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1bc83266 HL |
1 | #------------------------------------------------------------------------------\r |
2 | #\r | |
3 | # Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>\r | |
4 | # Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r | |
5 | # Portions copyright (c) 2011 - 2013, ARM Ltd. All rights reserved.<BR>\r | |
6 | #\r | |
7 | # This program and the accompanying materials\r | |
8 | # are licensed and made available under the terms and conditions of the BSD License\r | |
9 | # which accompanies this distribution. The full text of the license may be found at\r | |
10 | # http://opensource.org/licenses/bsd-license.php.\r | |
11 | #\r | |
12 | # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
13 | # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
14 | #\r | |
15 | #------------------------------------------------------------------------------\r | |
16 | \r | |
17 | .text\r | |
18 | .align 3\r | |
19 | \r | |
919a3a02 | 20 | GCC_ASM_EXPORT(SecSwitchStack)\r |
1bc83266 HL |
21 | \r |
22 | \r | |
23 | \r | |
24 | #/**\r | |
25 | # This allows the caller to switch the stack and return\r | |
26 | #\r | |
27 | # @param StackDelta Signed amount by which to modify the stack pointer\r | |
28 | #\r | |
29 | # @return Nothing. Goes to the Entry Point passing in the new parameters\r | |
30 | #\r | |
31 | #**/\r | |
32 | #VOID\r | |
33 | #EFIAPI\r | |
34 | #SecSwitchStack (\r | |
35 | # VOID *StackDelta\r | |
36 | # )#\r | |
37 | #\r | |
38 | ASM_PFX(SecSwitchStack):\r | |
39 | mov x1, sp\r | |
40 | add x1, x0, x1\r | |
41 | mov sp, x1\r | |
42 | ret\r | |
43 | \r |