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#include <cstdlib>
int main(int argc, char* argv[])
{
unsigned int msr=0;
unsigned int divisor=2;
unsigned int buffer;
__asm__ __volatile__
(
#if defined(__x86_64__) || defined(__amd64__)
"mov %1, %%rdi ;\n"
"movl %2, %%edx ;\n"
#else
"mov %1, %%edi ;\n"
"movl %2, %%edx ;\n"
#endif
// xstore-rng
".byte 0x0f, 0xa7, 0xc0 ;\n"
#if defined(__x86_64__) || defined(__amd64__)
"andq %%rax, 0x1f ;\n"
"movl %%eax, %0 ;\n"
#else
"andl %%eax, 0x1f ;\n"
"movl %%eax, %0 ;\n"
#endif
: "=g" (msr) : "g" (buffer), "g" (divisor)
#if defined(__x86_64__) || defined(__amd64__)
: "rax", "rdx", "rdi", "cc"
#else
: "eax", "edx", "edi", "cc"
#endif
);
return 0;
}
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