;;;; Machine Architecture parameters:
(eval-when (:compile-toplevel :load-toplevel :execute)
-(defconstant n-word-bits 32
+(def!constant n-word-bits 32
#!+sb-doc
"Number of bits per word where a word holds one lisp descriptor.")
-(defconstant n-byte-bits 8
+(def!constant n-byte-bits 8
#!+sb-doc
"Number of bits per byte where a byte is the smallest addressable object.")
-(defconstant word-shift (1- (integer-length (/ n-word-bits n-byte-bits)))
+(def!constant word-shift (1- (integer-length (/ n-word-bits n-byte-bits)))
#!+sb-doc
"Number of bits to shift between word addresses and byte addresses.")
-(defconstant n-word-bytes (/ n-word-bits n-byte-bits)
+(def!constant n-word-bytes (/ n-word-bits n-byte-bits)
#!+sb-doc
"Number of bytes in a word.")
-;;; FIXME: The following three should probably be rationalized or at
-;;; least prefixed with n- where applicable
-(defconstant fixnum-tag-bits (1- n-lowtag-bits)
+(def!constant n-fixnum-tag-bits (1- n-lowtag-bits)
#!+sb-doc
"Number of tag bits used for a fixnum")
-(defconstant fixnum-tag-mask (1- (ash 1 fixnum-tag-bits))
+(def!constant fixnum-tag-mask (1- (ash 1 n-fixnum-tag-bits))
#!+sb-doc
"Mask to get the fixnum tag")
-(defconstant positive-fixnum-bits (- n-word-bits fixnum-tag-bits 1)
+(def!constant n-positive-fixnum-bits (- n-word-bits n-fixnum-tag-bits 1)
#!+sb-doc
"Maximum number of bits in a positive fixnum")
-(defconstant float-sign-shift 31)
+(def!constant float-sign-shift 31)
-(defconstant single-float-bias 126)
+(def!constant single-float-bias 126)
(defconstant-eqx single-float-exponent-byte (byte 8 23) #'equalp)
(defconstant-eqx single-float-significand-byte (byte 23 0) #'equalp)
-(defconstant single-float-normal-exponent-min 1)
-(defconstant single-float-normal-exponent-max 254)
-(defconstant single-float-hidden-bit (ash 1 23))
-(defconstant single-float-trapping-nan-bit (ash 1 22))
+(def!constant single-float-normal-exponent-min 1)
+(def!constant single-float-normal-exponent-max 254)
+(def!constant single-float-hidden-bit (ash 1 23))
+(def!constant single-float-trapping-nan-bit (ash 1 22))
-(defconstant double-float-bias 1022)
+(def!constant double-float-bias 1022)
(defconstant-eqx double-float-exponent-byte (byte 11 20) #'equalp)
(defconstant-eqx double-float-significand-byte (byte 20 0) #'equalp)
-(defconstant double-float-normal-exponent-min 1)
-(defconstant double-float-normal-exponent-max #x7FE)
-(defconstant double-float-hidden-bit (ash 1 20))
-(defconstant double-float-trapping-nan-bit (ash 1 19))
+(def!constant double-float-normal-exponent-min 1)
+(def!constant double-float-normal-exponent-max #x7FE)
+(def!constant double-float-hidden-bit (ash 1 20))
+(def!constant double-float-trapping-nan-bit (ash 1 19))
;;; CMUCL COMMENT:
;;; X These values are for the x86 80 bit format and are no doubt
;;; incorrect for the sparc.
;;; FIXME
-(defconstant long-float-bias 16382)
+(def!constant long-float-bias 16382)
(defconstant-eqx long-float-exponent-byte (byte 15 0) #'equalp)
(defconstant-eqx long-float-significand-byte (byte 31 0) #'equalp)
-(defconstant long-float-normal-exponent-min 1)
-(defconstant long-float-normal-exponent-max #x7FFE)
-(defconstant long-float-hidden-bit (ash 1 31))
-(defconstant long-float-trapping-nan-bit (ash 1 30))
+(def!constant long-float-normal-exponent-min 1)
+(def!constant long-float-normal-exponent-max #x7FFE)
+(def!constant long-float-hidden-bit (ash 1 31))
+(def!constant long-float-trapping-nan-bit (ash 1 30))
-(defconstant single-float-digits
+(def!constant single-float-digits
(+ (byte-size single-float-significand-byte) 1))
-(defconstant double-float-digits
+(def!constant double-float-digits
(+ (byte-size double-float-significand-byte) n-word-bits 1))
;;; This looks wrong - CSR
-(defconstant long-float-digits
+(def!constant long-float-digits
(+ (byte-size long-float-significand-byte) n-word-bits 1))
-(defconstant float-inexact-trap-bit (ash 1 0))
-(defconstant float-divide-by-zero-trap-bit (ash 1 1))
-(defconstant float-underflow-trap-bit (ash 1 2))
-(defconstant float-overflow-trap-bit (ash 1 3))
-(defconstant float-invalid-trap-bit (ash 1 4))
+(def!constant float-inexact-trap-bit (ash 1 0))
+(def!constant float-divide-by-zero-trap-bit (ash 1 1))
+(def!constant float-underflow-trap-bit (ash 1 2))
+(def!constant float-overflow-trap-bit (ash 1 3))
+(def!constant float-invalid-trap-bit (ash 1 4))
-(defconstant float-round-to-nearest 0)
-(defconstant float-round-to-zero 1)
-(defconstant float-round-to-positive 2)
-(defconstant float-round-to-negative 3)
+(def!constant float-round-to-nearest 0)
+(def!constant float-round-to-zero 1)
+(def!constant float-round-to-positive 2)
+(def!constant float-round-to-negative 3)
(defconstant-eqx float-rounding-mode (byte 2 30) #'equalp) ; RD
(defconstant-eqx float-sticky-bits (byte 5 5) #'equalp) ; aexc
;;; bit (EFM) is "reserved", and should always be zero. However, for
;;; sparc-V8 and sparc-V9, it appears to work, causing denormals to
;;; be truncated to 0 silently.
-(defconstant float-fast-bit (ash 1 22))
+(def!constant float-fast-bit (ash 1 22))
); eval-when
;;; slots are required by architecture for a place to spill register windows.
;;;
;;; FIXME: Where is this used?
-(defconstant number-stack-displacement
+(def!constant number-stack-displacement
(* 16 n-word-bytes))
\f
;;; Where to put the different spaces. Must match the C code!
#!+linux
(progn
- (defconstant read-only-space-start #x10000000)
- (defconstant read-only-space-end #x15000000)
+ (def!constant read-only-space-start #x10000000)
+ (def!constant read-only-space-end #x15000000)
- (defconstant static-space-start #x28000000)
- (defconstant static-space-end #x2c000000)
+ (def!constant static-space-start #x28000000)
+ (def!constant static-space-end #x2c000000)
;; From alpha/parms.lisp:
;; this is used in PURIFY as part of a sloppy check to see if a pointer
;; is in dynamic space. Chocolate brownie for the first person to fix it
;; -dan 20010502
- (defconstant dynamic-space-start #x30000000)
- (defconstant dynamic-space-end #x38000000)
+ (def!constant dynamic-space-start #x30000000)
+ (def!constant dynamic-space-end #x38000000)
- (defconstant dynamic-0-space-start #x30000000)
- (defconstant dynamic-0-space-end #x38000000)
+ (def!constant dynamic-0-space-start #x30000000)
+ (def!constant dynamic-0-space-end #x38000000)
- (defconstant dynamic-1-space-start #x40000000)
- (defconstant dynamic-1-space-end #x48000000)
+ (def!constant dynamic-1-space-start #x40000000)
+ (def!constant dynamic-1-space-end #x48000000)
- (defconstant control-stack-start #x50000000)
- (defconstant control-stack-end #x51000000)
+ (def!constant control-stack-start #x50000000)
+ (def!constant control-stack-end #x51000000)
- (defconstant binding-stack-start #x60000000)
- (defconstant binding-stack-end #x61000000))
+ (def!constant binding-stack-start #x60000000)
+ (def!constant binding-stack-end #x61000000))
-#!+solaris ; maybe someday.
+#!+sunos ; might as well start by trying the same numbers
(progn
- (defparameter target-read-only-space-start #x10000000)
- (defparameter target-static-space-start #x28000000)
- (defparameter target-dynamic-space-start #x40000000))
+ (def!constant read-only-space-start #x10000000)
+ (def!constant read-only-space-end #x15000000)
+
+ (def!constant static-space-start #x28000000)
+ (def!constant static-space-end #x2c000000)
+
+ (def!constant dynamic-space-start #x30000000)
+ (def!constant dynamic-space-end #x38000000)
+
+ (def!constant dynamic-0-space-start #x30000000)
+ (def!constant dynamic-0-space-end #x38000000)
+
+ (def!constant dynamic-1-space-start #x40000000)
+ (def!constant dynamic-1-space-end #x48000000)
+
+ (def!constant control-stack-start #x50000000)
+ (def!constant control-stack-end #x51000000)
+
+ (def!constant binding-stack-start #x60000000)
+ (def!constant binding-stack-end #x61000000))
+
\f
;;;; other random constants.
;;;; Assembler parameters:
;;; The number of bits per element in the assemblers code vector.
-;;;
(defparameter *assembly-unit-length* 8)
\f
;;;; Pseudo-atomic trap number
-;;; KLUDGE
+
+;;; KLUDGE: Linux on the SPARC doesn't seem to conform to any kind of
+;;; standards at all. So we use an explicitly undefined trap, because
+;;; that currently does the right thing. Expect this to break
+;;; eventually (but with luck, at that point we'll be able to revert
+;;; to the compliant trap number...
+;;;
+;;; KLUDGE: Maybe this should be called pseudo-atomic-magic-number,
+;;; allowing other architectures (which don't necessarily use traps
+;;; for pseudo-atomic) to propagate a magic number to C land via
+;;; sbcl.h.
#!-linux
-(defconstant pseudo-atomic-trap 16)
+(def!constant pseudo-atomic-trap #x10)
#!+linux
-(defconstant pseudo-atomic-trap #x40)
+(def!constant pseudo-atomic-trap #x40)
projects / sbcl.git / blobdiff