49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef __ASM_STACKTRACE_FRAME_H
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#define __ASM_STACKTRACE_FRAME_H
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/*
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* - FRAME_META_TYPE_NONE
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*
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* This value is reserved.
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*
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* - FRAME_META_TYPE_FINAL
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*
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* The record is the last entry on the stack.
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* Unwinding should terminate successfully.
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*
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* - FRAME_META_TYPE_PT_REGS
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*
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* The record is embedded within a struct pt_regs, recording the registers at
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* an arbitrary point in time.
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* Unwinding should consume pt_regs::pc, followed by pt_regs::lr.
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*
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* Note: all other values are reserved and should result in unwinding
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* terminating with an error.
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*/
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#define FRAME_META_TYPE_NONE 0
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#define FRAME_META_TYPE_FINAL 1
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#define FRAME_META_TYPE_PT_REGS 2
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#ifndef __ASSEMBLY__
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/*
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* A standard AAPCS64 frame record.
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*/
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struct frame_record {
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u64 fp;
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u64 lr;
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};
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/*
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* A metadata frame record indicating a special unwind.
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* The record::{fp,lr} fields must be zero to indicate the presence of
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* metadata.
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*/
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struct frame_record_meta {
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struct frame_record record;
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u64 type;
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};
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#endif /* __ASSEMBLY */
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#endif /* __ASM_STACKTRACE_FRAME_H */
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