mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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f0ef0b02af
While the GCC and Clang compilers already define __ASSEMBLER__ automatically when compiling assembler code, __ASSEMBLY__ is a macro that only gets defined by the Makefiles in the kernel. This is bad since macros starting with two underscores are names that are reserved by the C language. It can also be very confusing for the developers when switching between userspace and kernelspace coding, or when dealing with uapi headers that rather should use __ASSEMBLER__ instead. So let's now standardize on the __ASSEMBLER__ macro that is provided by the compilers. This is almost a completely mechanical patch (done with a simple "sed -i" statement), with one comment tweaked manually in the arch/loongarch/include/asm/cpu.h file (it was missing the trailing underscores). Signed-off-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
92 lines
2.2 KiB
C
92 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2022 Loongson Technology Corporation Limited
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*/
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#ifndef _ASM_LOONGARCH_FTRACE_H
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#define _ASM_LOONGARCH_FTRACE_H
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#define FTRACE_PLT_IDX 0
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#define FTRACE_REGS_PLT_IDX 1
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#define NR_FTRACE_PLTS 2
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#ifdef CONFIG_FUNCTION_TRACER
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#define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */
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#ifndef __ASSEMBLER__
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#ifndef CONFIG_DYNAMIC_FTRACE
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#define mcount _mcount
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extern void _mcount(void);
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extern void prepare_ftrace_return(unsigned long self_addr, unsigned long callsite_sp, unsigned long old);
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#else
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struct dyn_ftrace;
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struct dyn_arch_ftrace { };
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#define ARCH_SUPPORTS_FTRACE_OPS 1
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#define ftrace_init_nop ftrace_init_nop
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int ftrace_init_nop(struct module *mod, struct dyn_ftrace *rec);
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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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void prepare_ftrace_return(unsigned long self_addr, unsigned long *parent);
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#endif /* CONFIG_DYNAMIC_FTRACE */
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#ifdef CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS
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struct ftrace_ops;
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#include <linux/ftrace_regs.h>
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static __always_inline struct pt_regs *arch_ftrace_get_regs(struct ftrace_regs *fregs)
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{
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return &arch_ftrace_regs(fregs)->regs;
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}
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static __always_inline void
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ftrace_regs_set_instruction_pointer(struct ftrace_regs *fregs, unsigned long ip)
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{
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instruction_pointer_set(&arch_ftrace_regs(fregs)->regs, ip);
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}
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#undef ftrace_regs_get_frame_pointer
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#define ftrace_regs_get_frame_pointer(fregs) \
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(arch_ftrace_regs(fregs)->regs.regs[22])
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static __always_inline unsigned long
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ftrace_regs_get_return_address(struct ftrace_regs *fregs)
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{
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return *(unsigned long *)(arch_ftrace_regs(fregs)->regs.regs[1]);
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}
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#define ftrace_graph_func ftrace_graph_func
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void ftrace_graph_func(unsigned long ip, unsigned long parent_ip,
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struct ftrace_ops *op, struct ftrace_regs *fregs);
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#ifdef CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS
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static inline void
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__arch_ftrace_set_direct_caller(struct pt_regs *regs, unsigned long addr)
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{
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regs->regs[13] = addr; /* t1 */
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}
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#define arch_ftrace_set_direct_caller(fregs, addr) \
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__arch_ftrace_set_direct_caller(&arch_ftrace_regs(fregs)->regs, addr)
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#endif /* CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS */
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#endif
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#endif /* __ASSEMBLER__ */
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#endif /* CONFIG_FUNCTION_TRACER */
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#endif /* _ASM_LOONGARCH_FTRACE_H */
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