tests/tcg/x86_64/test-2413.c

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /* Copyright 2024 Linaro, Ltd. */
   3 /* See https://gitlab.com/qemu-project/qemu/-/issues/2413 */
   4
   5 #include <assert.h>
   6
   7 void test(unsigned long *a, unsigned long *d, unsigned long c)
   8 {
   9     asm("xorl %%eax, %%eax\n\t"
  10         "xorl %%edx, %%edx\n\t"
  11         "testb $0x20, %%cl\n\t"
  12         "sete %%al\n\t"
  13         "setne %%dl\n\t"
  14         "shll %%cl, %%eax\n\t"
  15         "shll %%cl, %%edx\n\t"
  16         : "=a"(*a), "=d"(*d)
  17         : "c"(c));
  18 }
  19
  20 int main(void)
  21 {
  22     unsigned long a, c, d;
  23
  24     for (c = 0; c < 64; c++) {
  25         test(&a, &d, c);
  26         assert(a == (c & 0x20 ? 0 : 1u << (c & 0x1f)));
  27         assert(d == (c & 0x20 ? 1u << (c & 0x1f) : 0));
  28     }
  29     return 0;
  30 }