cpu/mep-c5.cpu

; Copyright 2011 Free Software Foundation, Inc.
;
; Contributed by Red Hat Inc;
;
; 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 3 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.

; Insns introduced for the MeP-c5 core
;

(dnf f-c5n4     "extended field"     (all-mep-core-isas)   16  4)
(dnf f-c5n5     "extended field"     (all-mep-core-isas)   20  4)
(dnf f-c5n6     "extended field"     (all-mep-core-isas)   24  4)
(dnf f-c5n7     "extended field"     (all-mep-core-isas)   28  4)
(dnf f-rl5      "register l c5"      (all-mep-core-isas)   20  4)
(df  f-12s20    "extended field"     (all-mep-core-isas)   20  12  INT #f #f)

(dnop rl5       "register Rl c5"     (all-mep-core-isas) h-gpr   f-rl5)
(dnop cdisp12   "copro addend (12 bits)" (all-mep-core-isas) h-sint  f-12s20)

(dnci stcb_r "store in control bus space" (VOLATILE (MACH c5))
     "stcb $rn,($rma)"
     (+ MAJ_7 rn rma (f-sub4 12))
     (c-call VOID "do_stcb" rn (and rma #xffff))
     ((mep (unit u-use-gpr (in usereg rn))
	   (unit u-use-gpr (in usereg rma))
	   (unit u-exec)
	   (unit u-stcb))))

(dnci ldcb_r "load from control bus space" (VOLATILE (MACH c5) (LATENCY 3))
     "ldcb $rn,($rma)"
     (+ MAJ_7 rn rma (f-sub4 13))
     (set rn (c-call SI "do_ldcb" (and rma #xffff)))
      ((mep (unit u-use-gpr (in usereg rma))
	    (unit u-ldcb)
	    (unit u-exec)
	    (unit u-ldcb-gpr (out loadreg rn)))))

(dnci pref "cache prefetch" ((MACH c5) VOLATILE)
     "pref $cimm4,($rma)"
     (+ MAJ_7 cimm4 rma (f-sub4 5))
     (sequence ()
	       (c-call VOID "check_option_dcache" pc)
	       (c-call VOID "do_cache_prefetch" cimm4 rma pc))
     ((mep (unit u-use-gpr (in usereg rma))
	   (unit u-exec))))

(dnci prefd "cache prefetch" ((MACH c5) VOLATILE)
     "pref $cimm4,$sdisp16($rma)"
     (+ MAJ_15 cimm4 rma (f-sub4 3) sdisp16)
     (sequence ()
	       (c-call VOID "check_option_dcache" pc)
	       (c-call VOID "do_cache_prefetch" cimm4 (add INT rma (ext SI sdisp16)) pc))
     ((mep (unit u-use-gpr (in usereg rma))
	   (unit u-exec))))

(dnci casb3 "compare and swap byte 3" ((MACH c5) VOLATILE OPTIONAL_BIT_INSN)
      "casb3 $rl5,$rn,($rm)"
      (+ MAJ_15 rn rm (f-sub4 #x1) (f-c5n4 #x2) rl5 (f-c5n6 #x0) (f-c5n7 #x0))
      (sequence ()
		(c-call VOID "do_casb3" (index-of rl5) rn rm pc)
		(set rl5 rl5)
		)
      ((mep (unit u-use-gpr (in usereg rl5))
	    (unit u-load-gpr (out loadreg rl5))
	    (unit u-exec))))

(dnci cash3 "compare and swap halfword 3" ((MACH c5) VOLATILE OPTIONAL_BIT_INSN)
      "cash3 $rl5,$rn,($rm)"
      (+ MAJ_15 rn rm (f-sub4 #x1) (f-c5n4 #x2) rl5 (f-c5n6 #x0) (f-c5n7 #x1))
      (sequence ()
		(c-call VOID "do_cash3" (index-of rl5) rn rm pc)
		(set rl5 rl5)
		)
      ((mep (unit u-use-gpr (in usereg rl5))
	    (unit u-load-gpr (out loadreg rl5))
	    (unit u-exec))))

(dnci casw3 "compare and swap word 3" ((MACH c5) VOLATILE OPTIONAL_BIT_INSN)
      "casw3 $rl5,$rn,($rm)"
      (+ MAJ_15 rn rm (f-sub4 #x1) (f-c5n4 #x2) rl5 (f-c5n6 #x0) (f-c5n7 #x2))
      (sequence ()
		(c-call VOID "do_casw3" (index-of rl5) rn rm pc)
		(set rl5 rl5)
		)
      ((mep (unit u-use-gpr (in usereg rl5))
	    (unit u-load-gpr (out loadreg rl5))
	    (unit u-exec))))



(dnci sbcp "store byte coprocessor" (OPTIONAL_CP_INSN (STALL STORE) (MACH c5))
     "sbcp $crn,$cdisp12($rma)"
     (+ MAJ_15 crn rma (f-sub4 6) (f-ext4 0) cdisp12)
     (sequence ()
	       (c-call "check_option_cp" pc)
	       (c-call VOID "check_write_to_text" (add rma (ext SI cdisp12)))
	       (set (mem QI (add rma (ext SI cdisp12))) (and crn #xff)))
     ((mep (unit u-use-gpr (in usereg rma))
	   (unit u-exec))))

(dnci lbcp "load byte coprocessor" (OPTIONAL_CP_INSN (STALL STORE) (MACH c5))
     "lbcp $crn,$cdisp12($rma)"
     (+ MAJ_15 crn rma (f-sub4 6) (f-ext4 4) cdisp12)
     (sequence ()
	       (c-call "check_option_cp" pc)
	       (set crn (ext SI (mem QI (add rma (ext SI cdisp12))))))
     ((mep (unit u-use-gpr (in usereg rma))
	   (unit u-exec))))

(dnci lbucp "load byte coprocessor" (OPTIONAL_CP_INSN (STALL STORE) (MACH c5))
     "lbucp $crn,$cdisp12($rma)"
     (+ MAJ_15 crn rma (f-sub4 6) (f-ext4 12) cdisp12)
     (sequence ()
	       (c-call "check_option_cp" pc)
	       (set crn (zext SI (mem QI (add rma (ext SI cdisp12))))))
     ((mep (unit u-use-gpr (in usereg rma))
	   (unit u-exec))))


(dnci shcp "store half-word coprocessor" (OPTIONAL_CP_INSN (STALL STORE) (MACH c5))
     "shcp $crn,$cdisp12($rma)"
     (+ MAJ_15 crn rma (f-sub4 6) (f-ext4 1) cdisp12)
     (sequence ()
	       (c-call "check_option_cp" pc)
	       (c-call VOID "check_write_to_text" (add rma (ext SI cdisp12)))
	       (set (mem HI (add rma (ext SI cdisp12))) (and crn #xffff)))
     ((mep (unit u-use-gpr (in usereg rma))
	   (unit u-exec))))

(dnci lhcp "load half-word coprocessor" (OPTIONAL_CP_INSN (STALL STORE) (MACH c5))
     "lhcp $crn,$cdisp12($rma)"
     (+ MAJ_15 crn rma (f-sub4 6) (f-ext4 5) cdisp12)
     (sequence ()
	       (c-call "check_option_cp" pc)
	       (set crn (ext SI (mem HI (add rma (ext SI cdisp12))))))
     ((mep (unit u-use-gpr (in usereg rma))
	   (unit u-exec))))

(dnci lhucp "load half-word coprocessor" (OPTIONAL_CP_INSN (STALL STORE) (MACH c5))
     "lhucp $crn,$cdisp12($rma)"
     (+ MAJ_15 crn rma (f-sub4 6) (f-ext4 13) cdisp12)
     (sequence ()
	       (c-call "check_option_cp" pc)
	       (set crn (zext SI (mem HI (add rma (ext SI cdisp12))))))
     ((mep (unit u-use-gpr (in usereg rma))
	   (unit u-exec))))


(dnci lbucpa "load byte coprocessor" (OPTIONAL_CP_INSN (STALL LOAD) (MACH c5))
     "lbucpa $crn,($rma+),$cdisp10"
     (+ MAJ_15 crn rma (f-sub4 5) (f-ext4 #xC) (f-ext62 #x0) cdisp10)
     (sequence ()
	       (c-call "check_option_cp" pc)
	       (set crn (zext SI (mem QI rma)))
	       (set rma (add rma cdisp10)))
     ((mep (unit u-use-gpr (in usereg rma))
	   (unit u-exec))))

(dnci lhucpa "load half-word coprocessor" (OPTIONAL_CP_INSN (STALL LOAD) (MACH c5))
     "lhucpa $crn,($rma+),$cdisp10a2"
     (+ MAJ_15 crn rma (f-sub4 5) (f-ext4 #xD) (f-ext62 #x0) cdisp10a2)
     (sequence ()
	       (c-call "check_option_cp" pc)
	       (set crn (zext SI (mem HI (and rma (inv SI 1)))))
	       (set rma (add rma (ext SI cdisp10a2))))
     ((mep (unit u-use-gpr (in usereg rma))
	   (unit u-exec))))

(dnci lbucpm0 "lbucpm0" (OPTIONAL_CP_INSN (MACH c5))
     "lbucpm0 $crn,($rma+),$cdisp10"
     (+ MAJ_15 crn rma (f-sub4 5) (f-ext4 #xc) (f-ext62 #x2) cdisp10)
     (sequence ()
	       (c-call "check_option_cp" pc)
	       (set crn (zext SI (mem QI rma)))
	       (set rma (mod0 cdisp10)))
     ((mep (unit u-use-gpr (in usereg rma))
	   (unit u-exec))))

(dnci lhucpm0 "lhucpm0" (OPTIONAL_CP_INSN (MACH c5))
     "lhucpm0 $crn,($rma+),$cdisp10a2"
     (+ MAJ_15 crn rma (f-sub4 5) (f-ext4 #xd) (f-ext62 #x2) cdisp10a2)
     (sequence ()
	       (c-call "check_option_cp" pc)
	       (set crn (zext SI (mem HI (and rma (inv SI 1)))))
	       (set rma (mod0 cdisp10a2)))
     ((mep (unit u-use-gpr (in usereg rma))
	   (unit u-exec))))

(dnci lbucpm1 "lbucpm1" (OPTIONAL_CP_INSN (MACH c5))
     "lbucpm1 $crn,($rma+),$cdisp10"
     (+ MAJ_15 crn rma (f-sub4 5) (f-ext4 #xc) (f-ext62 #x3) cdisp10)
     (sequence ()
	       (c-call "check_option_cp" pc)
	       (set crn (zext SI (mem QI rma)))
	       (set rma (mod1 cdisp10)))
     ((mep (unit u-use-gpr (in usereg rma))
	   (unit u-exec))))

(dnci lhucpm1 "lhucpm1" (OPTIONAL_CP_INSN (MACH c5))
     "lhucpm1 $crn,($rma+),$cdisp10a2"
     (+ MAJ_15 crn rma (f-sub4 5) (f-ext4 #xd) (f-ext62 #x3) cdisp10a2)
     (sequence ()
	       (c-call "check_option_cp" pc)
	       (set crn (zext SI (mem HI (and rma (inv SI 1)))))
	       (set rma (mod1 cdisp10a2)))
     ((mep (unit u-use-gpr (in usereg rma))
	   (unit u-exec))))

(dnci uci "uci" ((MACH c5) VOLATILE)
     "uci $rn,$rm,$uimm16"
     (+ MAJ_15 rn rm (f-sub4 2) simm16)
     (set rn (c-call SI "do_UCI" rn rm (zext SI uimm16) pc))
     ((mep (unit u-use-gpr (in usereg rm))
	   (unit u-use-gpr (in usereg rn))
	   (unit u-exec))))

(dnf f-c5-rnm     "register n/m"              (all-mep-isas)    4  8)
(dnf f-c5-rm      "register m"              (all-mep-isas)    8  4)
(df  f-c5-16u16  "general 16-bit u-val"    (all-mep-isas) 16 16 UINT #f #f)

(dnmf f-c5-rmuimm20 "20-bit immediate in Rm/Imm16" (all-mep-isas) UINT
      (f-c5-rm f-c5-16u16)
      (sequence () ; insert
		(set (ifield f-c5-rm)    (srl (ifield f-c5-rmuimm20) 16))
		(set (ifield f-c5-16u16) (and (ifield f-c5-rmuimm20) #xffff))
		)
      (sequence () ; extract
		(set (ifield f-c5-rmuimm20) (or (ifield f-c5-16u16)
						(sll (ifield f-c5-rm) 16)))
		)
      )
(dnop c5rmuimm20 "20-bit immediate in rm and imm16" (all-mep-core-isas) h-uint f-c5-rmuimm20)

(dnmf f-c5-rnmuimm24 "24-bit immediate in Rm/Imm16" (all-mep-isas) UINT
      (f-c5-rnm f-c5-16u16)
      (sequence () ; insert
		(set (ifield f-c5-rnm)    (srl (ifield f-c5-rnmuimm24) 16))
		(set (ifield f-c5-16u16) (and (ifield f-c5-rnmuimm24) #xffff))
		)
      (sequence () ; extract
		(set (ifield f-c5-rnmuimm24) (or (ifield f-c5-16u16)
						(sll (ifield f-c5-rnm) 16)))
		)
      )
(dnop c5rnmuimm24 "24-bit immediate in rn, rm, and imm16" (all-mep-core-isas) h-uint f-c5-rnmuimm24)

(dnci dsp "dsp" ((MACH c5) VOLATILE)
     "dsp $rn,$rm,$uimm16"
     (+ MAJ_15 rn rm (f-sub4 0) uimm16)
     (set rn (c-call SI "do_DSP" rn rm (zext SI uimm16) pc))
     ((mep (unit u-use-gpr (in usereg rm))
	   (unit u-use-gpr (in usereg rn))
	   (unit u-exec))))

(dnci dsp0 "dsp0" ((MACH c5) VOLATILE NO-DIS ALIAS)
     "dsp0 $c5rnmuimm24"
     (+ MAJ_15 c5rnmuimm24 (f-sub4 0))
     (c-call VOID "do_DSP" (zext SI c5rnmuimm24) pc)
     ((mep (unit u-exec))))

(dnci dsp1 "dsp1" ((MACH c5) VOLATILE NO-DIS ALIAS)
     "dsp1 $rn,$c5rmuimm20"
     (+ MAJ_15 rn (f-sub4 0) c5rmuimm20)
     (set rn (c-call SI "do_DSP" rn (zext SI c5rmuimm20) pc))
     ((mep (unit u-use-gpr (in usereg rn))
	   (unit u-exec))))