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)
18 `((inst bla (make-fixup ',name :assembly-routine)))
21 (let ((temp (make-symbol "TEMP"))
22 (nfp-save (make-symbol "NFP-SAVE"))
23 (lra (make-symbol "LRA")))
25 `((let ((lra-label (gen-label))
26 (cur-nfp (current-nfp-tn ,vop)))
28 (store-stack-tn ,nfp-save cur-nfp))
29 (inst compute-lra-from-code ,lra code-tn lra-label ,temp)
30 (note-next-instruction ,vop :call-site)
31 (inst ba (make-fixup ',name :assembly-routine))
32 (emit-return-pc lra-label)
33 (note-this-location ,vop :single-value-return)
34 (without-scheduling ()
37 (inst compute-code-from-lra code-tn code-tn
40 (load-stack-tn cur-nfp ,nfp-save))))
41 `((:temporary (:scs (non-descriptor-reg) :from (:eval 0) :to (:eval 1))
43 (:temporary (:sc descriptor-reg :offset lra-offset
44 :from (:eval 0) :to (:eval 1))
46 (:temporary (:scs (control-stack) :offset nfp-save-offset)
48 (:save-p :compute-only)))))))
50 (!def-vm-support-routine generate-return-sequence (style)
55 `((lisp-return (make-random-tn :kind :normal
56 :sc (sc-or-lose 'descriptor-reg )
58 (make-random-tn :kind :normal
59 :sc (sc-or-lose 'interior-reg )
64 (defun return-machine-address (scp)
65 (sap-int (context-lr scp)))