1 ;;;; miscellaneous kernel-level definitions
3 ;;;; This software is part of the SBCL system. See the README file for
6 ;;;; This software is derived from the CMU CL system, which was
7 ;;;; written at Carnegie Mellon University and released into the
8 ;;;; public domain. The software is in the public domain and is
9 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
10 ;;;; files for more information.
12 (in-package "SB!KERNEL")
14 ;;; Return the 24 bits of data in the header of object X, which must
15 ;;; be an other-pointer object.
16 (defun get-header-data (x)
19 ;;; Set the 24 bits of data in the header of object X (which must be
20 ;;; an other-pointer object) to VAL.
21 (defun set-header-data (x val)
22 (set-header-data x val))
24 ;;; the length of the closure X, i.e. one more than the
25 ;;; number of variables closed over
26 (defun get-closure-length (x)
27 (get-closure-length x))
35 ;;; Return a System-Area-Pointer pointing to the data for the vector
36 ;;; X, which must be simple.
38 ;;; FIXME: So it should be SIMPLE-VECTOR-SAP, right? (or UNHAIRY-VECTOR-SAP,
39 ;;; if the meaning is (SIMPLE-ARRAY * 1) instead of SIMPLE-VECTOR)
40 ;;; (or maybe SIMPLE-VECTOR-DATA-SAP or UNHAIRY-VECTOR-DATA-SAP?)
42 (declare (type (simple-unboxed-array (*)) x))
45 ;;; Return a System-Area-Pointer pointing to the end of the binding stack.
46 (defun sb!c::binding-stack-pointer-sap ()
47 (sb!c::binding-stack-pointer-sap))
49 ;;; Return a System-Area-Pointer pointing to the next free word of the
50 ;;; current dynamic space.
51 (defun sb!c::dynamic-space-free-pointer ()
52 (sb!c::dynamic-space-free-pointer))
54 ;;; Return a System-Area-Pointer pointing to the end of the control stack.
55 (defun sb!c::control-stack-pointer-sap ()
56 (sb!c::control-stack-pointer-sap))
58 ;;; Return the header typecode for FUNCTION. Can be set with SETF.
59 (defun fun-subtype (function)
60 (fun-subtype function))
61 (defun (setf fun-subtype) (type function)
62 (setf (fun-subtype function) type))
64 ;;; Extract the arglist from the function header FUNC.
65 (defun %simple-fun-arglist (func)
66 (%simple-fun-arglist func))
68 (defun (setf %simple-fun-arglist) (new-value func)
69 (setf (%simple-fun-arglist func) new-value))
71 ;;; Extract the name from the function header FUNC.
72 (defun %simple-fun-name (func)
73 (%simple-fun-name func))
75 ;;; Extract the type from the function header FUNC.
76 (defun %simple-fun-type (func)
77 (%simple-fun-type func))
79 (defun %simple-fun-next (simple-fun)
80 (%simple-fun-next simple-fun))
82 (defun %simple-fun-self (simple-fun)
83 (%simple-fun-self simple-fun))
85 ;;; Extract the function from CLOSURE.
86 (defun %closure-fun (closure)
87 (%closure-fun closure))
89 ;;; Return the length of VECTOR. There is no reason to use this in
90 ;;; ordinary code, 'cause length (the vector foo)) is the same.
91 (defun sb!c::vector-length (vector)
92 (sb!c::vector-length vector))
94 ;;; Extract the INDEXth slot from CLOSURE.
95 (defun %closure-index-ref (closure index)
96 (%closure-index-ref closure index))
98 ;;; Allocate a unboxed, simple vector with type code TYPE, length LENGTH, and
99 ;;; WORDS words long. Note: it is your responsibility to ensure that the
100 ;;; relation between LENGTH and WORDS is correct.
101 (defun allocate-vector (type length words)
102 (allocate-vector type length words))
104 ;;; Allocate an array header with type code TYPE and rank RANK.
105 (defun make-array-header (type rank)
106 (make-array-header type rank))
108 ;;; Return a SAP pointing to the instructions part of CODE-OBJ.
109 (defun code-instructions (code-obj)
110 (code-instructions code-obj))
112 ;;; Extract the INDEXth element from the header of CODE-OBJ. Can be
114 (defun code-header-ref (code-obj index)
115 (code-header-ref code-obj index))
117 (defun code-header-set (code-obj index new)
118 (code-header-set code-obj index new))
120 (defun %raw-bits (object offset)
121 (declare (type index offset))
122 (sb!kernel:%raw-bits object offset))
124 (defun %set-raw-bits (object offset value)
125 (declare (type index offset))
126 (declare (type sb!vm:word value))
127 (setf (sb!kernel:%raw-bits object offset) value))
129 (defun %vector-raw-bits (object offset)
130 (declare (type index offset))
131 (sb!kernel:%vector-raw-bits object offset))
133 (defun %set-vector-raw-bits (object offset value)
134 (declare (type index offset))
135 (declare (type sb!vm:word value))
136 (setf (sb!kernel:%vector-raw-bits object offset) value))
138 (defun make-single-float (x) (make-single-float x))
139 (defun make-double-float (hi lo) (make-double-float hi lo))
141 (defun single-float-bits (x) (single-float-bits x))
142 (defun double-float-high-bits (x) (double-float-high-bits x))
143 (defun double-float-low-bits (x) (double-float-low-bits x))