Update to make end-of-line consistent for all source files in MdePkg. There are no...

[mirror_edk2.git] / EdkCompatibilityPkg / Foundation / Library / Pei / PeiLib / Ia32 / ProcessorAsms.S

#\r
# Copyright (c) 2004, Intel Corporation                                                         \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
# Module Name:\r
# \r
#    ProcessorAsms.Asm\r
#\r
#\r
#\r
#include "EfiBind.h"\r
#------------------------------------------------------------------------------\r
\r
  .686P: \r
  .MMX: \r
  #.MODEL SMALL\r
  .CODE: \r
#------------------------------------------------------------------------------\r
  \r
.globl ASM_PFX(TransferControlSetJump)  \r
.globl ASM_PFX(TransferControlLongJump)\r
.globl ASM_PFX(SwitchStacks)\r
.globl ASM_PFX(SwitchIplStacks)\r
\r
.equ                            EFI_SUCCESS, 0\r
.equ                            EFI_WARN_RETURN_FROM_LONG_JUMP, 5\r
\r
#\r
# typedef struct {\r
#  UINT32  ebx;\r
#  UINT32  esi;\r
#  UINT32  edi;\r
#  UINT32  ebp;\r
#  UINT32  esp;\r
#  UINT32  eip;\r
#} EFI_JUMP_BUFFER;\r
#\r
\r
#typedef \r
#EFI_STATUS\r
#(EFIAPI *EFI_PEI_TRANSFER_CONTROL_SET_JUMP) (\r
#  IN EFI_PEI_TRANSFER_CONTROL_PROTOCOL  *This,\r
#  OUT EFI_JUMP_BUFFER                   *Context\r
#  );\r
#\r
#Routine Description:\r
#\r
#  This routine implements the IA32 variant of the SetJump call.  Its\r
#  responsibility is to store system state information for a possible\r
#  subsequent LongJump.\r
#\r
#Arguments:\r
#\r
#  Pointer to CPU context save buffer.\r
#\r
#Returns:\r
#\r
#  EFI_SUCCESS\r
#\r
ASM_PFX(TransferControlSetJump):\r
  push   %ebp\r
  mov    %esp,%ebp\r
  mov    0x8(%ebp),%eax\r
  mov    0xc(%ebp),%ecx\r
  mov    %ebx,(%ecx)\r
  mov    %esi,0x4(%ecx)\r
  mov    %edi,0x8(%ecx)\r
  mov    0x0(%ebp),%eax\r
  mov    %eax,0xc(%ecx)\r
  lea    0x4(%ebp),%eax\r
  mov    %eax,0x10(%ecx)\r
  mov    0x4(%ebp),%eax\r
  mov    %eax,0x14(%ecx)\r
  mov    $0x0,%eax\r
  leave  \r
  ret    \r
\r
#typedef \r
#EFI_STATUS\r
#(EFIAPI *EFI_PEI_TRANSFER_CONTROL_LONG_JUMP) (\r
#  IN EFI_PEI_TRANSFER_CONTROL_PROTOCOL  *This,\r
#  IN EFI_JUMP_BUFFER                    *Context\r
#  );\r
#\r
# Routine Description:\r
# \r
#  This routine implements the IA32 variant of the LongJump call.  Its\r
#  responsibility is restore the system state to the Context Buffer and\r
#  pass control back.\r
#\r
# Arguments:\r
# \r
#  Pointer to CPU context save buffer.\r
#\r
# Returns:\r
#\r
#  EFI_WARN_RETURN_FROM_LONG_JUMP\r
#\r
\r
ASM_PFX(TransferControlLongJump):\r
  push   %ebp\r
  mov    %esp,%ebp\r
  push   %ebx\r
  push   %esi\r
  push   %edi\r
  mov    0x8(%ebp),%eax\r
  mov    $0x5,%eax\r
  mov    0xc(%ebp),%ecx\r
  mov    (%ecx),%ebx\r
  mov    0x4(%ecx),%esi\r
  mov    0x8(%ecx),%edi\r
  mov    0xc(%ecx),%ebp\r
  mov    0x10(%ecx),%esp\r
  add    $0x4,%esp\r
  jmp    *0x14(%ecx)\r
  mov    $0x5,%eax\r
  pop    %edi\r
  pop    %esi\r
  pop    %ebx\r
  leave  \r
  ret    \r
\r
#\r
# Routine Description:\r
#       This allows the caller to switch the stack and goes to the new entry point\r
#\r
# Arguments:\r
#       EntryPoint      - Pointer to the location to enter\r
#       Parameter       - Parameter to pass in\r
#       NewStack        - New Location of the stack\r
#       NewBsp          - New BSP\r
#\r
# Returns:\r
#\r
#       Nothing. Goes to the Entry Point passing in the new parameters\r
#\r
#SwitchStacks    PROC  C \\r
#  EntryPoint:PTR DWORD, \\r
#  Parameter:DWORD, \\r
#  NewStack:PTR DWORD, \\r
#  NewBsp:PTR DWORD\r
ASM_PFX(SwitchStacks):\r
  push   %ebp\r
  mov    %esp,%ebp\r
  push   %ebx\r
  mov    0x14(%ebp),%eax\r
  mov    0xc(%ebp),%ebx\r
  mov    0x8(%ebp),%ecx\r
  mov    0x10(%ebp),%eax\r
  mov    %eax,%esp\r
  push   %ebx\r
  push   $0x0\r
  jmp    *%ecx\r
  pop    %ebx\r
  leave  \r
  ret    \r
\r
\r
\r
\r
#\r
# Routine Description:\r
#       This allows the caller to switch the stack and goes to the new entry point\r
#\r
# Arguments:\r
#       EntryPoint              - Pointer to the location to enter\r
#       Parameter1/Parameter2   - Parameter to pass in\r
#       NewStack                - New Location of the stack\r
#       NewBsp                  - New BSP\r
#\r
# Returns:\r
#\r
#       Nothing. Goes to the Entry Point passing in the new parameters\r
#\r
#SwitchIplStacks PROC  C \\r
#  EntryPoint:PTR DWORD, \\r
#  Parameter1:DWORD, \\r
#  Parameter2:DWORD, \\r
#  NewStack:PTR DWORD, \\r
#  NewBsp:PTR DWORD\r
ASM_PFX(SwitchIplStacks):\r
  push   %ebp\r
  mov    %esp,%ebp\r
  push   %ebx\r
  mov    0x18(%ebp),%eax\r
  mov    0xc(%ebp),%ebx\r
  mov    0x10(%ebp),%edx\r
  mov    0x8(%ebp),%ecx\r
  mov    0x14(%ebp),%eax\r
  mov    %eax,%esp\r
  push   %edx\r
  push   %ebx\r
  call   *%ecx\r
  pop    %ebx\r
  leave  \r
  ret    \r
\r
#SwitchIplStacks ENDP\r
\r
\r
\r