projects / mirror_edk2.git / blame
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1 | #------------------------------------------------------------------------------ |
| 2 | # | |
| 3 | # Copyright (c) 2006, Intel Corporation | |
| 4 | # All rights reserved. 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 | # SwitchStack.S | |
| 15 | # | |
| 16 | # Abstract: | |
| 17 | # | |
| 18 | #------------------------------------------------------------------------------ | |
| 19 | ||
| 20 | #include <EdkIIGlueBase.h> | |
| 21 | #------------------------------------------------------------------------------ | |
| 22 | # Routine Description: | |
| 23 | # | |
| 24 | # Routine for switching stacks with 1 parameter | |
| 25 | # | |
| 26 | # Arguments: | |
| 27 | # | |
| 28 | # (rdi) EntryPoint - Entry point with new stack. | |
| 29 | # (rsi) Context1 - Parameter1 for entry point. | |
| 30 | # (rdx) Context2 - Parameter2 for entry point. | |
| 31 | # (rcx) NewStack - Pointer to new stack. | |
| 32 | # | |
| 33 | # Returns: | |
| 34 | # | |
| 35 | # None | |
| 36 | # | |
| 37 | #------------------------------------------------------------------------------ | |
| 38 | .globl ASM_PFX(InternalSwitchStack) | |
| 39 | ASM_PFX(InternalSwitchStack): | |
| 40 | mov %rcx, %rax | |
| 41 | mov %rdx, %rcx | |
| 42 | mov %r8, %rdx | |
| 43 | lea -0x20(%r9), %rsp | |
| 44 | call *%rax |