2005-06-15 Dave Brolley <brolley@redhat.com>

        Contributed by Red Hat.
        * ms1.cpu: New file.  Written by Nick Clifton, Stan Cox.
        * ms1.opc: New file.  Written by Stan Cox.

3 files changed, 1692 insertions, 0 deletions

diff --git a/cpu/ChangeLog b/cpu/ChangeLog
index e56e2ea..f1848d4 100644
--- a/cpu/ChangeLog
+++ b/cpu/ChangeLog
@@ -1,3 +1,9 @@
+2005-06-15  Dave Brolley  <brolley@redhat.com>
+
+	Contributed by Red Hat.
+	* ms1.cpu: New file.  Written by Nick Clifton, Stan Cox.
+	* ms1.opc: New file.  Written by Stan Cox.
+
 2005-05-10  Nick Clifton  <nickc@redhat.com>
 
 	* Update the address and phone number of the FSF organization in
diff --git a/cpu/ms1.cpu b/cpu/ms1.cpu
new file mode 100644
index 0000000..f80690c
--- /dev/null
+++ b/cpu/ms1.cpu
@@ -0,0 +1,1240 @@
+; Morpho Technologies mRISC CPU description.  -*- Scheme -*-
+; Copyright 2001 Free Software Foundation, Inc.
+;
+; Contributed by Red Hat Inc; developed under contract from
+; Morpho Technologies.
+;
+; 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
+
+(include "simplify.inc")
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Define The Architecture, Attributes, ISA, CPU, Machine, And Model. ;;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+; define-arch must appear first
+(define-arch
+  (name ms1) ; name of cpu family
+  (comment "Morpho Technologies mRISC family")
+  (default-alignment aligned)
+  (insn-lsb0? #t)
+  (machs ms1 ms1-003)
+  (isas ms1)
+)
+
+; Instruction set parameters.
+
+(define-isa
+  (name ms1)
+  (comment "Morpho Technologies mrisc ISA")
+  (default-insn-word-bitsize 32)
+  (default-insn-bitsize 32)
+  (base-insn-bitsize 32)
+  (parallel-insns 2)
+)
+
+; Cpu family definitions.
+
+
+(define-cpu
+  ; cpu names must be distinct from the architecture name and machine names.
+  (name ms1bf)
+  (comment "Morpho Technologies mRISC family")
+  (endian big)
+  (word-bitsize 32)
+)
+
+(define-cpu
+  ; cpu names must be distinct from the architecture name and machine names.
+  (name ms1-003bf)
+  (comment "Morpho Technologies mRISC family")
+  (endian big)
+  (word-bitsize 32)
+)
+
+(define-mach
+  (name ms1)
+  (comment "Morpho Technologies mrisc")
+  (cpu ms1bf)
+  (isas ms1)
+)
+
+(define-mach
+  (name ms1-003)
+  (comment "Morpho Technologies mrisc")
+  (cpu ms1-003bf)
+  (isas ms1)
+)
+
+
+; Model descriptions.
+; Can probably take the u-exec out.  We'll see.
+(define-model
+  (name ms1)
+  (comment "Morpho Technologies mrisc")
+  (mach ms1)
+  (unit u-exec "Execution Unit" ()
+	1 1 ; issue done
+	() ; state
+	() ; inputs
+	() ; outputs
+	() ; profile action (default)
+	)
+)
+
+(define-model
+  (name ms1-003)
+  (comment "Morpho Technologies mrisc")
+  (mach ms1-003)
+  (unit u-exec "Execution Unit" ()
+	1 1 ; issue done
+	() ; state
+	() ; inputs
+	() ; outputs
+	() ; profile action (default)
+	)
+)
+
+; Macros to simplify MACH attribute specification.
+
+(define-pmacro MACHMS1 (MACH ms1))
+(define-pmacro MACHMS1-003 (MACH ms1-003))
+
+; FIXME: It might simplify things to separate the execute process from the
+; one that updates the PC.
+
+
+;;;;;;;;;;;;;;;;;;;;;;;;
+;; Instruction Fields ;;
+;;;;;;;;;;;;;;;;;;;;;;;;
+
+; Attributes:
+; PCREL-ADDR: pc relative value (for reloc and disassembly purposes)
+; ABS-ADDR: absolute address (for reloc and disassembly purposes?)
+; RESERVED: bits are not used to decode insn, must be all 0
+; RELOC: there is a relocation associated with this field (experiment)
+;
+; f-msys: Identify a a morphosys insns.  1 if msys, 0 if not.
+; f-opc: 6 bit opcode for non-morphosys instructions.
+; f-msopc: 6 bit opcode for morphosys instructions.
+; f-imm: flag to indicate use of an immediate operand.  1 if yes, 0 if no.
+; f-sr1: source resgister 1. (also used for MSYS insns)
+; f-sr2: source register 2. (also used for MSYS insns)
+; f-dr: destination register when located in bits 19:16.
+; f-drrr: destination register when located in bits 15:12. (also for MSYS insns)
+; f-imm16: 16 bit immediate value when not an offset.
+; f-imm16a: 16 bit immediate value when it's a pc-rel offset.
+; f-uu4a: unused 4 bit field.
+; f-uu4b: second unsed 4 bit field.
+; f-uu12: unused 12 bit field.
+; f-uu16: unused 16 bit field.
+; f-uu24: unused 24 bit field.
+
+(dnf f-msys      "morphosys insn flag"  	() 31 1)
+(dnf f-opc       "opcode field"			() 30 6)
+(dnf f-imm       "immedate flag"		() 24 1)
+(dnf f-uu24      "unused 24 bits"               () 23 24)
+(dnf f-sr1       "sr1 register field"	(ABS-ADDR) 23 4)
+(dnf f-sr2       "sr2 register field"	(ABS-ADDR) 19 4)
+(dnf f-dr        "dr register field"	(ABS-ADDR) 19 4)
+(dnf f-drrr      "drrr register field"	(ABS-ADDR) 15 4)
+(dnf f-imm16u    "unsigned 16 bit immediate"    () 15 16)
+(df  f-imm16s    "signed 16 bit immediate"      () 15 16 INT ((value pc) (add HI value 0)) ((value pc) (add HI value 0)))
+(dnf f-imm16a	 "pc-rel offset"      (PCREL-ADDR) 15 16)
+(dnf f-uu4a      "unused 4 bit field"		() 19 4)
+(dnf f-uu4b      "unused 4 bit field"		() 23 4)
+(dnf f-uu12      "unused 12 bit field"	        () 11 12)
+(dnf f-uu16      "unused 16 bit field" 	        () 15 16)
+
+; The following ifields are used exclusively for the MorphoSys instructions.
+; In a few cases, a bit field is used for something in addition to what its
+; name suggests.  For the most part, the names are meaningful though.
+
+(dnf f-msopc     "opcode field"			() 30 5)
+(dnf f-uu-26-25  "unused 26 bits"               () 25 26)
+(dnf f-mask      "mask"	                        () 25 16)
+(dnf f-bankaddr  "bank address"	                () 25 13)
+(dnf f-rda       "rda"	                        () 25 1)
+(dnf f-uu-2-25   "unused bits  25 & 24"		() 25 2)
+(dnf f-rbbc      "Omega network configuration"	() 25 2)
+(dnf f-perm	 "perm"				() 25 2)
+(dnf f-mode      "mode"                         () 25 2)
+(dnf f-uu-1-24   "testing" 			() 24 1)
+(dnf f-wr        "wr"	                        () 24 1)
+(dnf f-fbincr    "fb incr"                      () 23 4)
+(dnf f-uu-2-23   "unused bits 23 and 22"	() 23 2)
+(dnf f-xmode     "xmode"	                () 23 1)
+(dnf f-a23	 "a23"				() 23 1)
+(dnf f-mask1     "mask1"	                () 22 3)
+(dnf f-cr 	 "cr"				() 22 3)
+(dnf f-type      "type"	                        () 21 2)
+(dnf f-incamt    "increment amount"             () 19 8)
+(dnf f-cbs	 "cbs"				() 19 2)
+(dnf f-uu-1-19   "unused bit 19"		() 19 1)
+(dnf f-ball      "b_all"	                () 19 1)
+(dnf f-colnum    "column number"		() 18 3)
+(dnf f-brc       "b_r_c"	                () 18 3)
+(dnf f-incr	 "incr"				() 17 6)
+(dnf f-fbdisp    "frame buffer displacement"	() 15 6)
+(dnf f-uu-4-15   "unused bits 15,14,13,12"	() 15 4)
+(dnf f-length	 "length"			() 15 3)
+(dnf f-uu-1-15   "unused bit 15"         	() 15 1)
+(dnf f-rc        "row/column context"		() 15 1)
+(dnf f-rcnum     "starting cell of cntxt mem."	() 14 3)
+(dnf f-rownum    "row number"		        () 14 3)
+(dnf f-cbx	 "cbx"				() 14 3)
+(dnf f-id        "id"                           () 14 1)
+(dnf f-size      "size"                         () 13 14)
+(dnf f-rownum1   "row number"		        () 12 3)
+(dnf f-uu-3-11   "unused 3 bits (11-9)"         () 11 3)
+(dnf f-rc1       "row/column context"		() 11 1)
+(dnf f-ccb	 "ccb"				() 11 1)
+(dnf f-cbrb      "data-bus orientation"		() 10 1)
+(dnf f-cdb	 "cdb"				() 10 1)
+(dnf f-rownum2   "row number"		        ()  9 3)
+(dnf f-cell      "cell"         		()  9 3)
+(dnf f-uu-3-9    "unused 3 bits (9-7)"          ()  9 3)
+(dnf f-contnum   "context number"		()  8 9)
+(dnf f-uu-1-6    "unused bit 6"                 ()  6 1)
+(dnf f-dup       "dup"           		()  6 1)
+(dnf f-rc2       "rc2"           		()  6 1)
+(dnf f-ctxdisp   "context displacement"		()  5 6)
+
+
+; The following is just for a test
+(dnf f-msysfrsr2 "sr2 for msys"			() 19 4)
+(dnf f-brc2      "b_r_c2"                       () 14 3)
+(dnf f-ball2     "b_all2"                       () 15 1)
+
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Enumerations Of Instruction Fields ;;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+; insn-msys: bit 31.  1 for Morphosys Insns, 0 if not.
+(define-normal-insn-enum insn-msys "msys enums" () MSYS_ f-msys
+  (NO YES)
+)
+
+; insn-opc: bits 30 through 25 .  Non-MorphoSys Instructions
+; Note - the documentation is wrong for the encoding of the DBNZ
+; instruction.  It is actually 011110.  See Issue 67699.
+(define-normal-insn-enum insn-opc "opc enums" () OPC_ f-opc
+  (ADD  ADDU SUB  SUBU MUL   -      -    -
+   AND  OR   XOR  NAND NOR   XNOR   LDUI -
+   LSL  LSR  ASR  -    -     -      -    -
+   BRLT BRLE BREQ JMP  JAL   BRNEQ  DBNZ -
+   LDW  STW  -    -    -     -      -    -
+   -    -    -    -    -     -      -    -
+   EI   DI   SI   RETI BREAK IFLUSH -    -
+  )
+)
+
+; insn-msopc: bits 30 through 26 .  MorphoSys Instructions
+(define-normal-insn-enum insn-msopc "msopc enums" () MSOPC_ f-msopc
+  (LDCTXT LDFB      STFB    FBCB     MFBCB    FBCCI     FBRCI     FBCRI
+   FBRRI  MFBCCI    MFBRCI  MFBCRI   MFBRRI   FBCBDR    RCFBCB    MRCFBCB
+   CBCAST DUPCBCAST WFBI    WFB      RCRISC   FBCBINC   RCXMODE   INTLVR
+   WFBINC MWFBINC   WFBINCR MWFBINCR FBCBINCS MFBCBINCS FBCBINCRS MFBCBINCRS
+   -      -         -       -        -        -         -         -
+  )
+)
+
+; insn-imm: bit 24.  Immediate operand indicator.
+(define-normal-insn-enum insn-imm "imm enums" () IMM_ f-imm
+  ; This bit specifies whether and immediate operand will be present.
+  ; It's 1 if ther is, 0 if there is not.
+  (NO YES)
+)
+;;;;;;;;;;;;;;;;
+;; Attributes ;;
+;;;;;;;;;;;;;;;;
+
+; Might not need this.  Keep if for the sim just in case.
+;(define-attr
+;  (for insn)
+;  (type boolean)
+;  (name EXT-SKIP-INSN)
+;  (comment "instruction is a PAGE, LOADL or LOADH instruction")
+;)
+  
+(define-attr
+  (for insn)
+  (type boolean)
+  (name LOAD-DELAY)
+  (comment "insn has a load delay")
+)
+  
+(define-attr
+  (for insn)
+  (type boolean)
+  (name MEMORY-ACCESS)
+  (comment "insn performs a memory access")
+)
+
+(define-attr
+  (for insn)
+  (type boolean)
+  (name AL-INSN)
+  (comment "insn is an arithmetic or logic insn.")
+)
+
+(define-attr
+  (for insn)
+  (type boolean)
+  (name IO-INSN)
+  (comment "insn performs an I/O operation")
+)
+
+(define-attr
+  (for insn)
+  (type boolean)
+  (name BR-INSN)
+  (comment "insn performs an I/O operation")
+)
+
+(define-pmacro (define-reg-use-attr regfield)
+  (define-attr
+    (for insn)
+    (type boolean)
+    (name (.sym "USES-" (.upcase regfield)))
+    (comment ("insn accesses register operand " regfield))))
+
+(define-reg-use-attr "frdr")
+(define-reg-use-attr "frdrrr")
+(define-reg-use-attr "frsr1")
+(define-reg-use-attr "frsr2")
+
+
+; Might not need this.  Keep it for the sim just in case.
+(define-attr
+  (for insn)
+  (type boolean)
+  (name SKIPA)
+  (comment "instruction is a SKIP instruction")
+)
+
+ 
+;;;;;;;;;;;;;;;;;;;;; 
+;; Hardware Pieces ;;
+;;;;;;;;;;;;;;;;;;;;;
+
+;(define-pmacro (build-reg-name n) (.splice (.str "$" n) n))
+
+; These are the 16 registers that the chip has.  In later versions
+; where there will be more registers, this will need to be expanded.
+; Note that there are two entries for the registers with two names.
+(define-hardware
+  (name h-spr)
+  (comment "special-purpose registers")
+  (type register SI (16))
+  (indices keyword "" (("R0" 0) ("R1" 1) ("R2" 2) ("R3" 3) ("R4" 4) ("R5" 5)
+  ("R6" 6) ("R7" 7) ("R8" 8) ("R9" 9) ("R10" 10) ("R11" 11) ("R12" 12) ("fp" 12)
+  ("R13" 13) ("sp" 13) ("R14" 14) ("ra" 14) ("R15" 15) ("ira" 15)))
+;  (get (index) (and (raw-reg h-spr) #xffffffff))
+;  (set (index value) (set (raw-reg h-spr) (and value #xffffffff)))
+)
+
+; This is the  program counter.
+(dnh h-pc "program counter" (PC PROFILE) (pc) () () ())
+
+(define-keyword
+   (name msys-syms)
+   (print-name h-nil)
+   (prefix "")
+   (values (DUP 1) (XX 0))
+)
+
+;;;;;;;;;;;;;;
+;; Operands ;;
+;;;;;;;;;;;;;;
+
+(define-operand (name frsr1) (comment "register") (attrs) 
+  (type h-spr) (index f-sr1) )
+(define-operand (name frsr2) (comment "register") (attrs) 
+  (type h-spr) (index f-sr2) )
+(define-operand (name frdr) (comment "register") (attrs) 
+  (type h-spr) (index f-dr) )
+(define-operand (name frdrrr) (comment "register") (attrs) 
+  (type h-spr) (index f-drrr) )
+(define-operand (name imm16) (comment "immediate value - sign extd") (attrs) 
+  (type h-sint) (index f-imm16s) (handlers (parse "imm16") (print "dollarhex")))
+(define-operand (name imm16z) (comment "immediate value - zero extd") (attrs) 
+  (type h-uint) (index f-imm16u) (handlers (parse "imm16") (print "dollarhex")))
+(define-operand (name imm16o) (comment "immediate value") (attrs) 
+  (type h-uint) (index f-imm16s) (handlers (parse "imm16") (print "dollarhex")))
+
+; Operands for MorphoSys Instructions
+
+(define-operand (name rc) (comment "rc") (attrs) 
+  (type h-uint) (index f-rc) (handlers (parse "rc") (print "dollarhex")))
+
+(define-operand (name rcnum) (comment "rcnum") (attrs) 
+  (type h-uint) (index f-rcnum) (handlers (print "dollarhex")))
+
+(define-operand (name contnum) (comment "context number") (attrs) 
+  (type h-uint) (index f-contnum) (handlers (print "dollarhex")))
+
+(define-operand (name rbbc) (comment "omega network configuration") (attrs) 
+  (type h-uint) (index f-rbbc) (handlers (parse "rbbc") (print "dollarhex")))
+
+(define-operand (name colnum) (comment "column number") (attrs) 
+  (type h-uint) (index f-colnum) (handlers (print "dollarhex")))
+
+(define-operand (name rownum) (comment "row number") (attrs) 
+  (type h-uint) (index f-rownum) (handlers (print "dollarhex")))
+
+(define-operand (name rownum1) (comment "row number") (attrs) 
+  (type h-uint) (index f-rownum1) (handlers (print "dollarhex")))
+
+(define-operand (name rownum2) (comment "row number") (attrs) 
+  (type h-uint) (index f-rownum2) (handlers (print "dollarhex")))
+
+(define-operand (name rc1) (comment "rc1") (attrs) 
+  (type h-uint) (index f-rc1) (handlers (parse "rc") (print "dollarhex")))
+
+(define-operand (name rc2) (comment "rc2") (attrs) 
+  (type h-uint) (index f-rc2) (handlers (parse "rc") (print "dollarhex")))
+
+(define-operand (name cbrb) (comment "data-bus orientation") (attrs) 
+  (type h-uint) (index f-cbrb) (handlers (parse "cbrb") (print "dollarhex")))
+
+(define-operand (name cell) (comment "cell") (attrs) 
+  (type h-uint) (index f-cell) (handlers (print "dollarhex")))
+
+(define-operand (name dup) (comment "dup") (attrs) 
+  (type h-uint) (index f-dup) (handlers (parse "dup") (print "dollarhex")))
+
+(define-operand (name ctxdisp) (comment "context displacement") (attrs) 
+  (type h-uint) (index f-ctxdisp) (handlers (print "dollarhex")))
+
+(define-operand (name fbdisp) (comment "frame buffer displacement") (attrs) 
+  (type h-uint) (index f-fbdisp) (handlers (print "dollarhex")))
+
+(define-operand (name type) (comment "type") (attrs) 
+  (type h-uint) (index f-type) (handlers (parse "type") (print "dollarhex")))
+
+(define-operand (name mask) (comment "mask") (attrs) 
+  (type h-uint) (index f-mask) (handlers (print "dollarhex")))
+
+(define-operand (name bankaddr) (comment "bank address") (attrs) 
+  (type h-uint) (index f-bankaddr) (handlers (print "dollarhex")))
+
+(define-operand (name incamt) (comment "increment amount") (attrs) 
+  (type h-uint) (index f-incamt) (handlers (print "dollarhex")))
+
+(define-operand (name xmode) (comment "xmode") (attrs) 
+  (type h-uint) (index f-xmode) (handlers (parse "xmode") (print "dollarhex")))
+
+(define-operand (name mask1) (comment "mask1") (attrs) 
+  (type h-uint) (index f-mask1) (handlers (print "dollarhex")))
+
+(define-operand (name ball) (comment "b_all") (attrs) 
+  (type h-uint) (index f-ball) (handlers (parse "ball") (print "dollarhex")))
+
+(define-operand (name brc) (comment "b_r_c") (attrs) 
+  (type h-uint) (index f-brc) (handlers (print "dollarhex")))
+
+(define-operand (name rda) (comment "rd") (attrs) 
+  (type h-uint) (index f-rda) (handlers (print "dollarhex")))
+
+(define-operand (name wr) (comment "wr") (attrs) 
+  (type h-uint) (index f-wr) (handlers (print "dollarhex")))
+
+(define-operand (name ball2) (comment "b_all2") (attrs)
+  (type h-uint) (index f-ball2) (handlers (parse "ball") (print "dollarhex")))
+
+(define-operand (name brc2) (comment "b_r_c2") (attrs)
+  (type h-uint) (index f-brc2) (handlers (print "dollarhex")))
+(define-operand (name perm) (comment "perm") (attrs)
+  (type h-uint) (index f-perm) (handlers (print "dollarhex")))
+(define-operand (name a23)   (comment "a23") (attrs)
+  (type h-uint) (index f-a23) (handlers (print "dollarhex")))
+(define-operand (name cr)   (comment "c-r") (attrs)
+  (type h-uint) (index f-cr) (handlers (print "dollarhex")))
+(define-operand (name cbs)	(comment "cbs") (attrs)
+  (type h-uint) (index f-cbs) (handlers (print "dollarhex")))
+(define-operand (name incr)	(comment "incr") (attrs)
+  (type h-uint) (index f-incr) (handlers (print "dollarhex")))
+(define-operand (name length)	(comment "length") (attrs)
+  (type h-uint) (index f-length) (handlers (print "dollarhex")))
+(define-operand (name cbx)	(comment "cbx") (attrs)
+  (type h-uint) (index f-cbx) (handlers (print "dollarhex")))
+(define-operand (name ccb)	(comment "ccb") (attrs)
+  (type h-uint) (index f-ccb) (handlers (print "dollarhex")))
+(define-operand (name cdb)	(comment "cdb") (attrs)
+  (type h-uint) (index f-cdb) (handlers (print "dollarhex")))
+
+; For the INTLVR insn
+(define-operand (name mode) (comment "mode") (attrs)
+  (type h-uint) (index f-mode) (handlers (print "dollarhex")))
+(define-operand (name id) (comment "i/d") (attrs)
+  (type h-uint) (index f-id) (handlers (print "dollarhex")))
+(define-operand (name size) (comment "size") (attrs)
+  (type h-uint) (index f-size) (handlers (print "dollarhex")))
+
+(define-operand (name fbincr)	(comment "fb incr") (attrs)
+  (type h-uint) (index f-fbincr) (handlers (print "dollarhex")))
+
+; Probaby won't need most of these.
+(define-pmacro r0    (reg h-spr #x0))
+(define-pmacro r1    (reg h-spr #x01))
+(define-pmacro r2    (reg h-spr #x02))
+(define-pmacro r3    (reg h-spr #x03))
+(define-pmacro r4    (reg h-spr #x04))
+(define-pmacro r5    (reg h-spr #x05))
+(define-pmacro r6    (reg h-spr #x06))
+(define-pmacro r7    (reg h-spr #x07))
+(define-pmacro r8    (reg h-spr #x08))
+(define-pmacro r9    (reg h-spr #x09))
+(define-pmacro r10   (reg h-spr #xA))
+(define-pmacro r11   (reg h-spr #xB))
+(define-pmacro r12   (reg h-spr #xC))
+(define-pmacro fp    (reg h-spr #xC))
+(define-pmacro r13   (reg h-spr #xD))
+(define-pmacro sp    (reg h-spr #xD))
+(define-pmacro r14   (reg h-spr #xE))
+(define-pmacro ra    (reg h-spr #xE))
+(define-pmacro r15   (reg h-spr #xF))
+(define-pmacro ira   (reg h-spr #xF))
+
+; delayed set
+(define-pmacro (dset dest src) (set (delay 1 dest) src))
+
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Instructions As Defined In the MorphoRisc ISA Document ;;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+; Arithmetic Instructions
+
+(dni add "ADD DstReg, SrcReg1, SrcReg2"
+     (AL-INSN USES-FRDRRR USES-FRSR1 USES-FRSR2)
+     "add $frdrrr,$frsr1,$frsr2"
+     (+ MSYS_NO OPC_ADD IMM_NO frsr1 frsr2 frdrrr (f-uu12 0))
+     (set frdrrr (add SI frsr1 frsr2))
+     ()
+)
+
+(dni addu "ADDU DstReg, SrcReg1, SrcReg2"
+     (AL-INSN USES-FRDRRR USES-FRSR1 USES-FRSR2)
+     "addu $frdrrr,$frsr1,$frsr2"
+     (+ MSYS_NO OPC_ADDU IMM_NO frsr1 frsr2 frdrrr (f-uu12 0))
+     (set frdrrr (add USI frsr1 frsr2))
+     ()
+)
+
+(dni addi "ADDI DstReg, SrcReg1 UnsImm"
+     (AL-INSN USES-FRDR USES-FRSR1)
+     "addi $frdr,$frsr1,#$imm16"
+     (+ MSYS_NO OPC_ADD IMM_YES frsr1 frdr imm16)
+     (sequence((HI tmp))
+        (set HI tmp (and imm16 #xffff))
+	(set frdr (add SI frsr1 (ext SI tmp)))
+     )
+     ()
+)
+
+(dni addui "ADDUI DstReg, SrcReg1, UnsImm"
+     (AL-INSN USES-FRDR USES-FRSR1)
+     "addui $frdr,$frsr1,#$imm16z"
+     (+ MSYS_NO OPC_ADDU IMM_YES frsr1 frdr imm16z)
+     (set frdr (add USI frsr1 (ext USI imm16z)))
+     ()
+)
+
+(dni sub "SUB DstReg, SrcReg1, SrcReg2"
+     (AL-INSN USES-FRDRRR USES-FRSR1 USES-FRSR2)
+     "sub $frdrrr,$frsr1,$frsr2"
+     (+ MSYS_NO OPC_SUB IMM_NO frsr1 frsr2 frdrrr (f-uu12 0))
+     (set frdrrr (sub SI frsr1 frsr2))
+     ()
+)
+
+(dni subu "SUBU DstReg, SrcReg1, SrcReg2"
+     (AL-INSN USES-FRDRRR USES-FRSR1 USES-FRSR2)
+     "subu $frdrrr,$frsr1,$frsr2"
+     (+ MSYS_NO OPC_SUBU IMM_NO frsr1 frsr2 frdrrr (f-uu12 0))
+     (set frdrrr (sub USI frsr1 frsr2))
+     ()
+)
+
+(dni subi "SUBI DstReg, SrcReg1, UnsImm"
+     (AL-INSN USES-FRDR USES-FRSR1)
+     "subi $frdr,$frsr1,#$imm16"
+     (+ MSYS_NO OPC_SUB IMM_YES frsr1 frdr imm16)
+     (sequence((HI tmp))
+        (set HI tmp (and imm16 #xffff))
+	(set frdr (sub SI frsr1 (ext SI tmp)))
+     )
+     ;(set frdr (sub SI frsr1 (ext SI imm16)))
+     ()
+)
+
+(dni subui "SUBUI DstReg, SrcReg1, UnsImm"
+     (AL-INSN USES-FRDR USES-FRSR1)
+     "subui $frdr,$frsr1,#$imm16z"
+     (+ MSYS_NO OPC_SUBU IMM_YES frsr1 frdr imm16z)
+     (set frdr (sub USI frsr1 (ext USI imm16z)))
+     ()
+)
+
+(dni mul "MUL DstReg, SrcReg1, SrcReg2"
+     (MACHMS1-003 AL-INSN USES-FRDRRR USES-FRSR1 USES-FRSR2)
+     "mul $frdrrr,$frsr1,$frsr2"
+     (+ MSYS_NO OPC_MUL IMM_NO frsr1 frsr2 frdrrr (f-uu12 0))
+     (sequence((HI op1) (HI op2))
+	 (set op1 (and frsr1 #xffff))
+         (if (or (lt op1 (const -32768)) (gt op1 (const 32767)))
+            (error "operand out of range")
+         )
+	 (set op2 (and frsr2 #xffff))
+         (if (or (lt op2 (const -32768)) (gt op2 (const 32767)))
+            (error "operand out of range")
+         )
+	 (set frdrrr (mul SI (ext SI op1) (ext SI op2)))
+     )
+     ()
+)
+
+(dni muli "MULI DstReg, SrcReg1, UnsImm"
+     (MACHMS1-003 AL-INSN USES-FRDR USES-FRSR1)
+     "muli $frdr,$frsr1,#$imm16"
+     (+ MSYS_NO OPC_MUL IMM_YES frsr1 frdr imm16)
+     (sequence((HI op1) (HI op2))
+	 (set op1 (and frsr1 #xffff))
+         (if (or (lt op1 (const -32768)) (gt op1 (const 32767)))
+            (error "operand out of range")
+         )
+         (set op2 (and imm16 #xffff))
+         (if (eq op1 (const 0))
+          (error "op1 is 0")
+         )
+         (if (eq op2 (const 0))
+          (error "op2 is 0")
+         )
+	 (set frdr (mul SI (ext SI op1) (ext SI op2)))
+     )
+     ()
+)
+
+; Logical Instructions
+
+(dni and "AND DstReg, SrcReg1, SrcReg2"
+     (AL-INSN USES-FRDRRR USES-FRSR1 USES-FRSR2)
+     "and $frdrrr,$frsr1,$frsr2"
+     (+ MSYS_NO OPC_AND IMM_NO frsr1 frsr2 frdrrr (f-uu12 0))
+     (set frdrrr (and frsr1 frsr2))
+     ()
+)
+
+(dni andi "ANDI DstReg, SrcReg1, UnsImm"
+     (AL-INSN USES-FRDR USES-FRSR1)
+     "andi $frdr,$frsr1,#$imm16z"
+     (+ MSYS_NO OPC_AND IMM_YES frsr1 frdr imm16z)
+     (set frdr (and frsr1 (ext USI imm16z)))
+     ()
+)
+
+(dni or "OR DstReg, SrcReg1, SrcReg2"
+     (AL-INSN USES-FRDRRR USES-FRSR1 USES-FRSR2)
+     "or $frdrrr,$frsr1,$frsr2"
+     (+ MSYS_NO OPC_OR IMM_NO frsr1 frsr2 frdrrr (f-uu12 0))
+     (set frdrrr (or frsr1 frsr2))
+     ()
+)
+
+(dni nop "nop"
+     ()
+     "nop"
+     (+ MSYS_NO OPC_OR IMM_NO (f-uu24 0))
+     (nop)
+     ()
+)
+
+(dni ori "ORI DstReg, SrcReg1, UnsImm"
+     (AL-INSN USES-FRDR USES-FRSR1)
+     "ori $frdr,$frsr1,#$imm16z"
+     (+ MSYS_NO OPC_OR IMM_YES frsr1 frdr imm16z)
+     (set frdr (or frsr1 (ext USI imm16z)))
+     ()
+)
+
+(dni xor "XOR DstReg, SrcReg1, SrcReg2"
+     (AL-INSN USES-FRDRRR USES-FRSR1 USES-FRSR2)
+     "xor $frdrrr,$frsr1,$frsr2"
+     (+ MSYS_NO OPC_XOR IMM_NO frsr1 frsr2 frdrrr (f-uu12 0))
+     (set frdrrr (xor frsr1 frsr2))
+     ()
+)
+
+(dni xori "XORI DstReg, SrcReg1, UnsImm"
+     (AL-INSN USES-FRDR USES-FRSR1)
+     "xori $frdr,$frsr1,#$imm16z"
+     (+ MSYS_NO OPC_XOR IMM_YES frsr1 frdr imm16z)
+     (set frdr (xor frsr1 (ext USI imm16z)))
+     ()
+)
+
+(dni nand "NAND DstReg, SrcReg1, SrcReg2"
+     (AL-INSN USES-FRDRRR USES-FRSR1 USES-FRSR2)
+     "nand $frdrrr,$frsr1,$frsr2"
+     (+ MSYS_NO OPC_NAND IMM_NO frsr1 frsr2 frdrrr (f-uu12 0))
+     (set frdrrr (inv (and frsr1 frsr2)))
+     ()
+)
+
+(dni nandi "NANDI DstReg, SrcReg1, UnsImm"
+     (AL-INSN USES-FRDR USES-FRSR1)
+     "nandi $frdr,$frsr1,#$imm16z"
+     (+ MSYS_NO OPC_NAND IMM_YES frsr1 frdr imm16z)
+     (set frdr (inv (and frsr1 (ext USI imm16z))))
+     ()
+)
+
+(dni nor "NOR DstReg, SrcReg1, SrcReg2"
+     (AL-INSN USES-FRDRRR USES-FRSR1 USES-FRSR2)
+     "nor $frdrrr,$frsr1,$frsr2"
+     (+ MSYS_NO OPC_NOR IMM_NO frsr1 frsr2 frdrrr (f-uu12 0))
+     (set frdrrr (inv (or frsr1 frsr2)))
+     ()
+)
+
+(dni nori "NORI DstReg, SrcReg1, UnsImm"
+     (AL-INSN USES-FRDR USES-FRSR1)
+     "nori $frdr,$frsr1,#$imm16z"
+     (+ MSYS_NO OPC_NOR IMM_YES frsr1 frdr imm16z)
+     (set frdr (inv (or frsr1 (ext USI imm16z))))
+     ()
+)
+
+(dni xnor "XNOR DstReg, SrcReg1, SrcReg2"
+     (AL-INSN USES-FRDRRR USES-FRSR1 USES-FRSR2)
+     "xnor $frdrrr,$frsr1,$frsr2"
+     (+ MSYS_NO OPC_XNOR IMM_NO frsr1 frsr2 frdrrr (f-uu12 0))
+     (set frdrrr (inv (xor frsr1 frsr2)))
+     ()
+)
+
+(dni xnori "XNORI DstReg, SrcReg1, UnsImm"
+     (AL-INSN USES-FRDR USES-FRSR1)
+     "xnori $frdr,$frsr1,#$imm16z"
+     (+ MSYS_NO OPC_XNOR IMM_YES frsr1 frdr imm16z)
+     (set frdr (inv (xor frsr1 (ext USI imm16z))))
+     ()
+)
+
+(dni ldui "LDUI DstReg, UnsImm"
+     (AL-INSN USES-FRDR)
+     "ldui $frdr,#$imm16z"
+     (+ MSYS_NO OPC_LDUI IMM_YES (f-uu4b 0) frdr imm16z)
+     (set frdr (and (sll imm16z 16) #xffff0000))
+     ()
+)
+
+; Shift Instructions
+
+(dni lsl "LSL DstReg, SrcReg1, SrcReg2"
+     (USES-FRDRRR USES-FRSR1 USES-FRSR2)
+     "lsl $frdrrr,$frsr1,$frsr2"
+     (+ MSYS_NO OPC_LSL IMM_NO frsr1 frsr2 frdrrr (f-uu12 0))
+     (set frdrrr (sll frsr1 frsr2))
+     ()
+)
+
+(dni lsli "LSLI DstReg, SrcReg1, UnsImm"
+     (USES-FRDR USES-FRSR1)
+     "lsli $frdr,$frsr1,#$imm16"
+     (+ MSYS_NO OPC_LSL IMM_YES frsr1 frdr imm16)
+     (set frdr (sll frsr1 imm16))
+     ()
+)
+
+(dni lsr "LSR DstReg, SrcReg1, SrcReg2"
+     (USES-FRDRRR USES-FRSR1 USES-FRSR2)
+     "lsr $frdrrr,$frsr1,$frsr2"
+     (+ MSYS_NO OPC_LSR IMM_NO frsr1 frsr2 frdrrr (f-uu12 0))
+     (set frdrrr (srl frsr1 frsr2))
+     ()
+)
+
+(dni lsri "LSRI DstReg, SrcReg1, UnsImm"
+     (USES-FRDR USES-FRSR1)
+     "lsri $frdr,$frsr1,#$imm16"
+     (+ MSYS_NO OPC_LSR IMM_YES frsr1 frdr imm16)
+     (set frdr (srl frsr1 imm16))
+     ()
+)
+
+(dni asr "ASR DstReg, SrcReg1, SrcReg2"
+     (USES-FRDRRR USES-FRSR1 USES-FRSR2)
+     "asr $frdrrr,$frsr1,$frsr2"
+     (+ MSYS_NO OPC_ASR IMM_NO frsr1 frsr2 frdrrr (f-uu12 0))
+     (set frdrrr (sra frsr1 frsr2))
+     ()
+)
+
+(dni asri "ASRI DstReg, SrcReg1, UnsImm"
+     (USES-FRDR USES-FRSR1)
+     "asri $frdr,$frsr1,#$imm16"
+     (+ MSYS_NO OPC_ASR IMM_YES frsr1 frdr imm16)
+     (set frdr (sra frsr1 imm16))
+     ()
+)
+
+; Control Transfer Instructions
+
+(dni brlt "BRLT SrcReg1, SrcReg2, label"
+     (BR-INSN DELAY-SLOT USES-FRDRRR USES-FRSR1 USES-FRSR2)
+     "brlt $frsr1,$frsr2,$imm16o"
+     (+ MSYS_NO OPC_BRLT IMM_YES frsr1 frsr2 imm16o)
+     (sequence()
+        (if (lt USI frsr1 frsr2)
+            (dset pc (add pc (ext SI imm16o))))
+     )
+     ()
+)
+
+(dni brle "BRLE SrcReg1, SrcReg2, label"
+     (BR-INSN DELAY-SLOT USES-FRSR1 USES-FRSR2)
+     "brle $frsr1,$frsr2,$imm16o"
+     (+ MSYS_NO OPC_BRLE IMM_YES frsr1 frsr2 imm16o)
+     (sequence()
+        (if (le USI frsr1 frsr2)
+            (dset pc (add pc (ext SI imm16o))))
+     )
+     ()
+)
+
+(dni breq "BREQ SrcReg1, SrcReg2, label"
+     (BR-INSN DELAY-SLOT USES-FRSR1 USES-FRSR2)
+     "breq $frsr1,$frsr2,$imm16o"
+     (+ MSYS_NO OPC_BREQ IMM_YES frsr1 frsr2 imm16o)
+     (sequence()
+        (if (eq USI frsr1 frsr2)
+            (dset pc (add pc (ext SI imm16o))))
+     )
+     ()
+)
+
+(dni brne "BRNE SrcReg1, SrcReg2, label"
+     (BR-INSN DELAY-SLOT USES-FRSR1 USES-FRSR2)
+     "brne $frsr1,$frsr2,$imm16o"
+     (+ MSYS_NO OPC_BRNEQ IMM_YES frsr1 frsr2 imm16o)
+     (sequence()
+        (if (not (eq USI frsr1 frsr2))
+            (dset pc (add pc (ext SI imm16o))))
+     )
+     ()
+)
+
+(dni jmp "JMP, label"
+     (DELAY-SLOT BR-INSN)
+     "jmp $imm16o"
+     (+ MSYS_NO OPC_JMP IMM_YES (f-uu4b 0) (f-uu4a 0) imm16o)
+     (dset pc (add pc (ext SI imm16o)))
+     ()
+)
+
+(dni jal "JAL DstReg, SrcReg1"
+     (BR-INSN DELAY-SLOT BR-INSN USES-FRDR USES-FRSR1)
+     "jal $frdrrr,$frsr1"
+     (+ MSYS_NO OPC_JAL IMM_NO frsr1 (f-uu4a 0) frdrrr (f-uu12 0))
+     (sequence()
+         (if (eq frsr1 #x0)
+	    (c-call VOID "do_syscall" pc)
+	    (sequence()   ; else part.  Do non-syscall stuff here.
+		(dset frdrrr (add pc #x8))
+		(dset pc frsr1)
+            ) 
+         )
+     )
+     ()
+)
+
+(dni dbnz "DBNZ SrcReg1, label"
+     (MACHMS1-003 BR-INSN DELAY-SLOT USES-FRSR1)
+     "dbnz $frsr1,$imm16o"
+     (+ MSYS_NO OPC_DBNZ IMM_YES frsr1 (f-uu4a 0) imm16o)
+     (sequence()
+	 (if (not (eq USI frsr1 0))
+            (dset pc (add pc (ext SI imm16o))))
+     )
+     ()
+)
+
+; Interrupt Control Instructions
+
+(dni ei "EI - Enable Interrupt Processing"
+     ()
+     "ei"
+     (+ MSYS_NO OPC_EI IMM_NO (f-uu4b 0) (f-uu4a 0) (f-uu16 0))
+     (c-call VOID "enable_interrupts")
+     ()
+)
+
+(dni di "DI - Disable Interrupt Processing"
+     ()
+     "di"
+     (+ MSYS_NO OPC_DI IMM_NO (f-uu4b 0) (f-uu4a 0) (f-uu16 0))
+     (c-call VOID "disable_interrupts")
+     ()
+)
+
+(dni si "SI - Send software Interrupt"
+     (DELAY-SLOT BR-INSN USES-FRDR)
+     "si $frdrrr"
+     (+ MSYS_NO OPC_SI IMM_NO (f-uu4b 0) (f-uu4a 0) frdrrr (f-uu12 0))
+     ;(sequence() 
+     ;   (dset frdr (add pc #x4))
+     ;   (c-call VOID "do_syscall1" pc)
+     ;   ; (dset pc frsr1) Do this later when we have the address.
+     ;)
+     (sequence() 
+        (set frdrrr (add pc #x4))
+        (c-call VOID "do_syscall" pc)
+        ; (set pc frsr1) Do this later when we have the address.
+     )
+     ()
+)
+
+(dni reti "RETI SrcReg1"
+     (DELAY-SLOT BR-INSN USES-FRSR1)
+     "reti $frsr1"
+     (+ MSYS_NO OPC_RETI IMM_NO frsr1 (f-uu4a 0) (f-uu16 0))
+     (sequence()
+       (c-call VOID "enable_interrupts")
+       (dset pc frsr1)
+     )
+     ()
+)
+
+; Memory Access Instructions
+
+(dni ldw "LDW DstReg, SrcReg1, Imm"
+     (LOAD-DELAY MEMORY-ACCESS USES-FRDR USES-FRSR1)
+     "ldw $frdr,$frsr1,#$imm16"
+     (+ MSYS_NO OPC_LDW IMM_YES frsr1 frdr imm16)
+     (sequence((USI ea) (HI tmp))
+      (set HI tmp (and imm16 #xffff))
+      (set ea (and (add SI frsr1 (ext SI tmp)) #xfffffffc))
+      (set frdr (mem SI ea))
+     )
+     ()
+)
+
+(dni stw "STW SrcReg2, SrcReg1, Imm"
+     (MEMORY-ACCESS USES-FRSR1 USES-FRSR2)
+     "stw $frsr2,$frsr1,#$imm16"
+     (+ MSYS_NO OPC_STW IMM_YES frsr1 frsr2 imm16)
+     (sequence((USI ea) (HI tmp))
+      (set HI tmp (and imm16 #xffff))
+      (set ea (and (add SI frsr1 (ext SI tmp)) #xfffffffc))
+      (set (mem SI ea) frsr2)
+     )
+     ()
+)
+
+; Break Instruction
+
+(dni break "BREAK"
+     ()
+     "break"
+     (+ MSYS_NO OPC_BREAK (f-imm 0) (f-uu24 0))
+     (c-call VOID "do_break" pc)
+     ()
+)
+
+; Cache Flush Instruction
+
+(dni iflush "IFLUSH"
+     (MACHMS1-003)
+     "iflush"
+     (+ MSYS_NO OPC_IFLUSH (f-imm 0) (f-uu24 0))
+     (nop)
+     ()
+)
+
+; MorphoSys Instructions
+
+(dni ldctxt "LDCTXT SRC1, SRC2, r/c, r/c#, context#"
+     ()
+     "ldctxt $frsr1,$frsr2,#$rc,#$rcnum,#$contnum"
+     (+ MSYS_YES MSOPC_LDCTXT (f-uu-2-25 0) frsr1 frsr2 rc rcnum (f-uu-3-11 0)
+	contnum )
+     (nop)
+     ()
+)
+
+(dni ldfb "LDFB SRC1, byte#"
+     ()
+     "ldfb $frsr1,$frsr2,#$imm16z"
+     (+ MSYS_YES MSOPC_LDFB (f-uu-2-25 0) frsr1 frsr2 imm16z)
+     (nop)
+     ()
+)
+
+(dni stfb "STFB SRC1, SRC2, byte "
+     ()
+     "stfb $frsr1,$frsr2,#$imm16z"
+     (+ MSYS_YES MSOPC_STFB (f-uu-2-25 0) frsr1 frsr2 imm16z)
+     (nop)
+     ()
+)
+
+(dni fbcb "FBCB SRC1, RT/BR1/BR2/CS, B_all, B_r_c, r/c, CB/RB, cell, dup, ctx_disp"
+     ()
+     "fbcb $frsr1,#$rbbc,#$ball,#$brc,#$rc1,#$cbrb,#$cell,#$dup,#$ctxdisp"
+     (+ MSYS_YES MSOPC_FBCB rbbc frsr1 ball brc (f-uu-4-15 0) rc cbrb cell dup ctxdisp)
+     (nop)
+     ()
+)
+
+(dni mfbcb "MFBCB SRC1, RT/BR1/BR2/CS, SRC2, r/c, CB/RB, cell, dup, ctx_disp"
+     ()
+     "mfbcb $frsr1,#$rbbc,$frsr2,#$rc1,#$cbrb,#$cell,#$dup,#$ctxdisp"
+     (+ MSYS_YES MSOPC_MFBCB rbbc frsr1 frsr2 (f-uu-4-15 0) rc1 cbrb cell dup ctxdisp)
+     (nop)
+     ()
+)
+
+(dni fbcci "FBCCI SRC1, RT/BR1/BR2/CS, B_all, B_r_c, FB_disp, cell, dup, ctx_disp"
+     ()
+     "fbcci $frsr1,#$rbbc,#$ball,#$brc,#$fbdisp,#$cell,#$dup,#$ctxdisp"
+     (+ MSYS_YES MSOPC_FBCCI rbbc frsr1 ball brc fbdisp cell dup ctxdisp)
+     (nop)
+     ()
+)
+
+(dni fbrci "FBRCI SRC1, RT/BR1/BR2/CS, B_all, B_r_c, FB_disp, cell, dup, ctx_disp"
+     ()
+     "fbrci $frsr1,#$rbbc,#$ball,#$brc,#$fbdisp,#$cell,#$dup,#$ctxdisp"
+     (+ MSYS_YES MSOPC_FBRCI rbbc frsr1 ball brc fbdisp cell dup ctxdisp)
+     (nop)
+     ()
+)
+
+(dni fbcri "FBCRI SRC1, RT/BR1/BR2/CS, B_all, B_r_c, FB_disp, cell, dup, ctx_disp"
+     ()
+     "fbcri $frsr1,#$rbbc,#$ball,#$brc,#$fbdisp,#$cell,#$dup,#$ctxdisp"
+     (+ MSYS_YES MSOPC_FBCRI rbbc frsr1 ball brc fbdisp cell dup ctxdisp)
+     (nop)
+     ()
+)
+
+(dni fbrri "FBRRI SRC1, RT/BR1/BR2/CS, B_all, B_r_c, FB_disp, cell, dup, ctx_disp"
+     ()
+     "fbrri $frsr1,#$rbbc,#$ball,#$brc,#$fbdisp,#$cell,#$dup,#$ctxdisp"
+     (+ MSYS_YES MSOPC_FBRRI rbbc frsr1 ball brc fbdisp cell dup ctxdisp)
+     (nop)
+     ()
+)
+
+(dni mfbcci "MFBCCI SRC1, RT/BR1/BR2/CS, SRC2, FB_disp, cell, dup, ctx_disp"
+     ()
+     "mfbcci $frsr1,#$rbbc,$frsr2,#$fbdisp,#$cell,#$dup,#$ctxdisp"
+     (+ MSYS_YES MSOPC_MFBCCI rbbc frsr1 frsr2 fbdisp cell dup ctxdisp)
+     (nop)
+     ()
+)
+
+(dni mfbrci "MFBRCI SRC1, RT/BR1/BR2/CS, SRC2, FB_disp, cell, dup, ctx_disp"
+     ()
+     "mfbrci $frsr1,#$rbbc,$frsr2,#$fbdisp,#$cell,#$dup,#$ctxdisp"
+     (+ MSYS_YES MSOPC_MFBRCI rbbc frsr1 frsr2 fbdisp cell dup ctxdisp)
+     (nop)
+     ()
+)
+
+(dni mfbcri "MFBCRI SRC1, RT/BR1/BR2/CS, SRC2, FB_disp, cell, dup, ctx_disp"
+     ()
+     "mfbcri $frsr1,#$rbbc,$frsr2,#$fbdisp,#$cell,#$dup,#$ctxdisp"
+     (+ MSYS_YES MSOPC_MFBCRI rbbc frsr1 frsr2 fbdisp cell dup ctxdisp)
+     (nop)
+     ()
+)
+
+(dni mfbrri "MFBRRI SRC1, RT/BR1/BR2/CS, SRC2, FB_disp, cell, dup, ctx_disp"
+     ()
+     "mfbrri $frsr1,#$rbbc,$frsr2,#$fbdisp,#$cell,#$dup,#$ctxdisp"
+     (+ MSYS_YES MSOPC_MFBRRI rbbc frsr1 frsr2 fbdisp cell dup ctxdisp)
+     (nop)
+     ()
+)
+
+(dni fbcbdr "FBCBDR SRC1, RT/BR1/BR2/CS, SRC2, B_all, B_r_c, r/c, CB/RB, cell, dup, ctx_disp"
+     ()
+     "fbcbdr $frsr1,#$rbbc,$frsr2,#$ball2,#$brc2,#$rc1,#$cbrb,#$cell,#$dup,#$ctxdisp"
+     (+ MSYS_YES MSOPC_FBCBDR rbbc frsr1 frsr2 ball2 brc2 rc1 cbrb cell dup ctxdisp)
+     (nop)
+     ()
+)
+
+(dni rcfbcb "RCFBCB RT/BR1/BR2/CS, type, B_all, B_r_c, row#, r/c, CB/RB, cell, dup, ctx_disp"
+     ()
+     "rcfbcb #$rbbc,#$type,#$ball,#$brc,#$rownum,#$rc1,#$cbrb,#$cell,#$dup,#$ctxdisp"
+     (+ MSYS_YES MSOPC_RCFBCB rbbc (f-uu-2-23 0) type ball brc (f-uu-1-15 0) rownum rc1 cbrb cell dup ctxdisp)
+     (nop)
+     ()
+)
+
+(dni mrcfbcb "MRCFBCB SRC2, RT/BR1/BR2/CS, type, row#, r/c, CB/RB, cell, dup, ctx_disp"
+     ()
+     "mrcfbcb $frsr2,#$rbbc,#$type,#$rownum,#$rc1,#$cbrb,#$cell,#$dup,#$ctxdisp"
+     (+ MSYS_YES MSOPC_MRCFBCB rbbc (f-uu-2-23 0) type frsr2 (f-uu-1-15 0) rownum rc1 cbrb cell dup ctxdisp)
+     (nop)
+     ()
+)
+
+(dni cbcast "CBCAST mask, r/c, ctx_disp "
+     ()
+     "cbcast #$mask,#$rc2,#$ctxdisp"
+     (+ MSYS_YES MSOPC_CBCAST mask (f-uu-3-9 0) rc2 ctxdisp)
+     (nop)
+     ()
+)
+
+(dni dupcbcast "DUPCBCAST mask, cell, r/c, ctx_disp "
+     ()
+     "dupcbcast #$mask,#$cell,#$rc2,#$ctxdisp"
+     (+ MSYS_YES MSOPC_DUPCBCAST mask cell rc2 ctxdisp)
+     (nop)
+     ()
+)
+
+(dni wfbi "WFBI Bank_address, row#, cell, dup, ctx_disp "
+     ()
+    "wfbi #$bankaddr,#$rownum1,#$cell,#$dup,#$ctxdisp"
+     (+ MSYS_YES MSOPC_WFBI bankaddr rownum1 cell dup ctxdisp)
+     (nop)
+     ()
+)
+
+;(dni wfb "WFB SRC1, SRC2, FB_disp, row#, ctx_disp"
+;     ()
+;     "wfb $frsr1,$frsr2,#$fbdisp,#$rownum,#$ctxdisp"
+;     (+ MSYS_YES MSOPC_WFB (f-uu-2-25 0) frsr1 frsr2 fbdisp rownum (f-uu-1-6 0) ctxdisp)
+;     (nop)
+;     ()
+;)
+
+(dni wfb "WFB, DRC1,SRC2,FB_disp,row#,ctx_disp"
+      ()
+      "wfb $frsr1,$frsr2,#$fbdisp,#$rownum2,#$ctxdisp"
+      (+ MSYS_YES MSOPC_WFB (f-uu-2-25 0) frsr1 frsr2 fbdisp rownum2 (f-uu-1-6 0) ctxdisp)
+      (nop)
+      ()
+)
+
+
+(dni rcrisc "RCRISC DEST, RT/BR1/BR2/CS, SRC1, column#, r/c, CB/RB, cell, dup, ctx_disp"
+     ()
+     "rcrisc $frdrrr,#$rbbc,$frsr1,#$colnum,#$rc1,#$cbrb,#$cell,#$dup,#$ctxdisp"
+     (+ MSYS_YES MSOPC_RCRISC rbbc frsr1 (f-uu-1-19 0) colnum frdrrr rc1 cbrb cell dup ctxdisp)
+     (nop)
+     ()
+)
+
+(dni fbcbinc "FBCBINC SRC1, RT/BR1/BR2/CS, Incr_amount, r/c, CB/RB, cell, dup, ctx_disp "
+     ()
+     "fbcbinc $frsr1,#$rbbc,#$incamt,#$rc1,#$cbrb,#$cell,#$dup,#$ctxdisp"
+     (+ MSYS_YES MSOPC_FBCBINC rbbc frsr1 incamt rc1 cbrb cell dup ctxdisp)
+     (nop)
+     ()
+)
+
+(dni rcxmode "RCXMODE SRC2, rd, wr, xmode, mask, FB_disp, row#, r/c, ctx_disp"
+     ()
+     "rcxmode $frsr2,#$rda,#$wr,#$xmode,#$mask1,#$fbdisp,#$rownum2,#$rc2,#$ctxdisp"
+     (+ MSYS_YES MSOPC_RCXMODE rda wr xmode mask1 frsr2 fbdisp rownum2 rc2 ctxdisp)
+     (nop)
+     ()
+)
+
+(dni interleaver "INTLVR ireg, mode, ireg, i/d, size"
+     ()
+     "intlvr $frsr1,#$mode,$frsr2,#$id,#$size"
+     (+ MSYS_YES MSOPC_INTLVR mode frsr1 frsr2 (f-uu-1-15 0) id size)
+     (nop)
+     ()
+)
+
+;; Issue 66262: The documenatation gives the wrong order for 
+;;               the arguments to the WFBINC instruction.
+(dni wfbinc "WFBINC type, ccb/rcb, incr, all, c/r, length, rca_row, word, dup, ctxt_disp"
+     (MACHMS1-003)
+     "wfbinc #$rda,#$wr,#$fbincr,#$ball,#$colnum,#$length,#$rownum1,#$rownum2,#$dup,#$ctxdisp"
+     (+ MSYS_YES MSOPC_WFBINC rda wr fbincr ball colnum length rownum1 rownum2 dup ctxdisp)
+     (nop)
+     ()
+)
+
+(dni mwfbinc "MWFBINC mreg, type, ccb/rcb, incr, length, rca_row, word, dup, ctxt_disp"
+     (MACHMS1-003)
+     "mwfbinc $frsr2,#$rda,#$wr,#$fbincr,#$length,#$rownum1,#$rownum2,#$dup,#$ctxdisp"
+     (+ MSYS_YES MSOPC_MWFBINC rda wr fbincr frsr2 length rownum1 rownum2 dup ctxdisp)
+     (nop)
+     ()
+)
+
+(dni wfbincr "WFBINCR ireg, type, ccb/rcb, all, c/r, length, rca_row, word, dup, ctxt_disp"
+     (MACHMS1-003)
+     "wfbincr $frsr1,#$rda,#$wr,#$ball,#$colnum,#$length,#$rownum1,#$rownum2,#$dup,#$ctxdisp"
+     (+ MSYS_YES MSOPC_WFBINCR rda wr frsr1 ball colnum length rownum1 rownum2 dup ctxdisp)
+     (nop)
+     ()
+)
+
+(dni mwfbincr "MWFBINCR ireg, mreg, type, ccb/rcb, length, rca_row, word, dup, ctxt_disp"
+     (MACHMS1-003)
+     "mwfbincr $frsr1,$frsr2,#$rda,#$wr,#$length,#$rownum1,#$rownum2,#$dup,#$ctxdisp"
+     (+ MSYS_YES MSOPC_MWFBINCR rda wr frsr1 frsr2 length rownum1 rownum2 dup ctxdisp)
+     (nop)
+     ()
+)
+
+(dni fbcbincs "FBCBINCS	     perm, all, c/r, cbs, incr, ccb/rcb, cdb/rdb, word, dup, ctxt_disp"
+     (MACHMS1-003)
+     "fbcbincs #$perm,#$a23,#$cr,#$cbs,#$incr,#$ccb,#$cdb,#$rownum2,#$dup,#$ctxdisp"
+     (+ MSYS_YES MSOPC_FBCBINCS perm a23 cr cbs incr ccb cdb rownum2 dup ctxdisp)
+     (nop)
+     ()
+)
+
+(dni mfbcbincs "MFBCBINCS		ireg, perm, cbs, incr, ccb/rcb, cdb/rdb, word, dup, ctxt_disp"
+     (MACHMS1-003)
+     "mfbcbincs $frsr1,#$perm,#$cbs,#$incr,#$ccb,#$cdb,#$rownum2,#$dup,#$ctxdisp"
+     (+ MSYS_YES MSOPC_MFBCBINCS perm frsr1 cbs incr ccb cdb rownum2 dup ctxdisp)
+     (nop)
+     ()
+)
+
+(dni fbcbincrs "FBCBINCRS	     ireg, perm, all, c/r, cbs, ccb/rcb, cdb/rdb, word, dup, ctxt_disp"
+     (MACHMS1-003)
+     "fbcbincrs $frsr1,#$perm,#$ball,#$colnum,#$cbx,#$ccb,#$cdb,#$rownum2,#$dup,#$ctxdisp"
+     (+ MSYS_YES MSOPC_FBCBINCRS perm frsr1 ball colnum (f-uu-1-15 0) cbx ccb cdb rownum2 dup ctxdisp)
+     (nop)
+     ()
+)
+
+(dni mfbcbincrs "MFBCBINCRS ireg, mreg, perm, cbs, ccb/rcb, cdb/rdb, word, dup, ctxt_disp"
+     (MACHMS1-003)
+     "mfbcbincrs $frsr1,$frsr2,#$perm,#$cbx,#$ccb,#$cdb,#$rownum2,#$dup,#$ctxdisp"
+     (+ MSYS_YES MSOPC_MFBCBINCRS perm frsr1 frsr2 (f-uu-1-15 0) cbx ccb cdb rownum2 dup ctxdisp)
+     (nop)
+     ()
+)
diff --git a/cpu/ms1.opc b/cpu/ms1.opc
new file mode 100644
index 0000000..57c2913
--- /dev/null
+++ b/cpu/ms1.opc
@@ -0,0 +1,446 @@
+/* Morpho Technologies mRISC opcode support, for GNU Binutils.  -*- C -*-
+   Copyright 2001 Free Software Foundation, Inc.
+
+   Contributed by Red Hat Inc; developed under contract from
+   Morpho Technologies.
+
+   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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
+
+*/
+
+/*
+   Each section is delimited with start and end markers.
+
+   <arch>-opc.h additions use: "-- opc.h"
+   <arch>-opc.c additions use: "-- opc.c"
+   <arch>-asm.c additions use: "-- asm.c"
+   <arch>-dis.c additions use: "-- dis.c"
+   <arch>-ibd.h additions use: "-- ibd.h"
+*/
+
+/* -- opc.h */
+
+/* Check applicability of instructions against machines.  */
+#define CGEN_VALIDATE_INSN_SUPPORTED
+
+/* Allows reason codes to be output when assembler errors occur.  */
+#define CGEN_VERBOSE_ASSEMBLER_ERRORS
+
+/* Override disassembly hashing - there are variable bits in the top
+   byte of these instructions.  */
+#define CGEN_DIS_HASH_SIZE 8
+#define CGEN_DIS_HASH(buf, value) (((* (unsigned char *) (buf)) >> 5) % CGEN_DIS_HASH_SIZE)
+
+#define CGEN_ASM_HASH_SIZE 127
+#define CGEN_ASM_HASH(insn) ms1_asm_hash (insn)
+
+extern unsigned int ms1_asm_hash (const char *);
+
+extern int ms1_cgen_insn_supported (CGEN_CPU_DESC, const CGEN_INSN *);
+
+
+/* -- opc.c */
+#include "safe-ctype.h"
+
+/* Special check to ensure that instruction exists for given machine.  */
+
+int
+ms1_cgen_insn_supported (CGEN_CPU_DESC cd,
+			 const CGEN_INSN *insn)
+{
+  int machs = CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_MACH);
+
+  /* No mach attribute?  Assume it's supported for all machs.  */
+  if (machs == 0)
+    return 1;
+  
+  return ((machs & cd->machs) != 0);
+}
+
+/* A better hash function for instruction mnemonics.  */
+
+unsigned int
+ms1_asm_hash (const char* insn)
+{
+  unsigned int hash;
+  const char* m = insn;
+
+  for (hash = 0; *m && ! ISSPACE (*m); m++)
+    hash = (hash * 23) ^ (0x1F & TOLOWER (*m));
+
+  /* printf ("%s %d\n", insn, (hash % CGEN_ASM_HASH_SIZE)); */
+
+  return hash % CGEN_ASM_HASH_SIZE;
+}
+
+
+/* -- asm.c */
+static int signed_out_of_bounds (long);
+static const char * parse_imm16 (CGEN_CPU_DESC, const char **, int, long *);
+static const char * parse_dup   (CGEN_CPU_DESC, const char **, int, long *);
+static const char * parse_ball  (CGEN_CPU_DESC, const char **, int, long *);
+static const char * parse_xmode (CGEN_CPU_DESC, const char **, int, long *);
+static const char * parse_rc    (CGEN_CPU_DESC, const char **, int, long *);
+static const char * parse_cbrb  (CGEN_CPU_DESC, const char **, int, long *);
+static const char * parse_rbbc  (CGEN_CPU_DESC, const char **, int, long *);
+static const char * parse_type  (CGEN_CPU_DESC, const char **, int, long *);
+
+/* Range checking for signed numbers.  Returns 0 if acceptable
+   and 1 if the value is out of bounds for a signed quantity.  */
+
+static int 
+signed_out_of_bounds (long val)
+{
+  if ((val < -32768) || (val > 32767))
+    return 1;
+  return 0;
+}
+
+static const char *
+parse_imm16 (CGEN_CPU_DESC cd,
+	     const char **strp,
+	     int opindex,
+	     long *valuep)
+{
+  const char *errmsg;
+  enum cgen_parse_operand_result result_type;
+  bfd_reloc_code_real_type code = BFD_RELOC_NONE;
+  bfd_vma value;
+
+  /* Is it a control transfer instructions?  */ 
+  if (opindex == (CGEN_OPERAND_TYPE) MS1_OPERAND_IMM16O)
+    {
+      code = BFD_RELOC_16_PCREL;
+      errmsg = cgen_parse_address (cd, strp, opindex, code,
+                                   & result_type, & value);
+      if (errmsg == NULL)
+	{
+	  if (signed_out_of_bounds (value))
+	    errmsg = _("Operand out of range. Must be between -32768 and 32767.");
+	}
+      *valuep = value;
+      return errmsg;
+    }
+
+  /* If it's not a control transfer instruction, then
+     we have to check for %OP relocating operators.  */
+  if (strncmp (*strp, "%hi16", 5) == 0)
+    {
+      *strp += 5;
+      code = BFD_RELOC_HI16;
+    }
+  else if (strncmp (*strp, "%lo16", 5) == 0)
+    {
+      *strp += 5;
+      code = BFD_RELOC_LO16;
+    }
+
+  /* If we found a %OP relocating operator, then parse it as an address.
+     If not, we need to parse it as an integer, either signed or unsigned
+     depending on which operand type we have.  */
+  if (code != BFD_RELOC_NONE)
+    {
+       /* %OP relocating operator found.  */
+       errmsg = cgen_parse_address (cd, strp, opindex, code,
+                                   & result_type, & value);
+       if (errmsg == NULL)
+	 {
+           switch (result_type)
+	     {
+	     case (CGEN_PARSE_OPERAND_RESULT_NUMBER):
+	       if (code == BFD_RELOC_HI16)
+		 value = (value >> 16) & 0xFFFF;
+	       else if (code == BFD_RELOC_LO16)
+		 value = value  & 0xFFFF;
+	       else 
+		 errmsg = _("Biiiig Trouble in parse_imm16!");
+	       break;
+
+	     case (CGEN_PARSE_OPERAND_RESULT_QUEUED):
+	       /* No special processing for this case.  */
+	       break;
+
+	     default:
+	       errmsg = _("%operator operand is not a symbol");
+	       break;
+             }
+	 }
+       *valuep = value;
+    }
+  else
+    {
+      /* Parse hex values like 0xffff as unsigned, and sign extend
+	 them manually.  */
+      int parse_signed = (opindex == (CGEN_OPERAND_TYPE)MS1_OPERAND_IMM16);
+
+      if ((*strp)[0] == '0'
+	  && ((*strp)[1] == 'x' || (*strp)[1] == 'X'))
+	parse_signed = 0;
+
+      /* No relocating operator.  Parse as an number.  */
+      if (parse_signed)
+	{
+          /* Parse as as signed integer.  */
+ 
+          errmsg = cgen_parse_signed_integer (cd, strp, opindex, valuep);
+
+          if (errmsg == NULL) 
+	    {
+#if 0
+	      /* Manual range checking is needed for the signed case.  */
+	      if (*valuep & 0x8000)
+                value = 0xffff0000 | *valuep;
+	      else 
+                value = *valuep;
+
+	      if (signed_out_of_bounds (value))
+	        errmsg = _("Operand out of range. Must be between -32768 and 32767.");
+	      /* Truncate to 16 bits. This is necessary
+		 because cgen will have sign extended *valuep.  */
+	      *valuep &= 0xFFFF; 
+#endif
+	    }
+	}
+      else  
+	{
+          /* MS1_OPERAND_IMM16Z.  Parse as an unsigned integer.  */
+          errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
+
+	  if (opindex == (CGEN_OPERAND_TYPE)MS1_OPERAND_IMM16
+	      && *valuep >= 0x8000
+	      && *valuep <= 0xffff)
+	    *valuep -= 0x10000;
+	}
+    }
+
+  return errmsg;
+}
+
+
+static const char *
+parse_dup (CGEN_CPU_DESC cd,
+	   const char **strp,
+	   int opindex,
+	   long *valuep)
+{
+  const char *errmsg = NULL;
+
+  if (strncmp (*strp, "dup", 3) == 0 || strncmp (*strp, "DUP", 3) == 0)
+    {
+      *strp += 3;
+      *valuep = 1;
+    }
+  else if (strncmp (*strp, "xx", 2) == 0 || strncmp (*strp, "XX", 2) == 0)
+    {
+      *strp += 2;
+      *valuep = 0;
+    }
+  else
+    errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
+
+  return errmsg;
+}
+
+
+static const char *
+parse_ball (CGEN_CPU_DESC cd,
+	    const char **strp,
+	    int opindex,
+	    long *valuep)
+{
+  const char *errmsg = NULL;
+
+  if (strncmp (*strp, "all", 3) == 0 || strncmp (*strp, "ALL", 3) == 0)
+    {
+      *strp += 3;
+      *valuep = 1;
+    }
+  else if (strncmp (*strp, "one", 3) == 0 || strncmp (*strp, "ONE", 3) == 0)
+    {
+      *strp += 3;
+      *valuep = 0;
+    }
+  else
+    errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
+
+  return errmsg;
+}
+
+static const char *
+parse_xmode (CGEN_CPU_DESC cd,
+	     const char **strp,
+	     int opindex,
+	     long *valuep)
+{
+  const char *errmsg = NULL;
+
+  if (strncmp (*strp, "pm", 2) == 0 || strncmp (*strp, "PM", 2) == 0)
+    {
+      *strp += 2;
+      *valuep = 1;
+    }
+  else if (strncmp (*strp, "xm", 2) == 0 || strncmp (*strp, "XM", 2) == 0)
+    {
+      *strp += 2;
+      *valuep = 0;
+    }
+  else
+    errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
+
+  return errmsg;
+}
+
+static const char *
+parse_rc (CGEN_CPU_DESC cd,
+	  const char **strp,
+	  int opindex,
+	  long *valuep)
+{
+  const char *errmsg = NULL;
+
+  if (strncmp (*strp, "r", 1) == 0 || strncmp (*strp, "R", 1) == 0)
+    {
+      *strp += 1;
+      *valuep = 1;
+    }
+  else if (strncmp (*strp, "c", 1) == 0 || strncmp (*strp, "C", 1) == 0)
+    {
+      *strp += 1;
+      *valuep = 0;
+    }
+  else
+    errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
+
+  return errmsg;
+}
+
+static const char *
+parse_cbrb (CGEN_CPU_DESC cd,
+	    const char **strp,
+	    int opindex,
+	    long *valuep)
+{
+  const char *errmsg = NULL;
+
+  if (strncmp (*strp, "rb", 2) == 0 || strncmp (*strp, "RB", 2) == 0)
+    {
+      *strp += 2;
+      *valuep = 1;
+    }
+  else if (strncmp (*strp, "cb", 2) == 0 || strncmp (*strp, "CB", 2) == 0)
+    {
+      *strp += 2;
+      *valuep = 0;
+    }
+  else
+    errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
+
+  return errmsg;
+}
+
+static const char *
+parse_rbbc (CGEN_CPU_DESC cd,
+	    const char **strp,
+	    int opindex,
+	    long *valuep)
+{
+  const char *errmsg = NULL;
+
+  if (strncmp (*strp, "rt", 2) == 0 || strncmp (*strp, "RT", 2) == 0)
+    {
+      *strp += 2;
+      *valuep = 0;
+    }
+  else if (strncmp (*strp, "br1", 3) == 0 || strncmp (*strp, "BR1", 3) == 0)
+    {
+      *strp += 3;
+      *valuep = 1;
+    }
+  else if (strncmp (*strp, "br2", 3) == 0 || strncmp (*strp, "BR2", 3) == 0)
+    {
+      *strp += 3;
+      *valuep = 2;
+    }
+  else if (strncmp (*strp, "cs", 2) == 0 || strncmp (*strp, "CS", 2) == 0)
+    {
+      *strp += 2;
+      *valuep = 3;
+    }
+  else
+    errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
+
+  return errmsg;
+}
+
+static const char *
+parse_type (CGEN_CPU_DESC cd,
+	    const char **strp,
+	    int opindex,
+	    long *valuep)
+{
+  const char *errmsg = NULL;
+
+  if (strncmp (*strp, "odd", 3) == 0 || strncmp (*strp, "ODD", 3) == 0)
+    {
+      *strp += 3;
+      *valuep = 0;
+    }
+  else if (strncmp (*strp, "even", 4) == 0 || strncmp (*strp, "EVEN", 4) == 0)
+    {
+      *strp += 4;
+      *valuep = 1;
+    }
+  else if (strncmp (*strp, "oe", 2) == 0 || strncmp (*strp, "OE", 2) == 0)
+    {
+      *strp += 2;
+      *valuep = 2;
+    }
+  else
+    errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
+
+ if ((errmsg == NULL) && (*valuep == 3))
+    errmsg = _("invalid operand.  type may have values 0,1,2 only.");
+
+  return errmsg;
+}
+
+/* -- dis.c */
+static void print_dollarhex (CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int);
+
+static void
+print_dollarhex (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
+		 void * dis_info,
+		 long value,
+		 unsigned int attrs ATTRIBUTE_UNUSED,
+		 bfd_vma pc ATTRIBUTE_UNUSED,
+		 int length ATTRIBUTE_UNUSED)
+{
+  disassemble_info *info = (disassemble_info *) dis_info;
+
+  info->fprintf_func (info->stream, "$%x", value);
+
+  if (0)
+    print_normal (cd, dis_info, value, attrs, pc, length);
+}
+
+
+/* -- */
+
+
+
+
+