Partial checkin fixing Beagle references

[mirror_edk2.git] / ArmEbPkg / Sec / ModuleEntryPoint.asm

//------------------------------------------------------------------------------ \r
//\r
// Copyright (c) 2008-2009 Apple Inc. All rights reserved.\r
//\r
// All rights reserved. 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
#include <AsmMacroIoLib.h>\r
#include <Library/PcdLib.h>\r
#include <AutoGen.h>\r
  INCLUDE AsmMacroIoLib.inc\r
  \r
  IMPORT  CEntryPoint\r
  EXPORT  _ModuleEntryPoint\r
        \r
  PRESERVE8\r
  AREA    ModuleEntryPoint, CODE, READONLY\r
  \r
\r
_ModuleEntryPoint\r
 \r
\r
  //\r
  // Set stack based on PCD values. Need to do it this way to make C code work \r
  // when it runs from FLASH. \r
  //  \r
  LoadConstantToReg (FixedPcdGet32(PcdPrePiStackBase) ,r2)    /* stack base arg2  */\r
  LoadConstantToReg (FixedPcdGet32(PcdPrePiStackSize) ,r3)    /* stack size arg3  */\r
  add     r4, r2, r3\r
\r
  //Enter SVC mode and set up SVC stack pointer\r
  mov     r0,#0x13|0x80|0x40\r
  msr     CPSR_c,r0\r
  mov     r13,r4\r
\r
  // Call C entry point\r
  LoadConstantToReg (FixedPcdGet32(PcdMemorySize) ,r1)    /* memory size arg1          */\r
  LoadConstantToReg (FixedPcdGet32(PcdMemoryBase) ,r0)    /* memory size arg0         */\r
  blx     CEntryPoint       /* Assume C code is thumb    */\r
\r
ShouldNeverGetHere\r
  /* _CEntryPoint should never return */\r
  b       ShouldNeverGetHere\r
  \r
  END\r
\r