clang/lib/Headers/ia32intrin.h

/* ===-------- ia32intrin.h ---------------------------------------------------===
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 *===-----------------------------------------------------------------------===
 */

#ifndef __X86INTRIN_H
#error "Never use <ia32intrin.h> directly; include <x86intrin.h> instead."
#endif

#ifndef __IA32INTRIN_H
#define __IA32INTRIN_H

#ifdef __x86_64__
static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__))
__readeflags(void)
{
  unsigned long long __res = 0;
  __asm__ __volatile__ ("pushf\n\t"
                        "popq %0\n"
                        :"=r"(__res)
                        :
                        :
                       );
  return __res;
}

static __inline__ void __attribute__((__always_inline__, __nodebug__))
__writeeflags(unsigned long long __f)
{
  __asm__ __volatile__ ("pushq %0\n\t"
                        "popf\n"
                        :
                        :"r"(__f)
                        :"flags"
                       );
}

#else /* !__x86_64__ */
static __inline__ unsigned int __attribute__((__always_inline__, __nodebug__))
__readeflags(void)
{
  unsigned int __res = 0;
  __asm__ __volatile__ ("pushf\n\t"
                        "popl %0\n"
                        :"=r"(__res)
                        :
                        :
                       );
  return __res;
}

static __inline__ void __attribute__((__always_inline__, __nodebug__))
__writeeflags(unsigned int __f)
{
  __asm__ __volatile__ ("pushl %0\n\t"
                        "popf\n"
                        :
                        :"r"(__f)
                        :"flags"
                       );
}
#endif /* !__x86_64__ */

/* __rdtsc */
static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__))
__rdtsc(void) {
  unsigned int __eax, __edx;
  __asm__ ("rdtsc" : "=a" (__eax), "=d" (__edx));
  return ((unsigned long long)__edx << 32) | __eax;
}

#define _rdtsc() __rdtsc()

#endif /* __IA32INTRIN_H */