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d39eb83c | 1 | #------------------------------------------------------------------------------ \r |
2 | #\r | |
3 | # SemMem() worker for ARM\r | |
4 | #\r | |
5 | # This file started out as C code that did 64 bit moves if the buffer was\r | |
6 | # 32-bit aligned, else it does a byte copy. It also does a byte copy for\r | |
7 | # any trailing bytes. It was updated to do 32-byte at a time. \r | |
8 | #\r | |
d6ebcab7 HT |
9 | # Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>\r |
10 | # This program and the accompanying materials\r | |
d39eb83c | 11 | # are licensed and made available under the terms and conditions of the BSD License\r |
12 | # which accompanies this distribution. The full text of the license may be found at\r | |
13 | # http://opensource.org/licenses/bsd-license.php\r | |
14 | #\r | |
15 | # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
16 | # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
17 | #\r | |
18 | #------------------------------------------------------------------------------\r | |
19 | \r | |
20 | /**\r | |
21 | Set Buffer to Value for Size bytes.\r | |
22 | \r | |
23 | @param Buffer Memory to set.\r | |
24 | @param Length Number of bytes to set\r | |
25 | @param Value Value of the set operation.\r | |
26 | \r | |
27 | @return Buffer\r | |
28 | \r | |
29 | VOID *\r | |
30 | EFIAPI\r | |
31 | InternalMemSetMem (\r | |
32 | OUT VOID *Buffer,\r | |
33 | IN UINTN Length,\r | |
34 | IN UINT8 Value\r | |
35 | )\r | |
36 | **/\r | |
58b5d037 | 37 | \s\s\r |
d39eb83c | 38 | .text\r |
39 | .align 2\r | |
1bfda055 | 40 | GCC_ASM_EXPORT(InternalMemSetMem)\r |
d39eb83c | 41 | \r |
42 | ASM_PFX(InternalMemSetMem):\r | |
58b5d037 | 43 | \s\sstmfd\s\ssp!, {r4-r11, lr}\r |
44 | \s\stst\s\s r0, #3\r | |
45 | \s\smovne\s\sr3, #0\r | |
46 | \s\smoveq\s\sr3, #1\r | |
47 | \s\scmp\s\s r1, #31\r | |
48 | \s\smovls lr, #0\r | |
49 | \s\sandhi\s\slr, r3, #1\r | |
50 | \s\scmp\s\s lr, #0\r | |
51 | \s\smov\s\s r12, r0\r | |
52 | \s\sbne\s\s L31\r | |
d39eb83c | 53 | L32:\r |
58b5d037 | 54 | \s\smov\s\s r3, #0\r |
55 | \s\sb\s\s L43\r | |
d39eb83c | 56 | L31:\r |
57 | and r4, r2, #0xff\r | |
58 | orr r4, r4, r4, LSL #8\r | |
59 | orr r4, r4, r4, LSL #16 \r | |
58b5d037 | 60 | \s\smov r5, r4\r |
61 | \s\smov r5, r4\r | |
62 | \s\smov r6, r4\r | |
63 | \s\smov r7, r4 \r | |
64 | \s\smov r8, r4 \r | |
65 | \s\smov r9, r4 \r | |
66 | \s\smov r10, r4 \r | |
67 | \s\smov r11, r4 \r | |
68 | \s\sb\s\s L32\r | |
d39eb83c | 69 | L34:\r |
58b5d037 | 70 | \s\scmp\s\s lr, #0\r |
71 | \s\sstreqb\s\sr2, [r12], #1\r | |
72 | \s\ssubeq\s\s r1, r1, #1\r | |
73 | \s\sbeq\s\s L43\r | |
74 | \s\ssub\s\s r1, r1, #32\r | |
75 | \s\scmp\s\s r1, #31\r | |
76 | \s\smovls\s\s lr, r3\r | |
77 | \s\sstmia\s\s r12!, {r4-r11}\r | |
d39eb83c | 78 | L43:\r |
58b5d037 | 79 | \s\scmp\s\s r1, #0\r |
80 | \s\sbne\s\s L34\r | |
81 | \s\sldmfd\s\s sp!, {r4-r11, pc}\r | |
82 | \s\s |