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 ((temp (make-symbol "TEMP"))
18 (lip (make-symbol "LIP")))
20 `((inst jali ,lip ,temp (make-fixup ',name :assembly-routine))
22 `((:temporary (:scs (non-descriptor-reg) :from (:eval 0) :to (:eval 1))
24 (:temporary (:scs (interior-reg) :from (:eval 0) :to (:eval 1))
27 (let ((temp (make-symbol "TEMP"))
28 (nfp-save (make-symbol "NFP-SAVE"))
29 (lra (make-symbol "LRA")))
31 `((let ((lra-label (gen-label))
32 (cur-nfp (current-nfp-tn ,vop)))
34 (store-stack-tn ,nfp-save cur-nfp))
35 (inst compute-lra-from-code ,lra code-tn lra-label ,temp)
36 (note-next-instruction ,vop :call-site)
37 (inst ji ,temp (make-fixup ',name :assembly-routine))
39 (emit-return-pc lra-label)
40 (note-this-location ,vop :single-value-return)
41 (without-scheduling ()
44 (inst compute-code-from-lra code-tn code-tn
47 (load-stack-tn cur-nfp ,nfp-save))))
48 `((:temporary (:scs (non-descriptor-reg) :from (:eval 0) :to (:eval 1))
50 (:temporary (:sc descriptor-reg :offset lra-offset
51 :from (:eval 0) :to (:eval 1))
53 (:temporary (:scs (control-stack) :offset nfp-save-offset)
55 (:save-p :compute-only)))))))
57 (!def-vm-support-routine generate-return-sequence (style)
61 (make-random-tn :kind :normal
62 :sc (sc-or-lose 'interior-reg)
67 `((lisp-return (make-random-tn :kind :normal
68 :sc (sc-or-lose 'descriptor-reg)
73 (defun return-machine-address (scp)
74 (+ (context-register scp lip-offset) 8))