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1 | #------------------------------------------------------------------------------\r | |
2 | #\r | |
3 | # Copyright (c) 2006 - 2008, Intel Corporation\r | |
4 | # All rights reserved. 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 | # DivError.S\r | |
15 | #\r | |
16 | # Abstract:\r | |
17 | #\r | |
18 | # Set error flag for all division functions\r | |
19 | #\r | |
20 | #------------------------------------------------------------------------------\r | |
21 | \r | |
22 | ASM_GLOBAL ASM_PFX(InternalMathDivRemU64x32)\r | |
23 | \r | |
24 | #------------------------------------------------------------------------------\r | |
25 | # UINT64\r | |
26 | # EFIAPI\r | |
27 | # InternalMathDivRemU64x32 (\r | |
28 | # IN UINT64 Dividend,\r | |
29 | # IN UINT32 Divisor,\r | |
30 | # OUT UINT32 *Remainder\r | |
31 | # );\r | |
32 | #------------------------------------------------------------------------------\r | |
33 | ASM_PFX(InternalMathDivRemU64x32):\r | |
34 | movl 12(%esp), %ecx # ecx <- divisor\r | |
35 | movl 8(%esp), %eax # eax <- dividend[32..63]\r | |
36 | xorl %edx, %edx\r | |
37 | divl %ecx # eax <- quotient[32..63], edx <- remainder\r | |
38 | push %eax\r | |
39 | movl 8(%esp), %eax # eax <- dividend[0..31]\r | |
40 | divl %ecx # eax <- quotient[0..31]\r | |
41 | movl 20(%esp), %ecx # ecx <- Remainder\r | |
42 | jecxz L1 # abandon remainder if Remainder == NULL\r | |
43 | movl %edx, (%ecx)\r | |
44 | L1:\r | |
45 | pop %edx # edx <- quotient[32..63]\r | |
46 | ret\r |