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