25 lines
409 B
C
25 lines
409 B
C
|
|
||
|
|
inline bool cansetflag (u32 flag)
|
||
|
|
{
|
||
|
|
u32 r1, r2;
|
||
|
|
asm("pushfl\n"
|
||
|
|
"popl %0\n"
|
||
|
|
"movl %0, %1\n"
|
||
|
|
"xorl %2, %0\n"
|
||
|
|
"pushl %0\n"
|
||
|
|
"popfl\n"
|
||
|
|
"pushfl\n"
|
||
|
|
"popl %0\n"
|
||
|
|
"pushl %1\n"
|
||
|
|
"popfl\n"
|
||
|
|
: "=&r" (r1), "=&r" (r2)
|
||
|
|
: "ir" (flag)
|
||
|
|
);
|
||
|
|
return ((r1 ^ r2) & flag) != 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void cpuid(u32 op, u32 *eax, u32 *ebx,u32 *ecx, u32 *edx)
|
||
|
|
{
|
||
|
|
asm("cpuid" : "=a" (*eax), "=b" (*ebx), "=c" (*ecx), "=d" (*edx) : "a" (op) : "cc");
|
||
|
|
}
|