/* SPDX-License-Identifier: GPL-2.0-or-later */ /* Copyright 2024 Linaro, Ltd. */ /* See https://gitlab.com/qemu-project/qemu/-/issues/2413 */ #include void test(unsigned long *a, unsigned long *d, unsigned long c) { asm("xorl %%eax, %%eax\n\t" "xorl %%edx, %%edx\n\t" "testb $0x20, %%cl\n\t" "sete %%al\n\t" "setne %%dl\n\t" "shll %%cl, %%eax\n\t" "shll %%cl, %%edx\n\t" : "=a"(*a), "=d"(*d) : "c"(c)); } int main(void) { unsigned long a, c, d; for (c = 0; c < 64; c++) { test(&a, &d, c); assert(a == (c & 0x20 ? 0 : 1u << (c & 0x1f))); assert(d == (c & 0x20 ? 1u << (c & 0x1f) : 0)); } return 0; }