-;;; nothing _seems_ to be using these addresses
-(def!constant dynamic-0-space-start #x10000000)
-(def!constant dynamic-0-space-end #x3ffff000)
-(def!constant dynamic-1-space-start #x40000000)
-(def!constant dynamic-1-space-end #x6ffff000)
+#!+linux
+(progn
+ #!+gencgc
+ (progn
+ (def!constant dynamic-space-start #x4f000000)
+ (def!constant dynamic-space-end #x7efff000))
+ #!-gencgc
+ (progn
+ (def!constant dynamic-0-space-start #x4f000000)
+ (def!constant dynamic-0-space-end #x66fff000)
+ (def!constant dynamic-1-space-start #x67000000)
+ (def!constant dynamic-1-space-end #x7efff000))
+
+ (def!constant linkage-table-space-start #x0a000000)
+ (def!constant linkage-table-space-end #x0b000000)
+ (def!constant linkage-table-entry-size 16))
+
+#!+netbsd
+(progn
+ #!+gencgc
+ (progn
+ (def!constant dynamic-space-start #x4f000000)
+ (def!constant dynamic-space-end #x7efff000))
+ #!-gencgc
+ (progn
+ (def!constant dynamic-0-space-start #x4f000000)
+ (def!constant dynamic-0-space-end #x66fff000)
+ (def!constant dynamic-1-space-start #x67000000)
+ (def!constant dynamic-1-space-end #x7efff000))
+
+ (def!constant linkage-table-space-start #x0a000000)
+ (def!constant linkage-table-space-end #x0b000000)
+ (def!constant linkage-table-entry-size 16))