;;; the number of bits per word, where a word holds one lisp descriptor
(def!constant n-word-bits 32)
+;;; the natural width of a machine word (as seen in e.g. register width,
+;;; address space)
+(def!constant n-machine-word-bits 32)
+
;;; the number of bits per byte, where a byte is the smallest
;;; addressable object
(def!constant n-byte-bits 8)
-;;; the number of bits to shift between word addresses and byte addresses
-(def!constant word-shift (1- (integer-length (/ n-word-bits n-byte-bits))))
+;;; The minimum immediate offset in a memory-referencing instruction.
+(def!constant minimum-immediate-offset (- (expt 2 31)))
-;;; the number of bytes in a word
-(def!constant n-word-bytes (/ n-word-bits n-byte-bits))
+;;; The maximum immediate offset in a memory-referencing instruction.
+(def!constant maximum-immediate-offset (1- (expt 2 31)))
(def!constant float-sign-shift 31)
;;; These values were taken from the alpha code. The values for
;;; bias and exponent min/max are not the same as shown in the 486 book.
;;; They may be correct for how Python uses them.
-(def!constant single-float-bias 126) ; Intel says 127.
+(def!constant single-float-bias 126) ; Intel says 127.
(defconstant-eqx single-float-exponent-byte (byte 8 23) #'equalp)
(defconstant-eqx single-float-significand-byte (byte 23 0) #'equalp)
;;; comment from CMU CL:
(defconstant-eqx long-float-significand-byte (byte 31 0) #'equalp)
(def!constant long-float-normal-exponent-min 1)
(def!constant long-float-normal-exponent-max #x7FFE)
-(def!constant long-float-hidden-bit (ash 1 31)) ; actually not hidden
+(def!constant long-float-hidden-bit (ash 1 31)) ; actually not hidden
(def!constant long-float-trapping-nan-bit (ash 1 30))
(def!constant single-float-digits
(+ (byte-size long-float-significand-byte) n-word-bits 1))
;;; pfw -- from i486 microprocessor programmer's reference manual
-(def!constant float-invalid-trap-bit (ash 1 0))
+(def!constant float-invalid-trap-bit (ash 1 0))
(def!constant float-denormal-trap-bit (ash 1 1))
(def!constant float-divide-by-zero-trap-bit (ash 1 2))
(def!constant float-overflow-trap-bit (ash 1 3))
(def!constant float-underflow-trap-bit (ash 1 4))
-(def!constant float-inexact-trap-bit (ash 1 5))
+(def!constant float-inexact-trap-bit (ash 1 5))
(def!constant float-round-to-nearest 0)
(def!constant float-round-to-negative 1)
(def!constant float-round-to-positive 2)
(def!constant float-round-to-zero 3)
+(def!constant float-precision-24-bit 0)
+(def!constant float-precision-53-bit 2)
+(def!constant float-precision-64-bit 3)
+
(defconstant-eqx float-rounding-mode (byte 2 10) #'equalp)
(defconstant-eqx float-sticky-bits (byte 6 16) #'equalp)
(defconstant-eqx float-traps-byte (byte 6 0) #'equalp)
;;; 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().)
-
-#!+linux
+;;; * 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 #x01000000)
- (def!constant read-only-space-end #x037ff000)
+ (def!constant read-only-space-start #x02000000)
+ (def!constant read-only-space-end #x020ff000)
- (def!constant static-space-start #x05000000)
- (def!constant static-space-end #x07fff000)
+ (def!constant static-space-start #x02100000)
+ (def!constant static-space-end #x021ff000)
(def!constant dynamic-space-start #x09000000)
(def!constant dynamic-space-end #x29000000)
- (def!constant alternate-signal-stack-start #x58000000))
+ (def!constant linkage-table-space-start #x02200000)
+ (def!constant linkage-table-space-end #x022ff000))
+
+#!+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))
-#!+bsd
+#!+freebsd
(progn
+ (def!constant read-only-space-start #x01000000)
+ (def!constant read-only-space-end #x010ff000)
- (def!constant read-only-space-start #x10000000)
- (def!constant read-only-space-end #x1ffff000)
+ (def!constant static-space-start #x01100000)
+ (def!constant static-space-end #x011ff000)
- (def!constant static-space-start
- #!+freebsd #x30000000
- #!+openbsd #x28000000)
- (def!constant static-space-end #x37fff000)
+ (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 #x7b000000)
+ (def!constant read-only-space-end #x7b0ff000)
+
+ (def!constant static-space-start #x7b100000)
+ (def!constant static-space-end #x7b1ff000)
+
+ (def!constant dynamic-space-start #x4c000000)
+ (def!constant dynamic-space-end #x7b0ff000)
+
+ ;; In CMUCL: 0xB0000000->0xB1000000
+ (def!constant linkage-table-space-start #x7b200000)
+ (def!constant linkage-table-space-end #x7b2ff000))
+
+#!+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 dynamic-space-start
- #!+freebsd #x48000000
- #!+openbsd #x50000000)
- (def!constant dynamic-space-end #x88000000)
- (def!constant alternate-signal-stack-start
- #!+freebsd #x44000000
- #!+openbsd #x4c000000))
+ (def!constant static-space-start #x04100000)
+ (def!constant static-space-end #x041ff000)
+ (def!constant dynamic-space-start #x10000000)
+ (def!constant dynamic-space-end #x6ffff000)
-;;; don't need alternate-signal-stack-end : it's -start+SIGSTKSZ
+ (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)
;;; Given that NIL is the first thing allocated in static space, we
;;; know its value at compile time:
cerror
breakpoint
fun-end-breakpoint
- single-step-breakpoint)
+ single-step-around
+ 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)
;;; for the benefit of anyone doing a lexical search for definitions
;;; of these symbols.
-(defenum (:prefix object-not- :suffix -trap :start 16)
+(defenum (:prefix object-not- :suffix -trap :start 24)
list
instance)
(defvar *allocation-pointer*)
(defvar *binding-stack-pointer*)
-;;; FIXME: !COLD-INIT probably doesn't need
-;;; to be in the static symbols table any more.
(defparameter *static-symbols*
- '(t
-
- ;; The C startup code must fill these in.
- *posix-argv*
-
- ;; functions that the C code needs to call. When adding to this list,
- ;; also add a `frob' form in genesis.lisp finish-symbols.
- maybe-gc
- sb!kernel::internal-error
- sb!kernel::control-stack-exhausted-error
- sb!di::handle-breakpoint
- fdefinition-object
-
- ;; free pointers
- ;;
- ;; Note that these are FIXNUM word counts, not (as one might
- ;; expect) byte counts or SAPs. The reason seems to be that by
- ;; representing them this way, we can avoid consing bignums.
- ;; -- WHN 2000-10-02
- *read-only-space-free-pointer*
- *static-space-free-pointer*
- *initial-dynamic-space-free-pointer*
-
- ;; things needed for non-local exit
- *current-catch-block*
- *current-unwind-protect-block*
- *alien-stack*
-
- ;; interrupt handling
- *pseudo-atomic-atomic*
- *pseudo-atomic-interrupted*
- sb!unix::*interrupts-enabled*
- sb!unix::*interrupt-pending*
- *free-interrupt-context-index*
-
- *free-tls-index*
- sb!thread::*foreground-thread-stack*
-
- *allocation-pointer*
- *binding-stack-pointer*
- *binding-stack-start*
- *control-stack-start*
- *control-stack-end*
-
- ;; the floating point constants
- *fp-constant-0d0*
- *fp-constant-1d0*
- *fp-constant-0f0*
- *fp-constant-1f0*
- ;; The following are all long-floats.
- *fp-constant-0l0*
- *fp-constant-1l0*
- *fp-constant-pi*
- *fp-constant-l2t*
- *fp-constant-l2e*
- *fp-constant-lg2*
- *fp-constant-ln2*
-
- ;; The ..SLOT-UNBOUND.. symbol is static in order to optimise the
- ;; common slot unbound check.
- ;;
- ;; FIXME: In SBCL, the CLOS code has become sufficiently tightly
- ;; integrated into the system that it'd probably make sense to use
- ;; the ordinary unbound marker for this.
- sb!pcl::..slot-unbound..))
+ (append
+ *common-static-symbols*
+ *c-callable-static-symbols*
+ '(*alien-stack*
+
+ ;; interrupt handling
+ *pseudo-atomic-bits*
+ #!+sb-thread *stop-for-gc-pending*
+ #!+sb-thread *free-tls-index*
+ #!+sb-thread *tls-index-lock*
+
+ *allocation-pointer*
+ *binding-stack-pointer*
+
+ ;; the floating point constants
+ *fp-constant-0d0*
+ *fp-constant-1d0*
+ *fp-constant-0f0*
+ *fp-constant-1f0*
+ ;; The following are all long-floats.
+ *fp-constant-0l0*
+ *fp-constant-1l0*
+ *fp-constant-pi*
+ *fp-constant-l2t*
+ *fp-constant-l2e*
+ *fp-constant-lg2*
+ *fp-constant-ln2*
+
+ ;; For GC-AND-SAVE
+ *restart-lisp-function*
+
+ ;; For the UNWIND-TO-FRAME-AND-CALL VOP
+ *unwind-to-frame-function*
+
+ ;; Needed for callbacks to work across saving cores. see
+ ;; ALIEN-CALLBACK-ASSEMBLER-WRAPPER in c-call.lisp for gory
+ ;; details.
+ sb!alien::*enter-alien-callback*
+
+ ;; see comments in ../x86-64/parms.lisp
+ sb!pcl::..slot-unbound..)))
(defparameter *static-funs*
'(length
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