1 ;;;; the extra code necessary to feed an entire file of assembly code
4 ;;;; This software is part of the SBCL system. See the README file for
7 ;;;; This software is derived from the CMU CL system, which was
8 ;;;; written at Carnegie Mellon University and released into the
9 ;;;; public domain. The software is in the public domain and is
10 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
11 ;;;; files for more information.
15 ;;; If non-NIL, emit assembly code. If NIL, emit VOP templates.
16 (defvar *emit-assembly-code-not-vops-p* nil)
18 ;;; a list of (NAME . LABEL) for every entry point
19 (defvar *entry-points* nil)
21 ;;; Set this to NIL to inhibit assembly-level optimization. (For
22 ;;; compiler debugging, rather than policy control.)
23 (defvar *assembly-optimize* t)
25 ;;; Note: You might think from the name that this would act like
26 ;;; COMPILE-FILE, but in fact it's arguably more like LOAD, even down
27 ;;; to the return convention. It LOADs a file, then writes out any
28 ;;; assembly code created by the process.
29 (defun assemble-file (name
31 (output-file (make-pathname :defaults name
33 ;; FIXME: Consider nuking the filename defaulting logic here.
34 (let* ((*emit-assembly-code-not-vops-p* t)
35 (name (pathname name))
36 ;; the fasl file currently being output to
37 (lap-fasl-output (open-fasl-output (pathname output-file) name))
42 (*assembly-optimize* nil)
45 (let ((*features* (cons :sb-assembling *features*)))
47 (load (merge-pathnames name (make-pathname :type "lisp")))
48 (fasl-dump-cold-load-form `(in-package ,(package-name
51 (sb!assem:append-segment *code-segment* *elsewhere*)
52 (setf *elsewhere* nil)
53 (let ((length (sb!assem:finalize-segment *code-segment*)))
54 (dump-assembler-routines *code-segment*
60 (close-fasl-output lap-fasl-output (not won)))
63 (defstruct (reg-spec (:copier nil))
64 (kind :temp :type (member :arg :temp :res))
65 (name nil :type symbol)
66 (temp nil :type symbol)
67 (scs nil :type (or list symbol))
69 (def!method print-object ((spec reg-spec) stream)
70 (print-unreadable-object (spec stream :type t)
72 ":KIND ~S :NAME ~S :SCS ~S :OFFSET ~S"
76 (reg-spec-offset spec))))
78 (defun reg-spec-sc (spec)
79 (if (atom (reg-spec-scs spec))
81 (car (reg-spec-scs spec))))
83 (defun parse-reg-spec (kind name sc offset)
84 (let ((reg (make-reg-spec :kind kind :name name :scs sc :offset offset)))
88 (setf (reg-spec-temp reg) (make-symbol (symbol-name name)))))
91 (defun emit-assemble (name options regs code)
94 (if (and (consp code) (consp (car code)) (eq (caar code) 'declare))
97 `(let ,(mapcar (lambda (reg)
98 `(,(reg-spec-name reg)
101 :sc (sc-or-lose ',(reg-spec-sc reg))
102 :offset ,(reg-spec-offset reg))))
105 (sb!assem:assemble (*code-segment* ',name)
107 (push (cons ',name ,name) *entry-points*)
109 ,@(generate-return-sequence
110 (or (cadr (assoc :return-style options)) :raw)))
111 (when sb!xc:*compile-print*
112 (format *error-output* "~S assembled~%" ',name)))))
114 (defun arg-or-res-spec (reg)
115 `(,(reg-spec-name reg)
116 :scs ,(if (atom (reg-spec-scs reg))
117 (list (reg-spec-scs reg))
119 ,@(unless (eq (reg-spec-kind reg) :res)
120 `(:target ,(reg-spec-temp reg)))))
122 (defun emit-vop (name options vars)
123 (let* ((args (remove :arg vars :key #'reg-spec-kind :test #'neq))
124 (temps (remove :temp vars :key #'reg-spec-kind :test #'neq))
125 (results (remove :res vars :key #'reg-spec-kind :test #'neq))
126 (return-style (or (cadr (assoc :return-style options)) :raw))
127 (cost (or (cadr (assoc :cost options)) 247))
128 (vop (make-symbol "VOP")))
129 (unless (member return-style '(:raw :full-call :none))
130 (error "unknown return-style for ~S: ~S" name return-style))
132 (call-sequence call-temps)
133 (generate-call-sequence name return-style vop)
134 `(define-vop ,(if (atom name) (list name) name)
135 (:args ,@(mapcar #'arg-or-res-spec args))
137 (mapcar (lambda (arg)
138 `(:temporary (:sc ,(reg-spec-sc arg)
139 :offset ,(reg-spec-offset arg)
140 :from (:argument ,(incf index))
142 ,(reg-spec-temp arg)))
144 ,@(mapcar (lambda (temp)
145 `(:temporary (:sc ,(reg-spec-sc temp)
146 :offset ,(reg-spec-offset temp)
149 ,(reg-spec-name temp)))
154 (mapcar (lambda (res)
155 `(:temporary (:sc ,(reg-spec-sc res)
156 :offset ,(reg-spec-offset res)
158 :to (:result ,(incf index))
159 :target ,(reg-spec-name res))
160 ,(reg-spec-temp res)))
162 (:results ,@(mapcar #'arg-or-res-spec results))
163 (:ignore ,@(mapcar #'reg-spec-name temps)
166 (remove :ignore call-temps
167 :test #'neq :key #'car))))
168 ,@(remove-if (lambda (x)
169 (member x '(:return-style :cost)))
173 ,@(mapcar (lambda (arg)
174 #!+(or hppa alpha) `(move ,(reg-spec-name arg)
175 ,(reg-spec-temp arg))
176 #!-(or hppa alpha) `(move ,(reg-spec-temp arg)
177 ,(reg-spec-name arg)))
180 ,@(mapcar (lambda (res)
181 #!+(or hppa alpha) `(move ,(reg-spec-temp res)
182 ,(reg-spec-name res))
183 #!-(or hppa alpha) `(move ,(reg-spec-name res)
184 ,(reg-spec-temp res)))
187 (def!macro define-assembly-routine (name&options vars &body code)
188 (multiple-value-bind (name options)
189 (if (atom name&options)
190 (values name&options nil)
191 (values (car name&options)
193 (let ((regs (mapcar (lambda (var) (apply #'parse-reg-spec var)) vars)))
194 (if *emit-assembly-code-not-vops-p*
195 (emit-assemble name options regs code)
196 (emit-vop name options regs)))))