; Toshiba MeP FMAX Coprocessor description. -*- Scheme -*-
; 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.
;------------------------------------------------------------------------------
; MeP-Integrator will redefine the isa pmacros below to allow the bit widths
; specified below for each ME_MODULE using this coprocessor.
; This coprocessor requires only the 32 bit insns in the core.
;------------------------------------------------------------------------------
; begin-isas
(define-pmacro fmax-core-isa () (ISA ext_core2))
(define-pmacro all-fmax-isas () (ISA ext_core2))
; end-isas
;******************************************************************************
; ifields
;------------------------------------------------------------------------------
; opcodes
(dnf f-fmax-0-4 "opcode" (all-fmax-isas) 0 4)
(dnf f-fmax-4-4 "opcode" (all-fmax-isas) 4 4)
(dnf f-fmax-8-4 "opcode" (all-fmax-isas) 8 4)
(dnf f-fmax-12-4 "opcode" (all-fmax-isas) 12 4)
(dnf f-fmax-16-4 "opcode" (all-fmax-isas) 16 4)
(dnf f-fmax-20-4 "opcode" (all-fmax-isas) 20 4)
(dnf f-fmax-24-4 "opcode" (all-fmax-isas) 24 4)
(dnf f-fmax-28-1 "opcode" (all-fmax-isas) 28 1)
(dnf f-fmax-29-1 "opcode" (all-fmax-isas) 29 1)
(dnf f-fmax-30-1 "opcode" (all-fmax-isas) 30 1)
(dnf f-fmax-31-1 "opcode" (all-fmax-isas) 31 1)
;------------------------------------------------------------------------------
; FR registers
(define-multi-ifield
(name f-fmax-frd)
(comment "FRd register")
(attrs all-fmax-isas)
(mode UINT)
(subfields f-fmax-28-1 f-fmax-4-4)
(insert (sequence ()
(set (ifield f-fmax-4-4) (and (ifield f-fmax-frd) #xf))
(set (ifield f-fmax-28-1) (srl (ifield f-fmax-frd) 4))))
(extract (set (ifield f-fmax-frd)
(or (sll (ifield f-fmax-28-1) 4) (ifield f-fmax-4-4))))
)
(define-multi-ifield
(name f-fmax-frn)
(comment "FRn register")
(attrs all-fmax-isas)
(mode UINT)
(subfields f-fmax-29-1 f-fmax-20-4)
(insert (sequence ()
(set (ifield f-fmax-20-4) (and (ifield f-fmax-frn) #xf))
(set (ifield f-fmax-29-1) (srl (ifield f-fmax-frn) 4))))
(extract (set (ifield f-fmax-frn)
(or (sll (ifield f-fmax-29-1) 4) (ifield f-fmax-20-4))))
)
(define-multi-ifield
(name f-fmax-frm)
(comment "FRm register")
(attrs all-fmax-isas)
(mode UINT)
(subfields f-fmax-30-1 f-fmax-24-4)
(insert (sequence ()
(set (ifield f-fmax-24-4) (and (ifield f-fmax-frm) #xf))
(set (ifield f-fmax-30-1) (srl (ifield f-fmax-frm) 4))))
(extract (set (ifield f-fmax-frm)
(or (sll (ifield f-fmax-30-1) 4) (ifield f-fmax-24-4))))
)
;------------------------------------------------------------------------------
; Core General registers
(dnf f-fmax-rm "opcode" (all-fmax-isas) 8 4)
;------------------------------------------------------------------------------
; Condition opcodes enum
(define-normal-insn-enum fmax-cond "condition opcode enum" (all-fmax-isas) FMAX_ f-fmax-8-4
("f" "u" "e" "ue" "l" "ul" "le" "ule"
"fi" "ui" "ei" "uei" "li" "uli" "lei" "ulei")
)
;******************************************************************************
; Hardware
;------------------------------------------------------------------------------
; FR registers
; Given a coprocessor register number N, expand to a
; name/index pair: ($frN N)
(define-pmacro (-fmax-fr-reg-pair n) ((.sym "fr" n) n))
(define-pmacro (-fmax-cr-reg-pair n) ((.sym "c" n) n))
; NOTE: This exists solely for the purpose of providing the proper register names for this coprocessor.
; GDB will use the hardware table generated from this declaration. The operands use h-cr
; from mep-core.cpu so that SID's semantic trace will be consistent between
; the core and the coprocessor but use parse/print handlers which reference the hardware table
; generated from this declarations
(define-hardware
(name h-cr-fmax)
(comment "Floating point registers")
(attrs all-fmax-isas VIRTUAL IS_FLOAT)
(type register SF (32))
(indices keyword "$"
(.splice (.unsplice (.map -fmax-fr-reg-pair (.iota 32)))
(.unsplice (.map -fmax-cr-reg-pair (.iota 32))))
)
(get (index) (c-call SF "fmax_fr_get_handler" index))
(set (index newval) (c-call VOID "fmax_fr_set_handler" index newval))
)
;------------------------------------------------------------------------------
; Control registers
; NOTE: This exists solely for the purpose of providing the proper register names for this coprocessor.
; GDB will use the hardware table generated from this declaration. The operands use h-ccr
; from mep-core.cpu so that SID's semantic trace will be consistent between
; the core and the coprocessor but use parse/print handlers which reference the hardware table
; generated from this declarations
(define-hardware
(name h-ccr-fmax)
(comment "Coprocessor Identifier and Revision Register")
(attrs all-fmax-isas VIRTUAL)
(type register USI (16))
(indices keyword "$" (
("cirr" 0) ("fcr0" 0) ("ccr0" 0)
("cbcr" 1) ("fcr1" 1) ("ccr1" 1)
("cerr" 15) ("fcr15" 15) ("ccr15" 15)
)
)
(set (index newval) (c-call VOID "h_ccr_set" index newval))
(get (index) (c-call SI "h_ccr_get" index))
)
;------------------------------------------------------------------------------
; Misc
(define-hardware
(name h-fmax-compare-i-p)
(comment "flag")
(attrs all-fmax-isas)
(type register USI)
)
;******************************************************************************
; Operands
;------------------------------------------------------------------------------
; FR Registers
(define-full-operand fmax-FRd "FRd" (all-fmax-isas (CDATA FMAX_FLOAT)) h-cr SF f-fmax-frd ((parse "fmax_cr") (print "fmax_cr")) () ())
(define-full-operand fmax-FRn "FRn" (all-fmax-isas (CDATA FMAX_FLOAT)) h-cr SF f-fmax-frn ((parse "fmax_cr") (print "fmax_cr")) () ())
(define-full-operand fmax-FRm "FRm" (all-fmax-isas (CDATA FMAX_FLOAT)) h-cr SF f-fmax-frm ((parse "fmax_cr") (print "fmax_cr")) () ())
(define-full-operand fmax-FRd-int "FRd as an integer" (all-fmax-isas (CDATA FMAX_INT)) h-cr SI f-fmax-frd ((parse "fmax_cr") (print "fmax_cr")) () ())
(define-full-operand fmax-FRn-int "FRn as an integer" (all-fmax-isas (CDATA FMAX_INT)) h-cr SI f-fmax-frn ((parse "fmax_cr") (print "fmax_cr")) () ())
;------------------------------------------------------------------------------
; Control registers
(define-full-operand fmax-CCRn "CCRn" (all-fmax-isas (CDATA REGNUM)) h-ccr DFLT f-fmax-4-4 ((parse "fmax_ccr") (print "fmax_ccr")) () ())
(dnop fmax-CIRR "CIRR" (all-fmax-isas SEM-ONLY) h-ccr 0)
(dnop fmax-CBCR "CBCR" (all-fmax-isas SEM-ONLY) h-ccr 1)
(dnop fmax-CERR "CERR" (all-fmax-isas SEM-ONLY) h-ccr 15)
;------------------------------------------------------------------------------
; Core General Registers
(dnop fmax-Rm "Rm" (all-fmax-isas) h-gpr f-fmax-rm)
;------------------------------------------------------------------------------
; misc
(dnop fmax-Compare-i-p "flag" (all-fmax-isas SEM-ONLY) h-fmax-compare-i-p f-nil)
;******************************************************************************
; Instructions
;------------------------------------------------------------------------------
; Binary Arithmetic
(define-pmacro (fmax-binary-arith op opc sem)
(dni op
(.str op " FRd,FRn,FRm")
(all-fmax-isas MAY_TRAP)
(.str op " ${fmax-FRd},${fmax-FRn},${fmax-FRm}")
(+ (f-fmax-0-4 #xF) fmax-FRd (f-fmax-8-4 opc) (f-fmax-12-4 #x7) (f-fmax-16-4 0)
fmax-FRn fmax-FRm (f-fmax-31-1 0))
sem
()
)
)
(fmax-binary-arith fadds #x0 (set fmax-FRd (add fmax-FRn fmax-FRm)))
(fmax-binary-arith fsubs #x1 (set fmax-FRd (sub fmax-FRn fmax-FRm)))
(fmax-binary-arith fmuls #x2 (set fmax-FRd (mul fmax-FRn fmax-FRm)))
(fmax-binary-arith fdivs #x3 (set fmax-FRd (div fmax-FRn fmax-FRm)))
;------------------------------------------------------------------------------
; Unary Arithmetic
(define-pmacro (fmax-unary-arith op opc sem)
(dni op
(.str op " FRd,FRn")
(all-fmax-isas MAY_TRAP)
(.str op " ${fmax-FRd},${fmax-FRn}")
(+ (f-fmax-0-4 #xF) fmax-FRd (f-fmax-8-4 opc) (f-fmax-12-4 #x7)
(f-fmax-16-4 0) fmax-FRn (f-fmax-24-4 0) (f-fmax-30-1 0) (f-fmax-31-1 0))
sem
()
)
)
(fmax-unary-arith fsqrts #x4 (set fmax-FRd (sqrt fmax-FRn)))
(fmax-unary-arith fabss #x5 (set fmax-FRd (abs fmax-FRn)))
(fmax-unary-arith fnegs #x7 (set fmax-FRd (neg fmax-FRn)))
(fmax-unary-arith fmovs #x6 (set fmax-FRd fmax-FRn))
;------------------------------------------------------------------------------
; Conversions
(define-pmacro (fmax-conv op opc1 opc2 opnd1 opnd2 sem)
(dni op
(.str op " FRd,FRn")
(all-fmax-isas MAY_TRAP)
(.str op " ${" opnd1 "},${" opnd2 "}")
(+ (f-fmax-0-4 #xF) opnd1 (f-fmax-8-4 opc1) (f-fmax-12-4 #x7)
(f-fmax-16-4 opc2) opnd2 (f-fmax-24-4 0) (f-fmax-30-1 0) (f-fmax-31-1 0))
sem
()
)
)
(fmax-conv froundws #xC #x0 fmax-FRd-int fmax-FRn (set fmax-FRd-int (c-call SI "fmax_froundws" fmax-FRn)))
(fmax-conv ftruncws #xD #x0 fmax-FRd-int fmax-FRn (set fmax-FRd-int (c-call SI "fmax_ftruncws" fmax-FRn)))
(fmax-conv fceilws #xE #x0 fmax-FRd-int fmax-FRn (set fmax-FRd-int (c-call SI "fmax_fceilws" fmax-FRn)))
(fmax-conv ffloorws #xF #x0 fmax-FRd-int fmax-FRn (set fmax-FRd-int (c-call SI "fmax_ffloorws" fmax-FRn)))
(fmax-conv fcvtws #x4 #x1 fmax-FRd-int fmax-FRn (set fmax-FRd-int (c-call SI "fmax_fcvtws" fmax-FRn)))
(fmax-conv fcvtsw #x0 #x9 fmax-FRd fmax-FRn-int (set fmax-FRd (float SF FPCONV-DEFAULT fmax-FRn-int)))
;------------------------------------------------------------------------------
; Comparisons
;
; Comparison with no exceptions
(define-pmacro (fmax-f-sem x y) (andif (gt x y) (lt x y))) ; do this to get exception detection
(define-pmacro (fmax-u-sem x y) (not (orif (lt x y) (orif (eq x y) (gt x y)))))
(define-pmacro (fmax-e-sem x y) (eq x y))
(define-pmacro (fmax-ue-sem x y) (not (orif (lt x y) (gt x y))))
(define-pmacro (fmax-l-sem x y) (lt x y))
(define-pmacro (fmax-ul-sem x y) (not (orif (gt x y) (eq x y))))
(define-pmacro (fmax-le-sem x y) (orif (lt x y) (eq x y)))
(define-pmacro (fmax-ule-sem x y) (not (gt x y)))
(define-pmacro (fmax-comp cond suffix exceptions)
(dni (.sym fcmp cond suffix s)
(.str "fcmp" cond suffix "s FRn,FRm")
;; Even though the instruction doesn't really trap if EXCEPTIONS
;; is zero, we don't want gcc to put it in a repeat or erepeat
;; block because of the hazards between fcmp instructions and
;; anything that reads CBCR.
(all-fmax-isas MAY_TRAP)
(.str "fcmp" cond suffix "s ${fmax-FRn},${fmax-FRm}")
(+ (f-fmax-0-4 #xF) (f-fmax-4-4 0) (.sym FMAX_ cond suffix) (f-fmax-12-4 #x7)
(f-fmax-16-4 #x2) (f-fmax-28-1 0) fmax-FRn fmax-FRm (f-fmax-31-1 0))
(sequence ()
(set fmax-Compare-i-p exceptions)
(set fmax-CBCR ((.sym fmax- cond -sem) fmax-FRn fmax-FRm))
(set fmax-Compare-i-p 0)
)
()
)
)
; Comparison with no exceptions
(fmax-comp f "" 0)
(fmax-comp u "" 0)
(fmax-comp e "" 0)
(fmax-comp ue "" 0)
(fmax-comp l "" 0)
(fmax-comp ul "" 0)
(fmax-comp le "" 0)
(fmax-comp ule "" 0)
; Comparison with exceptions
(fmax-comp f i 1)
(fmax-comp u i 1)
(fmax-comp e i 1)
(fmax-comp ue i 1)
(fmax-comp l i 1)
(fmax-comp ul i 1)
(fmax-comp le i 1)
(fmax-comp ule i 1)
;------------------------------------------------------------------------------
; Move to/from core registers
(dni cmov-frn-rm
"cmov FRn,Rm"
(all-fmax-isas (INTRINSIC "cmov1"))
"cmov ${fmax-FRd-int},${fmax-Rm}"
(+ (f-fmax-0-4 #xF) fmax-FRd-int fmax-Rm (f-fmax-12-4 #x7)
(f-fmax-16-4 #xF) (f-fmax-20-4 0) (f-fmax-24-4 0)
(f-fmax-29-1 0) (f-fmax-30-1 0) (f-fmax-31-1 0))
(set fmax-FRd-int fmax-Rm)
()
)
(dni cmov-rm-frn
"cmov Rm,FRn"
(all-fmax-isas (INTRINSIC "cmov2"))
"cmov ${fmax-Rm},${fmax-FRd-int}"
(+ (f-fmax-0-4 #xF) fmax-FRd-int fmax-Rm (f-fmax-12-4 #x7)
(f-fmax-16-4 #xF) (f-fmax-20-4 0) (f-fmax-24-4 0)
(f-fmax-29-1 0) (f-fmax-30-1 0) (f-fmax-31-1 1))
(set fmax-Rm fmax-FRd-int)
()
)
(dni cmovc-ccrn-rm
"cmovc CCRn,Rm"
(all-fmax-isas (INTRINSIC "cmovc1"))
"cmovc ${fmax-CCRn},${fmax-Rm}"
(+ (f-fmax-0-4 #xF) fmax-CCRn fmax-Rm (f-fmax-12-4 #x7)
(f-fmax-16-4 #xF) (f-fmax-20-4 0) (f-fmax-24-4 0)
(f-fmax-28-1 0) (f-fmax-29-1 0) (f-fmax-30-1 1) (f-fmax-31-1 0))
(set fmax-CCRn fmax-Rm)
()
)
(dni cmovc-rm-ccrn
"cmovc Rm,CCRn"
(all-fmax-isas (INTRINSIC "cmovc2"))
"cmovc ${fmax-Rm},${fmax-CCRn}"
(+ (f-fmax-0-4 #xF) fmax-CCRn fmax-Rm (f-fmax-12-4 #x7)
(f-fmax-16-4 #xF) (f-fmax-20-4 0) (f-fmax-24-4 0)
(f-fmax-28-1 0) (f-fmax-29-1 0) (f-fmax-30-1 1) (f-fmax-31-1 1))
(set fmax-Rm fmax-CCRn)
()
)