1 ;;;; target-only stuff from CMU CL's src/compiler/x86/insts.lisp
3 ;;;; i.e. stuff which was in CMU CL's insts.lisp file, but which in
4 ;;;; the SBCL build process can't be compiled into code for the
5 ;;;; cross-compilation host
7 ;;;; This software is part of the SBCL system. See the README file for
10 ;;;; This software is derived from the CMU CL system, which was
11 ;;;; written at Carnegie Mellon University and released into the
12 ;;;; public domain. The software is in the public domain and is
13 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
14 ;;;; files for more information.
18 ;;; Prints a memory reference to STREAM. VALUE is a list of
19 ;;; (BASE-REG OFFSET INDEX-REG INDEX-SCALE), where any component may be
20 ;;; missing or nil to indicate that it's not used or has the obvious
21 ;;; default value (e.g., 1 for the index-scale). BASE-REG can be the
22 ;;; symbol RIP or a full register, INDEX-REG a full register. If WIDTH
23 ;;; is non-nil it should be one of the symbols :BYTE, :WORD, :DWORD or
24 ;;; :QWORD and a corresponding size indicator is printed first.
25 (defun print-mem-access (value width sized-p stream dstate)
26 (declare (type list value)
27 (type (member nil :byte :word :dword :qword) width)
29 (type sb!disassem:disassem-state dstate))
30 (when (and sized-p width)
32 (princ '| PTR | stream))
33 (write-char #\[ stream)
34 (let ((firstp t) (rip-p nil))
35 (macrolet ((pel ((var val) &body body)
36 ;; Print an element of the address, maybe with
37 ;; a leading separator.
41 (write-char #\+ stream))
44 (pel (base-reg (first value))
45 (cond ((eql 'rip base-reg)
47 (princ base-reg stream))
49 (print-addr-reg base-reg stream dstate))))
50 (pel (index-reg (third value))
51 (print-addr-reg index-reg stream dstate)
52 (let ((index-scale (fourth value)))
53 (when (and index-scale (not (= index-scale 1)))
54 (write-char #\* stream)
55 (princ index-scale stream))))
56 (let ((offset (second value)))
57 (when (and offset (or firstp (not (zerop offset))))
58 (unless (or firstp (minusp offset))
59 (write-char #\+ stream))
63 (let ((addr (+ offset (sb!disassem:dstate-next-addr dstate))))
66 (sb!disassem::note-code-constant-absolute
68 (sb!disassem:maybe-note-assembler-routine addr
73 (sb!disassem:princ16 offset stream)
76 (sb!disassem::note-code-constant-absolute offset dstate))
77 (sb!disassem:maybe-note-assembler-routine offset
81 (princ offset stream)))))))
82 (write-char #\] stream))