#ifdef TLS

#include <sys/mman.h>
#include <asm/prctl.h>
#include <sys/prctl.h>

#define PER_THREAD_MEMORY_START typedef struct _TLS_ZONE { \
  unsigned long _tls_zone_address;

#define PER_THREAD_MEMORY_END } TLS_ZONE; \
  int TLS_SIZE = sizeof(TLS_ZONE);

unsigned long tls_address(void)
{
  unsigned long addr;
  asm("mov $0x0, %%rax; \n"
      "mov %%gs: (%%rax), %%rbx"
      : "=b" (addr) ::);
  return addr;
}

#define READ_THREAD_VARIABLE(name) \
  ((TLS_ZONE*)(tls_address()))->name

#define WRITE_THREAD_VARIABLE(name, value) \
  ((TLS_ZONE*)(tls_address()))->name = value;

#endif