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https://github.com/CloverHackyColor/CloverBootloader.git
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66 lines
1.5 KiB
ArmAsm
66 lines
1.5 KiB
ArmAsm
#------------------------------------------------------------------------------
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#
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# Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
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# Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
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# Portions copyright (c) 2011 - 2013, ARM Limited. All rights reserved.<BR>
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# SPDX-License-Identifier: BSD-2-Clause-Patent
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#
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#------------------------------------------------------------------------------
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.text
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.align 5
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GCC_ASM_EXPORT(InternalSwitchStackAsm)
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GCC_ASM_EXPORT(CpuPause)
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#/**
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#
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# This allows the caller to switch the stack and goes to the new entry point
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#
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# @param EntryPoint The pointer to the location to enter
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# @param Context Parameter to pass in
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# @param Context2 Parameter2 to pass in
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# @param NewStack New Location of the stack
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#
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# @return Nothing. Goes to the Entry Point passing in the new parameters
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#
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#**/
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#VOID
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#EFIAPI
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#InternalSwitchStackAsm (
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# SWITCH_STACK_ENTRY_POINT EntryPoint,
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# VOID *Context,
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# VOID *Context2,
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# VOID *NewStack
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# );
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#
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ASM_PFX(InternalSwitchStackAsm):
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mov x29, #0
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mov x30, x0
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mov sp, x3
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mov x0, x1
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mov x1, x2
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ret
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#/**
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#
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# Requests CPU to pause for a short period of time.
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#
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# Requests CPU to pause for a short period of time. Typically used in MP
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# systems to prevent memory starvation while waiting for a spin lock.
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#
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#**/
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#VOID
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#EFIAPI
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#CpuPause (
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# VOID
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# )
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#
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ASM_PFX(CpuPause):
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nop
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nop
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nop
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nop
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nop
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ret
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