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157f9533f9
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. Defining such a macro was necessary in the early days of the kernel, since GCC only started providing __ASSEMBLER__ since version 3.0 in 2000 (see https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=f8f769ea4e69 ). However, having two macros can be very confusing nowadays for the developers when switching between userspace and kernelspace coding, or when dealing with uapi headers that 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 just one comment tweaked manually in arch/mips/include/asm/cpu.h (that was missing some underscores). Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: linux-mips@vger.kernel.org Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Maciej W. Rozycki <macro@orcam.me.uk> Signed-off-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
111 lines
2.7 KiB
C
111 lines
2.7 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive for
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* more details.
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*
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* Copyright (C) 2009 DSLab, Lanzhou University, China
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* Author: Wu Zhangjin <wuzhangjin@gmail.com>
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*/
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#ifndef _ASM_MIPS_FTRACE_H
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#define _ASM_MIPS_FTRACE_H
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#ifdef CONFIG_FUNCTION_TRACER
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#define MCOUNT_ADDR ((unsigned long)(_mcount))
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#define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */
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#ifndef __ASSEMBLER__
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extern void _mcount(void);
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#define mcount _mcount
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#define safe_load(load, src, dst, error) \
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do { \
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asm volatile ( \
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"1: " load " %[tmp_dst], 0(%[tmp_src])\n" \
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" li %[tmp_err], 0\n" \
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"2: .insn\n" \
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\
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".section .fixup, \"ax\"\n" \
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"3: li %[tmp_err], 1\n" \
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" j 2b\n" \
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".previous\n" \
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\
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".section\t__ex_table,\"a\"\n\t" \
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STR(PTR_WD) "\t1b, 3b\n\t" \
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".previous\n" \
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\
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: [tmp_dst] "=&r" (dst), [tmp_err] "=r" (error)\
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: [tmp_src] "r" (src) \
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: "memory" \
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); \
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} while (0)
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#define safe_store(store, src, dst, error) \
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do { \
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asm volatile ( \
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"1: " store " %[tmp_src], 0(%[tmp_dst])\n"\
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" li %[tmp_err], 0\n" \
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"2: .insn\n" \
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\
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".section .fixup, \"ax\"\n" \
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"3: li %[tmp_err], 1\n" \
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" j 2b\n" \
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".previous\n" \
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\
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".section\t__ex_table,\"a\"\n\t"\
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STR(PTR_WD) "\t1b, 3b\n\t" \
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".previous\n" \
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\
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: [tmp_err] "=r" (error) \
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: [tmp_dst] "r" (dst), [tmp_src] "r" (src)\
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: "memory" \
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); \
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} while (0)
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#define safe_load_code(dst, src, error) \
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safe_load(STR(lw), src, dst, error)
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#define safe_store_code(src, dst, error) \
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safe_store(STR(sw), src, dst, error)
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#define safe_load_stack(dst, src, error) \
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safe_load(STR(PTR_L), src, dst, error)
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#define safe_store_stack(src, dst, error) \
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safe_store(STR(PTR_S), src, dst, error)
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#ifdef CONFIG_DYNAMIC_FTRACE
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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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void prepare_ftrace_return(unsigned long *parent_ra_addr, unsigned long self_ra,
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unsigned long fp);
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#endif /* __ASSEMBLER__ */
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#endif /* CONFIG_FUNCTION_TRACER */
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#ifdef CONFIG_FTRACE_SYSCALLS
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#ifndef __ASSEMBLER__
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/*
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* Some syscall entry functions on mips start with "__sys_" (fork and clone,
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* for instance). We should also match the sys_ variant with those.
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*/
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#define ARCH_HAS_SYSCALL_MATCH_SYM_NAME
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static inline bool arch_syscall_match_sym_name(const char *sym,
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const char *name)
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{
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return !strcmp(sym, name) ||
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(!strncmp(sym, "__sys_", 6) && !strcmp(sym + 6, name + 4));
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}
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#endif /* __ASSEMBLER__ */
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#endif /* CONFIG_FTRACE_SYSCALLS */
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#endif /* _ASM_MIPS_FTRACE_H */
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