| #ifndef _BITS_PROFILE_H |
| #define _BITS_PROFILE_H |
| |
| /** @file |
| * |
| * Profiling |
| * |
| */ |
| |
| FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); |
| FILE_SECBOOT ( PERMITTED ); |
| |
| #include <stdint.h> |
| |
| /** |
| * Get profiling timestamp |
| * |
| * @ret timestamp Timestamp |
| */ |
| static inline __attribute__ (( always_inline )) unsigned long |
| profile_timestamp ( void ) { |
| uint32_t eax; |
| uint32_t edx; |
| |
| /* Read timestamp counter */ |
| __asm__ __volatile__ ( "rdtsc" : "=a" ( eax ), "=d" ( edx ) ); |
| return ( ( ( ( uint64_t ) edx ) << 32 ) | eax ); |
| } |
| |
| #endif /* _BITS_PROFILE_H */ |
