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65 lines
1.9 KiB
ArmAsm
65 lines
1.9 KiB
ArmAsm
#------------------------------------------------------------------------------
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#
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# Copyright (c) 2006 - 2018, 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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# SPDX-License-Identifier: BSD-2-Clause-Patent
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#
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#------------------------------------------------------------------------------
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.text
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.p2align 2
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GCC_ASM_EXPORT(SetJump)
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GCC_ASM_EXPORT(InternalLongJump)
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#/**
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# Saves the current CPU context that can be restored with a call to LongJump() and returns 0.#
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#
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# Saves the current CPU context in the buffer specified by JumpBuffer and returns 0. The initial
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# call to SetJump() must always return 0. Subsequent calls to LongJump() cause a non-zero
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# value to be returned by SetJump().
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#
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# If JumpBuffer is NULL, then ASSERT().
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# For IPF CPUs, if JumpBuffer is not aligned on a 16-byte boundary, then ASSERT().
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#
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# @param JumpBuffer A pointer to CPU context buffer.
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#
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#**/
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#
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#UINTN
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#EFIAPI
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#SetJump (
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# IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer // R0
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# );
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#
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ASM_PFX(SetJump):
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mov r3, r13
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stmia r0, {r3-r12,r14}
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eor r0, r0, r0
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bx lr
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#/**
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# Restores the CPU context that was saved with SetJump().#
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#
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# Restores the CPU context from the buffer specified by JumpBuffer.
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# This function never returns to the caller.
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# Instead is resumes execution based on the state of JumpBuffer.
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#
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# @param JumpBuffer A pointer to CPU context buffer.
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# @param Value The value to return when the SetJump() context is restored.
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#
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#**/
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#VOID
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#EFIAPI
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#InternalLongJump (
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# IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer, // R0
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# IN UINTN Value // R1
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# );
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#
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ASM_PFX(InternalLongJump):
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ldmia r0, {r3-r12,r14}
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mov r13, r3
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mov r0, r1
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bx lr
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ASM_FUNCTION_REMOVE_IF_UNREFERENCED
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