X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fx86%2Fbackend-parms.lisp;h=3f8cf62bd85dcc160c2ae318c8be770c7110fccf;hb=95591ed483dbb8c0846c129953acac1554f28809;hp=44e063414dbe1dc9d467a9f67d2fc3bf832b817f;hpb=8731c1a7c1a585d190151fa881050fb5e14c0616;p=sbcl.git

diff --git a/src/compiler/x86/backend-parms.lisp b/src/compiler/x86/backend-parms.lisp
index 44e0634..3f8cf62 100644
--- a/src/compiler/x86/backend-parms.lisp
+++ b/src/compiler/x86/backend-parms.lisp
@@ -27,7 +27,13 @@
 ;;; code for it, but mostly we need it for GENESIS, which doesn't in
 ;;; general have our C runtime code running to ask, so instead we set
 ;;; it by hand. -- WHN 2001-04-15
-(setf *backend-page-size* 4096)
+;;;
+;;; Actually any information that we can retrieve C-side would be
+;;; useless in SBCL, since it's possible for otherwise binary
+;;; compatible systems to return different values for getpagesize().
+;;; -- JES, 2007-01-06
+(eval-when (:compile-toplevel :load-toplevel :execute)
+  (setf *backend-page-bytes* 4096))
 ;;; comment from CMU CL:
 ;;;
 ;;;   in case we ever wanted to do this for Windows NT..
@@ -37,4 +43,8 @@
 ;;;   page size is 512, but that doesn't do us a whole lot of good.
 ;;;   Effectively, the page size is 64K.
 ;;;
-;;;   would be: (setf *backend-page-size* 65536)
+;;;   would be: (setf *backend-page-bytes* 65536)
+
+;;; The size in bytes of the GENCGC pages. Should be a multiple of the
+;;; architecture code size.
+(def!constant gencgc-page-bytes *backend-page-bytes*)