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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
static void subv(const int a, const int b, const int res, const int carry)
{
int o = a, c;
asm volatile("subv %2,%0\n"
"movt %1\n"
: "+r"(o), "=r"(c) : "r"(b) : );
if (c != carry || o != res) {
printf("SUBV %d, %d = %d/%d [T = %d/%d]\n", a, b, o, res, c, carry);
abort();
}
}
int main(void)
{
subv(INT_MIN, 1, INT_MAX, 1);
subv(INT_MAX, -1, INT_MIN, 1);
subv(INT_MAX, 1, INT_MAX - 1, 0);
subv(0, 1, -1, 0);
subv(-1, -1, 0, 0);
return 0;
}
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