b4bf274198
In trace events as tracepoints context are not able to be retrieve with task_pt_regs. Without arch caller regs support the pt_regs context will be all zero, perf can not parsing the callchain and resolving the symbols correctly, some time will even get into deadlock while handling the page fault, eg: perf kmem —page record ls Changelog - Add test case cmd in comment - Use regs_fp(regs) which is defined in abi/regdef.h Signed-off-by: Mao Han <han_mao@c-sky.com> Signed-off-by: Guo Ren <guoren@kernel.org>
28 lines
583 B
C
28 lines
583 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
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#ifndef __ASM_CSKY_REGDEF_H
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#define __ASM_CSKY_REGDEF_H
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#define syscallid r1
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#define regs_syscallid(regs) regs->regs[9]
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#define regs_fp(regs) regs->regs[2]
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/*
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* PSR format:
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* | 31 | 30-24 | 23-16 | 15 14 | 13-0 |
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* S CPID VEC TM
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*
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* S: Super Mode
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* CPID: Coprocessor id, only 15 for MMU
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* VEC: Exception Number
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* TM: Trace Mode
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*/
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#define DEFAULT_PSR_VALUE 0x8f000000
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#define SYSTRACE_SAVENUM 2
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#define TRAP0_SIZE 2
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#endif /* __ASM_CSKY_REGDEF_H */
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