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 ;;;; $Header$
  13
  14 ;;; Either load or compile-then-load the cross-compiler into the
  15 ;;; cross-compilation host Common Lisp.
  16 (defun load-or-cload-xcompiler (load-or-cload-stem)
  17
  18   ;; The running-in-the-host-Lisp Python cross-compiler defines its
  19   ;; own versions of a number of functions which should not overwrite
  20   ;; host-Lisp functions. Instead we put them in a special package.
  21   ;;
  22   ;; The common theme of the functions, macros, constants, and so
  23   ;; forth in this package is that they run in the host and affect the
  24   ;; compilation of the target.
  25   (let ((package-name "SB-XC"))
  26     (make-package package-name :use nil :nicknames nil)
  27     (dolist (name '("*COMPILE-FILE-PATHNAME*"
  28                     "*COMPILE-FILE-TRUENAME*"
  29                     "*COMPILE-PRINT*"
  30                     "*COMPILE-VERBOSE*"
  31                     "ARRAY-RANK-LIMIT"
  32                     "ARRAY-DIMENSION-LIMIT"
  33                     "ARRAY-TOTAL-SIZE-LIMIT"
  34                     "BUILT-IN-CLASS"
  35                     "CLASS" "CLASS-NAME" "CLASS-OF"
  36                     "COMPILE-FILE"
  37                     "COMPILE-FILE-PATHNAME"
  38                     "COMPILER-MACRO-FUNCTION"
  39                     "CONSTANTP"
  40                     "DEFCONSTANT"
  41                     "DEFINE-MODIFY-MACRO"
  42                     "DEFINE-SETF-EXPANDER"
  43                     "DEFMACRO" "DEFSETF" "DEFSTRUCT" "DEFTYPE"
  44                     "FBOUNDP" "FDEFINITION" "FMAKUNBOUND"
  45                     "FIND-CLASS"
  46                     "GET-SETF-EXPANSION"
  47                     "LAMBDA-LIST-KEYWORDS"
  48                     "LISP-IMPLEMENTATION-TYPE" "LISP-IMPLEMENTATION-VERSION"
  49                     "MACRO-FUNCTION"
  50                     "MACROEXPAND" "MACROEXPAND-1" "*MACROEXPAND-HOOK*"
  51                     "MAKE-LOAD-FORM"
  52                     "PACKAGE" "PACKAGEP"
  53                     "PROCLAIM"
  54                     "SPECIAL-OPERATOR-P"
  55                     "STANDARD-CLASS"
  56                     "STRUCTURE-CLASS"
  57                     "SUBTYPEP"
  58                     "TYPE-OF" "TYPEP"
  59                     "WITH-COMPILATION-UNIT"))
  60       (export (intern name package-name) package-name)))
  61
  62   ;; Build a version of Python to run in the host Common Lisp, to be
  63   ;; used only in cross-compilation.
  64   ;;
  65   ;; Note that files which are marked :ASSEM, to cause them to be
  66   ;; processed with SB!C:ASSEMBLE-FILE when we're running under the
  67   ;; cross-compiler or the target lisp, are still processed here, just
  68   ;; with the ordinary Lisp compiler, and this is intentional, in
  69   ;; order to make the compiler aware of the definitions of assembly
  70   ;; routines.
  71   (for-stems-and-flags (stem flags)
  72     (unless (find :not-host flags)
  73       (funcall load-or-cload-stem
  74                stem
  75                :ignore-failure-p (find :ignore-failure-p flags))
  76       #!+sb-show (warn-when-cl-snapshot-diff *cl-snapshot*)))
  77
  78   ;; If the cross-compilation host is SBCL itself, we can use the
  79   ;; PURIFY extension to freeze everything in place, reducing the
  80   ;; amount of work done on future GCs. In machines with limited
  81   ;; memory, this could help, by reducing the amount of memory which
  82   ;; needs to be juggled in a full GC. And it can hardly hurt, since
  83   ;; (in the ordinary build procedure anyway) essentially everything
  84   ;; which is reachable at this point will remain reachable for the
  85   ;; entire run.
  86   #+sbcl (sb-ext:purify)
  87
  88   (values))