7138f340b2
This patch focuses on the ARM64 general context handling code. The modifications are aimed at enhancing performance by simplifying context save/restore operations. Changes include: - Adjusted stack alignment in `arch_set_thread_context` function. - Updated `lwp_gcc.S` to reset frame pointer and link register. - Refined `rt_hw_backtrace_frame_unwind` to handle user space address checks. - Added `GET_THREAD_SELF` macro in `asm-generic.h`. - Simplified context saving/restoring in `context_gcc.h` and related files. - Optimized `rt_hw_context_switch_interrupt` and related assembly routines. Signed-off-by: Shell <smokewood@qq.com>
38 lines
999 B
C
38 lines
999 B
C
/*
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* Copyright (c) 2006-2023 RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2023-03-12 WangXiaoyao the first version
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*/
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#ifndef __ASM_GENERIC_H__
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#define __ASM_GENERIC_H__
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/* use to mark a start point where every task start from */
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#define START_POINT(funcname) \
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.global funcname; \
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.type funcname, %function; \
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funcname: \
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.cfi_sections .debug_frame, .eh_frame; \
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.cfi_startproc; \
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.cfi_undefined x30
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#define START_POINT_END(name) \
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.cfi_endproc; \
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.size name, .-name;
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.macro GET_THREAD_SELF, dst:req
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#ifdef ARCH_USING_HW_THREAD_SELF
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mrs x0, tpidr_el1
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#else /* !ARCH_USING_HW_THREAD_SELF */
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bl rt_thread_self
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#endif /* ARCH_USING_HW_THREAD_SELF */
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.if \dst != x0
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mov dst, x0
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.endif
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.endm
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#endif /* __ASM_GENERIC_H__ */
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