(in-package "SB!VM")
-(file-comment
- "$Header$")
-
;;; ### Note: we simultaneously use ``word'' to mean a 32 bit quantity
;;; and a 16 bit quantity depending on context. This is because Intel
;;; insists on calling 16 bit things words and 32 bit things
\f
;;;; machine architecture parameters
-(eval-when (:compile-toplevel :load-toplevel :execute)
-
-(defconstant word-bits 32
- #!+sb-doc
- "Number of bits per word where a word holds one lisp descriptor.")
-
-(defconstant byte-bits 8
- #!+sb-doc
- "Number of bits per byte where a byte is the smallest addressable object.")
-
-(defconstant word-shift (1- (integer-length (/ word-bits byte-bits)))
- #!+sb-doc
- "Number of bits to shift between word addresses and byte addresses.")
-
-(defconstant word-bytes (/ word-bits byte-bits)
- #!+sb-doc
- "Number of bytes in a word.")
-
-) ; EVAL-WHEN
-
-(eval-when (:compile-toplevel :load-toplevel :execute)
-(defconstant 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.
-(defconstant single-float-bias 126) ; Intel says 127
-(defconstant single-float-exponent-byte (byte 8 23))
-(defconstant single-float-significand-byte (byte 23 0))
-;; The 486 book shows the exponent range -126 to +127. The Lisp
-;; code that uses these values seems to want already biased numbers.
-(defconstant single-float-normal-exponent-min 1)
-(defconstant single-float-normal-exponent-max 254)
-(defconstant single-float-hidden-bit (ash 1 23))
-(defconstant single-float-trapping-nan-bit (ash 1 22))
-
-(defconstant double-float-bias 1022)
-(defconstant double-float-exponent-byte (byte 11 20))
-(defconstant double-float-significand-byte (byte 20 0))
-(defconstant double-float-normal-exponent-min 1)
-(defconstant double-float-normal-exponent-max #x7FE)
-(defconstant double-float-hidden-bit (ash 1 20))
-(defconstant double-float-trapping-nan-bit (ash 1 19))
-
-(defconstant long-float-bias 16382)
-(defconstant long-float-exponent-byte (byte 15 0))
-(defconstant long-float-significand-byte (byte 31 0))
-(defconstant long-float-normal-exponent-min 1)
-(defconstant long-float-normal-exponent-max #x7FFE)
-(defconstant long-float-hidden-bit (ash 1 31)) ; Actually not hidden
-(defconstant long-float-trapping-nan-bit (ash 1 30))
-
-(defconstant single-float-digits
+;;; 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)
+
+(def!constant float-sign-shift 31)
+
+;;; comment from CMU CL:
+;;; 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.
+(defconstant-eqx single-float-exponent-byte (byte 8 23) #'equalp)
+(defconstant-eqx single-float-significand-byte (byte 23 0) #'equalp)
+;;; comment from CMU CL:
+;;; The 486 book shows the exponent range -126 to +127. The Lisp
+;;; code that uses these values seems to want already biased numbers.
+(def!constant single-float-normal-exponent-min 1)
+(def!constant single-float-normal-exponent-max 254)
+(def!constant single-float-hidden-bit (ash 1 23))
+(def!constant single-float-trapping-nan-bit (ash 1 22))
+
+(def!constant double-float-bias 1022)
+(defconstant-eqx double-float-exponent-byte (byte 11 20) #'equalp)
+(defconstant-eqx double-float-significand-byte (byte 20 0) #'equalp)
+(def!constant double-float-normal-exponent-min 1)
+(def!constant double-float-normal-exponent-max #x7FE)
+(def!constant double-float-hidden-bit (ash 1 20))
+(def!constant double-float-trapping-nan-bit (ash 1 19))
+
+(def!constant long-float-bias 16382)
+(defconstant-eqx long-float-exponent-byte (byte 15 0) #'equalp)
+(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-trapping-nan-bit (ash 1 30))
+
+(def!constant single-float-digits
(+ (byte-size single-float-significand-byte) 1))
-(defconstant double-float-digits
- (+ (byte-size double-float-significand-byte) word-bits 1))
-
-(defconstant long-float-digits
- (+ (byte-size long-float-significand-byte) word-bits 1))
-
-;;; pfw -- from i486 microprocessor programmers reference manual
-(defconstant float-invalid-trap-bit (ash 1 0))
-(defconstant float-denormal-trap-bit (ash 1 1))
-(defconstant float-divide-by-zero-trap-bit (ash 1 2))
-(defconstant float-overflow-trap-bit (ash 1 3))
-(defconstant float-underflow-trap-bit (ash 1 4))
-(defconstant float-inexact-trap-bit (ash 1 5))
-
-(defconstant float-round-to-nearest 0)
-(defconstant float-round-to-negative 1)
-(defconstant float-round-to-positive 2)
-(defconstant float-round-to-zero 3)
-
-(defconstant float-rounding-mode (byte 2 10))
-(defconstant float-sticky-bits (byte 6 16))
-(defconstant float-traps-byte (byte 6 0))
-(defconstant float-exceptions-byte (byte 6 16))
-(defconstant float-precision-control (byte 2 8))
-(defconstant float-fast-bit 0) ; No fast mode on x86
-
-); EVAL-WHEN
+(def!constant double-float-digits
+ (+ (byte-size double-float-significand-byte) n-word-bits 1))
+
+(def!constant long-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-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-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)
+(defconstant-eqx float-exceptions-byte (byte 6 16) #'equalp)
+(defconstant-eqx float-precision-control (byte 2 8) #'equalp)
+(def!constant float-fast-bit 0) ; no fast mode on x86
\f
;;;; description of the target address space
;;; where to put the different spaces
;;;
-;;; FIXME: Couldn't/shouldn't these be DEFCONSTANT instead of DEFPARAMETER?
-;;;
-;;; FIXME: Since SBCL has a different way of distinguishing between target
-;;; and host than the old CMU CL code used, the "TARGET-" prefix is
-;;; redundant. Perhaps each *TARGET-FOO* should become *FOO*, probably
-;;; at the same time that we unscrew the kludgy way that constants are
-;;; duplicated between this file and runtime/x86-validate.h.
-;;;
;;; Note: Mostly these values are black magic, inherited from CMU CL
-;;; without any documentation. However, there have been a few changes
-;;; since the fork:
-;;; * The FreeBSD STATIC-SPACE-START value was bumped up
-;;; from #x28000000 to #x30000000 when FreeBSD ld.so dynamic linking
+;;; without any documentation. However, there were a few explanatory
+;;; comments in the CMU CL sources:
+;;; * On Linux,
+;;; ** The space 0x08000000-0x10000000 is "C program and memory allocation".
+;;; ** The space 0x40000000-0x48000000 is reserved for shared libs.
+;;; ** The space >0xE0000000 is "C stack - Alien stack".
+;;; * On FreeBSD,
+;;; ** The space 0x0E000000-0x10000000 is "Foreign segment".
+;;; ** The space 0x20000000-0x30000000 is reserved for shared libs.
+;;; And there have been some changes since the fork from CMU CL:
+;;; * The OpenBSD port is new since the fork. We started with
+;;; the FreeBSD address map, which actually worked until the
+;;; Alpha port patches, for reasons which in retrospect are rather
+;;; mysterious. After the Alpha port patches were added, the
+;;; OpenBSD port suffered memory corruption problems. While
+;;; debugging those, it was discovered that src/runtime/trymap
+;;; failed for the control stack region #x40000000-#x47fff000.
+;;; After the control stack was moved upward out of this region
+;;; (stealing some bytes from dynamic space) the problems went
+;;; away.
+;;; * The FreeBSD STATIC-SPACE-START value was bumped up from
+;;; #x28000000 to #x30000000 when FreeBSD ld.so dynamic linking
;;; support was added for FreeBSD ca. 20000910. This was to keep from
-;;; 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().)
+;;; 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!
+
#!+linux
(progn
- (defconstant read-only-space-start #x01000000)
- (defconstant static-space-start #x05000000)
- (defparameter *dynamic-space-start* #x09000000))
-#!+bsd
+ (def!constant read-only-space-start #x01000000)
+ (def!constant read-only-space-end #x037ff000)
+
+ (def!constant static-space-start #x05000000)
+ (def!constant static-space-end #x07fff000)
+
+ (def!constant dynamic-space-start #x09000000)
+ (def!constant dynamic-space-end #x29000000)
+
+ (def!constant linkage-table-space-start #x70000000)
+ (def!constant linkage-table-space-end #x7ffff000))
+
+#!+freebsd
+(progn
+ (def!constant read-only-space-start #x10000000)
+ (def!constant read-only-space-end #x1ffff000)
+
+ (def!constant static-space-start #x30000000)
+ (def!constant static-space-end #x37fff000)
+
+ (def!constant dynamic-space-start #x48000000)
+ (def!constant dynamic-space-end #x88000000)
+
+ ;; In CMUCL: 0xB0000000->0xB1000000
+ (def!constant linkage-table-space-start #x90000000)
+ (def!constant linkage-table-space-end #x91000000))
+
+#!+openbsd
(progn
- (defconstant read-only-space-start #x10000000)
- (defconstant static-space-start
- #!+freebsd #x30000000
- #!+openbsd #x28000000)
- (defparameter *dynamic-space-start* #x48000000))
+ (def!constant read-only-space-start #x40000000)
+ (def!constant read-only-space-end #x47fff000)
+
+ (def!constant static-space-start #x50000000)
+ (def!constant static-space-end #x5ffff000)
+
+ (def!constant dynamic-space-start #x80000000)
+ (def!constant dynamic-space-end #xA0000000)
+
+ ;; In CMUCL: 0xB0000000->0xB1000000
+ (def!constant linkage-table-space-start #xA0000000)
+ (def!constant linkage-table-space-end #xA1000000))
+
+#!+netbsd
+(progn
+ (def!constant read-only-space-start #x20000000)
+ (def!constant read-only-space-end #x2ffff000)
+
+ (def!constant static-space-start #x30000000)
+ (def!constant static-space-end #x37fff000)
+
+ (def!constant dynamic-space-start #x60000000)
+ (def!constant dynamic-space-end #x98000000)
+
+ ;; In CMUCL: 0xB0000000->0xB1000000
+ (def!constant linkage-table-space-start #xA0000000)
+ (def!constant linkage-table-space-end #xA1000000))
+
+;;; 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:
-(defconstant nil-value (+ static-space-start #xb))
+(def!constant nil-value (+ static-space-start #xb))
\f
;;;; other miscellaneous constants
error
cerror
breakpoint
- function-end-breakpoint
+ fun-end-breakpoint
single-step-breakpoint)
-;;; FIXME: It'd be nice to replace all the DEFENUMs with something
-;;; a la
+;;; FIXME: It'd be nice to replace all the DEFENUMs with something like
;;; (WITH-DEF-ENUM (:START 8)
;;; (DEF-ENUM HALT-TRAP)
;;; (DEF-ENUM PENDING-INTERRUPT-TRAP)
(defenum (:prefix trace-table-)
normal
call-site
- function-prologue
- function-epilogue)
+ fun-prologue
+ fun-epilogue)
\f
;;;; static symbols
;;; Note these spaces grow from low to high addresses.
(defvar *allocation-pointer*)
(defvar *binding-stack-pointer*)
-(defvar *x86-cgc-active-p*) ; FIXME: Document this.
-(defvar *static-blue-bag* nil)
-;;; FIXME: *!INITIAL-FDEFN-OBJECTS* and !COLD-INIT probably don't need
-;;; to be in the static symbols table any more. Also, if
-;;; *INTERNAL-GC-TRIGGER* really is not used, we can punt it.
+;;; 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*
- sb!impl::*!initial-fdefn-objects*
- ;; functions that the C code needs to call
- sb!impl::!cold-init
- sb!impl::maybe-gc
+ ;; functions that the C code needs to call. When adding to this list,
+ ;; also add a `frob' form in genesis.lisp finish-symbols.
+ sub-gc
sb!kernel::internal-error
+ sb!kernel::control-stack-exhausted-error
+ sb!kernel::undefined-alien-variable-error
+ sb!kernel::undefined-alien-function-error
sb!di::handle-breakpoint
- sb!impl::fdefinition-object
+ fdefinition-object
+ #!+sb-thread sb!thread::handle-thread-exit
;; free pointers
;;
*initial-dynamic-space-free-pointer*
;; things needed for non-local exit
- sb!impl::*current-catch-block*
- sb!impl::*current-unwind-protect-block*
- sb!c::*eval-stack-top*
- sb!vm::*alien-stack*
+ *current-catch-block*
+ *current-unwind-protect-block*
+ *alien-stack*
;; interrupt handling
- sb!impl::*pseudo-atomic-atomic*
- sb!impl::*pseudo-atomic-interrupted*
+ *pseudo-atomic-atomic*
+ *pseudo-atomic-interrupted*
sb!unix::*interrupts-enabled*
sb!unix::*interrupt-pending*
- sb!impl::*free-interrupt-context-index*
+ *free-interrupt-context-index*
- sb!vm::*allocation-pointer*
- sb!vm::*binding-stack-pointer*
- sb!vm::*internal-gc-trigger* ; Not used.
+ *free-tls-index*
+
+ *allocation-pointer*
+ *binding-stack-pointer*
+ *binding-stack-start*
+ *control-stack-start*
+ *control-stack-end*
;; the floating point constants
- sb!vm::*fp-constant-0d0*
- sb!vm::*fp-constant-1d0*
- sb!vm::*fp-constant-0s0*
- sb!vm::*fp-constant-1s0*
+ *fp-constant-0d0*
+ *fp-constant-1d0*
+ *fp-constant-0f0*
+ *fp-constant-1f0*
;; The following are all long-floats.
- sb!vm::*fp-constant-0l0*
- sb!vm::*fp-constant-1l0*
- sb!vm::*fp-constant-pi*
- sb!vm::*fp-constant-l2t*
- sb!vm::*fp-constant-l2e*
- sb!vm::*fp-constant-lg2*
- sb!vm::*fp-constant-ln2*
-
- ;; used by gencgc
- sb!vm::*scavenge-read-only-space*
-
- ;; multi-process support
- sb!vm::*control-stacks*
+ *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..
-
- ;; spare symbols
- sb!vm::spare-10
- sb!vm::spare-9
- sb!vm::spare-8
- sb!vm::spare-7
- sb!vm::spare-6
- sb!vm::spare-5
- sb!vm::spare-4
- sb!vm::spare-3
- sb!vm::spare-2
- sb!vm::spare-1
-
- ;; used by cgc
- sb!vm::*x86-cgc-active-p*
- sb!vm::*static-blue-bag* ; must be last or change C code
))
-(defparameter *static-functions*
+(defparameter *static-funs*
'(length
sb!kernel:two-arg-+
sb!kernel:two-arg--
projects / sbcl.git / blobdiff