;;;; 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")
-(def!constant n-word-bits 32
- "Number of bits per word where a word holds one lisp descriptor.")
+;;; 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)
-(def!constant n-byte-bits 8
- "Number of bits per byte where a byte is the smallest addressable object.")
-
-(def!constant word-shift (1- (integer-length (/ n-word-bits n-byte-bits)))
- "Number of bits to shift between word addresses and byte addresses.")
-
-(def!constant 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)
(def!constant float-sign-shift 31)
(def!constant float-round-to-positive 2)
(def!constant float-round-to-negative 3)
-(defconstant-eqx float-rounding-mode (byte 2 0) #'equalp) ; RD
+(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.
+;;; same.
;;;
;;; 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
;;; 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
+(defconstant-eqx float-exceptions-byte (byte 5 25) #'equalp) ; cexc
-(def!constant float-fast-bit 2) ; Non-IEEE mode
-
-
-;;; NUMBER-STACK-DISPLACEMENT
-;;;
-;;; The number of bytes reserved above the number stack pointer. These
-;;; slots are required by architecture, mostly (?) to make C backtrace
-;;; work. This must be a power of 2 - see BYTES-REQUIRED-FOR-NUMBER-STACK.
-;;;
-(def!constant number-stack-displacement
- (* #!-darwin 2
- #!+darwin 8
- sb!vm:n-word-bytes))
+(def!constant float-fast-bit 2) ; Non-IEEE mode
\f
-
-
;;; Where to put the different spaces.
-;;;
(def!constant read-only-space-start #x01000000)
(def!constant read-only-space-end #x04ff8000)
(def!constant static-space-start #x08000000)
(def!constant 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-*)
-(def!constant dynamic-space-start #x40000000)
-(def!constant dynamic-space-end #x47fff000)
-
-;;; nothing _seems_ to be using these addresses
-(def!constant dynamic-0-space-start #x40000000)
-(def!constant dynamic-0-space-end #x47fff000)
-(def!constant dynamic-1-space-start #x48000000)
-(def!constant dynamic-1-space-end #x4ffff000)
-
-
-
+;;; 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)
+
+#!+darwin
+(progn
+ (def!constant linkage-table-space-start #x0a000000)
+ (def!constant linkage-table-space-end #x0b000000)
+ (def!constant linkage-table-entry-size 16))
\f
-;;;; Other random constants.
+;;;; Other miscellaneous constants.
(defenum (:suffix -trap :start 8)
halt
sb!impl::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
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
projects / sbcl.git / blobdiff