MdePkg/Library/BaseLib/X64/LongJump.S

   1 #------------------------------------------------------------------------------
   2 #
   3 # Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
   4 # This program and the accompanying materials
   5 # are licensed and made available under the terms and conditions of the BSD License
   6 # which accompanies this distribution.  The full text of the license may be found at
   7 # http://opensource.org/licenses/bsd-license.php
   8 #
   9 # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11 #
  12 # Module Name:
  13 #
  14 #   LongJump.S
  15 #
  16 # Abstract:
  17 #
  18 #   Implementation of _LongJump() on x64.
  19 #
  20 #------------------------------------------------------------------------------
  21
  22 #------------------------------------------------------------------------------
  23 # VOID
  24 # EFIAPI
  25 # InternalLongJump (
  26 #   IN      BASE_LIBRARY_JUMP_BUFFER  *JumpBuffer,
  27 #   IN      UINTN                     Value
  28 #   );
  29 #------------------------------------------------------------------------------
  30 ASM_GLOBAL ASM_PFX(InternalLongJump)
  31 ASM_PFX(InternalLongJump):
  32     mov     (%rcx), %rbx
  33     mov     0x8(%rcx), %rsp
  34     mov     0x10(%rcx), %rbp
  35     mov     0x18(%rcx), %rdi
  36     mov     0x20(%rcx), %rsi
  37     mov     0x28(%rcx), %r12
  38     mov     0x30(%rcx), %r13
  39     mov     0x38(%rcx), %r14
  40     mov     0x40(%rcx), %r15
  41     # load non-volatile fp registers
  42     ldmxcsr 0x50(%rcx)
  43     movdqu  0x58(%rcx), %xmm6
  44     movdqu  0x68(%rcx), %xmm7
  45     movdqu  0x78(%rcx), %xmm8
  46     movdqu  0x88(%rcx), %xmm9
  47     movdqu  0x98(%rcx), %xmm10
  48     movdqu  0xA8(%rcx), %xmm11
  49     movdqu  0xB8(%rcx), %xmm12
  50     movdqu  0xC8(%rcx), %xmm13
  51     movdqu  0xD8(%rcx), %xmm14
  52     movdqu  0xE8(%rcx), %xmm15
  53     mov     %rdx, %rax          # set return value
  54     jmp     *0x48(%rcx)