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Commit | Line | Data |
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3402aac7 | 1 | ;------------------------------------------------------------------------------\r |
1d5d0ae9 | 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 | ; This program and the accompanying materials\r | |
6 | ; are licensed and made available under the terms and conditions of the BSD License\r | |
7 | ; which accompanies this distribution. The full text of the license may be found at\r | |
8 | ; http://opensource.org/licenses/bsd-license.php.\r | |
9 | ;\r | |
10 | ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | ;\r | |
13 | ;------------------------------------------------------------------------------\r | |
3402aac7 | 14 | \r |
1d5d0ae9 | 15 | EXPORT SecSwitchStack\r |
3402aac7 | 16 | \r |
1d5d0ae9 | 17 | AREA Switch_Stack, CODE, READONLY\r |
3402aac7 | 18 | \r |
1d5d0ae9 | 19 | ;/**\r |
20 | ; This allows the caller to switch the stack and return\r | |
21 | ;\r | |
22 | ; @param StackDelta Signed amount by which to modify the stack pointer\r | |
23 | ;\r | |
24 | ; @return Nothing. Goes to the Entry Point passing in the new parameters\r | |
25 | ;\r | |
26 | ;**/\r | |
27 | ;VOID\r | |
28 | ;EFIAPI\r | |
29 | ;SecSwitchStack (\r | |
30 | ; VOID *StackDelta\r | |
31 | ; );\r | |
32 | ;\r | |
3402aac7 | 33 | SecSwitchStack\r |
1d5d0ae9 | 34 | MOV R1, SP\r |
35 | ADD R1, R0, R1\r | |
36 | MOV SP, R1\r | |
37 | BX LR\r | |
38 | END\r |