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;;; -*- Mode: LISP; Syntax: Common-Lisp; Base: 10; Package: python-x86 -*-
;;;
;;; **********************************************************************
;;; This code was written as part of the CMU Common Lisp project at
;;; Carnegie Mellon University, and has been placed in the public domain.
;;; If you want to use this code or any part of CMU Common Lisp, please contact
;;; Scott Fahlman or slisp-group@cs.cmu.edu.
;;;
(ext:file-comment
"$Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/compiler/amd64/parms.lisp,v 1.3 2004/06/18 23:44:42 cwang Rel $")
;;;
;;; **********************************************************************
;;;
;;; This file contains some parameterizations of various VM
;;; attributes for the amd64. This file is separate from other stuff so
;;; that it can be compiled and loaded earlier.
;;;
;;; Written by William Lott.
;;;
;;; Debugged by Paul F. Werkowski Spring/Summer 1995.
;;; Enhancements/debugging by Douglas T. Crosher 1996,1997.
;;;
(in-package :amd64)
(use-package :c)
;;; ### Note: we simultaneously use ``word'' to mean a 64 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 double-words (or dwords).
;;; Therefore, in the instruction definition and register specs, we use the
;;; Intel convention. But whenever we are talking about stuff the rest of
;;; the lisp system might be interested in, we use ``word'' to mean the size
;;; of a descriptor object, which is 64 bits.
;;;; Compiler constants.
(eval-when (compile eval load)
(setf (backend-name *target-backend*) "AMD64")
(setf (backend-version *target-backend*) "AMD x86-64")
(setf (backend-fasl-file-type *target-backend*) "amd64f")
(setf (backend-fasl-file-implementation *target-backend*)
amd64-fasl-file-implementation)
(setf (backend-fasl-file-version *target-backend*) byte-fasl-file-version)
(setf (backend-register-save-penalty *target-backend*) 3)
(setf (backend-byte-order *target-backend*) :little-endian)
;;;#+cross-compiler
;;;(setf (backend-package *target-backend*) :python-x86)
(setf (backend-page-size *target-backend*) 4096)
); eval-when
;;;; Machine Architecture parameters:
(export '(word-bits byte-bits word-shift word-bytes float-sign-shift
single-float-bias single-float-exponent-byte
single-float-significand-byte single-float-normal-exponent-min
single-float-normal-exponent-max single-float-hidden-bit
single-float-trapping-nan-bit single-float-digits
double-float-bias double-float-exponent-byte
double-float-significand-byte double-float-normal-exponent-min
double-float-normal-exponent-max double-float-hidden-bit
double-float-trapping-nan-bit double-float-digits
long-float-bias long-float-exponent-byte
long-float-significand-byte long-float-normal-exponent-min
long-float-normal-exponent-max long-float-hidden-bit
long-float-trapping-nan-bit long-float-digits
float-underflow-trap-bit float-overflow-trap-bit
float-imprecise-trap-bit float-invalid-trap-bit
float-divide-by-zero-trap-bit))
(eval-when (compile load eval)
(defconstant word-bits 64
"Number of bits per word where a word holds one lisp descriptor.")
(defconstant byte-bits 8
"Number of bits per byte where a byte is the smallest addressable object.")
(defconstant word-shift (1- (integer-length (/ word-bits byte-bits)))
"Number of bits to shift between word addresses and byte addresses.")
(defconstant word-bytes (/ word-bits byte-bits)
"Number of bytes in a word.")
) ; eval-when
(eval-when (compile load eval)
(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
(+ (byte-size single-float-significand-byte) 1))
(defconstant double-float-digits
(+ (byte-size double-float-significand-byte) 32 1))
(defconstant long-float-digits
(+ (byte-size long-float-significand-byte) 32 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-precision-24-bit 0)
(defconstant float-precision-53-bit 2)
(defconstant float-precision-64-bit 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
;;;; Description of the target address space.
(export '(target-read-only-space-start
target-static-space-start
target-dynamic-space-start
target-foreign-linkage-space-start
target-foreign-linkage-entry-size))
;;; Where to put the different spaces.
;;;
(defconstant target-read-only-space-start #x10000000)
(defconstant target-static-space-start #x28000000)
(defconstant target-dynamic-space-start #x48000000)
(defconstant target-foreign-linkage-space-start #xB0000000)
(defconstant target-foreign-linkage-entry-size 16) ;In bytes. Duh.
;;; Given that NIL is the first thing allocated in static space, we
;;; know its value at compile time:
;;;
(defparameter nil-value (+ target-static-space-start #x13))
;;;; Other random constants.
(export '(halt-trap pending-interrupt-trap error-trap cerror-trap
breakpoint-trap function-end-breakpoint-trap
dynamic-space-overflow-error-trap
dynamic-space-overflow-warning-trap
single-step-breakpoint-trap
object-not-list-trap object-not-instance-trap
trace-table-normal trace-table-call-site
trace-table-function-prologue trace-table-function-epilogue))
(defenum (:suffix -trap :start 8)
halt
pending-interrupt
error
cerror
breakpoint
function-end-breakpoint
single-step-breakpoint
dynamic-space-overflow-warning
dynamic-space-overflow-error)
(defenum (:prefix object-not- :suffix -trap :start 16)
list
instance)
(defenum (:prefix trace-table-)
normal
call-site
function-prologue
function-epilogue)
;;;; Static symbols.
(export '(static-symbols static-functions))
;;; These symbols are loaded into static space directly after NIL so
;;; that the system can compute their address by adding a constant
;;; amount to NIL.
;;;
;;; The fdefn objects for the static functions are loaded into static
;;; space directly after the static symbols. That way, the raw-addr
;;; can be loaded directly out of them by indirecting relative to NIL.
;;;
;;; pfw X86 doesn't have enough registers to keep these things there.
;;; Note these spaces grow from low to high addresses.
(defvar *allocation-pointer*)
(defvar *binding-stack-pointer*)
(defvar *x86-cgc-active-p*)
(defvar *static-blue-bag* nil)
(defparameter static-symbols
'(t
;; The C startup code must fill these in.
lisp::lisp-environment-list
lisp::lisp-command-line-list
ext::*batch-mode*
lisp::*initial-fdefn-objects*
;; Functions that the C code needs to call
lisp::%initial-function
lisp::maybe-gc
kernel::internal-error
#+stack-checking kernel::yellow-zone-hit
#+stack-checking kernel::red-zone-hit
#+heap-overflow-check kernel::dynamic-space-overflow-warning-hit
#+heap-overflow-check kernel::dynamic-space-overflow-error-hit
di::handle-breakpoint
lisp::fdefinition-object
;; Free Pointers.
lisp::*read-only-space-free-pointer*
lisp::*static-space-free-pointer*
lisp::*initial-dynamic-space-free-pointer*
;; Things needed for non-local-exit.
lisp::*current-catch-block*
lisp::*current-unwind-protect-block*
*eval-stack-top*
*alien-stack*
;; Interrupt Handling
lisp::*pseudo-atomic-atomic*
lisp::*pseudo-atomic-interrupted*
unix::*interrupts-enabled*
unix::*interrupt-pending*
lisp::*free-interrupt-context-index*
*allocation-pointer*
*binding-stack-pointer*
*internal-gc-trigger* ; Not used.
;; The FP constants
*fp-constant-0d0*
*fp-constant-1d0*
*fp-constant-0s0*
*fp-constant-1s0*
;; 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*
;; Used by gencgc.
*scavenge-read-only-space*
;; Multi-process support.
*control-stacks*
;; Make the ..slot-unbound.. symbol static to optimise the
;; common slot unbound check.
pcl::..slot-unbound..
;; These are filled in the C run-time.
lisp::*cmucl-lib*
lisp::*cmucl-core-path*
;; Spare symbols. Rename these when you need to add some static
;; symbols and don't want to do a cross-compile.
spare-8
spare-7
spare-6
spare-5
spare-4
spare-3
spare-2
spare-1
;; Used by CGC.
*x86-cgc-active-p*
;; Foreign linkage stuff
lisp::*linkage-table-data*
system::*global-table*
*current-region-free-pointer*
*current-region-end-addr*
*static-blue-bag* ; Must be last or change C code
))
(defparameter static-functions
'(length
two-arg-+ two-arg-- two-arg-* two-arg-/ two-arg-< two-arg-> two-arg-= eql
%negate two-arg-and two-arg-ior two-arg-xor two-arg-gcd two-arg-lcm
))
;;;
;;; Stuff added by jrd ----
;;;
;;; cf the sparc PARMS.LISP
(defparameter *assembly-unit-length* 8)