]>
Commit | Line | Data |
---|---|---|
d39eb83c | 1 | ;------------------------------------------------------------------------------ \r |
2 | ;\r | |
3 | ; SetMem() 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 | Set Buffer to Value for Size bytes.\r | |
21 | \r | |
22 | @param Buffer Memory to set.\r | |
23 | @param Length Number of bytes to set\r | |
24 | @param Value Value of the set operation.\r | |
25 | \r | |
26 | @return Buffer\r | |
27 | \r | |
28 | VOID *\r | |
29 | EFIAPI\r | |
30 | InternalMemSetMem (\r | |
31 | OUT VOID *Buffer,\r | |
32 | IN UINTN Length,\r | |
33 | IN UINT8 Value\r | |
34 | )\r | |
35 | **/\r | |
2ac288f9 | 36 | \r |
37 | EXPORT InternalMemSetMem\r | |
38 | \r | |
39 | AREA AsmMemStuff, CODE, READONLY\r | |
d39eb83c | 40 | \r |
41 | InternalMemSetMem\r | |
2ac288f9 | 42 | stmfd sp!, {r4-r11, lr}\r |
43 | tst r0, #3\r | |
44 | movne r3, #0\r | |
45 | moveq r3, #1\r | |
46 | cmp r1, #31\r | |
47 | movls lr, #0\r | |
48 | andhi lr, r3, #1\r | |
49 | cmp lr, #0\r | |
50 | mov r12, r0\r | |
51 | bne L31\r | |
d39eb83c | 52 | L32\r |
2ac288f9 | 53 | mov r3, #0\r |
54 | b L43\r | |
d39eb83c | 55 | L31\r |
56 | and r4, r2, #0xff\r | |
57 | orr r4, r4, r4, LSL #8\r | |
58 | orr r4, r4, r4, LSL #16 \r | |
2ac288f9 | 59 | mov r5, r4\r |
2ac288f9 | 60 | mov r6, r4\r |
61 | mov r7, r4 \r | |
62 | mov r8, r4 \r | |
63 | mov r9, r4 \r | |
64 | mov r10, r4 \r | |
65 | mov r11, r4 \r | |
66 | b L32\r | |
d39eb83c | 67 | L34\r |
2ac288f9 | 68 | cmp lr, #0\r |
69 | streqb r2, [r12], #1\r | |
70 | subeq r1, r1, #1\r | |
71 | beq L43\r | |
72 | sub r1, r1, #32\r | |
73 | cmp r1, #31\r | |
74 | movls lr, r3\r | |
75 | stmia r12!, {r4-r11}\r | |
d39eb83c | 76 | L43\r |
2ac288f9 | 77 | cmp r1, #0\r |
78 | bne L34\r | |
79 | ldmfd sp!, {r4-r11, pc}\r | |
80 | \r | |
d39eb83c | 81 | END\r |