1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun #ifndef _ASM_ARM_FTRACE 3*4882a593Smuzhiyun #define _ASM_ARM_FTRACE 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun #ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS 6*4882a593Smuzhiyun #define ARCH_SUPPORTS_FTRACE_OPS 1 7*4882a593Smuzhiyun #endif 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #ifdef CONFIG_FUNCTION_TRACER 10*4882a593Smuzhiyun #define MCOUNT_ADDR ((unsigned long)(__gnu_mcount_nc)) 11*4882a593Smuzhiyun #define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */ 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #ifndef __ASSEMBLY__ 14*4882a593Smuzhiyun extern void __gnu_mcount_nc(void); 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun #ifdef CONFIG_DYNAMIC_FTRACE 17*4882a593Smuzhiyun struct dyn_arch_ftrace { 18*4882a593Smuzhiyun #ifdef CONFIG_ARM_MODULE_PLTS 19*4882a593Smuzhiyun struct module *mod; 20*4882a593Smuzhiyun #endif 21*4882a593Smuzhiyun }; 22*4882a593Smuzhiyun ftrace_call_adjust(unsigned long addr)23*4882a593Smuzhiyunstatic inline unsigned long ftrace_call_adjust(unsigned long addr) 24*4882a593Smuzhiyun { 25*4882a593Smuzhiyun /* With Thumb-2, the recorded addresses have the lsb set */ 26*4882a593Smuzhiyun return addr & ~1; 27*4882a593Smuzhiyun } 28*4882a593Smuzhiyun #endif 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun #endif 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun #endif 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun #ifndef __ASSEMBLY__ 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun #if defined(CONFIG_FRAME_POINTER) && !defined(CONFIG_ARM_UNWIND) 37*4882a593Smuzhiyun /* 38*4882a593Smuzhiyun * return_address uses walk_stackframe to do it's work. If both 39*4882a593Smuzhiyun * CONFIG_FRAME_POINTER=y and CONFIG_ARM_UNWIND=y walk_stackframe uses unwind 40*4882a593Smuzhiyun * information. For this to work in the function tracer many functions would 41*4882a593Smuzhiyun * have to be marked with __notrace. So for now just depend on 42*4882a593Smuzhiyun * !CONFIG_ARM_UNWIND. 43*4882a593Smuzhiyun */ 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun void *return_address(unsigned int); 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun #else 48*4882a593Smuzhiyun return_address(unsigned int level)49*4882a593Smuzhiyunstatic inline void *return_address(unsigned int level) 50*4882a593Smuzhiyun { 51*4882a593Smuzhiyun return NULL; 52*4882a593Smuzhiyun } 53*4882a593Smuzhiyun 54*4882a593Smuzhiyun #endif 55*4882a593Smuzhiyun 56*4882a593Smuzhiyun #define ftrace_return_address(n) return_address(n) 57*4882a593Smuzhiyun 58*4882a593Smuzhiyun #define ARCH_HAS_SYSCALL_MATCH_SYM_NAME 59*4882a593Smuzhiyun arch_syscall_match_sym_name(const char * sym,const char * name)60*4882a593Smuzhiyunstatic inline bool arch_syscall_match_sym_name(const char *sym, 61*4882a593Smuzhiyun const char *name) 62*4882a593Smuzhiyun { 63*4882a593Smuzhiyun if (!strcmp(sym, "sys_mmap2")) 64*4882a593Smuzhiyun sym = "sys_mmap_pgoff"; 65*4882a593Smuzhiyun else if (!strcmp(sym, "sys_statfs64_wrapper")) 66*4882a593Smuzhiyun sym = "sys_statfs64"; 67*4882a593Smuzhiyun else if (!strcmp(sym, "sys_fstatfs64_wrapper")) 68*4882a593Smuzhiyun sym = "sys_fstatfs64"; 69*4882a593Smuzhiyun else if (!strcmp(sym, "sys_arm_fadvise64_64")) 70*4882a593Smuzhiyun sym = "sys_fadvise64_64"; 71*4882a593Smuzhiyun 72*4882a593Smuzhiyun /* Ignore case since sym may start with "SyS" instead of "sys" */ 73*4882a593Smuzhiyun return !strcasecmp(sym, name); 74*4882a593Smuzhiyun } 75*4882a593Smuzhiyun 76*4882a593Smuzhiyun #endif /* ifndef __ASSEMBLY__ */ 77*4882a593Smuzhiyun 78*4882a593Smuzhiyun #endif /* _ASM_ARM_FTRACE */ 79