1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _PERF_DWARF_REGS_H_ 3 #define _PERF_DWARF_REGS_H_ 4 #include "annotate.h" 5 6 #define DWARF_REG_PC 0xd3af9c /* random number */ 7 #define DWARF_REG_FB 0xd3affb /* random number */ 8 9 #ifdef HAVE_DWARF_SUPPORT 10 const char *get_arch_regstr(unsigned int n); 11 /* 12 * get_dwarf_regstr - Returns ftrace register string from DWARF regnum 13 * n: DWARF register number 14 * machine: ELF machine signature (EM_*) 15 */ 16 const char *get_dwarf_regstr(unsigned int n, unsigned int machine); 17 18 int get_arch_regnum(const char *name); 19 /* 20 * get_dwarf_regnum - Returns DWARF regnum from register name 21 * name: architecture register name 22 * machine: ELF machine signature (EM_*) 23 */ 24 int get_dwarf_regnum(const char *name, unsigned int machine); 25 26 #else /* HAVE_DWARF_SUPPORT */ 27 28 static inline int get_dwarf_regnum(const char *name __maybe_unused, 29 unsigned int machine __maybe_unused) 30 { 31 return -1; 32 } 33 #endif 34 35 #if !defined(__powerpc__) || !defined(HAVE_DWARF_SUPPORT) 36 static inline void get_powerpc_regs(u32 raw_insn __maybe_unused, int is_source __maybe_unused, 37 struct annotated_op_loc *op_loc __maybe_unused) 38 { 39 return; 40 } 41 #else 42 void get_powerpc_regs(u32 raw_insn, int is_source, struct annotated_op_loc *op_loc); 43 #endif 44 45 #ifdef HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET 46 /* 47 * Arch should support fetching the offset of a register in pt_regs 48 * by its name. See kernel's regs_query_register_offset in 49 * arch/xxx/kernel/ptrace.c. 50 */ 51 int regs_query_register_offset(const char *name); 52 #endif 53 #endif 54