| ;------------------------------------------------------------------------------ | |
| ; | |
| ; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR> | |
| ; SPDX-License-Identifier: BSD-2-Clause-Patent | |
| ; | |
| ; Module Name: | |
| ; | |
| ; ReadTsc.Asm | |
| ; | |
| ; Abstract: | |
| ; | |
| ; AsmReadTsc function | |
| ; | |
| ; Notes: | |
| ; | |
| ;------------------------------------------------------------------------------ | |
| DEFAULT REL | |
| SECTION .text | |
| ;------------------------------------------------------------------------------ | |
| ; UINT64 | |
| ; EFIAPI | |
| ; AsmReadTsc ( | |
| ; VOID | |
| ; ); | |
| ;------------------------------------------------------------------------------ | |
| global ASM_PFX(AsmReadTsc) | |
| ASM_PFX(AsmReadTsc): | |
| rdtsc | |
| shl rdx, 0x20 | |
| or rax, rdx | |
| ret | |