projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| cbe09e31 LG |
1 | ;------------------------------------------------------------------------------\r |
| 2 | ;\r | |
| 3 | ; Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>\r | |
| 2009f6b4 | 4 | ; SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| cbe09e31 LG |
5 | ;\r |
| 6 | ; Module Name:\r | |
| 7 | ;\r | |
| 8 | ; MathLShiftS64.nasm\r | |
| 9 | ;\r | |
| 10 | ; Abstract:\r | |
| 11 | ;\r | |
| 12 | ; 64-bit Math Worker Function.\r | |
| 13 | ; Shifts a 64-bit signed value left by a certain number of bits.\r | |
| 14 | ;\r | |
| 15 | ;------------------------------------------------------------------------------\r | |
| 16 | \r | |
| 17 | SECTION .text\r | |
| 18 | \r | |
| 19 | global ASM_PFX(__ashldi3)\r | |
| 20 | ;------------------------------------------------------------------------------\r | |
| 21 | ;\r | |
| 22 | ; void __cdecl __ashldi3 (void)\r | |
| 23 | ;\r | |
| 24 | ;------------------------------------------------------------------------------\r | |
| 25 | ASM_PFX(__ashldi3):\r | |
| 26 | cmp cl,0x40\r | |
| 27 | jnc ReturnZero\r | |
| 28 | cmp cl,0x20\r | |
| 29 | jnc More32\r | |
| 30 | shld edx,eax,cl\r | |
| 31 | shl eax,cl\r | |
| 32 | ret\r | |
| 33 | More32:\r | |
| 34 | mov edx,eax\r | |
| 35 | xor eax,eax\r | |
| 36 | and cl,0x1f\r | |
| 37 | shl edx,cl\r | |
| 38 | ret\r | |
| 39 | ReturnZero:\r | |
| 40 | xor eax,eax\r | |
| 41 | xor edx,edx\r | |
| 42 | ret\r |