qemu-e2k/tests/tcg/openrisc/test_addc.c

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#include <stdio.h>
int main(void)
{
int a, b, c;
int result;
b = 0x01;
c = 0xffffffff;
result = 0;
__asm
("l.add r1, r1, r0\n\t" /* clear carry */
"l.addc %0, %1, %2\n\t"
: "=r"(a)
: "r"(b), "r"(c)
);
if (a != result) {
printf("first addc error\n");
return -1;
}
b = 0x01;
c = 0xffffffff;
result = 0x80000001;
__asm
("l.add r1, r1, r0\n\t" /* clear carry */
"l.addc %0, %1, %2\n\t"
"l.movhi %2, 0x7fff\n\t"
"l.ori %2, %2, 0xffff\n\t"
"l.addc %0, %1, %2\n\t"
: "=r"(a)
: "r"(b), "r"(c)
);
if (a != result) {
printf("addc error\n");
return -1;
}
return 0;
}