Remove tabs.

[mirror_edk2.git] / ArmPkg / Library / BaseMemoryLibStm / Arm / SetMem.asm

;------------------------------------------------------------------------------ \r
;\r
; SetMem() worker for ARM\r
;\r
; This file started out as C code that did 64 bit moves if the buffer was\r
; 32-bit aligned, else it does a byte copy. It also does a byte copy for\r
; any trailing bytes. It was updated to do 32-byte at a time.\r
;\r
; Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>\r
; This program and the accompanying materials\r
; are licensed and made available under the terms and conditions of the BSD License\r
; which accompanies this distribution.  The full text of the license may be found at\r
; http://opensource.org/licenses/bsd-license.php\r
;\r
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
;\r
\r
/**\r
  Set Buffer to Value for Size bytes.\r
\r
  @param  Buffer   Memory to set.\r
  @param  Length   Number of bytes to set\r
  @param  Value    Value of the set operation.\r
\r
  @return Buffer\r
\r
VOID *\r
EFIAPI\r
InternalMemSetMem (\r
  OUT     VOID                      *Buffer,\r
  IN      UINTN                     Length,\r
  IN      UINT8                     Value\r
  )\r
**/\r
\s\s\r
\s\sEXPORT InternalMemSetMem\r
\s\s\r
\s\sAREA AsmMemStuff, CODE, READONLY\r
\r
InternalMemSetMem\r
\s\sstmfd\s\ssp!, {r4-r11, lr}\r
\s\stst\s\s  r0, #3\r
\s\smovne\s\sr3, #0\r
\s\smoveq\s\sr3, #1\r
\s\scmp\s\s  r1, #31\r
\s\smovls lr, #0\r
\s\sandhi\s\slr, r3, #1\r
\s\scmp\s\s  lr, #0\r
\s\smov\s\s  r12, r0\r
\s\sbne\s\s  L31\r
L32\r
\s\smov\s\s  r3, #0\r
\s\sb\s\s    L43\r
L31\r
  and   r4, r2, #0xff\r
  orr   r4, r4, r4, LSL #8\r
  orr   r4, r4, r4, LSL #16  \r
\s\smov   r5, r4\r
\s\smov   r5, r4\r
\s\smov   r6, r4\r
\s\smov   r7, r4 \r
\s\smov   r8, r4 \r
\s\smov   r9, r4 \r
\s\smov   r10, r4 \r
\s\smov   r11, r4 \r
\s\sb\s\s    L32\r
L34\r
\s\scmp\s\s    lr, #0\r
\s\sstreqb\s\sr2, [r12], #1\r
\s\ssubeq\s\s  r1, r1, #1\r
\s\sbeq\s\s    L43\r
\s\ssub\s\s    r1, r1, #32\r
\s\scmp\s\s    r1, #31\r
\s\smovls\s\s  lr, r3\r
\s\sstmia\s\s  r12!, {r4-r11}\r
L43\r
\s\scmp\s\s    r1, #0\r
\s\sbne\s\s    L34\r
\s\sldmfd\s\s  sp!, {r4-r11, pc}\r
\s\s\r
  END\r