|  | /* SPDX-License-Identifier: GPL-2.0 */ | 
|  | #ifndef _PERF_DWARF_REGS_H_ | 
|  | #define _PERF_DWARF_REGS_H_ | 
|  |  | 
|  | #ifdef HAVE_DWARF_SUPPORT | 
|  | const char *get_arch_regstr(unsigned int n); | 
|  | /* | 
|  | * get_dwarf_regstr - Returns ftrace register string from DWARF regnum | 
|  | * n: DWARF register number | 
|  | * machine: ELF machine signature (EM_*) | 
|  | */ | 
|  | const char *get_dwarf_regstr(unsigned int n, unsigned int machine); | 
|  | #endif | 
|  |  | 
|  | #ifdef HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET | 
|  | /* | 
|  | * Arch should support fetching the offset of a register in pt_regs | 
|  | * by its name. See kernel's regs_query_register_offset in | 
|  | * arch/xxx/kernel/ptrace.c. | 
|  | */ | 
|  | int regs_query_register_offset(const char *name); | 
|  | #endif | 
|  | #endif |