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1 ;; Machine description for Xilinx MicroBlaze synchronization instructions.
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2 ;; Copyright (C) 2011-2020 Free Software Foundation, Inc.
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3 ;;
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4 ;; This file is part of GCC.
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5 ;;
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6 ;; GCC is free software; you can redistribute it and/or modify it
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7 ;; under the terms of the GNU General Public License as published
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8 ;; by the Free Software Foundation; either version 3, or (at your
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9 ;; option) any later version.
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10 ;;
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11 ;; GCC is distributed in the hope that it will be useful, but WITHOUT
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12 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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13 ;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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14 ;; License for more details.
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15 ;;
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16 ;; You should have received a copy of the GNU General Public License
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17 ;; along with GCC; see the file COPYING3. If not see
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18 ;; <http://www.gnu.org/licenses/>.
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19
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20 (define_insn "atomic_compare_and_swapsi"
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21 [(match_operand:SI 0 "register_operand" "=&d") ;; bool output
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22 (match_operand:SI 1 "register_operand" "=&d") ;; val output
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23 (match_operand:SI 2 "nonimmediate_operand" "+Q") ;; memory
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24 (match_operand:SI 3 "register_operand" "d") ;; expected value
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25 (match_operand:SI 4 "register_operand" "d") ;; desired value
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26 (match_operand:SI 5 "const_int_operand" "") ;; is_weak
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27 (match_operand:SI 6 "const_int_operand" "") ;; mod_s
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28 (match_operand:SI 7 "const_int_operand" "") ;; mod_f
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29 (clobber (match_scratch:SI 8 "=&d"))]
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30 ""
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31 {
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32 output_asm_insn ("addc \tr0,r0,r0", operands);
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33 output_asm_insn ("lwx \t%1,%y2,r0", operands);
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34 output_asm_insn ("addic\t%8,r0,0", operands);
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35 output_asm_insn ("bnei \t%8,.-8", operands);
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36 output_asm_insn ("cmp \t%0,%1,%3", operands);
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37 output_asm_insn ("bnei \t%0,.+16", operands);
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38 output_asm_insn ("swx \t%4,%y2,r0", operands);
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39 output_asm_insn ("addic\t%8,r0,0", operands);
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40 output_asm_insn ("bnei \t%8,.-28", operands);
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41 return "";
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42 }
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43 )
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