate and + ;; sign-extends it to 64 bits. Instruction size: seven + ;; bytes. + (emit-byte segment #b11000111) + (emit-mod-reg-r/m-byte segment #b11 #b000 + (reg-tn-encoding dst)) + (emit-signed-dword segment src)) + ((<= (- (expt 2 64) (expt 2 31)) + src + (1- (expt 2 64))) + ;; This triggers on positive integers of 64 bits length + ;; with the most significant 33 bits being 1. We use the + ;; same encoding as in the previous clause. + (emit-byte segment #b11000111) + (emit-mod-reg-r/m-byte segment #b11 #b000 + (reg-tn-encoding dst)) + (emit-signed-dword segment (- src (expt 2 64)))) + (t + ;; We need a full 64-bit immediate. Instruction size: + ;; ten bytes. + (emit-byte-with-reg segment #b10111 (reg-tn-encoding dst)) + (emit-qword segment src)))))) + (define-instruction mov (segment dst src) ;; immediate to register (:printer reg ((op #b1011) (imm nil :type 'signed-imm-data)) - '(:name :tab reg ", " imm)) + '(:name :tab reg ", " imm)) (:printer rex-reg ((op #b1011) (imm nil :type 'signed-imm-data-upto-qword)) - '(:name :tab reg ", " imm)) + '(:name :tab reg ", " imm)) ;; absolute mem to/from accumulator (:printer simple-dir ((op #b101000) (imm nil :type 'imm-addr)) - `(:name :tab ,(swap-if 'dir 'accum ", " '("[" imm "]")))) + `(:name :tab ,(swap-if 'dir 'accum ", " '("[" imm "]")))) ;; register to/from register/memory (:printer reg-reg/mem-dir ((op #b100010))) (:printer rex-reg-reg/mem-dir ((op #b100010))) + (:printer x66-reg-reg/mem-dir ((op #b100010))) + (:printer x66-rex-reg-reg/mem-dir ((op #b100010))) ;; immediate to register/memory (:printer reg/mem-imm ((op '(#b1100011 #b000)))) (:printer rex-reg/mem-imm ((op '(#b1100011 #b000)))) @@ -1349,94 +1581,92 @@ (let ((size (matching-operand-size dst src))) (maybe-emit-operand-size-prefix segment size) (cond ((register-p dst) - (cond ((integerp src) - (maybe-emit-rex-prefix segment size nil nil dst) - (emit-byte-with-reg segment - (if (eq size :byte) - #b10110 - #b10111) - (reg-tn-encoding dst)) - (emit-sized-immediate segment size src (eq size :qword))) - (t - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment - (if (eq size :byte) - #b10001010 - #b10001011)) - (emit-ea segment src (reg-tn-encoding dst) t)))) - ((integerp src) - ;; C7 only deals with 32 bit immediates even if register is - ;; 64 bit: only b8-bf use 64 bit immediates - (maybe-emit-rex-for-ea segment dst nil) - (cond ((typep src '(or (signed-byte 32) (unsigned-byte 32))) - (emit-byte segment - (if (eq size :byte) #b11000110 #b11000111)) - (emit-ea segment dst #b000) - (emit-sized-immediate segment - (case size (:qword :dword) (t size)) - src)) - (t - (aver nil)))) - ((register-p src) - (maybe-emit-rex-for-ea segment dst src) - (emit-byte segment (if (eq size :byte) #b10001000 #b10001001)) - (emit-ea segment dst (reg-tn-encoding src))) - ((fixup-p src) - ;; Generally we can't MOV a fixupped value into an EA, since - ;; MOV on non-registers can only take a 32-bit immediate arg. - ;; Make an exception for :FOREIGN fixups (pretty much just - ;; the runtime asm, since other foreign calls go through the - ;; the linkage table) and for linkage table references, since - ;; these should always end up in low memory. - (aver (or (eq (fixup-flavor src) :foreign) - (eq (fixup-flavor src) :foreign-dataref) - (eq (ea-size dst) :dword))) - (maybe-emit-rex-for-ea segment dst nil) - (emit-byte segment #b11000111) - (emit-ea segment dst #b000) - (emit-absolute-fixup segment src)) - (t - (error "bogus arguments to MOV: ~S ~S" dst src)))))) + (cond ((integerp src) + (cond ((eq size :qword) + (emit-immediate-move-to-qword-register segment + dst src)) + (t + (maybe-emit-rex-prefix segment size nil nil dst) + (emit-byte-with-reg segment + (if (eq size :byte) + #b10110 + #b10111) + (reg-tn-encoding dst)) + (emit-sized-immediate segment size src)))) + (t + (maybe-emit-rex-for-ea segment src dst) + (emit-byte segment + (if (eq size :byte) + #b10001010 + #b10001011)) + (emit-ea segment src (reg-tn-encoding dst) t)))) + ((integerp src) + ;; C7 only deals with 32 bit immediates even if the + ;; destination is a 64-bit location. The value is + ;; sign-extended in this case. + (maybe-emit-rex-for-ea segment dst nil) + (emit-byte segment (if (eq size :byte) #b11000110 #b11000111)) + (emit-ea segment dst #b000) + (emit-sized-immediate segment size src)) + ((register-p src) + (maybe-emit-rex-for-ea segment dst src) + (emit-byte segment (if (eq size :byte) #b10001000 #b10001001)) + (emit-ea segment dst (reg-tn-encoding src))) + ((fixup-p src) + ;; Generally we can't MOV a fixupped value into an EA, since + ;; MOV on non-registers can only take a 32-bit immediate arg. + ;; Make an exception for :FOREIGN fixups (pretty much just + ;; the runtime asm, since other foreign calls go through the + ;; the linkage table) and for linkage table references, since + ;; these should always end up in low memory. + (aver (or (eq (fixup-flavor src) :foreign) + (eq (fixup-flavor src) :foreign-dataref) + (eq (ea-size dst) :dword))) + (maybe-emit-rex-for-ea segment dst nil) + (emit-byte segment #b11000111) + (emit-ea segment dst #b000) + (emit-absolute-fixup segment src)) + (t + (error "bogus arguments to MOV: ~S ~S" dst src)))))) (defun emit-move-with-extension (segment dst src signed-p) (aver (register-p dst)) (let ((dst-size (operand-size dst)) - (src-size (operand-size src)) - (opcode (if signed-p #b10111110 #b10110110))) + (src-size (operand-size src)) + (opcode (if signed-p #b10111110 #b10110110))) (ecase dst-size (:word (aver (eq src-size :byte)) (maybe-emit-operand-size-prefix segment :word) + ;; REX prefix is needed if SRC is SIL, DIL, SPL or BPL. + (maybe-emit-rex-for-ea segment src dst :operand-size :word) (emit-byte segment #b00001111) (emit-byte segment opcode) (emit-ea segment src (reg-tn-encoding dst))) ((:dword :qword) (ecase src-size - (:byte - (maybe-emit-operand-size-prefix segment :dword) - (maybe-emit-rex-for-ea segment src dst - :operand-size (operand-size dst)) - (emit-byte segment #b00001111) - (emit-byte segment opcode) - (emit-ea segment src (reg-tn-encoding dst))) - (:word - (maybe-emit-rex-for-ea segment src dst - :operand-size (operand-size dst)) - (emit-byte segment #b00001111) - (emit-byte segment (logior opcode 1)) - (emit-ea segment src (reg-tn-encoding dst))) - (:dword - (aver (eq dst-size :qword)) - ;; dst is in reg, src is in modrm - (let ((ea-p (ea-p src))) - (maybe-emit-rex-prefix segment (if signed-p :qword :dword) dst - (and ea-p (ea-index src)) - (cond (ea-p (ea-base src)) - ((tn-p src) src) - (t nil))) - (emit-byte segment #x63) ;movsxd - ;;(emit-byte segment opcode) - (emit-ea segment src (reg-tn-encoding dst))))))))) + (:byte + (maybe-emit-rex-for-ea segment src dst :operand-size dst-size) + (emit-byte segment #b00001111) + (emit-byte segment opcode) + (emit-ea segment src (reg-tn-encoding dst))) + (:word + (maybe-emit-rex-for-ea segment src dst :operand-size dst-size) + (emit-byte segment #b00001111) + (emit-byte segment (logior opcode 1)) + (emit-ea segment src (reg-tn-encoding dst))) + (:dword + (aver (eq dst-size :qword)) + ;; dst is in reg, src is in modrm + (let ((ea-p (ea-p src))) + (maybe-emit-rex-prefix segment (if signed-p :qword :dword) dst + (and ea-p (ea-index src)) + (cond (ea-p (ea-base src)) + ((tn-p src) src) + (t nil))) + (emit-byte segment #x63) ;movsxd + ;;(emit-byte segment opcode) + (emit-ea segment src (reg-tn-encoding dst))))))))) (define-instruction movsx (segment dst src) (:printer ext-reg-reg/mem-no-width @@ -1486,32 +1716,33 @@ (:printer rex-reg/mem-default-qword ((op '(#b11111111 #b110)))) ;; immediate (:printer byte ((op #b01101010) (imm nil :type 'signed-imm-byte)) - '(:name :tab imm)) + '(:name :tab imm)) (:printer byte ((op #b01101000) (imm nil :type 'signed-imm-data-default-qword)) - '(:name :tab imm)) + '(:name :tab imm)) ;; ### segment registers? (:emitter (cond ((integerp src) - (cond ((<= -128 src 127) - (emit-byte segment #b01101010) - (emit-byte segment src)) - (t - ;; AMD64 manual says no REX needed but is unclear - ;; whether it expects 32 or 64 bit immediate here - (emit-byte segment #b01101000) - (emit-dword segment src)))) - (t - (let ((size (operand-size src))) - (aver (not (eq size :byte))) - (maybe-emit-operand-size-prefix segment size) - (maybe-emit-rex-for-ea segment src nil) - (cond ((register-p src) - (emit-byte-with-reg segment #b01010 (reg-tn-encoding src))) - (t - (emit-byte segment #b11111111) - (emit-ea segment src #b110 t)))))))) + (cond ((<= -128 src 127) + (emit-byte segment #b01101010) + (emit-byte segment src)) + (t + ;; A REX-prefix is not needed because the operand size + ;; defaults to 64 bits. The size of the immediate is 32 + ;; bits and it is sign-extended. + (emit-byte segment #b01101000) + (emit-signed-dword segment src)))) + (t + (let ((size (operand-size src))) + (aver (or (eq size :qword) (eq size :word))) + (maybe-emit-operand-size-prefix segment size) + (maybe-emit-rex-for-ea segment src nil :operand-size :do-not-set) + (cond ((register-p src) + (emit-byte-with-reg segment #b01010 (reg-tn-encoding src))) + (t + (emit-byte segment #b11111111) + (emit-ea segment src #b110 t)))))))) (define-instruction pop (segment dst) (:printer reg-no-width-default-qword ((op #b01011))) @@ -1520,14 +1751,14 @@ (:printer rex-reg/mem-default-qword ((op '(#b10001111 #b000)))) (:emitter (let ((size (operand-size dst))) - (aver (not (eq size :byte))) + (aver (or (eq size :qword) (eq size :word))) (maybe-emit-operand-size-prefix segment size) - (maybe-emit-rex-for-ea segment dst nil) + (maybe-emit-rex-for-ea segment dst nil :operand-size :do-not-set) (cond ((register-p dst) - (emit-byte-with-reg segment #b01011 (reg-tn-encoding dst))) - (t - (emit-byte segment #b10001111) - (emit-ea segment dst #b000)))))) + (emit-byte-with-reg segment #b01011 (reg-tn-encoding dst))) + (t + (emit-byte segment #b10001111) + (emit-ea segment dst #b000)))))) (define-instruction xchg (segment operand1 operand2) ;; Register with accumulator. @@ -1539,27 +1770,27 @@ (let ((size (matching-operand-size operand1 operand2))) (maybe-emit-operand-size-prefix segment size) (labels ((xchg-acc-with-something (acc something) - (if (and (not (eq size :byte)) (register-p something)) - (progn - (maybe-emit-rex-for-ea segment acc something) - (emit-byte-with-reg segment - #b10010 - (reg-tn-encoding something))) - (xchg-reg-with-something acc something))) - (xchg-reg-with-something (reg something) - (maybe-emit-rex-for-ea segment something reg) - (emit-byte segment (if (eq size :byte) #b10000110 #b10000111)) - (emit-ea segment something (reg-tn-encoding reg)))) + (if (and (not (eq size :byte)) (register-p something)) + (progn + (maybe-emit-rex-for-ea segment acc something) + (emit-byte-with-reg segment + #b10010 + (reg-tn-encoding something))) + (xchg-reg-with-something acc something))) + (xchg-reg-with-something (reg something) + (maybe-emit-rex-for-ea segment something reg) + (emit-byte segment (if (eq size :byte) #b10000110 #b10000111)) + (emit-ea segment something (reg-tn-encoding reg)))) (cond ((accumulator-p operand1) - (xchg-acc-with-something operand1 operand2)) - ((accumulator-p operand2) - (xchg-acc-with-something operand2 operand1)) - ((register-p operand1) - (xchg-reg-with-something operand1 operand2)) - ((register-p operand2) - (xchg-reg-with-something operand2 operand1)) - (t - (error "bogus args to XCHG: ~S ~S" operand1 operand2))))))) + (xchg-acc-with-something operand1 operand2)) + ((accumulator-p operand2) + (xchg-acc-with-something operand2 operand1)) + ((register-p operand1) + (xchg-reg-with-something operand1 operand2)) + ((register-p operand2) + (xchg-reg-with-something operand2 operand1)) + (t + (error "bogus args to XCHG: ~S ~S" operand1 operand2))))))) (define-instruction lea (segment dst src) (:printer rex-reg-reg/mem ((op #b1000110))) @@ -1567,7 +1798,7 @@ (:emitter (aver (or (dword-reg-p dst) (qword-reg-p dst))) (maybe-emit-rex-for-ea segment src dst - :operand-size :qword) + :operand-size :qword) (emit-byte segment #b10001101) (emit-ea segment src (reg-tn-encoding dst)))) @@ -1660,43 +1891,43 @@ ;;;; arithmetic (defun emit-random-arith-inst (name segment dst src opcode - &optional allow-constants) + &optional allow-constants) (let ((size (matching-operand-size dst src))) (maybe-emit-operand-size-prefix segment size) (cond ((integerp src) (cond ((and (not (eq size :byte)) (<= -128 src 127)) - (maybe-emit-rex-for-ea segment dst nil) - (emit-byte segment #b10000011) - (emit-ea segment dst opcode allow-constants) - (emit-byte segment src)) - ((accumulator-p dst) - (maybe-emit-rex-for-ea segment dst nil) - (emit-byte segment - (dpb opcode - (byte 3 3) - (if (eq size :byte) - #b00000100 - #b00000101))) - (emit-sized-immediate segment size src)) - (t - (maybe-emit-rex-for-ea segment dst nil) - (emit-byte segment (if (eq size :byte) #b10000000 #b10000001)) - (emit-ea segment dst opcode allow-constants) - (emit-sized-immediate segment size src)))) + (maybe-emit-rex-for-ea segment dst nil) + (emit-byte segment #b10000011) + (emit-ea segment dst opcode allow-constants) + (emit-byte segment src)) + ((accumulator-p dst) + (maybe-emit-rex-for-ea segment dst nil) + (emit-byte segment + (dpb opcode + (byte 3 3) + (if (eq size :byte) + #b00000100 + #b00000101))) + (emit-sized-immediate segment size src)) + (t + (maybe-emit-rex-for-ea segment dst nil) + (emit-byte segment (if (eq size :byte) #b10000000 #b10000001)) + (emit-ea segment dst opcode allow-constants) + (emit-sized-immediate segment size src)))) ((register-p src) (maybe-emit-rex-for-ea segment dst src) (emit-byte segment - (dpb opcode - (byte 3 3) - (if (eq size :byte) #b00000000 #b00000001))) + (dpb opcode + (byte 3 3) + (if (eq size :byte) #b00000000 #b00000001))) (emit-ea segment dst (reg-tn-encoding src) allow-constants)) ((register-p dst) (maybe-emit-rex-for-ea segment src dst) (emit-byte segment - (dpb opcode - (byte 3 3) - (if (eq size :byte) #b00000010 #b00000011))) + (dpb opcode + (byte 3 3) + (if (eq size :byte) #b00000010 #b00000011))) (emit-ea segment src (reg-tn-encoding dst) allow-constants)) (t (error "bogus operands to ~A" name))))) @@ -1710,7 +1941,7 @@ ;; The redundant encoding #x82 is invalid in 64-bit mode, ;; therefore we force WIDTH to 1. (reg/mem-imm ((op (#b1000001 ,subop)) (width 1) - (imm nil :type signed-imm-byte))) + (imm nil :type signed-imm-byte))) (rex-reg/mem-imm ((op (#b1000001 ,subop)) (width 1) (imm nil :type signed-imm-byte))) (reg-reg/mem-dir ((op ,(dpb subop (byte 3 1) #b000000)))) @@ -1737,38 +1968,27 @@ (:printer-list (arith-inst-printer-list #b111)) (:emitter (emit-random-arith-inst "CMP" segment dst src #b111 t))) +;;; The one-byte encodings for INC and DEC are used as REX prefixes +;;; in 64-bit mode so we always use the two-byte form. (define-instruction inc (segment dst) - ;; Register - (:printer modrm-reg-no-width ((modrm-reg #b000))) - ;; Register/Memory - ;; (:printer rex-reg/mem ((op '(#b11111111 #b001)))) (:printer reg/mem ((op '(#b1111111 #b000)))) + (:printer rex-reg/mem ((op '(#b1111111 #b000)))) (:emitter (let ((size (operand-size dst))) (maybe-emit-operand-size-prefix segment size) - (cond #+nil ; these opcodes become REX prefixes in x86-64 - ((and (not (eq size :byte)) (register-p dst)) - (emit-byte-with-reg segment #b01000 (reg-tn-encoding dst))) - (t - (maybe-emit-rex-for-ea segment dst nil) - (emit-byte segment (if (eq size :byte) #b11111110 #b11111111)) - (emit-ea segment dst #b000)))))) + (maybe-emit-rex-for-ea segment dst nil) + (emit-byte segment (if (eq size :byte) #b11111110 #b11111111)) + (emit-ea segment dst #b000)))) (define-instruction dec (segment dst) - ;; Register. - (:printer modrm-reg-no-width ((modrm-reg #b001))) - ;; Register/Memory (:printer reg/mem ((op '(#b1111111 #b001)))) + (:printer rex-reg/mem ((op '(#b1111111 #b001)))) (:emitter (let ((size (operand-size dst))) (maybe-emit-operand-size-prefix segment size) - (cond #+nil - ((and (not (eq size :byte)) (register-p dst)) - (emit-byte-with-reg segment #b01001 (reg-tn-encoding dst))) - (t - (maybe-emit-rex-for-ea segment dst nil) - (emit-byte segment (if (eq size :byte) #b11111110 #b11111111)) - (emit-ea segment dst #b001)))))) + (maybe-emit-rex-for-ea segment dst nil) + (emit-byte segment (if (eq size :byte) #b11111110 #b11111111)) + (emit-ea segment dst #b001)))) (define-instruction neg (segment dst) (:printer reg/mem ((op '(#b1111011 #b011)))) @@ -1798,44 +2018,44 @@ (:printer rex-ext-reg-reg/mem-no-width ((op #b10101111))) (:printer reg-reg/mem ((op #b0110100) (width 1) (imm nil :type 'signed-imm-data)) - '(:name :tab reg ", " reg/mem ", " imm)) + '(:name :tab reg ", " reg/mem ", " imm)) (:printer rex-reg-reg/mem ((op #b0110100) (width 1) (imm nil :type 'signed-imm-data)) - '(:name :tab reg ", " reg/mem ", " imm)) + '(:name :tab reg ", " reg/mem ", " imm)) (:printer reg-reg/mem ((op #b0110101) (width 1) - (imm nil :type 'signed-imm-byte)) - '(:name :tab reg ", " reg/mem ", " imm)) + (imm nil :type 'signed-imm-byte)) + '(:name :tab reg ", " reg/mem ", " imm)) (:printer rex-reg-reg/mem ((op #b0110101) (width 1) (imm nil :type 'signed-imm-byte)) - '(:name :tab reg ", " reg/mem ", " imm)) + '(:name :tab reg ", " reg/mem ", " imm)) (:emitter (flet ((r/m-with-immed-to-reg (reg r/m immed) - (let* ((size (matching-operand-size reg r/m)) - (sx (and (not (eq size :byte)) (<= -128 immed 127)))) - (maybe-emit-operand-size-prefix segment size) - (maybe-emit-rex-for-ea segment r/m reg) - (emit-byte segment (if sx #b01101011 #b01101001)) - (emit-ea segment r/m (reg-tn-encoding reg)) - (if sx - (emit-byte segment immed) - (emit-sized-immediate segment size immed))))) + (let* ((size (matching-operand-size reg r/m)) + (sx (and (not (eq size :byte)) (<= -128 immed 127)))) + (maybe-emit-operand-size-prefix segment size) + (maybe-emit-rex-for-ea segment r/m reg) + (emit-byte segment (if sx #b01101011 #b01101001)) + (emit-ea segment r/m (reg-tn-encoding reg)) + (if sx + (emit-byte segment immed) + (emit-sized-immediate segment size immed))))) (cond (src2 - (r/m-with-immed-to-reg dst src1 src2)) - (src1 - (if (integerp src1) - (r/m-with-immed-to-reg dst dst src1) - (let ((size (matching-operand-size dst src1))) - (maybe-emit-operand-size-prefix segment size) - (maybe-emit-rex-for-ea segment src1 dst) - (emit-byte segment #b00001111) - (emit-byte segment #b10101111) - (emit-ea segment src1 (reg-tn-encoding dst))))) - (t - (let ((size (operand-size dst))) - (maybe-emit-operand-size-prefix segment size) - (maybe-emit-rex-for-ea segment dst nil) - (emit-byte segment (if (eq size :byte) #b11110110 #b11110111)) - (emit-ea segment dst #b101))))))) + (r/m-with-immed-to-reg dst src1 src2)) + (src1 + (if (integerp src1) + (r/m-with-immed-to-reg dst dst src1) + (let ((size (matching-operand-size dst src1))) + (maybe-emit-operand-size-prefix segment size) + (maybe-emit-rex-for-ea segment src1 dst) + (emit-byte segment #b00001111) + (emit-byte segment #b10101111) + (emit-ea segment src1 (reg-tn-encoding dst))))) + (t + (let ((size (operand-size dst))) + (maybe-emit-operand-size-prefix segment size) + (maybe-emit-rex-for-ea segment dst nil) + (emit-byte segment (if (eq size :byte) #b11110110 #b11110111)) + (emit-ea segment dst #b101))))))) (define-instruction div (segment dst src) (:printer accum-reg/mem ((op '(#b1111011 #b110)))) @@ -1881,7 +2101,7 @@ (maybe-emit-operand-size-prefix segment :dword) (emit-byte segment #b10011000))) -;;; CDQE -- Convert Word To Double Word Extended. RAX <- sign_xtnd(EAX) +;;; CDQE -- Convert Double Word To Quad Word Extended. RAX <- sign_xtnd(EAX) (define-instruction cdqe (segment) (:printer rex-byte ((op #b10011000))) (:emitter @@ -1928,31 +2148,31 @@ (let ((size (operand-size dst))) (maybe-emit-operand-size-prefix segment size) (multiple-value-bind (major-opcode immed) - (case amount - (:cl (values #b11010010 nil)) - (1 (values #b11010000 nil)) - (t (values #b11000000 t))) + (case amount + (:cl (values #b11010010 nil)) + (1 (values #b11010000 nil)) + (t (values #b11000000 t))) (maybe-emit-rex-for-ea segment dst nil) (emit-byte segment - (if (eq size :byte) major-opcode (logior major-opcode 1))) + (if (eq size :byte) major-opcode (logior major-opcode 1))) (emit-ea segment dst opcode) (when immed - (emit-byte segment amount))))) + (emit-byte segment amount))))) (eval-when (:compile-toplevel :execute) (defun shift-inst-printer-list (subop) `((reg/mem ((op (#b1101000 ,subop))) - (:name :tab reg/mem ", 1")) + (:name :tab reg/mem ", 1")) (rex-reg/mem ((op (#b1101000 ,subop))) - (:name :tab reg/mem ", 1")) + (:name :tab reg/mem ", 1")) (reg/mem ((op (#b1101001 ,subop))) - (:name :tab reg/mem ", " 'cl)) + (:name :tab reg/mem ", " 'cl)) (rex-reg/mem ((op (#b1101001 ,subop))) - (:name :tab reg/mem ", " 'cl)) + (:name :tab reg/mem ", " 'cl)) (reg/mem-imm ((op (#b1100000 ,subop)) - (imm nil :type imm-byte))) + (imm nil :type imm-byte))) (rex-reg/mem-imm ((op (#b1100000 ,subop)) - (imm nil :type imm-byte)))))) + (imm nil :type imm-byte)))))) (define-instruction rol (segment dst amount) (:printer-list @@ -2004,8 +2224,8 @@ (maybe-emit-rex-for-ea segment dst src) (emit-byte segment #b00001111) (emit-byte segment (dpb opcode (byte 1 3) - (if (eq amt :cl) #b10100101 #b10100100))) - (emit-ea segment dst (reg-tn-encoding src)) + (if (eq amt :cl) #b10100101 #b10100100))) + (emit-ea segment dst (reg-tn-encoding src)) (unless (eq amt :cl) (emit-byte segment amt)))) @@ -2013,9 +2233,9 @@ (defun double-shift-inst-printer-list (op) `(#+nil (ext-reg-reg/mem-imm ((op ,(logior op #b100)) - (imm nil :type signed-imm-byte))) + (imm nil :type signed-imm-byte))) (ext-reg-reg/mem ((op ,(logior op #b101))) - (:name :tab reg/mem ", " 'cl))))) + (:name :tab reg/mem ", " 'cl))))) (define-instruction shld (segment dst src amt) (:declare (type (or (member :cl) (mod 32)) amt)) @@ -2046,31 +2266,31 @@ (let ((size (matching-operand-size this that))) (maybe-emit-operand-size-prefix segment size) (flet ((test-immed-and-something (immed something) - (cond ((accumulator-p something) - (maybe-emit-rex-for-ea segment something nil) - (emit-byte segment - (if (eq size :byte) #b10101000 #b10101001)) - (emit-sized-immediate segment size immed)) - (t - (maybe-emit-rex-for-ea segment something nil) - (emit-byte segment - (if (eq size :byte) #b11110110 #b11110111)) - (emit-ea segment something #b000) - (emit-sized-immediate segment size immed)))) - (test-reg-and-something (reg something) - (maybe-emit-rex-for-ea segment something reg) - (emit-byte segment (if (eq size :byte) #b10000100 #b10000101)) - (emit-ea segment something (reg-tn-encoding reg)))) + (cond ((accumulator-p something) + (maybe-emit-rex-for-ea segment something nil) + (emit-byte segment + (if (eq size :byte) #b10101000 #b10101001)) + (emit-sized-immediate segment size immed)) + (t + (maybe-emit-rex-for-ea segment something nil) + (emit-byte segment + (if (eq size :byte) #b11110110 #b11110111)) + (emit-ea segment something #b000) + (emit-sized-immediate segment size immed)))) + (test-reg-and-something (reg something) + (maybe-emit-rex-for-ea segment something reg) + (emit-byte segment (if (eq size :byte) #b10000100 #b10000101)) + (emit-ea segment something (reg-tn-encoding reg)))) (cond ((integerp that) - (test-immed-and-something that this)) - ((integerp this) - (test-immed-and-something this that)) - ((register-p this) - (test-reg-and-something this that)) - ((register-p that) - (test-reg-and-something that this)) - (t - (error "bogus operands for TEST: ~S and ~S" this that))))))) + (test-immed-and-something that this)) + ((integerp this) + (test-immed-and-something this that)) + ((register-p this) + (test-reg-and-something this that)) + ((register-p that) + (test-reg-and-something that this)) + (t + (error "bogus operands for TEST: ~S and ~S" this that))))))) (define-instruction or (segment dst src) (:printer-list @@ -2216,16 +2436,16 @@ (error "can't scan bytes: ~S" src)) (maybe-emit-operand-size-prefix segment size) (cond ((integerp index) - (maybe-emit-rex-for-ea segment src nil) - (emit-byte segment #b00001111) - (emit-byte segment #b10111010) - (emit-ea segment src opcode) - (emit-byte segment index)) - (t - (maybe-emit-rex-for-ea segment src index) - (emit-byte segment #b00001111) - (emit-byte segment (dpb opcode (byte 3 3) #b10000011)) - (emit-ea segment src (reg-tn-encoding index)))))) + (maybe-emit-rex-for-ea segment src nil) + (emit-byte segment #b00001111) + (emit-byte segment #b10111010) + (emit-ea segment src opcode) + (emit-byte segment index)) + (t + (maybe-emit-rex-for-ea segment src index) + (emit-byte segment #b00001111) + (emit-byte segment (dpb opcode (byte 3 3) #b10000011)) + (emit-ea segment src (reg-tn-encoding index)))))) (eval-when (:compile-toplevel :execute) (defun bit-test-inst-printer-list (subop) @@ -2267,30 +2487,28 @@ (:emitter (typecase where (label - (maybe-emit-rex-for-ea segment where nil) (emit-byte segment #b11101000) ; 32 bit relative (emit-back-patch segment - 4 - (lambda (segment posn) - (emit-dword segment - (- (label-position where) - (+ posn 4)))))) + 4 + (lambda (segment posn) + (emit-signed-dword segment + (- (label-position where) + (+ posn 4)))))) (fixup - (maybe-emit-rex-for-ea segment where nil) (emit-byte segment #b11101000) (emit-relative-fixup segment where)) (t - (maybe-emit-rex-for-ea segment where nil) + (maybe-emit-rex-for-ea segment where nil :operand-size :do-not-set) (emit-byte segment #b11111111) (emit-ea segment where #b010))))) (defun emit-byte-displacement-backpatch (segment target) (emit-back-patch segment - 1 - (lambda (segment posn) - (let ((disp (- (label-position target) (1+ posn)))) - (aver (<= -128 disp 127)) - (emit-byte segment disp))))) + 1 + (lambda (segment posn) + (let ((disp (- (label-position target) (1+ posn)))) + (aver (<= -128 disp 127)) + (emit-byte segment disp))))) (define-instruction jmp (segment cond &optional where) ;; conditional jumps @@ -2298,56 +2516,56 @@ (:printer near-cond-jump () '('j cc :tab label)) ;; unconditional jumps (:printer short-jump ((op #b1011))) - (:printer near-jump ((op #b11101001)) ) + (:printer near-jump ((op #b11101001))) (:printer reg/mem-default-qword ((op '(#b11111111 #b100)))) (:printer rex-reg/mem-default-qword ((op '(#b11111111 #b100)))) (:emitter (cond (where - (emit-chooser - segment 6 2 - (lambda (segment posn delta-if-after) - (let ((disp (- (label-position where posn delta-if-after) - (+ posn 2)))) - (when (<= -128 disp 127) - (emit-byte segment - (dpb (conditional-opcode cond) - (byte 4 0) - #b01110000)) - (emit-byte-displacement-backpatch segment where) - t))) - (lambda (segment posn) - (let ((disp (- (label-position where) (+ posn 6)))) - (emit-byte segment #b00001111) - (emit-byte segment - (dpb (conditional-opcode cond) - (byte 4 0) - #b10000000)) - (emit-dword segment disp))))) - ((label-p (setq where cond)) - (emit-chooser - segment 5 0 - (lambda (segment posn delta-if-after) - (let ((disp (- (label-position where posn delta-if-after) - (+ posn 2)))) - (when (<= -128 disp 127) - (emit-byte segment #b11101011) - (emit-byte-displacement-backpatch segment where) - t))) - (lambda (segment posn) - (let ((disp (- (label-position where) (+ posn 5)))) - (emit-byte segment #b11101001) - (emit-dword segment disp))))) - ((fixup-p where) - (emit-byte segment #b11101001) - (emit-relative-fixup segment where)) - (t - (unless (or (ea-p where) (tn-p where)) - (error "don't know what to do with ~A" where)) - ;; near jump defaults to 64 bit - ;; w-bit in rex prefix is unnecessary - (maybe-emit-rex-for-ea segment where nil :operand-size :dword) - (emit-byte segment #b11111111) - (emit-ea segment where #b100))))) + (emit-chooser + segment 6 2 + (lambda (segment posn delta-if-after) + (let ((disp (- (label-position where posn delta-if-after) + (+ posn 2)))) + (when (<= -128 disp 127) + (emit-byte segment + (dpb (conditional-opcode cond) + (byte 4 0) + #b01110000)) + (emit-byte-displacement-backpatch segment where) + t))) + (lambda (segment posn) + (let ((disp (- (label-position where) (+ posn 6)))) + (emit-byte segment #b00001111) + (emit-byte segment + (dpb (conditional-opcode cond) + (byte 4 0) + #b10000000)) + (emit-signed-dword segment disp))))) + ((label-p (setq where cond)) + (emit-chooser + segment 5 0 + (lambda (segment posn delta-if-after) + (let ((disp (- (label-position where posn delta-if-after) + (+ posn 2)))) + (when (<= -128 disp 127) + (emit-byte segment #b11101011) + (emit-byte-displacement-backpatch segment where) + t))) + (lambda (segment posn) + (let ((disp (- (label-position where) (+ posn 5)))) + (emit-byte segment #b11101001) + (emit-signed-dword segment disp))))) + ((fixup-p where) + (emit-byte segment #b11101001) + (emit-relative-fixup segment where)) + (t + (unless (or (ea-p where) (tn-p where)) + (error "don't know what to do with ~A" where)) + ;; near jump defaults to 64 bit + ;; w-bit in rex prefix is unnecessary + (maybe-emit-rex-for-ea segment where nil :operand-size :do-not-set) + (emit-byte segment #b11111111) + (emit-ea segment where #b100))))) (define-instruction jmp-short (segment label) (:emitter @@ -2357,13 +2575,13 @@ (define-instruction ret (segment &optional stack-delta) (:printer byte ((op #b11000011))) (:printer byte ((op #b11000010) (imm nil :type 'imm-word-16)) - '(:name :tab imm)) + '(:name :tab imm)) (:emitter (cond (stack-delta - (emit-byte segment #b11000010) - (emit-word segment stack-delta)) - (t - (emit-byte segment #b11000011))))) + (emit-byte segment #b11000010) + (emit-word segment stack-delta)) + (t + (emit-byte segment #b11000011))))) (define-instruction jecxz (segment target) (:printer short-jump ((op #b0011))) @@ -2374,7 +2592,7 @@ (define-instruction loop (segment target) (:printer short-jump ((op #b0010))) (:emitter - (emit-byte segment #b11100010) ; pfw this was 11100011, or jecxz!!!! + (emit-byte segment #b11100010) ; pfw this was 11100011, or jecxz!!!! (emit-byte-displacement-backpatch segment target))) (define-instruction loopz (segment target) @@ -2396,7 +2614,7 @@ (:emitter (aver (register-p dst)) (let ((size (matching-operand-size dst src))) - (aver (or (eq size :word) (eq size :dword) (eq size :qword) )) + (aver (or (eq size :word) (eq size :dword) (eq size :qword))) (maybe-emit-operand-size-prefix segment size)) (maybe-emit-rex-for-ea segment src dst) (emit-byte segment #b00001111) @@ -2417,7 +2635,7 @@ (define-instruction enter (segment disp &optional (level 0)) (:declare (type (unsigned-byte 16) disp) - (type (unsigned-byte 8) level)) + (type (unsigned-byte 8) level)) (:printer enter-format ((op #b11001000))) (:emitter (emit-byte segment #b11001000) @@ -2433,40 +2651,40 @@ (defun snarf-error-junk (sap offset &optional length-only) (let* ((length (sb!sys:sap-ref-8 sap offset)) - (vector (make-array length :element-type '(unsigned-byte 8)))) + (vector (make-array length :element-type '(unsigned-byte 8)))) (declare (type sb!sys:system-area-pointer sap) - (type (unsigned-byte 8) length) - (type (simple-array (unsigned-byte 8) (*)) vector)) + (type (unsigned-byte 8) length) + (type (simple-array (unsigned-byte 8) (*)) vector)) (cond (length-only - (values 0 (1+ length) nil nil)) - (t - (sb!kernel:copy-ub8-from-system-area sap (1+ offset) + (values 0 (1+ length) nil nil)) + (t + (sb!kernel:copy-ub8-from-system-area sap (1+ offset) vector 0 length) - (collect ((sc-offsets) - (lengths)) - (lengths 1) ; the length byte - (let* ((index 0) - (error-number (sb!c:read-var-integer vector index))) - (lengths index) - (loop - (when (>= index length) - (return)) - (let ((old-index index)) - (sc-offsets (sb!c:read-var-integer vector index)) - (lengths (- index old-index)))) - (values error-number - (1+ length) - (sc-offsets) - (lengths)))))))) + (collect ((sc-offsets) + (lengths)) + (lengths 1) ; the length byte + (let* ((index 0) + (error-number (sb!c:read-var-integer vector index))) + (lengths index) + (loop + (when (>= index length) + (return)) + (let ((old-index index)) + (sc-offsets (sb!c:read-var-integer vector index)) + (lengths (- index old-index)))) + (values error-number + (1+ length) + (sc-offsets) + (lengths)))))))) #| (defmacro break-cases (breaknum &body cases) (let ((bn-temp (gensym))) (collect ((clauses)) (dolist (case cases) - (clauses `((= ,bn-temp ,(car case)) ,@(cdr case)))) + (clauses `((= ,bn-temp ,(car case)) ,@(cdr case)))) `(let ((,bn-temp ,breaknum)) - (cond ,@(clauses)))))) + (cond ,@(clauses)))))) |# (defun break-control (chunk inst stream dstate) @@ -2491,12 +2709,16 @@ (#.halt-trap (nt "halt trap")) (#.fun-end-breakpoint-trap - (nt "function end breakpoint trap"))))) + (nt "function end breakpoint trap")) + (#.single-step-around-trap + (nt "single-step trap (around)")) + (#.single-step-before-trap + (nt "single-step trap (before)"))))) (define-instruction break (segment code) (:declare (type (unsigned-byte 8) code)) (:printer byte-imm ((op #b11001100)) '(:name :tab code) - :control #'break-control) + :control #'break-control) (:emitter (emit-byte segment #b11001100) (emit-byte segment code))) @@ -2512,21 +2734,6 @@ (emit-byte segment #b11001101) (emit-byte segment number))))) -(define-instruction into (segment) - (:printer byte ((op #b11001110))) - (:emitter - (emit-byte segment #b11001110))) - -(define-instruction bound (segment reg bounds) - (:emitter - (let ((size (matching-operand-size reg bounds))) - (when (eq size :byte) - (error "can't bounds-test bytes: ~S" reg)) - (maybe-emit-operand-size-prefix segment size) - (maybe-emit-rex-for-ea segment bounds reg) - (emit-byte segment #b01100010) - (emit-ea segment bounds (reg-tn-encoding reg))))) - (define-instruction iret (segment) (:printer byte ((op #b11001111))) (:emitter @@ -2570,14 +2777,14 @@ (defun emit-header-data (segment type) (emit-back-patch segment - n-word-bytes - (lambda (segment posn) - (emit-qword segment - (logior type - (ash (+ posn - (component-header-length)) - (- n-widetag-bits - word-shift))))))) + n-word-bytes + (lambda (segment posn) + (emit-qword segment + (logior type + (ash (+ posn + (component-header-length)) + (- n-widetag-bits + word-shift))))))) (define-instruction simple-fun-header-word (segment) (:emitter @@ -2587,994 +2794,165 @@ (:emitter (emit-header-data segment return-pc-header-widetag))) -;;;; fp instructions -;;;; -;;;; Note: We treat the single-precision and double-precision variants -;;;; as separate instructions. - -;;; Load single to st(0). -(define-instruction fld (segment source) - (:printer floating-point ((op '(#b001 #b000)))) - (:emitter - (and (not (fp-reg-tn-p source)) - (maybe-emit-rex-for-ea segment source nil)) - (emit-byte segment #b11011001) - (emit-fp-op segment source #b000))) - -;;; Load double to st(0). -(define-instruction fldd (segment source) - (:printer floating-point ((op '(#b101 #b000)))) - (:printer floating-point-fp ((op '(#b001 #b000)))) - (:emitter - (if (fp-reg-tn-p source) - (emit-byte segment #b11011001) - (progn - (maybe-emit-rex-for-ea segment source nil) - (emit-byte segment #b11011101))) - (emit-fp-op segment source #b000))) - -;;; Load long to st(0). -(define-instruction fldl (segment source) - (:printer floating-point ((op '(#b011 #b101)))) - (:emitter - (and (not (fp-reg-tn-p source)) - (maybe-emit-rex-for-ea segment source nil)) - (emit-byte segment #b11011011) - (emit-fp-op segment source #b101))) - -;;; Store single from st(0). -(define-instruction fst (segment dest) - (:printer floating-point ((op '(#b001 #b010)))) - (:emitter - (cond ((fp-reg-tn-p dest) - (emit-byte segment #b11011101) - (emit-fp-op segment dest #b010)) - (t - (maybe-emit-rex-for-ea segment dest nil) - (emit-byte segment #b11011001) - (emit-fp-op segment dest #b010))))) - -;;; Store double from st(0). -(define-instruction fstd (segment dest) - (:printer floating-point ((op '(#b101 #b010)))) - (:printer floating-point-fp ((op '(#b101 #b010)))) - (:emitter - (cond ((fp-reg-tn-p dest) - (emit-byte segment #b11011101) - (emit-fp-op segment dest #b010)) - (t - (maybe-emit-rex-for-ea segment dest nil) - (emit-byte segment #b11011101) - (emit-fp-op segment dest #b010))))) - -;;; Arithmetic ops are all done with at least one operand at top of -;;; stack. The other operand is is another register or a 32/64 bit -;;; memory loc. - -;;; dtc: I've tried to follow the Intel ASM386 conventions, but note -;;; that these conflict with the Gdb conventions for binops. To reduce -;;; the confusion I've added comments showing the mathamatical -;;; operation and the two syntaxes. By the ASM386 convention the -;;; instruction syntax is: -;;; -;;; Fop Source -;;; or Fop Destination, Source -;;; -;;; If only one operand is given then it is the source and the -;;; destination is ST(0). There are reversed forms of the fsub and -;;; fdiv instructions inducated by an 'R' suffix. -;;; -;;; The mathematical operation for the non-reverse form is always: -;;; destination = destination op source -;;; -;;; For the reversed form it is: -;;; destination = source op destination -;;; -;;; The instructions below only accept one operand at present which is -;;; usually the source. I've hack in extra instructions to implement -;;; the fops with a ST(i) destination, these have a -sti suffix and -;;; the operand is the destination with the source being ST(0). - -;;; Add single: -;;; st(0) = st(0) + memory or st(i). -(define-instruction fadd (segment source) - (:printer floating-point ((op '(#b000 #b000)))) - (:emitter - (and (not (fp-reg-tn-p source)) - (maybe-emit-rex-for-ea segment source nil)) - (emit-byte segment #b11011000) - (emit-fp-op segment source #b000))) - -;;; Add double: -;;; st(0) = st(0) + memory or st(i). -(define-instruction faddd (segment source) - (:printer floating-point ((op '(#b100 #b000)))) - (:printer floating-point-fp ((op '(#b000 #b000)))) - (:emitter - (and (not (fp-reg-tn-p source)) - (maybe-emit-rex-for-ea segment source nil)) - (if (fp-reg-tn-p source) - (emit-byte segment #b11011000) - (emit-byte segment #b11011100)) - (emit-fp-op segment source #b000))) - -;;; Add double destination st(i): -;;; st(i) = st(0) + st(i). -(define-instruction fadd-sti (segment destination) - (:printer floating-point-fp ((op '(#b100 #b000)))) - (:emitter - (aver (fp-reg-tn-p destination)) - (emit-byte segment #b11011100) - (emit-fp-op segment destination #b000))) -;;; with pop -(define-instruction faddp-sti (segment destination) - (:printer floating-point-fp ((op '(#b110 #b000)))) - (:emitter - (aver (fp-reg-tn-p destination)) - (emit-byte segment #b11011110) - (emit-fp-op segment destination #b000))) - -;;; Subtract single: -;;; st(0) = st(0) - memory or st(i). -(define-instruction fsub (segment source) - (:printer floating-point ((op '(#b000 #b100)))) - (:emitter - (and (not (fp-reg-tn-p source)) - (maybe-emit-rex-for-ea segment source nil)) - (emit-byte segment #b11011000) - (emit-fp-op segment source #b100))) - -;;; Subtract single, reverse: -;;; st(0) = memory or st(i) - st(0). -(define-instruction fsubr (segment source) - (:printer floating-point ((op '(#b000 #b101)))) - (:emitter - (and (not (fp-reg-tn-p source)) - (maybe-emit-rex-for-ea segment source nil)) - (emit-byte segment #b11011000) - (emit-fp-op segment source #b101))) - -;;; Subtract double: -;;; st(0) = st(0) - memory or st(i). -(define-instruction fsubd (segment source) - (:printer floating-point ((op '(#b100 #b100)))) - (:printer floating-point-fp ((op '(#b000 #b100)))) - (:emitter - (if (fp-reg-tn-p source) - (emit-byte segment #b11011000) - (progn - (and (not (fp-reg-tn-p source)) - (maybe-emit-rex-for-ea segment source nil)) - (emit-byte segment #b11011100))) - (emit-fp-op segment source #b100))) - -;;; Subtract double, reverse: -;;; st(0) = memory or st(i) - st(0). -(define-instruction fsubrd (segment source) - (:printer floating-point ((op '(#b100 #b101)))) - (:printer floating-point-fp ((op '(#b000 #b101)))) - (:emitter - (if (fp-reg-tn-p source) - (emit-byte segment #b11011000) - (progn - (and (not (fp-reg-tn-p source)) - (maybe-emit-rex-for-ea segment source nil)) - (emit-byte segment #b11011100))) - (emit-fp-op segment source #b101))) - -;;; Subtract double, destination st(i): -;;; st(i) = st(i) - st(0). -;;; -;;; ASM386 syntax: FSUB ST(i), ST -;;; Gdb syntax: fsubr %st,%st(i) -(define-instruction fsub-sti (segment destination) - (:printer floating-point-fp ((op '(#b100 #b101)))) - (:emitter - (aver (fp-reg-tn-p destination)) - (emit-byte segment #b11011100) - (emit-fp-op segment destination #b101))) -;;; with a pop -(define-instruction fsubp-sti (segment destination) - (:printer floating-point-fp ((op '(#b110 #b101)))) - (:emitter - (aver (fp-reg-tn-p destination)) - (emit-byte segment #b11011110) - (emit-fp-op segment destination #b101))) - -;;; Subtract double, reverse, destination st(i): -;;; st(i) = st(0) - st(i). -;;; -;;; ASM386 syntax: FSUBR ST(i), ST -;;; Gdb syntax: fsub %st,%st(i) -(define-instruction fsubr-sti (segment destination) - (:printer floating-point-fp ((op '(#b100 #b100)))) - (:emitter - (aver (fp-reg-tn-p destination)) - (emit-byte segment #b11011100) - (emit-fp-op segment destination #b100))) -;;; with a pop -(define-instruction fsubrp-sti (segment destination) - (:printer floating-point-fp ((op '(#b110 #b100)))) - (:emitter - (aver (fp-reg-tn-p destination)) - (emit-byte segment #b11011110) - (emit-fp-op segment destination #b100))) - -;;; Multiply single: -;;; st(0) = st(0) * memory or st(i). -(define-instruction fmul (segment source) - (:printer floating-point ((op '(#b000 #b001)))) - (:emitter - (and (not (fp-reg-tn-p source)) - (maybe-emit-rex-for-ea segment source nil)) - (emit-byte segment #b11011000) - (emit-fp-op segment source #b001))) - -;;; Multiply double: -;;; st(0) = st(0) * memory or st(i). -(define-instruction fmuld (segment source) - (:printer floating-point ((op '(#b100 #b001)))) - (:printer floating-point-fp ((op '(#b000 #b001)))) - (:emitter - (if (fp-reg-tn-p source) - (emit-byte segment #b11011000) - (progn - (and (not (fp-reg-tn-p source)) - (maybe-emit-rex-for-ea segment source nil)) - (emit-byte segment #b11011100))) - (emit-fp-op segment source #b001))) - -;;; Multiply double, destination st(i): -;;; st(i) = st(i) * st(0). -(define-instruction fmul-sti (segment destination) - (:printer floating-point-fp ((op '(#b100 #b001)))) - (:emitter - (aver (fp-reg-tn-p destination)) - (emit-byte segment #b11011100) - (emit-fp-op segment destination #b001))) - -;;; Divide single: -;;; st(0) = st(0) / memory or st(i). -(define-instruction fdiv (segment source) - (:printer floating-point ((op '(#b000 #b110)))) - (:emitter - (and (not (fp-reg-tn-p source)) - (maybe-emit-rex-for-ea segment source nil)) - (emit-byte segment #b11011000) - (emit-fp-op segment source #b110))) - -;;; Divide single, reverse: -;;; st(0) = memory or st(i) / st(0). -(define-instruction fdivr (segment source) - (:printer floating-point ((op '(#b000 #b111)))) - (:emitter - (and (not (fp-reg-tn-p source)) - (maybe-emit-rex-for-ea segment source nil)) - (emit-byte segment #b11011000) - (emit-fp-op segment source #b111))) - -;;; Divide double: -;;; st(0) = st(0) / memory or st(i). -(define-instruction fdivd (segment source) - (:printer floating-point ((op '(#b100 #b110)))) - (:printer floating-point-fp ((op '(#b000 #b110)))) - (:emitter - (if (fp-reg-tn-p source) - (emit-byte segment #b11011000) - (progn - (and (not (fp-reg-tn-p source)) - (maybe-emit-rex-for-ea segment source nil)) - (emit-byte segment #b11011100))) - (emit-fp-op segment source #b110))) - -;;; Divide double, reverse: -;;; st(0) = memory or st(i) / st(0). -(define-instruction fdivrd (segment source) - (:printer floating-point ((op '(#b100 #b111)))) - (:printer floating-point-fp ((op '(#b000 #b111)))) - (:emitter - (if (fp-reg-tn-p source) - (emit-byte segment #b11011000) - (progn - (and (not (fp-reg-tn-p source)) - (maybe-emit-rex-for-ea segment source nil)) - (emit-byte segment #b11011100))) - (emit-fp-op segment source #b111))) - -;;; Divide double, destination st(i): -;;; st(i) = st(i) / st(0). -;;; -;;; ASM386 syntax: FDIV ST(i), ST -;;; Gdb syntax: fdivr %st,%st(i) -(define-instruction fdiv-sti (segment destination) - (:printer floating-point-fp ((op '(#b100 #b111)))) - (:emitter - (aver (fp-reg-tn-p destination)) - (emit-byte segment #b11011100) - (emit-fp-op segment destination #b111))) - -;;; Divide double, reverse, destination st(i): -;;; st(i) = st(0) / st(i). -;;; -;;; ASM386 syntax: FDIVR ST(i), ST -;;; Gdb syntax: fdiv %st,%st(i) -(define-instruction fdivr-sti (segment destination) - (:printer floating-point-fp ((op '(#b100 #b110)))) - (:emitter - (aver (fp-reg-tn-p destination)) - (emit-byte segment #b11011100) - (emit-fp-op segment destination #b110))) - -;;; Exchange fr0 with fr(n). (There is no double precision variant.) -(define-instruction fxch (segment source) - (:printer floating-point-fp ((op '(#b001 #b001)))) - (:emitter - (unless (and (tn-p source) - (eq (sb-name (sc-sb (tn-sc source))) 'float-registers)) - (cl:break)) - (emit-byte segment #b11011001) - (emit-fp-op segment source #b001))) - -;;; Push 32-bit integer to st0. -(define-instruction fild (segment source) - (:printer floating-point ((op '(#b011 #b000)))) - (:emitter - (and (not (fp-reg-tn-p source)) - (maybe-emit-rex-for-ea segment source nil)) - (emit-byte segment #b11011011) - (emit-fp-op segment source #b000))) - -;;; Push 64-bit integer to st0. -(define-instruction fildl (segment source) - (:printer floating-point ((op '(#b111 #b101)))) - (:emitter - (and (not (fp-reg-tn-p source)) - (maybe-emit-rex-for-ea segment source nil)) - (emit-byte segment #b11011111) - (emit-fp-op segment source #b101))) - -;;; Store 32-bit integer. -(define-instruction fist (segment dest) - (:printer floating-point ((op '(#b011 #b010)))) - (:emitter - (and (not (fp-reg-tn-p dest)) - (maybe-emit-rex-for-ea segment dest nil)) - (emit-byte segment #b11011011) - (emit-fp-op segment dest #b010))) - -;;; Store and pop 32-bit integer. -(define-instruction fistp (segment dest) - (:printer floating-point ((op '(#b011 #b011)))) - (:emitter - (and (not (fp-reg-tn-p dest)) - (maybe-emit-rex-for-ea segment dest nil)) - (emit-byte segment #b11011011) - (emit-fp-op segment dest #b011))) - -;;; Store and pop 64-bit integer. -(define-instruction fistpl (segment dest) - (:printer floating-point ((op '(#b111 #b111)))) - (:emitter - (and (not (fp-reg-tn-p dest)) - (maybe-emit-rex-for-ea segment dest nil)) - (emit-byte segment #b11011111) - (emit-fp-op segment dest #b111))) - -;;; Store single from st(0) and pop. -(define-instruction fstp (segment dest) - (:printer floating-point ((op '(#b001 #b011)))) - (:emitter - (cond ((fp-reg-tn-p dest) - (emit-byte segment #b11011101) - (emit-fp-op segment dest #b011)) - (t - (maybe-emit-rex-for-ea segment dest nil) - (emit-byte segment #b11011001) - (emit-fp-op segment dest #b011))))) - -;;; Store double from st(0) and pop. -(define-instruction fstpd (segment dest) - (:printer floating-point ((op '(#b101 #b011)))) - (:printer floating-point-fp ((op '(#b101 #b011)))) - (:emitter - (cond ((fp-reg-tn-p dest) - (emit-byte segment #b11011101) - (emit-fp-op segment dest #b011)) - (t - (maybe-emit-rex-for-ea segment dest nil) - (emit-byte segment #b11011101) - (emit-fp-op segment dest #b011))))) - -;;; Store long from st(0) and pop. -(define-instruction fstpl (segment dest) - (:printer floating-point ((op '(#b011 #b111)))) - (:emitter - (and (not (fp-reg-tn-p dest)) - (maybe-emit-rex-for-ea segment dest nil)) - (emit-byte segment #b11011011) - (emit-fp-op segment dest #b111))) - -;;; Decrement stack-top pointer. -(define-instruction fdecstp (segment) - (:printer floating-point-no ((op #b10110))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11110110))) - -;;; Increment stack-top pointer. -(define-instruction fincstp (segment) - (:printer floating-point-no ((op #b10111))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11110111))) - -;;; Free fp register. -(define-instruction ffree (segment dest) - (:printer floating-point-fp ((op '(#b101 #b000)))) - (:emitter - (and (not (fp-reg-tn-p dest)) - (maybe-emit-rex-for-ea segment dest nil)) - (emit-byte segment #b11011101) - (emit-fp-op segment dest #b000))) - -(define-instruction fabs (segment) - (:printer floating-point-no ((op #b00001))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11100001))) - -(define-instruction fchs (segment) - (:printer floating-point-no ((op #b00000))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11100000))) - -(define-instruction frndint(segment) - (:printer floating-point-no ((op #b11100))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11111100))) - -;;; Initialize NPX. -(define-instruction fninit(segment) - (:printer floating-point-5 ((op #b00011))) - (:emitter - (emit-byte segment #b11011011) - (emit-byte segment #b11100011))) - -;;; Store Status Word to AX. -(define-instruction fnstsw(segment) - (:printer floating-point-st ((op #b00000))) - (:emitter - (emit-byte segment #b11011111) - (emit-byte segment #b11100000))) - -;;; Load Control Word. -;;; -;;; src must be a memory location -(define-instruction fldcw(segment src) - (:printer floating-point ((op '(#b001 #b101)))) - (:emitter - (and (not (fp-reg-tn-p src)) - (maybe-emit-rex-for-ea segment src nil)) - (emit-byte segment #b11011001) - (emit-fp-op segment src #b101))) - -;;; Store Control Word. -(define-instruction fnstcw(segment dst) - (:printer floating-point ((op '(#b001 #b111)))) - (:emitter - (and (not (fp-reg-tn-p dst)) - (maybe-emit-rex-for-ea segment dst nil)) - (emit-byte segment #b11011001) - (emit-fp-op segment dst #b111))) - -;;; Store FP Environment. -(define-instruction fstenv(segment dst) - (:printer floating-point ((op '(#b001 #b110)))) - (:emitter - (and (not (fp-reg-tn-p dst)) - (maybe-emit-rex-for-ea segment dst nil)) - (emit-byte segment #b11011001) - (emit-fp-op segment dst #b110))) - -;;; Restore FP Environment. -(define-instruction fldenv(segment src) - (:printer floating-point ((op '(#b001 #b100)))) - (:emitter - (and (not (fp-reg-tn-p src)) - (maybe-emit-rex-for-ea segment src nil)) - (emit-byte segment #b11011001) - (emit-fp-op segment src #b100))) - -;;; Save FP State. -(define-instruction fsave(segment dst) - (:printer floating-point ((op '(#b101 #b110)))) - (:emitter - (and (not (fp-reg-tn-p dst)) - (maybe-emit-rex-for-ea segment dst nil)) - (emit-byte segment #b11011101) - (emit-fp-op segment dst #b110))) - -;;; Restore FP State. -(define-instruction frstor(segment src) - (:printer floating-point ((op '(#b101 #b100)))) - (:emitter - (and (not (fp-reg-tn-p src)) - (maybe-emit-rex-for-ea segment src nil)) - (emit-byte segment #b11011101) - (emit-fp-op segment src #b100))) - -;;; Clear exceptions. -(define-instruction fnclex(segment) - (:printer floating-point-5 ((op #b00010))) - (:emitter - (emit-byte segment #b11011011) - (emit-byte segment #b11100010))) - -;;; comparison -(define-instruction fcom (segment src) - (:printer floating-point ((op '(#b000 #b010)))) - (:emitter - (and (not (fp-reg-tn-p src)) - (maybe-emit-rex-for-ea segment src nil)) - (emit-byte segment #b11011000) - (emit-fp-op segment src #b010))) - -(define-instruction fcomd (segment src) - (:printer floating-point ((op '(#b100 #b010)))) - (:printer floating-point-fp ((op '(#b000 #b010)))) - (:emitter - (if (fp-reg-tn-p src) - (emit-byte segment #b11011000) - (progn - (maybe-emit-rex-for-ea segment src nil) - (emit-byte segment #b11011100))) - (emit-fp-op segment src #b010))) - -;;; Compare ST1 to ST0, popping the stack twice. -(define-instruction fcompp (segment) - (:printer floating-point-3 ((op '(#b110 #b011001)))) - (:emitter - (emit-byte segment #b11011110) - (emit-byte segment #b11011001))) - -;;; unordered comparison -(define-instruction fucom (segment src) - (:printer floating-point-fp ((op '(#b101 #b100)))) - (:emitter - (aver (fp-reg-tn-p src)) - (emit-byte segment #b11011101) - (emit-fp-op segment src #b100))) - -(define-instruction ftst (segment) - (:printer floating-point-no ((op #b00100))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11100100))) - -;;;; 80387 specials - -(define-instruction fsqrt(segment) - (:printer floating-point-no ((op #b11010))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11111010))) - -(define-instruction fscale(segment) - (:printer floating-point-no ((op #b11101))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11111101))) - -(define-instruction fxtract(segment) - (:printer floating-point-no ((op #b10100))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11110100))) - -(define-instruction fsin(segment) - (:printer floating-point-no ((op #b11110))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11111110))) - -(define-instruction fcos(segment) - (:printer floating-point-no ((op #b11111))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11111111))) - -(define-instruction fprem1(segment) - (:printer floating-point-no ((op #b10101))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11110101))) - -(define-instruction fprem(segment) - (:printer floating-point-no ((op #b11000))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11111000))) - -(define-instruction fxam (segment) - (:printer floating-point-no ((op #b00101))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11100101))) - -;;; These do push/pop to stack and need special handling -;;; in any VOPs that use them. See the book. - -;;; st0 <- st1*log2(st0) -(define-instruction fyl2x(segment) ; pops stack - (:printer floating-point-no ((op #b10001))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11110001))) - -(define-instruction fyl2xp1(segment) - (:printer floating-point-no ((op #b11001))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11111001))) - -(define-instruction f2xm1(segment) - (:printer floating-point-no ((op #b10000))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11110000))) - -(define-instruction fptan(segment) ; st(0) <- 1; st(1) <- tan - (:printer floating-point-no ((op #b10010))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11110010))) - -(define-instruction fpatan(segment) ; POPS STACK - (:printer floating-point-no ((op #b10011))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11110011))) - -;;;; loading constants - -(define-instruction fldz(segment) - (:printer floating-point-no ((op #b01110))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11101110))) - -(define-instruction fld1(segment) - (:printer floating-point-no ((op #b01000))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11101000))) - -(define-instruction fldpi(segment) - (:printer floating-point-no ((op #b01011))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11101011))) - -(define-instruction fldl2t(segment) - (:printer floating-point-no ((op #b01001))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11101001))) - -(define-instruction fldl2e(segment) - (:printer floating-point-no ((op #b01010))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11101010))) - -(define-instruction fldlg2(segment) - (:printer floating-point-no ((op #b01100))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11101100))) - -(define-instruction fldln2(segment) - (:printer floating-point-no ((op #b01101))) - (:emitter - (emit-byte segment #b11011001) - (emit-byte segment #b11101101))) - -;; new xmm insns required by sse float -;; movsd andpd comisd comiss - -(define-instruction movsd (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (cond ((typep src 'tn) - (emit-byte segment #xf2) - (maybe-emit-rex-for-ea segment dst src) - (emit-byte segment #x0f) - (emit-byte segment #x11) - (emit-ea segment dst (reg-tn-encoding src))) - (t - (emit-byte segment #xf2) - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment #x0f) - (emit-byte segment #x10) - (emit-ea segment src (reg-tn-encoding dst)))))) - -(define-instruction movss (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (cond ((tn-p src) - (emit-byte segment #xf3) - (maybe-emit-rex-for-ea segment dst src) - (emit-byte segment #x0f) - (emit-byte segment #x11) - (emit-ea segment dst (reg-tn-encoding src))) - (t - (emit-byte segment #xf3) - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment #x0f) - (emit-byte segment #x10) - (emit-ea segment src (reg-tn-encoding dst)))))) - -(define-instruction andpd (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (emit-byte segment #x66) - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment #x0f) - (emit-byte segment #x54) - (emit-ea segment src (reg-tn-encoding dst)))) - -(define-instruction andps (segment dst src) - (:emitter - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment #x0f) - (emit-byte segment #x54) - (emit-ea segment src (reg-tn-encoding dst)))) - -(define-instruction comisd (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (emit-byte segment #x66) - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment #x0f) - (emit-byte segment #x2f) - (emit-ea segment src (reg-tn-encoding dst)))) - -(define-instruction comiss (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment #x0f) - (emit-byte segment #x2f) - (emit-ea segment src (reg-tn-encoding dst)))) - -;; movd movq xorp xord - -;; we only do the xmm version of movd -(define-instruction movd (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (cond ((fp-reg-tn-p dst) - (emit-byte segment #x66) - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment #x0f) - (emit-byte segment #x6e) - (emit-ea segment src (reg-tn-encoding dst))) - (t - (aver (fp-reg-tn-p src)) - (emit-byte segment #x66) - (maybe-emit-rex-for-ea segment dst src) - (emit-byte segment #x0f) - (emit-byte segment #x7e) - (emit-ea segment dst (reg-tn-encoding src)))))) - +;;;; Instructions required to do floating point operations using SSE + +(defun emit-sse-inst (segment dst src prefix opcode &key operand-size) + (when prefix + (emit-byte segment prefix)) + (if operand-size + (maybe-emit-rex-for-ea segment src dst :operand-size operand-size) + (maybe-emit-rex-for-ea segment src dst)) + (emit-byte segment #x0f) + (emit-byte segment opcode) + (emit-ea segment src (reg-tn-encoding dst))) + +;;; Emit an SSE instruction that has an XMM register as the destination +;;; operand and for which the size of the operands is implicitly given +;;; by the instruction. +(defun emit-regular-sse-inst (segment dst src prefix opcode) + (aver (xmm-register-p dst)) + (emit-sse-inst segment dst src prefix opcode + :operand-size :do-not-set)) + +;;; Instructions having an XMM register as the destination operand +;;; and an XMM register or a memory location as the source operand. +;;; The operand size is implicitly given by the instruction. + +(macrolet ((define-regular-sse-inst (name prefix opcode) + `(define-instruction ,name (segment dst src) + ,@(if prefix + `((:printer ext-xmm-xmm/mem + ((prefix ,prefix) (op ,opcode))) + (:printer ext-rex-xmm-xmm/mem + ((prefix ,prefix) (op ,opcode)))) + `((:printer xmm-xmm/mem ((op ,opcode))) + (:printer rex-xmm-xmm/mem ((op ,opcode))))) + (:emitter + (emit-regular-sse-inst segment dst src ,prefix ,opcode))))) + ;; logical + (define-regular-sse-inst andpd #x66 #x54) + (define-regular-sse-inst andps nil #x54) + (define-regular-sse-inst xorpd #x66 #x57) + (define-regular-sse-inst xorps nil #x57) + ;; comparison + (define-regular-sse-inst comisd #x66 #x2f) + (define-regular-sse-inst comiss nil #x2f) + ;; arithmetic + (define-regular-sse-inst addsd #xf2 #x58) + (define-regular-sse-inst addss #xf3 #x58) + (define-regular-sse-inst divsd #xf2 #x5e) + (define-regular-sse-inst divss #xf3 #x5e) + (define-regular-sse-inst mulsd #xf2 #x59) + (define-regular-sse-inst mulss #xf3 #x59) + (define-regular-sse-inst subsd #xf2 #x5c) + (define-regular-sse-inst subss #xf3 #x5c) + (define-regular-sse-inst sqrtsd #xf2 #x51) + (define-regular-sse-inst sqrtss #xf3 #x51) + ;; conversion + (define-regular-sse-inst cvtsd2ss #xf2 #x5a) + (define-regular-sse-inst cvtss2sd #xf3 #x5a) + (define-regular-sse-inst cvtdq2pd #xf3 #xe6) + (define-regular-sse-inst cvtdq2ps nil #x5b)) + +;;; MOVSD, MOVSS +(macrolet ((define-movsd/ss-sse-inst (name prefix) + `(define-instruction ,name (segment dst src) + (:printer ext-xmm-xmm/mem-dir ((prefix ,prefix) + (op #b0001000))) + (:printer ext-rex-xmm-xmm/mem-dir ((prefix ,prefix) + (op #b0001000))) + (:emitter + (cond ((xmm-register-p dst) + (emit-sse-inst segment dst src ,prefix #x10 + :operand-size :do-not-set)) + (t + (aver (xmm-register-p src)) + (emit-sse-inst segment src dst ,prefix #x11 + :operand-size :do-not-set))))))) + (define-movsd/ss-sse-inst movsd #xf2) + (define-movsd/ss-sse-inst movss #xf3)) + +;;; MOVQ (define-instruction movq (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (cond ((fp-reg-tn-p dst) - (emit-byte segment #xf3) - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment #x0f) - (emit-byte segment #x7e) - (emit-ea segment src (reg-tn-encoding dst))) - (t - (aver (fp-reg-tn-p src)) - (emit-byte segment #x66) - (maybe-emit-rex-for-ea segment dst src) - (emit-byte segment #x0f) - (emit-byte segment #xd6) - (emit-ea segment dst (reg-tn-encoding src)))))) - -(define-instruction xorpd (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (emit-byte segment #x66) - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment #x0f) - (emit-byte segment #x57) - (emit-ea segment src (reg-tn-encoding dst)))) - -(define-instruction xorps (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment #x0f) - (emit-byte segment #x57) - (emit-ea segment src (reg-tn-encoding dst)))) - -(define-instruction cvtsd2si (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (emit-byte segment #xf2) - (maybe-emit-rex-for-ea segment src dst :operand-size :qword) - (emit-byte segment #x0f) - (emit-byte segment #x2d) - (emit-ea segment src (reg-tn-encoding dst)))) - -(define-instruction cvtsd2ss (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (emit-byte segment #xf2) - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment #x0f) - (emit-byte segment #x5a) - (emit-ea segment src (reg-tn-encoding dst)))) - -(define-instruction cvtss2si (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (emit-byte segment #xf3) - (maybe-emit-rex-for-ea segment src dst :operand-size :qword) - (emit-byte segment #x0f) - (emit-byte segment #x2d) - (emit-ea segment src (reg-tn-encoding dst)))) - -(define-instruction cvtss2sd (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (emit-byte segment #xf3) - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment #x0f) - (emit-byte segment #x5a) - (emit-ea segment src (reg-tn-encoding dst)))) - -(define-instruction cvtsi2ss (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (emit-byte segment #xf3) - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment #x0f) - (emit-byte segment #x2a) - (emit-ea segment src (reg-tn-encoding dst)))) - -(define-instruction cvtsi2sd (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (emit-byte segment #xf2) - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment #x0f) - (emit-byte segment #x2a) - (emit-ea segment src (reg-tn-encoding dst)))) - -(define-instruction cvtdq2pd (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (emit-byte segment #xf3) - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment #x0f) - (emit-byte segment #xe6) - (emit-ea segment src (reg-tn-encoding dst)))) - -(define-instruction cvtdq2ps (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment #x0f) - (emit-byte segment #x5b) - (emit-ea segment src (reg-tn-encoding dst)))) - -;; CVTTSD2SI CVTTSS2SI - -(define-instruction cvttsd2si (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (emit-byte segment #xf2) - (maybe-emit-rex-for-ea segment src dst :operand-size :qword) - (emit-byte segment #x0f) - (emit-byte segment #x2c) - (emit-ea segment src (reg-tn-encoding dst)))) - -(define-instruction cvttss2si (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (emit-byte segment #xf3) - (maybe-emit-rex-for-ea segment src dst :operand-size :qword) - (emit-byte segment #x0f) - (emit-byte segment #x2c) - (emit-ea segment src (reg-tn-encoding dst)))) - -(define-instruction addsd (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (emit-byte segment #xf2) - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment #x0f) - (emit-byte segment #x58) - (emit-ea segment src (reg-tn-encoding dst)))) - -(define-instruction addss (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (emit-byte segment #xf3) - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment #x0f) - (emit-byte segment #x58) - (emit-ea segment src (reg-tn-encoding dst)))) - -(define-instruction divsd (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (emit-byte segment #xf2) - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment #x0f) - (emit-byte segment #x5e) - (emit-ea segment src (reg-tn-encoding dst)))) - -(define-instruction divss (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (emit-byte segment #xf3) - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment #x0f) - (emit-byte segment #x5e) - (emit-ea segment src (reg-tn-encoding dst)))) - -(define-instruction mulsd (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (emit-byte segment #xf2) - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment #x0f) - (emit-byte segment #x59) - (emit-ea segment src (reg-tn-encoding dst)))) - -(define-instruction mulss (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (emit-byte segment #xf3) - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment #x0f) - (emit-byte segment #x59) - (emit-ea segment src (reg-tn-encoding dst)))) - -(define-instruction subsd (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (emit-byte segment #xf2) - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment #x0f) - (emit-byte segment #x5c) - (emit-ea segment src (reg-tn-encoding dst)))) - -(define-instruction subss (segment dst src) -; (:printer reg-reg/mem ((op #x10) (width 1))) ;wrong - (:emitter - (emit-byte segment #xf3) - (maybe-emit-rex-for-ea segment src dst) - (emit-byte segment #x0f) - (emit-byte segment #x5c) - (emit-ea segment src (reg-tn-encoding dst)))) + (:printer ext-xmm-xmm/mem ((prefix #xf3) (op #x7e))) + (:printer ext-rex-xmm-xmm/mem ((prefix #xf3) (op #x7e))) + (:printer ext-xmm-xmm/mem ((prefix #x66) (op #xd6)) + '(:name :tab reg/mem ", " reg)) + (:printer ext-rex-xmm-xmm/mem ((prefix #x66) (op #xd6)) + '(:name :tab reg/mem ", " reg)) + (:emitter + (cond ((xmm-register-p dst) + (emit-sse-inst segment dst src #xf3 #x7e + :operand-size :do-not-set)) + (t + (aver (xmm-register-p src)) + (emit-sse-inst segment src dst #x66 #xd6 + :operand-size :do-not-set))))) + +;;; Instructions having an XMM register as the destination operand +;;; and a general-purpose register or a memory location as the source +;;; operand. The operand size is calculated from the source operand. + +;;; MOVD - Move a 32- or 64-bit value from a general-purpose register or +;;; a memory location to the low order 32 or 64 bits of an XMM register +;;; with zero extension or vice versa. +;;; We do not support the MMX version of this instruction. +(define-instruction movd (segment dst src) + (:printer ext-xmm-reg/mem ((prefix #x66) (op #x6e))) + (:printer ext-rex-xmm-reg/mem ((prefix #x66) (op #x6e))) + (:printer ext-xmm-reg/mem ((prefix #x66) (op #x7e)) + '(:name :tab reg/mem ", " reg)) + (:printer ext-rex-xmm-reg/mem ((prefix #x66) (op #x7e)) + '(:name :tab reg/mem ", " reg)) + (:emitter + (cond ((xmm-register-p dst) + (emit-sse-inst segment dst src #x66 #x6e)) + (t + (aver (xmm-register-p src)) + (emit-sse-inst segment src dst #x66 #x7e))))) + +(macrolet ((define-integer-source-sse-inst (name prefix opcode) + `(define-instruction ,name (segment dst src) + (:printer ext-xmm-reg/mem ((prefix ,prefix) (op ,opcode))) + (:printer ext-rex-xmm-reg/mem ((prefix ,prefix) (op ,opcode))) + (:emitter + (aver (xmm-register-p dst)) + (let ((src-size (operand-size src))) + (aver (or (eq src-size :qword) (eq src-size :dword)))) + (emit-sse-inst segment dst src ,prefix ,opcode))))) + (define-integer-source-sse-inst cvtsi2sd #xf2 #x2a) + (define-integer-source-sse-inst cvtsi2ss #xf3 #x2a)) + +;;; Instructions having a general-purpose register as the destination +;;; operand and an XMM register or a memory location as the source +;;; operand. The operand size is calculated from the destination +;;; operand. + +(macrolet ((define-gpr-destination-sse-inst (name prefix opcode) + `(define-instruction ,name (segment dst src) + (:printer ext-reg-xmm/mem ((prefix ,prefix) (op ,opcode))) + (:printer ext-rex-reg-xmm/mem ((prefix ,prefix) (op ,opcode))) + (:emitter + (aver (register-p dst)) + (let ((dst-size (operand-size dst))) + (aver (or (eq dst-size :qword) (eq dst-size :dword))) + (emit-sse-inst segment dst src ,prefix ,opcode + :operand-size dst-size)))))) + (define-gpr-destination-sse-inst cvtsd2si #xf2 #x2d) + (define-gpr-destination-sse-inst cvtss2si #xf3 #x2d) + (define-gpr-destination-sse-inst cvttsd2si #xf2 #x2c) + (define-gpr-destination-sse-inst cvttss2si #xf3 #x2c)) + +;;; Other SSE instructions (define-instruction ldmxcsr (segment src) (:emitter (emit-byte segment #x0f) (emit-byte segment #xae) (emit-ea segment src 2))) - + (define-instruction stmxcsr (segment dst) (:emitter (emit-byte segment #x0f) (emit-byte segment #xae) (emit-ea segment dst 3))) -