1 ;; Machine description for Xilinx MicroBlaze synchronization instructions.
2 ;; Copyright (C) 2011-2014 Free Software Foundation, Inc.
4 ;; This file is part of GCC.
6 ;; GCC is free software; you can redistribute it and/or modify it
7 ;; under the terms of the GNU General Public License as published
8 ;; by the Free Software Foundation; either version 3, or (at your
9 ;; option) any later version.
11 ;; GCC is distributed in the hope that it will be useful, but WITHOUT
12 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13 ;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
14 ;; License for more details.
16 ;; You should have received a copy of the GNU General Public License
17 ;; along with GCC; see the file COPYING3. If not see
18 ;; <http://www.gnu.org/licenses/>.
20 (define_insn "atomic_compare_and_swapsi"
21 [(match_operand:SI 0 "register_operand" "=&d") ;; bool output
22 (match_operand:SI 1 "register_operand" "=&d") ;; val output
23 (match_operand:SI 2 "nonimmediate_operand" "+Q") ;; memory
24 (match_operand:SI 3 "register_operand" "d") ;; expected value
25 (match_operand:SI 4 "register_operand" "d") ;; desired value
26 (match_operand:SI 5 "const_int_operand" "") ;; is_weak
27 (match_operand:SI 6 "const_int_operand" "") ;; mod_s
28 (match_operand:SI 7 "const_int_operand" "") ;; mod_f
29 (clobber (match_scratch:SI 8 "=&d"))]
32 output_asm_insn ("addc \tr0,r0,r0", operands);
33 output_asm_insn ("lwx \t%1,%y2,r0", operands);
34 output_asm_insn ("addic\t%8,r0,0", operands);
35 output_asm_insn ("bnei \t%8,.-8", operands);
36 output_asm_insn ("cmp \t%0,%1,%3", operands);
37 output_asm_insn ("bnei \t%0,.+16", operands);
38 output_asm_insn ("swx \t%4,%y2,r0", operands);
39 output_asm_insn ("addic\t%8,r0,0", operands);
40 output_asm_insn ("bnei \t%8,.-28", operands);