#------------------------------------------------------------------------------ | |
# | |
# Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR> | |
# Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> | |
# SPDX-License-Identifier: BSD-2-Clause-Patent | |
# | |
#------------------------------------------------------------------------------ | |
.text | |
.p2align 2 | |
GCC_ASM_EXPORT(SetJump) | |
GCC_ASM_EXPORT(InternalLongJump) | |
#/** | |
# Saves the current CPU context that can be restored with a call to LongJump() and returns 0.# | |
# | |
# Saves the current CPU context in the buffer specified by JumpBuffer and returns 0. The initial | |
# call to SetJump() must always return 0. Subsequent calls to LongJump() cause a non-zero | |
# value to be returned by SetJump(). | |
# | |
# If JumpBuffer is NULL, then ASSERT(). | |
# For IPF CPUs, if JumpBuffer is not aligned on a 16-byte boundary, then ASSERT(). | |
# | |
# @param JumpBuffer A pointer to CPU context buffer. | |
# | |
#**/ | |
# | |
#UINTN | |
#EFIAPI | |
#SetJump ( | |
# IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer // R0 | |
# ); | |
# | |
ASM_PFX(SetJump): | |
mov r3, r13 | |
stmia r0, {r3-r12,r14} | |
eor r0, r0, r0 | |
bx lr | |
#/** | |
# Restores the CPU context that was saved with SetJump().# | |
# | |
# Restores the CPU context from the buffer specified by JumpBuffer. | |
# This function never returns to the caller. | |
# Instead is resumes execution based on the state of JumpBuffer. | |
# | |
# @param JumpBuffer A pointer to CPU context buffer. | |
# @param Value The value to return when the SetJump() context is restored. | |
# | |
#**/ | |
#VOID | |
#EFIAPI | |
#InternalLongJump ( | |
# IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer, // R0 | |
# IN UINTN Value // R1 | |
# ); | |
# | |
ASM_PFX(InternalLongJump): | |
ldmia r0, {r3-r12,r14} | |
mov r13, r3 | |
mov r0, r1 | |
bx lr | |
ASM_FUNCTION_REMOVE_IF_UNREFERENCED |