path: root/cpu/cris.cpu

; CRIS CPU description.  -*- Scheme -*-
;
; Copyright 2003, 2004 Free Software Foundation, Inc.
;
; Contributed by Axis Communications AB.
;
; This file is part of the GNU Binutils.
;
; This program is free software; you can redistribute it and/or modify
; it under the terms of the GNU General Public License as published by
; the Free Software Foundation; either version 2 of the License, or
; (at your option) any later version.
;
; This program is distributed in the hope that it will be useful,
; but WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
; GNU General Public License for more details.
;
; You should have received a copy of the GNU General Public License
; along with this program; if not, write to the Free Software
; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

(include "simplify.inc")

;;;;;;;;;;;;;;;;;; -pmacro (generic ones)

(define-pmacro (.car2 l) (.apply (.pmacro (a b) a) l))
(define-pmacro (.cadr2 l) (.apply (.pmacro (a b) b) l))
(define-pmacro (SI-ext x) "How to sign-extend a dword to dword (a nop)" x)
(define-pmacro (HI-ext x) "How to sign-extend a word to dword" (ext SI x))
(define-pmacro (QI-ext x) "How to sign-extend a byte to dword" (ext SI x))
(define-pmacro (SI-zext x) "How to zero-extend a dword to dword (a nop)" x)
(define-pmacro (HI-zext x) "How to zero-extend a word to dword" (zext SI x))
(define-pmacro (QI-zext x) "How to zero-extend a byte to dword" (zext SI x))
(define-pmacro
  (define-pmacro-map x)
  "On a list ((x0 y0) .. (xN yN)), 0 <= m <= N, (define-pmacro xm ym)"
  (.splice
   begin
   (.unsplice
    (.map
     (.pmacro (l) (.apply (.pmacro (xm ym) (define-pmacro xm ym)) l)) x)))
)

;;;;;;;;;;;;;;;;;; -arch -isa -cpu -model

(define-arch
  (name cris)
  (comment "Axis Communications CRIS")
  (default-alignment unaligned)
  (insn-lsb0? #t)
  (machs crisv0 crisv3 crisv8 crisv10 crisv32)
  (isas cris)
)

(define-isa
  (name cris)
  (base-insn-bitsize 16)
  (liw-insns 1)
  (parallel-insns 1)
)

(define-pmacro
  (define-cpu-cris x-suffix x-comment)
  "Define a CRIS CPU family"
  (define-cpu
    (name (.sym cris x-suffix f))
    (comment x-comment)
    (endian little)
    ; CGEN-FIXME: Should be deduced from the default?
    (word-bitsize 32)
    (file-transform (.str x-suffix))
  )
)

; Useful when there's a need to iterate over all models.
(define-pmacro (cris-cpu-model-numbers)
  "List of CRIS CPU model numbers (version register contents)"
  (0 3 8 10 32)
)

(define-pmacro (cris-cpu-models)
  "List of CRIS CPU model names"
  (.map (.pmacro (n) (.sym v n)) (cris-cpu-model-numbers))
)

; Mapping from model name to number.
(define-pmacro-map
  (.map (.pmacro (n) ((.sym v n -number) n))
	(cris-cpu-model-numbers)))

; FIXME: Rationalize these rules.
; CPU names must be distinct from the architecture name and machine names.
; The "b" suffix stands for "base" and is the convention.
; The "f" suffix stands for "family" and is the convention.
; We ignore the "b" convention, partly because v0 isn't really a "base", at
; least not for some aspects of v32.
(define-cpu-cris v0 "CRIS base family")
(define-cpu-cris v3 "CRIS v3 family")
(define-cpu-cris v8 "CRIS v8 family")
(define-cpu-cris v10 "CRIS v10 family")
(define-cpu-cris v32 "CRIS v32 family")

(define-pmacro MACH-PRE-V32 (MACH crisv0,crisv3,crisv8,crisv10))
(define-pmacro MACH-V3-UP (MACH crisv3,crisv8,crisv10,crisv32))
(define-pmacro MACH-V32 (MACH crisv32))
(define-pmacro MACH-PC MACH-PRE-V32)
(define-pmacro MACH-ACR MACH-V32)
(define-pmacro MACH-BRANCH-OFFSET-AT-INSN MACH-V32)
(define-pmacro MACH-BRANCH-OFFSET-AFTER-INSN MACH-PRE-V32)

(define-pmacro
  current-mach-is-v32
  "Whether the generated code is for V32.  See comment at h-v32."
  (reg h-v32)
)

(define-pmacro (define-mach-cris x-suffix x-comment x-name)
  "Define a CRIS mach"
  (define-mach
    (name (.sym cris x-suffix))
    ; They're all called "cris" in bfd.  Watch out for breakages for some
    ; uses.
    (bfd-name x-name)
    (comment x-comment)
    (cpu (.sym cris x-suffix f)))
)

(define-mach-cris v0 "Generic CRIS v0 CPU, ETRAX 1 .. 3" "cris")
(define-mach-cris v3 "Generic CRIS v3 CPU, ETRAX 4" "cris")
(define-mach-cris v8 "Generic CRIS v8 CPU, ETRAX 100" "cris")
(define-mach-cris v10 "Generic CRIS v10 CPU, ETRAX 100 LX" "cris")
(define-mach-cris v32 "Generic CRIS v32 CPU, ETRAX FS" "crisv32")

(define-pmacro (define-model-simplecris x-name x-comment)
  "Define a simple CRIS model"
  (define-model
    (name (.sym cris x-name))
    (comment x-comment)
    (mach (.sym cris x-name))

    (unit u-exec "Execution Unit" () 1 1 () () () ())
    (unit u-mem "Memory Unit" () 1 1 () () () ())

    (unit u-const16 "Fetch 16-bit operand" () 1 1 () () () ())
    (unit u-const32 "Fetch 32-bit operand" () 1 1
	  () () () ())
    ; Used in special-case insn, for example arithmetic with PC destination.
    (unit u-stall "Stall unit" () 1 1 () () () ())
    (unit u-skip4 "Skip 4 bytes" () 1 1 () () () ())
    (unit u-multiply "Multiply Unit" () 1 1 ((MACH crisv10)) () () ())
    (unit u-movem "Movem Unit" () 1 1 ()
	  ((Rd INT -1))
	  () ()))
)

(define-model-simplecris v0 "Model of CRIS v0, ETRAX 1 .. 3")
(define-model-simplecris v3 "Model of CRIS v3, ETRAX 4")
(define-model-simplecris v8 "Model of CRIS v8, ETRAX 100")
(define-model-simplecris v10 "Model of CRIS v10, ETRAX 100 LX")

; For some reason, we get an error:
;  Generating arch.h ...
;  ERROR: In procedure vector-ref:
;  ERROR: Wrong type argument in position 1: ()
; if we include timings for machs that we don't generate sims for.
; Last checked: CVS as of 2004-11-18.
; CGEN-FIXME: Looks like another CGEN bug.  When it's fixed (or when
; generating sims for v0, v3 or v8), add 0, 3 and 8 to
; simplecris-timing-models.  But before that, simplecris-timing-x has to
; be rewritten to work on a multiple-element-list, not assume a single
; element.  (A change which seems likely to depend on lexical scoping for
; macros to be introduced: try the obvious implementation.)
(define-pmacro simplecris-timing-models (10))
(define-pmacro (simplecris-common-timing x-units)
  "Make timing models, using x-units for all simplecris-timing-models"
  ; CGEN-FIXME: Another CGEN bug: the part (.unsplice (10)) will remain
  ; unexpanded in (.sym crisv (.unsplice (10)) if we write this as
  ; ((.splice (.sym crisv (.unsplice simplecris-timing-models))
  ;	      (.unsplice x-units)))
  ((.splice (.sym crisv (.apply (.pmacro (x) x) simplecris-timing-models))
  	    (.unsplice x-units)))
)

(define-pmacro-map
  (
   ; Timing for memory instructions running on a simple cris model.
   ((simplecris-mem-timing)	(simplecris-common-timing
				 ((unit u-mem) (unit u-exec))))
   ; Timing for movem instructions running on a simple cris model.
   ((simplecris-movem-timing)	(simplecris-common-timing
				 ((unit u-movem) (unit u-exec))))
   ; Similar, for an 8- or 16-bit constant ([PC+]) operand.
   ((simplecris-const-timing-HI)
				(simplecris-common-timing
				 ((unit u-const16) (unit u-exec))))
   ; Similar, for a 32-bit constant ([PC+]) operand.
   ((simplecris-const-timing-SI)
				(simplecris-common-timing
				 ((unit u-const32) (unit u-exec))))
   ; Similar, no particular operand.
   ((simplecris-timing)		(simplecris-common-timing
				 ((unit u-exec)))))
)

(define-model
  (name crisv32)
  (comment "Model of CRISv32")
  (mach crisv32)

  (state
    ; Bitmask of h-gr register (0..15) and h-sr register (17..31)
    ; modified by 3rd previous insn, updated by the u-exec unit.
    ; Because there's no need to mark writes to special registers BZ and
    ; WZ, bit 16 is for jump mark and bit 20 for memory-write mark.
    (prev-prev-prev-modf-regs UINT)

    ; Ditto for the 2nd previous insn.
    (prev-prev-modf-regs UINT)

    ; Ditto for the previous insn.
    (prev-modf-regs UINT)

    ; Bit-mask for regs modified by the current insn, propagated to
    ; prev-modf-regs.
    (modf-regs UINT)

    ; Registers loaded by movem are not forwarded to the execution
    ; stage, so we need to insert stall-cycles for ordinary insns
    ; accessing such registers.  In addition to the *modf-regs
    ; above, these are set to tell *ordinary* insns which registers
    ; are inaccessible.

    (prev-prev-prev-movem-dest-regs UINT)

    ; Ditto for the 2nd previous insn.
    (prev-prev-movem-dest-regs UINT)

    ; Ditto for the previous insn.
    (prev-movem-dest-regs UINT)

    ; Bit-mask for regs modified by the current insn, propagated to
    ; prev-movem-dest-regs.
    (movem-dest-regs UINT))

  ; It seems this pipeline description isn't used at all; this is just
  ; for show.
  ; Noteworthy is the placement of the memory stage before the execute stage.
  (pipeline all "" () ((fetch) (decode) (memory) (execute) (writeback)))

  ; Units that contribute only a constant pipeline delay are not included.
  (unit u-mem "Memory Unit" () 1 1 ()
	((Rs INT -1))
	() ())

  ; Artificial units for read/write-related hazard accounting.
  (unit u-mem-r "Memory Unit Read" () 1 1 () () () ())
  (unit u-mem-w "Memory Unit Write" () 1 1 () () () ())

  (unit u-movem-rtom "Movem-to-memory Unit" () 1 1 ()
	((Rs INT -1) (Rd INT -1))
	() ())
  (unit u-movem-mtor "Movem-to-register Unit" () 1 1 ()
	((Rs INT -1) (Rd INT -1))
	() ())
  (unit u-multiply "Multiply Unit" () 1 1 ()
	((Rs INT -1) (Rd INT -1))
	() ())
  (unit u-branch "Branch Unit" () 1 1 ()
	()
	() ())
  (unit u-jump-r "Jump-to-register Unit" () 1 1 ()
	((Rs INT -1))
	() ())
  (unit u-jump-sr "Jump-to-special-register Unit" () 1 1 ()
	((Ps INT -1))
	() ())
  (unit u-jump "JAS/BAS Unit, saving PC" () 1 1 ()
	()
	((Pd INT -1)) ())

  ; To keep track of PC; not really functional units.
  (unit u-const16 "Fetch 16-bit operand" () 1 1 () () () ())
  (unit u-const32 "Fetch 32-bit operand" () 1 1 () () () ())
  (unit u-skip4 "Skip 4 bytes" () 1 1 () () () ())

  ; For v32, we need to keep track of inputs (for movem destination
  ; cycle penalties) and output (for e.g. memory source and jump
  ; source cycle penalties).
  (unit u-exec "Execution Unit" () 1 1 ()
	((Rd INT -1) (Rs INT -1))
	((Rd INT -1))
	())

  ; Special case of u-exec for movem: don't treat Rd as an incoming
  ; parameter.
  (unit u-exec-movem "Execution Unit" () 1 1 ()
	((Rs INT -1))
	((Rd INT -1))
	())

  ; Special case of u-exec when the destination is a special
  ; register.
  (unit u-exec-to-sr "Execution Unit" () 1 1 ()
	((Rs INT -1))
	((Pd INT -1)) ())
)

(define-pmacro (crisv32-timing-destreg d)
  "Timing for instructions running on a crisv32 model"
  ((crisv32
    (.splice unit u-exec (.unsplice d))))
)
(define-pmacro (crisv32-timing) (crisv32-timing-destreg ()))

(define-pmacro (cris-timing-Rd-sfield)
  (crisv32-timing-destreg ((out Rd Rd-sfield)))
)

(define-pmacro (crisv32-timing-c-HI)
  ((crisv32 (unit u-const16) (unit u-exec)))
)

(define-pmacro-map
  ((crisv32-timing-c-QI crisv32-timing-c-HI)
   ((crisv32-timing-c-SI) ((crisv32 (unit u-const32) (unit u-exec))))
   ((crisv32-timing-c-sr-SI) ((crisv32 (unit u-const32) (unit u-exec-to-sr))))
   ((crisv32-reg-sr-timing) ((crisv32 (unit u-exec-to-sr))))
   ((crisv32-mem-sr-timing)
    ((crisv32 (unit u-mem) (unit u-mem-r) (unit u-exec-to-sr))))
   ((crisv32-mem-timing) ((crisv32 (unit u-mem) (unit u-mem-r) (unit u-exec))))
   ((crisv32-mem-write-timing) ((crisv32 (unit u-mem) (unit u-exec) (unit u-mem-w)))))
)

(define-pmacro-map
  (
   ; Timing for instructions using memory operands.
   ((cris-mem-timing)		(.splice (.unsplice (simplecris-mem-timing))
					 (.unsplice (crisv32-mem-timing))))
  ; Timing for instructions using memory operands.
   ((cris-mem-write-timing)	(.splice
				 (.unsplice (simplecris-mem-timing))
				 (.unsplice (crisv32-mem-write-timing))))
   ; Timing for moves from general register to special register.
   ((cris-reg-sr-timing)	(.splice (.unsplice (simplecris-timing))
					 (.unsplice (crisv32-reg-sr-timing))))
   ; Timing for moves from memory to special register.
   ((cris-mem-sr-timing)	(.splice (.unsplice (simplecris-mem-timing))
					 (.unsplice (crisv32-mem-sr-timing))))
   ; Timing for non-mul, non-memory, non-special-register, 16-bit instructions.
   ((cris-timing)		(.splice (.unsplice (simplecris-timing))
					 (.unsplice (crisv32-timing))))
   ; Timing for instructions with 8- or 16-bit constant operand ([PC+]).
   ((cris-timing-const-HI)	(.splice
				 (.unsplice (simplecris-const-timing-HI))
				 (.unsplice (crisv32-timing-c-HI))))
   ; Timing for instructions with a 32-bit constant operand ([PC+]).
   ((cris-timing-const-SI)	(.splice
				 (.unsplice (simplecris-const-timing-SI))
				 (.unsplice (crisv32-timing-c-SI))))
   ; Like cris-timing-const-SI, but destination special register.
   ((cris-timing-const-sr-SI)	(.splice
				 (.unsplice (simplecris-const-timing-SI))
				 (.unsplice (crisv32-timing-c-sr-SI))))
   ; Like cris-timing-const-HI, but destination special register.
   ((cris-timing-const-sr-HI)	(.splice
				 (.unsplice (simplecris-const-timing-HI))
				 (.unsplice (crisv32-timing-c-sr-SI)))))
)

(define-pmacro cris-timing-const-QI cris-timing-const-HI)
(define-pmacro cris-timing-const-sr-QI cris-timing-const-sr-HI)

(define-pmacro (simplecris-common-specregs)
  "The common special registers in pre-v32 models."
  ((QI 0) (QI 1) (HI 4) (HI 5)
   (SI 8) (SI 9) (SI 10) (SI 11) (SI 12) (SI 13))
)

(define-pmacro (cris-implemented-specregs-v0)
  "Special registers in v0 and their sizes"
  (.splice (.unsplice (simplecris-common-specregs)) (HI 6) (HI 7))
)
(define-pmacro
  cris-implemented-specregs-const-v0
  cris-implemented-specregs-v0
)

(define-pmacro (cris-implemented-specregs-v3)
  "Special registers in v3 and their sizes"
  (.splice (.unsplice (cris-implemented-specregs-v0)) (SI 14))
)
(define-pmacro
  cris-implemented-specregs-const-v3
  cris-implemented-specregs-v3
)

(define-pmacro (cris-implemented-specregs-v8)
  "Special registers in v8 and their sizes"
  (.splice (.unsplice (simplecris-common-specregs)) (SI 14))
)
(define-pmacro
  cris-implemented-specregs-const-v8
  cris-implemented-specregs-v8
)

(define-pmacro (cris-implemented-specregs-v10)
  "Special registers in v10 and their sizes"
  (.splice (.unsplice (simplecris-common-specregs)) (SI 7) (SI 14) (SI 15))
)
(define-pmacro
  cris-implemented-specregs-const-v10
  cris-implemented-specregs-v10
)

(define-pmacro (cris-implemented-specregs-v32)
  "Special registers in v32 and their sizes"
  ((QI 0) (QI 1) (QI 2) (QI 3) (HI 4)
   (SI 5) (SI 6) (SI 7) (SI 8) (SI 9)
   (SI 10) (SI 11) (SI 12) (SI 13) (SI 14) (SI 15))
)
; For v32, all special register operations on constants (that is,
; move) take 32-bit operands, not the real size of the register, as in
; other move operations.
(define-pmacro (cris-implemented-specregs-const-v32)
  (.map (.pmacro (regno) (SI regno)) (.iota 16))
)

(define-pmacro cris-swap-codes
  "CRIS Swap codes in numeric order (no zero)"
  (   r  b  br  w  wr  wb  wbr
   n nr nb nbr nw nwr nwb nwbr)
)

(define-pmacro cris-flagnames
  "CRIS flag field values, dest and src fields concatenated"
  (c v z n x i u p) ; ... b m for pre-v32
)

(define-pmacro-map
  ; Bitnumber for each respective flag.
  (.map (.pmacro (x num) ((.sym x -bitnumber) num))
	cris-flagnames (.iota 8))
)

; I give up.  Here's a perl-script to get the values I want for this macro
; (not working along list principles, though).  You can run this region.
; perl -e '$x = "cvznxiup"; for ($i = 0; $i < 256; $i++) { $s = "";
;  for ($j = 0; $j < 8; $j++) { if ($i & (1 << $j)) {
; $s .= substr ($x, $j, 1);}}
; printf ("%s%s", $s eq "" ? "_" : $s, (($i + 1) % 8) == 0 ? "\n   " : " "); }'
(define-pmacro cris-flag-combinations
  "Combinations of flags in numeric order"
  (_ c v cv z cz vz cvz
   n cn vn cvn zn czn vzn cvzn
   x cx vx cvx zx czx vzx cvzx
   nx cnx vnx cvnx znx cznx vznx cvznx
   i ci vi cvi zi czi vzi cvzi
   ni cni vni cvni zni czni vzni cvzni
   xi cxi vxi cvxi zxi czxi vzxi cvzxi
   nxi cnxi vnxi cvnxi znxi cznxi vznxi cvznxi
   u cu vu cvu zu czu vzu cvzu
   nu cnu vnu cvnu znu cznu vznu cvznu
   xu cxu vxu cvxu zxu czxu vzxu cvzxu
   nxu cnxu vnxu cvnxu znxu cznxu vznxu cvznxu
   iu ciu viu cviu ziu cziu vziu cvziu
   niu cniu vniu cvniu zniu czniu vzniu cvzniu
   xiu cxiu vxiu cvxiu zxiu czxiu vzxiu cvzxiu
   nxiu cnxiu vnxiu cvnxiu znxiu cznxiu vznxiu cvznxiu
   p cp vp cvp zp czp vzp cvzp
   np cnp vnp cvnp znp cznp vznp cvznp
   xp cxp vxp cvxp zxp czxp vzxp cvzxp
   nxp cnxp vnxp cvnxp znxp cznxp vznxp cvznxp
   ip cip vip cvip zip czip vzip cvzip
   nip cnip vnip cvnip znip cznip vznip cvznip
   xip cxip vxip cvxip zxip czxip vzxip cvzxip
   nxip cnxip vnxip cvnxip znxip cznxip vznxip cvznxip
   up cup vup cvup zup czup vzup cvzup
   nup cnup vnup cvnup znup cznup vznup cvznup
   xup cxup vxup cvxup zxup czxup vzxup cvzxup
   nxup cnxup vnxup cvnxup znxup cznxup vznxup cvznxup
   iup ciup viup cviup ziup cziup vziup cvziup
   niup cniup vniup cvniup zniup czniup vzniup cvzniup
   xiup cxiup vxiup cvxiup zxiup czxiup vzxiup cvzxiup
   nxiup cnxiup vnxiup cvnxiup znxiup cznxiup vznxiup cvznxiup
  )
)

(define-pmacro cc-condition (not cbit))
(define-pmacro cs-condition cbit)
(define-pmacro ne-condition (not zbit))
(define-pmacro eq-condition zbit)
(define-pmacro vc-condition (not vbit))
(define-pmacro vs-condition vbit)
(define-pmacro pl-condition (not nbit))
(define-pmacro mi-condition nbit)
(define-pmacro ls-condition (or cbit zbit))
(define-pmacro hi-condition (not (or cbit zbit)))
(define-pmacro ge-condition (not (xor vbit nbit)))
(define-pmacro lt-condition (xor vbit nbit))
(define-pmacro gt-condition (not (or (xor vbit nbit) zbit)))
(define-pmacro le-condition (or (xor vbit nbit) zbit))
(define-pmacro a-condition 1)

; FIXME: define this properly for v10 and pre-v10.
(define-pmacro wf-condition pbit)

(define-pmacro (cris-condition condno)
  "Return condition state for condition number CONDNO"
  (sequence
    BI
    ((SI tmpcond) (BI condres))
    (set tmpcond condno)
     (.splice
      cond
      (.unsplice
       (.map
	(.pmacro
	 (condn condc)
	 ((eq tmpcond condn) (set condres (.sym condc -condition))))
	(.iota 16)
	cris-condition-codes)))
     condres)
)

;;;;;;;;;;;;;;;;;; -keyword

; General registers.
(define-pmacro (cris-general-gregs)
  (.splice (SP 14) (.unsplice (.map (.pmacro (n) ((.sym R n) n)) (.iota 15))))
)

; Can't keep more than one gr-names definition at the same time;
; generated enum declarations in sim/cris/cris-desc.h will collide.
; FIXME: (include "different-mach-parts")

(define-keyword
  (name gr-names-pcreg)
  (attrs MACH-PC)
  (print-name h-gr-real-pc)
  ; Put PC first so it is preferred over r15.
  (.splice values (PC 15) (.unsplice (cris-general-gregs)))
)

(define-keyword
  (name gr-names-acr)
  (attrs MACH-ACR)
  ; The print-name directive will control the enum prefix.  With the
  ; arguably more appropriate h-gr-v32 or h-gr-acr, we'd get names like
  ; H_GR_ACR_R0 instead of H_GR_R0.  Since we have to choose something for
  ; unprefixed names, we use the CRISv32 names.  FIXME: All users should
  ; change to use H_GR_V32_R0 (etc.), then change this to h-gr-v32.
  (print-name h-gr)
  ; Put ACR first so it is preferred over r15.
  (.splice values (ACR 15) (.unsplice (cris-general-gregs)))
)

(define-keyword
  (name gr-names-v32)
  (attrs MACH-V32)
  ; In preparation for implementing the FIXME above.
  (print-name h-gr-v32)
  ; Put ACR first so it is preferred over r15.
  (.splice values (ACR 15) (.unsplice (cris-general-gregs)))
)

; Special registers with names common to all.
(define-pmacro (cris-general-pregs)
  (.splice
   (VR 1)
   (SRP 11)
   (.unsplice (.map (.pmacro (n) ((.sym P n) n)) (.iota 15))))
)

(define-keyword
  (name p-names-v10)
  (attrs MACH-PRE-V32)
  (print-name h-sr-pre-v32)
  (.splice
   values
   (CCR 5)
   (MOF 7)
   (IBR 9)
   (IRP 10)
   (BAR 12)
   (DCCR 13)
   (BRP 14)
   (USP 15)
   (.unsplice (cris-general-pregs)))
)

(define-keyword
  (name p-names-v32)
  (attrs MACH-V32)
  ; See comment for gr-names-acr.
  (print-name h-sr)
  (.splice
   values
   (BZ 0)
   (PID 2)
   (SRS 3)
   (WZ 4)
   (EXS 5)
   (EDA 6)
   (MOF 7)
   (DZ 8)
   (EBP 9)
   (ERP 10)
   (NRP 12)
   (CCS 13)
   (USP 14)
   (SPC 15)
   (.unsplice (cris-general-pregs)))
)

; Similarly as for h-gr-v32, in preparation.
(define-keyword
  (name p-names-v32-x)
  (attrs MACH-V32)
  ; See comment for gr-names-acr.
  (print-name h-sr-v32)
  (.splice
   values
   (BZ 0)
   (PID 2)
   (SRS 3)
   (WZ 4)
   (EXS 5)
   (EDA 6)
   (MOF 7)
   (DZ 8)
   (EBP 9)
   (ERP 10)
   (NRP 12)
   (CCS 13)
   (USP 14)
   (SPC 15)
   (.unsplice (cris-general-pregs)))
)

(define-pmacro p0 (reg h-sr 0))
(define-pmacro vr (reg h-sr 1))
(define-pmacro pid (reg h-sr 2))
(define-pmacro srs (reg h-sr 3))
(define-pmacro p4 (reg h-sr 4))
(define-pmacro ccr (reg h-sr 5))
(define-pmacro mof (reg h-sr 7))
(define-pmacro p8 (reg h-sr 8))
(define-pmacro ibr (reg h-sr 9))
(define-pmacro ebp (reg h-sr 9))
(define-pmacro erp (reg h-sr 10))
(define-pmacro srp (reg h-sr 11))
(define-pmacro ccs (reg h-sr 13))
(define-pmacro dccr (reg h-sr 13))
(define-pmacro usp (reg h-sr 14))
(define-pmacro spc (reg h-sr 15))

(define-pmacro sp (reg h-gr 14))
(define-pmacro acr (reg h-gr 15))

(define-pmacro cris-condition-codes
  "CRIS condition codes in numeric order"
  (cc cs ne eq vc vs pl mi ls hi ge lt gt le a wf)
)

; No use having different lists; this is the only CC that
; differs between v10 and v32, and mostly in the name.
(define-pmacro sb wf)


;;;;;;;;;;;;;;;;;; -hardware

;; Various constant generators.

(define-hardware
  (name h-inc)
  (comment "autoincrement-bit syntax specifier")
  (type immediate (UINT 1))
  (values keyword "" (("" 0) ("+" 1)))
)

(define-hardware
  (name h-ccode)
  (comment "Condition code specifier")
  (type immediate (UINT 4))
  (values keyword ""
	  (.map (.pmacro (x y) ((.str x) y))
		cris-condition-codes (.iota 16)))
)

(define-hardware
  (name h-swap)
  (comment "Swap option specifier")
  (type immediate (UINT 4))
  (values
   keyword ""
   (.splice
    (" " 0)
    (.unsplice
     (.map
      (.pmacro (x y) ((.str x) y)) cris-swap-codes (.iota 15 1)))))
)

(define-hardware
  (name h-flagbits)
  (comment "Flag bits specifier")
  (type immediate (UINT 8))
  (values
   keyword ""
   (.map (.pmacro (x y) ((.str x) y)) cris-flag-combinations (.iota 256)))
)

; Apparently, the semantic-name isn't used for accessors, so external
; users like the sim glue and SID sees the -v32 and -pre-v32 munged names.
; Defining "dispatchers"; virtual registers whose getter and setter works
; on the "real" mach variants, seems to help.  CGEN-FIXME: Make
; semantic-name set the generated names.
(define-pmacro (cris-d-hwreg x-name x-type)
  (define-hardware
    (name x-name)
    (comment (.str "Dispatcher for " x-name))
    (attrs VIRTUAL)
    (type register x-type)
    (get () (reg (.sym x-name -x)))
    (set (val) (set (reg (.sym x-name -x)) val)))
)
(define-pmacro (cris-d-hwregf-a x-name x-type x-n x-attrs)
  (define-hardware
    (name x-name)
    (comment (.str "Dispatcher for " x-name))
    (.splice attrs VIRTUAL (.unsplice x-attrs))
    (type register x-type (x-n))
    (get (index) (reg (.sym x-name -x) index))
    (set (index val) (set-quiet (reg (.sym x-name -x) index) val)))
)
(define-pmacro (cris-d-hwregf x-name x-type x-n)
  (cris-d-hwregf-a x-name x-type x-n ())
)
(define-pmacro (cris-d-hwregf-p x-name x-type x-n)
  (cris-d-hwregf-a x-name x-type x-n (PROFILE))
)

; At first glance we could use (eq-attr (current-mach) ...) for
; everything, but that seems sometimes (always?) to yield false.  For
; ifields, it causes noncompilable C-code.  For the insn semantics code,
; it causes tests movei.ms and mulv32.ms to fail, apparently because the
; current-mach-is-v32 usage in flags setting is miscompiled as 0 (or
; rather, misgenerated).  Instead we use different definitions of a
; MACH-tagged virtual register yielding a constant, together with a
; pmacro.  CGEN-FIXME: If eq-attr is someday fixed, we could just remove
; these h-v32 virtual register definitions and change the pmacro
; definition for current-mach-is-v32.
(define-hardware
  (semantic-name h-v32)
  (name h-v32-v32)
  (attrs MACH-V32 VIRTUAL)
  (type register BI)
  (get () (const BI 1))
  (set (val) (error "Can't set h-v32"))
)
(define-hardware
  (semantic-name h-v32)
  (name h-v32-non-v32)
  (attrs MACH-PRE-V32 VIRTUAL)
  (type register BI)
  (get () (const BI 0))
  (set (val) (error "Can't set h-v32"))
)

;; "Real" hardware.

(define-hardware
  (name h-pc)
  (comment "program counter")
  (attrs PC PROFILE)
  (type pc)
  ; There's no bit 0 in PC, so just ignore it when jumping etc.
  (set (val) (set (raw-reg h-pc) (and val (inv 1))))
)

; Note that setting register 15 isn't handled here, but in each insn, so
; the proper "jump" attributes and other special stuff for speedy
; execution can be present.
(cris-d-hwregf-p h-gr SI 16)
(define-hardware
  (semantic-name h-gr-x)
  (name h-gr-pc)
  (attrs MACH-PC VIRTUAL)
  (comment "General purpose registers, aborting on PC access")
  (type register SI (16))
  (indices extern-keyword gr-names-pcreg)
  (get
   (index)
   (if SI (eq index 15)
       (error SI "General register read of PC is not implemented.")
       (reg SI h-gr-real-pc index)))
  (set
   (index val)
   (sequence
     ()
     (if (eq index 15)
	 (error "General register write to PC is not implemented."))
     (set (reg SI h-gr-real-pc index) val)))
)
(define-hardware
  (name h-gr-real-pc)
  (attrs MACH-PC)
  (comment "General purpose registers")
  (type register SI (16))
  (indices extern-keyword gr-names-pcreg)
)

; We have to use a virtual register trick to get the "raw", unaccounted
; contents of the global register; the raw-reg RTX only works for
; non-virtual register files.
(define-hardware
  (semantic-name h-raw-gr)
  (name h-raw-gr-pc)
  (attrs MACH-PC VIRTUAL)
  (comment "Unaccounted version of general purpose registers")
  (type register SI (16))
  (get (index) (raw-reg h-gr-real-pc index))
  (set (index val) (set-quiet (raw-reg h-gr-real-pc index) val))
)
(define-hardware
  (semantic-name h-gr-x)
  (name h-gr-acr)
  (attrs MACH-ACR)
  (comment "General purpose registers")
  (type register SI (16))
  (indices extern-keyword gr-names-acr)
)
(define-hardware
  (semantic-name h-raw-gr)
  (name h-raw-gr-acr)
  (attrs MACH-ACR VIRTUAL)
  (comment "Unaccounted version of general purpose registers")
  (type register SI (16))
  (get (index) (raw-reg h-gr-x index))
  (set (index val) (set-quiet (raw-reg h-gr-x index) val))
)

; FIXME: get and set semantics?  Unknown how to split semantics best; with
; get/set semantics or within the insn specification.  Doing the former for
; now.  Should use different names for pre-v10.
; FIXME: No dccr for v0 and v3.  Different high flag bits.
(cris-d-hwregf-p h-sr SI 16)
(define-pmacro
  (cris-h-sr machver)
  (define-hardware
    (semantic-name h-sr-x)
    (name (.sym h-sr-v machver))
    (attrs (MACH (.sym crisv machver)))
    (comment (.str "Special registers for v" machver))
    (type register SI (16))
    (indices extern-keyword p-names-v10)
    (get
     (index)
     (cond
      SI
      ((orif (orif (eq index (regno p0)) (eq index (regno p4)))
	     (eq index (regno p8))) 0)
      ((eq index (regno vr)) machver)
      ((orif (eq index (regno ccr))
	     (eq index (regno dccr)))
       ; Return "P U I X N Z V C" for the low 8 bits.
       ; FIXME: More bits.
       (or SI
	   (and SI (raw-reg SI h-sr-x (regno ccr)) #xffffff00)
	   (or
	    (zext SI (reg BI h-cbit))
	    (or
	     (sll (zext SI (reg BI h-vbit)) 1)
	     (or
	      (sll (zext SI (reg BI h-zbit)) 2)
	      (or
	       (sll (zext SI (reg BI h-nbit)) 3)
	       (or
		(sll (zext SI (reg BI h-xbit)) 4)
		(or
		 (sll (zext SI (reg BI h-ibit)) 5)
		 (or
		  (sll (zext SI (reg BI h-ubit)) 6)
		  (or
		   (sll (zext SI (reg BI h-pbit)) 7)
		   0))))))))))
      (else (raw-reg SI h-sr-x index))))
    (set
     (index val)
     (cond
      ((orif (orif (eq index (regno p0)) (eq index (regno p4)))
	     (orif (eq index (regno p8)) (eq index (regno vr))))
       (nop))
      ((orif (eq index (regno ccr)) (eq index (regno dccr)))
       (sequence
	 ()
	 (set (reg BI h-cbit) (if BI (ne SI (and val (sll 1 0)) 0) 1 0))
	 (set (reg BI h-vbit) (if BI (ne SI (and val (sll 1 1)) 0) 1 0))
	 (set (reg BI h-zbit) (if BI (ne SI (and val (sll 1 2)) 0) 1 0))
	 (set (reg BI h-nbit) (if BI (ne SI (and val (sll 1 3)) 0) 1 0))
	 (set (reg BI h-xbit) (if BI (ne SI (and val (sll 1 4)) 0) 1 0))
	 (set (reg BI h-ibit) (if BI (ne SI (and val (sll 1 5)) 0) 1 0))
	 (set (reg BI h-ubit) (if BI (ne SI (and val (sll 1 6)) 0) 1 0))
	 (set (reg BI h-pbit) (if BI (ne SI (and val (sll 1 7)) 0) 1 0))
	 (set-quiet (raw-reg SI h-sr-x (regno ccr)) val)
	 (set-quiet (raw-reg SI h-sr-x (regno dccr)) val)))
      (else (set-quiet (raw-reg SI h-sr-x index) val)))))
)

(cris-h-sr 0)
(cris-h-sr 3)
(cris-h-sr 8)
(cris-h-sr 10)

(define-hardware
  (semantic-name h-sr-x)
  (name h-sr-v32)
  (attrs MACH-V32)
  (comment "Special registers for v32")
  (type register SI (16))
  (indices extern-keyword p-names-v32)

  (get
   (index)
   (cond
    SI
    ((orif (orif (eq index (regno p0)) (eq index (regno p4)))
	   (eq index (regno p8))) 0)
    ((eq index (regno vr)) 32)
    ((eq index (regno ccs))
     ; Return "S R P U I X N Z V C" for the low 10 bits.
     (or SI
	 (and SI (raw-reg SI h-sr-x (regno ccs)) #x3ffffc00)
	 (or
	  (zext SI (reg BI h-cbit))
	  (or
	   (sll (zext SI (reg BI h-vbit)) 1)
	   (or
	    (sll (zext SI (reg BI h-zbit)) 2)
	    (or
	     (sll (zext SI (reg BI h-nbit)) 3)
	     (or
	      (sll (zext SI (reg BI h-xbit)) 4)
	      (or
	       (sll (zext SI (reg BI h-ibit)) 5)
	       (or
		(sll (zext SI (reg BI h-ubit)) 6)
		(or
		 (sll (zext SI (reg BI h-pbit)) 7)
		 (or
		  (sll (zext SI (reg BI h-rbit)) 8)
		  (or
		   (sll (zext SI (reg BI h-sbit)) 9)
		   (or
		    (sll (zext SI (reg BI h-mbit)) 30)
		    (or
		     (sll (zext SI (reg BI h-qbit)) 31)
		     0))))))))))))))
    ((eq index (regno usp))
     ; In user mode, return general stack pointer.
     (if BI (reg BI h-ubit)
	 (raw-reg SI h-gr-x (regno sp))
	 (raw-reg SI h-sr-x (regno usp))))
    (else (raw-reg SI h-sr-x index))))

  (set
   (index val)
   (cond
    ((orif (orif (eq index (regno p0)) (eq index (regno p4)))
	   (orif (eq index (regno p8)) (eq index (regno vr))))
     (nop))
    ((eq index (regno ccs))
     (sequence
       ()
       ; Protected bits are handled as such in the respective setter function.
       (set (reg BI h-cbit) (if BI (ne SI (and val (sll 1 0)) 0) 1 0))
       (set (reg BI h-vbit) (if BI (ne SI (and val (sll 1 1)) 0) 1 0))
       (set (reg BI h-zbit) (if BI (ne SI (and val (sll 1 2)) 0) 1 0))
       (set (reg BI h-nbit) (if BI (ne SI (and val (sll 1 3)) 0) 1 0))
       (set (reg BI h-xbit) (if BI (ne SI (and val (sll 1 4)) 0) 1 0))
       (set (reg BI h-ibit) (if BI (ne SI (and val (sll 1 5)) 0) 1 0))
       (set (reg BI h-sbit) (if BI (ne SI (and val (sll 1 9)) 0) 1 0))
       (set (reg BI h-mbit) (if BI (ne SI (and val (sll 1 30)) 0) 1 0))
       (set (reg BI h-pbit) (if BI (ne SI (and val (sll 1 7)) 0) 1 0))
       (set (reg BI h-rbit) (if BI (ne SI (and val (sll 1 8)) 0) 1 0))
       (set (reg BI h-qbit) (if BI (ne SI (and val (sll 1 31)) 0) 1 0))
       ; Set the U bit last, so the setter functions for the other bits
       ; don't see it as set from this operation.  It is not cleared from
       ; this operation, so we don't have to handle that; it's only
       ; cleared "manually" from within simulator-specific context-switch
       ; machinery.
       (set (reg BI h-ubit) (if BI (ne SI (and val (sll 1 6)) 0) 1 0))
       (set-quiet (raw-reg SI h-sr-x index) val)))
    ((eq index (regno usp))
     ; In user mode, set general register 14 too, whenever setting USP.
     (sequence
       ()
       (if (reg BI h-ubit) (set (raw-reg SI h-gr-x (regno sp)) val))
       (set (raw-reg SI h-sr-x (regno usp)) val)))
    ((eq index (regno srs))
     (if (not (reg BI h-ubit)) (set (raw-reg h-sr-x (regno srs)) val)))
    ((eq index (regno ebp))
     (if (not (reg BI h-ubit)) (set (raw-reg h-sr-x (regno ebp)) val)))
    ((eq index (regno pid))
     (if (not (reg BI h-ubit))
	 (sequence
	   ()
	   (c-call VOID "@cpu@_write_pid_handler" val)
	   (set (raw-reg h-sr-x (regno pid)) val))))
    ((eq index (regno spc))
     (if (not (reg BI h-ubit)) (set (raw-reg h-sr-x (regno spc)) val)))
    (else (set-quiet (raw-reg SI h-sr-x index) val))))
)

(define-hardware
  (name h-supr)
  (attrs MACH-V32 VIRTUAL)
  (comment "Support registers")
  (type register SI (16))
  (values keyword "" (.map (.pmacro (y) ((.str S y) y)) (.iota 16)))
  (get (index) (c-call SI "@cpu@_read_supr" index))
  (set (index val) (c-call VOID "@cpu@_write_supr" index val))
)

(define-pmacro (cris-dsh semantic-name name comment attrs type)
  "Like dsh, but the semantic-name is separate"
  (define-full-hardware
    name comment attrs semantic-name type () () () () () ())
)

; We define the condition codes that hold arithmetic flags separately
; and "or" them in, in the get and set methods of the special
; registers.  We define arithmetic flags as any of C V Z N X.  They
; thankfully have that order (zero-based) in all processor versions.

; To avoid having two variants of most move-type instructions because V32
; doesn't set C and V (and N and Z), we fake the setting to virtual
; registers which have two different implementations.
(define-pmacro (cris-move-flag f f-name f-whence)
  "Flag set differently in pre-v32 and v32 in some cases"
  (begin
    (dsh (.sym h- f bit) (.str f-name " bit") () (register BI))
    (cris-d-hwreg (.sym h- f bit-move) BI)
    (define-hardware
      (semantic-name (.sym h- f bit-move-x))
      (name (.sym h- f bit-move-v32))
      (comment (.str f-name " bit set in " f-whence " instructions, ignored"))
      (attrs MACH-V32 VIRTUAL)
      (type register BI)
      (get
       ()
       (sequence BI ()
		 (error (.str "Can't get h-" f "bit-move on CRISv32")) 0))
      (set (val) (nop)))
    (define-hardware
      (semantic-name (.sym h- f bit-move-x))
      (name (.sym h- f bit-move-pre-v32))
      (comment
       (.str
	f-name " bit set in " f-whence " instructions, same as " f "bit"))
      (attrs MACH-PRE-V32 VIRTUAL)
      (type register BI)
      (get () (reg (.sym h- f bit)))
      (set (val) (set (reg (.sym h- f bit)) val))))
)

(cris-move-flag c "carry" "move-type")
(cris-move-flag v "overflow" "move-type")
(cris-move-flag z "zero" "moveq")
(cris-move-flag n "sign" "moveq")

(dsh h-xbit "extended-arithmetic bit" () (register BI))
(cris-d-hwreg h-ibit BI)
(cris-dsh h-ibit-x h-ibit-pre-v32
	  "interrupt-enable bit" (MACH-PRE-V32) (register BI))
(dsh h-pbit "sequence-broken bit" ((MACH crisv10,crisv32)) (register BI))
(dsh h-rbit "carry bit for MCP+restore-p bit" (MACH-V32) (register BI))
(cris-d-hwreg h-ubit BI)
(cris-dsh h-ubit-x h-ubit-pre-v32
	  "user mode bit" ((MACH crisv10)) (register BI))
(dsh h-gbit "guru mode bit" (MACH-V32) (register BI))

; When doing a transition from kernel to user mode on V32, we save the
; stack pointer in an internal register and copy USP to R14, so we don't
; need non-trivial handlers for general registers.
(dsh
 h-kernel-sp
 "Kernel stack pointer during user mode"
 (MACH-V32)
 (register SI)
)

(define-hardware
  (semantic-name h-ubit-x)
  (name h-ubit-v32)
  (comment "User mode bit")
  (attrs MACH-V32)
  (type register BI)
  (set
   (val)
   (sequence
     ()
     (if (andif val (not (raw-reg BI h-ubit-x)))
	 (sequence
	   ()
	   (set (reg SI h-kernel-sp) (raw-reg h-gr-x (regno sp)))
	   (set (raw-reg h-gr-x (regno sp)) (raw-reg h-sr-x (regno usp)))
	   (set (raw-reg BI h-ubit-x) val)
	   (c-call VOID "@cpu@_usermode_enabled")))))
)

(define-hardware
  (semantic-name h-ibit-x)
  (name h-ibit-v32)
  (comment "Interrupt-enable bit")
  (attrs MACH-V32)
  (type register BI)
  (set
   (val)
   (sequence
     ()
     (if (not (reg BI h-ubit))
	 (sequence
	   ((BI enabled))
	   (set enabled (andif val (not (raw-reg BI h-ibit-x))))
	   (set (raw-reg BI h-ibit-x) val)
	   ; Call handler when enabling.
	   (if enabled (c-call VOID "@cpu@_interrupts_enabled"))))))
)

(define-hardware
  (name h-mbit)
  (comment "NMI enable bit")
  (attrs MACH-V32)
  (type register BI)
  (set
   (val)
   (sequence
     ()
     ; Don't allow clearing (through this handler) when once set.
     (if (andif val (andif (not (raw-reg BI h-mbit)) (not (reg BI h-ubit))))
	 (sequence
	   ()
	   (set (raw-reg BI h-mbit) 1)
	   ; Call handler when enabling.
	   (c-call VOID "@cpu@_nmi_enabled")))))
)

(define-pmacro
  (dsh-cond-bit-v32 x-name x-comment x-cond)
  "dsh bit for MACH-V32, with bit only changeable when X-COND"
  (define-hardware
    (name x-name)
    (comment x-comment)
    (attrs MACH-V32)
    (type register BI)
    (set (val) (sequence () (if x-cond (set (raw-reg BI x-name) val)))))
)
(define-pmacro
  (dsh-protected-bit-v32 x-name x-comment)
  "dsh bit for MACH-V32, with bit only changeable in kernel mode"
  (dsh-cond-bit-v32 x-name x-comment (not (reg BI h-ubit)))
)
(dsh-protected-bit-v32 h-qbit "Pending single-step bit")

(define-hardware
  (name h-sbit)
  (comment "Cause single step exception on ... [see CRISv32 ref] bit")
  (attrs MACH-V32)
  (type register BI)
  (set
   (val)
   (sequence
     ()
     (if (not (reg BI h-ubit))
	 (sequence
	   ((BI enabled))
	   (set enabled (andif val (not (raw-reg BI h-sbit))))
	   (set (raw-reg BI h-sbit) val)
	   ; Call handler when enabling.
	   (if enabled (c-call VOID "@cpu@_single_step_enabled"))))))
)

(dnop cbit "" (SEM-ONLY) h-cbit f-nil)
(dnop cbit-move
      "cbit for pre-V32, nothing for newer" (SEM-ONLY) h-cbit-move f-nil)
(dnop vbit "" (SEM-ONLY) h-vbit f-nil)
(dnop vbit-move
      "vbit for pre-V32, nothing for newer" (SEM-ONLY) h-vbit-move f-nil)
(dnop zbit "" (SEM-ONLY) h-zbit f-nil)
(dnop zbit-move
      "zbit for pre-V32, nothing for newer" (SEM-ONLY) h-zbit-move f-nil)
(dnop nbit "" (SEM-ONLY) h-nbit f-nil)
(dnop nbit-move
      "nbit for pre-V32, nothing for newer" (SEM-ONLY) h-nbit-move f-nil)
(dnop xbit "" (SEM-ONLY) h-xbit f-nil)
(dnop ibit "" (SEM-ONLY) h-ibit f-nil)
(dnop ubit "" (SEM-ONLY (MACH crisv10,crisv32)) h-ubit f-nil)
(dnop pbit "" (SEM-ONLY (MACH crisv10,crisv32)) h-pbit f-nil)
(dnop
 rbit "carry bit for MCP+restore-P flag bit" (SEM-ONLY MACH-V32) h-rbit f-nil)
(dnop sbit "" (SEM-ONLY MACH-V32) h-sbit f-nil)
(dnop mbit "" (SEM-ONLY MACH-V32) h-mbit f-nil)
(dnop qbit "" (SEM-ONLY MACH-V32) h-qbit f-nil)

(cris-d-hwreg h-insn-prefixed-p BI)
(cris-dsh
 h-insn-prefixed-p-x
 h-insn-prefixed-p-pre-v32
 "instruction-is-prefixed bit"
 (MACH-PRE-V32)
 (register BI)
)

; CRISv32 has no prefixing on memory accesses.  CGEN-FIXME: [Once (eq-attr
; (current-mach) ...) works]: can we change andif and/or orif so it
; doesn't look too close at short-circuited operands and avoid defining an
; operand that doesn't apply to a certain mach?
(define-hardware
 (semantic-name h-insn-prefixed-p-x)
 (name h-insn-prefixed-p-v32)
 (attrs MACH-V32 VIRTUAL)
 (comment "instruction-is-prefixed bit")
 (type register BI)
 (get () (const BI 0))
 (set (val) (nop))
)
(dnop
 prefix-set
 "Instruction-prefixed flag"
 (SEM-ONLY)
 h-insn-prefixed-p
 f-nil
)

(cris-dsh
 h-prefixreg h-prefixreg-pre-v32
 "Prefix-address register" (MACH-PRE-V32) (register SI))
(define-hardware
  (semantic-name h-prefixreg)
  (name h-prefixreg-v32)
  (comment "Prefix-address register, redirecting to ACR")
  (attrs MACH-V32 VIRTUAL)
  (type register SI)
  ; Why can't we have just a "acr" a.k.a "(reg h-gr 15)" here?
  (get () acr)
  (set (value) (set acr value))
)

(dnop
 prefixreg
 "Prefix address"
 (SEM-ONLY)
 h-prefixreg
 f-nil
)

;;;;;;;;;;;;;;;;;; -ifield

;	  15                                            0
;	 +-----------+-----+-----------+-----+-----------+
;	 | Operand2  | Mode| Opcode    | Size| Operand1  |
;	 +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
;
;	 Figure 5.  General instruction format.
;
; Some deviations from this format exist, [see below].

; Field specifiers in CGEN specify the highest numbered bit followed by
; the number of bits.

(dnf f-operand1 "Operand1" () 3 4)
(dnf f-size "Size" () 5 2)
(dnf f-opcode "Opcode" () 9 4)
(dnf f-mode "Mode" () 11 2)
(dnf f-operand2 "Operand2" () 15 4)

; Subfields.  FIXME: unfortunately there's some limitation in CGEN so we
; can't (as would be somewhat intuitive) make f-mode a multi-ifield
; consisting of these two, concatenated.
(dnf f-memmode "Indirect of autoincrement" () 10 1)
(dnf f-membit "Memory specifier" () 11 1)

(dnf f-b5 "Bit 5 (zero for some quick operands)" () 5 1)

; When the addressing mode is quick immediate, the low bits are
; part of the operand.
(dnf f-opcode-hi "Opcode field, high bits" () 9 2)

; Common synonyms for those fields.
(define-pmacro f-source f-operand1)
(define-pmacro f-dest f-operand2)

(dnmf
 f-dstsrc "Dest and source fields concatenated" () UINT
 (f-dest f-source)
 ; Insert-code.
 (sequence
   ((SI tmpval))
   (set tmpval (ifield f-dstsrc))
   (set (ifield f-dest) (and (srl tmpval 4) #xf))
   (set (ifield f-source) (and tmpval #xf)))
 ; Extract-code.
 (set
  (ifield f-dstsrc)
  (and (or (ifield f-source) (sll (ifield f-dest) 4)) #xff))
)

;The 6-bit value may be sign or zero extended depending on the instruction.
;
;	  15                                            0
;	 +-----------+-----+-----------+-----+-----------+
;	 | Operand2  | Mode| Opcode    | Immediate value |
;	 +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
;
;   Figure 6.  Quick immediate addressing mode instruction format.

(dnf f-u6 "Quick immediate unsigned 6-bit" () 5 6)
(df f-s6 "Quick signed 6-bit" () 5 6 INT #f #f)

; There's also a variant used with shift insns, with one bit larger opcode
; and one bit smaller immediate value, though it doesn't have a general
; graphic description.
(dnf f-u5 "Quick unsigned 5-bit" () 4 5)

; Similarly, a four-bit immediate field.
(dnf f-u4 "Quick unsigned 4-bit" () 3 4)

; An 8-bit signed value, which doesn't have a general graphic description.
(df f-s8 "Source signed byte" () 7 8 INT #f #f)

; The 9-bit branch offset, with bit 0 in the field being bit 8 in the
; offset, and bit 0 in the offset always 0.
(df f-disp9-hi "PC-relative 9-bit offset, sign bit" () 0 1 INT #f #f)
(dnf f-disp9-lo "PC-relative 9-bit offset, low bits" () 7 7)

; It would work to have this in two mach-specific variants, but
; considering that current-mach-is-v32 is a compile-time constant, we
; don't win any simulator performance.
(dnmf
 f-disp9 "PC-relative 9-bit offset"
 (PCREL-ADDR)
 INT
 (f-disp9-hi f-disp9-lo)
 ; Insert-code.
 (sequence
   ((SI absval))
   (set absval (srl (sub (sub SI (ifield f-disp9) pc)
			 (if SI current-mach-is-v32 0 2)) 1))
   (set (ifield f-disp9-hi) (if (lt absval 0) 1 0))
   (set (ifield f-disp9-lo) (and absval) #x7f))
 ; Extract-code.
 (sequence
   ((SI abslo) (SI absval))
   (set abslo (sll (ifield f-disp9-lo) 1))
   (set absval
	(or (if SI (ne (ifield f-disp9-hi) 0)
		(inv SI #xff)
		0)
	    abslo))
   (set (ifield f-disp9)
	(add SI (add SI pc absval) (if SI current-mach-is-v32 0 2))))
)

; The operand of LAPCQ is PC-relative, similar to f-disp9 but unsigned,
; and only four bits.
(df
 f-qo
 "PC-relative 4-bit unsigned offset, counted from start of insn"
 (MACH-V32 PCREL-ADDR)
 3 4
 UINT
 ; Insert-code.
 ((value pc) (srl SI (sub SI value pc) 1))
 ; Extract-code.
 ((value pc) (add SI pc (sll SI value 1)))
)

; 8-bit, 16-bit and 32-bit immediates.  The 8-bit values are constructed
; through encoding/decoding functions, since the PC increment is by a
; word.
(define-pmacro (dcrisf x-name x-comment x-attrs x-word-offset x-word-length
		       x-start x-length x-mode x-encode x-decode)
  (define-ifield
    (name x-name)
    (comment x-comment)
    (.splice attrs (.unsplice x-attrs))
    (word-offset x-word-offset)
    (word-length x-word-length)
    (start x-start)
    (length x-length)
    (mode x-mode)
    (.splice encode (.unsplice x-encode))
    (.splice decode (.unsplice x-decode))
  )
)

(dcrisf
 f-indir-pc+-byte "[PC+] 8-bit field" (SIGN-OPT)
 16 16
 15 16 ; CGEN-FIXME: Should be 7 8
 INT (#f) (#f)
)

(dcrisf
 f-indir-pc+-word "[PC+] 16-bit field" (SIGN-OPT)
 16 16 15 16 INT (#f) (#f)
)

; CGEN-FIXME: I shouldn't have to use trunc here, should I?
; Sign-extension should be implicit through use of SI (as opposed to USI)
; and additionally through SIGN-OPT.  The ext isn't actually needed, but
; having it there rather than implicit makes more sense than to just have
; the trunc.
(dcrisf
 f-indir-pc+-word-pcrel "[PC+] PC-relative 16-bit field"
 (PCREL-ADDR SIGN-OPT)
 16 16 15 16 SI
 ((value pc) (sub SI value (add SI pc (if SI current-mach-is-v32 0 4))))
 ((value pc) (add SI (ext SI (trunc HI value)) (add SI pc (if SI current-mach-is-v32 0 4))))
)

(dcrisf
 f-indir-pc+-dword "PC autoincrement - 32-bit field" (SIGN-OPT)
 16 32 31 32 INT (#f) (#f)
)

(dcrisf
 f-indir-pc+-dword-pcrel
 "[PC+] PC-relative 32-bit field, counted from start of insn"
 (SIGN-OPT MACH-V32 PCREL-ADDR)
 16 32 31 32 INT
 ((value pc) (sub SI value pc))
 ((value pc) (add SI pc value))
)

;;;;;;;;;;;;;;;;;; -insn-enum -normal-operand -normal-derived-operand

;; How different fields are transformed into something we put in insns.

;	 m       := size modifier, byte (00), word (01) or dword (10)
;	 z       := size modifier, byte (0) or word (1)
; (For the latter, the "higher" bit is always 0, mapping trivially on m.)

(define-normal-insn-enum
  insn-size
  "Standard instruction operand size"
  ()
  SIZE_
  f-size
  ("BYTE" "WORD" "DWORD" "FIXED")
)

; The mode field for insns with "s" operand (perhaps with a partial set of
; operand types).
(define-normal-insn-enum
  insn-mode
  "Standard instruction addressing modes"
  ()
  MODE_
  f-mode
  ("QUICK_IMMEDIATE" "REGISTER" "INDIRECT" "AUTOINCREMENT")
)

(define-normal-insn-enum
  insn-memoryness-mode
  "Whether the operand is indirect"
  ()
  MODEMEMP_
  f-membit
  ("NO" "YES")
)

; FIXME: Needed?
(define-normal-insn-enum
  insn-memincness-mode
  "Whether the indirect operand is autoincrement"
  ()
  MODEINCP_
  f-memmode
  ("NO" "YES")
)

; Special semantics for multiply.
(define-pmacro MODE_MULU MODE_INDIRECT)
(define-pmacro MODE_MULS MODE_AUTOINCREMENT)

(define-normal-insn-enum
  insn-signed-size
  "Signed instruction operand size"
  ()
  SIGNED_
  f-size
  ("UNDEF_SIZE_0" "UNDEF_SIZE_1" "BYTE" "WORD")
)

(define-normal-insn-enum
  insn-unsigned-size
  "Unsigned instruction operand size"
  ()
  UNSIGNED_
  f-size
  ("BYTE" "WORD" "UNDEF_SIZE_2" "UNDEF_SIZE_3")
)

;	 Rs      := source operand, register addressing mode
(dnop Rs "Source general register" () h-gr f-source)

;	 [Rs]    := source operand, indirect addressing mode
; = MODE_INDIRECT Rs

;	 [Rs+]   := source operand, autoincrement addressing mode  (see note!)
; = MODE_AUTOINCREMENT Rs

; The union of [Rs] and [Rs(+)]
; = MODEMEMP_YES Rs

; Whether an indirect operand is increment can be obtained as an operand by
; = inc
(dnop inc "Incrementness of indirect operand" () h-inc f-memmode)

; or as an affirmative specifier
; = MODEINCP_YES
; (or MODEINCP_NO)

;	 s       := source operand, any of the modes Rs, [Rs] or [Rs+]
; No common operand; each are handled separately, using the above definitions.

;	 Ps      := source operand, special register
; It's in the field usually used for the destination.
(dnop Ps "Source special register" () h-sr f-dest)

;	 Ss      := source operand, support register
; It's in the field usually used for the destination.
(dnop Ss "Source support register" (MACH-V32) h-supr f-dest)

;	 Sd      := source operand, support register
(dnop Sd "Destination support register" (MACH-V32) h-supr f-dest)

;	 i       := 6-bit signed immediate operand
(dnop i "Quick signed 6-bit" () h-sint f-s6)

;	 j       := 6-bit unsigned immediate operand
(dnop j "Quick unsigned 6-bit" () h-uint f-u6)

;	 c       := 5-bit immediate shift value
(dnop c "Quick unsigned 5-bit" () h-uint f-u5)

;	 qo      := 4-bit unsigned immediate operand
(dnop qo "Quick unsigned 4-bit, PC-relative" (MACH-V32) h-addr f-qo)

;	 Rd      := destination operand, register addressing mode
(dnop Rd "Destination general register" () h-gr f-dest)
(define-pmacro Rd-sfield Rs)
(define-pmacro Rs-dfield Rd)

;	 [Rd]    := destination operand, indirect addressing mode
; = MODE_INDIRECT Rd

;	 [Rd+]   := destination operand, autoincrement addressing mode
; = MODE_AUTOINCREMENT Rd

;	 [PC+]   := destination operand PC, autoincrement addressing mode
; = MODE_AUTOINCREMENT (f-dest 15) X
; where X is one of sconst8, uconst8, sconst16, uconst16 or const32.
(dnop sconst8 "Signed byte [PC+]" () h-sint f-indir-pc+-byte)
(dnop uconst8 "Unsigned byte [PC+]" () h-uint f-indir-pc+-byte)
(dnop sconst16 "Signed word [PC+]" () h-sint f-indir-pc+-word)
(dnop uconst16 "Unsigned word [PC+]" () h-uint f-indir-pc+-word)
(dnop const32 "Dword [PC+]" () h-uint f-indir-pc+-dword)
(dnop const32-pcrel "Dword [PC+]" () h-addr f-indir-pc+-dword-pcrel)

;	 d       := destination operand, any of the modes Rd, [Rd] or [Rd+]
; No common operand; each are handled separately, using the above definitions.

;	 Pd      := destination operand, special register
(dnop Pd "Destination special register" () h-sr f-dest)

;	 o       := 8-bit immediate offset value
(dnop o "Signed 8-bit" () h-sint f-s8)

; The division of operand semantics and insn fields in the CRIS
; instruction set reference doesn't permit a simple mapping to a
; simulator description, and the division of insn fields and
; semantics in CGEN is not between the define-normal-ifield
; vs. define-normal-operand.  For example, the "o" operand is
; PC-relative for branch insns, as described by the CGEN f-disp9
; field.
; See comment at f-disp9; thankfully the mach
; attribute works here to have two different definitions by the
; same name.
(dnop o-pcrel "9-bit signed immediate PC-rel"
      ()
      h-iaddr f-disp9)

(dnop o-word-pcrel "16-bit signed immediate PC-rel"
      ()
      h-iaddr f-indir-pc+-word-pcrel)

;	 cc      := condition code
(dnop cc "Condition codes" () h-ccode f-dest)

;	 n       := 4 bit breakpoint exception vector index
(dnop n "Quick unsigned 4-bit" () h-uint f-u4)

; The "option" in the SWAP insn.
(dnop swapoption "Swap option" () h-swap f-dest)

(dnop list-of-flags "Flag bits as operand" () h-flagbits f-dstsrc)

; Enumerations for insn codes, for use in insn definitions
; instead of raw numbers.  See it as operand definitions for the
; opcode field.

(define-normal-insn-enum
  insn-qi-opc
  "Insns for MODE_QUICK_IMMEDIATE"
  ()
  Q_
  f-opcode
  ("BCC_0" "BCC_1" "BCC_2" "BCC_3"
   "BDAP_0" "BDAP_1" "BDAP_2" "BDAP_3"
   "ADDQ" "MOVEQ" "SUBQ" "CMPQ"
   "ANDQ" "ORQ" "ASHQ" "LSHQ")
)

(define-normal-insn-enum
  insn-qihi-opc
  "Same as insn-qi-opc, though using only the high two bits of the opcode"
  ()
  QHI_
  f-opcode-hi
  ("BCC" "BDAP" "OTHER2" "OTHER3")
)
(define-pmacro QHI_ADDOQ QHI_BDAP)

(define-normal-insn-enum
  insn-r-opc
  "Insns for MODE_REGISTER and either SIZE_BYTE, SIZE_WORD or SIZE_DWORD"
  ()
  R_
  f-opcode
  ("ADDX" "MOVX" "SUBX" "LSL"
   "ADDI" "BIAP" "NEG" "BOUND"
   "ADD" "MOVE" "SUB" "CMP"
   "AND" "OR" "ASR" "LSR")
)
(define-pmacro R_ADDI_ACR R_BIAP)

(define-normal-insn-enum
  insn-rfix-opc
  "Insns for MODE_REGISTER and SIZE_FIXED"
  ()
  RFIX_
  f-opcode
  ("ADDX" "MOVX" "SUBX" "BTST"
   "SCC" "ADDC" "SETF" "CLEARF"
   "MOVE_R_S" "MOVE_S_R" "ABS" "DSTEP"
   "LZ" "SWAP" "XOR" "MSTEP")
)
(define-pmacro RFIX_MCP RFIX_MSTEP)

(define-normal-insn-enum
  insn-indir-opc
  "Insns for (MODE_INDIRECT or MODE_AUTOINCREMENT) and either SIZE_BYTE, SIZE_WORD or SIZE_DWORD"
  ()
  INDIR_
  f-opcode
  ("ADDX" "MOVX" "SUBX" "CMPX"
   "MUL" "BDAP_M" "ADDC" "BOUND"
   "ADD" "MOVE_M_R" "SUB" "CMP"
   "AND" "OR" "TEST" "MOVE_R_M")
)
(define-pmacro INDIR_ADDO INDIR_BDAP_M)

(define-normal-insn-enum
  insn-infix-opc
  "Insns for (MODE_INDIRECT or MODE_AUTOINCREMENT) and SIZE_FIXED"
  ()
  INFIX_
  f-opcode
  ("ADDX" "MOVX" "SUBX" "CMPX"
   "JUMP_M" "DIP" "JUMP_R" "BCC_M"
   "MOVE_M_S" "MOVE_S_M" "BMOD" "BSTORE"
   "RBF" "SBFS" "MOVEM_M_R" "MOVEM_R_M")
)

(define-pmacro INFIX_MOVE_SS INFIX_SBFS)
(define-pmacro INFIX_LAPC INFIX_DIP)
(define-pmacro INFIX_RFE INFIX_JUMP_M)
(define-pmacro INFIX_RFN INFIX_JUMP_M)
(define-pmacro INFIX_HALT INFIX_JUMP_M)
(define-pmacro INFIX_SFE INFIX_JUMP_M)
(define-pmacro INFIX_RFG INFIX_JUMP_M)
(define-pmacro INFIX_JAS_R INFIX_JUMP_R)
(define-pmacro INFIX_JAS_M INFIX_JUMP_R)
(define-pmacro INFIX_JASC INFIX_RBF)
(define-pmacro INFIX_JUMP_P INFIX_BCC_M)
(define-pmacro INFIX_BAS INFIX_BMOD)
(define-pmacro INFIX_BASC INFIX_BSTORE)
(define-pmacro INFIX_BREAK INFIX_JUMP_M)
(define-pmacro INFIX_FIDXI INFIX_JUMP_M)
(define-pmacro INFIX_FIDXD INFIX_BAS)
(define-pmacro INFIX_FTAGI INFIX_JUMP_M)
(define-pmacro INFIX_FTAGD INFIX_BAS)

; Classes of insns:
; Move-to-register, move-to-memory, move-to/from-other-register,
; logical, arithmetic, branch.
; Classes of operands:
; quick, register, memory-indirect, memory-postinc.


;;;;;;;;;;;;;;;;;; -normal-insn

(define-pmacro (dni-bwd-attr name comment attr syntax fmt fsem timing)
  (begin
    (dni (.sym name .b) (.str "byte " comment) attr (.str name ".b " syntax)
	 (.splice (.unsplice fmt) SIZE_BYTE)
	 (fsem QI)
	 timing)
    (dni (.sym name .w) (.str "word " comment) attr (.str name ".w " syntax)
	 (.splice (.unsplice fmt) SIZE_WORD)
	 (fsem HI)
	 timing)
    (dni (.sym name .d) (.str "dword " comment) attr (.str name ".d " syntax)
	 (.splice (.unsplice fmt) SIZE_DWORD)
	 (fsem SI)
	 timing))
)

(define-pmacro (dni-cdt-attr name comment attr syntax fmt semantics)
  "dni without specifying timing"
  (dni name comment attr syntax fmt semantics (cris-timing))
)

(define-pmacro (dni-cdt-bwd-attr name comment attr syntax fmt fsem)
  (begin
    (dni-cdt-attr (.sym name .b-r) (.str "byte " comment) attr (.str name ".b " syntax)
		  (.splice (.unsplice fmt) SIZE_BYTE)
		  (fsem QI))
    (dni-cdt-attr (.sym name .w-r) (.str "word " comment) attr (.str name ".w " syntax)
		  (.splice (.unsplice fmt) SIZE_WORD)
		  (fsem HI))
    (dni-cdt-attr (.sym name .d-r) (.str "dword " comment) attr (.str name ".d " syntax)
		  (.splice (.unsplice fmt) SIZE_DWORD)
		  (fsem SI)))
)

; Some convenience macros based on the above ones.
(define-pmacro (dni-cdt-bwd name comment syntax fmt fsem)
  (dni-cdt-bwd-attr name comment () syntax fmt fsem)
)

(define-pmacro (dni-bwd name comment syntax fmt fsem timing)
  (dni-bwd-attr comment () syntax fmt fsem timing)
)

(define-pmacro-map
  (((dni-cdt name comment syntax fmt semantics)
    (dni-cdt-attr name comment () syntax fmt semantics))
   ((dni-c-QI-attr name comment attr syntax fmt fsem)
    (dni name comment attr syntax fmt fsem (cris-timing-const-QI)))
   ((dni-c-HI-attr name comment attr syntax fmt fsem)
    (dni name comment attr syntax fmt fsem (cris-timing-const-HI)))
   ((dni-c-SI-attr name comment attr syntax fmt fsem)
    (dni name comment attr syntax fmt fsem (cris-timing-const-SI))))
)

(define-pmacro-map
  (((dni-c-QI name comment syntax fmt fsem)
    (dni-c-QI-attr name comment () syntax fmt fsem))
   ((dni-c-HI name comment syntax fmt fsem)
    (dni-c-HI-attr name comment () syntax fmt fsem))
   ((dni-c-SI name comment syntax fmt fsem)
    (dni-c-SI-attr name comment () syntax fmt fsem)))
)

; These flags are both cleared by all insns except prefixes (before
; CRISv32) and "setf x", so we put them in a handy macro.
(define-pmacro
  (reset-x-p)
  (sequence
    ()
    (set xbit 0)
    (set prefix-set 0))
)

;        NOP           | 0  0  0  0| 0  1| 0  1  0  0| 0  0| 1  1  1  1|
; (For V32, "SETF" (no flags) is used.)
(dni-cdt-attr
 nop "nop" (MACH-PC) "nop"
 (+ (f-operand2 0) R_ADDI MODE_REGISTER SIZE_BYTE (f-operand1 15))
 (reset-x-p)
)

; Pre- and v32+ variants MOVE insns set flags differently.  These two
; macros for flag settings are meant to be used in all MOVE insns.
(define-pmacro (setf-moveq value)
  (sequence
    ()
    (set-quiet nbit-move (lt SI value 0))
    (set-quiet zbit-move (andif BI (eq SI value 0) (if BI xbit zbit 1)))
    (set-quiet cbit-move 0)
    (set-quiet vbit-move 0)
    (reset-x-p))
)

(define-pmacro (setf-move size value)
  (sequence
    ()
    (set nbit (lt size value 0))
    (set zbit (andif BI (eq size value 0) (if BI xbit zbit 1)))
    (set-quiet cbit-move 0)
    (set-quiet vbit-move 0)
    (reset-x-p))
)
; The CGEN binop-with-bit operations are not documented well enough that I
; trust their semantics to remain stable.  Better define local ones: the
; semantics become explicit.
(define-pmacro-map
  (((add-overflow size R D S carry)
    (orif BI (andif BI (andif BI (lt size S 0) (lt size D 0)) (ge size R 0))
	  (andif BI (andif BI (ge size S 0) (ge size D 0)) (lt size R 0))))
   ((add-carry size R D S carry)
    (orif BI (andif BI (lt size S 0) (lt size D 0))
	  (orif BI (andif BI (lt size D 0) (ge size R 0))
		(andif BI (lt size S 0) (ge size R 0)))))
   ((sub-overflow size R D S carry)
    (orif BI (andif BI (andif BI (ge size S 0) (lt size D 0)) (ge size R 0))
	  (andif BI (andif BI (lt size S 0) (ge size D 0)) (lt size R 0))))
   ((sub-carry size R D S carry)
    (orif BI (andif BI (lt size S 0) (ge size D 0))
	  (orif BI (andif BI (ge size D 0) (lt size R 0))
		(andif BI (lt size S 0) (lt size R 0)))))
   ; Only valid for size := DI
   ((mulu-overflow size R D S carry)
    (ne DI R (zext DI (trunc SI R))))
   ((mulu-carry size R D S carry)
    (andif current-mach-is-v32 carry))
   ((muls-overflow size R D S carry)
    (ne DI R (ext DI (trunc SI R))))
   ((muls-carry size R D S carry)
    (andif current-mach-is-v32 carry)))
)

(define-pmacro (setf-arit2 size op source1 source2 result carryin carryout)
  "Set no-prefix, x=0, carryout, v, z and n according to operation OP in size SIZE"
  (sequence
    ()
    (set carryout ((.sym op -carry) size result source1 source2 carryin))
    (set nbit (lt size result 0))
    (set zbit (andif BI (eq size result 0) (orif BI zbit (not BI xbit))))
    (set vbit ((.sym op -overflow) size result source1 source2 carryin))
    (reset-x-p))
)
(define-pmacro (setf-arit size op source1 source2 result carry)
  "Set no-prefix, x=0, c, v, z and n according to operation OP in size SIZE"
  (setf-arit2 size op source1 source2 result carry cbit)
)

; Let's have convienence macros for arithmetic, including evaluation of the
; operation, destination modification, flag setting and carry propagation.
(define-pmacro
  (cris-arit6-int arit size fdest fdest_op srcop1 srcop2 carryout carryin)
  "Core for performing some three-operand arithmetic with carry as parameter"
  (sequence
   ((size tmpopd) (size tmpops) (BI carry) (size newval))
   (set tmpops srcop2)
   (set tmpopd srcop1)
   (set carry carryin)
   (set newval ((.sym arit c) tmpopd tmpops (if BI (eq xbit 0) 0 carry)))
   (fdest size fdest_op newval)
   (setf-arit2 size arit tmpopd tmpops newval carry carryout))
)

(define-pmacro
  (cris-arit5-int arit size destregno srcop1 srcop2 carryout carryin)
  "As cris-arit6-int, but to set a part of a general register"
  (cris-arit6-int
   arit
   size
   (.pmacro (sz regno val) (set-subreg-gr sz regno val))
   destregno
   srcop1
   srcop2
   carryout
   carryin)
)

(define-pmacro (cris-arit5 arit size destreg srcop1 srcop2 carryout carryin)
  "As cris-arit5-int, but takes a register as parameter, not register number"
  (cris-arit5-int arit size (regno destreg) srcop1 srcop2 carryout carryin)
)
(define-pmacro (cris-arit3-int arit size destregno srcop1 srcop2)
  "As cris-arit5-int, but with carry-in same as carry-out"
  (cris-arit5-int arit size destregno srcop1 srcop2 cbit cbit)
)
(define-pmacro (cris-arit3 arit size destreg srcop1 srcop2)
  "As cris-arit3-int, but takes a register as parameter, not register number"
  (cris-arit3-int arit size (regno destreg) srcop1 srcop2)
)
(define-pmacro (cris-arit arit size destreg srcop)
  "As cris-arit3, but with destination same as srcop1"
  (cris-arit3 arit size destreg destreg srcop)
)
(define-pmacro (cris-arit-3op arit size destsrcop2 srcop1 dest-3op)
  "Similar to cris-arit3-int, but for prefixed operand only"
  (cris-arit3-int arit size
		  (if SI (andif prefix-set (not inc))
		      (regno dest-3op)
		      (regno destsrcop2))
		  destsrcop2 srcop1)
)

; Convenience macros to select a part of a value and its complement, for
; the <op>.b, <op>.w and <op>.d operations.
(define-pmacro (QI-part val) (and SI val #xff))
(define-pmacro (non-QI-part val) (and SI val #xffffff00))
(define-pmacro (HI-part val) (and SI val #xffff))
(define-pmacro (non-HI-part val) (and SI val #xffff0000))
(define-pmacro (SI-part val) val)
(define-pmacro (non-SI-part val) 0)
(define-pmacro
  (set-subreg-gr-bw BWD gregno newval)
  "Set a byte or word part or full dword of a general register"
  (sequence
    ((SI oldregval))
    (set oldregval (reg h-raw-gr gregno))
    (set (reg h-gr gregno)
	 (or SI ((.sym BWD -part) newval) ((.sym non- BWD -part) oldregval))))
)
(define-pmacro (set-subreg-gr BWD gregno newval)
  ((.sym set-subreg-gr- BWD) BWD gregno newval)
)
(define-pmacro (set-subreg-gr-SI SI gregno newval)
  (set (reg h-gr gregno) newval)
)
(define-pmacro set-subreg-gr-HI set-subreg-gr-bw)
(define-pmacro set-subreg-gr-QI set-subreg-gr-bw)

; MOVE.m  Rs,Rd           [ Rd | 011001mm | Rs ]
(dni-cdt-bwd
 move "move.m r,R"
 "move.m ${Rs},${Rd}"
 (+ Rd MODE_REGISTER R_MOVE Rs)
 (.pmacro
  (BWD)
  (sequence
    ((BWD newval))
    (set newval Rs)
    (set-subreg-gr BWD (regno Rd) newval)
    (setf-move BWD newval)))
)

; MOVE.D  PC,Rd           [ Rd | 01100110 | 1111 ]
; This insn is used in PIC code to find out the code address.  It's an
; exception to the (guarded) non-implementation of PC operands in this
; file.
(dni-cdt-attr
 movepcr "move.d PC,R"
 (MACH-PC UNCOND-CTI)
 "move.d PC,${Rd}"
 (+ Rd MODE_REGISTER R_MOVE SIZE_DWORD (f-source 15))
 (sequence
   ((SI pcval))
   (set pcval (add SI pc 2))
   (set Rd pcval)
   (setf-move SI pcval))
)

; MOVEQ   i,Rd            [ Rd | 001001 | i ]
(dni-cdt
 moveq "moveq"
 "moveq $i,$Rd"
 (+ Rd MODE_QUICK_IMMEDIATE Q_MOVEQ i)
 (sequence
   ((SI newval))
   (set newval i)
   (set Rd newval)
   (setf-moveq newval))
)

(define-pmacro (dni-cdt-sbw name comment syntax fmt fsem)
  "Insn generator for insns with signed <op>.b and <op>.w variants"
  (begin
    (dni-cdt
     (.sym name .b-r) (.str "byte " comment) (.str name ".b " syntax)
     (.splice (.unsplice fmt) SIGNED_BYTE)
     (fsem QI))
    (dni-cdt
     (.sym name .w-r) (.str "word " comment) (.str name ".w " syntax)
     (.splice (.unsplice fmt) SIGNED_WORD)
     (fsem HI)))
)

; MOVS.z  Rs,Rd           [ Rd | 0100011z | Rs ]
(dni-cdt-sbw
 movs "movs.m r,R"
 "movs.m ${Rs},${Rd}"
 (+ Rd MODE_REGISTER R_MOVX Rs)
 (.pmacro
  (BW)
  (sequence
    ((BW newval))
    (set newval Rs)
    (set Rd (ext SI newval))
    (setf-move SI newval)))
)

(define-pmacro (dni-cdt-ubw name comment syntax fmt fsem)
  "Similar to dni-cdt-sbw but for unsigned operations"
  (begin
    (dni-cdt
     (.sym name .b-r) (.str "byte " comment) (.str name ".b " syntax)
     (.splice (.unsplice fmt) UNSIGNED_BYTE)
     (fsem QI))
    (dni-cdt
     (.sym name .w-r) (.str "word " comment) (.str name ".w " syntax)
     (.splice (.unsplice fmt) UNSIGNED_WORD)
     (fsem HI)))
)

; MOVU.z  Rs,Rd           [ Rd | 0100010z | Rs ]
(dni-cdt-ubw
 movu "movu.m r,R"
 "movu.m ${Rs},${Rd}"
 (+ Rd MODE_REGISTER R_MOVX Rs)
 (.pmacro
  (BW)
  (sequence
    ((BW newval))
    (set newval Rs)
    (set Rd (zext SI newval))
    (setf-move SI newval)))
)

; (MOVE.m  [PC+],Rd        [ Rd | 111001mm | 1111 ])
; For the moment, it doesn't seem worthwhile to make a dni-c-bwd macro;
; too many places to parametrize.
(dni-c-QI
 movecbr "move.b [PC+],R"
 "move.b ${sconst8},${Rd}"
 (+ Rd MODE_AUTOINCREMENT INDIR_MOVE_M_R SIZE_BYTE (f-source 15) sconst8)
 (sequence
   ((QI newval))
   (set newval sconst8)
   (set-subreg-gr QI (regno Rd) newval)
   (setf-move QI newval))
)

(dni-c-HI
 movecwr "move.w [PC+],R"
 "move.w ${sconst16},${Rd}"
 (+ Rd MODE_AUTOINCREMENT INDIR_MOVE_M_R SIZE_WORD (f-source 15) sconst16)
 (sequence
   ((HI newval))
   (set newval sconst16)
   (set-subreg-gr HI (regno Rd) newval)
   (setf-move HI newval))
)

(dni-c-SI
 movecdr "move.d [PC+],R"
 "move.d ${const32},${Rd}"
 (+ Rd MODE_AUTOINCREMENT INDIR_MOVE_M_R SIZE_DWORD (f-source 15) const32)
 (sequence
   ((SI newval))
   (set newval const32)
   (set Rd newval)
   (setf-move SI newval))
)

; (MOVS.z  [PC+],Rd        [ Rd | 1100011z | 1111 ])
; Similarly, no likely net improvement for a dni-c-bw.
(dni-c-QI
 movscbr "movs.b [PC+],R"
 "movs.b ${sconst8},${Rd}"
 (+ Rd MODE_AUTOINCREMENT INDIR_MOVX SIGNED_BYTE (f-source 15) sconst8)
 (sequence
   ((SI newval))
   ; FIXME: Make trunc unnecessary.
   (set newval (ext SI (trunc QI sconst8)))
   (set Rd newval)
   (setf-move SI newval))
)

(dni-c-HI
 movscwr "movs.w [PC+],R"
 "movs.w ${sconst16},${Rd}"
 (+ Rd MODE_AUTOINCREMENT INDIR_MOVX SIGNED_WORD (f-source 15) sconst16)
 (sequence
   ((SI newval))
   ; FIXME: Make trunc unnecessary.
   (set newval (ext SI (trunc HI sconst16)))
   (set Rd newval)
   (setf-move SI newval))
)

; (MOVU.z  [PC+],Rd        [ Rd | 1100010z | 1111 ])
(dni-c-QI
 movucbr "movu.b [PC+],R"
 "movu.b ${uconst8},${Rd}"
 (+ Rd MODE_AUTOINCREMENT INDIR_MOVX UNSIGNED_BYTE (f-source 15) uconst8)
 (sequence
   ((SI newval))
   ; FIXME: Make trunc unnecessary.
   (set newval (zext SI (trunc QI uconst8)))
   (set Rd newval)
   (setf-move SI newval))
)

(dni-c-HI
 movucwr "movu.w [PC+],R"
 "movu.w ${uconst16},${Rd}"
 (+ Rd MODE_AUTOINCREMENT INDIR_MOVX UNSIGNED_WORD (f-source 15) uconst16)
 (sequence
   ((SI newval))
   ; FIXME: Make trunc unnecessary.
   (set newval (zext SI (trunc HI uconst16)))
   (set Rd newval)
   (setf-move SI newval))
)

; ADDQ    j,Rd            [ Rd | 001000 | j ]
(dni-cdt
 addq "addq j,Rd"
 "addq $j,$Rd"
 (+ Rd MODE_QUICK_IMMEDIATE Q_ADDQ j)
 (cris-arit add SI Rd j)
)

; SUBQ    j,Rd            [ Rd | 001010| j ]
(dni-cdt
 subq "subq j,Rd"
 "subq $j,$Rd"
 (+ Rd MODE_QUICK_IMMEDIATE Q_SUBQ j)
 (cris-arit sub SI Rd j)
)

; Convenience macros for insns with a memory operand.
(define-pmacro
  (dni-cmt-attr-tim name comment attr syntax fmt semantics timing)
  "dni with memory-access"
  (dni name comment attr syntax
       ; Specifying MODE_INDIRECT and MODE_AUTOINCREMENT in this
       ; manner makes the autoincrementness handily available.
       ; It also effectively excludes non-memory use of dni-cmt.
       (.splice (.unsplice fmt) MODEMEMP_YES inc)
       semantics
       timing)
)

(define-pmacro (dni-cmt-attr name comment attr syntax fmt semantics)
  "dni with read memory-access timing"
  (dni-cmt-attr-tim name comment attr syntax fmt semantics
		    (cris-mem-timing))
)

(define-pmacro (dni-cmwt-attr  name comment attr syntax fmt semantics)
  "dni with write memory-access timing"
  (dni-cmt-attr-tim name comment attr syntax fmt semantics
		    (cris-mem-write-timing))
)

(define-pmacro QI-size 1)
(define-pmacro HI-size 2)
(define-pmacro SI-size 4)

(define-pmacro (cris-get-mem size regop)
  "Handle reading memory in <size>, with source address register\
 (read once, maybe set once) in <regop> or prefixed"
  (sequence
    size
    ((SI addr) (size tmp-mem) (BI postinc))

    ; Cache the incrementness of the operand.
    (set postinc inc)

    ; Get the address from somewhere.
    (set addr
	 (if SI (eq prefix-set 0)
	     ; If the insn was prefixed, it's in the prefix-register.
	     regop
	     prefixreg))

    ; Get the memory contents.
    (set tmp-mem (mem size addr))

    ; For non-prefixed post-increment, we increment the address by the
    ; size of the memory access.
    (if (ne postinc 0)
	(sequence
	  ()
	  (if (eq prefix-set 0)
	      (set addr (add addr (.sym size -size))))
	  ; Update the source-register for post-increments.
	  (set regop addr)))

    ; Don't forget the return-value.
    tmp-mem)
)

(define-pmacro (cris-set-mem size regop value)
  "Handle writing <value> of <size> to memory, with memory address register\
 (read once, maybe set once) in <regop> or prefixed."
  (sequence
    ((SI addr) (BI postinc))

    ; Cache the incrementness of the operand.
    (set postinc inc)

    ; Get the address from somewhere.
    (set addr
	 (if SI (eq prefix-set 0)
	     ; If the insn was prefixed, it's in the prefix-register.
	     regop
	     prefixreg))

    ; Set the memory contents.  Integral-write semantics apply.
    ; FIXME: currently v32 only; when proper semantics needed, fix v10.
    (if (andif current-mach-is-v32 (ne xbit 0))
	(if (eq pbit 0)
	    (sequence
	      ()
	      (set (mem size addr) value)
	      (set cbit 0))
	    (set cbit 1))
	(set (mem size addr) value))

    ; For non-prefixed post-increment, we increment the address by the
    ; size of the memory access.  As for the integral-write, this needs to
    ; be tweaked for pre-v32: increment should have been performed if
    ; there's a fault at the memory access above.
    (if (ne postinc 0)
	(sequence
	  ()
	  (if (eq prefix-set 0)
	      (set addr (add addr (.sym size -size))))
	  ; Update the source-register for post-increments.
	  (set regop addr))))
)

(define-pmacro
  (dni-cmt-bwd-attr-tim name comment attr syntax fmt fsem timing)
  "Core generator macro for insns with <op>.b, <op>.w and <op>.d variants\
 and a memory operand."
  (begin
    (dni-cmt-attr-tim
     (.sym name .b-m)
     (.str "byte mem " comment)
     attr
     (.str name ".b " syntax)
     (.splice (.unsplice fmt) SIZE_BYTE)
     (fsem QI)
     timing)
    (dni-cmt-attr-tim
     (.sym name .w-m)
     (.str "word mem " comment)
     attr
     (.str name ".w " syntax)
     (.splice (.unsplice fmt) SIZE_WORD)
     (fsem HI)
     timing)
    (dni-cmt-attr-tim
     (.sym name .d-m)
     (.str "dword mem " comment)
     attr
     (.str name ".d " syntax)
     (.splice (.unsplice fmt) SIZE_DWORD)
     (fsem SI)
     timing))
)

; Further refinement macros.
(define-pmacro (dni-cmt-bwd-attr name comment attr syntax fmt fsem)
  (dni-cmt-bwd-attr-tim name comment attr syntax fmt fsem
			(cris-mem-timing))
)

(define-pmacro (dni-cmwt-bwd name comment syntax fmt fsem)
  (dni-cmt-bwd-attr-tim name comment () syntax fmt fsem
			(cris-mem-write-timing))
)

(define-pmacro (dni-cmt-bwd name comment syntax fmt fsem)
  (dni-cmt-bwd-attr name comment () syntax fmt fsem)
)

(define-pmacro (dni-cmt-sbw name comment syntax fmt fsem)
  "Core generator macro for insns with <op>.b and <op>.w variants\
 and a signed memory operand."
  (begin
    (dni-cmt-attr
     (.sym name .b-m) (.str "byte mem " comment)
     ()
     (.str name ".b " syntax)
     (.splice (.unsplice fmt) SIGNED_BYTE)
     (fsem QI))
    (dni-cmt-attr
     (.sym name .w-m) (.str "word mem " comment)
     ()
     (.str name ".w " syntax)
     (.splice (.unsplice fmt) SIGNED_WORD)
     (fsem HI)))
)

(define-pmacro (dni-cmt-ubw name comment syntax fmt fsem)
  "Core generator macro for insns with <op>.b and <op>.w variants\
 and an unsigned memory operand."
  (begin
    (dni-cmt-attr
     (.sym name .b-m) (.str "byte mem " comment)
     ()
     (.str name ".b " syntax)
     (.splice (.unsplice fmt) UNSIGNED_BYTE)
     (fsem QI))
    (dni-cmt-attr
     (.sym name .w-m) (.str "word mem " comment)
     ()
     (.str name ".w " syntax)
     (.splice (.unsplice fmt) UNSIGNED_WORD)
     (fsem HI)))
)

; CMP.m   Rs,Rd           [ Rd | 011011mm | Rs ]
(dni-cdt-bwd
 cmp-r "compare register to register"
 "$Rs,$Rd"
 (+ Rd MODE_REGISTER R_CMP Rs)
 (.pmacro
  (BWD)
  (cris-arit6-int
   sub BWD (.pmacro (sz regno val) (nop)) 0
   Rd Rs cbit cbit))
)

; CMP.m   [Rs],Rd         [ Rd | 101011mm | Rs ]
; CMP.m   [Rs+],Rd        [ Rd | 111011mm | Rs ]
(dni-cmt-bwd
 cmp-m "compare memory to register"
 "[${Rs}${inc}],${Rd}"
 (+ INDIR_CMP Rs Rd)
 (.pmacro
  (BWD)
  (cris-arit6-int
   sub BWD (.pmacro (sz regno val) (nop)) 0
   Rd (cris-get-mem BWD Rs) cbit cbit))
)

; (CMP.m   [PC+],Rd        [ Rd | 111011mm | 1111 ])
(dni-c-QI
 cmpcbr "cmp constant byte to register"
 "cmp.b $sconst8,$Rd"
 (+ Rd MODE_AUTOINCREMENT INDIR_CMP SIZE_BYTE (f-source 15) sconst8)
 (cris-arit6-int
  sub QI (.pmacro (sz regno val) (nop)) 0
  Rd (trunc QI sconst8) cbit cbit)
)

(dni-c-HI
 cmpcwr "cmp constant word to register"
 "cmp.w $sconst16,$Rd"
 (+ Rd MODE_AUTOINCREMENT INDIR_CMP SIZE_WORD (f-source 15) sconst16)
 (cris-arit6-int
  sub HI (.pmacro (sz regno val) (nop)) 0
  Rd (trunc HI sconst16) cbit cbit)
)

(dni-c-SI
 cmpcdr "cmp constant dword to register"
 "cmp.d $const32,$Rd"
 (+ Rd MODE_AUTOINCREMENT INDIR_CMP SIZE_DWORD (f-source 15) const32)
 (cris-arit6-int
  sub SI (.pmacro (sz regno val) (nop)) 0
  Rd const32 cbit cbit)
)

; CMPQ    i,Rd            [ Rd | 001011 | i ]
(dni-cdt
 cmpq "cmpq i,Rd"
 "cmpq $i,$Rd"
 (+ Rd MODE_QUICK_IMMEDIATE Q_CMPQ i)
 (cris-arit6-int
  sub SI (.pmacro (sz regno val) (nop)) 0
  Rd i cbit cbit)
)

; CMPS.z  [Rs],Rd         [ Rd | 1000111z | Rs ]
; CMPS.z  [Rs+],Rd        [ Rd | 1100111z | Rs ]
(dni-cmt-sbw
 cmps-m "cmp sign-extended from memory to register"
 "[${Rs}${inc}],$Rd"
 (+ Rd INDIR_CMPX Rs)
 (.pmacro
  (BW)
  (cris-arit6-int
   sub SI (.pmacro (sz regno val) (nop)) 0
   Rd ((.sym BW -ext) (cris-get-mem BW Rs)) cbit cbit))
)

; (CMPS.z  [PC+],Rd        [ Rd | 1100111z | 1111 ])
(dni-c-QI
 cmpscbr "cmp sign-extended constant byte to register"
 "[${Rs}${inc}],$Rd"
 (+ Rd MODE_AUTOINCREMENT INDIR_CMPX SIGNED_BYTE (f-source 15) sconst8)
 (cris-arit6-int
  sub SI (.pmacro (sz regno val) (nop)) 0
  Rd (ext SI (trunc QI sconst8)) cbit cbit)
)
(dni-c-HI
 cmpscwr "cmp sign-extended constant word to register"
 "[${Rs}${inc}],$Rd"
 (+ Rd MODE_AUTOINCREMENT INDIR_CMPX SIGNED_WORD (f-source 15) sconst16)
 (cris-arit6-int
  sub SI (.pmacro (sz regno val) (nop)) 0
  Rd (ext SI (trunc HI sconst16)) cbit cbit)
)

; CMPU.z  [Rs],Rd         [ Rd | 1000110z | Rs ]
; CMPU.z  [Rs+],Rd        [ Rd | 1100110z | Rs ]
(dni-cmt-ubw
 cmpu-m "cmp zero-extended from memory to register"
 "[${Rs}${inc}],$Rd"
 (+ Rd INDIR_CMPX Rs)
 (.pmacro
  (BW)
  (cris-arit6-int
   sub SI (.pmacro (sz regno val) (nop)) 0
   Rd ((.sym BW -zext) (cris-get-mem BW Rs)) cbit cbit))
)

; (CMPU.z  [PC+],Rd        [ Rd | 1100110z | 1111 ])
(dni-c-QI
 cmpucbr "cmp zero-extended constant byte to register"
 "[${Rs}${inc}],$Rd"
 (+ Rd MODE_AUTOINCREMENT INDIR_CMPX UNSIGNED_BYTE (f-source 15) uconst8)
 (cris-arit6-int
  sub SI (.pmacro (sz regno val) (nop)) 0
  Rd (zext SI (trunc QI uconst8)) cbit cbit)
)
(dni-c-HI
 cmpucwr "cmp zero-extended constant word to register"
 "[${Rs}${inc}],$Rd"
 (+ Rd MODE_AUTOINCREMENT INDIR_CMPX UNSIGNED_WORD (f-source 15) uconst16)
 (cris-arit6-int
  sub SI (.pmacro (sz regno val) (nop)) 0
  Rd (zext SI (trunc HI uconst16)) cbit cbit)
)

; MOVE.m  [Rs],Rd         [ Rd | 101001mm | Rs ]
; MOVE.m  [Rs+],Rd        [ Rd | 111001mm | Rs ]
(dni-cmt-bwd
 move-m "move from memory to register"
 "[${Rs}${inc}],${Rd}"
 (+ INDIR_MOVE_M_R Rs Rd)
 (.pmacro
  (BWD)
  (sequence
    ((SI tmp))
    (set tmp (cris-get-mem BWD Rs))
    (set-subreg-gr
     BWD
     (if SI (andif prefix-set (not inc)) (regno Rs) (regno Rd))
     tmp)
    (setf-move BWD tmp)))
)

; MOVS.z  [Rs],Rd         [ Rd | 1000011z | Rs ]
; MOVS.z  [Rs+],Rd        [ Rd | 1100011z | Rs ]
(dni-cmt-sbw
 movs-m "movs from memory to register"
 "[${Rs}${inc}],${Rd}"
 (+ INDIR_MOVX Rs Rd)
 (.pmacro
  (BW)
  (sequence
    ((SI tmp))
    (set tmp (ext SI (cris-get-mem BW Rs)))
    (if (andif prefix-set (not inc))
	(set Rs tmp)
	(set Rd tmp))
    (setf-move SI tmp)))
)

; MOVU.z  [Rs],Rd         [ Rd | 1000010z | Rs ]
; MOVU.z  [Rs+],Rd        [ Rd | 1100010z | Rs ]
(dni-cmt-ubw
 movu-m "movu from memory to register"
 "[${Rs}${inc}],${Rd}"
 (+ INDIR_MOVX Rs Rd)
 (.pmacro
  (BW)
  (sequence
    ((SI tmp))
    (set tmp (zext SI (cris-get-mem BW Rs)))
    (if (andif prefix-set (not inc))
	(set Rs tmp)
	(set Rd tmp))
    (setf-move SI tmp)))
)

; MOVE    Rs,Pd           [ Pd | 01100011 | Rs ]
(.splice
 begin
 (.unsplice
  (.map
   (.pmacro
    (VER)
    (dni
     (.sym move-r-spr VER)
     "Move from general register to special register"
     ((MACH (.sym cris VER)))
     "move ${Rs},${Pd}"
     (+ RFIX_MOVE_R_S MODE_REGISTER SIZE_FIXED Rs Pd)
     (sequence
       ((SI tmp) (SI rno))
       (set tmp Rs)
       (set rno (regno Pd))
       (cond
	; See reg-sr setter for most of the special-register semantics.
	; The sanity check for known read-only registers is for program
	; debug help; the real insn would be harmless and have no effect.
	; CGEN-FIXME: regno of symbolic h-sr names doesn't work here.
	((orif (orif (eq rno 0) (eq rno 1)) (orif (eq rno 4) (eq rno 8)))
	 (error "move-r-spr: trying to set a read-only special register"))
	(else (set Pd tmp)))
       (reset-x-p))
     (cris-reg-sr-timing)))
   (cris-cpu-models)))
)

(define-pmacro (dni-cdt-ver-attr name comment fattr syntax fmt fsem)
  "Generator for each MACH, using default timing."
  (.splice
   begin
   (.unsplice
    (.map
     (.pmacro (v) (dni-cdt-attr name comment (fattr v) syntax fmt (fsem v)))
     (cris-cpu-models))))
)

; MOVE    Ps,Rd           [ Ps | 01100111 | Rd ]
; Note that in the insn format, the Rd operand is in the Rs field (the
; Rd field by the definition used everywhere else is the Ps position in
; this insn).
; It gets a little weird here because we can't get this insn into a
; define-pmacro unless we make named pmacros for e.g. a separate attr
; function and a semantics function: a .pmacro can't refer to the
; parameters of the outer define-pmacro.  (The manual refers to this as
; not implementing "lexical scoping").
(.splice
 begin
 (.unsplice
  (.map
   (.pmacro
    (VER)
    (dni-cdt-attr
     (.sym move-spr-r VER)
     "Move from special register to general register"
     ((MACH (.sym cris VER)))
     "move ${Ps},${Rd-sfield}"
     (+ Ps RFIX_MOVE_S_R MODE_REGISTER SIZE_FIXED Rd-sfield)
     (sequence
       ((SI grno) (SI prno) (SI newval))
       (set prno (regno Ps))
       ; CGEN-FIXME: Can't use the following and then "grno" below because
       ; CGEN will emit a "tmp_grno" *also* in decodev32.c:crisv32f_decode
       ; (set grno (regno Rd-sfield))
       (set newval Ps)
       (.splice
	cond
	(.unsplice
	 (.map
	  (.pmacro
	   (r)
	   ((eq prno (.cadr2 r))
	    (set-subreg-gr (.car2 r) (regno Rd-sfield) newval)))
	  ((.sym cris-implemented-specregs- VER))))
	(else (error "move-spr-r from unimplemented register")))
       (reset-x-p))))
   (cris-cpu-models)))
)

; MOVE    Ps,PC           [ Ps | 01100111 | 1111 ]
; The move-special-register-to-pc insns are return-type instructions and
; have to be special-cased to get the delay-slot and avoid being indicated
; as invalid.
(dni-cdt-attr
 ret-type
 "ret-type"
 (MACH-PC)
 "ret/reti/retb"
 (+ Ps MODE_REGISTER RFIX_MOVE_S_R SIZE_FIXED (f-source 15))
 (sequence
   ((SI retaddr))
   (set retaddr Ps)
   (reset-x-p)
   (delay 1 (set pc retaddr)))
)

; MOVE    [Rs],Pd         [ Pd | 10100011 | Rs ]
; MOVE    [Rs+],Pd        [ Pd | 11100011 | Rs ]
; We make variants that loads constants or memory for each MACH version,
; since each consider some subset of the "special registers" to have
; different sizes.  FIXME: Should be able to simplify this.
(.splice
 begin
 (.unsplice
  (.map
   (.pmacro
    (VER)
    (dni
     (.sym move-m-spr VER)
     "Move from memory to special register"
     ((MACH (.sym cris VER)))
     "move [${Rs}${inc}],${Pd}"
     (+ Pd INFIX_MOVE_M_S MODEMEMP_YES inc SIZE_FIXED Rs)
     (sequence
       ((SI rno) (SI newval))
       (set rno (regno Pd))
       (.splice
	cond
	; No sanity check for constant special register here, since the
	; memory read side-effect or post-increment may be the goal, or
	; for pre-v32 a prefix assignment side-effect.
	(.unsplice
	 (.map
	  (.pmacro
	   (r)
	   ((eq rno (.cadr2 r))
	    (set newval ((.sym (.car2 r) -ext) (cris-get-mem (.car2 r) Rs)))))
	  ((.sym cris-implemented-specregs- VER))))
	(else (error "Trying to set unimplemented special register")))
       (set Pd newval)
       (reset-x-p))
     (cris-mem-sr-timing)))
   (cris-cpu-models)))
)

(define-pmacro QI-operand sconst8)
(define-pmacro HI-operand sconst16)
(define-pmacro SI-operand const32)

(define-pmacro
  (cris-move-c-spr VER VERFN)
  "Generator for loading constant into special register"
  (.splice
   begin
   (.unsplice
    (.map
     (.pmacro
      (srdef v)
      (dni
       (.sym move-c-spr v -p (.cadr2 srdef))
       (.str "Move constant to special register p" (.cadr2 srdef))
       ((MACH (.sym cris v)))
       (.str "move ${" (.sym (.car2 srdef) -operand) "},${Pd}")
       ; We use Pd in semantics without naming it in the format (which
       ; would CGEN-FIXME: cause a CGEN error for some reason, likely
       ; related to specifying an insn field multiple times).  This
       ; currently works and is guarded with test-cases (specifically
       ; wrt. the timing model) but may need to be tweaked in the future.
       ; Note that using instead (ifield f-dest) causes incorrect timing
       ; model to be generated; the timing model requires that Pd is set.
       (+ (f-dest (.cadr2 srdef)) MODE_AUTOINCREMENT INFIX_MOVE_M_S SIZE_FIXED
	  (f-source 15) (.sym (.car2 srdef) -operand))
       (sequence
	 ()
	 (set Pd (.sym (.car2 srdef) -operand)) ; (reg h-sr (.cadr2 srdef))
	 (reset-x-p))
       ((.sym cris-timing-const-sr- (.car2 srdef)))))
     ((.sym cris-implemented-specregs-const- VER))
     (.map VERFN ((.sym cris-implemented-specregs-const- VER))))))
)

; CGEN-FIXME:
; Unfortunately we can't iterate over the list of models due to the
; problem with referring to the parameters of a surrounding pmacro from
; within an enclosed .pmacro (perhaps related to "lexical scoping").
; We get e.g. 'insn already defined:: (move-c-sprvn-p0)' with this:
;(.splice
; begin (.unsplice (.map (.pmacro (vn) (cris-move-c-spr vn (.pmacro (x) vn)))
;			(cris-cpu-models)))
;)
(cris-move-c-spr v0 (.pmacro (x) v0))
(cris-move-c-spr v3 (.pmacro (x) v3))
(cris-move-c-spr v8 (.pmacro (x) v8))
(cris-move-c-spr v10 (.pmacro (x) v10))
(cris-move-c-spr v32 (.pmacro (x) v32))

; MOVE    Ps,[Rd]         [ Ps | 10100111 | Rd ]
; MOVE    Ps,[Rd+]        [ Ps | 11100111 | Rd ]
(.splice
 begin
 (.unsplice
  (.map
   (.pmacro
    (VER)
    (dni-cmwt-attr
     (.sym move-spr-m VER)
     "Move from special register to memory"
     ((MACH (.sym cris VER)))
     "move ${Ps},[${Rd-sfield}${inc}]"
     (+ INFIX_MOVE_S_M SIZE_FIXED Rd-sfield Ps)
     (sequence
       ((SI rno))
       (set rno (regno Ps))
       (.splice
	cond
	(.unsplice
	 (.map
	  (.pmacro
	   (r)
	   ((eq rno (.cadr2 r))
	    (cris-set-mem (.car2 r) Rd-sfield Ps)))
	  ((.sym cris-implemented-specregs- VER))))
	(else (error "write from unimplemented special register")))
       (reset-x-p))))
   (cris-cpu-models)))
)

; SBFS [Rs(+)]
;  Instruction format:     |0 0 1 1 1 m 1 1 0 1 1 1| Dest. |
(dni-cdt-attr
 sbfs
 "sbfs"
 ((MACH crisv10))
 "sbfs [${Rd-sfield}${inc}]"
 (+ (f-dest 3) INFIX_SBFS SIZE_FIXED MODEMEMP_YES inc Rd-sfield)
 (error "SBFS isn't implemented")
)

;  MOVE    Ss,Rd            [ Ss | 11110111 | Rd ]
(dni-cdt-attr
 move-ss-r
 "move from support register to general register"
 (MACH-V32)
 "move ${Ss},${Rd-sfield}"
 (+ Ss INFIX_MOVE_SS SIZE_FIXED (f-mode 3) Rd-sfield)
 (sequence
   ()
   (set Rd-sfield Ss)
   (reset-x-p))
)

; MOVE    Rs,Sd            [ Sd | 10110111 | Rs ]
(dni-cdt-attr
 move-r-ss
 "move from general register to support register"
 (MACH-V32)
 "move ${Rs},${Sd}"
 (+ Sd INFIX_MOVE_SS SIZE_FIXED (f-mode 2) Rs)
 (sequence
   ()
   (set Sd Rs)
   (reset-x-p))
)

; MOVEM   Rs,[Rd]         [ Rs | 10111111 | Rd ]
; MOVEM   Rs,[Rd+]        [ Rs | 11111111 | Rd ]

(define-pmacro (movem-to-mem-step regn)
  ; Without the SI attribute, UINT is generated, which isn't supported by
  ; the sim framework.
  (if (ge SI (regno Rs-dfield) regn)
      (sequence
	((SI tmp))
	(set tmp (reg h-gr regn))
	(set (mem SI addr) tmp)
	(set addr (add addr 4))))
)

(dni
 movem-r-m
 "movem to memory"
 (MACH-PRE-V32)
 "movem ${Rs-dfield},[${Rd-sfield}${inc}]"
 (+ INFIX_MOVEM_R_M MODEMEMP_YES inc SIZE_FIXED Rs-dfield Rd-sfield)
 (sequence
   ((SI addr) (BI postinc))
   ; FIXME: A copy of what's in cris-get-mem.

   ; Cache the incrementness of the operand.
   (set postinc inc)

   ; CGEN-FIXME: Kludge to work around a CGEN bug: it doesn't see that
   ; Rs-dfield is used as an input, causing the timing model to be wrong.
   (sequence ((SI dummy)) (set dummy Rs-dfield))

   ; Get the address from somewhere.  If the insn was prefixed, it's in
   ; the prefix-register.
   (set addr
	(if SI (eq prefix-set 0)
	    Rd-sfield
	    prefixreg))

   (.splice
    sequence ()
    (.unsplice (.map movem-to-mem-step (.iota 16 15 -1))))

   ; Update the source-register for post-increments.
   (if (ne postinc 0)
       (set Rd-sfield
	    (if SI (eq prefix-set 0) addr prefixreg)))
   (reset-x-p))
   (simplecris-movem-timing)
)

(dni
 movem-r-m-v32
 "movem to memory"
 (MACH-V32)
 "movem ${Rs-dfield},[${Rd-sfield}${inc}]"
 (+ INFIX_MOVEM_R_M MODEMEMP_YES inc SIZE_FIXED Rs-dfield Rd-sfield)
 (sequence
   ((SI addr) (BI postinc))
   ; FIXME: Mostly a copy of what's in cris-get-mem.

   ; Cache the incrementness of the operand.
   (set postinc inc)

   ; CGEN-FIXME: See movem-r-m.
   (sequence ((SI dummy)) (set dummy Rs-dfield))

   (set addr Rd-sfield)

   (.splice
    sequence ()
    (.unsplice (.map movem-to-mem-step (.iota 16))))

   ; Update the source-register for post-increments.
   (if (ne postinc 0)
       (set Rd-sfield addr))
   (reset-x-p))
 ; Unit u-mem must be specified before the u-movem-* for memory address
 ; register stall count to be right.
 ((crisv32 (unit u-mem) (unit u-movem-rtom) (unit u-exec-movem)
	   (unit u-mem-w)))
)

; MOVEM   [Rs],Rd         [ Rd | 10111011 | Rs ]
; MOVEM   [Rs+],Rd        [ Rd | 11111011 | Rs ]

(define-pmacro
  (movem-to-reg-step regn)
  ; Without the SI attribute, UINT is generated, which isn't supported by
  ; the sim framework.
  (if (ge SI (regno Rd) regn)
      (sequence
	((SI tmp))
	(set tmp (mem SI addr))
	(set (reg h-gr regn) tmp)
	(set addr (add addr 4))))
)

(dni
 movem-m-r
 "movem to register"
 (MACH-PRE-V32)
 "movem [${Rs}${inc}],${Rd}"
 (+ Rd INFIX_MOVEM_M_R MODEMEMP_YES inc SIZE_FIXED Rs)
 (sequence
   ((SI addr) (BI postinc))
   ; FIXME: Mostly a copy of what's in cris-get-mem.

   ; Cache the incrementness of the operand.
   (set postinc inc)

   ; Get the address from somewhere.  If the insn was prefixed, it's in
   ; the prefix-register.
   (set addr
	(if SI (eq prefix-set 0)
	    Rs
	    prefixreg))

   ; CGEN-FIXME: See movem-r-m.
   (sequence ((SI dummy)) (set dummy Rd))

   (.splice
    sequence ()
    ; The first movem step is left out because it can't happen; it's for
    ; PC destination.  See the pattern below.
    (.unsplice (.map movem-to-reg-step (.iota 15 14 -1))))

   ; Update the source-register for post-increments.
   ; FIXME: No postinc-prefixed for v0 IIRC.
   (if (ne postinc 0)
       (set Rs (if SI (eq prefix-set 0) addr prefixreg)))
   (reset-x-p))
   (simplecris-movem-timing)
)

; (MOVEM   [Rs],PC         [ 1111 | 10111011 | Rs ])
; (MOVEM   [Rs+],PC        [ 1111 | 11111011 | Rs ])
; We have to special-case it for PC destination; used in longjump.
; We shouldn't *have* to special-case it; the main reason is (FIXME:)
; misgeneration of the simulator when the PC case is folded into the
; generic PRE-V32 movem; possibly related to then being a COND-CTI rather
; than an UNCOND-CTI.
(dni-cmt-attr
 movem-m-pc
 "movem to register, ending with PC"
 (MACH-PRE-V32)
 "movem [${Rs}${inc}],${Rd}"
 (+ (f-dest 15) INFIX_MOVEM_M_R SIZE_FIXED Rs)
 (sequence
   ((SI addr) (BI postinc))
   ; FIXME: Mostly a copy of what's in cris-get-mem.

   ; Cache the incrementness of the operand.
   (set postinc inc)

   ; Get the address from somewhere.  If the insn was prefixed, it's in
   ; the prefix-register.
   (set addr
	(if SI (eq prefix-set 0)
	    Rs
	    prefixreg))

   ; FIXME: Add kludge here too *and* a test-case.

   (.splice
    sequence ()
    ; The first movem step is for PC destination, used in longjmp.
    (set pc (mem SI addr))
    (set addr (add addr 4))
    (.unsplice
     (.map
      (.pmacro
       (regn)
       (sequence
	 ((SI tmp))
	 (set tmp (mem SI addr))
	 (set (reg h-gr regn) tmp)
	 (set addr (add addr 4))))
      (.iota 15 14 -1))))

   ; Update the source-register for post-increments.
   ; FIXME: No postinc-prefixed for v0.
   (if (ne postinc 0)
       (set Rs (if SI (eq prefix-set 0) addr prefixreg)))
   (reset-x-p))
)

(dni
 movem-m-r-v32
 "movem to register"
 (MACH-V32)
 "movem [${Rs}${inc}],${Rd}"
 (+ INFIX_MOVEM_M_R MODEMEMP_YES inc SIZE_FIXED Rs Rd)
 (sequence
   ((SI addr) (BI postinc))
   ; FIXME: A copy of what's in cris-get-mem

   ; Cache the incrementness of the operand.
   (set postinc inc)

   ; Get the address from somewhere.
   (set addr Rs)

   ; CGEN-FIXME: See movem-r-m.
   (sequence ((SI dummy)) (set dummy Rd))

   (.splice
    sequence ()
    (.unsplice (.map movem-to-reg-step (.iota 16))))

   ; Update the source-register for post-increments.
   ; FIXME: No postinc-prefixed for v0 IIRC.
   (if (ne postinc 0)
       (set Rs addr))
   (reset-x-p))
 ; u-mem must be specified before the u-movem-* for memory source
 ; register stall count to be right.
 ((crisv32 (unit u-mem) (unit u-mem-r) (unit u-movem-mtor)
	   (unit u-exec-movem)))
)

; ADD.m   Rs,Rd           [ Rd | 011000mm | Rs ]
(dni-cdt-bwd
 add "add from register to register"
 "$Rs,$Rd"
 (+ Rd MODE_REGISTER R_ADD Rs)
 (.pmacro (BWD) (cris-arit add BWD Rd Rs))
)

; ADD.m   [Rs],Rd         [ Rd | 101000mm | Rs ]
; ADD.m   [Rs+],Rd        [ Rd | 111000mm | Rs ]
(dni-cmt-bwd
 add-m "add from memory to register"
 "[${Rs}${inc}],${Rd}"
 (+ INDIR_ADD Rs Rd)
 (.pmacro (BWD) (cris-arit-3op add BWD Rd (cris-get-mem BWD Rs) Rs))
)
; (ADD.m   [PC+],Rd        [ Rd | 111000mm | 1111 ])
(dni-c-QI
 addcbr "add constant byte to register"
 "add.b ${sconst8}],${Rd}"
 (+ Rd MODE_AUTOINCREMENT INDIR_ADD SIZE_BYTE (f-source 15) sconst8)
 (cris-arit add QI Rd sconst8)
)

(dni-c-HI
 addcwr "add constant word to register"
 "add.w ${sconst16}],${Rd}"
 (+ Rd MODE_AUTOINCREMENT INDIR_ADD SIZE_WORD (f-source 15) sconst16)
 (cris-arit add HI Rd sconst16)
)

(dni-c-SI
 addcdr "add constant dword to register"
 "add.d ${const32}],${Rd}"
 (+ Rd MODE_AUTOINCREMENT INDIR_ADD SIZE_DWORD (f-source 15) const32)
 (cris-arit add SI Rd const32)
)

; (ADD.D   [PC+],PC        [ 1111 | 11100010 | 1111 ])
; This insn is used for DSO-local jumps in PIC code.
(dni
 addcpc "Relative jump by adding constant to PC"
 (MACH-PC)
 "add.d ${sconst32},PC"
 (+ (f-dest 15) MODE_AUTOINCREMENT INDIR_ADD SIZE_DWORD (f-source 15) const32)
 (sequence
   ((SI newpc) (SI oldpc) (SI offs))
   (set offs const32)
   (set oldpc (add SI pc 6))
   (set newpc (add SI oldpc offs))
   (set pc newpc)
   (setf-arit SI add oldpc offs newpc cbit))
 (simplecris-common-timing ((unit u-const32) (unit u-stall) (unit u-exec)))
)

; ADDS.z  Rs,Rd           [ Rd | 0100001z | Rs ]
(dni-cdt-sbw
 adds "add sign-extended from register to register"
 "$Rs,$Rd"
 (+ Rd MODE_REGISTER R_ADDX Rs)
 (.pmacro (BW) (cris-arit add SI Rd ((.sym BW -ext) (trunc BW Rs))))
)

; ADDS.z  [Rs],Rd         [ Rd | 1000001z | Rs ]
; ADDS.z  [Rs+],Rd        [ Rd | 1100001z | Rs ]
(dni-cmt-sbw
 adds-m "add sign-extended from memory to register"
 "[${Rs}${inc}],$Rd"
 (+ Rd INDIR_ADDX Rs)
 (.pmacro (BW) (cris-arit-3op add SI Rd ((.sym BW -ext) (cris-get-mem BW Rs)) Rs))
)

; (ADDS.z  [PC+],Rd        [ Rd | 1100001z | 1111 ])
(dni-c-QI
 addscbr "add sign-extended constant byte to register"
 "[${Rs}${inc}],$Rd"
 (+ Rd MODE_AUTOINCREMENT INDIR_ADDX SIGNED_BYTE (f-source 15) sconst8)
 (cris-arit add SI Rd (ext SI (trunc QI sconst8)))
)
(dni-c-HI
 addscwr "add sign-extended constant word to register"
 "[${Rs}${inc}],$Rd"
 (+ Rd MODE_AUTOINCREMENT INDIR_ADDX SIGNED_WORD (f-source 15) sconst16)
 (cris-arit add SI Rd (ext SI (trunc HI sconst16)))
)

; (ADDS.w  [],PC         [ 1111 | 10000011 | 1111 ])
; For a PC destination, we support only the two-operand case
; (dest == src), which is used in switch/case statements.
; FIXME: Should implement ADD.D [PC],PC and ADDS.B [PC],PC for use if/when
; implementing CASE_VECTOR_SHORTEN_MODE.
(dni
 addspcpc "add sign-extended prefixed arg to PC"
 (MACH-PC)
 "adds.w [PC],PC"
 (+ (f-dest 15) MODE_INDIRECT INDIR_ADDX SIGNED_WORD (f-source 15))
 (sequence
   ((SI newpc) (SI oldpc) (HI offs))
   (if (not prefix-set)
       (error "Unexpected adds.w [PC],PC without prefix"))
   ; We don't use cris-get-mem but instead special-case this one, since we
   ; have most instruction fields fixed where cris-get-mem expects
   ; field-parametrization by certain names.
   (set offs (mem HI prefixreg))
   (set oldpc (add SI pc 2))
   (set newpc (add SI oldpc offs))
   (set pc newpc)
   (setf-arit SI add oldpc (ext SI offs) newpc cbit))
 (simplecris-common-timing ((unit u-mem) (unit u-stall) (unit u-exec)))
)

; ADDU.z  Rs,Rd           [ Rd | 0100000z | Rs ]
(dni-cdt-ubw
 addu "add zero-extended from register to register"
 "$Rs,$Rd"
 (+ Rd MODE_REGISTER R_ADDX Rs)
 (.pmacro (BW) (cris-arit add SI Rd ((.sym BW -zext) (trunc BW Rs))))
)

; ADDU.z  [Rs],Rd         [ Rd | 1000000z | Rs ]
; ADDU.z  [Rs+],Rd        [ Rd | 1100000z | Rs ]
(dni-cmt-ubw
 addu-m "add zero-extended from memory to register"
 "[${Rs}${inc}],$Rd"
 (+ Rd INDIR_ADDX Rs)
 (.pmacro (BW)
	  (cris-arit-3op add SI Rd ((.sym BW -zext) (cris-get-mem BW Rs)) Rs))
)

; (ADDU.z  [PC+],Rd        [ Rd | 1100000z | 1111 ])
(dni-c-QI
 adducbr "add zero-extended constant byte to register"
 "[${Rs}${inc}],$Rd"
 (+ Rd MODE_AUTOINCREMENT INDIR_ADDX UNSIGNED_BYTE (f-source 15) sconst8)
 (cris-arit add SI Rd (zext SI (trunc QI sconst8)))
)
(dni-c-HI
 adducwr "add zero-extended constant word to register"
 "[${Rs}${inc}],$Rd"
 (+ Rd MODE_AUTOINCREMENT INDIR_ADDX UNSIGNED_WORD (f-source 15) sconst16)
 (cris-arit add SI Rd (zext SI (trunc HI sconst16)))
)

; SUB.m   Rs,Rd           [ Rd | 011010mm | Rs ]
(dni-cdt-bwd
 sub "subtract from register to register"
 "$Rs,$Rd"
 (+ Rd MODE_REGISTER R_SUB Rs)
 (.pmacro (BWD) (cris-arit sub BWD Rd Rs))
)

; SUB.m   [Rs],Rd         [ Rd | 101010mm | Rs ]
; SUB.m   [Rs+],Rd        [ Rd | 111010mm | Rs ]
(dni-cmt-bwd
 sub-m "subtract from memory to register"
 "[${Rs}${inc}],${Rd}"
 (+ INDIR_SUB Rs Rd)
 (.pmacro (BWD) (cris-arit-3op sub BWD Rd (cris-get-mem BWD Rs) Rs))
)

; (SUB.m   [PC+],Rd        [ Rd | 111010mm | 1111 ]
(dni-c-QI
 subcbr "subtract constant byte from register"
 "sub.b ${sconst8}],${Rd}"
 (+ Rd MODE_AUTOINCREMENT INDIR_SUB SIZE_BYTE (f-source 15) sconst8)
 (cris-arit sub QI Rd sconst8)
)

(dni-c-HI
 subcwr "subtract constant word from register"
 "sub.w ${sconst16}],${Rd}"
 (+ Rd MODE_AUTOINCREMENT INDIR_SUB SIZE_WORD (f-source 15) sconst16)
 (cris-arit sub HI Rd sconst16)
)

(dni-c-SI
 subcdr "subtract constant dword from register"
 "sub.d ${const32}],${Rd}"
 (+ Rd MODE_AUTOINCREMENT INDIR_SUB SIZE_DWORD (f-source 15) const32)
 (cris-arit sub SI Rd const32)
)

; SUBS.z  Rs,Rd           [ Rd | 0100101z | Rs ]
(dni-cdt-sbw
 subs "sub sign-extended from register to register"
 "$Rs,$Rd"
 (+ Rd MODE_REGISTER R_SUBX Rs)
 (.pmacro (BW) (cris-arit sub SI Rd ((.sym BW -ext) (trunc BW Rs))))
)

; SUBS.z  [Rs],Rd         [ Rd | 1000101z | Rs ]
; SUBS.z  [Rs+],Rd        [ Rd | 1100101z | Rs ]
(dni-cmt-sbw
 subs-m "sub sign-extended from memory to register"
 "[${Rs}${inc}],$Rd"
 (+ Rd INDIR_SUBX Rs)
 (.pmacro (BW)
	  (cris-arit-3op sub SI Rd ((.sym BW -ext) (cris-get-mem BW Rs)) Rs))
)

; (SUBS.z  [PC+],Rd        [ Rd | 1100101z | 1111 ])
(dni-c-QI
 subscbr "sub sign-extended constant byte to register"
 "[${Rs}${inc}],$Rd"
 (+ Rd MODE_AUTOINCREMENT INDIR_SUBX SIGNED_BYTE (f-source 15) sconst8)
 (cris-arit sub SI Rd (ext SI (trunc QI sconst8)))
)
(dni-c-HI
 subscwr "sub sign-extended constant word to register"
 "[${Rs}${inc}],$Rd"
 (+ Rd MODE_AUTOINCREMENT INDIR_SUBX SIGNED_WORD (f-source 15) sconst16)
 (cris-arit sub SI Rd (ext SI (trunc HI sconst16)))
)

; SUBU.z  Rs,Rd           [ Rd | 0100100z | Rs ]
(dni-cdt-ubw
 subu "sub zero-extended from register to register"
 "$Rs,$Rd"
 (+ Rd MODE_REGISTER R_SUBX Rs)
 (.pmacro (BW) (cris-arit sub SI Rd ((.sym BW -zext) (trunc BW Rs))))
)

; SUBU.z  [Rs],Rd         [ Rd | 1000100z | Rs ]
; SUBU.z  [Rs+],Rd        [ Rd | 1100100z | Rs ]
(dni-cmt-ubw
 subu-m "sub zero-extended from memory to register"
 "[${Rs}${inc}],$Rd"
 (+ Rd INDIR_SUBX Rs)
 (.pmacro (BW)
	  (cris-arit-3op sub SI Rd ((.sym BW -zext) (cris-get-mem BW Rs)) Rs))
)

; (SUBU.z  [PC+],Rd        [ Rd | 1100100z | 1111 ])
(dni-c-QI
 subucbr "sub zero-extended constant byte to register"
 "[${Rs}${inc}],$Rd"
 (+ Rd MODE_AUTOINCREMENT INDIR_SUBX UNSIGNED_BYTE (f-source 15) sconst8)
 (cris-arit sub SI Rd (zext SI (trunc QI sconst8)))
)
(dni-c-HI
 subucwr "sub zero-extended constant word to register"
 "[${Rs}${inc}],$Rd"
 (+ Rd MODE_AUTOINCREMENT INDIR_SUBX UNSIGNED_WORD (f-source 15) sconst16)
 (cris-arit sub SI Rd (zext SI (trunc HI sconst16)))
)

; ADDC    Rs,Rd           [ Rd | 01010111 | Rs ]
(dni-cdt-attr
 addc-r "addc from register to register"
 (MACH-V32)
 "addc $Rs,$Rd"
 (+ Rd MODE_REGISTER RFIX_ADDC SIZE_FIXED Rs)
 ; Since this is equivalent to "ax" plus "add.d Rs,Rd", we'll just do
 ; that, semantically.
 (sequence
   ()
   (set-quiet xbit 1)
   (cris-arit add SI Rd Rs))
)

; ADDC    [Rs],Rd         [ Rd | 10011010 | Rs ]
; ADDC    [Rs+],Rd        [ Rd | 11011010 | Rs ]
(dni-cmt-attr
 addc-m "addc from memory to register"
 (MACH-V32)
 "addc [${Rs}${inc}],${Rd}"
 (+ Rd INDIR_ADDC SIZE_DWORD Rs)
 (sequence
   ()
   (set-quiet xbit 1)
   (cris-arit add SI Rd (cris-get-mem SI Rs)))
)

; (ADDC    [Rs+],Rd        [ Rd | 11011010 | 1111 ])
(dni-c-SI-attr
 addc-c "addc constant to register"
 (MACH-V32)
 "addc ${const32},${Rd}"
 (+ Rd MODE_AUTOINCREMENT INDIR_ADDC SIZE_DWORD (f-source 15) const32)
 (sequence
   ()
   (set-quiet xbit 1)
   (cris-arit add SI Rd const32))
)

; LAPC   [PC+],Rd         [ Rd | 11010111 1111 ]
(dni-c-SI-attr
 lapc-d "lapc.d"
 (MACH-V32)
 "lapc.d ${const32-pcrel},${Rd}"
 (+ Rd MODE_AUTOINCREMENT INFIX_LAPC SIZE_FIXED (f-source 15) const32-pcrel)
 (sequence
   ()
   (set Rd const32-pcrel)
   (reset-x-p))
)

; LAPCQ  qo,Rd            [ Rd | 10010111 | qo ]
(dni-cdt-attr
 lapcq "lapcq"
 (MACH-V32)
 "lapcq ${qo},${Rd}"
 (+ Rd MODE_INDIRECT INFIX_LAPC SIZE_FIXED qo)
 (sequence
   ()
   (set Rd qo)
   (reset-x-p))
)

; ADDI    Rs.m,Rd         [ Rs | 010100mm | Rd ]
(dni-cdt-bwd
 addi "addi"
 "${Rs-dfield}.m,${Rd-sfield}"
 (+ Rd-sfield MODE_REGISTER R_ADDI Rs-dfield)
 (.pmacro
  (BWD)
  (sequence
    ()
    (set Rd-sfield (add SI Rd-sfield (mul Rs-dfield (.sym BWD -size))))
    (reset-x-p)))
)

;  NEG.m   Rs,Rd           [ Rd | 010110mm | Rs ]
(dni-cdt-bwd
 neg "neg.m Rs,Rd"
 "$Rs,$Rd"
 (+ Rd MODE_REGISTER R_NEG Rs)
 (.pmacro (BWD) (cris-arit3 sub BWD Rd 0 Rs))
)

; TEST.m  [Rs]            [ 0000101110mm | Rs ]
; TEST.m  [Rs+]           [ 0000111110mm | Rs ]
(dni-cmt-bwd
 test-m "test.m [Rs(+)]"
 "[${Rs}${inc}]"
 (+ (f-dest 0) INDIR_TEST Rs)
 (.pmacro
  (BWD)
  (sequence
    ((BWD tmpd))
    (set tmpd (cris-get-mem BWD Rs))
    ; This is supposed to be the same result as for cmpq 0,X, hence same code.
    (cris-arit6-int
     sub BWD (.pmacro (sz regno val) (nop)) 0 tmpd 0 cbit cbit)))
)

; MOVE.m  Rs,[Rd]         [ Rs | 101111mm | Rd ]
; MOVE.m  Rs,[Rd+]        [ Rs | 111111mm | Rd ]

(dni-cmwt-bwd
 move-r-m "move.m R,[]"
 "${Rs-dfield},[${Rd-sfield}${inc}]"
 (+ Rs-dfield INDIR_MOVE_R_M Rd-sfield)
 (.pmacro
  (BWD)
  (sequence
    ((BWD tmpd))
    (set tmpd Rs-dfield)
    (cris-set-mem BWD Rd-sfield tmpd)
    (reset-x-p)))
)

; MULS.m  Rs,Rd           [ Rd | 110100mm | Rs ]
(dni-bwd-attr
 muls "muls.m Rs,Rd"
 ((MACH crisv10,crisv32))
 "$Rs,$Rd"
 (+ Rd MODE_MULS INDIR_MUL Rs)
 (.pmacro
  (BWD)
  (sequence
    ((DI src1) (DI src2) (DI tmpr))
    (set src1 (ext DI (trunc BWD Rs)))
    (set src2 (ext DI (trunc BWD Rd)))
    (set tmpr (mul src1 src2))
    (set Rd (trunc SI tmpr))
    (set mof (trunc SI (srl tmpr 32)))
    (setf-arit DI muls src1 src2 tmpr cbit)))
 ((crisv10 (unit u-multiply) (unit u-exec))
  (crisv32 (unit u-multiply) (unit u-exec)))
)

; MULU.m  Rs,Rd           [ Rd | 100100mm | Rs ]
(dni-bwd-attr
 mulu "mulu.m Rs,Rd"
 ((MACH crisv10,crisv32))
 "$Rs,$Rd"
 (+ Rd MODE_MULU INDIR_MUL Rs)
 (.pmacro
  (BWD)
  (sequence
    ((DI src1) (DI src2) (DI tmpr))
    (set src1 (zext DI (trunc BWD Rs)))
    (set src2 (zext DI (trunc BWD Rd)))
    (set tmpr (mul src1 src2))
    (set Rd (trunc SI tmpr))
    (set mof (trunc SI (srl tmpr 32)))
    (setf-arit DI mulu src1 src2 tmpr cbit)))
 ((crisv10 (unit u-multiply) (unit u-exec))
  (crisv32 (unit u-multiply) (unit u-exec)))
)

; MCP     Ps,Rd           [ Ps | 01111111 | Rd ]
(dni-cdt-attr
 mcp "Multiply Carry Propagation"
 (MACH-V32)
 "mcp $Ps,$Rd"
 (+ Ps MODE_REGISTER RFIX_MCP SIZE_FIXED Rd-sfield)
 (sequence
   ()
   (set-quiet xbit 1)
   (set-quiet zbit 1)
   (cris-arit5 add SI Rd-sfield Rd-sfield Ps rbit rbit))
)

; DSTEP   Rs,Rd           [ Rd | 01101111 | Rs ]
(dni-cdt
 dstep "Division step"
 "dstep $Rs,$Rd"
 (+ Rd MODE_REGISTER RFIX_DSTEP SIZE_FIXED Rs)
 (sequence
   ((SI tmp) (SI tmps) (SI tmpd))
   (set tmps Rs)
   (set tmp (sll Rd 1))
   (set tmpd (if SI (geu tmp tmps) (sub tmp tmps) tmp))
   (set Rd tmpd)
   (setf-move SI tmpd))
)

;  ABS     Rs,Rd           [ Rd | 01101011 | Rs ]
(dni-cdt
 abs "Absolut Instruction"
 "abs $Rs,$Rd"
 (+ Rd MODE_REGISTER RFIX_ABS SIZE_FIXED Rs)
 (sequence
   ((SI tmpd))
   (set tmpd (abs Rs))
   (set Rd tmpd)
   (setf-move SI tmpd))
)

; AND.m   Rs,Rd           [ Rd | 011100mm | Rs ]
(dni-cdt-bwd
 and "And from register to register"
 "$Rs,$Rd"
 (+ Rd MODE_REGISTER R_AND Rs)
 (.pmacro
  (BWD)
  (sequence
    ((BWD tmpd))
    (set tmpd (and BWD Rd Rs))
    (set-subreg-gr BWD (regno Rd) tmpd)
    (setf-move BWD tmpd)))
)

; AND.m   [Rs],Rd         [ Rd | 101100mm | Rs ]
; AND.m   [Rs+],Rd        [ Rd | 111100mm | Rs ]
(dni-cmt-bwd
 and-m "And from memory to register"
 "[${Rs}${inc}],${Rd}"
 (+ INDIR_AND Rs Rd)
 (.pmacro
  (BWD)
  (sequence
    ((BWD tmpd))
    (set tmpd (and BWD Rd (cris-get-mem BWD Rs)))
    (set-subreg-gr
     BWD
     (if SI (andif prefix-set (not inc)) (regno Rs) (regno Rd))
     tmpd)
    (setf-move BWD tmpd)))
)

; (AND.m   [PC+],Rd        [ Rd | 111100mm | 1111 ])
(dni-c-QI
 andcbr "And constant byte to register"
 "and.b ${sconst8}],${Rd}"
 (+ Rd MODE_AUTOINCREMENT INDIR_AND SIZE_BYTE (f-source 15) sconst8)
 (sequence
   ((QI tmpd))
   (set tmpd (and QI Rd sconst8))
   (set-subreg-gr QI (regno Rd) tmpd)
   (setf-move QI tmpd))
)

(dni-c-HI
 andcwr "And constant word to register"
 "and.w ${sconst16}],${Rd}"
 (+ Rd MODE_AUTOINCREMENT INDIR_AND SIZE_WORD (f-source 15) sconst16)
 (sequence
   ((HI tmpd))
   (set tmpd (and HI Rd sconst16))
   (set-subreg-gr HI (regno Rd) tmpd)
   (setf-move HI tmpd))
)

(dni-c-SI
 andcdr "And constant dword to register"
 "and.d ${const32}],${Rd}"
 (+ Rd MODE_AUTOINCREMENT INDIR_AND SIZE_DWORD (f-source 15) const32)
 (sequence
   ((SI tmpd))
   (set tmpd (and SI Rd const32))
   (set-subreg-gr SI (regno Rd) tmpd)
   (setf-move SI tmpd))
)

; ANDQ    i,Rd            [ Rd | 001100 | i ]
(dni-cdt
 andq "And quick-immediate to register"
 "andq $i,$Rd"
 (+ Rd MODE_QUICK_IMMEDIATE Q_ANDQ i)
 (sequence
   ((SI tmpd))
   (set tmpd (and SI Rd i))
   (set-subreg-gr SI (regno Rd) tmpd)
   (setf-move SI tmpd))
)

; OR.m    Rs,Rd           [ Rd | 011101mm | Rs ]
(dni-cdt-bwd
 orr "Or from register to register"
 "$Rs,$Rd"
 (+ Rd MODE_REGISTER R_OR Rs)
 (.pmacro
  (BWD)
  (sequence
    ((BWD tmpd))
    (set tmpd (or BWD Rd Rs))
    (set-subreg-gr BWD (regno Rd) tmpd)
    (setf-move BWD tmpd)))
)

; OR.m    [Rs],Rd         [ Rd | 101101mm | Rs ]
; OR.m    [Rs+],Rd        [ Rd | 111101mm | Rs ]
(dni-cmt-bwd
 or-m "Or from memory to register"
 "[${Rs}${inc}],${Rd}"
 (+ INDIR_OR Rs Rd)
 (.pmacro
  (BWD)
  (sequence
    ((BWD tmpd))
    (set tmpd (or BWD Rd (cris-get-mem BWD Rs)))
    (set-subreg-gr
     BWD
     (if SI (andif prefix-set (not inc)) (regno Rs) (regno Rd))
     tmpd)
    (setf-move BWD tmpd)))
)

; (OR.m    [PC+],Rd        [ Rd | 111101mm | 1111 ])
(dni-c-QI
 orcbr "Or constant byte to register"
 "or.b ${sconst8}],${Rd}"
 (+ Rd MODE_AUTOINCREMENT INDIR_OR SIZE_BYTE (f-source 15) sconst8)
 (sequence
   ((QI tmpd))
   (set tmpd (or QI Rd sconst8))
   (set-subreg-gr QI (regno Rd) tmpd)
   (setf-move QI tmpd))
)

(dni-c-HI
 orcwr "Or constant word to register"
 "or.w ${sconst16}],${Rd}"
 (+ Rd MODE_AUTOINCREMENT INDIR_OR SIZE_WORD (f-source 15) sconst16)
 (sequence
   ((HI tmpd))
   (set tmpd (or HI Rd sconst16))
   (set-subreg-gr HI (regno Rd) tmpd)
   (setf-move HI tmpd))
)

(dni-c-SI
 orcdr "Or constant dword to register"
 "or.d ${const32}],${Rd}"
 (+ Rd MODE_AUTOINCREMENT INDIR_OR SIZE_DWORD (f-source 15) const32)
 (sequence
   ((SI tmpd))
   (set tmpd (or SI Rd const32))
   (set-subreg-gr SI (regno Rd) tmpd)
   (setf-move SI tmpd))
)

; ORQ     i,Rd            [ Rd | 001101 | i ]
(dni-cdt
 orq "Or quick-immediate to register"
 "orq $i,$Rd"
 (+ Rd MODE_QUICK_IMMEDIATE Q_ORQ i)
 (sequence
   ((SI tmpd))
   (set tmpd (or SI Rd i))
   (set-subreg-gr SI (regno Rd) tmpd)
   (setf-move SI tmpd))
)

; XOR     Rs,Rd           [ Rd | 01111011 | Rs ]
(dni-cdt
 xor "Xor from register to register"
 "xor $Rs,$Rd"
 (+ Rd MODE_REGISTER RFIX_XOR SIZE_FIXED Rs)
 (sequence
   ((SI tmpd))
   (set tmpd (xor SI Rd Rs))
   (set Rd tmpd)
   (setf-move SI tmpd))
)

(define-pmacro (swap-r x)
  "Perform bit-wise swap within each byte"
  (sequence
    SI
    ((SI tmpr))
    (set tmpr x)
    (or (sll (and tmpr #x1010101) 7)
	(or (sll (and tmpr #x2020202) 5)
	    (or (sll (and tmpr #x4040404) 3)
		(or (sll (and tmpr #x8080808) 1)
		    (or (srl (and tmpr #x10101010) 1)
			(or (srl (and tmpr #x20202020) 3)
			    (or (srl (and tmpr #x40404040) 5)
				(srl (and tmpr #x80808080) 7)))))))))
)

(define-pmacro (swap-b x)
  "Perform byte-wise swap within each word"
  (sequence
    SI
    ((SI tmpb))
    (set tmpb x)
    (or (and (sll tmpb 8) #xff00ff00)
	(and (srl tmpb 8) #xff00ff)))
)

(define-pmacro (swap-w x)
  "Perform word-wise swap within each dword"
  (sequence
    SI
    ((SI tmpb))
    (set tmpb x)
    (or (and (sll tmpb 16) #xffff0000)
	(and (srl tmpb 16) #xffff)))
)

(define-pmacro (swap-_ x)
  "Do nothing swap-wise"
  (error SI "SWAP without swap modifier isn't implemented")
)

(define-pmacro (swap-n x)
  "Perform bitwise not (that is, perform a not, not not perform)"
  (inv x)
)

(define-pmacro (swap-br x) "Combine swap-r and swap-b" (swap-r (swap-b x)))
(define-pmacro (swap-wr x) "Combine swap-r and swap-w" (swap-r (swap-w x)))
(define-pmacro (swap-wb x) "Combine swap-b and swap-w" (swap-b (swap-w x)))
(define-pmacro (swap-wbr x) "Combine swap-r and swap-wb" (swap-r (swap-wb x)))
(define-pmacro (swap-nr x) "Combine swap-r and swap-n" (swap-r (swap-n x)))
(define-pmacro (swap-nb x) "Combine swap-n and swap-b" (swap-b (swap-n x)))
(define-pmacro (swap-nbr x) "Combine swap-r and swap-nb" (swap-r (swap-nb x)))
(define-pmacro (swap-nw x) "Combine swap-n and swap-w" (swap-w (swap-n x)))
(define-pmacro (swap-nwr x) "Combine swap-r and swap-nw" (swap-r (swap-nw x)))
(define-pmacro (swap-nwb x) "Combine swap-b and swap-nw" (swap-b (swap-nw x)))
(define-pmacro (swap-nwbr x) "Combine swap-r and swap-nwb" (swap-r (swap-nwb x)))

(define-pmacro (cris-swap swapcode val)
  (sequence
    SI
    ((SI tmpcode) (SI tmpval) (SI tmpres))
    (set tmpcode swapcode)
    (set tmpval val)
    (.splice
     cond
     (.unsplice
      (.map
       (.pmacro
	(x-swapcode x-swap)
	((eq tmpcode x-swapcode)
	 (set tmpres ((.sym swap- x-swap) tmpval))))
       (.iota 16)
       (.splice _ (.unsplice cris-swap-codes)))))
    tmpres)
)

; NOT     Rd              alias for SWAPN Rd
(dni-cdt-attr
 not "Not"
 ((MACH crisv0,crisv3))
 "not ${Rs}"
 (+ (f-dest 8) RFIX_SWAP MODE_REGISTER SIZE_FIXED Rd-sfield)
 (sequence
   ((SI tmp) (SI tmpd))
   (set tmp Rd-sfield)
   (set tmpd (cris-swap 8 tmp))
   (set Rd-sfield tmpd)
   (setf-move SI tmpd))
)

; SWAP<option>    Rd      [ N W B R | 01110111 | Rd ]
(dni-cdt-attr
 swap "Swap"
 ((MACH crisv8,crisv10,crisv32))
 "swap${swapoption} ${Rs}"
 (+ swapoption RFIX_SWAP MODE_REGISTER SIZE_FIXED Rd-sfield)
 (sequence
   ((SI tmps) (SI tmpd))
   (set tmps Rd-sfield)
   (set tmpd (cris-swap swapoption tmps))
   (set Rd-sfield tmpd)
   (setf-move SI tmpd))
)

; ASR.m   Rs,Rd           [ Rd | 011110mm | Rs ]
(dni-cdt-bwd
 asrr "Arithmetic shift right register count"
 "$Rs,$Rd"
 (+ Rd MODE_REGISTER R_ASR Rs)
 (.pmacro
  (BWD)
  (sequence
    ((BWD tmpd) (SI cnt1) (SI cnt2))
    (set cnt1 Rs)
    (set cnt2 (if SI (ne (and cnt1 32) 0) 31 (and cnt1 31)))
    (set tmpd (sra SI (ext SI (trunc BWD Rd)) cnt2))
    (set-subreg-gr BWD (regno Rd) tmpd)
    (setf-move BWD tmpd)))
)

; ASRQ    c,Rd            [ Rd | 0011101 | c ]
(dni-cdt
 asrq "Arithmetic shift right quick-immediate count"
 "asrq $c,${Rd}"
 (+ Rd Q_ASHQ MODE_QUICK_IMMEDIATE (f-b5 1) c)
 (sequence
   ((SI tmpd))
   (set tmpd (sra Rd c))
   (set Rd tmpd)
   (setf-move SI tmpd))
)

; LSR.m   Rs,Rd           [ Rd | 011111mm | Rs ]
(dni-cdt-bwd
 lsrr "Logical shift right register count"
 "$Rs,$Rd"
 (+ Rd MODE_REGISTER R_LSR Rs)
 (.pmacro
  (BWD)
  (sequence
    ((SI tmpd) (SI cnt))
    (set cnt (and Rs 63))
    (set
     tmpd
     (if SI (ne (and cnt 32) 0)
	 0
	 (srl SI (zext SI (trunc BWD Rd)) (and cnt 31))))
    (set-subreg-gr BWD (regno Rd) tmpd)
    (setf-move BWD tmpd)))
)

; LSRQ    c,Rd            [ Rd | 0011111 | c ]
(dni-cdt
 lsrq "Logical shift right quick-immediate count"
 "lsrq $c,${Rd}"
 (+ Rd Q_LSHQ MODE_QUICK_IMMEDIATE (f-b5 1) c)
 (sequence
   ((SI tmpd))
   (set tmpd (srl Rd c))
   (set Rd tmpd)
   (setf-move SI tmpd))
)

; LSL.m   Rs,Rd           [ Rd | 010011mm | Rs ]
(dni-cdt-bwd
 lslr "Logical shift left register count"
 "$Rs,$Rd"
 (+ Rd MODE_REGISTER R_LSL Rs)
 (.pmacro
  (BWD)
  (sequence
    ((SI tmpd) (SI cnt))
    (set cnt (and Rs 63))
    (set
     tmpd
     (if SI (ne (and cnt 32) 0)
	 0
	 (sll SI (zext SI (trunc BWD Rd)) (and cnt 31))))
    (set-subreg-gr BWD (regno Rd) tmpd)
    (setf-move BWD tmpd)))
)

; LSLQ    c,Rd            [ Rd | 0011110 | c ]
(dni-cdt
 lslq "Logical shift left quick-immediate count"
 "lslq $c,${Rd}"
 (+ Rd Q_LSHQ MODE_QUICK_IMMEDIATE (f-b5 0) c)
 (sequence
   ((SI tmpd))
   (set tmpd (sll Rd c))
   (set Rd tmpd)
   (setf-move SI tmpd))
)

; BTST    Rs,Rd           [ Rd | 01001111 | Rs ]
(dni-cdt
 btst "Bit test register number"
 "$Rs,$Rd"
 (+ Rd MODE_REGISTER RFIX_BTST SIZE_FIXED Rs)
 (sequence
   ((SI tmpd) (SI cnt))
   (set tmpd (sll Rd (sub 31 (and Rs 31))))
   (setf-move SI tmpd))
)

; BTSTQ   c,Rd            [ Rd | 0011100 | c ]
(dni-cdt
 btstq "Bit test quick-immediate number"
 "btstq $c,${Rd}"
 (+ Rd Q_ASHQ MODE_QUICK_IMMEDIATE (f-b5 0) c)
 (sequence
   ((SI tmpd))
   (set tmpd (sll Rd (sub 31 c)))
   (setf-move SI tmpd))
)

; SETF    <list of flags> [ P U I X | 01011011 | N Z V C ]
(dni-cdt
 setf "Set condition code flags explicitly"
 "setf ${list-of-flags}"
 ; The zero-flags case gets flag operands wrong; there's a "_"
 ; where there should have been nothing.  Also, flags are in
 ; assembly code allowed to be specified in any order, which
 ; doesn't match the "flagbits" settings.  Luckily we don't
 ; use this field for assembly.
 (+ RFIX_SETF MODE_REGISTER SIZE_FIXED list-of-flags)
 (.splice
  sequence
  ((SI tmp))
  (set tmp list-of-flags)
  (.unsplice
   (.map
    (.pmacro (ccbit)
	     (if (ne (and tmp (sll 1 (.sym ccbit -bitnumber))) 0)
		 (set (.sym ccbit bit) 1)))
    cris-flagnames))
   (set prefix-set 0)
   ; Unless x was specified to be set, set it to 0.
   (if (eq (and tmp (sll 1 x-bitnumber)) 0)
       (set xbit 0)))
)

; CLEARF  <list of flags> [ P U I X | 01011111 | N Z V C ]
(dni-cdt
 clearf "Clear condition code flags explicitly"
 "clearf ${list-of-flags}"
 ; The zero-flags case gets flag operands wrong; there's a "_"
 ; where there should have been nothing.  Also, flags are in
 ; assembly code allowed to be specified in any order, which
 ; doesn't match the "flagbits" settings.  Luckily we don't
 ; use this field for assembly.
 (+ RFIX_CLEARF MODE_REGISTER SIZE_FIXED list-of-flags)
 (.splice
  sequence
  ((SI tmp))
  (set tmp list-of-flags)
  (.unsplice
   (.map
    (.pmacro (ccbit)
	     (if (ne (and tmp (sll 1 (.sym ccbit -bitnumber))) 0)
		 (set (.sym ccbit bit) 0)))
    cris-flagnames))
   (reset-x-p))
)

(define-pmacro
  (rfe-rfn-guts)
  "Common parts of RFE and RFN"
  (sequence
    ((USI oldccs) (USI samebits) (USI shiftbits) (USI keepmask) (BI p1))
    (set oldccs ccs)
    ; Keeping U, S and I in user mode is handled by the CCS setter, so we
    ; don't have to bother.  Actually Q and M are handled too.  The reason
    ; to mask those out is to not have them shifted down into the second
    ; flags level.
    (set keepmask #xc0000000)
    (set samebits (and oldccs keepmask))
    ; The P bit has its own equation.
    (set shiftbits (and (srl (and oldccs #x3ffdfc00) 10) (inv keepmask)))
    (set p1 (ne 0 (and oldccs #x20000)))
    (set ccs (or (or samebits shiftbits)
		 (if SI (and rbit (not p1)) 0 #x80))))
)

; RFE                     [ 0010 10010011 0000 ]
(dni-cdt-attr
 rfe
 "RFE"
 (MACH-V32)
 "rfe"
 (+ (f-dest 2) MODE_INDIRECT INFIX_RFE SIZE_FIXED (f-source 0))
 (rfe-rfn-guts)
)

; SFE                     [ 0011 10010011 0000 ]
(dni-cdt-attr
 sfe
 "SFE"
 (MACH-V32)
 "sfe"
 (+ (f-dest 3) MODE_INDIRECT INFIX_SFE SIZE_FIXED (f-source 0))
 (sequence
   ((SI oldccs) (SI savemask))
   (set savemask #xc0000000)
   (set oldccs ccs)
   (set ccs
	(or (and savemask oldccs)
	    (and (inv savemask) (sll oldccs 10)))))
)

; RFG                     [ 0100 10010011 0000 ]
(dni-cdt-attr
 rfg
 "RFG"
 (MACH-V32)
 "rfg"
 (+ (f-dest 4) MODE_INDIRECT INFIX_RFG SIZE_FIXED (f-source 0))
 (c-call VOID "@cpu@_rfg_handler" pc)
)

; RFN                     [ 0101 10010011 0000 ]
(dni-cdt-attr
 rfn
 "RFN"
 (MACH-V32)
 "rfn"
 (+ (f-dest 5) MODE_INDIRECT INFIX_RFN SIZE_FIXED (f-source 0))
 (sequence () (rfe-rfn-guts) (set mbit 1))
)

; HALT                     [ 1111 10010011 0000 ]
(dni-cdt-attr
 halt
 "HALT"
 (MACH-V32)
 "halt"
 (+ (f-dest 15) MODE_INDIRECT INFIX_HALT SIZE_FIXED (f-source 0))
 (set pc (c-call USI "@cpu@_halt_handler" pc))
)

; Bcc     o               [ cc | 0000 | o ]
(dni
 bcc-b "bcc byte operand"
 ()
 "b${cc} ${o-pcrel}"
 (+ cc QHI_BCC MODE_QUICK_IMMEDIATE o-pcrel)
 (sequence
   ((BI truthval))
   (set truthval (cris-condition cc))

   ; Amazing as it may seem, there's no simpler way to find out
   ; whether a branch is taken or not than to mark it through a kludge
   ; like this.
   (c-call VOID "@cpu@_branch_taken" pc o-pcrel truthval)

   (reset-x-p)
   (if truthval
       (delay 1
	      (set pc o-pcrel))))
 (.splice (.unsplice (simplecris-timing))
	  (crisv32 (unit u-branch) (unit u-exec)))
)
(dni
 ba-b "ba byte operand"
 ()
 "ba ${o-pcrel}"
 (+ (f-dest 14) QHI_BCC MODE_QUICK_IMMEDIATE o-pcrel)
 (sequence
   ()
   (reset-x-p)
   (delay 1
	  (set pc o-pcrel)))
 ((crisv32 (unit u-jump) (unit u-exec)))
)

; Bcc     [PC+]           [ cc | 11011111 1111 ]
; (We don't implement the generic for pre-V32 but unused variant
; "Bcc [Rn(+)]" where n != 15.)
(dni
 bcc-w "bcc, word operand"
 ()
 "b${cc} ${o-word-pcrel}"
 (+ cc MODE_AUTOINCREMENT INFIX_BCC_M SIZE_FIXED (f-source 15) o-word-pcrel)
 (sequence
   ((BI truthval))
   (set truthval (cris-condition cc))

   ; Amazing as it may seem, there's no simpler way to find out
   ; whether a branch is taken or not than to mark it through a kludge
   ; like this.
   (c-call VOID "@cpu@_branch_taken" pc o-word-pcrel truthval)

   (reset-x-p)
   (if truthval
       (delay 1
	      (set pc o-word-pcrel))))
 (.splice
  (.unsplice (simplecris-common-timing ((unit u-const16) (unit u-exec))))
  (crisv32 (unit u-const16) (unit u-branch) (unit u-exec)))
)
(dni
 ba-w "ba word operand"
 ()
 "ba ${o-word-pcrel}"
 (+ (f-dest 14) MODE_AUTOINCREMENT INFIX_BCC_M SIZE_FIXED (f-source 15) o-word-pcrel)
 (sequence
   ()
   (reset-x-p)
   (delay 1
	  (set pc o-word-pcrel)))
 (.splice
  (.unsplice (simplecris-common-timing ((unit u-const16) (unit u-exec))))
  (crisv32 (unit u-const16) (unit u-jump) (unit u-exec)))
)

; JAS     Rs,Pd           [ Pd | 10011011 | Rs ]
(dni
 jas-r "JAS register"
 (MACH-V32)
 "jas ${Rs},${Pd}"
 (+ Pd MODE_INDIRECT INFIX_JAS_R SIZE_FIXED Rs)
 (sequence
   ()
   (reset-x-p)
   (if (andif (eq (regno Rs) 1) (eq (regno Pd) 11))
       ; We use this as a trigger; a normally reasonably rare instruction
       ; used in the v32 trampoline.  See comment at bdapqpc.
       ; CGEN-FIXME: can't use (regno srp) [== (regno (reg h-sr 11))]
       (c-call VOID "cris_flush_simulator_decode_cache" pc))
   (delay 1
	  (sequence
	    ()
	    (set Pd (add SI pc 4))
	    (set pc Rs))))
 ((crisv32 (unit u-jump-r) (unit u-jump) (unit u-exec)))
)
; Same semantics in pre-V32, except no delay-slot.
; FIXME: Missing JIRC/JSRC/JBRC.
(dni-cdt-attr
 jump-r "JUMP/JSR/JIR register"
 (MACH-PC)
 "jump/jsr/jir ${Rs}"
 (+ Pd MODE_INDIRECT INFIX_JUMP_R SIZE_FIXED Rs)
 (sequence
   ()
   (set Pd (add SI pc 2))
   (set pc Rs)
   (reset-x-p))
)

; JAS     [PC+],Pd        [ Pd | 11011011 1111 ]
(dni
 jas-c "JAS constant"
 (MACH-V32)
 "jas ${const32},${Pd}"
 (+ Pd MODE_AUTOINCREMENT INFIX_JAS_M SIZE_FIXED (f-source 15) const32)
 (sequence
   ()
   (reset-x-p)
   (delay 1
	  (sequence
	    ()
	    (set Pd (add SI pc 8))
	    (set pc const32))))
 ((crisv32 (unit u-const32) (unit u-jump) (unit u-exec)))
)

;        JUMP/JSR/JIR  | Special r.| 1  m| 0  1  0  0| 1  1| Source    |
(dni-cmt-attr
 jump-m "JUMP/JSR/JIR memory"
 (MACH-PC)
 "jump/jsr/jir [${Rs}${inc}]"
 (+ Pd INFIX_JUMP_M SIZE_FIXED Rs)
 (sequence
   ()
   (set Pd (add SI pc 2))
   (set pc (cris-get-mem SI Rs))
   (reset-x-p))
)
(dni-c-SI-attr
 jump-c "JUMP/JSR/JIR constant"
 (MACH-PC)
 "jump/jsr/jir ${const32}"
 (+ Pd MODE_AUTOINCREMENT INFIX_JUMP_M SIZE_FIXED (f-source 15) const32)
 (sequence
   ()
   (set Pd (add SI pc 6))
   (set pc const32)
   (reset-x-p))
)

; JUMP    Ps              [ Ps | 10011111 0000 ]
(dni
 jump-p "JUMP special register"
 (MACH-V32)
 "jump ${Ps}"
 (+ Ps MODE_INDIRECT INFIX_JUMP_P SIZE_FIXED (f-source 0))
 (sequence
   ()
   (reset-x-p)
   (delay 1
	  (set pc Ps)))
 ((crisv32 (unit u-jump-sr)
	   (unit u-exec)))
)

; BAS     [PC+],Pd        [ Pd | 11101011 1111 ]
(dni
 bas-c "BAS constant"
 (MACH-V32)
 "bas ${const32},${Pd}"
 (+ Pd MODE_AUTOINCREMENT INFIX_BAS SIZE_FIXED (f-source 15) const32-pcrel)
 (sequence
   ()
   (reset-x-p)
   (delay 1
	  (sequence
	    ()
	    (set Pd (add SI pc 8))
	    (set pc const32-pcrel))))
 ((crisv32 (unit u-const32) (unit u-jump) (unit u-exec)))
)

; JASC    Rs,Pd           [ Pd | 10110011 | Rs ]
(dni
 jasc-r "JASC register"
 (MACH-V32)
 "jasc ${Rs},${Pd}"
 (+ Pd MODE_INDIRECT INFIX_JASC SIZE_FIXED Rs)
 (sequence
   ()
   (reset-x-p)
   (delay 1
	  (sequence
	    ()
	    (set Pd (add SI pc 8))
	    (set pc Rs))))
 ((crisv32 (unit u-jump-r) (unit u-skip4) (unit u-jump) (unit u-exec)))
)

; JASC    [PC+],Pd        [ Pd | 11110011 1111 ]
(dni
 jasc-c "JASC constant"
 (MACH-V32)
 "jasc ${const32},${Pd}"
 (+ Pd MODE_AUTOINCREMENT INFIX_JASC SIZE_FIXED (f-source 15) const32)
 (sequence
   ()
   (reset-x-p)
   (delay 1
	  (sequence
	    ()
	    (set Pd (add SI pc 12))
	    (set pc const32))))
 ((crisv32 (unit u-const32) (unit u-skip4) (unit u-jump) (unit u-exec)))
)

; BASC    [PC+],Pd        [ Pd | 11101111 1111 ]
(dni
 basc-c "BASC constant"
 (MACH-V32)
 "basc ${const32},${Pd}"
 (+ Pd MODE_AUTOINCREMENT INFIX_BASC SIZE_FIXED (f-source 15) const32-pcrel)
 (sequence
   ()
   (reset-x-p)
   (delay 1
	  (sequence
	    ()
	    (set Pd (add SI pc 12))
	    (set pc const32-pcrel))))
 ((crisv32 (unit u-const32) (unit u-skip4) (unit u-jump) (unit u-exec)))
)

; BREAK     n             [ 1110 | 10010011 | n ]

(dni-cdt
 break "break"
 "break $n"
 (+ (f-operand2 #xe) MODE_INDIRECT INFIX_BREAK SIZE_FIXED n)
 (sequence () (reset-x-p) (set pc (c-call USI "@cpu@_break_handler" n pc)))
)

; BOUND.m Rs,Rd           [ Rd | 010111mm | Rs ]
(dni-cdt-bwd
 bound-r "Bound register"
 "${Rs},${Rd}"
 (+ Rd R_BOUND MODE_REGISTER Rs)
 (.pmacro
  (BWD)
  (sequence
    ((SI tmpopd) (SI tmpops) (SI newval))
    (set tmpops ((.sym BWD -zext) (trunc BWD Rs)))
    (set tmpopd Rd)
    (set newval (if SI (ltu tmpops tmpopd) tmpops tmpopd))
    (set Rd newval)
    (setf-move SI newval)))
)

; BOUND.m [Rs],Rd         [ Rd | 100111mm | Rs ]
; BOUND.m [Rs+],Rd        [ Rd | 110111mm | Rs ]
(dni-cmt-bwd-attr
 bound-m "Bound memory"
 (MACH-PRE-V32)
 "[${Rs}${inc}],${Rd}"
 (+ Rd INDIR_BOUND Rs)
 (.pmacro
  (BWD)
  (sequence
    ((SI tmpopd) (SI tmpops) (SI newval))
    (set tmpops ((.sym BWD -zext) (cris-get-mem BWD Rs)))
    (set tmpopd Rd)
    (set newval (if SI (ltu tmpops tmpopd) tmpops tmpopd))
    (if (andif prefix-set (not inc))
	(set Rs newval)
	(set Rd newval))
    (setf-move SI newval)))
)

; (BOUND.m [PC+],Rd        [ Rd | 110111mm | 1111 ])
(dni-c-QI
 bound-cb "Bound constant byte"
 "bound.b [PC+],${Rd}"
 (+ Rd MODE_AUTOINCREMENT INDIR_BOUND SIZE_BYTE (f-source 15) uconst8)
 (sequence
   ((SI tmpopd) (SI tmpops) (SI newval))
   (set tmpops (zext SI (trunc QI uconst8)))
    (set tmpopd Rd)
    (set newval (if SI (ltu tmpops tmpopd) tmpops tmpopd))
    (set Rd newval)
    (setf-move SI newval))
)
(dni-c-HI
 bound-cw "Bound constant word"
 "bound.w [PC+],${Rd}"
 (+ Rd MODE_AUTOINCREMENT INDIR_BOUND SIZE_WORD (f-source 15) uconst16)
 (sequence
   ((SI tmpopd) (SI tmpops) (SI newval))
   (set tmpops (zext SI uconst16))
    (set tmpopd Rd)
    (set newval (if SI (ltu tmpops tmpopd) tmpops tmpopd))
    (set Rd newval)
    (setf-move SI newval))
)
(dni-c-SI
 bound-cd "Bound constant dword"
 "bound.d [PC+],${Rd}"
 (+ Rd MODE_AUTOINCREMENT INDIR_BOUND SIZE_DWORD (f-source 15) const32)
 (sequence
   ((SI tmpopd) (SI tmpops) (SI newval))
   (set tmpops const32)
    (set tmpopd Rd)
    (set newval (if SI (ltu tmpops tmpopd) tmpops tmpopd))
    (set Rd newval)
    (setf-move SI newval))
)

; Scc     Rd              [ cc | 01010011 | Rd ]
(dni-cdt
 scc "scc"
 "s${cc} ${Rd-sfield}"
 (+ cc MODE_REGISTER RFIX_SCC SIZE_FIXED Rd-sfield)
 (sequence
   ((BI truthval))
   (set truthval (cris-condition cc))
   (set Rd-sfield (zext SI truthval))
   (reset-x-p))
)

; LZ      Rs,Rd           [ Rd | 01110011 | Rs ]
(dni-cdt-attr
 lz "lz"
 (MACH-V3-UP)
 "lz ${Rs},${Rd}"
 (+ Rd MODE_REGISTER RFIX_LZ SIZE_FIXED Rs)
 (sequence
   ((SI tmpd) (SI tmp))
   (set tmp Rs)
   (set tmpd 0)
   (.splice
    sequence
    ()
    (.unsplice
     (.map
      (.pmacro (n)
	       (if (ge tmp 0)
		   (sequence
		     ()
		     (set tmp (sll tmp 1))
		     (set tmpd (add tmpd 1)))))
      (.iota 32))))
   (set Rd tmpd)
   (setf-move SI tmpd))
)

; ADDOQ   o,Rs,ACR        [ Rs | 0001 | o ]
(dni-cdt
 addoq "addoq"
 "addoq $o,$Rs,ACR"
 (+ Rs-dfield MODE_QUICK_IMMEDIATE QHI_ADDOQ o)
 (sequence
   ()
   (set prefixreg (add SI Rs-dfield o))
   (set prefix-set 1))
)

; (BDAPQ   o,PC        [ 1111 | 0001 | o ])
; This [PC+I] prefix is used in trampolines.
(dni-cdt-attr
 bdapqpc "bdapq pc operand"
 (MACH-PC UNCOND-CTI)
 "bdapq $o,PC"
 (+ (f-dest 15) MODE_QUICK_IMMEDIATE QHI_BDAP o)
 (sequence
   ()
   (set prefixreg (add SI (add SI pc 2) o))
   (set prefix-set 1)
   ; When this *rare* instruction is seen, we're may be about to write
   ; into code to be executed soon, *probably* covering addresses decoded
   ; and executed before.  If the simulator does not implement snooping
   ; and automatic decoder flush, it will execute old code.  This call
   ; is a kludge for such simulators, asking it to abandon such cached
   ; information.  Anyway, it is hopefully enough to make CGEN-sim not
   ; hork on gcc trampolines.
   ; We mark this insn as UNCOND-CTI so this insn will end a simulator
   ; basic block (the atomic unit of translation).
   (c-call VOID "cris_flush_simulator_decode_cache" pc))
)

; ADDO.m  [Rs],Rd,ACR    [ Rd | 100101mm | Rs ]
; ADDO.m  [Rs+],Rd,ACR   [ Rd | 110101mm | Rs ]
(dni-cmt-bwd
 addo-m "addo.m memory"
 "[${Rs}${inc}],$Rd,ACR"
 (+ Rd INDIR_ADDO Rs)
 (.pmacro
  (BWD)
  (sequence
    ((BWD tmps))
    (set tmps (cris-get-mem BWD Rs))
    (set prefixreg (add SI Rd ((.sym BWD -ext) tmps)))
    (set prefix-set 1)))
)

; (ADDO.m  [PC+],Rd,ACR   [ Rd | 110101mm | 1111 ]
(dni-c-QI
 addo-cb "addo.b const"
 "addo.b [PC+],$Rd,ACR"
 (+ Rd MODE_AUTOINCREMENT INDIR_ADDO SIZE_BYTE (f-source 15) sconst8)
 (sequence
   ()
   (set prefixreg (add SI Rd (ext SI (trunc QI sconst8))))
   (set prefix-set 1))
)
(dni-c-HI
 addo-cw "addo.w const"
 "addo.w [PC+],$Rd,ACR"
 (+ Rd MODE_AUTOINCREMENT INDIR_ADDO SIZE_WORD (f-source 15) sconst16)
 (sequence
   ()
   (set prefixreg (add SI Rd (ext SI (trunc HI sconst16))))
   (set prefix-set 1))
)
(dni-c-SI
 addo-cd "addo.d const"
 "addo.d [PC+],$Rd,ACR"
 (+ Rd MODE_AUTOINCREMENT INDIR_ADDO SIZE_DWORD (f-source 15) const32)
 (sequence
   ()
   (set prefixreg (add SI Rd const32))
   (set prefix-set 1))
)

;         DIP    []   | 0  0  0  0| 1  m| 0  1  0  1| 1  1| Source    |

(dni-cmt-attr
 dip-m "dip mem"
 (MACH-PRE-V32)
 "dip [${Rs}${inc}]"
 (+ (f-dest 0) INFIX_DIP SIZE_FIXED Rs)
 (sequence
   ((SI tmps))
   (set tmps (cris-get-mem SI Rs))
   (set prefixreg tmps)
   (set prefix-set 1))
)

;         (DIP    []   | 0  0  0  0| 1  m| 0  1  0  1| 1  1| Source    |    )
(dni-c-SI-attr
 dip-c "dip [PC+]"
 (MACH-PC)
 "dip [PC+]"
 (+ (f-dest 0) MODE_AUTOINCREMENT INFIX_DIP SIZE_FIXED (f-source 15) const32)
 (sequence
   ()
   (set prefixreg const32)
   (set prefix-set 1))
)

; ADDI    Rs.m,Rd,ACR     [ Rs | 010101mm | Rd ]
; a.k.a. biap
(dni-cdt-bwd
 addi-acr "addi prefix"
 "${Rs-dfield}.m,${Rd-sfield},ACR"
 (+ Rd-sfield MODE_REGISTER R_ADDI_ACR Rs-dfield)
 (.pmacro
  (BWD)
  (sequence
    ()
    (set prefixreg (add SI Rd-sfield (mul Rs-dfield (.sym BWD -size))))
    (set prefix-set 1)))
)

(dni-cdt-bwd-attr
 biap-pc "biap.m ${Rs-dfield},PC"
 (MACH-PC)
 "${Rs-dfield}.m,PC"
 (+ Rs-dfield MODE_REGISTER R_ADDI_ACR (f-source 15))
 (.pmacro
  (BWD)
  (sequence
    ()
    (set prefixreg (add SI (add SI pc 4) (mul Rs-dfield (.sym BWD -size))))
    (set prefix-set 1)))
)

; FIDXI    [Rs]            [ 0000 | 11010011 | Rs ]
(dni-cdt-attr
 fidxi "fidxi [Rs]"
 (MACH-V32)
 "fidxi [$Rs]"
 (+ (f-dest 0) MODE_AUTOINCREMENT INFIX_FIDXI SIZE_FIXED Rs)
 (set pc (c-call USI "@cpu@_fidxi_handler" pc Rs))
)

; FTAGI    [Rs]            [ 0001 | 11010011 | Rs ]
(dni-cdt-attr
 ftagi "ftagi [Rs]"
 (MACH-V32)
 "fidxi [$Rs]"
 (+ (f-dest 1) MODE_AUTOINCREMENT INFIX_FTAGI SIZE_FIXED Rs)
 (set pc (c-call USI "@cpu@_ftagi_handler" pc Rs))
)

; FIDXD    [Rs]            [ 0000 | 10101011 | Rs ]
(dni-cdt-attr
 fidxd "fidxd [Rs]"
 (MACH-V32)
 "fidxd [$Rs]"
 (+ (f-dest 0) MODE_INDIRECT INFIX_FIDXD SIZE_FIXED Rs)
 (set pc (c-call USI "@cpu@_fidxd_handler" pc Rs))
)

; FTAGD    [Rs]            [ 0001 | 10101011 | Rs ]
(dni-cdt-attr
 ftagd "ftagd [Rs]"
 (MACH-V32)
 "ftagd [$Rs]"
 (+ (f-dest 1) MODE_INDIRECT INFIX_FTAGD SIZE_FIXED Rs)
 (set pc (c-call USI "@cpu@_ftagd_handler" pc Rs))
)