;;;; This file contains some parameterizations of various VM
-;;;; attributes for the PPC. This file is separate from other stuff so
-;;;; that it can be compiled and loaded earlier.
-
+;;;; attributes for the PPC. This file is separate from other stuff so
+;;;; that it can be compiled and loaded earlier.
+
+;;;; This software is part of the SBCL system. See the README file for
+;;;; more information.
+;;;;
+;;;; This software is derived from the CMU CL system, which was
+;;;; written at Carnegie Mellon University and released into the
+;;;; public domain. The software is in the public domain and is
+;;;; provided with absolutely no warranty. See the COPYING and CREDITS
+;;;; files for more information.
(in-package "SB!VM")
-(defconstant n-word-bits 32
- "Number of bits per word where a word holds one lisp descriptor.")
-
-(defconstant n-byte-bits 8
- "Number of bits per byte where a byte is the smallest addressable object.")
+;;; number of bits per word where a word holds one lisp descriptor
+(def!constant n-word-bits 32)
-(defconstant word-shift (1- (integer-length (/ n-word-bits n-byte-bits)))
- "Number of bits to shift between word addresses and byte addresses.")
+;;; the natural width of a machine word (as seen in e.g. register width,
+;;; address space)
+(def!constant n-machine-word-bits 32)
-(defconstant n-word-bytes (/ n-word-bits n-byte-bits)
- "Number of bytes in a word.")
+;;; number of bits per byte where a byte is the smallest addressable
+;;; object
+(def!constant n-byte-bits 8)
+;;; flags for the generational garbage collector
+(def!constant pseudo-atomic-interrupted-flag 1)
+(def!constant pseudo-atomic-flag 4)
-(defconstant float-sign-shift 31)
+(def!constant float-sign-shift 31)
-(defconstant single-float-bias 126)
+(def!constant single-float-bias 126)
(defconstant-eqx single-float-exponent-byte (byte 8 23) #'equalp)
(defconstant-eqx single-float-significand-byte (byte 23 0) #'equalp)
-(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))
+(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))
-(defconstant double-float-bias 1022)
+(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)
-(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))
+(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))
-(defconstant single-float-digits
+(def!constant single-float-digits
(+ (byte-size single-float-significand-byte) 1))
-(defconstant double-float-digits
+(def!constant double-float-digits
(+ (byte-size double-float-significand-byte) n-word-bits 1))
-(defconstant float-inexact-trap-bit (ash 1 0))
-(defconstant float-divide-by-zero-trap-bit (ash 1 1))
-(defconstant float-underflow-trap-bit (ash 1 2))
-(defconstant float-overflow-trap-bit (ash 1 3))
-(defconstant float-invalid-trap-bit (ash 1 4))
-
-(defconstant float-round-to-nearest 0)
-(defconstant float-round-to-zero 1)
-(defconstant float-round-to-positive 2)
-(defconstant float-round-to-negative 3)
-
-(defconstant-eqx float-rounding-mode (byte 2 0) #'equalp) ; RD
-(defconstant-eqx float-sticky-bits (byte 10 19) #'equalp)
-(defconstant-eqx float-traps-byte (byte 6 3) #'equalp)
-(defconstant-eqx float-exceptions-byte (byte 5 0) #'equalp) ; cexc
-
-(defconstant float-fast-bit 2) ; Non-IEEE mode
-
-
-;;; NUMBER-STACK-DISPLACEMENT
+(def!constant float-inexact-trap-bit (ash 1 0))
+(def!constant float-divide-by-zero-trap-bit (ash 1 1))
+(def!constant float-underflow-trap-bit (ash 1 2))
+(def!constant float-overflow-trap-bit (ash 1 3))
+(def!constant float-invalid-trap-bit (ash 1 4))
+
+(def!constant float-round-to-nearest 0)
+(def!constant float-round-to-zero 1)
+(def!constant float-round-to-positive 2)
+(def!constant float-round-to-negative 3)
+
+(defconstant-eqx float-rounding-mode (byte 2 0) #'equalp) ; RD
+;;; FIXME I: Beware, all ye who trespass here. Despite its name,
+;;; FLOAT-STICKY-BITS is not the byte specifier for sticky bits in the
+;;; floating point control word. It is more like "accrued exceptions"
+;;; where FLOAT-EXCEPTIONS-BYTE is "current exceptions". Consequently,
+;;; on architectures where there is no "current exceptions"
+;;; FLOAT-EXCEPTIONS-BYTE and FLOAT-STICKY-BITS had better be the
+;;; same.
;;;
-;;; The number of bytes reserved above the number stack pointer. These
-;;; slots are required by architecture, mostly (?) to make C backtrace
-;;; work.
-;;;
-(defconstant number-stack-displacement
- (* 2 sb!vm:n-word-bytes))
-
-\f
-
-
-;;; Where to put the different spaces.
-;;;
-
-(defconstant read-only-space-start #x01000000)
-(defconstant read-only-space-end #x04ff8000)
-
-(defconstant binding-stack-start #x06000000)
-(defconstant binding-stack-end #x06ff0000)
-
-(defconstant control-stack-start #x07000000)
-(defconstant control-stack-end #x07ff0000)
-
-(defconstant static-space-start #x08000000)
-(defconstant static-space-end #x097fff00)
-
-;;; FIXME: this is a gross violation of OAOO, done purely to support
-;;; the #define of DYNAMIC_SPACE_SIZE in validate.c -- CSR, 2002-02-25
-;;; (these numbers should match dynamic-0-*)
-(defconstant dynamic-space-start #x40000000)
-(defconstant dynamic-space-end #x47fff000)
-
-;;; nothing _seems_ to be using these addresses
-(defconstant dynamic-0-space-start #x40000000)
-(defconstant dynamic-0-space-end #x47fff000)
-(defconstant dynamic-1-space-start #x48000000)
-(defconstant dynamic-1-space-end #x4ffff000)
-
+;;; FIXME II: So, I've now documented this in comments in the PowerPC
+;;; tree. This may not make it easy to find for when new architectures
+;;; get backends written...
+;;;
+;;; CSR, 2002-06-11
+(defconstant-eqx float-sticky-bits (byte 5 25) #'equalp)
+(defconstant-eqx float-traps-byte (byte 5 3) #'equalp)
+(defconstant-eqx float-exceptions-byte (byte 5 25) #'equalp) ; cexc
+(def!constant float-fast-bit 2) ; Non-IEEE mode
\f
-;;;; Other random constants.
-
-(defenum (:suffix -trap :start 8)
- halt
- pending-interrupt
- error
- cerror
- breakpoint
- fun-end-breakpoint
- after-breakpoint
- fixnum-additive-overflow)
-
-(defenum (:prefix object-not- :suffix -trap :start 16)
- list
- instance)
-
-(defenum (:prefix trace-table-)
- normal
- call-site
- fun-prologue
- fun-epilogue)
-
+;;;; Where to put the different spaces.
+
+;;; On non-gencgc we need large dynamic and static spaces for PURIFY
+#!-gencgc
+(progn
+ (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)
+
+ (def!constant linkage-table-space-start #x0a000000)
+ (def!constant linkage-table-space-end #x0b000000))
+
+;;; While on gencgc we don't.
+#!+gencgc
+(!gencgc-space-setup #x04000000
+ #!+linux #x4f000000
+ #!+netbsd #x4f000000
+ #!+openbsd #x4f000000
+ #!+darwin #x10000000)
+
+(def!constant linkage-table-entry-size 16)
+
+#!+linux
+(progn
+ #!-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)))
+
+#!+netbsd
+(progn
+ #!-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)))
+
+;;; Text and data segments start at #x01800000. Range for randomized
+;;; malloc() starts #x20000000 (MAXDSIZ) after end of data seg and
+;;; extends 256 MB. Use 512 - 64 MB for dynamic space so we can run
+;;; under default resource limits.
+;;; FIXME: MAXDSIZ is a kernel parameter, and can vary as high as 1GB.
+;;; These parameters should probably be tested under such a configuration,
+;;; as rare as it might or might not be.
+#!+openbsd
+(progn
+ #!-gencgc
+ (progn
+ (def!constant dynamic-0-space-start #x4f000000)
+ (def!constant dynamic-0-space-end #x5cfff000)
+ (def!constant dynamic-1-space-start #x5f000000)
+ (def!constant dynamic-1-space-end #x6cfff000)))
+
+#!+darwin
+(progn
+ #!-gencgc
+ (progn
+ (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)))
+\f
+;;;; Other miscellaneous constants.
+
+(defenum (:start 8)
+ halt-trap
+ pending-interrupt-trap
+ error-trap
+ cerror-trap
+ breakpoint-trap
+ fun-end-breakpoint-trap
+ after-breakpoint-trap
+ fixnum-additive-overflow-trap
+ single-step-around-trap
+ single-step-before-trap)
+
+(defenum (:start 24)
+ object-not-list-trap
+ object-not-instance-trap)
\f
;;;; Static symbols.
;;; can be loaded directly out of them by indirecting relative to NIL.
;;;
(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::%initial-fun
- sb!impl::maybe-gc
- sb!kernel::internal-error
- sb!di::handle-breakpoint
- sb!impl::fdefinition-object
-
- ;; Free Pointers.
- *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*
- *eval-stack-top*
-
- ;; Interrupt Handling
- *free-interrupt-context-index*
- sb!unix::*interrupts-enabled*
- sb!unix::*interrupt-pending*
-
- #|sb!kernel::*current-thread*|#
- ))
+ (append
+ *common-static-symbols*
+ *c-callable-static-symbols*
+ '(
+ #!+gencgc *restart-lisp-function*
+
+ ;; CLH: 20060210 Taken from x86-64/parms.lisp per JES' suggestion
+ ;; 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*)))
(defparameter *static-funs*
'(length
sb!kernel:two-arg->
sb!kernel:two-arg-=
sb!kernel:two-arg-<=
- sb!kernel:two-arg->=
+ sb!kernel:two-arg->=
sb!kernel:two-arg-/=
eql
sb!kernel:%negate
sb!kernel:two-arg-and
sb!kernel:two-arg-ior
sb!kernel:two-arg-xor
+ sb!kernel:two-arg-eqv
sb!kernel:two-arg-gcd
sb!kernel:two-arg-lcm))
-
-\f
-;;;; Assembler parameters:
-
-;;; The number of bits per element in the assemblers code vector.
-;;;
-(defparameter *assembly-unit-length* 8)
projects / sbcl.git / blobdiff