;;; the number of bits per word, where a word holds one lisp descriptor
(def!constant n-word-bits 32)
+;;; the natural width of a machine word (as seen in e.g. register width,
+;;; address space)
+(def!constant n-machine-word-bits 32)
+
;;; the number of bits per byte, where a byte is the smallest
;;; addressable object
(def!constant n-byte-bits 8)
-;;; the number of bits to shift between word addresses and byte addresses
-(def!constant word-shift (1- (integer-length (/ n-word-bits n-byte-bits))))
-
-;;; the number of bytes in a word
-(def!constant n-word-bytes (/ n-word-bits n-byte-bits))
-
(def!constant float-sign-shift 31)
;;; comment from CMU CL:
(def!constant float-round-to-positive 2)
(def!constant float-round-to-zero 3)
+(def!constant float-precision-24-bit 0)
+(def!constant float-precision-53-bit 2)
+(def!constant float-precision-64-bit 3)
+
(defconstant-eqx float-rounding-mode (byte 2 10) #'equalp)
(defconstant-eqx float-sticky-bits (byte 6 16) #'equalp)
(defconstant-eqx float-traps-byte (byte 6 0) #'equalp)
;;; use. (They want to use this address range even if we try to
;;; reserve it with a call to validate() as the first operation in
;;; main().)
+;;; * For NetBSD 2.0, the following ranges are used by normal
+;;; executables and mmap:
+;;; ** Executables are (by default) loaded at 0x08048000.
+;;; ** The break for the sbcl runtime seems to end around 0x08400000
+;;; We set read only space around 0x20000000, static
+;;; space around 0x30000000, all ending below 0x37fff000
+;;; ** ld.so and other mmap'ed stuff like shared libs start around
+;;; 0x48000000
+;;; We set dynamic space between 0x60000000 and 0x98000000
+;;; ** Bottom of the stack is typically not below 0xb0000000
+;;; FYI, this can be looked at with the "pmap" program, and if you
+;;; set the top-down mmap allocation option in the kernel (not yet
+;;; the default), all bets are totally off!
#!+linux
(progn
(def!constant static-space-end #x07fff000)
(def!constant dynamic-space-start #x09000000)
- (def!constant dynamic-space-end #x29000000)
-
- (def!constant alternate-signal-stack-start #x58000000))
+ (def!constant dynamic-space-end #x29000000))
-#!+bsd
+#!+(or freebsd openbsd)
(progn
- (def!constant read-only-space-start #x10000000)
- (def!constant read-only-space-end #x1ffff000)
+ (def!constant read-only-space-start
+ #!+freebsd #x10000000
+ #!+openbsd #x40000000)
+ (def!constant read-only-space-end
+ #!+freebsd #x1ffff000
+ #!+openbsd #x47fff000)
(def!constant static-space-start
#!+freebsd #x30000000
- #!+openbsd #x28000000)
- (def!constant static-space-end #x37fff000)
+ #!+openbsd #x50000000)
+ (def!constant static-space-end
+ #!+freebsd #x37fff000
+ #!+openbsd #x5ffff000)
(def!constant dynamic-space-start
- #!+freebsd #x48000000
- #!+openbsd #x50000000)
- (def!constant dynamic-space-end #x88000000)
- (def!constant alternate-signal-stack-start
- #!+freebsd #x44000000
- #!+openbsd #x4c000000))
+ #!+freebsd #x48000000
+ #!+openbsd #x80000000)
+ (def!constant dynamic-space-end
+ #!+freebsd #x88000000
+ #!+openbsd #xA0000000))
+
+#!+netbsd
+(progn
+ (def!constant read-only-space-start #x20000000)
+ (def!constant read-only-space-end #x2ffff000)
+
+ (def!constant static-space-start #x30000000)
+ (def!constant static-space-end #x37fff000)
-;;; don't need alternate-signal-stack-end : it's -start+SIGSTKSZ
+ (def!constant dynamic-space-start #x60000000)
+ (def!constant dynamic-space-end #x98000000))
;;; Given that NIL is the first thing allocated in static space, we
;; functions that the C code needs to call. When adding to this list,
;; also add a `frob' form in genesis.lisp finish-symbols.
- maybe-gc
+ sub-gc
sb!kernel::internal-error
sb!kernel::control-stack-exhausted-error
sb!di::handle-breakpoint
fdefinition-object
+ #!+sb-thread sb!thread::handle-thread-exit
;; free pointers
;;
*free-interrupt-context-index*
*free-tls-index*
- sb!thread::*foreground-thread-stack*
*allocation-pointer*
*binding-stack-pointer*
*binding-stack-start*
*control-stack-start*
+ *control-stack-end*
;; the floating point constants
*fp-constant-0d0*
projects / sbcl.git / blobdiff