X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fx86%2Fparms.lisp;h=6e343256ad7bc1fef3fda32d0dc493853c5caf28;hb=0f234877047c56ca945fe54e9e77a9cc2c8141cb;hp=f55cf9c1ee7b45959f5a4c8aa08460ef1245998b;hpb=b66385e2031fc2cac17dd129df0af400beb48a22;p=sbcl.git

diff --git a/src/compiler/x86/parms.lisp b/src/compiler/x86/parms.lisp
index f55cf9c..6e34325 100644
--- a/src/compiler/x86/parms.lisp
+++ b/src/compiler/x86/parms.lisp
@@ -35,9 +35,11 @@
 ;;; addressable object
 (def!constant n-byte-bits 8)
 
-;;; The size in bytes of the GENCGC pages. Should be a multiple of the
-;;; architecture code size.
-(def!constant gencgc-page-size 4096)
+;;; The minimum immediate offset in a memory-referencing instruction.
+(def!constant minimum-immediate-offset (- (expt 2 31)))
+
+;;; The maximum immediate offset in a memory-referencing instruction.
+(def!constant maximum-immediate-offset (1- (expt 2 31)))
 
 (def!constant float-sign-shift 31)
 
@@ -242,8 +244,8 @@
 
 #!+darwin
 (progn
-  (def!constant read-only-space-start #x01000000)
-  (def!constant read-only-space-end   #x04ff8000)
+  (def!constant read-only-space-start #x04000000)
+  (def!constant read-only-space-end   #x07ff8000)
 
   (def!constant static-space-start    #x08000000)
   (def!constant static-space-end      #x097fff00)
@@ -271,8 +273,7 @@
   breakpoint
   fun-end-breakpoint
   single-step-around
-  single-step-before
-  #!+win32 context-restore) ;; HACK: The Win32 exception handling system does wrong things with this.
+  single-step-before)
 ;;; FIXME: It'd be nice to replace all the DEFENUMs with something like
 ;;;   (WITH-DEF-ENUM (:START 8)
 ;;;     (DEF-ENUM HALT-TRAP)