blob: d36894918857847255e8bc0e460186484a326e03 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
|
/* Test fbstp instruction. */
#include <stdio.h>
#include <string.h>
int main(void)
{
int ret = 0;
unsigned char out[10];
memset(out, 0xfe, sizeof out);
__asm__ volatile ("fbstp %0" : "=m" (out) : "t" (-0.0L) : "st");
out[9] &= 0x80;
if (memcmp(out, "\0\0\0\0\0\0\0\0\0\x80", sizeof out) != 0) {
printf("FAIL: fbstp -0\n");
ret = 1;
}
memset(out, 0x12, sizeof out);
__asm__ volatile ("fbstp %0" : "=m" (out) : "t" (-0.1L) : "st");
out[9] &= 0x80;
if (memcmp(out, "\0\0\0\0\0\0\0\0\0\x80", sizeof out) != 0) {
printf("FAIL: fbstp -0.1\n");
ret = 1;
}
return ret;
}
|
