#include <amd64/msr.h>
#include <libk/std.h>

/// Read a model-specific register
uint64_t amd64_rdmsr (uint32_t msr) {
  uint32_t low, high;
  __asm__ volatile ("rdmsr" : "=a"(low), "=d"(high) : "c"(msr));
  return ((uint64_t)high << 32 | (uint64_t)low);
}

/// Write a model-specific register
void amd64_wrmsr (uint32_t msr, uint64_t value) {
  uint32_t low = (uint32_t)(value & 0xFFFFFFFF);
  uint32_t high = (uint32_t)(value >> 32);
  __asm__ volatile ("wrmsr" ::"c"(msr), "a"(low), "d"(high));
}