1 ;;;; FIXME: This file and host-c-call.lisp are separate from the
2 ;;;; rest of the alien source code for historical reasons: CMU CL
3 ;;;; made a distinction between the stuff in the C-CALL package and
4 ;;;; stuff in the ALIEN package. There's no obvious boundary
5 ;;;; there, though, and SBCL doesn't try to make this distinction,
6 ;;;; so it might make sense to just merge these files in with the
7 ;;;; rest of the SB-ALIEN code.
9 ;;;; This software is part of the SBCL system. See the README file for
10 ;;;; more information.
12 ;;;; This software is derived from the CMU CL system, which was
13 ;;;; written at Carnegie Mellon University and released into the
14 ;;;; public domain. The software is in the public domain and is
15 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
16 ;;;; files for more information.
18 (in-package "SB!ALIEN")
22 (define-alien-type char (integer 8))
23 (define-alien-type short (integer 16))
24 (define-alien-type int (integer 32))
25 (define-alien-type long (integer #!-alpha 32 #!+alpha 64))
27 (define-alien-type unsigned-char (unsigned 8))
28 (define-alien-type unsigned-short (unsigned 16))
29 (define-alien-type unsigned-int (unsigned 32))
30 (define-alien-type unsigned-long (unsigned #!-alpha 32 #!+alpha 64))
32 (define-alien-type float single-float)
33 (define-alien-type double double-float)
35 (define-alien-type-translator void ()
36 (parse-alien-type '(values) (sb!kernel:make-null-lexenv)))
38 (defun %naturalize-c-string (sap)
39 (declare (type system-area-pointer sap))
41 (declare (optimize (speed 3) (safety 0)))
42 (let ((length (loop for offset of-type fixnum upfrom 0
43 until (zerop (sap-ref-8 sap offset))
44 finally (return offset))))
45 (let ((result (make-string length :element-type 'base-char)))
46 (sb!kernel:copy-from-system-area sap 0
47 result (* sb!vm:vector-data-offset
49 (* length sb!vm:n-byte-bits))