tests/tcg/hexagon/dual_stores.c

   1 /*
   2  *  Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
   3  *
   4  *  This program is free software; you can redistribute it and/or modify
   5  *  it under the terms of the GNU General Public License as published by
   6  *  the Free Software Foundation; either version 2 of the License, or
   7  *  (at your option) any later version.
   8  *
   9  *  This program is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *  GNU General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU General Public License
  15  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include <stdio.h>
  19 #include <stdint.h>
  20
  21 int err;
  22
  23 #include "hex_test.h"
  24
  25 /*
  26  *  Make sure that two stores in the same packet honor proper
  27  *  semantics: slot 1 executes first, then slot 0.
  28  *  This is important when the addresses overlap.
  29  */
  30 static inline void dual_stores(int32_t *p, int8_t *q, int32_t x, int8_t y)
  31 {
  32   asm volatile("{\n\t"
  33                "    memw(%0) = %2\n\t"
  34                "    memb(%1) = %3\n\t"
  35                "}\n"
  36                :: "r"(p), "r"(q), "r"(x), "r"(y)
  37                : "memory");
  38 }
  39
  40 typedef union {
  41     int32_t word;
  42     int8_t byte;
  43 } Dual;
  44
  45 int main()
  46 {
  47     Dual d;
  48
  49     d.word = ~0;
  50     dual_stores(&d.word, &d.byte, 0x12345678, 0xff);
  51     check32(d.word, 0x123456ff);
  52
  53     puts(err ? "FAIL" : "PASS");
  54     return err;
  55 }