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;; Machine Description for Renesas RL78 processors
;; Copyright (C) 2011-2013 Free Software Foundation, Inc.
;; Contributed by Red Hat.
;; This file is part of GCC.
;; GCC 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, or (at your option)
;; any later version.
;; GCC 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 GCC; see the file COPYING3. If not see
;; <http://www.gnu.org/licenses/>.
; Constraints in use:
; core:
; V X g i m n o p r s < >
; 0..9
; I..Q - integers
; Int8 = 0..255
; Int3 = 1..7
; J = -255..0
; K = 1
; L = -1
; M = 0
; N = 2
; O = -2
; P = 1..15
; E..H - float constants
; RL78-specific
; a x b c d e h l w - 8-bit regs
; A B D T S - 16-bit regs
; R = all regular registers (A-L)
; Y - any valid memory
; Wxx - various memory addressing modes
; Qxx - conditionals
; U = usual memory references mov-able to/from AX
; v = virtual registers
; Zxx = specific virtual registers
(define_constraint "Int8"
"Integer constant in the range 0 @dots{} 255."
(and (match_code "const_int")
(match_test "IN_RANGE (ival, 0, 255)")))
(define_constraint "Int3"
"Integer constant in the range 1 @dots{} 7."
(and (match_code "const_int")
(match_test "IN_RANGE (ival, 1, 7)")))
(define_constraint "Iv08"
"@internal
Integer constant equal to 8."
(and (match_code "const_int")
(match_test "IN_RANGE (ival, 8, 8)")))
(define_constraint "Iv16"
"@internal
Integer constant equal to 16."
(and (match_code "const_int")
(match_test "IN_RANGE (ival, 16, 16)")))
(define_constraint "Iv24"
"@internal
Integer constant equal to 24."
(and (match_code "const_int")
(match_test "IN_RANGE (ival, 24, 24)")))
(define_constraint "Is09"
"@internal
Integer constant in the range 9 @dots{} 15 (for shifts)."
(and (match_code "const_int")
(match_test "IN_RANGE (ival, 9, 15)")))
(define_constraint "Is17"
"@internal
Integer constant in the range 17 @dots{} 23 (for shifts)."
(and (match_code "const_int")
(match_test "IN_RANGE (ival, 17, 23)")))
(define_constraint "Is25"
"@internal
Integer constant in the range 25 @dots{} 31 (for shifts)."
(and (match_code "const_int")
(match_test "IN_RANGE (ival, 25, 31)")))
(define_constraint "ISsi"
"@internal
Integer constant with bit 31 set."
(and (match_code "const_int")
(match_test "(ival & 0x80000000) != 0")))
(define_constraint "IShi"
"@internal
Integer constant with bit 15 set."
(and (match_code "const_int")
(match_test "(ival & 0x8000) != 0")))
(define_constraint "ISqi"
"@internal
Integer constant with bit 7 set."
(and (match_code "const_int")
(match_test "(ival & 0x80) != 0")))
(define_constraint "J"
"Integer constant in the range -255 @dots{} 0"
(and (match_code "const_int")
(match_test "IN_RANGE (ival, -255, 0)")))
(define_constraint "K"
"Integer constant 1."
(and (match_code "const_int")
(match_test "IN_RANGE (ival, 1, 1)")))
(define_constraint "L"
"Integer constant -1."
(and (match_code "const_int")
(match_test "IN_RANGE (ival, -1, -1)")))
(define_constraint "M"
"Integer constant 0."
(and (match_code "const_int")
(match_test "IN_RANGE (ival, 0, 0)")))
(define_constraint "N"
"Integer constant 2."
(and (match_code "const_int")
(match_test "IN_RANGE (ival, 2, 2)")))
(define_constraint "O"
"Integer constant -2."
(and (match_code "const_int")
(match_test "IN_RANGE (ival, -2, -2)")))
(define_constraint "P"
"Integer constant 1..15"
(and (match_code "const_int")
(match_test "IN_RANGE (ival, 1, 15)")))
(define_register_constraint "R" "QI_REGS"
"@code{A} through @code{L} registers.")
(define_register_constraint "a" "AREG"
"The @code{A} register.")
(define_register_constraint "x" "XREG"
"The @code{X} register.")
(define_register_constraint "b" "BREG"
"The @code{B} register.")
(define_register_constraint "c" "CREG"
"The @code{C} register.")
(define_register_constraint "d" "DREG"
"The @code{D} register.")
(define_register_constraint "e" "EREG"
"The @code{E} register.")
(define_register_constraint "h" "HREG"
"The @code{H} register.")
(define_register_constraint "l" "LREG"
"The @code{L} register.")
(define_register_constraint "w" "PSWREG"
"The @code{PSW} register.")
(define_register_constraint "A" "AXREG"
"The @code{AX} register.")
(define_register_constraint "B" "BCREG"
"The @code{BC} register.")
(define_register_constraint "D" "DEREG"
"The @code{DE} register.")
; because H + L = T, assuming A=1.
(define_register_constraint "T" "HLREG"
"The @code{HL} register.")
(define_register_constraint "S" "SPREG"
"The @code{SP} register.")
(define_register_constraint "v" "V_REGS"
"The virtual registers.")
(define_register_constraint "Z08W" "R8W_REGS"
"The R8 register, HImode.")
(define_register_constraint "Z10W" "R10W_REGS"
"The R10 register, HImode.")
(define_register_constraint "Zint" "INT_REGS"
"The interrupt registers.")
; All the memory addressing schemes the RL78 supports
; of the form W {register} {bytes of offset}
; or W {register} {register}
; Additionally, the Cxx forms are the same as the Wxx forms, but without
; the ES: override.
; absolute address
(define_memory_constraint "Cab"
"[addr]"
(and (match_code "mem")
(ior (match_test "CONSTANT_P (XEXP (op, 0))")
(match_test "GET_CODE (XEXP (op, 0)) == PLUS && GET_CODE (XEXP (XEXP (op, 0), 0)) == SYMBOL_REF"))
)
)
(define_memory_constraint "Wab"
"es:[addr]"
(match_test "(rl78_es_addr (op) && satisfies_constraint_Cab (rl78_es_base (op)))
|| satisfies_constraint_Cab (op)")
)
(define_memory_constraint "Cbc"
"word16[BC]"
(and (match_code "mem")
(ior
(and (match_code "reg" "0")
(match_test "REGNO (XEXP (op, 0)) == BC_REG"))
(and (match_code "plus" "0")
(and (and (match_code "reg" "00")
(match_test "REGNO (XEXP (XEXP (op, 0), 0)) == BC_REG"))
(match_test "uword_operand (XEXP (XEXP (op, 0), 1), VOIDmode)"))))
)
)
(define_memory_constraint "Wbc"
"es:word16[BC]"
(match_test "(rl78_es_addr (op) && satisfies_constraint_Cbc (rl78_es_base (op)))
|| satisfies_constraint_Cbc (op)")
)
(define_memory_constraint "Cde"
"[DE]"
(and (match_code "mem")
(and (match_code "reg" "0")
(match_test "REGNO (XEXP (op, 0)) == DE_REG")))
)
(define_memory_constraint "Wde"
"es:[DE]"
(match_test "(rl78_es_addr (op) && satisfies_constraint_Cde (rl78_es_base (op)))
|| satisfies_constraint_Cde (op)")
)
(define_memory_constraint "Cca"
"[AX..HL] for calls"
(and (match_code "mem")
(and (match_code "reg" "0")
(match_test "REGNO (XEXP (op, 0)) <= HL_REG")))
)
(define_memory_constraint "Wca"
"es:[AX..HL] for calls"
(match_test "(rl78_es_addr (op) && satisfies_constraint_Cca (rl78_es_base (op)))
|| satisfies_constraint_Cca (op)")
)
(define_memory_constraint "Ccv"
"[AX..HL,r8-r31] for calls"
(and (match_code "mem")
(and (match_code "reg" "0")
(match_test "REGNO (XEXP (op, 0)) < 32")))
)
(define_memory_constraint "Wcv"
"es:[AX..HL,r8-r31] for calls"
(match_test "(rl78_es_addr (op) && satisfies_constraint_Ccv (rl78_es_base (op)))
|| satisfies_constraint_Ccv (op)")
)
(define_memory_constraint "Cd2"
"word16[DE]"
(and (match_code "mem")
(ior
(and (match_code "reg" "0")
(match_test "REGNO (XEXP (op, 0)) == DE_REG"))
(and (match_code "plus" "0")
(and (and (match_code "reg" "00")
(match_test "REGNO (XEXP (XEXP (op, 0), 0)) == DE_REG"))
(match_test "uword_operand (XEXP (XEXP (op, 0), 1), VOIDmode)"))))
)
)
(define_memory_constraint "Wd2"
"es:word16[DE]"
(match_test "(rl78_es_addr (op) && satisfies_constraint_Cd2 (rl78_es_base (op)))
|| satisfies_constraint_Cd2 (op)")
)
(define_memory_constraint "Chl"
"[HL]"
(and (match_code "mem")
(and (match_code "reg" "0")
(match_test "REGNO (XEXP (op, 0)) == HL_REG")))
)
(define_memory_constraint "Whl"
"es:[HL]"
(match_test "(rl78_es_addr (op) && satisfies_constraint_Chl (rl78_es_base (op)))
|| satisfies_constraint_Chl (op)")
)
(define_memory_constraint "Ch1"
"byte8[HL]"
(and (match_code "mem")
(and (match_code "plus" "0")
(and (and (match_code "reg" "00")
(match_test "REGNO (XEXP (XEXP (op, 0), 0)) == HL_REG"))
(match_test "ubyte_operand (XEXP (XEXP (op, 0), 1), VOIDmode)"))))
)
(define_memory_constraint "Wh1"
"es:byte8[HL]"
(match_test "(rl78_es_addr (op) && satisfies_constraint_Ch1 (rl78_es_base (op)))
|| satisfies_constraint_Ch1 (op)")
)
(define_memory_constraint "Chb"
"[HL+B]"
(and (match_code "mem")
(match_test "rl78_hl_b_c_addr_p (XEXP (op, 0))"))
)
(define_memory_constraint "Whb"
"es:[HL+B]"
(match_test "(rl78_es_addr (op) && satisfies_constraint_Chb (rl78_es_base (op)))
|| satisfies_constraint_Chb (op)")
)
(define_memory_constraint "Cs1"
"word8[SP]"
(and (match_code "mem")
(ior
(and (match_code "reg" "0")
(match_test "REGNO (XEXP (op, 0)) == SP_REG"))
(and (match_code "plus" "0")
(and (and (match_code "reg" "00")
(match_test "REGNO (XEXP (XEXP (op, 0), 0)) == SP_REG"))
(match_test "ubyte_operand (XEXP (XEXP (op, 0), 1), VOIDmode)"))))
)
)
(define_memory_constraint "Ws1"
"es:word8[SP]"
(match_test "(rl78_es_addr (op) && satisfies_constraint_Cs1 (rl78_es_base (op)))
|| satisfies_constraint_Cs1 (op)")
)
(define_memory_constraint "Wfr"
"ES/CS far pointer"
(and (match_code "mem")
(match_test "rl78_far_p (op)"))
)
(define_memory_constraint "Y"
"any near legitimate memory access"
(and (match_code "mem")
(match_test "!rl78_far_p (op) && rl78_as_legitimate_address (VOIDmode, XEXP (op, 0), true, ADDR_SPACE_GENERIC)"))
)
(define_memory_constraint "U"
"memory references valid with mov to/from a/ax"
(and (match_code "mem")
(match_test "rl78_virt_insns_ok ()
|| satisfies_constraint_Wab (op)
|| satisfies_constraint_Wbc (op)
|| satisfies_constraint_Wde (op)
|| satisfies_constraint_Wd2 (op)
|| satisfies_constraint_Whl (op)
|| satisfies_constraint_Wh1 (op)
|| satisfies_constraint_Whb (op)
|| satisfies_constraint_Ws1 (op)
|| satisfies_constraint_Wfr (op) ")))
(define_memory_constraint "Qbi"
"built-in compare types"
(match_code "eq,ne,gtu,ltu,geu,leu"))
(define_memory_constraint "Qsc"
"synthetic compares"
(match_code "gt,lt,ge,le"))
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