backend-parms.lisp

开源跨平台Lisp编译器

;;;; that part of the parms.lisp file from original CMU CL which is
;;;; defined in terms of the BACKEND structure
;;;;
;;;; FIXME: Now that the BACKEND structure has been broken up, this
;;;; might be mergeable back into the parms.lisp file.

;;;; This software is part of the SBCL system. See the README file for
;;;; more information.
;;;;
;;;; This software is derived from the CMU CL system, which was
;;;; written at Carnegie Mellon University and released into the
;;;; public domain. The software is in the public domain and is
;;;; provided with absolutely no warranty. See the COPYING and CREDITS
;;;; files for more information.

(in-package "SB!VM")

;;;; compiler constants

(def!constant +backend-fasl-file-implementation+ :alpha)

(setf *backend-register-save-penalty* 3)

(setf *backend-byte-order* :little-endian)

;;; XXX the C runtime gets page size using getpagesize() - can't we
;;; look at that instead of hardcoding it here too?
(setf *backend-page-bytes* 8192)