1 ;; Machine Description for Altera Nios II synchronization primitives.
2 ;; Copyright (C) 2014-2016 Free Software Foundation, Inc.
3 ;; Contributed by Mentor Graphics, Inc.
5 ;; This file is part of GCC.
7 ;; GCC is free software; you can redistribute it and/or modify
8 ;; it under the terms of the GNU General Public License as published by
9 ;; the Free Software Foundation; either version 3, or (at your option)
12 ;; GCC is distributed in the hope that it will be useful,
13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 ;; GNU General Public License for more details.
17 ;; You should have received a copy of the GNU General Public License
18 ;; along with GCC; see the file COPYING3. If not see
19 ;; <http://www.gnu.org/licenses/>.
21 (define_int_iterator UNSPECV_LOAD_EXCLUSIVE [UNSPECV_LDEX UNSPECV_LDSEX])
22 (define_int_attr load_exclusive [(UNSPECV_LDEX "ldex")
23 (UNSPECV_LDSEX "ldsex")])
24 (define_insn "<load_exclusive>"
25 [(set (match_operand:SI 0 "register_operand" "=r")
27 [(match_operand:SI 1 "ldstex_memory_operand" "v")]
28 UNSPECV_LOAD_EXCLUSIVE))]
30 "<load_exclusive>\\t%0, %A1"
31 [(set_attr "type" "ld")])
33 (define_int_iterator UNSPECV_STORE_EXCLUSIVE [UNSPECV_STEX UNSPECV_STSEX])
34 (define_int_attr store_exclusive [(UNSPECV_STEX "stex")
35 (UNSPECV_STSEX "stsex")])
36 (define_insn "<store_exclusive>"
37 [(set (match_operand:SI 2 "register_operand" "=r")
38 (unspec_volatile:SI [(const_int 0)] UNSPECV_STORE_EXCLUSIVE))
39 (set (match_operand:SI 0 "ldstex_memory_operand" "=v")
41 [(match_operand:SI 1 "reg_or_0_operand" "rM")]
42 UNSPECV_STORE_EXCLUSIVE))]
44 "<store_exclusive>\\t%2, %z1, %A0"
45 [(set_attr "type" "st")])