1 ;;;; that part of the parms.lisp file from original CMU CL which is defined in
2 ;;;; terms of the BACKEND structure
4 ;;;; FIXME: When we break up the BACKEND structure, this might be mergeable
5 ;;;; back into the parms.lisp file.
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 ;;;; compiler constants
20 (def!constant +backend-fasl-file-implementation+ :x86-64)
22 (setf *backend-register-save-penalty* 3)
24 (setf *backend-byte-order* :little-endian)
26 ;;; KLUDGE: It would seem natural to set this by asking our C runtime
27 ;;; code for it, but mostly we need it for GENESIS, which doesn't in
28 ;;; general have our C runtime code running to ask, so instead we set
29 ;;; it by hand. -- WHN 2001-04-15
31 ;;; Actually any information that we can retrieve C-side would be
32 ;;; useless in SBCL, since it's possible for otherwise binary
33 ;;; compatible systems to return different values for getpagesize().
34 ;;; -- JES, 2007-01-06
35 (eval-when (:compile-toplevel :load-toplevel :execute)
36 (setf *backend-page-size* 4096))
38 ;;; The size in bytes of the GENCGC pages. Should be a multiple of the
39 ;;; architecture code size.
40 (def!constant gencgc-page-size 4096)