Remove tabs from all text files in the package.

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

;------------------------------------------------------------------------------ \r
;\r
; CopyMem() 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 copies using stm/ldm.\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
/**\r
  Copy Length bytes from Source to Destination. Overlap is OK.\r
\r
  This implementation \r
\r
  @param  Destination Target of copy\r
  @param  Source      Place to copy from\r
  @param  Length      Number of bytes to copy\r
\r
  @return Destination\r
\r
\r
VOID *\r
EFIAPI\r
InternalMemCopyMem (\r
  OUT     VOID                      *DestinationBuffer,\r
  IN      CONST VOID                *SourceBuffer,\r
  IN      UINTN                     Length\r
  )\r
**/\r
\s\sEXPORT InternalMemCopyMem\r

\s\sAREA AsmMemStuff, CODE, READONLY
\r
InternalMemCopyMem\r
\s\sstmfd\s\ssp!, {r4-r11, lr}
\s\stst\s\sr0, #3
\s\smov\s\sr11, r0
\s\smov\s\sr10, r0
\s\smov\s\sip, r2
\s\smov\s\slr, r1
\s\smovne\s\sr0, #0
\s\sbne\s\sL4
\s\stst\s\sr1, #3
\s\smovne\s\sr3, #0
\s\smoveq\s\sr3, #1
\s\scmp\s\sr2, #31
\s\smovls\s\sr0, #0
\s\sandhi\s\sr0, r3, #1
L4
\s\scmp\s\sr11, r1
\s\sbcc\s\sL26
\s\sbls\s\sL7
\s\srsb\s\sr3, r1, r11
\s\scmp\s\sip, r3
\s\sbcc\s\sL26
\s\scmp\s\sip, #0
\s\sbeq\s\sL7
\s\sadd\s\sr10, r11, ip
\s\sadd\s\slr, ip, r1
\s\sb\s\sL16
L29
\s\ssub\s\sip, ip, #8
\s\scmp\s\sip, #7
\s\sldrd\s\sr2, [lr, #-8]!
\s\smovls\s\sr0, #0
\s\scmp\s\sip, #0
\s\sstrd\s\sr2, [r10, #-8]!
\s\sbeq\s\sL7
L16
\s\scmp\s\sr0, #0
\s\sbne\s\sL29
\s\ssub\s\sr3, lr, #1
\s\ssub\s\sip, ip, #1
\s\sldrb\s\sr3, [r3, #0]\s\s
\s\ssub\s\sr2, r10, #1
\s\scmp\s\sip, #0
\s\ssub\s\sr10, r10, #1
\s\ssub\s\slr, lr, #1
\s\sstrb\s\sr3, [r2, #0]
\s\sbne\s\sL16
\s\sb   L7
L11
\s\sldrb\s\sr3, [lr], #1\s\s
\s\ssub\s\sip, ip, #1
\s\sstrb\s\sr3, [r10], #1
L26
\s\scmp\s\sip, #0
\s\sbeq\s\sL7
L30
\s\scmp\s\sr0, #0
\s\sbeq\s\sL11
\s\ssub\s\sip, ip, #32
\s\scmp\s\sip, #31
\s\sldmia\s\slr!, {r2-r9}
\s\smovls\s\sr0, #0
\s\scmp\s\sip, #0
\s\sstmia\s\sr10!, {r2-r9}
\s\sbne\s\sL30
L7
  mov\s\sr0, r11
\s\sldmfd\s\ssp!, {r4-r11, pc}\r
\s\s\r
  END\r
  \r