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 | |
| 37 | \r | |
| 38 | .text\r | |
| 39 | .align 2\r | |
| 40 | .globl ASM_PFX(InternalMemSetMem)\r | |
| 41 | \r | |
| 42 | ASM_PFX(InternalMemSetMem):\r | |
| 43 | stmfd sp!, {r4-r7, lr}\r | |
| 44 | tst r0, #3\r | |
| 45 | movne r3, #0\r | |
| 46 | moveq r3, #1\r | |
| 47 | cmp r1, #127\r | |
| 48 | movls lr, #0\r | |
| 49 | andhi lr, r3, #1\r | |
| 50 | cmp lr, #0\r | |
| 51 | mov r12, r0\r | |
| 52 | bne L31\r | |
| 53 | L32:\r | |
| 54 | mov r3, #0\r | |
| 55 | b L43\r | |
| 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 | |
| 65 | b L32\r | |
| 66 | L34:\r | |
| 67 | cmp lr, #0\r | |
| 68 | streqb r2, [r12], #1\r | |
| 69 | subeq r1, r1, #1\r | |
| 70 | beq L43\r | |
| 71 | sub r1, r1, #128\r | |
| 72 | cmp r1, #127\r | |
| 73 | cmp r1, #31\r | |
| 74 | movls lr, r3\r | |
| 75 | vstm r12!, {d0-d15}\r | |
| 76 | L43:\r | |
| 77 | cmp r1, #0\r | |
| 78 | bne L34\r | |
| 79 | ldmfd sp!, {pc}\r | |
| 80 |