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  • Committer: Phil Dennis-Jordan
  • Date: 2017-07-21 08:03:43 UTC
  • mfrom: (1.1.1)
  • Revision ID: phil@philjordan.eu-20170721080343-2yr2vdj7713czahv
New upstream release 2.9.0.

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roms/ipxe/src/arch/x86_64/include/bits/profile.h
 
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#ifndef _BITS_PROFILE_H
 
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#define _BITS_PROFILE_H
 
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/** @file
 
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 *
 
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 * Profiling
 
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 *
 
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 */
 
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
 
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#include <stdint.h>
 
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/**
 
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 * Get profiling timestamp
 
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 *
 
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 * @ret timestamp       Timestamp
 
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 */
 
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static inline __attribute__ (( always_inline )) uint64_t
 
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profile_timestamp ( void ) {
 
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        uint32_t eax;
 
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        uint32_t edx;
 
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        /* Read timestamp counter */
 
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        __asm__ __volatile__ ( "rdtsc" : "=a" ( eax ), "=d" ( edx ) );
 
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        return ( ( ( ( uint64_t ) edx ) << 32 ) | eax );
 
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}
 
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#endif /* _BITS_PROFILE_H */