3 (def!constant
+backend-fasl-file-implementation
+ :ppc
)
4 (setf *backend-register-save-penalty
* 3)
5 (setf *backend-byte-order
* :big-endian
)
7 (eval-when (:compile-toplevel
:load-toplevel
:execute
)
8 ;; On Linux, the ABI specifies the page size to be 4k-64k, use the
9 ;; maximum of that range. FIXME: it'd be great if somebody would
10 ;; find out whether using exact multiples of the page size actually
11 ;; matters in the few places where that's done, or whether we could
12 ;; just use 4k everywhere.
13 (setf *backend-page-bytes
* #!+linux
65536 #!-linux
4096))
15 ;;; The size in bytes of GENCGC cards, i.e. the granularity at which
16 ;;; writes to old generations are logged. With mprotect-based write
17 ;;; barriers, this must be a multiple of the OS page size.
18 (def!constant gencgc-card-bytes
*backend-page-bytes
*)
19 ;;; The minimum size of new allocation regions. While it doesn't
20 ;;; currently make a lot of sense to have a card size lower than
21 ;;; the alloc granularity, it will, once we are smarter about finding
22 ;;; the start of objects.
23 (def!constant gencgc-alloc-granularity
0)
24 ;;; The minimum size at which we release address ranges to the OS.
25 ;;; This must be a multiple of the OS page size.
26 (def!constant gencgc-release-granularity
*backend-page-bytes
*)