0.8.15.10:

[sbcl.git] / src / compiler / ppc / parms.lisp

diff --git a/src/compiler/ppc/parms.lisp b/src/compiler/ppc/parms.lisp
index 6a1377f..e55c4c0 100644 (file)
--- a/src/compiler/ppc/parms.lisp
+++ b/src/compiler/ppc/parms.lisp
@@ -2,24 +2,27 @@
 ;;;; 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)
@@ -78,23 +81,8 @@
 
 (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))
-
 \f
-
-
 ;;; Where to put the different spaces.
-;;; 
 
 (def!constant read-only-space-start #x01000000)
 (def!constant read-only-space-end   #x04ff8000)