qemu/tests/tcg/openrisc/test_mul.c

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#include <stdio.h>
int main(void)
{
int a, b, c;
int result;
b = 0x4;
c = 0x1;
result = 0x4;
__asm
("l.mul %0, %1, %2\n\t"
: "=r"(a)
: "r"(b), "r"(c)
);
if (a != result) {
printf("mul error\n");
return -1;
}
b = 0x1;
c = 0x0;
result = 0x0;
__asm
("l.mul %0, %1, %2\n\t"
: "=r"(a)
: "r"(b), "r"(c)
);
if (a != result) {
printf("mul error\n");
return -1;
}
b = 0x1;
c = 0xff;
result = 0xff;
__asm
("l.mul %0, %1, %2\n\t"
: "=r"(a)
: "r"(b), "r"(c)
);
if (a != result) {
printf("mul error\n");
return -1;
}
b = 0x7fffffff;
c = 0x2;
result = 0xfffffffe;
__asm
("l.mul %0, %1, %2\n\t"
: "=r"(a)
: "r"(b), "r"(c)
);
if (a != result) {
printf("mul error\n");
return -1;
}
return 0;
}