26cfe2c659
Fix various typos in comments and documentation. Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Andrew Fish <afish@apple.com> Cc: Ray Ni <ray.ni@intel.com> Signed-off-by: Antoine Coeur <coeur@gmx.fr> Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com> Reviewed-by: Ray Ni <ray.ni@intel.com> Signed-off-by: Philippe Mathieu-Daude <philmd@redhat.com> Message-Id: <20200207010831.9046-6-philmd@redhat.com>
48 lines
1.5 KiB
ArmAsm
48 lines
1.5 KiB
ArmAsm
#------------------------------------------------------------------------------
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#
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# Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
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# Portions copyright (c) 2011, Apple Inc. All rights reserved.
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# SPDX-License-Identifier: BSD-2-Clause-Patent
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#
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#------------------------------------------------------------------------------
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#------------------------------------------------------------------------------
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# Routine Description:
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#
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# Routine for switching stacks with 2 parameters EFI ABI
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# Convert UNIX to EFI ABI
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#
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# Arguments:
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#
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# (rdi) EntryPoint - Entry point with new stack.
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# (rsi) Context1 - Parameter1 for entry point. (rcx)
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# (rdx) Context2 - Parameter2 for entry point. (rdx)
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# (rcx) NewStack - The pointer to new stack.
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#
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# Returns:
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#
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# None
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#
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#------------------------------------------------------------------------------
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ASM_GLOBAL ASM_PFX(PeiSwitchStacks)
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ASM_PFX(PeiSwitchStacks):
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pushq $0 // tells gdb to stop unwinding frame
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movq %rsp, %rbp
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movq %rcx, %rsp // update stack pointer
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movq %rdi, %rax // entry point to %rax
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movq %rsi, %rcx // Adjust Context1
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// Context2 already in the rigth spot
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#
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# Reserve space for register parameters (rcx, rdx, r8 & r9) on the stack,
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# in case the callee wishes to spill them.
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#
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subq $32, %rsp // 32-byte shadow space plus alignment pad
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call *%rax
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