projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| e1f414b6 | 1 | ;------------------------------------------------------------------------------\r |
| 2 | ;\r | |
| 88a75d26 | 3 | ; Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>\r |
| bb817c56 | 4 | ; This program and the accompanying materials\r |
| e1f414b6 | 5 | ; are licensed and made available under the terms and conditions of the BSD License\r |
| 6 | ; which accompanies this distribution. The full text of the license may be found at\r | |
| e4a34497 | 7 | ; http://opensource.org/licenses/bsd-license.php.\r |
| e1f414b6 | 8 | ;\r |
| 9 | ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
| 10 | ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 11 | ;\r | |
| 12 | ; Module Name:\r | |
| 13 | ;\r | |
| 14 | ; LShiftU64.asm\r | |
| 15 | ;\r | |
| 16 | ; Abstract:\r | |
| 17 | ;\r | |
| 18 | ; 64-bit left shift function for IA-32\r | |
| 19 | ;\r | |
| 20 | ;------------------------------------------------------------------------------\r | |
| 21 | \r | |
| 22 | .686\r | |
| 23 | .model flat,C\r | |
| 24 | .code\r | |
| 25 | \r | |
| 26 | ;------------------------------------------------------------------------------\r | |
| 27 | ; UINT64\r | |
| 28 | ; EFIAPI\r | |
| 29 | ; InternalMathLShiftU64 (\r | |
| 30 | ; IN UINT64 Operand,\r | |
| 31 | ; IN UINTN Count\r | |
| 32 | ; );\r | |
| 33 | ;------------------------------------------------------------------------------\r | |
| 34 | InternalMathLShiftU64 PROC\r | |
| 35 | mov cl, [esp + 12]\r | |
| 36 | xor eax, eax\r | |
| 37 | mov edx, [esp + 4]\r | |
| 38 | test cl, 32 ; Count >= 32?\r | |
| 88a75d26 MK |
39 | jnz @F\r |
| 40 | mov eax, edx\r | |
| 41 | mov edx, [esp + 8]\r | |
| 42 | @@: \r | |
| e1f414b6 | 43 | shld edx, eax, cl\r |
| 44 | shl eax, cl\r | |
| 45 | ret\r | |
| 46 | InternalMathLShiftU64 ENDP\r | |
| 47 | \r | |
| 48 | END\r |