diff options
Diffstat (limited to 'arch/mips/include/asm/ftrace.h')
| -rw-r--r-- | arch/mips/include/asm/ftrace.h | 52 |
1 files changed, 36 insertions, 16 deletions
diff --git a/arch/mips/include/asm/ftrace.h b/arch/mips/include/asm/ftrace.h index ce35c9af0c28..7d557f03188f 100644 --- a/arch/mips/include/asm/ftrace.h +++ b/arch/mips/include/asm/ftrace.h @@ -15,28 +15,28 @@ #define MCOUNT_ADDR ((unsigned long)(_mcount)) #define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */ -#ifndef __ASSEMBLY__ +#ifndef __ASSEMBLER__ extern void _mcount(void); #define mcount _mcount #define safe_load(load, src, dst, error) \ do { \ asm volatile ( \ - "1: " load " %[" STR(dst) "], 0(%[" STR(src) "])\n"\ - " li %[" STR(error) "], 0\n" \ - "2:\n" \ + "1: " load " %[tmp_dst], 0(%[tmp_src])\n" \ + " li %[tmp_err], 0\n" \ + "2: .insn\n" \ \ ".section .fixup, \"ax\"\n" \ - "3: li %[" STR(error) "], 1\n" \ + "3: li %[tmp_err], 1\n" \ " j 2b\n" \ ".previous\n" \ \ ".section\t__ex_table,\"a\"\n\t" \ - STR(PTR) "\t1b, 3b\n\t" \ + STR(PTR_WD) "\t1b, 3b\n\t" \ ".previous\n" \ \ - : [dst] "=&r" (dst), [error] "=r" (error)\ - : [src] "r" (src) \ + : [tmp_dst] "=&r" (dst), [tmp_err] "=r" (error)\ + : [tmp_src] "r" (src) \ : "memory" \ ); \ } while (0) @@ -44,21 +44,21 @@ do { \ #define safe_store(store, src, dst, error) \ do { \ asm volatile ( \ - "1: " store " %[" STR(src) "], 0(%[" STR(dst) "])\n"\ - " li %[" STR(error) "], 0\n" \ - "2:\n" \ + "1: " store " %[tmp_src], 0(%[tmp_dst])\n"\ + " li %[tmp_err], 0\n" \ + "2: .insn\n" \ \ ".section .fixup, \"ax\"\n" \ - "3: li %[" STR(error) "], 1\n" \ + "3: li %[tmp_err], 1\n" \ " j 2b\n" \ ".previous\n" \ \ ".section\t__ex_table,\"a\"\n\t"\ - STR(PTR) "\t1b, 3b\n\t" \ + STR(PTR_WD) "\t1b, 3b\n\t" \ ".previous\n" \ \ - : [error] "=r" (error) \ - : [dst] "r" (dst), [src] "r" (src)\ + : [tmp_err] "=r" (error) \ + : [tmp_dst] "r" (dst), [tmp_src] "r" (src)\ : "memory" \ ); \ } while (0) @@ -85,6 +85,26 @@ struct dyn_arch_ftrace { }; #endif /* CONFIG_DYNAMIC_FTRACE */ -#endif /* __ASSEMBLY__ */ + +void prepare_ftrace_return(unsigned long *parent_ra_addr, unsigned long self_ra, + unsigned long fp); + +#endif /* __ASSEMBLER__ */ #endif /* CONFIG_FUNCTION_TRACER */ + +#ifdef CONFIG_FTRACE_SYSCALLS +#ifndef __ASSEMBLER__ +/* + * Some syscall entry functions on mips start with "__sys_" (fork and clone, + * for instance). We should also match the sys_ variant with those. + */ +#define ARCH_HAS_SYSCALL_MATCH_SYM_NAME +static inline bool arch_syscall_match_sym_name(const char *sym, + const char *name) +{ + return !strcmp(sym, name) || + (!strncmp(sym, "__sys_", 6) && !strcmp(sym + 6, name + 4)); +} +#endif /* __ASSEMBLER__ */ +#endif /* CONFIG_FTRACE_SYSCALLS */ #endif /* _ASM_MIPS_FTRACE_H */ |