diff options
Diffstat (limited to 'qemu/roms/ipxe/src/arch/i386/include/ipxe/rdtsc_timer.h')
-rw-r--r-- | qemu/roms/ipxe/src/arch/i386/include/ipxe/rdtsc_timer.h | 39 |
1 files changed, 0 insertions, 39 deletions
diff --git a/qemu/roms/ipxe/src/arch/i386/include/ipxe/rdtsc_timer.h b/qemu/roms/ipxe/src/arch/i386/include/ipxe/rdtsc_timer.h deleted file mode 100644 index 598f4bb08..000000000 --- a/qemu/roms/ipxe/src/arch/i386/include/ipxe/rdtsc_timer.h +++ /dev/null @@ -1,39 +0,0 @@ -#ifndef _IPXE_RDTSC_TIMER_H -#define _IPXE_RDTSC_TIMER_H - -/** @file - * - * RDTSC timer - * - */ - -FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); - -#ifdef TIMER_RDTSC -#define TIMER_PREFIX_rdtsc -#else -#define TIMER_PREFIX_rdtsc __rdtsc_ -#endif - -/** - * RDTSC values can easily overflow an unsigned long. We discard the - * low-order bits in order to obtain sensibly-scaled values. - */ -#define TSC_SHIFT 8 - -/** - * Get current system time in ticks - * - * @ret ticks Current time, in ticks - */ -static inline __always_inline unsigned long -TIMER_INLINE ( rdtsc, currticks ) ( void ) { - unsigned long ticks; - - __asm__ __volatile__ ( "rdtsc\n\t" - "shrdl %1, %%edx, %%eax\n\t" - : "=a" ( ticks ) : "i" ( TSC_SHIFT ) : "edx" ); - return ticks; -} - -#endif /* _IPXE_RDTSC_TIMER_H */ |