(unless (= (dstate-next-offs dstate) cur-offs)
(return prefix-p))))))
-(defun handle-bogus-instruction (stream dstate)
+;;; Print enough spaces to fill the column used for instruction bytes,
+;;; assuming that N-BYTES many instruction bytes have already been
+;;; printed in it, then print an additional space as separator to the
+;;; opcode column.
+(defun pad-inst-column (stream n-bytes)
+ (declare (type stream stream)
+ (type text-width n-bytes))
+ (dotimes (i (- *disassem-inst-column-width* (* 2 n-bytes)))
+ (write-char #\space stream))
+ (write-char #\space stream))
+
+(defun handle-bogus-instruction (stream dstate prefix-len)
(let ((alignment (dstate-alignment dstate)))
(unless (null stream)
(multiple-value-bind (words bytes)
(truncate alignment sb!vm:n-word-bytes)
(when (> words 0)
- (print-inst (* words sb!vm:n-word-bytes) stream dstate))
+ (print-inst (* words sb!vm:n-word-bytes) stream dstate
+ :trailing-space nil))
(when (> bytes 0)
- (print-inst bytes stream dstate)))
- (print-bytes alignment stream dstate))
+ (print-inst bytes stream dstate :trailing-space nil)))
+ (pad-inst-column stream (+ prefix-len alignment))
+ (decf (dstate-cur-offs dstate) prefix-len)
+ (print-bytes (+ prefix-len alignment) stream dstate))
(incf (dstate-next-offs dstate) alignment)))
;;; Iterate through the instructions in SEGMENT, calling FUNCTION for
;;; each instruction, with arguments of CHUNK, STREAM, and DSTATE.
+;;; Additionally, unless STREAM is NIL, several items are output to it:
+;;; things printed from several hooks, for example labels, and instruction
+;;; bytes before FUNCTION is called, notes and a newline afterwards.
+;;; Instructions having an INST-PRINTER of NIL are treated as prefix
+;;; instructions which makes them print on the same line as the following
+;;; instruction, outputting their INST-PRINT-NAME (unless that is NIL)
+;;; before FUNCTION is called for the following instruction.
(defun map-segment-instructions (function segment dstate &optional stream)
(declare (type function function)
(type segment segment)
(let ((ispace (get-inst-space))
(prefix-p nil) ; just processed a prefix inst
- (prefix-len 0)) ; length of any prefix instruction(s)
+ (prefix-len 0) ; sum of lengths of any prefix instruction(s)
+ (prefix-print-names nil)) ; reverse list of prefixes seen
(rewind-current-segment dstate segment)
(when (>= (dstate-cur-offs dstate)
(seg-length (dstate-segment dstate)))
;; done!
+ (when (and stream (> prefix-len 0))
+ (pad-inst-column stream prefix-len)
+ (decf (dstate-cur-offs dstate) prefix-len)
+ (print-bytes prefix-len stream dstate)
+ (incf (dstate-cur-offs dstate) prefix-len))
(return))
(setf (dstate-next-offs dstate) (dstate-cur-offs dstate))
(sb!sys:without-gcing
(setf (dstate-segment-sap dstate) (funcall (seg-sap-maker segment)))
- (let ((chunk
- (sap-ref-dchunk (dstate-segment-sap dstate)
- (dstate-cur-offs dstate)
- (dstate-byte-order dstate))))
- (let ((fun-prefix-p (call-fun-hooks chunk stream dstate)))
- (if (> (dstate-next-offs dstate) (dstate-cur-offs dstate))
- (setf prefix-p fun-prefix-p)
+ (let* ((chunk
+ (sap-ref-dchunk (dstate-segment-sap dstate)
+ (dstate-cur-offs dstate)
+ (dstate-byte-order dstate)))
+ (fun-prefix-p (call-fun-hooks chunk stream dstate)))
+ (if (> (dstate-next-offs dstate) (dstate-cur-offs dstate))
+ (setf prefix-p fun-prefix-p)
(let ((inst (find-inst chunk ispace)))
(cond ((null inst)
- (handle-bogus-instruction stream dstate))
+ (handle-bogus-instruction stream dstate prefix-len)
+ (setf prefix-p nil))
(t
- (setf (dstate-inst-properties dstate) nil)
(setf (dstate-next-offs dstate)
(+ (dstate-cur-offs dstate)
(inst-length inst)))
- (let ((orig-next (dstate-next-offs dstate)))
- (print-inst (inst-length inst) stream dstate :trailing-space nil)
- (let ((prefilter (inst-prefilter inst))
- (control (inst-control inst)))
- (when prefilter
- (funcall prefilter chunk dstate))
-
- (setf prefix-p (null (inst-printer inst)))
-
- ;; print any instruction bytes recognized by the prefilter which calls read-suffix
- ;; and updates next-offs
- (when stream
- (let ((suffix-len (- (dstate-next-offs dstate) orig-next)))
- (when (plusp suffix-len)
- (print-inst suffix-len stream dstate :offset (inst-length inst) :trailing-space nil))
- (unless prefix-p
- (dotimes (i (- *disassem-inst-column-width* (* 2 (+ (inst-length inst) suffix-len prefix-len))))
- (write-char #\space stream))
- (write-char #\space stream))
-
- (setf prefix-len (+ (inst-length inst) suffix-len))))
-
- (funcall function chunk inst)
-
- (when control
- (funcall control chunk inst stream dstate))
- ))))))))))
+ (let ((orig-next (dstate-next-offs dstate))
+ (prefilter (inst-prefilter inst))
+ (control (inst-control inst)))
+ (print-inst (inst-length inst) stream dstate
+ :trailing-space nil)
+ (when prefilter
+ (funcall prefilter chunk dstate))
+
+ (setf prefix-p (null (inst-printer inst)))
+
+ (when stream
+ ;; Print any instruction bytes recognized by
+ ;; the prefilter which calls read-suffix and
+ ;; updates next-offs.
+ (let ((suffix-len (- (dstate-next-offs dstate)
+ orig-next)))
+ (when (plusp suffix-len)
+ (print-inst suffix-len stream dstate
+ :offset (inst-length inst)
+ :trailing-space nil))
+ ;; Keep track of the number of bytes
+ ;; printed so far.
+ (incf prefix-len (+ (inst-length inst)
+ suffix-len)))
+ (if prefix-p
+ (let ((name (inst-print-name inst)))
+ (when name
+ (push name prefix-print-names)))
+ (progn
+ ;; PREFIX-LEN includes the length of the
+ ;; current (non-prefix) instruction here.
+ (pad-inst-column stream prefix-len)
+ (dolist (name (reverse prefix-print-names))
+ (princ name stream)
+ (write-char #\space stream)))))
+
+ (funcall function chunk inst)
+
+ (when control
+ (funcall control chunk inst stream dstate))))))))))
(setf (dstate-cur-offs dstate) (dstate-next-offs dstate))
- (unless (null stream)
+ (when stream
(unless prefix-p
- (setf prefix-len 0)
+ (setf prefix-len 0
+ prefix-print-names nil)
(print-notes-and-newline stream dstate))
- (setf (dstate-output-state dstate) nil)))))
+ (setf (dstate-output-state dstate) nil))
+ (unless prefix-p
+ (setf (dstate-inst-properties dstate) nil)))))
+
\f
;;; Make an initial non-printing disassembly pass through DSTATE,
;;; noting any addresses that are referenced by instructions in this
(dotimes (offs num)
(format stream "~2,'0x" (sb!sys:sap-ref-8 sap (+ offs start-offs))))
(when trailing-space
- (dotimes (i (- *disassem-inst-column-width* (* 2 num)))
- (write-char #\space stream))
- (write-char #\space stream))))
+ (pad-inst-column stream num))))
;;; Disassemble NUM bytes to STREAM as simple `BYTE' instructions.
(defun print-bytes (num stream dstate)
projects / sbcl.git / blobdiff