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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 |