+;;; stomping on an address range that the dynamic libraries want to
+;;; 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!
+;;; * For FreeBSD, the requirement of user and kernel space are
+;;; getting larger, and users tend to extend them.
+;;; If MAXDSIZ is extended from 512MB to 1GB, we can't use up to
+;;; around 0x50000000.
+;;; And if KVA_PAGES is extended from 1GB to 1.5GB, we can't use
+;;; down to around 0xA0000000.
+;;; So we use 0x58000000--0x98000000 for dynamic space.
+;;; * OpenBSD address space changes for W^X as well as malloc
+;;; randomization made the old addresses unsafe. The only range
+;;; that is really safe is between the end of the text segment (it
+;;; starts at #x3C000000) and #x7C000000. However if the -Z linker
+;;; option is used then the safe range is (probably) #x00001000 to
+;;; #x48048000, with the text and data segments at #x08048000.
+
+#!+win32
+(progn
+
+ (def!constant read-only-space-start #x22000000)
+ (def!constant read-only-space-end #x220ff000)
+
+ (def!constant static-space-start #x22100000)
+ (def!constant static-space-end #x221ff000)
+
+ (def!constant dynamic-space-start #x22300000)
+ (def!constant dynamic-space-end #x42300000)
+
+ (def!constant linkage-table-space-start #x22200000)
+ (def!constant linkage-table-space-end #x222ff000))
+
+#!+linux
+(progn
+ (def!constant read-only-space-start #x01000000)
+ (def!constant read-only-space-end #x010ff000)
+
+ (def!constant static-space-start #x01100000)
+ (def!constant static-space-end #x011ff000)
+
+ (def!constant dynamic-space-start #x09000000)
+ (def!constant dynamic-space-end #x29000000)
+
+ (def!constant linkage-table-space-start #x01200000)
+ (def!constant linkage-table-space-end #x012ff000))
+
+#!+sunos
+(progn
+ (def!constant read-only-space-start #x20000000)
+ (def!constant read-only-space-end #x200ff000)
+
+ (def!constant static-space-start #x20100000)
+ (def!constant static-space-end #x201ff000)
+
+ (def!constant dynamic-space-start #x48000000)
+ (def!constant dynamic-space-end #xA0000000)
+
+ (def!constant linkage-table-space-start #x20200000)
+ (def!constant linkage-table-space-end #x202ff000))
+
+#!+freebsd
+(progn
+ (def!constant read-only-space-start #x01000000)
+ (def!constant read-only-space-end #x010ff000)
+
+ (def!constant static-space-start #x01100000)
+ (def!constant static-space-end #x011ff000)
+
+ (def!constant dynamic-space-start #x58000000)
+ (def!constant dynamic-space-end #x98000000)
+
+ (def!constant linkage-table-space-start #x01200000)
+ (def!constant linkage-table-space-end #x012ff000))
+
+#!+openbsd
+(progn
+ (def!constant read-only-space-start #x47000000)
+ (def!constant read-only-space-end #x470ff000)
+
+ (def!constant static-space-start #x47100000)
+ (def!constant static-space-end #x471ff000)
+
+ (def!constant dynamic-space-start #x48000000)
+ (def!constant dynamic-space-end #x78000000)
+
+ ;; In CMUCL: 0xB0000000->0xB1000000
+ (def!constant linkage-table-space-start #x47200000)
+ (def!constant linkage-table-space-end #x472ff000))
+
+#!+netbsd
+(progn
+ (def!constant read-only-space-start #x20000000)
+ (def!constant read-only-space-end #x200ff000)
+
+ (def!constant static-space-start #x20100000)
+ (def!constant static-space-end #x201ff000)
+
+ (def!constant dynamic-space-start #x60000000)
+ (def!constant dynamic-space-end #x98000000)
+
+ ;; In CMUCL: 0xB0000000->0xB1000000
+ (def!constant linkage-table-space-start #x20200000)
+ (def!constant linkage-table-space-end #x202ff000))
+
+
+#!+darwin
+(progn
+ (def!constant read-only-space-start #x04000000)
+ (def!constant read-only-space-end #x040ff000)
+
+ (def!constant static-space-start #x04100000)
+ (def!constant static-space-end #x041ff000)
+
+ (def!constant dynamic-space-start #x10000000)
+ (def!constant dynamic-space-end #x6ffff000)
+
+ (def!constant linkage-table-space-start #x04200000)
+ (def!constant linkage-table-space-end #x042ff000))
+
+;;; Size of one linkage-table entry in bytes.
+(def!constant linkage-table-entry-size 8)