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
get_dwarf_regnum(const char * name __maybe_unused,unsigned int machine __maybe_unused)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)
get_powerpc_regs(u32 raw_insn __maybe_unused,int is_source __maybe_unused,struct annotated_op_loc * op_loc __maybe_unused)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