-;;;; miscellaneous VM definition noise for the x86
+;;;; miscellaneous VM definition noise for the Alpha
;;;; This software is part of the SBCL system. See the README file for
;;;; more information.
;;;; files for more information.
(in-package "SB!VM")
-
-
\f
-;;;; Define the registers
+;;;; defining the registers
(eval-when (:compile-toplevel :load-toplevel :execute)
(defvar *register-names* (make-array 32 :initial-element nil)))
(define-storage-base constant :non-packed)
(define-storage-base immediate-constant :non-packed)
+;;; a handy macro so we don't have to keep changing all the numbers
+;;; whenever we insert a new storage class.
;;;
-;;; Handy macro so we don't have to keep changing all the numbers whenever
-;;; we insert a new storage class.
;;; FIXME: This macro is not needed in the runtime target.
(defmacro define-storage-classes (&rest classes)
(list* `(define-storage-class ,sc-name ,index
,@(cdr class))
`(defconstant ,constant-name ,index)
- `(export ',constant-name)
+ ;; (The CMU CL version of this macro did
+ ;; `(EXPORT ',CONSTANT-NAME)
+ ;; here, but in SBCL we try to have package
+ ;; structure described statically in one
+ ;; master source file, instead of building it
+ ;; dynamically by letting all the system code
+ ;; modify it as the system boots.)
forms)))
(index 0 (1+ index))
(classes classes (cdr classes)))
;;; and seems to be working so far -dan
(defconstant sb!vm::kludge-nondeterministic-catch-block-size 7)
-
(define-storage-classes
;; Non-immediate contstants in the constant pool
;; A catch or unwind block.
(catch-block control-stack
:element-size sb!vm::kludge-nondeterministic-catch-block-size))
-
\f
-;;;; Make some random tns for important registers.
-
+;;; Make some random tns for important registers.
(macrolet ((defregtn (name sc)
(let ((offset-sym (symbolicate name "-OFFSET"))
(tn-sym (symbolicate name "-TN")))
(defregtn ocfp any-reg)
(defregtn lip interior-reg))
-;; And some floating point values.
+;; and some floating point values..
(defparameter fp-single-zero-tn
(make-random-tn :kind :normal
:sc (sc-or-lose 'single-reg)
(make-random-tn :kind :normal
:sc (sc-or-lose 'double-reg)
:offset 31))
-
\f
-;;; Immediate-Constant-SC -- Interface
-;;;
-;;; If value can be represented as an immediate constant, then return the
-;;; appropriate SC number, otherwise return NIL.
-;;;
+;;; If value can be represented as an immediate constant, then return
+;;; the appropriate SC number, otherwise return NIL.
(!def-vm-support-routine immediate-constant-sc (value)
(typecase value
((integer 0 0)
(sc-number-or-lose 'fp-double-zero )
nil))))
\f
-;;;; Function Call Parameters
+;;;; function call parameters
-;;; The SC numbers for register and stack arguments/return values.
-;;;
+;;; the SC numbers for register and stack arguments/return values
(defconstant register-arg-scn (meta-sc-number-or-lose 'descriptor-reg))
(defconstant immediate-arg-scn (meta-sc-number-or-lose 'any-reg))
(defconstant control-stack-arg-scn (meta-sc-number-or-lose 'control-stack))
(eval-when (:compile-toplevel :load-toplevel :execute)
-;;; Offsets of special stack frame locations
+;;; offsets of special stack frame locations
(defconstant ocfp-save-offset 0)
(defconstant lra-save-offset 1)
(defconstant nfp-save-offset 2)
-;;; The number of arguments/return values passed in registers.
-;;;
+;;; the number of arguments/return values passed in registers
(defconstant register-arg-count 6)
-;;; Names to use for the argument registers.
-;;;
-
-
-); Eval-When (Compile Load Eval)
+;;; (Names to use for the argument registers would go here, but there
+;;; are none.)
+); EVAL-WHEN
-;;; A list of TN's describing the register arguments.
-;;;
+;;; a list of TN's describing the register arguments
(defparameter *register-arg-tns*
(mapcar #'(lambda (n)
(make-random-tn :kind :normal
:offset n))
*register-arg-offsets*))
-;;; SINGLE-VALUE-RETURN-BYTE-OFFSET
-;;;
;;; This is used by the debugger.
-;;;
-(export 'single-value-return-byte-offset)
(defconstant single-value-return-byte-offset 4)
-
\f
-;;; LOCATION-PRINT-NAME -- Interface
-;;;
-;;; This function is called by debug output routines that want a pretty name
-;;; for a TN's location. It returns a thing that can be printed with PRINC.
-;;;
+;;; This function is called by debug output routines that want a
+;;; pretty name for a TN's location. It returns a thing that can be
+;;; printed with PRINC.
(!def-vm-support-routine location-print-name (tn)
; (declare (type tn tn))
(let ((sb (sb-name (sc-sb (tn-sc tn))))