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6b1d6d2fba
This patch contains the implementation of dynamic function tracer. The mcount call is composed of three instructions, so there are three nop for enough placeholder. Signed-off-by: Zong Li <zong@andestech.com> Acked-by: Greentime Hu <greentime@andestech.com> Signed-off-by: Greentime Hu <greentime@andestech.com>
46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_NDS32_FTRACE_H
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#define __ASM_NDS32_FTRACE_H
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#ifdef CONFIG_FUNCTION_TRACER
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#define HAVE_FUNCTION_GRAPH_FP_TEST
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#define MCOUNT_ADDR ((unsigned long)(_mcount))
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/* mcount call is composed of three instructions:
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* sethi + ori + jral
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*/
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#define MCOUNT_INSN_SIZE 12
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extern void _mcount(unsigned long parent_ip);
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#ifdef CONFIG_DYNAMIC_FTRACE
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#define FTRACE_ADDR ((unsigned long)_ftrace_caller)
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#ifdef __NDS32_EL__
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#define INSN_NOP 0x09000040
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#define INSN_SIZE(insn) (((insn & 0x00000080) == 0) ? 4 : 2)
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#define IS_SETHI(insn) ((insn & 0x000000fe) == 0x00000046)
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#define ENDIAN_CONVERT(insn) be32_to_cpu(insn)
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#else /* __NDS32_EB__ */
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#define INSN_NOP 0x40000009
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#define INSN_SIZE(insn) (((insn & 0x80000000) == 0) ? 4 : 2)
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#define IS_SETHI(insn) ((insn & 0xfe000000) == 0x46000000)
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#define ENDIAN_CONVERT(insn) (insn)
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#endif
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extern void _ftrace_caller(unsigned long parent_ip);
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static inline unsigned long ftrace_call_adjust(unsigned long addr)
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{
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return addr;
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}
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struct dyn_arch_ftrace {
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};
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#endif /* CONFIG_DYNAMIC_FTRACE */
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#endif /* CONFIG_FUNCTION_TRACER */
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#endif /* __ASM_NDS32_FTRACE_H */
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