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 | |
| 4 | ; This program and the accompanying materials\r | |
| 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 | |
| 7 | ; http://opensource.org/licenses/bsd-license.php.\r | |
| 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 | ; MathLShiftS64.nasm\r | |
| 15 | ;\r | |
| 16 | ; Abstract:\r | |
| 17 | ;\r | |
| 18 | ; 64-bit Math Worker Function.\r | |
| 19 | ; Shifts a 64-bit signed value left by a certain number of bits.\r | |
| 20 | ;\r | |
| 21 | ;------------------------------------------------------------------------------\r | |
| 22 | \r | |
| 23 | SECTION .text\r | |
| 24 | \r | |
| 25 | global ASM_PFX(__ashldi3)\r | |
| 26 | ;------------------------------------------------------------------------------\r | |
| 27 | ;\r | |
| 28 | ; void __cdecl __ashldi3 (void)\r | |
| 29 | ;\r | |
| 30 | ;------------------------------------------------------------------------------\r | |
| 31 | ASM_PFX(__ashldi3):\r | |
| 32 | cmp cl,0x40\r | |
| 33 | jnc ReturnZero\r | |
| 34 | cmp cl,0x20\r | |
| 35 | jnc More32\r | |
| 36 | shld edx,eax,cl\r | |
| 37 | shl eax,cl\r | |
| 38 | ret\r | |
| 39 | More32:\r | |
| 40 | mov edx,eax\r | |
| 41 | xor eax,eax\r | |
| 42 | and cl,0x1f\r | |
| 43 | shl edx,cl\r | |
| 44 | ret\r | |
| 45 | ReturnZero:\r | |
| 46 | xor eax,eax\r | |
| 47 | xor edx,edx\r | |
| 48 | ret\r |