clang API Documentation

ia32intrin.h
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00001 /* ===-------- ia32intrin.h ---------------------------------------------------===
00002  *
00003  * Permission is hereby granted, free of charge, to any person obtaining a copy
00004  * of this software and associated documentation files (the "Software"), to deal
00005  * in the Software without restriction, including without limitation the rights
00006  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00007  * copies of the Software, and to permit persons to whom the Software is
00008  * furnished to do so, subject to the following conditions:
00009  *
00010  * The above copyright notice and this permission notice shall be included in
00011  * all copies or substantial portions of the Software.
00012  *
00013  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00014  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00015  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00016  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00017  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00018  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00019  * THE SOFTWARE.
00020  *
00021  *===-----------------------------------------------------------------------===
00022  */
00023 
00024 #ifndef __X86INTRIN_H
00025 #error "Never use <ia32intrin.h> directly; include <x86intrin.h> instead."
00026 #endif
00027 
00028 #ifndef __IA32INTRIN_H
00029 #define __IA32INTRIN_H
00030 
00031 #ifdef __x86_64__
00032 static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__))
00033 __readeflags(void)
00034 {
00035   unsigned long long __res = 0;
00036   __asm__ __volatile__ ("pushf\n\t"
00037                         "popq %0\n"
00038                         :"=r"(__res)
00039                         :
00040                         :
00041                        );
00042   return __res;
00043 }
00044 
00045 static __inline__ void __attribute__((__always_inline__, __nodebug__))
00046 __writeeflags(unsigned long long __f)
00047 {
00048   __asm__ __volatile__ ("pushq %0\n\t"
00049                         "popf\n"
00050                         :
00051                         :"r"(__f)
00052                         :"flags"
00053                        );
00054 }
00055 
00056 #else /* !__x86_64__ */
00057 static __inline__ unsigned int __attribute__((__always_inline__, __nodebug__))
00058 __readeflags(void)
00059 {
00060   unsigned int __res = 0;
00061   __asm__ __volatile__ ("pushf\n\t"
00062                         "popl %0\n"
00063                         :"=r"(__res)
00064                         :
00065                         :
00066                        );
00067   return __res;
00068 }
00069 
00070 static __inline__ void __attribute__((__always_inline__, __nodebug__))
00071 __writeeflags(unsigned int __f)
00072 {
00073   __asm__ __volatile__ ("pushl %0\n\t"
00074                         "popf\n"
00075                         :
00076                         :"r"(__f)
00077                         :"flags"
00078                        );
00079 }
00080 #endif /* !__x86_64__ */
00081 
00082 static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__))
00083 __rdpmc(int __A) {
00084   return __builtin_ia32_rdpmc(__A);
00085 }
00086 
00087 /* __rdtsc */
00088 static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__))
00089 __rdtsc(void) {
00090   return __builtin_ia32_rdtsc();
00091 }
00092 
00093 /* __rdtscp */
00094 static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__))
00095 __rdtscp(unsigned int *__A) {
00096   return __builtin_ia32_rdtscp(__A);
00097 }
00098 
00099 #define _rdtsc() __rdtsc()
00100 
00101 #endif /* __IA32INTRIN_H */