src/cold/defun-load-or-cload-xcompiler.lisp

   1 ;;;; This software is part of the SBCL system. See the README file for
   2 ;;;; more information.
   3 ;;;;
   4 ;;;; This software is derived from the CMU CL system, which was
   5 ;;;; written at Carnegie Mellon University and released into the
   6 ;;;; public domain. The software is in the public domain and is
   7 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
   8 ;;;; files for more information.
   9
  10 (in-package "SB-COLD")
  11
  12 ;;; Either load or compile-then-load the cross-compiler into the
  13 ;;; cross-compilation host Common Lisp.
  14 (defun load-or-cload-xcompiler (load-or-cload-stem)
  15
  16   ;; The running-in-the-host-Lisp Python cross-compiler defines its
  17   ;; own versions of a number of functions which should not overwrite
  18   ;; host-Lisp functions. Instead we put them in a special package.
  19   ;;
  20   ;; The common theme of the functions, macros, constants, and so
  21   ;; forth in this package is that they run in the host and affect the
  22   ;; compilation of the target.
  23   (let ((package-name "SB-XC"))
  24     (make-package package-name :use nil :nicknames nil)
  25     (dolist (name '("ARRAY-RANK-LIMIT"
  26                     "ARRAY-DIMENSION-LIMIT"
  27                     "ARRAY-TOTAL-SIZE-LIMIT"
  28                     "BUILT-IN-CLASS"
  29                     "CLASS" "CLASS-NAME" "CLASS-OF"
  30                     "COMPILE-FILE"
  31                     "COMPILE-FILE-PATHNAME"
  32                     "*COMPILE-FILE-PATHNAME*"
  33                     "*COMPILE-FILE-TRUENAME*"
  34                     "*COMPILE-PRINT*"
  35                     "*COMPILE-VERBOSE*"
  36                     "COMPILER-MACRO-FUNCTION"
  37                     "CONSTANTP"
  38                     "DEFCONSTANT"
  39                     "DEFINE-MODIFY-MACRO"
  40                     "DEFINE-SETF-EXPANDER"
  41                     "DEFMACRO" "DEFSETF" "DEFSTRUCT" "DEFTYPE"
  42                     "FBOUNDP" "FDEFINITION" "FMAKUNBOUND"
  43                     "FIND-CLASS"
  44                     "GET-SETF-EXPANSION"
  45                     "LAMBDA-LIST-KEYWORDS"
  46                     "LISP-IMPLEMENTATION-TYPE" "LISP-IMPLEMENTATION-VERSION"
  47                     "MACRO-FUNCTION"
  48                     "MACROEXPAND" "MACROEXPAND-1" "*MACROEXPAND-HOOK*"
  49                     "MAKE-LOAD-FORM"
  50                     "PACKAGE" "PACKAGEP"
  51                     "PROCLAIM"
  52                     "SPECIAL-OPERATOR-P"
  53                     "STANDARD-CLASS"
  54                     "STRUCTURE-CLASS"
  55                     "SUBTYPEP"
  56                     "TYPE-OF" "TYPEP"
  57                     "WITH-COMPILATION-UNIT"))
  58       (export (intern name package-name) package-name)))
  59
  60   ;; Build a version of Python to run in the host Common Lisp, to be
  61   ;; used only in cross-compilation.
  62   ;;
  63   ;; Note that files which are marked :ASSEM, to cause them to be
  64   ;; processed with SB!C:ASSEMBLE-FILE when we're running under the
  65   ;; cross-compiler or the target lisp, are still processed here, just
  66   ;; with the ordinary Lisp compiler, and this is intentional, in
  67   ;; order to make the compiler aware of the definitions of assembly
  68   ;; routines.
  69   (for-stems-and-flags (stem flags)
  70     (unless (find :not-host flags)
  71       (funcall load-or-cload-stem
  72                stem
  73                :ignore-failure-p (find :ignore-failure-p flags))
  74       #!+sb-show (warn-when-cl-snapshot-diff *cl-snapshot*)))
  75
  76   ;; If the cross-compilation host is SBCL itself, we can use the
  77   ;; PURIFY extension to freeze everything in place, reducing the
  78   ;; amount of work done on future GCs. In machines with limited
  79   ;; memory, this could help, by reducing the amount of memory which
  80   ;; needs to be juggled in a full GC. And it can hardly hurt, since
  81   ;; (in the ordinary build procedure anyway) essentially everything
  82   ;; which is reachable at this point will remain reachable for the
  83   ;; entire run.
  84   #+sbcl (sb-ext:purify)
  85
  86   (values))