diff options
Diffstat (limited to 'EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/X64/ProcessorAsms.S')
-rw-r--r-- | EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/X64/ProcessorAsms.S | 270 |
1 files changed, 135 insertions, 135 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/X64/ProcessorAsms.S b/EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/X64/ProcessorAsms.S index 48e4b19c88..543bed9fd1 100644 --- a/EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/X64/ProcessorAsms.S +++ b/EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/X64/ProcessorAsms.S @@ -1,135 +1,135 @@ -#------------------------------------------------------------------------------
-#
-# Copyright (c) 2008, Intel Corporation
-# All rights reserved. This program and the accompanying materials
-# are licensed and made available under the terms and conditions of the BSD License
-# which accompanies this distribution. The full text of the license may be found at
-# http://opensource.org/licenses/bsd-license.php
-#
-# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-#
-# Module Name:
-# ProcessorAsms.S
-#
-# Abstract:
-# This is separated from processor.c to allow this functions to be built with /O1
-#
-#
-#------------------------------------------------------------------------------
-#include <EfiBind.h>
-
- .text
-
-.global ASM_PFX(SwitchStacks)
-.global ASM_PFX(TransferControlSetJump)
-.global ASM_PFX(TransferControlLongJump)
-
-#
-# Routine Description:
-# This allows the caller to switch the stack and goes to the new entry point
-#
-# Arguments:
-# EntryPoint - Pointer to the location to enter // rcx
-# Parameter - Parameter to pass in // rdx
-# NewStack - New Location of the stack // r8
-# NewBsp - New BSP // r9 - not used
-#
-# Returns:
-# Nothing. Goes to the Entry Point passing in the new parameters
-#
-ASM_PFX(SwitchStacks):
-
- # Adjust stack for
- # 1) leave 4 registers space
- # 2) let it 16 bytes aligned after call
- sub $0x20,%r8
- and -0x10,%r8w # do not assume 16 bytes aligned
-
- mov %r8,%rsp
- mov %rcx,%r10
- mov %rdx,%rcx
- callq *%r10
-
- #
- # no ret as we have a new stack and we jumped to the new location
- #
- ret
-
-#SwitchStacks ENDP
-
-
-.equ EFI_SUCCESS, 0
-.equ EFI_WARN_RETURN_FROM_LONG_JUMP, 5
-
-#
-#Routine Description:
-#
-# This routine implements the x64 variant of the SetJump call. Its
-# responsibility is to store system state information for a possible
-# subsequent LongJump.
-#
-#Arguments:
-#
-# Pointer to CPU context save buffer.
-#
-#Returns:
-#
-# EFI_SUCCESS
-#
-# EFI_STATUS
-# EFIAPI
-# TransferControlLongJump (
-# IN EFI_PEI_TRANSFER_CONTROL_PROTOCOL *This,
-# IN EFI_JUMP_BUFFER *Jump
-# );
-#
-# rcx - *This
-# rdx - JumpBuffer
-#
-ASM_PFX(TransferControlSetJump):
- mov %rbx,(%rdx)
- mov %rsp,0x8(%rdx)
- mov %rbp,0x10(%rdx)
- mov %rdi,0x18(%rdx)
- mov %rsi,0x20(%rdx)
- mov %r10,0x28(%rdx)
- mov %r11,0x30(%rdx)
- mov %r12,0x38(%rdx)
- mov %r13,0x40(%rdx)
- mov %r14,0x48(%rdx)
- mov %r15,0x50(%rdx)
- mov (%rsp),%rax
- mov %rax,0x58(%rdx)
- mov $0x0,%rax
- retq
-
-
-#
-# EFI_STATUS
-# EFIAPI
-# TransferControlLongJump (
-# IN EFI_PEI_TRANSFER_CONTROL_PROTOCOL *This, // rcx
-# IN EFI_JUMP_BUFFER *Jump // rdx
-# );
-#
-#
-ASM_PFX(TransferControlLongJump):
- # set return from SetJump to EFI_WARN_RETURN_FROM_LONG_JUMP
- mov $0x5,%rax
- mov (%rdx),%rbx
- mov 0x8(%rdx),%rsp
- mov 0x10(%rdx),%rbp
- mov 0x18(%rdx),%rdi
- mov 0x20(%rdx),%rsi
- mov 0x28(%rdx),%r10
- mov 0x30(%rdx),%r11
- mov 0x38(%rdx),%r12
- mov 0x40(%rdx),%r13
- mov 0x48(%rdx),%r14
- mov 0x50(%rdx),%r15
- add $0x8,%rsp
- jmpq *0x58(%rdx)
- mov $0x5,%rax
- retq
-
+#------------------------------------------------------------------------------ +# +# Copyright (c) 2008, Intel Corporation +# All rights reserved. This program and the accompanying materials +# are licensed and made available under the terms and conditions of the BSD License +# which accompanies this distribution. The full text of the license may be found at +# http://opensource.org/licenses/bsd-license.php +# +# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +# +# Module Name: +# ProcessorAsms.S +# +# Abstract: +# This is separated from processor.c to allow this functions to be built with /O1 +# +# +#------------------------------------------------------------------------------ +#include <EfiBind.h> + + .text + +.globl ASM_PFX(SwitchStacks) +.globl ASM_PFX(TransferControlSetJump) +.globl ASM_PFX(TransferControlLongJump) + +# +# Routine Description: +# This allows the caller to switch the stack and goes to the new entry point +# +# Arguments: +# EntryPoint - Pointer to the location to enter // rcx +# Parameter - Parameter to pass in // rdx +# NewStack - New Location of the stack // r8 +# NewBsp - New BSP // r9 - not used +# +# Returns: +# Nothing. Goes to the Entry Point passing in the new parameters +# +ASM_PFX(SwitchStacks): + + # Adjust stack for + # 1) leave 4 registers space + # 2) let it 16 bytes aligned after call + sub $0x20,%r8 + and -0x10,%r8w # do not assume 16 bytes aligned + + mov %r8,%rsp + mov %rcx,%r10 + mov %rdx,%rcx + callq *%r10 + + # + # no ret as we have a new stack and we jumped to the new location + # + ret + +#SwitchStacks ENDP + + +.equ EFI_SUCCESS, 0 +.equ EFI_WARN_RETURN_FROM_LONG_JUMP, 5 + +# +#Routine Description: +# +# This routine implements the x64 variant of the SetJump call. Its +# responsibility is to store system state information for a possible +# subsequent LongJump. +# +#Arguments: +# +# Pointer to CPU context save buffer. +# +#Returns: +# +# EFI_SUCCESS +# +# EFI_STATUS +# EFIAPI +# TransferControlLongJump ( +# IN EFI_PEI_TRANSFER_CONTROL_PROTOCOL *This, +# IN EFI_JUMP_BUFFER *Jump +# ); +# +# rcx - *This +# rdx - JumpBuffer +# +ASM_PFX(TransferControlSetJump): + mov %rbx,(%rdx) + mov %rsp,0x8(%rdx) + mov %rbp,0x10(%rdx) + mov %rdi,0x18(%rdx) + mov %rsi,0x20(%rdx) + mov %r10,0x28(%rdx) + mov %r11,0x30(%rdx) + mov %r12,0x38(%rdx) + mov %r13,0x40(%rdx) + mov %r14,0x48(%rdx) + mov %r15,0x50(%rdx) + mov (%rsp),%rax + mov %rax,0x58(%rdx) + mov $0x0,%rax + retq + + +# +# EFI_STATUS +# EFIAPI +# TransferControlLongJump ( +# IN EFI_PEI_TRANSFER_CONTROL_PROTOCOL *This, // rcx +# IN EFI_JUMP_BUFFER *Jump // rdx +# ); +# +# +ASM_PFX(TransferControlLongJump): + # set return from SetJump to EFI_WARN_RETURN_FROM_LONG_JUMP + mov $0x5,%rax + mov (%rdx),%rbx + mov 0x8(%rdx),%rsp + mov 0x10(%rdx),%rbp + mov 0x18(%rdx),%rdi + mov 0x20(%rdx),%rsi + mov 0x28(%rdx),%r10 + mov 0x30(%rdx),%r11 + mov 0x38(%rdx),%r12 + mov 0x40(%rdx),%r13 + mov 0x48(%rdx),%r14 + mov 0x50(%rdx),%r15 + add $0x8,%rsp + jmpq *0x58(%rdx) + mov $0x5,%rax + retq + |