1 ;;;; the machine-specific support routines needed by the file assembler
3 ;;;; This software is part of the SBCL system. See the README file for
6 ;;;; This software is derived from the CMU CL system, which was
7 ;;;; written at Carnegie Mellon University and released into the
8 ;;;; public domain. The software is in the public domain and is
9 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
10 ;;;; files for more information.
14 (!def-vm-support-routine generate-call-sequence
(name style vop
)
17 (let ((jump (make-symbol "JUMP")))
19 `((inst lr
,jump
(make-fixup ',name
:assembly-routine
))
22 `((:temporary
(:sc any-reg
) ,jump
)))))
24 (let ((temp (make-symbol "TEMP"))
25 (jump (make-symbol "JUMP"))
26 (nfp-save (make-symbol "NFP-SAVE"))
27 (lra (make-symbol "LRA")))
29 `((let ((lra-label (gen-label))
30 (cur-nfp (current-nfp-tn ,vop
)))
32 (store-stack-tn ,nfp-save cur-nfp
))
33 (inst compute-lra-from-code
,lra code-tn lra-label
,temp
)
34 (note-next-instruction ,vop
:call-site
)
35 (inst lr
,jump
(make-fixup ',name
:assembly-routine
))
38 (emit-return-pc lra-label
)
39 (note-this-location ,vop
:single-value-return
)
40 (without-scheduling ()
43 (inst compute-code-from-lra code-tn code-tn
46 (load-stack-tn cur-nfp
,nfp-save
))))
47 `((:temporary
(:scs
(non-descriptor-reg) :from
(:eval
0) :to
(:eval
1))
49 (:temporary
(:sc descriptor-reg
:offset lra-offset
50 :from
(:eval
0) :to
(:eval
1))
52 (:temporary
(:scs
(control-stack) :offset nfp-save-offset
)
54 (:temporary
(:sc any-reg
) ,jump
)
55 (:save-p
:compute-only
)))))))
57 (!def-vm-support-routine generate-return-sequence
(style)
62 `((lisp-return (make-random-tn :kind
:normal
63 :sc
(sc-or-lose 'descriptor-reg
)
65 (make-random-tn :kind
:normal
66 :sc
(sc-or-lose 'interior-reg
)
71 (defun return-machine-address (scp)
72 (sap-int (context-lr scp
)))