projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 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. Update to use VSTM/VLDM to do 128 byte writes.\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-r7, 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, #127\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 | vdup.8 q0,r2\r | |
| 58 | vmov q1,q0\r | |
| 59 | vmov q2,q0\r | |
| 60 | vmov q3,q0\r | |
| 61 | vmov q4,q0\r | |
| 62 | vmov q5,q0\r | |
| 63 | vmov q6,q0\r | |
| 64 | vmov q7,q0\r | |
| 58b5d037 | 65 | \s\sb\s\s L32\r |
| d39eb83c | 66 | L34:\r |
| 58b5d037 | 67 | \s\scmp\s\s lr, #0\r |
| 68 | \s\sstreqb\s\sr2, [r12], #1\r | |
| 69 | \s\ssubeq\s\s r1, r1, #1\r | |
| 70 | \s\sbeq\s\s L43\r | |
| 71 | \s\ssub\s\s r1, r1, #128\r | |
| 72 | \s\scmp\s\s r1, #127\r | |
| 73 | \s\scmp\s\s r1, #31\r | |
| 74 | \s\smovls\s\s lr, r3\r | |
| 75 | \s\svstm r12!, {d0-d15}\r | |
| d39eb83c | 76 | L43:\r |
| 58b5d037 | 77 | \s\scmp\s\s r1, #0\r |
| 78 | \s\sbne\s\s L34\r | |
| 79 | \s\sldmfd\s\s sp!, {pc}\r | |
| 80 | \s\s |