source: release/1.7/source/compiler/X86/X8664/x8664-arch.lisp

;;;-*- Mode: Lisp; Package: (X8664 :use CL) -*-

;;;

;;;   Copyright (C) 2005-2009 Clozure Associates and contributors.

;;;   This file is part of Clozure CL.  

;;;

;;;   Clozure CL is licensed under the terms of the Lisp Lesser GNU Public

;;;   License , known as the LLGPL and distributed with Clozure CL as the

;;;   file "LICENSE".  The LLGPL consists of a preamble and the LGPL,

;;;   which is distributed with Clozure CL as the file "LGPL".  Where these

;;;   conflict, the preamble takes precedence.  

;;;

;;;   Clozure CL is referenced in the preamble as the "LIBRARY."

;;;

;;;   The LLGPL is also available online at

;;;   http://opensource.franz.com/preamble.html



(defpackage "X8664"

  (:use "CL")

  #+x8664-target

  (:nicknames "TARGET"))



(in-package "X8664")



(eval-when (:compile-toplevel :load-toplevel :execute)

  (require "X86-ARCH")

  (require "X86-LAP")

  

(defparameter *x8664-symbolic-register-names*

  (make-hash-table :test #'equal)

  "For the disassembler, mostly")



;;; define integer constants which map to

;;; indices in the X86::*X8664-REGISTER-ENTRIES* array.

(ccl::defenum ()

  rax

  rcx

  rdx

  rbx

  rsp

  rbp

  rsi

  rdi

  r8

  r9

  r10

  r11

  r12

  r13

  r14

  r15

  ;; 32-bit registers

  eax

  ecx

  edx

  ebx

  esp

  ebp

  esi

  edi

  r8d

  r9d

  r10d

  r11d

  r12d

  r13d

  r14d

  r15d

  ;; 16-bit-registers

  ax

  cx

  dx

  bx

  sp

  bp

  si

  di

  r8w

  r9w

  r10w

  r11w

  r12w

  r13w

  r14w

  r15w

  ;; 8-bit registers

  al

  cl

  dl

  bl

  spl

  bpl

  sil

  dil

  r8b

  r9b

  r10b

  r11b

  r12b

  r13b

  r14b

  r15b

       ;;; xmm registers

  xmm0

  xmm1

  xmm2

  xmm3

  xmm4

  xmm5

  xmm6

  xmm7

  xmm8

  xmm9

  xmm10

  xmm11

  xmm12

  xmm13

  xmm14

  xmm15

  ;; MMX registers

  mm0

  mm1

  mm2

  mm3

  mm4

  mm5

  mm6

  mm7

  ;; x87 FP regs.  May or may not be useful.

  st[0]

  st[1]

  st[2]

  st[3]

  st[4]

  st[5]

  st[6]

  st[7]

  ;; Segment registers

  cs

  ds

  ss

  es

  fs

  gs

  rip

  )



(defmacro defx86reg (alias known)

  (let* ((known-entry (gensym)))

    `(let* ((,known-entry (gethash ,(string known) x86::*x8664-registers*)))

      (unless ,known-entry

        (error "register ~a not defined" ',known))

      (setf (gethash ,(string alias) x86::*x8664-registers*) ,known-entry)

      (unless (gethash ,(string-downcase (string known)) *x8664-symbolic-register-names*)

        (setf (gethash ,(string-downcase (string known)) *x8664-symbolic-register-names*)

              (string-downcase ,(string alias))))

      (defconstant ,alias ,known))))



(defx86reg imm0 rax)

(defx86reg imm0.l eax)

(defx86reg imm0.w ax)

(defx86reg imm0.b al)



(defx86reg temp0 rbx)

(defx86reg temp0.l ebx)

(defx86reg temp0.w bx)

(defx86reg temp0.b bl)



(defx86reg imm2 rcx)

(defx86reg nargs ecx)

(defx86reg imm2.l ecx)

(defx86reg nargs.w cx)

(defx86reg nargs.q rcx)

(defx86reg imm2.w cx)

(defx86reg imm2.b cl)

(defx86reg shift cl)



(defx86reg imm1 rdx)

(defx86reg imm1.l edx)

(defx86reg imm1.w dx)

(defx86reg imm1.b dl)



(defx86reg arg_z rsi)

(defx86reg arg_z.l esi)

(defx86reg arg_z.w si)

(defx86reg arg_z.b sil)



(defx86reg arg_y rdi)

(defx86reg arg_y.l edi)

(defx86reg arg_y.w di)

(defx86reg arg_y.b dil)



(defx86reg arg_x r8)

(defx86reg arg_x.l r8d)

(defx86reg arg_x.w r8w)

(defx86reg arg_x.b r8b)



(defx86reg temp1 r9)

(defx86reg temp1.l r9d)

(defx86reg temp1.w r9w)

(defx86reg temp1.b r9b)



(defx86reg temp2 r10)

(defx86reg temp2.l r10d)

(defx86reg temp2.w r10w)

(defx86reg temp2.b r10b)



(defx86reg ra0 r10)

(defx86reg ra0.l r10d)

(defx86reg ra0.w r10w)

(defx86reg ra0.b r10b)



#+(or darwin-target windows-target)

(defx86reg rcontext r11)



(defx86reg save3 r11)

(defx86reg save3.l r11d)

(defx86reg save3.w r11w)

(defx86reg save3.b r11b)





(defx86reg save2 r12)

(defx86reg save2.l r12d)

(defx86reg save2.w r12w)

(defx86reg save2.b r12b)



(defx86reg fn r13)

(defx86reg fn.l r13d)

(defx86reg fn.w r13w)

(defx86reg fn.b r13b)



(defx86reg save1 r14)

(defx86reg save1.l r14d)

(defx86reg save1.w r14w)

(defx86reg save1.b r14b)



(defx86reg save0 r15)

(defx86reg save0.l r15d)

(defx86reg save0.w r15w)

(defx86reg save0.b r15b)



;;; Use xmm regs for floating-point.  (They can also hold integer values.)

(defx86reg fp0 xmm0)

(defx86reg fp1 xmm1)

(defx86reg fp2 xmm2)

(defx86reg fp3 xmm3)

(defx86reg fp4 xmm4)

(defx86reg fp5 xmm5)

(defx86reg fp6 xmm6)

(defx86reg fp7 xmm7)

(defx86reg fp8 xmm8)

(defx86reg fp9 xmm9)

(defx86reg fp10 xmm10)

(defx86reg fp11 xmm11)

(defx86reg fp12 xmm12)

(defx86reg fp13 xmm13)

(defx86reg fp14 xmm14)

(defx86reg fpzero xmm15)

(defx86reg fp15 xmm15)



;;; There are only 8 mmx registers, and they overlap the x87 FPU.

(defx86reg stack-temp mm7)





;;; NEXT-METHOD-CONTEXT is passed from gf-dispatch code to the method

;;; functions that it funcalls.  FNAME is only meaningful when calling

;;; globally named functions through the function cell of a symbol.

;;; It appears that they're never live at the same time.

;;; (We can also consider passing next-method context on the stack.)



(defx86reg fname temp0)

(defx86reg next-method-context temp0)

;;; We rely one at least one of %ra0/%fn pointing to the current function

;;; (or to a TRA that references the function) at all times.  When we

;;; tail call something, we want %RA0 to point to our caller's TRA and

;;; %FN to point to the new function.  Unless we go out of line to

;;; do tail calls, we need some register not involved in the calling

;;; sequence to hold the current function, since it might get GCed otherwise.

;;; (The odds of this happening are low, but non-zero.)

(defx86reg xfn temp1)



(defx86reg ra1 fn)



(defx86reg allocptr temp0)



    

(defconstant nbits-in-word 64)

(defconstant nbits-in-byte 8)

(defconstant ntagbits 4)

(defconstant nlisptagbits 3)

(defconstant nfixnumtagbits 3)

(defconstant num-subtag-bits 8)

(defconstant fixnumshift 3)

(defconstant fixnum-shift 3)

(defconstant fulltagmask 15)

(defconstant tagmask 7)

(defconstant fixnummask 7)

(defconstant ncharcodebits 8)

(defconstant charcode-shift 8)

(defconstant word-shift 3)

(defconstant word-size-in-bytes 8)

(defconstant node-size word-size-in-bytes)

(defconstant dnode-size 16)

(defconstant dnode-align-bits 4)

(defconstant dnode-shift dnode-align-bits)

(defconstant bitmap-shift 6)



(defconstant fixnumone (ash 1 fixnumshift))

(defconstant fixnum-one fixnumone)

(defconstant fixnum1 fixnumone)



(defconstant target-most-negative-fixnum (ash -1 (1- (- nbits-in-word nfixnumtagbits))))

(defconstant target-most-positive-fixnum (1- (ash 1 (1- (- nbits-in-word nfixnumtagbits)))))



;;; 3-bit "lisptag" values



(defconstant tag-fixnum 0)

(defconstant tag-imm-0 1)               ;subtag-single-float ONLY

(defconstant tag-imm-1 2)               ;subtag-character, internal markers

(defconstant tag-list 3)                ;fulltag-cons or NIL

(defconstant tag-tra 4)                 ;tagged return-address

(defconstant tag-misc 5)                ;random uvector

(defconstant tag-symbol 6)              ;non-null symbol

(defconstant tag-function 7)            ;function entry point



(defconstant tag-single-float tag-imm-0)



;;; 4-bit "fulltag" values

(defconstant fulltag-even-fixnum 0)

(defconstant fulltag-imm-0 1)           ;subtag-single-float ONLY

(defconstant fulltag-imm-1 2)           ;characters, markers

(defconstant fulltag-cons 3)

(defconstant fulltag-tra-0 4)           ;tagged return address

(defconstant fulltag-nodeheader-0 5)

(defconstant fulltag-nodeheader-1 6)

(defconstant fulltag-immheader-0 7)

(defconstant fulltag-odd-fixnum 8)

(defconstant fulltag-immheader-1 9)

(defconstant fulltag-immheader-2 10)

(defconstant fulltag-nil 11)

(defconstant fulltag-tra-1 12)

(defconstant fulltag-misc 13)

(defconstant fulltag-symbol 14)

(defconstant fulltag-function 15)



(defconstant fulltag-single-float fulltag-imm-0)



(defmacro define-subtag (name tag value)

  `(defconstant ,(ccl::form-symbol "SUBTAG-" name) (logior ,tag (ash ,value ntagbits))))





(define-subtag arrayH fulltag-nodeheader-0 10)

(define-subtag vectorH fulltag-nodeheader-1 10)

(define-subtag simple-vector fulltag-nodeheader-1 11)

(defconstant min-vector-subtag  subtag-vectorH)

(defconstant min-array-subtag  subtag-arrayH)



(defconstant ivector-class-64-bit  fulltag-immheader-2)

(defconstant ivector-class-32-bit  fulltag-immheader-1)

(defconstant ivector-class-other-bit  fulltag-immheader-0)



(define-subtag fixnum-vector ivector-class-64-bit 12)

(define-subtag s64-vector ivector-class-64-bit 13)

(define-subtag u64-vector ivector-class-64-bit 14)

(define-subtag double-float-vector ivector-class-64-bit 15)



(define-subtag simple-base-string ivector-class-32-bit 12)

(define-subtag s32-vector ivector-class-32-bit 13)

(define-subtag u32-vector ivector-class-32-bit 14)

(define-subtag single-float-vector ivector-class-32-bit 15)

        

(define-subtag s16-vector ivector-class-other-bit 10)

(define-subtag u16-vector ivector-class-other-bit 11)



(define-subtag s8-vector ivector-class-other-bit 13)

(define-subtag u8-vector ivector-class-other-bit 14)

(defconstant min-8-bit-ivector-subtag subtag-s8-vector)

(defconstant max-8-bit-ivector-subtag subtag-u8-vector)

(define-subtag bit-vector ivector-class-other-bit 15)





;;; There's some room for expansion in non-array ivector space.

(define-subtag macptr ivector-class-64-bit 1)

(define-subtag dead-macptr ivector-class-64-bit 2)

(define-subtag bignum ivector-class-32-bit 1)

(define-subtag double-float ivector-class-32-bit 2)

(define-subtag xcode-vector ivector-class-32-bit 3)





        

;;; Note the difference between (e.g) fulltag-function - which

;;; defines what the low 4 bytes of a function pointer look like -

;;; and subtag-function - which describes what the subtag byte

;;; in a function header looks like.  (Likewise for fulltag-symbol

;;; and subtag-symbol)



;;; don't use nodheader/0, since that would conflict with tag-misc

(define-subtag symbol fulltag-nodeheader-0 1)

(define-subtag catch-frame fulltag-nodeheader-0 2)

(define-subtag hash-vector fulltag-nodeheader-0 3)

(define-subtag pool fulltag-nodeheader-0 4)

(define-subtag weak fulltag-nodeheader-0 5)

(define-subtag package fulltag-nodeheader-0 6)

(define-subtag slot-vector fulltag-nodeheader-0 7)

(define-subtag basic-stream fulltag-nodeheader-0 8)

(define-subtag function fulltag-nodeheader-0 9)



(define-subtag ratio fulltag-nodeheader-1 1)

(define-subtag complex fulltag-nodeheader-1 2)

(define-subtag struct fulltag-nodeheader-1 3)

(define-subtag istruct fulltag-nodeheader-1 4)

(define-subtag value-cell fulltag-nodeheader-1 5)

(define-subtag xfunction fulltag-nodeheader-1 6)

(define-subtag lock fulltag-nodeheader-1 7)

(define-subtag instance fulltag-nodeheader-1 8)



        

(defconstant canonical-nil-value (+ #x13000 fulltag-nil))

(defconstant canonical-t-value (+ #x13020 fulltag-symbol))

(defconstant misc-bias fulltag-misc)

(defconstant cons-bias fulltag-cons)

(defconstant t-offset (- canonical-t-value canonical-nil-value))





(defconstant misc-header-offset (- fulltag-misc))

(defconstant misc-data-offset (+ misc-header-offset node-size))

(defconstant misc-subtag-offset misc-header-offset)

(defconstant misc-dfloat-offset misc-data-offset)

(defconstant misc-symbol-offset (- node-size fulltag-symbol))

(defconstant misc-function-offset (- node-size fulltag-function))

  

(define-subtag single-float fulltag-imm-0 0)



(define-subtag character fulltag-imm-1 0)



(define-subtag unbound fulltag-imm-1 1)

(defconstant unbound-marker subtag-unbound)

(defconstant undefined unbound-marker)

(define-subtag slot-unbound fulltag-imm-1 2)

(defconstant slot-unbound-marker subtag-slot-unbound)

(define-subtag illegal fulltag-imm-1 3)

(defconstant illegal-marker subtag-illegal)

(define-subtag no-thread-local-binding fulltag-imm-1 4)

(defconstant no-thread-local-binding-marker subtag-no-thread-local-binding)

(define-subtag reserved-frame fulltag-imm-1 5)

(defconstant reserved-frame-marker subtag-reserved-frame)



;;; This has two functions: it tells the link-inverting marker where the

;;; code ends and the constants start, and it ensures that the 0th constant

;;; will never be in the same memozized dnode as some (unboxed) word of

;;; machine code.  I'm not sure if there's a better way to do either of those

;;; things.

;;; Depending on how you look at it, we either lose 8 bytes per function, or gain

;;; 7 bytes of otherwise unused space for debugging info.

(define-subtag function-boundary-marker fulltag-imm-1 15)

(defconstant function-boundary-marker subtag-function-boundary-marker)



(defconstant max-64-bit-constant-index (ash (+ #x7fffffff x8664::misc-dfloat-offset) -3))

(defconstant max-32-bit-constant-index (ash (+ #x7fffffff x8664::misc-data-offset) -2))

(defconstant max-16-bit-constant-index (ash (+ #x7fffffff x8664::misc-data-offset) -1))

(defconstant max-8-bit-constant-index (+ #x7fffffff x8664::misc-data-offset))

(defconstant max-1-bit-constant-index (ash (+ #x7fffffff x8664::misc-data-offset) 3))



)

(defmacro define-storage-layout (name origin &rest cells)

  `(progn

    (ccl::defenum (:start ,origin :step 8)

        ,@(mapcar #'(lambda (cell) (ccl::form-symbol name "." cell)) cells))

    (defconstant ,(ccl::form-symbol name ".SIZE") ,(* (length cells)

                                                      8))))



(defmacro define-lisp-object (name tagname &rest cells)

  `(define-storage-layout ,name ,(- (symbol-value tagname)) ,@cells))



(defmacro define-fixedsized-object (name (&optional (fulltag 'fulltag-misc))

                                         &rest non-header-cells)

  `(progn

     (define-lisp-object ,name ,fulltag header ,@non-header-cells)

     (ccl::defenum ()

       ,@(mapcar #'(lambda (cell) (ccl::form-symbol name "." cell "-CELL")) non-header-cells))

     (defconstant ,(ccl::form-symbol name ".ELEMENT-COUNT") ,(length non-header-cells))))



;;; Order of CAR and CDR doesn't seem to matter much - there aren't

;;; too many tricks to be played with predecrement/preincrement addressing.

;;; Keep them in the confusing MCL 3.0 order, to avoid confusion.

(define-lisp-object cons fulltag-cons 

  cdr 

  car)



(define-fixedsized-object ratio ()

  numer

  denom)



;;; It's slightly easier (for bootstrapping reasons)

;;; to view a DOUBLE-FLOAT as being UVECTOR with 2 32-bit elements

;;; (rather than 1 64-bit element).



(defconstant double-float.value misc-data-offset)

(defconstant double-float.value-cell 0)

(defconstant double-float.val-low double-float.value)

(defconstant double-float.val-low-cell 0)

(defconstant double-float.val-high (+ double-float.value 4))

(defconstant double-float.val-high-cell 1)

(defconstant double-float.element-count 2)

(defconstant double-float.size 16)



(define-fixedsized-object complex ()

  realpart

  imagpart

)



;;; There are two kinds of macptr; use the length field of the header if you

;;; need to distinguish between them

(define-fixedsized-object macptr ()

  address

  domain

  type

)



(define-fixedsized-object xmacptr ()

  address

  domain

  type

  flags

  link

)





;;; Need to think about catch frames on x8664.

(define-fixedsized-object catch-frame ()

  catch-tag                             ; #<unbound> -> unwind-protect, else catch

  link                                  ; tagged pointer to next older catch frame

  mvflag                                ; 0 if single-value, 1 if uwp or multiple-value

  rsp                                   ;

  rbp

  foreign-sp

  db-link                               ; value of dynamic-binding link on thread entry.

  save-save3                            ; saved nvrs

  save-save2

  save-save1

  save-save0

  xframe                                ; exception-frame link

  pc                                    ; tra of catch exit/unwind cleanup

)



(define-fixedsized-object lock ()

  _value                                ;finalizable pointer to kernel object

  kind                                  ; '0 = recursive-lock, '1 = rwlock

  writer                                ;tcr of owning thread or 0

  name

  whostate

  whostate-2

  )







;;; If we're pointing at the "symbol-vector", we can use these

(define-fixedsized-object symptr ()

  pname

  vcell

  fcell

  package-predicate

  flags

  plist

  binding-index

)



(define-fixedsized-object symbol (fulltag-symbol)

  pname

  vcell

  fcell

  package-predicate

  flags

  plist

  binding-index

)



(defconstant nilsym-offset (+ t-offset symbol.size))





(define-fixedsized-object vectorH ()

  logsize                               ; fillpointer if it has one, physsize otherwise

  physsize                              ; total size of (possibly displaced) data vector

  data-vector                           ; object this header describes

  displacement                          ; true displacement or 0

  flags                                 ; has-fill-pointer,displaced-to,adjustable bits; subtype of underlying simple vector.

)



(define-lisp-object arrayH fulltag-misc

  header                                ; subtag = subtag-arrayH

  rank                                  ; NEVER 1

  physsize                              ; total size of (possibly displaced) data vector

  data-vector                           ; object this header describes

  displacement                          ; true displacement or 0  

  flags                                 ; has-fill-pointer,displaced-to,adjustable bits; subtype of underlying simple vector.

 ;; Dimensions follow

)



(defconstant arrayH.rank-cell 0)

(defconstant arrayH.physsize-cell 1)

(defconstant arrayH.data-vector-cell 2)

(defconstant arrayH.displacement-cell 3)

(defconstant arrayH.flags-cell 4)

(defconstant arrayH.dim0-cell 5)



(defconstant arrayH.flags-cell-bits-byte (byte 8 0))

(defconstant arrayH.flags-cell-subtag-byte (byte 8 8))



(define-fixedsized-object value-cell ()

  value)





(define-storage-layout lisp-frame 0

  backptr

  return-address

  xtra)



(define-storage-layout tsp-frame 0

  backptr

  rbp)



(define-storage-layout csp-frame 0

  backptr

  rbp)





(define-storage-layout xcf 0            ;"exception callback frame"

  backptr

  return-address                        ; always 0

  nominal-function

  relative-pc

  containing-object

  xp

  ra0

  foreign-sp                            ; value of tcr.foreign_sp

  prev-xframe                           ; tcr.xframe before exception

                                        ; (last 2 needed by apply-in-frame)

  )



;;; The kernel uses these (rather generically named) structures

;;; to keep track of various memory regions it (or the lisp) is

;;; interested in.





(define-storage-layout area 0

  pred                                  ; pointer to preceding area in DLL

  succ                                  ; pointer to next area in DLL

  low                                   ; low bound on area addresses

  high                                  ; high bound on area addresses.

  active                                ; low limit on stacks, high limit on heaps

  softlimit                             ; overflow bound

  hardlimit                             ; another one

  code                                  ; an area-code; see below

  markbits                              ; bit vector for GC

  ndnodes                               ; "active" size of dynamic area or stack

  older                                 ; in EGC sense

  younger                               ; also for EGC

  h                                     ; Handle or null pointer

  softprot                              ; protected_area structure pointer

  hardprot                              ; another one.

  owner                                 ; fragment (library) which "owns" the area

  refbits                               ; bitvector for intergenerational refernces

  threshold                             ; for egc

  gc-count                              ; generational gc count.

  static-dnodes                         ; for honsing. etc

  static-used                           ; bitvector

)





(define-storage-layout protected-area 0

  next

  start                                 ; first byte (page-aligned) that might be protected

  end                                   ; last byte (page-aligned) that could be protected

  nprot                                 ; Might be 0

  protsize                              ; number of bytes to protect

  why)



(eval-when (:compile-toplevel :load-toplevel :execute)

(defconstant tcr-bias 0)

)



(define-storage-layout tcr (- tcr-bias)

  prev                                  ; in doubly-linked list 

  next                                  ; in doubly-linked list

  single-float-convert                  ; faster to box/unbox through memory

  linear

  save-rbp                              ; lisp frame ptr for foreign code

  lisp-fpscr-high

  db-link                               ; special binding chain head 

  catch-top                             ; top catch frame 

  save-vsp                              ; SP when in foreign code 

  save-tsp                              ; TSP, at all times

  foreign-sp                            ; SP when in lisp code

  cs-area                               ; cstack area pointer 

  vs-area                               ; vstack area pointer 

  ts-area                               ; tstack area pointer 

  cs-limit                              ; cstack overflow limit

  total-bytes-allocated

  log2-allocation-quantum               ; unboxed

  interrupt-pending                     ; fixnum

  xframe                                ; exception frame linked list

  errno-loc                             ; thread-private, maybe

  ffi-exception                         ; fpscr bits from ff-call.

  osid                                  ; OS thread id 

  valence                               ; odd when in foreign code 

  foreign-exception-status

  native-thread-info

  native-thread-id

  last-allocptr

  save-allocptr

  save-allocbase

  reset-completion

  activate

  suspend-count

  suspend-context

  pending-exception-context

  suspend                               ; semaphore for suspension notify 

  resume                                ; sempahore for resumption notify

  flags                                 ; foreign, being reset, ...

  gc-context

  termination-semaphore

  unwinding

  tlb-limit

  tlb-pointer

  shutdown-count

  next-tsp

  safe-ref-address

  pending-io-info

  io-datum

)



(defconstant tcr.single-float-convert.value (+ 4 tcr.single-float-convert))





(defconstant interrupt-level-binding-index (ash 1 fixnumshift))



(define-storage-layout lockptr 0

  avail

  owner

  count

  signal

  waiting

  malloced-ptr

  spinlock)



(define-storage-layout rwlock 0

  spin

  state

  blocked-writers

  blocked-readers

  writer

  reader-signal

  writer-signal

  malloced-ptr

  )



(defmacro define-header (name element-count subtag)

  `(defconstant ,name (logior (ash ,element-count num-subtag-bits) ,subtag)))



(define-header double-float-header double-float.element-count subtag-double-float)



;;; We could possibly have a one-digit bignum header when dealing

;;; with "small bignums" in some bignum code.  Like other cases of

;;; non-normalized bignums, they should never escape from the lab.

(define-header one-digit-bignum-header 1 subtag-bignum)

(define-header two-digit-bignum-header 2 subtag-bignum)

(define-header three-digit-bignum-header 3 subtag-bignum)

(define-header four-digit-bignum-header 4 subtag-bignum)

(define-header five-digit-bignum-header 5 subtag-bignum)

(define-header symbol-header symbol.element-count subtag-symbol)

(define-header value-cell-header value-cell.element-count subtag-value-cell)

(define-header macptr-header macptr.element-count subtag-macptr)





(defconstant gf-code-size 18)



(defun %kernel-global (sym)

  (let* ((pos (position sym x86::*x86-kernel-globals* :test #'string=)))

    (if pos

      (- (+ fulltag-nil (* (1+ pos) node-size)))

      (error "Unknown kernel global : ~s ." sym))))



(defmacro kernel-global (sym)

  (let* ((pos (position sym x86::*x86-kernel-globals* :test #'string=)))

    (if pos

      (- (+ fulltag-nil (* (1+ pos) node-size)))

      (error "Unknown kernel global : ~s ." sym))))



(ccl::defenum (:prefix "KERNEL-IMPORT-" :start 0 :step node-size)

  fd-setsize-bytes

  do-fd-set

  do-fd-clr

  do-fd-is-set

  do-fd-zero

  MakeDataExecutable

  GetSharedLibrary

  FindSymbol

  malloc

  free

  wait-for-signal

  tcr-frame-ptr

  register-xmacptr-dispose-function

  open-debug-output

  get-r-debug

  restore-soft-stack-limit

  egc-control

  lisp-bug

  NewThread

  YieldToThread

  DisposeThread

  ThreadCurrentStackSpace

  usage-exit

  save-fp-context

  restore-fp-context

  put-altivec-registers

  get-altivec-registers

  new-semaphore

  wait-on-semaphore

  signal-semaphore

  destroy-semaphore

  new-recursive-lock

  lock-recursive-lock

  unlock-recursive-lock

  destroy-recursive-lock

  suspend-other-threads

  resume-other-threads

  suspend-tcr

  resume-tcr

  rwlock-new

  rwlock-destroy

  rwlock-rlock

  rwlock-wlock

  rwlock-unlock

  recursive-lock-trylock

  foreign-name-and-offset

  lisp-read

  lisp-write

  lisp-open

  lisp-fchmod

  lisp-lseek

  lisp-close

  lisp-ftruncate

  lisp-stat

  lisp-fstat

  lisp-futex

  lisp-opendir

  lisp-readdir

  lisp-closedir

  lisp-pipe

  lisp-gettimeofday

  lisp-sigexit

)



(defmacro nrs-offset (name)

  (let* ((pos (position name x86::*x86-nilreg-relative-symbols* :test #'eq)))

    (if pos (* (1- pos) symbol.size))))



(defparameter *x8664-target-uvector-subtags*

  `((:bignum . ,subtag-bignum)

    (:ratio . ,subtag-ratio)

    (:single-float . ,subtag-single-float)

    (:double-float . ,subtag-double-float)

    (:complex . ,subtag-complex  )

    (:symbol . ,subtag-symbol)

    (:function . ,subtag-function )

    (:xcode-vector . ,subtag-xcode-vector)

    (:macptr . ,subtag-macptr )

    (:catch-frame . ,subtag-catch-frame)

    (:struct . ,subtag-struct )    

    (:istruct . ,subtag-istruct )

    (:pool . ,subtag-pool )

    (:population . ,subtag-weak )

    (:hash-vector . ,subtag-hash-vector )

    (:package . ,subtag-package )

    (:value-cell . ,subtag-value-cell)

    (:instance . ,subtag-instance )

    (:lock . ,subtag-lock )

    (:basic-stream . ,subtag-basic-stream)

    (:slot-vector . ,subtag-slot-vector)

    (:simple-string . ,subtag-simple-base-string )

    (:bit-vector . ,subtag-bit-vector )

    (:signed-8-bit-vector . ,subtag-s8-vector )

    (:unsigned-8-bit-vector . ,subtag-u8-vector )

    (:signed-16-bit-vector . ,subtag-s16-vector )

    (:unsigned-16-bit-vector . ,subtag-u16-vector )

    (:signed-32-bit-vector . ,subtag-s32-vector )

    (:unsigned-32-bit-vector . ,subtag-u32-vector )

    (:signed-64-bit-vector . ,subtag-s64-vector)

    (:fixnum-vector . ,subtag-fixnum-vector)

    (:unsigned-64-bit-vector . ,subtag-u64-vector)    

    (:single-float-vector . ,subtag-single-float-vector)

    (:double-float-vector . ,subtag-double-float-vector )

    (:simple-vector . ,subtag-simple-vector )

    (:vector-header . ,subtag-vectorH)

    (:array-header . ,subtag-arrayH)))



;;; This should return NIL unless it's sure of how the indicated

;;; type would be represented (in particular, it should return

;;; NIL if the element type is unknown or unspecified at compile-time.

(defun x8664-array-type-name-from-ctype (ctype)

  (when (typep ctype 'ccl::array-ctype)

    (let* ((element-type (ccl::array-ctype-element-type ctype)))

      (typecase element-type

        (ccl::class-ctype

         (let* ((class (ccl::class-ctype-class element-type)))

           (if (or (eq class ccl::*character-class*)

                   (eq class ccl::*base-char-class*)

                   (eq class ccl::*standard-char-class*))

             :simple-string

             :simple-vector)))

        (ccl::numeric-ctype

         (if (eq (ccl::numeric-ctype-complexp element-type) :complex)

           :simple-vector

           (case (ccl::numeric-ctype-class element-type)

             (integer

              (let* ((low (ccl::numeric-ctype-low element-type))

                     (high (ccl::numeric-ctype-high element-type)))

                (cond ((or (null low) (null high))

                       :simple-vector)

                      ((and (>= low 0) (<= high 1))

                       :bit-vector)

                      ((and (>= low 0) (<= high 255))

                       :unsigned-8-bit-vector)

                      ((and (>= low 0) (<= high 65535))

                       :unsigned-16-bit-vector)

                      ((and (>= low 0) (<= high #xffffffff))

                       :unsigned-32-bit-vector)

                      ((and (>= low 0) (<= high #xffffffffffffffff))

                       :unsigned-64-bit-vector)

                      ((and (>= low -128) (<= high 127))

                       :signed-8-bit-vector)

                      ((and (>= low -32768) (<= high 32767))

                       :signed-16-bit-vector)

                      ((and (>= low (ash -1 31)) (<= high (1- (ash 1 31))))

                       :signed-32-bit-vector)

                      ((and (>= low target-most-negative-fixnum)

                            (<= high target-most-positive-fixnum))

                       :fixnum-vector)

                      ((and (>= low (ash -1 63)) (<= high (1- (ash 1 63))))

                       :signed-64-bit-vector)

                      (t :simple-vector))))

             (float

              (case (ccl::numeric-ctype-format element-type)

                ((double-float long-float) :double-float-vector)

                ((single-float short-float) :single-float-vector)

                (t :simple-vector)))

             (t :simple-vector))))

        (ccl::unknown-ctype)

        (ccl::named-ctype

         (if (eq element-type ccl::*universal-type*)

           :simple-vector))

        (t)))))



(defun x8664-misc-byte-count (subtag element-count)

  (declare (fixnum subtag))

  (if (logbitp (logand subtag fulltagmask)

               (logior (ash 1 fulltag-nodeheader-0)

                       (ash 1 fulltag-nodeheader-1)))

    (ash element-count 3)

    (case (logand subtag fulltagmask)

      (#.ivector-class-64-bit (ash element-count 3))

      (#.ivector-class-32-bit (ash element-count 2))

      (t

       (if (= subtag subtag-bit-vector)

         (ash (+ 7 element-count) -3)

         (if (>= subtag min-8-bit-ivector-subtag)

           element-count

           (ash element-count 1)))))))



(defparameter *x8664-subprims-shift* 3)

(defconstant x8664-subprims-base #x15000)





(declaim (special *x8664-subprims*))



;;; For now, nothing's nailed down and we don't say anything about

;;; registers clobbered.

(let* ((origin x8664-subprims-base)

       (step (ash 1 *x8664-subprims-shift*)))

  (flet ((define-x8664-subprim (name)

             (ccl::make-subprimitive-info :name (string name)

                                          :offset (prog1 origin

                                                    (incf origin step)))))

    (macrolet ((defx8664subprim (name)

                   `(define-x8664-subprim ',name)))

      (defparameter *x8664-subprims*

        (vector

         (defx8664subprim .SPjmpsym)

         (defx8664subprim .SPjmpnfn)

         (defx8664subprim .SPfuncall)

         (defx8664subprim .SPmkcatch1v)

         (defx8664subprim .SPmkunwind)

         (defx8664subprim .SPmkcatchmv)

         (defx8664subprim .SPthrow)

         (defx8664subprim .SPnthrowvalues)

         (defx8664subprim .SPnthrow1value)

         (defx8664subprim .SPbind)

         (defx8664subprim .SPbind-self)

         (defx8664subprim .SPbind-nil)

         (defx8664subprim .SPbind-self-boundp-check)

         (defx8664subprim .SPrplaca)

         (defx8664subprim .SPrplacd)

         (defx8664subprim .SPconslist)

         (defx8664subprim .SPconslist-star)

         (defx8664subprim .SPstkconslist)

         (defx8664subprim .SPstkconslist-star)

         (defx8664subprim .SPmkstackv)

         (defx8664subprim .SPsubtag-misc-ref)

         (defx8664subprim .SPsetqsym)

         (defx8664subprim .SPprogvsave)

         (defx8664subprim .SPstack-misc-alloc)

         (defx8664subprim .SPgvector)

         (defx8664subprim .SPnvalret)

         (defx8664subprim .SPmvpass)

         (defx8664subprim .SPrecover-values-for-mvcall)

         (defx8664subprim .SPnthvalue)

         (defx8664subprim .SPvalues)

         (defx8664subprim .SPdefault-optional-args)

         (defx8664subprim .SPopt-supplied-p)

         (defx8664subprim .SPheap-rest-arg)

         (defx8664subprim .SPreq-heap-rest-arg)

         (defx8664subprim .SPheap-cons-rest-arg)

         (defx8664subprim .SPsimple-keywords)

         (defx8664subprim .SPkeyword-args)

         (defx8664subprim .SPkeyword-bind)

         (defx8664subprim .SPffcall)

         (defx8664subprim .SParef2)

         (defx8664subprim .SPksignalerr)

         (defx8664subprim .SPstack-rest-arg)

         (defx8664subprim .SPreq-stack-rest-arg)

         (defx8664subprim .SPstack-cons-rest-arg)

         (defx8664subprim .SPpoweropen-callbackX)

         (defx8664subprim .SPcall-closure)

         (defx8664subprim .SPgetXlong)

         (defx8664subprim .SPspreadargz)

         (defx8664subprim .SPtfuncallgen)

         (defx8664subprim .SPtfuncallslide)

         (defx8664subprim .SPtfuncallvsp)

         (defx8664subprim .SPtcallsymgen)

         (defx8664subprim .SPtcallsymslide)

         (defx8664subprim .SPtcallsymvsp)

         (defx8664subprim .SPtcallnfngen)

         (defx8664subprim .SPtcallnfnslide)

         (defx8664subprim .SPtcallnfnvsp)

         (defx8664subprim .SPmisc-ref)

         (defx8664subprim .SPmisc-set)

         (defx8664subprim .SPstkconsyz)

         (defx8664subprim .SPstkvcell0)

         (defx8664subprim .SPstkvcellvsp)

         (defx8664subprim .SPmakestackblock)

         (defx8664subprim .SPmakestackblock0)

         (defx8664subprim .SPmakestacklist)

         (defx8664subprim .SPstkgvector)

         (defx8664subprim .SPmisc-alloc)

         (defx8664subprim .SPpoweropen-ffcallX)

         (defx8664subprim .SPgvset)

         (defx8664subprim .SPmacro-bind)

         (defx8664subprim .SPdestructuring-bind)

         (defx8664subprim .SPdestructuring-bind-inner)

         (defx8664subprim .SPrecover-values)

         (defx8664subprim .SPvpopargregs)

         (defx8664subprim .SPinteger-sign)

         (defx8664subprim .SPsubtag-misc-set)

         (defx8664subprim .SPspread-lexpr-z)

         (defx8664subprim .SPstore-node-conditional)

         (defx8664subprim .SPreset)

         (defx8664subprim .SPmvslide)

         (defx8664subprim .SPsave-values)

         (defx8664subprim .SPadd-values)

         (defx8664subprim .SPcallback)

         (defx8664subprim .SPmisc-alloc-init)

         (defx8664subprim .SPstack-misc-alloc-init)

         (defx8664subprim .SPset-hash-key)

         (defx8664subprim .SPaset2)

         (defx8664subprim .SPcallbuiltin)

         (defx8664subprim .SPcallbuiltin0)

         (defx8664subprim .SPcallbuiltin1)

         (defx8664subprim .SPcallbuiltin2)

         (defx8664subprim .SPcallbuiltin3)

         (defx8664subprim .SPpopj)

         (defx8664subprim .SPrestorefullcontext)

         (defx8664subprim .SPsavecontextvsp)

         (defx8664subprim .SPsavecontext0)

         (defx8664subprim .SPrestorecontext)

         (defx8664subprim .SPlexpr-entry)

         (defx8664subprim .SPpoweropen-syscall)

         (defx8664subprim .SPbuiltin-plus)

         (defx8664subprim .SPbuiltin-minus)

         (defx8664subprim .SPbuiltin-times)

         (defx8664subprim .SPbuiltin-div)

         (defx8664subprim .SPbuiltin-eq)

         (defx8664subprim .SPbuiltin-ne)

         (defx8664subprim .SPbuiltin-gt)

         (defx8664subprim .SPbuiltin-ge)

         (defx8664subprim .SPbuiltin-lt)

         (defx8664subprim .SPbuiltin-le)

         (defx8664subprim .SPbuiltin-eql)

         (defx8664subprim .SPbuiltin-length)

         (defx8664subprim .SPbuiltin-seqtype)

         (defx8664subprim .SPbuiltin-assq)

         (defx8664subprim .SPbuiltin-memq)

         (defx8664subprim .SPbuiltin-logbitp)

         (defx8664subprim .SPbuiltin-logior)

         (defx8664subprim .SPbuiltin-logand)

         (defx8664subprim .SPbuiltin-ash)

         (defx8664subprim .SPbuiltin-negate)

         (defx8664subprim .SPbuiltin-logxor)

         (defx8664subprim .SPbuiltin-aref1)

         (defx8664subprim .SPbuiltin-aset1)

         (defx8664subprim .SPbreakpoint)

         (defx8664subprim .SPeabi-ff-call)

         (defx8664subprim .SPeabi-callback)

         (defx8664subprim .SPsyscall)

         (defx8664subprim .SPgetu64)

         (defx8664subprim .SPgets64)

         (defx8664subprim .SPmakeu64)

         (defx8664subprim .SPmakes64)

         (defx8664subprim .SPspecref)

         (defx8664subprim .SPspecset)

         (defx8664subprim .SPspecrefcheck)

         (defx8664subprim .SPrestoreintlevel)

         (defx8664subprim .SPmakes32)

         (defx8664subprim .SPmakeu32)

         (defx8664subprim .SPgets32)

         (defx8664subprim .SPgetu32)

         (defx8664subprim .SPfix-overflow)

         (defx8664subprim .SPmvpasssym)

         (defx8664subprim .SParef3)

         (defx8664subprim .SPaset3)

         (defx8664subprim .SPffcall-return-registers)

         (defx8664subprim .SPunused-5)

         (defx8664subprim .SPset-hash-key-conditional)

         (defx8664subprim .SPunbind-interrupt-level)

         (defx8664subprim .SPunbind)

         (defx8664subprim .SPunbind-n)

         (defx8664subprim .SPunbind-to)

         (defx8664subprim .SPbind-interrupt-level-m1)

         (defx8664subprim .SPbind-interrupt-level)

         (defx8664subprim .SPbind-interrupt-level-0)

         (defx8664subprim .SPprogvrestore)

         (defx8664subprim .SPnmkunwind)

         

         )))))



(defparameter *x8664-target-arch*

  (arch::make-target-arch :name :x8664

                          :lisp-node-size 8

                          :nil-value canonical-nil-value

                          :fixnum-shift fixnumshift

                          :most-positive-fixnum (1- (ash 1 (1- (- 64 fixnumshift))))

                          :most-negative-fixnum (- (ash 1 (1- (- 64 fixnumshift))))

                          :misc-data-offset misc-data-offset

                          :misc-dfloat-offset misc-dfloat-offset

                          :nbits-in-word 64

                          :ntagbits 4

                          :nlisptagbits 3

                          :uvector-subtags *x8664-target-uvector-subtags*

                          :max-64-bit-constant-index max-64-bit-constant-index

                          :max-32-bit-constant-index max-32-bit-constant-index

                          :max-16-bit-constant-index max-16-bit-constant-index

                          :max-8-bit-constant-index max-8-bit-constant-index

                          :max-1-bit-constant-index max-1-bit-constant-index

                          :word-shift 3

                          :code-vector-prefix nil

                          :gvector-types '(:ratio :complex :symbol :function

                                           :catch-frame :struct :istruct

                                           :pool :population :hash-vector

                                           :package :value-cell :instance

                                           :lock :slot-vector

                                           :simple-vector)

                          :1-bit-ivector-types '(:bit-vector)

                          :8-bit-ivector-types '(:signed-8-bit-vector

                                                 :unsigned-8-bit-vector)

                          :16-bit-ivector-types '(:signed-16-bit-vector

                                                  :unsigned-16-bit-vector)

                          :32-bit-ivector-types '(:signed-32-bit-vector

                                                  :unsigned-32-bit-vector

                                                  :single-float-vector

                                                  :double-float

                                                  :bignum

                                                  :simple-string)

                          :64-bit-ivector-types '(:double-float-vector

                                                  :unsigned-64-bit-vector

                                                  :signed-64-bit-vector

                                                  :fixnum-vector)

                          :array-type-name-from-ctype-function

                          #'x8664-array-type-name-from-ctype

                          :package-name "X8664"

                          :t-offset t-offset

                          :array-data-size-function #'x8664-misc-byte-count

                          :numeric-type-name-to-typecode-function

                          #'(lambda (type-name)

                              (ecase type-name

                                (fixnum tag-fixnum)

                                (bignum subtag-bignum)

                                ((short-float single-float) subtag-single-float)

                                ((long-float double-float) subtag-double-float)

                                (ratio subtag-ratio)

                                (complex subtag-complex)))

                          :subprims-base x8664-subprims-base

                          :subprims-shift x8664::*x8664-subprims-shift*

                          :subprims-table x8664::*x8664-subprims*

                          :primitive->subprims `(((0 . 23) . ,(ccl::%subprim-name->offset '.SPbuiltin-plus x8664::*x8664-subprims*)))

                          :unbound-marker-value unbound-marker

                          :slot-unbound-marker-value slot-unbound-marker

                          :fixnum-tag tag-fixnum

                          :single-float-tag subtag-single-float

                          :single-float-tag-is-subtag nil

                          :double-float-tag subtag-double-float

                          :cons-tag fulltag-cons

                          :null-tag fulltag-nil

                          :symbol-tag fulltag-symbol

                          :symbol-tag-is-subtag nil

                          :function-tag fulltag-function

                          :function-tag-is-subtag nil

                          :big-endian nil

                          :misc-subtag-offset misc-subtag-offset

                          :car-offset cons.car

                          :cdr-offset cons.cdr

                          :subtag-char subtag-character

                          :charcode-shift charcode-shift

                          :fulltagmask fulltagmask

                          :fulltag-misc fulltag-misc

                          :char-code-limit #x110000

                          ))



;;; arch macros

(defmacro defx8664archmacro (name lambda-list &body body)

  `(arch::defarchmacro :x8664 ,name ,lambda-list ,@body))



(defx8664archmacro ccl::%make-sfloat ()

  (error "~s shouldn't be used in code targeting :X8664" 'ccl::%make-sfloat))



(defx8664archmacro ccl::%make-dfloat ()

  `(ccl::%alloc-misc x8664::double-float.element-count x8664::subtag-double-float))



(defx8664archmacro ccl::%numerator (x)

  `(ccl::%svref ,x x8664::ratio.numer-cell))



(defx8664archmacro ccl::%denominator (x)

  `(ccl::%svref ,x x8664::ratio.denom-cell))



(defx8664archmacro ccl::%realpart (x)

  `(ccl::%svref ,x x8664::complex.realpart-cell))

                    

(defx8664archmacro ccl::%imagpart (x)

  `(ccl::%svref ,x x8664::complex.imagpart-cell))



;;;

(defx8664archmacro ccl::%get-single-float-from-double-ptr (ptr offset)

 `(ccl::%double-float->short-float (ccl::%get-double-float ,ptr ,offset)))



(defx8664archmacro ccl::codevec-header-p (word)

  (declare (ignore word))

  (error "~s makes no sense on :X8664" 'ccl::codevec-header-p))



;;;



(defx8664archmacro ccl::immediate-p-macro (thing)

  (let* ((tag (gensym)))

    `(let* ((,tag (ccl::lisptag ,thing)))

      (declare (type (unsigned-byte 3) ,tag))

      (logbitp ,tag (logior (ash 1 x8664::tag-fixnum)

                    (ash 1 x8664::tag-imm-0)

                    (ash 1 x8664::tag-imm-1))))))



(defx8664archmacro ccl::hashed-by-identity (thing)

  (let* ((typecode (gensym)))

    `(let* ((,typecode (ccl::typecode ,thing)))

      (declare (fixnum ,typecode))

      (or (= ,typecode  x8664::subtag-instance)

       (and (<= ,typecode x8664::fulltag-symbol)

        (logbitp (the (integer 0 #.x8664::fulltag-symbol) ,typecode)

                 (logior (ash 1 x8664::tag-fixnum)

                         (ash 1 x8664::tag-imm-0)

                         (ash 1 x8664::tag-imm-1)

                         (ash 1 x8664::fulltag-symbol))))))))



;;;

(defx8664archmacro ccl::%get-kernel-global (name)

  `(ccl::%fixnum-ref 0 (+ ,(ccl::target-nil-value)

                        ,(%kernel-global

                         (if (ccl::quoted-form-p name)

                           (cadr name)

                           name)))))



(defx8664archmacro ccl::%get-kernel-global-ptr (name dest)

  `(ccl::%setf-macptr

    ,dest

    (ccl::%int-to-ptr (ccl::%fixnum-ref-natural 0 (+ ,(ccl::target-nil-value)

                                 ,(%kernel-global

                                   (if (ccl::quoted-form-p name)

                                     (cadr name)

                                     name)))))))



(defx8664archmacro ccl::%target-kernel-global (name)

  `(x8664::%kernel-global ,name))



(defx8664archmacro ccl::lfun-vector (fun)

  `(ccl::%function-to-function-vector ,fun))



(defx8664archmacro ccl::lfun-vector-lfun (lfv)

  `(ccl::%function-vector-to-function ,lfv))



(defx8664archmacro ccl::area-code ()

  area.code)



(defx8664archmacro ccl::area-succ ()

  area.succ)



(defx8664archmacro ccl::nth-immediate (f i)

  `(ccl::%nth-immediate ,f (the fixnum (- (the fixnum ,i) 1))))



(defx8664archmacro ccl::set-nth-immediate (f i new)

  `(ccl::%set-nth-immediate ,f (the fixnum (- (the fixnum ,i) 1)) ,new))



(defx8664archmacro ccl::symptr->symvector (s)

  `(ccl::%symptr->symvector ,s))



(defx8664archmacro ccl::symvector->symptr (s)

  `(ccl::%symvector->symptr ,s))



(defx8664archmacro ccl::function-to-function-vector (f)

  `(ccl::%function-to-function-vector ,f))



(defx8664archmacro ccl::function-vector-to-function (v)

  `(ccl::%function-vector-to-function ,v))



(defx8664archmacro ccl::with-ffcall-results ((buf) &body body)

  ;; Reserve space for rax,rdx,xmm0,xmm1 only.

  (let* ((size (+ (* 2 8) (* 2 8))))

    `(ccl::%stack-block ((,buf ,size :clear t))

      ,@body)))



;;; an (lea (@ disp (% rip)) (% fn)) instruction following a tagged

;;; return address helps the runtime map from the return address to

;;; the containing function.  That instuction is 7 bytes long: 3

;;; bytes of code followed by 4 bytes of displacement.  The constant

;;; part of that - assuming that FN is R13 - looks like #x4c #x8d #x2d.



(defconstant recover-fn-from-rip-length 7)

(defconstant recover-fn-from-rip-disp-offset 3)

(defconstant recover-fn-from-rip-word0 #x8d4c)

(defconstant recover-fn-from-rip-byte2 #x2d)



;;; For backtrace: the relative PC of an argument-check trap

;;; must be less than or equal to this value.  (Because of

;;; the way that we do "anchored" UUOs, it should always be =.)



(defconstant arg-check-trap-pc-limit 7)



(provide "X8664-ARCH")